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git01.mediatek.com / haproxy / b54b6ca48362b3980027b9abedd5c0db6a9e9a1f / . / src / proto_http.c
blob: 89b55b30066094d2f05f3e8b8e1c6bab6e3e0e31 [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4 * Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <ctype.h>
14#include <errno.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <syslog.h>
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]20#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]21
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Willy Tarreaub05405a2012-01-23 15:35:52 +0100[diff] [blame]26#include <netinet/tcp.h>
27
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]28#include <common/appsession.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]29#include <common/base64.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]30#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]31#include <common/compat.h>
32#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]33#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]34#include <common/memory.h>
35#include <common/mini-clist.h>
36#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]37#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]38#include <common/time.h>
39#include <common/uri_auth.h>
40#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]41
42#include <types/capture.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]43#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]44
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]45#include <proto/acl.h>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]46#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]47#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]48#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]49#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]50#include <proto/checks.h>
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]51#include <proto/compression.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]52#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]53#include <proto/fd.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]54#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]55#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]56#include <proto/hdr_idx.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]57#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]58#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]59#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]60#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]61#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]62#include <proto/server.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]63#include <proto/session.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]64#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]65#include <proto/task.h>
66
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]67const char HTTP_100[] =
68 "HTTP/1.1 100 Continue\r\n\r\n";
69
70const struct chunk http_100_chunk = {
71 .str = (char *)&HTTP_100,
72 .len = sizeof(HTTP_100)-1
73};
74
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]75/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]76const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]77 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]78 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]79 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]80 "Location: "; /* not terminated since it will be concatenated with the URL */
81
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]82const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]83 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]84 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]85 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]86 "Location: "; /* not terminated since it will be concatenated with the URL */
87
88/* same as 302 except that the browser MUST retry with the GET method */
89const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]90 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]91 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]92 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]93 "Location: "; /* not terminated since it will be concatenated with the URL */
94
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]95/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
96const char *HTTP_401_fmt =
97 "HTTP/1.0 401 Unauthorized\r\n"
98 "Cache-Control: no-cache\r\n"
99 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]100 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]101 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
102 "\r\n"
103 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
104
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]105const char *HTTP_407_fmt =
106 "HTTP/1.0 407 Unauthorized\r\n"
107 "Cache-Control: no-cache\r\n"
108 "Connection: close\r\n"
109 "Content-Type: text/html\r\n"
110 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
111 "\r\n"
112 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
113
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]114
115const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]116 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]117 [HTTP_ERR_400] = 400,
118 [HTTP_ERR_403] = 403,
119 [HTTP_ERR_408] = 408,
120 [HTTP_ERR_500] = 500,
121 [HTTP_ERR_502] = 502,
122 [HTTP_ERR_503] = 503,
123 [HTTP_ERR_504] = 504,
124};
125
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]126static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]127 [HTTP_ERR_200] =
128 "HTTP/1.0 200 OK\r\n"
129 "Cache-Control: no-cache\r\n"
130 "Connection: close\r\n"
131 "Content-Type: text/html\r\n"
132 "\r\n"
133 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
134
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]135 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]136 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]137 "Cache-Control: no-cache\r\n"
138 "Connection: close\r\n"
139 "Content-Type: text/html\r\n"
140 "\r\n"
141 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
142
143 [HTTP_ERR_403] =
144 "HTTP/1.0 403 Forbidden\r\n"
145 "Cache-Control: no-cache\r\n"
146 "Connection: close\r\n"
147 "Content-Type: text/html\r\n"
148 "\r\n"
149 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
150
151 [HTTP_ERR_408] =
152 "HTTP/1.0 408 Request Time-out\r\n"
153 "Cache-Control: no-cache\r\n"
154 "Connection: close\r\n"
155 "Content-Type: text/html\r\n"
156 "\r\n"
157 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
158
159 [HTTP_ERR_500] =
160 "HTTP/1.0 500 Server Error\r\n"
161 "Cache-Control: no-cache\r\n"
162 "Connection: close\r\n"
163 "Content-Type: text/html\r\n"
164 "\r\n"
165 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
166
167 [HTTP_ERR_502] =
168 "HTTP/1.0 502 Bad Gateway\r\n"
169 "Cache-Control: no-cache\r\n"
170 "Connection: close\r\n"
171 "Content-Type: text/html\r\n"
172 "\r\n"
173 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
174
175 [HTTP_ERR_503] =
176 "HTTP/1.0 503 Service Unavailable\r\n"
177 "Cache-Control: no-cache\r\n"
178 "Connection: close\r\n"
179 "Content-Type: text/html\r\n"
180 "\r\n"
181 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
182
183 [HTTP_ERR_504] =
184 "HTTP/1.0 504 Gateway Time-out\r\n"
185 "Cache-Control: no-cache\r\n"
186 "Connection: close\r\n"
187 "Content-Type: text/html\r\n"
188 "\r\n"
189 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
190
191};
192
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]193/* status codes available for the stats admin page (strictly 4 chars length) */
194const char *stat_status_codes[STAT_STATUS_SIZE] = {
195 [STAT_STATUS_DENY] = "DENY",
196 [STAT_STATUS_DONE] = "DONE",
197 [STAT_STATUS_ERRP] = "ERRP",
198 [STAT_STATUS_EXCD] = "EXCD",
199 [STAT_STATUS_NONE] = "NONE",
200 [STAT_STATUS_PART] = "PART",
201 [STAT_STATUS_UNKN] = "UNKN",
202};
203
204
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]205/* We must put the messages here since GCC cannot initialize consts depending
206 * on strlen().
207 */
208struct chunk http_err_chunks[HTTP_ERR_SIZE];
209
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]210#define FD_SETS_ARE_BITFIELDS
211#ifdef FD_SETS_ARE_BITFIELDS
212/*
213 * This map is used with all the FD_* macros to check whether a particular bit
214 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
215 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
216 * byte should be encoded. Be careful to always pass bytes from 0 to 255
217 * exclusively to the macros.
218 */
219fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
220fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
221
222#else
223#error "Check if your OS uses bitfields for fd_sets"
224#endif
225
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]226void init_proto_http()
227{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]228 int i;
229 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]230 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]231
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]232 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
233 if (!http_err_msgs[msg]) {
234 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
235 abort();
236 }
237
238 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
239 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
240 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]241
242 /* initialize the log header encoding map : '{|}"#' should be encoded with
243 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
244 * URL encoding only requires '"', '#' to be encoded as well as non-
245 * printable characters above.
246 */
247 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
248 memset(url_encode_map, 0, sizeof(url_encode_map));
249 for (i = 0; i < 32; i++) {
250 FD_SET(i, hdr_encode_map);
251 FD_SET(i, url_encode_map);
252 }
253 for (i = 127; i < 256; i++) {
254 FD_SET(i, hdr_encode_map);
255 FD_SET(i, url_encode_map);
256 }
257
258 tmp = "\"#{|}";
259 while (*tmp) {
260 FD_SET(*tmp, hdr_encode_map);
261 tmp++;
262 }
263
264 tmp = "\"#";
265 while (*tmp) {
266 FD_SET(*tmp, url_encode_map);
267 tmp++;
268 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]269
270 /* memory allocations */
271 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]272 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]273}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]274
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]275/*
276 * We have 26 list of methods (1 per first letter), each of which can have
277 * up to 3 entries (2 valid, 1 null).
278 */
279struct http_method_desc {
280 http_meth_t meth;
281 int len;
282 const char text[8];
283};
284
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]285const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]286 ['C' - 'A'] = {
287 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
288 },
289 ['D' - 'A'] = {
290 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
291 },
292 ['G' - 'A'] = {
293 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
294 },
295 ['H' - 'A'] = {
296 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
297 },
298 ['P' - 'A'] = {
299 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
300 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
301 },
302 ['T' - 'A'] = {
303 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
304 },
305 /* rest is empty like this :
306 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
307 */
308};
309
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]310/* It is about twice as fast on recent architectures to lookup a byte in a
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]311 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]312 * RFC2616 for those chars.
313 */
314
315const char http_is_spht[256] = {
316 [' '] = 1, ['\t'] = 1,
317};
318
319const char http_is_crlf[256] = {
320 ['\r'] = 1, ['\n'] = 1,
321};
322
323const char http_is_lws[256] = {
324 [' '] = 1, ['\t'] = 1,
325 ['\r'] = 1, ['\n'] = 1,
326};
327
328const char http_is_sep[256] = {
329 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
330 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
331 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
332 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
333 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
334};
335
336const char http_is_ctl[256] = {
337 [0 ... 31] = 1,
338 [127] = 1,
339};
340
341/*
342 * A token is any ASCII char that is neither a separator nor a CTL char.
343 * Do not overwrite values in assignment since gcc-2.95 will not handle
344 * them correctly. Instead, define every non-CTL char's status.
345 */
346const char http_is_token[256] = {
347 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
348 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
349 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
350 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
351 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
352 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
353 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
354 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
355 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
356 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
357 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
358 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
359 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
360 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
361 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
362 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
363 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
364 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
365 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
366 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
367 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
368 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
369 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
370 ['|'] = 1, ['}'] = 0, ['~'] = 1,
371};
372
373
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]374/*
375 * An http ver_token is any ASCII which can be found in an HTTP version,
376 * which includes 'H', 'T', 'P', '/', '.' and any digit.
377 */
378const char http_is_ver_token[256] = {
379 ['.'] = 1, ['/'] = 1,
380 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
381 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
382 ['H'] = 1, ['P'] = 1, ['T'] = 1,
383};
384
385
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]386/*
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]387 * Silent debug that outputs only in strace, using fd #-1. Trash is modified.
388 */
389#if defined(DEBUG_FSM)
390static void http_silent_debug(int line, struct session *s)
391{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]392 chunk_printf(&trash,
393 "[%04d] req: p=%d(%d) s=%d bf=%08x an=%08x data=%p size=%d l=%d w=%p r=%p o=%p sm=%d fw=%ld tf=%08x\n",
394 line,
395 s->si[0].state, s->si[0].fd, s->txn.req.msg_state, s->req->flags, s->req->analysers,
396 s->req->buf->data, s->req->buf->size, s->req->l, s->req->w, s->req->r, s->req->buf->p, s->req->buf->o, s->req->to_forward, s->txn.flags);
397 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]398
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]399 chunk_printf(&trash,
400 " %04d rep: p=%d(%d) s=%d bf=%08x an=%08x data=%p size=%d l=%d w=%p r=%p o=%p sm=%d fw=%ld\n",
401 line,
402 s->si[1].state, s->si[1].fd, s->txn.rsp.msg_state, s->rep->flags, s->rep->analysers,
403 s->rep->buf->data, s->rep->buf->size, s->rep->l, s->rep->w, s->rep->r, s->rep->buf->p, s->rep->buf->o, s->rep->to_forward);
404 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]405}
406#else
407#define http_silent_debug(l,s) do { } while (0)
408#endif
409
410/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]411 * Adds a header and its CRLF at the tail of the message's buffer, just before
412 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]413 * The header is also automatically added to the index <hdr_idx>, and the end
414 * of headers is automatically adjusted. The number of bytes added is returned
415 * on success, otherwise <0 is returned indicating an error.
416 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]417int http_header_add_tail(struct http_msg *msg, struct hdr_idx *hdr_idx, const char *text)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]418{
419 int bytes, len;
420
421 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]422 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]423 if (!bytes)
424 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]425 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]426 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
427}
428
429/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]430 * Adds a header and its CRLF at the tail of the message's buffer, just before
431 * the last CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]432 * the buffer is only opened and the space reserved, but nothing is copied.
433 * The header is also automatically added to the index <hdr_idx>, and the end
434 * of headers is automatically adjusted. The number of bytes added is returned
435 * on success, otherwise <0 is returned indicating an error.
436 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]437int http_header_add_tail2(struct http_msg *msg,
438 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]439{
440 int bytes;
441
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]442 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]443 if (!bytes)
444 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]445 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]446 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
447}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]448
449/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]450 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
451 * If so, returns the position of the first non-space character relative to
452 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
453 * to return a pointer to the place after the first space. Returns 0 if the
454 * header name does not match. Checks are case-insensitive.
455 */
456int http_header_match2(const char *hdr, const char *end,
457 const char *name, int len)
458{
459 const char *val;
460
461 if (hdr + len >= end)
462 return 0;
463 if (hdr[len] != ':')
464 return 0;
465 if (strncasecmp(hdr, name, len) != 0)
466 return 0;
467 val = hdr + len + 1;
468 while (val < end && HTTP_IS_SPHT(*val))
469 val++;
470 if ((val >= end) && (len + 2 <= end - hdr))
471 return len + 2; /* we may replace starting from second space */
472 return val - hdr;
473}
474
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]475/* Find the end of the header value contained between <s> and <e>. See RFC2616,
476 * par 2.2 for more information. Note that it requires a valid header to return
477 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]478 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]479char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]480{
481 int quoted, qdpair;
482
483 quoted = qdpair = 0;
484 for (; s < e; s++) {
485 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]486 else if (quoted) {
487 if (*s == '\\') qdpair = 1;
488 else if (*s == '"') quoted = 0;
489 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]490 else if (*s == '"') quoted = 1;
491 else if (*s == ',') return s;
492 }
493 return s;
494}
495
496/* Find the first or next occurrence of header <name> in message buffer <sol>
497 * using headers index <idx>, and return it in the <ctx> structure. This
498 * structure holds everything necessary to use the header and find next
499 * occurrence. If its <idx> member is 0, the header is searched from the
500 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]501 * 1 when it finds a value, and 0 when there is no more. It is designed to work
502 * with headers defined as comma-separated lists. As a special case, if ctx->val
503 * is NULL when searching for a new values of a header, the current header is
504 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]505 */
506int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]507 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]508 struct hdr_ctx *ctx)
509{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]510 char *eol, *sov;
511 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]512
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]513 cur_idx = ctx->idx;
514 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]515 /* We have previously returned a value, let's search
516 * another one on the same line.
517 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]518 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]519 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]520 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]521 eol = sol + idx->v[cur_idx].len;
522
523 if (sov >= eol)
524 /* no more values in this header */
525 goto next_hdr;
526
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]527 /* values remaining for this header, skip the comma but save it
528 * for later use (eg: for header deletion).
529 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]530 sov++;
531 while (sov < eol && http_is_lws[(unsigned char)*sov])
532 sov++;
533
534 goto return_hdr;
535 }
536
537 /* first request for this header */
538 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]539 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]540 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]541 while (cur_idx) {
542 eol = sol + idx->v[cur_idx].len;
543
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]544 if (len == 0) {
545 /* No argument was passed, we want any header.
546 * To achieve this, we simply build a fake request. */
547 while (sol + len < eol && sol[len] != ':')
548 len++;
549 name = sol;
550 }
551
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]552 if ((len < eol - sol) &&
553 (sol[len] == ':') &&
554 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]555 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]556 sov = sol + len + 1;
557 while (sov < eol && http_is_lws[(unsigned char)*sov])
558 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]559
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]560 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]561 ctx->prev = old_idx;
562 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]563 ctx->idx = cur_idx;
564 ctx->val = sov - sol;
565
566 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]567 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]568 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]569 eol--;
570 ctx->tws++;
571 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]572 ctx->vlen = eol - sov;
573 return 1;
574 }
575 next_hdr:
576 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]577 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]578 cur_idx = idx->v[cur_idx].next;
579 }
580 return 0;
581}
582
583int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]584 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]585 struct hdr_ctx *ctx)
586{
587 return http_find_header2(name, strlen(name), sol, idx, ctx);
588}
589
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]590/* Remove one value of a header. This only works on a <ctx> returned by one of
591 * the http_find_header functions. The value is removed, as well as surrounding
592 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]593 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]594 * message <msg>. The new index is returned. If it is zero, it means there is
595 * no more header, so any processing may stop. The ctx is always left in a form
596 * that can be handled by http_find_header2() to find next occurrence.
597 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]598int http_remove_header2(struct http_msg *msg, struct hdr_idx *idx, struct hdr_ctx *ctx)
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]599{
600 int cur_idx = ctx->idx;
601 char *sol = ctx->line;
602 struct hdr_idx_elem *hdr;
603 int delta, skip_comma;
604
605 if (!cur_idx)
606 return 0;
607
608 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]609 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]610 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]611 delta = buffer_replace2(msg->chn->buf, sol, sol + hdr->len + hdr->cr + 1, NULL, 0);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]612 http_msg_move_end(msg, delta);
613 idx->used--;
614 hdr->len = 0; /* unused entry */
615 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]616 if (idx->tail == ctx->idx)
617 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]618 ctx->idx = ctx->prev; /* walk back to the end of previous header */
619 ctx->line -= idx->v[ctx->idx].len + idx->v[cur_idx].cr + 1;
620 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]621 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]622 return ctx->idx;
623 }
624
625 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]626 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
627 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]628 */
629
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]630 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]631 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]632 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]633 NULL, 0);
634 hdr->len += delta;
635 http_msg_move_end(msg, delta);
636 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]637 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]638 return ctx->idx;
639}
640
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]641/* This function handles a server error at the stream interface level. The
642 * stream interface is assumed to be already in a closed state. An optional
643 * message is copied into the input buffer, and an HTTP status code stored.
644 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]645 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]646 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]647static void http_server_error(struct session *t, struct stream_interface *si,
648 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]649{
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]650 channel_auto_read(si->ob);
651 channel_abort(si->ob);
652 channel_auto_close(si->ob);
653 channel_erase(si->ob);
654 channel_auto_close(si->ib);
655 channel_auto_read(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]656 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]657 t->txn.status = status;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]658 bo_inject(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]659 }
660 if (!(t->flags & SN_ERR_MASK))
661 t->flags |= err;
662 if (!(t->flags & SN_FINST_MASK))
663 t->flags |= finst;
664}
665
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]666/* This function returns the appropriate error location for the given session
667 * and message.
668 */
669
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]670struct chunk *http_error_message(struct session *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]671{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]672 if (s->be->errmsg[msgnum].str)
673 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]674 else if (s->fe->errmsg[msgnum].str)
675 return &s->fe->errmsg[msgnum];
676 else
677 return &http_err_chunks[msgnum];
678}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]679
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]680/*
681 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
682 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
683 */
684static http_meth_t find_http_meth(const char *str, const int len)
685{
686 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]687 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]688
689 m = ((unsigned)*str - 'A');
690
691 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]692 for (h = http_methods[m]; h->len > 0; h++) {
693 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]694 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]695 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]696 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]697 };
698 return HTTP_METH_OTHER;
699 }
700 return HTTP_METH_NONE;
701
702}
703
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]704/* Parse the URI from the given transaction (which is assumed to be in request
705 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
706 * It is returned otherwise.
707 */
708static char *
709http_get_path(struct http_txn *txn)
710{
711 char *ptr, *end;
712
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]713 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]714 end = ptr + txn->req.sl.rq.u_l;
715
716 if (ptr >= end)
717 return NULL;
718
719 /* RFC2616, par. 5.1.2 :
720 * Request-URI = "*" | absuri | abspath | authority
721 */
722
723 if (*ptr == '*')
724 return NULL;
725
726 if (isalpha((unsigned char)*ptr)) {
727 /* this is a scheme as described by RFC3986, par. 3.1 */
728 ptr++;
729 while (ptr < end &&
730 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
731 ptr++;
732 /* skip '://' */
733 if (ptr == end || *ptr++ != ':')
734 return NULL;
735 if (ptr == end || *ptr++ != '/')
736 return NULL;
737 if (ptr == end || *ptr++ != '/')
738 return NULL;
739 }
740 /* skip [user[:passwd]@]host[:[port]] */
741
742 while (ptr < end && *ptr != '/')
743 ptr++;
744
745 if (ptr == end)
746 return NULL;
747
748 /* OK, we got the '/' ! */
749 return ptr;
750}
751
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]752/* Returns a 302 for a redirectable request. This may only be called just after
753 * the stream interface has moved to SI_ST_ASS. Unprocessable requests are
754 * left unchanged and will follow normal proxy processing.
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]755 * NOTE: this function is designed to support being called once data are scheduled
756 * for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]757 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]758void perform_http_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]759{
760 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]761 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]762 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]763 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]764
765 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]766 trash.len = strlen(HTTP_302);
767 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]768
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]769 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]770
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]771 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]772 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]773 return;
774
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]775 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]776 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]777 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
778 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]779 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]780
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]781 /* 3: add the request URI. Since it was already forwarded, we need
782 * to temporarily rewind the buffer.
783 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]784 txn = &s->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]785 b_rew(s->req->buf, rewind = s->req->buf->o);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]786
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]787 path = http_get_path(txn);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]788 len = buffer_count(s->req->buf, path, b_ptr(s->req->buf, txn->req.sl.rq.u + txn->req.sl.rq.u_l));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]789
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]790 b_adv(s->req->buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]791
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]792 if (!path)
793 return;
794
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]795 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]796 return;
797
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]798 memcpy(trash.str + trash.len, path, len);
799 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]800
801 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]802 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
803 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]804 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]805 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
806 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]807 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]808
809 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]810 si_shutr(si);
811 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]812 si->err_type = SI_ET_NONE;
813 si->err_loc = NULL;
814 si->state = SI_ST_CLO;
815
816 /* send the message */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]817 http_server_error(s, si, SN_ERR_PRXCOND, SN_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]818
819 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]820 if (srv)
821 srv_inc_sess_ctr(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]822}
823
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]824/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]825 * that the server side is closed. Note that err_type is actually a
826 * bitmask, where almost only aborts may be cumulated with other
827 * values. We consider that aborted operations are more important
828 * than timeouts or errors due to the fact that nobody else in the
829 * logs might explain incomplete retries. All others should avoid
830 * being cumulated. It should normally not be possible to have multiple
831 * aborts at once, but just in case, the first one in sequence is reported.
832 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]833void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]834{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]835 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]836
837 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]838 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]839 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]840 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]841 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]842 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]843 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]844 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]845 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]846 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]847 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]848 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]849 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]850 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]851 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]852 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]853 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]854 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]855 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]856 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]857 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]858}
859
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]860extern const char sess_term_cond[8];
861extern const char sess_fin_state[8];
862extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]863struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]864struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]865struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]866
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]867/*
868 * Capture headers from message starting at <som> according to header list
869 * <cap_hdr>, and fill the <idx> structure appropriately.
870 */
871void capture_headers(char *som, struct hdr_idx *idx,
872 char **cap, struct cap_hdr *cap_hdr)
873{
874 char *eol, *sol, *col, *sov;
875 int cur_idx;
876 struct cap_hdr *h;
877 int len;
878
879 sol = som + hdr_idx_first_pos(idx);
880 cur_idx = hdr_idx_first_idx(idx);
881
882 while (cur_idx) {
883 eol = sol + idx->v[cur_idx].len;
884
885 col = sol;
886 while (col < eol && *col != ':')
887 col++;
888
889 sov = col + 1;
890 while (sov < eol && http_is_lws[(unsigned char)*sov])
891 sov++;
892
893 for (h = cap_hdr; h; h = h->next) {
894 if ((h->namelen == col - sol) &&
895 (strncasecmp(sol, h->name, h->namelen) == 0)) {
896 if (cap[h->index] == NULL)
897 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]898 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]899
900 if (cap[h->index] == NULL) {
901 Alert("HTTP capture : out of memory.\n");
902 continue;
903 }
904
905 len = eol - sov;
906 if (len > h->len)
907 len = h->len;
908
909 memcpy(cap[h->index], sov, len);
910 cap[h->index][len]=0;
911 }
912 }
913 sol = eol + idx->v[cur_idx].cr + 1;
914 cur_idx = idx->v[cur_idx].next;
915 }
916}
917
918
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]919/* either we find an LF at <ptr> or we jump to <bad>.
920 */
921#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
922
923/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
924 * otherwise to <http_msg_ood> with <state> set to <st>.
925 */
926#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
927 ptr++; \
928 if (likely(ptr < end)) \
929 goto good; \
930 else { \
931 state = (st); \
932 goto http_msg_ood; \
933 } \
934 } while (0)
935
936
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]937/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]938 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]939 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
940 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
941 * will give undefined results.
942 * Note that it is upon the caller's responsibility to ensure that ptr < end,
943 * and that msg->sol points to the beginning of the response.
944 * If a complete line is found (which implies that at least one CR or LF is
945 * found before <end>, the updated <ptr> is returned, otherwise NULL is
946 * returned indicating an incomplete line (which does not mean that parts have
947 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
948 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
949 * upon next call.
950 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]951 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]952 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
953 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]954 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]955 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]956const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]957 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]958 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]959{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]960 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]961
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]962 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]963 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]964 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]965 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]966 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
967
968 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]969 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]970 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
971 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]972 state = HTTP_MSG_ERROR;
973 break;
974
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]975 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]976 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]977 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]978 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]979 goto http_msg_rpcode;
980 }
981 if (likely(HTTP_IS_SPHT(*ptr)))
982 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
983 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]984 state = HTTP_MSG_ERROR;
985 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]986
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]987 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]988 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]989 if (likely(!HTTP_IS_LWS(*ptr)))
990 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
991
992 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]993 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]994 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
995 }
996
997 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]998 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]999 http_msg_rsp_reason:
1000 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1001 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1002 msg->sl.st.r_l = 0;
1003 goto http_msg_rpline_eol;
1004
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1005 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1006 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1007 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1008 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1009 goto http_msg_rpreason;
1010 }
1011 if (likely(HTTP_IS_SPHT(*ptr)))
1012 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1013 /* so it's a CR/LF, so there is no reason phrase */
1014 goto http_msg_rsp_reason;
1015
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1016 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1017 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1018 if (likely(!HTTP_IS_CRLF(*ptr)))
1019 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1020 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1021 http_msg_rpline_eol:
1022 /* We have seen the end of line. Note that we do not
1023 * necessarily have the \n yet, but at least we know that we
1024 * have EITHER \r OR \n, otherwise the response would not be
1025 * complete. We can then record the response length and return
1026 * to the caller which will be able to register it.
1027 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1028 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1029 return ptr;
1030
1031#ifdef DEBUG_FULL
1032 default:
1033 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1034 exit(1);
1035#endif
1036 }
1037
1038 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1039 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1040 if (ret_state)
1041 *ret_state = state;
1042 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1043 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1044 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1045}
1046
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1047/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1048 * This function parses a request line between <ptr> and <end>, starting with
1049 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1050 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1051 * will give undefined results.
1052 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1053 * and that msg->sol points to the beginning of the request.
1054 * If a complete line is found (which implies that at least one CR or LF is
1055 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1056 * returned indicating an incomplete line (which does not mean that parts have
1057 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1058 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1059 * upon next call.
1060 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1061 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1062 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1063 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1064 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1065 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1066const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1067 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1068 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1069{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1070 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1071
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1072 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1073 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1074 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1075 if (likely(HTTP_IS_TOKEN(*ptr)))
1076 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1077
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1078 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1079 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1080 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1081 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1082
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1083 if (likely(HTTP_IS_CRLF(*ptr))) {
1084 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1085 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1086 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1087 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1088 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1089 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1090 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1091 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1092 msg->sl.rq.v_l = 0;
1093 goto http_msg_rqline_eol;
1094 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1095 state = HTTP_MSG_ERROR;
1096 break;
1097
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1098 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1099 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1100 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1101 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1102 goto http_msg_rquri;
1103 }
1104 if (likely(HTTP_IS_SPHT(*ptr)))
1105 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1106 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1107 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1108
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1109 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1110 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1111 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1112 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1113
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1114 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1115 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1116 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1117 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1118
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1119 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1120 /* non-ASCII chars are forbidden unless option
1121 * accept-invalid-http-request is enabled in the frontend.
1122 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1123 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1124 if (msg->err_pos < -1)
1125 goto invalid_char;
1126 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1127 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1128 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1129 }
1130
1131 if (likely(HTTP_IS_CRLF(*ptr))) {
1132 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1133 goto http_msg_req09_uri_e;
1134 }
1135
1136 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1137 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1138 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1139 state = HTTP_MSG_ERROR;
1140 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1141
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1142 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1143 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1144 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1145 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1146 goto http_msg_rqver;
1147 }
1148 if (likely(HTTP_IS_SPHT(*ptr)))
1149 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1150 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1151 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1152
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1153 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1154 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1155 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1156 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1157
1158 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1159 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1160 http_msg_rqline_eol:
1161 /* We have seen the end of line. Note that we do not
1162 * necessarily have the \n yet, but at least we know that we
1163 * have EITHER \r OR \n, otherwise the request would not be
1164 * complete. We can then record the request length and return
1165 * to the caller which will be able to register it.
1166 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1167 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1168 return ptr;
1169 }
1170
1171 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1172 state = HTTP_MSG_ERROR;
1173 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1174
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1175#ifdef DEBUG_FULL
1176 default:
1177 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1178 exit(1);
1179#endif
1180 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1181
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1182 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1183 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1184 if (ret_state)
1185 *ret_state = state;
1186 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1187 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1188 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1189}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1190
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1191/*
1192 * Returns the data from Authorization header. Function may be called more
1193 * than once so data is stored in txn->auth_data. When no header is found
1194 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
1195 * searching again for something we are unable to find anyway.
1196 */
1197
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1198char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1199
1200int
1201get_http_auth(struct session *s)
1202{
1203
1204 struct http_txn *txn = &s->txn;
1205 struct chunk auth_method;
1206 struct hdr_ctx ctx;
1207 char *h, *p;
1208 int len;
1209
1210#ifdef DEBUG_AUTH
1211 printf("Auth for session %p: %d\n", s, txn->auth.method);
1212#endif
1213
1214 if (txn->auth.method == HTTP_AUTH_WRONG)
1215 return 0;
1216
1217 if (txn->auth.method)
1218 return 1;
1219
1220 txn->auth.method = HTTP_AUTH_WRONG;
1221
1222 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1223
1224 if (txn->flags & TX_USE_PX_CONN) {
1225 h = "Proxy-Authorization";
1226 len = strlen(h);
1227 } else {
1228 h = "Authorization";
1229 len = strlen(h);
1230 }
1231
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1232 if (!http_find_header2(h, len, s->req->buf->p, &txn->hdr_idx, &ctx))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1233 return 0;
1234
1235 h = ctx.line + ctx.val;
1236
1237 p = memchr(h, ' ', ctx.vlen);
1238 if (!p || p == h)
1239 return 0;
1240
1241 chunk_initlen(&auth_method, h, 0, p-h);
1242 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1243
1244 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1245
1246 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1247 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1248
1249 if (len < 0)
1250 return 0;
1251
1252
1253 get_http_auth_buff[len] = '\0';
1254
1255 p = strchr(get_http_auth_buff, ':');
1256
1257 if (!p)
1258 return 0;
1259
1260 txn->auth.user = get_http_auth_buff;
1261 *p = '\0';
1262 txn->auth.pass = p+1;
1263
1264 txn->auth.method = HTTP_AUTH_BASIC;
1265 return 1;
1266 }
1267
1268 return 0;
1269}
1270
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1271
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1272/*
1273 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1274 * depending on the initial msg->msg_state. The caller is responsible for
1275 * ensuring that the message does not wrap. The function can be preempted
1276 * everywhere when data are missing and recalled at the exact same location
1277 * with no information loss. The message may even be realigned between two
1278 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1279 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1280 * fields. Note that msg->sol will be initialized after completing the first
1281 * state, so that none of the msg pointers has to be initialized prior to the
1282 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1283 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1284void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1285{
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1286 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1287 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1288 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1289
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1290 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1291 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1292 ptr = buf->p + msg->next;
1293 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1294
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1295 if (unlikely(ptr >= end))
1296 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1297
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1298 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1299 /*
1300 * First, states that are specific to the response only.
1301 * We check them first so that request and headers are
1302 * closer to each other (accessed more often).
1303 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1304 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1305 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1306 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1307 /* we have a start of message, but we have to check
1308 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1309 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1310 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1311 if (unlikely(ptr != buf->p)) {
1312 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1313 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1314 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1315 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1316 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1317 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1318 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1319 hdr_idx_init(idx);
1320 state = HTTP_MSG_RPVER;
1321 goto http_msg_rpver;
1322 }
1323
1324 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1325 goto http_msg_invalid;
1326
1327 if (unlikely(*ptr == '\n'))
1328 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1329 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1330 /* stop here */
1331
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1332 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1333 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1334 EXPECT_LF_HERE(ptr, http_msg_invalid);
1335 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1336 /* stop here */
1337
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1338 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1339 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1340 case HTTP_MSG_RPVER_SP:
1341 case HTTP_MSG_RPCODE:
1342 case HTTP_MSG_RPCODE_SP:
1343 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1344 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1345 state, ptr, end,
1346 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1347 if (unlikely(!ptr))
1348 return;
1349
1350 /* we have a full response and we know that we have either a CR
1351 * or an LF at <ptr>.
1352 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1353 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1354
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1355 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1356 if (likely(*ptr == '\r'))
1357 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1358 goto http_msg_rpline_end;
1359
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1360 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1361 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1362 /* msg->sol must point to the first of CR or LF. */
1363 EXPECT_LF_HERE(ptr, http_msg_invalid);
1364 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1365 /* stop here */
1366
1367 /*
1368 * Second, states that are specific to the request only
1369 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1370 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1371 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1372 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1373 /* we have a start of message, but we have to check
1374 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1375 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1376 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1377 if (likely(ptr != buf->p)) {
1378 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1379 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1380 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1381 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1382 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1383 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1384 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1385 state = HTTP_MSG_RQMETH;
1386 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1387 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1388
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1389 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1390 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1391
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1392 if (unlikely(*ptr == '\n'))
1393 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1394 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1395 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1396
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1397 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1398 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1399 EXPECT_LF_HERE(ptr, http_msg_invalid);
1400 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1401 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1402
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1403 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1404 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1405 case HTTP_MSG_RQMETH_SP:
1406 case HTTP_MSG_RQURI:
1407 case HTTP_MSG_RQURI_SP:
1408 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1409 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1410 state, ptr, end,
1411 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1412 if (unlikely(!ptr))
1413 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1414
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1415 /* we have a full request and we know that we have either a CR
1416 * or an LF at <ptr>.
1417 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1418 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1419
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1420 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1421 if (likely(*ptr == '\r'))
1422 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1423 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1424
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1425 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1426 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1427 /* check for HTTP/0.9 request : no version information available.
1428 * msg->sol must point to the first of CR or LF.
1429 */
1430 if (unlikely(msg->sl.rq.v_l == 0))
1431 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1432
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1433 EXPECT_LF_HERE(ptr, http_msg_invalid);
1434 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1435 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1436
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1437 /*
1438 * Common states below
1439 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1440 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1441 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1442 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1443 if (likely(!HTTP_IS_CRLF(*ptr))) {
1444 goto http_msg_hdr_name;
1445 }
1446
1447 if (likely(*ptr == '\r'))
1448 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1449 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1450
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1451 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1452 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1453 /* assumes msg->sol points to the first char */
1454 if (likely(HTTP_IS_TOKEN(*ptr)))
1455 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1456
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1457 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1458 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1459
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1460 if (likely(msg->err_pos < -1) || *ptr == '\n')
1461 goto http_msg_invalid;
1462
1463 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1464 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1465
1466 /* and we still accept this non-token character */
1467 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1468
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1469 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1470 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1471 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1472 if (likely(HTTP_IS_SPHT(*ptr)))
1473 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1474
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1475 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1476 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1477
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1478 if (likely(!HTTP_IS_CRLF(*ptr))) {
1479 goto http_msg_hdr_val;
1480 }
1481
1482 if (likely(*ptr == '\r'))
1483 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1484 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1485
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1486 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1487 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1488 EXPECT_LF_HERE(ptr, http_msg_invalid);
1489 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lws, HTTP_MSG_HDR_L1_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1490
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1491 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1492 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1493 if (likely(HTTP_IS_SPHT(*ptr))) {
1494 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1495 for (; buf->p + msg->sov < ptr; msg->sov++)
1496 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1497 goto http_msg_hdr_l1_sp;
1498 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1499 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1500 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1501 goto http_msg_complete_header;
1502
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1503 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1504 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1505 /* assumes msg->sol points to the first char, and msg->sov
1506 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1507 */
1508 if (likely(!HTTP_IS_CRLF(*ptr)))
1509 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1510
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1511 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1512 /* Note: we could also copy eol into ->eoh so that we have the
1513 * real header end in case it ends with lots of LWS, but is this
1514 * really needed ?
1515 */
1516 if (likely(*ptr == '\r'))
1517 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1518 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1519
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1520 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1521 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1522 EXPECT_LF_HERE(ptr, http_msg_invalid);
1523 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lws, HTTP_MSG_HDR_L2_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1524
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1525 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1526 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1527 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1528 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1529 for (; buf->p + msg->eol < ptr; msg->eol++)
1530 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1531 goto http_msg_hdr_val;
1532 }
1533 http_msg_complete_header:
1534 /*
1535 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1536 * Assumes msg->sol points to the first char, msg->sov points
1537 * to the first character of the value and msg->eol to the
1538 * first CR or LF so we know how the line ends. We insert last
1539 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1540 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1541 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1542 idx, idx->tail) < 0))
1543 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1544
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1545 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1546 if (likely(!HTTP_IS_CRLF(*ptr))) {
1547 goto http_msg_hdr_name;
1548 }
1549
1550 if (likely(*ptr == '\r'))
1551 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1552 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1553
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1554 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1555 http_msg_last_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1556 /* Assumes msg->sol points to the first of either CR or LF */
1557 EXPECT_LF_HERE(ptr, http_msg_invalid);
1558 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1559 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1560 msg->eoh = msg->sol;
1561 msg->sol = 0;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1562 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1563 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1564
1565 case HTTP_MSG_ERROR:
1566 /* this may only happen if we call http_msg_analyser() twice with an error */
1567 break;
1568
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1569#ifdef DEBUG_FULL
1570 default:
1571 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1572 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1573#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1574 }
1575 http_msg_ood:
1576 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1577 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1578 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1579 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1580
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1581 http_msg_invalid:
1582 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1583 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1584 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1585 return;
1586}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1587
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1588/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1589 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1590 * nothing is done and 1 is returned.
1591 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1592static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1593{
1594 int delta;
1595 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1596 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1597
1598 if (msg->sl.rq.v_l != 0)
1599 return 1;
1600
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1601 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1602 delta = 0;
1603
1604 if (msg->sl.rq.u_l == 0) {
1605 /* if no URI was set, add "/" */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1606 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " /", 2);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1607 cur_end += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1608 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1609 }
1610 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1611 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " HTTP/1.0\r\n", 11);
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1612 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1613 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1614 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1615 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1616 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1617 NULL, NULL);
1618 if (unlikely(!cur_end))
1619 return 0;
1620
1621 /* we have a full HTTP/1.0 request now and we know that
1622 * we have either a CR or an LF at <ptr>.
1623 */
1624 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1625 return 1;
1626}
1627
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1628/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1629 * and "keep-alive" values. If we already know that some headers may safely
1630 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1631 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1632 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1633 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1634 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1635 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1636 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1637 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1638 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1639void http_parse_connection_header(struct http_txn *txn, struct http_msg *msg, int to_del)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1640{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1641 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1642 const char *hdr_val = "Connection";
1643 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1644
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1645 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1646 return;
1647
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1648 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1649 hdr_val = "Proxy-Connection";
1650 hdr_len = 16;
1651 }
1652
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1653 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1654 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1655 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1656 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1657 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1658 if (to_del & 2)
1659 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1660 else
1661 txn->flags |= TX_CON_KAL_SET;
1662 }
1663 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1664 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1665 if (to_del & 1)
1666 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1667 else
1668 txn->flags |= TX_CON_CLO_SET;
1669 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1670 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
1671 txn->flags |= TX_HDR_CONN_UPG;
1672 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1673 }
1674
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1675 txn->flags |= TX_HDR_CONN_PRS;
1676 return;
1677}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1678
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1679/* Apply desired changes on the Connection: header. Values may be removed and/or
1680 * added depending on the <wanted> flags, which are exclusively composed of
1681 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1682 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1683 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1684void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1685{
1686 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1687 const char *hdr_val = "Connection";
1688 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1689
1690 ctx.idx = 0;
1691
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1692
1693 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1694 hdr_val = "Proxy-Connection";
1695 hdr_len = 16;
1696 }
1697
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1698 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1699 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1700 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1701 if (wanted & TX_CON_KAL_SET)
1702 txn->flags |= TX_CON_KAL_SET;
1703 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1704 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1705 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1706 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1707 if (wanted & TX_CON_CLO_SET)
1708 txn->flags |= TX_CON_CLO_SET;
1709 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1710 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1711 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1712 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1713
1714 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1715 return;
1716
1717 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1718 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1719 hdr_val = "Connection: close";
1720 hdr_len = 17;
1721 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1722 hdr_val = "Proxy-Connection: close";
1723 hdr_len = 23;
1724 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1725 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1726 }
1727
1728 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1729 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1730 hdr_val = "Connection: keep-alive";
1731 hdr_len = 22;
1732 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1733 hdr_val = "Proxy-Connection: keep-alive";
1734 hdr_len = 28;
1735 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1736 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1737 }
1738 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1739}
1740
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1741/* Parse the chunk size at msg->next. Once done, it adjusts ->next to point to the
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1742 * first byte of body, and increments msg->sov by the number of bytes parsed,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1743 * so that we know we can forward between ->sol and ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1744 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1745 * Note: this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1746 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1747static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1748{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1749 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1750 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1751 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1752 const char *end = buf->data + buf->size;
1753 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1754 unsigned int chunk = 0;
1755
1756 /* The chunk size is in the following form, though we are only
1757 * interested in the size and CRLF :
1758 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1759 */
1760 while (1) {
1761 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1762 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1763 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1764 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1765 if (c < 0) /* not a hex digit anymore */
1766 break;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1767 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1768 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1769 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1770 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1771 chunk = (chunk << 4) + c;
1772 }
1773
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1774 /* empty size not allowed */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1775 if (ptr == ptr_old)
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1776 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1777
1778 while (http_is_spht[(unsigned char)*ptr]) {
1779 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1780 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1781 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1782 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1783 }
1784
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1785 /* Up to there, we know that at least one byte is present at *ptr. Check
1786 * for the end of chunk size.
1787 */
1788 while (1) {
1789 if (likely(HTTP_IS_CRLF(*ptr))) {
1790 /* we now have a CR or an LF at ptr */
1791 if (likely(*ptr == '\r')) {
1792 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1793 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1794 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1795 return 0;
1796 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1797
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1798 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1799 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1800 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1801 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1802 /* done */
1803 break;
1804 }
1805 else if (*ptr == ';') {
1806 /* chunk extension, ends at next CRLF */
1807 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1808 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1809 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1810 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1811
1812 while (!HTTP_IS_CRLF(*ptr)) {
1813 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1814 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1815 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1816 return 0;
1817 }
1818 /* we have a CRLF now, loop above */
1819 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1820 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1821 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1822 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1823 }
1824
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1825 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1826 * which may or may not be present. We save that into ->next and
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1827 * ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1828 */
Willy Tarreaub8ffd372012-09-27 15:08:56 +0200[diff] [blame]1829 if (ptr < ptr_old)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1830 msg->sov += buf->size;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1831 msg->sov += ptr - ptr_old;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1832 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]1833 msg->chunk_len = chunk;
1834 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1835 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1836 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1837 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1838 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1839 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1840}
1841
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1842/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1843 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1844 * the trailers is found, it is automatically scheduled to be forwarded,
1845 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
1846 * If not enough data are available, the function does not change anything
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1847 * except maybe msg->next and msg->sov if it could parse some lines, and returns
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1848 * zero. If a parse error is encountered, the function returns < 0 and does not
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1849 * change anything except maybe msg->next and msg->sov. Note that the message
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1850 * must already be in HTTP_MSG_TRAILERS state before calling this function,
1851 * which implies that all non-trailers data have already been scheduled for
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1852 * forwarding, and that the difference between msg->sol and msg->sov exactly
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1853 * matches the length of trailers already parsed and not forwarded. It is also
1854 * important to note that this function is designed to be able to parse wrapped
1855 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1856 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1857static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1858{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1859 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1860
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1861 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1862 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1863 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1864 const char *ptr = b_ptr(buf, msg->next);
1865 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1866 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1867
1868 /* scan current line and stop at LF or CRLF */
1869 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1870 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1871 return 0;
1872
1873 if (*ptr == '\n') {
1874 if (!p1)
1875 p1 = ptr;
1876 p2 = ptr;
1877 break;
1878 }
1879
1880 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1881 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1882 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1883 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1884 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1885 p1 = ptr;
1886 }
1887
1888 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1889 if (ptr >= buf->data + buf->size)
1890 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1891 }
1892
1893 /* after LF; point to beginning of next line */
1894 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1895 if (p2 >= buf->data + buf->size)
1896 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1897
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1898 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1899 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1900 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1901
1902 /* schedule this line for forwarding */
1903 msg->sov += bytes;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1904 if (msg->sov >= buf->size)
1905 msg->sov -= buf->size;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1906
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1907 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1908 /* LF/CRLF at beginning of line => end of trailers at p2.
1909 * Everything was scheduled for forwarding, there's nothing
1910 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]1911 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1912 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1913 msg->msg_state = HTTP_MSG_DONE;
1914 return 1;
1915 }
1916 /* OK, next line then */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1917 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1918 }
1919}
1920
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]1921/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1922 * a possible LF alone at the end of a chunk. It automatically adjusts msg->sov,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1923 * ->sol, ->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1924 * Note that the caller must ensure that ->p points to the first byte to parse.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1925 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
1926 * not enough data are available, the function does not change anything and
1927 * returns zero. If a parse error is encountered, the function returns < 0 and
1928 * does not change anything. Note: this function is designed to parse wrapped
1929 * CRLF at the end of the buffer.
1930 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1931static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1932{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1933 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1934 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1935 int bytes;
1936
1937 /* NB: we'll check data availabilty at the end. It's not a
1938 * problem because whatever we match first will be checked
1939 * against the correct length.
1940 */
1941 bytes = 1;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1942 ptr = buf->p;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1943 if (*ptr == '\r') {
1944 bytes++;
1945 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1946 if (ptr >= buf->data + buf->size)
1947 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1948 }
1949
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1950 if (bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1951 return 0;
1952
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1953 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1954 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1955 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1956 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1957
1958 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1959 if (ptr >= buf->data + buf->size)
1960 ptr = buf->data;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1961 /* prepare the CRLF to be forwarded (between ->sol and ->sov) */
1962 msg->sol = 0;
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1963 msg->sov = msg->next = bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1964 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
1965 return 1;
1966}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1967
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1968
1969/*
1970 * Selects a compression algorithm depending on the client request.
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1971 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1972int select_compression_request_header(struct session *s, struct buffer *req)
1973{
1974 struct http_txn *txn = &s->txn;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]1975 struct http_msg *msg = &txn->req;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1976 struct hdr_ctx ctx;
1977 struct comp_algo *comp_algo = NULL;
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]1978 struct comp_algo *comp_algo_back = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1979
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]1980 /* Disable compression for older user agents announcing themselves as "Mozilla/4"
1981 * unless they are known good (MSIE 6 with XP SP2, or MSIE 7 and later).
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1982 * See http://zoompf.com/2012/02/lose-the-wait-http-compression for more details.
1983 */
1984 ctx.idx = 0;
1985 if (http_find_header2("User-Agent", 10, req->p, &txn->hdr_idx, &ctx) &&
1986 ctx.vlen >= 9 &&
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]1987 memcmp(ctx.line + ctx.val, "Mozilla/4", 9) == 0 &&
1988 (ctx.vlen < 31 ||
1989 memcmp(ctx.line + ctx.val + 25, "MSIE ", 5) != 0 ||
1990 ctx.line[ctx.val + 30] < '6' ||
1991 (ctx.line[ctx.val + 30] == '6' &&
1992 (ctx.vlen < 54 || memcmp(ctx.line + 51, "SV1", 3) != 0)))) {
1993 s->comp_algo = NULL;
1994 return 0;
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1995 }
1996
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1997 ctx.idx = 0;
1998 /* no compression when Cache-Control: no-transform found */
1999 while (http_find_header2("Cache-Control", 13, req->p, &txn->hdr_idx, &ctx)) {
2000 if (word_match(ctx.line + ctx.val, ctx.vlen, "no-transform", 12)) {
2001 s->comp_algo = NULL;
2002 return 0;
2003 }
2004 }
2005
2006 /* search for the algo in the backend in priority or the frontend */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2007 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2008 ctx.idx = 0;
2009 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2010 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2011 if (word_match(ctx.line + ctx.val, ctx.vlen, comp_algo->name, comp_algo->name_len)) {
2012 s->comp_algo = comp_algo;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2013
2014 /* remove all occurrences of the header when "compression offload" is set */
2015
2016 if ((s->be->comp && s->be->comp->offload) ||
2017 (s->fe->comp && s->fe->comp->offload)) {
2018 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2019 ctx.idx = 0;
2020 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
2021 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2022 }
2023 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2024 return 1;
2025 }
2026 }
2027 }
2028 }
2029
2030 /* identity is implicit does not require headers */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2031 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
2032 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2033 if (comp_algo->add_data == identity_add_data) {
2034 s->comp_algo = comp_algo;
2035 return 1;
2036 }
2037 }
2038 }
2039
2040 s->comp_algo = NULL;
2041
2042 return 0;
2043}
2044
2045/*
2046 * Selects a comression algorithm depending of the server response.
2047 */
2048int select_compression_response_header(struct session *s, struct buffer *res)
2049{
2050 struct http_txn *txn = &s->txn;
2051 struct http_msg *msg = &txn->rsp;
2052 struct hdr_ctx ctx;
2053 struct comp_type *comp_type;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2054
2055 /* no common compression algorithm was found in request header */
2056 if (s->comp_algo == NULL)
2057 goto fail;
2058
2059 /* HTTP < 1.1 should not be compressed */
2060 if (!(msg->flags & HTTP_MSGF_VER_11))
2061 goto fail;
2062
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2063 /* 200 only */
2064 if (txn->status != 200)
2065 goto fail;
2066
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2067 /* Content-Length is null */
2068 if (!(msg->flags & HTTP_MSGF_TE_CHNK) && msg->body_len == 0)
2069 goto fail;
2070
2071 /* content is already compressed */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2072 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2073 if (http_find_header2("Content-Encoding", 16, res->p, &txn->hdr_idx, &ctx))
2074 goto fail;
2075
2076 comp_type = NULL;
2077
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2078 /* we don't want to compress multipart content-types, nor content-types that are
2079 * not listed in the "compression type" directive if any. If no content-type was
2080 * found but configuration requires one, we don't compress either. Backend has
2081 * the priority.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2082 */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2083 ctx.idx = 0;
2084 if (http_find_header2("Content-Type", 12, res->p, &txn->hdr_idx, &ctx)) {
2085 if (ctx.vlen >= 9 && strncasecmp("multipart", ctx.line+ctx.val, 9) == 0)
2086 goto fail;
2087
2088 if ((s->be->comp && (comp_type = s->be->comp->types)) ||
2089 (s->fe->comp && (comp_type = s->fe->comp->types))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2090 for (; comp_type; comp_type = comp_type->next) {
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2091 if (ctx.vlen >= comp_type->name_len &&
2092 strncasecmp(ctx.line+ctx.val, comp_type->name, comp_type->name_len) == 0)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2093 /* this Content-Type should be compressed */
2094 break;
2095 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2096 /* this Content-Type should not be compressed */
2097 if (comp_type == NULL)
2098 goto fail;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2099 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2100 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2101 else { /* no content-type header */
2102 if ((s->be->comp && s->be->comp->types) || (s->fe->comp && s->fe->comp->types))
2103 goto fail; /* a content-type was required */
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2104 }
2105
William Lallemandd85f9172012-11-09 17:05:39 +0100[diff] [blame]2106 /* limit compression rate */
2107 if (global.comp_rate_lim > 0)
2108 if (read_freq_ctr(&global.comp_bps_in) > global.comp_rate_lim)
2109 goto fail;
2110
William Lallemand072a2bf2012-11-20 17:01:01 +0100[diff] [blame]2111 /* limit cpu usage */
2112 if (idle_pct < compress_min_idle)
2113 goto fail;
2114
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2115 /* initialize compression */
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2116 if (s->comp_algo->init(&s->comp_ctx, global.tune.comp_maxlevel) < 0)
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2117 goto fail;
2118
William Lallemandec3e3892012-11-12 17:02:18 +0100[diff] [blame]2119 s->flags |= SN_COMP_READY;
2120
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2121 /* remove Content-Length header */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2122 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2123 if ((msg->flags & HTTP_MSGF_CNT_LEN) && http_find_header2("Content-Length", 14, res->p, &txn->hdr_idx, &ctx))
2124 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2125
2126 /* add Transfer-Encoding header */
2127 if (!(msg->flags & HTTP_MSGF_TE_CHNK))
2128 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, "Transfer-Encoding: chunked", 26);
2129
2130 /*
2131 * Add Content-Encoding header when it's not identity encoding.
2132 * RFC 2616 : Identity encoding: This content-coding is used only in the
2133 * Accept-Encoding header, and SHOULD NOT be used in the Content-Encoding
2134 * header.
2135 */
2136 if (s->comp_algo->add_data != identity_add_data) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]2137 trash.len = 18;
2138 memcpy(trash.str, "Content-Encoding: ", trash.len);
2139 memcpy(trash.str + trash.len, s->comp_algo->name, s->comp_algo->name_len);
2140 trash.len += s->comp_algo->name_len;
2141 trash.str[trash.len] = '\0';
2142 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2143 }
2144
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2145 return 1;
2146
2147fail:
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2148 if (s->flags & SN_COMP_READY)
William Lallemand1c2d6222012-10-30 15:52:53 +0100[diff] [blame]2149 s->comp_algo->end(&s->comp_ctx);
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2150 s->comp_algo = NULL;
2151 s->flags &= ~SN_COMP_READY;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2152 return 0;
2153}
2154
2155
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2156/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2157 * processing can continue on next analysers, or zero if it either needs more
2158 * data or wants to immediately abort the request (eg: timeout, error, ...). It
2159 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
2160 * when it has nothing left to do, and may remove any analyser when it wants to
2161 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2162 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2163int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2164{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2165 /*
2166 * We will parse the partial (or complete) lines.
2167 * We will check the request syntax, and also join multi-line
2168 * headers. An index of all the lines will be elaborated while
2169 * parsing.
2170 *
2171 * For the parsing, we use a 28 states FSM.
2172 *
2173 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2174 * req->buf->p = beginning of request
2175 * req->buf->p + msg->eoh = end of processed headers / start of current one
2176 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2177 * msg->eol = end of current header or line (LF or CRLF)
2178 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2179 *
2180 * At end of parsing, we may perform a capture of the error (if any), and
2181 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
2182 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2183 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2184 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2185
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2186 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2187 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2188 struct http_txn *txn = &s->txn;
2189 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2190 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2191
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2192 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2193 now_ms, __FUNCTION__,
2194 s,
2195 req,
2196 req->rex, req->wex,
2197 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2198 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2199 req->analysers);
2200
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2201 /* we're speaking HTTP here, so let's speak HTTP to the client */
2202 s->srv_error = http_return_srv_error;
2203
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2204 /* There's a protected area at the end of the buffer for rewriting
2205 * purposes. We don't want to start to parse the request if the
2206 * protected area is affected, because we may have to move processed
2207 * data later, which is much more complicated.
2208 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2209 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2210 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2211 unlikely(channel_full(req) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2212 bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2213 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite)) {
2214 if (req->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2215 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2216 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2217 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2218 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2219 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2220 return 0;
2221 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2222 if (bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2223 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite)
2224 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2225 }
2226
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2227 /* Note that we have the same problem with the response ; we
2228 * may want to send a redirect, error or anything which requires
2229 * some spare space. So we'll ensure that we have at least
2230 * maxrewrite bytes available in the response buffer before
2231 * processing that one. This will only affect pipelined
2232 * keep-alive requests.
2233 */
2234 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2235 unlikely(channel_full(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2236 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2237 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2238 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2239 if (s->rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2240 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2241 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2242 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2243 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2244 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2245 return 0;
2246 }
2247 }
2248
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2249 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2250 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2251 }
2252
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2253 /* 1: we might have to print this header in debug mode */
2254 if (unlikely((global.mode & MODE_DEBUG) &&
2255 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2256 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2257 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2258
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2259 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2260 /* this is a bit complex : in case of error on the request line,
2261 * we know that rq.l is still zero, so we display only the part
2262 * up to the end of the line (truncated by debug_hdr).
2263 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2264 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2265 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2266
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2267 sol += hdr_idx_first_pos(&txn->hdr_idx);
2268 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2269
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2270 while (cur_idx) {
2271 eol = sol + txn->hdr_idx.v[cur_idx].len;
2272 debug_hdr("clihdr", s, sol, eol);
2273 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2274 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2275 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2276 }
2277
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2278
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2279 /*
2280 * Now we quickly check if we have found a full valid request.
2281 * If not so, we check the FD and buffer states before leaving.
2282 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2283 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2284 * requests are checked first. When waiting for a second request
2285 * on a keep-alive session, if we encounter and error, close, t/o,
2286 * we note the error in the session flags but don't set any state.
2287 * Since the error will be noted there, it will not be counted by
2288 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2289 * Last, we may increase some tracked counters' http request errors on
2290 * the cases that are deliberately the client's fault. For instance,
2291 * a timeout or connection reset is not counted as an error. However
2292 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2293 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2294
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2295 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2296 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2297 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2298 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2299 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2300 session_inc_http_req_ctr(s);
2301 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2302 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2303 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2304 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2305
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2306 /* 1: Since we are in header mode, if there's no space
2307 * left for headers, we won't be able to free more
2308 * later, so the session will never terminate. We
2309 * must terminate it now.
2310 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2311 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2312 /* FIXME: check if URI is set and return Status
2313 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2314 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2315 session_inc_http_req_ctr(s);
2316 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2317 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2318 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2319 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2320 goto return_bad_req;
2321 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2322
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2323 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2324 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2325 if (!(s->flags & SN_ERR_MASK))
2326 s->flags |= SN_ERR_CLICL;
2327
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2328 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2329 goto failed_keep_alive;
2330
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2331 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2332 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2333 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2334 session_inc_http_err_ctr(s);
2335 }
2336
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2337 txn->status = 400;
2338 stream_int_retnclose(req->prod, NULL);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2339 msg->msg_state = HTTP_MSG_ERROR;
2340 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2341
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2342 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2343 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2344 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2345 if (s->listener->counters)
2346 s->listener->counters->failed_req++;
2347
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2348 if (!(s->flags & SN_FINST_MASK))
2349 s->flags |= SN_FINST_R;
2350 return 0;
2351 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2352
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2353 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2354 else if (req->flags & CF_READ_TIMEOUT || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2355 if (!(s->flags & SN_ERR_MASK))
2356 s->flags |= SN_ERR_CLITO;
2357
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2358 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2359 goto failed_keep_alive;
2360
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2361 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2362 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2363 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2364 session_inc_http_err_ctr(s);
2365 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2366 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2367 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2368 msg->msg_state = HTTP_MSG_ERROR;
2369 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2370
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2371 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2372 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2373 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2374 if (s->listener->counters)
2375 s->listener->counters->failed_req++;
2376
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2377 if (!(s->flags & SN_FINST_MASK))
2378 s->flags |= SN_FINST_R;
2379 return 0;
2380 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2381
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2382 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2383 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2384 if (!(s->flags & SN_ERR_MASK))
2385 s->flags |= SN_ERR_CLICL;
2386
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2387 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2388 goto failed_keep_alive;
2389
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2390 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2391 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2392 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2393 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2394 msg->msg_state = HTTP_MSG_ERROR;
2395 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2396
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2397 session_inc_http_err_ctr(s);
2398 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2399 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2400 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2401 if (s->listener->counters)
2402 s->listener->counters->failed_req++;
2403
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2404 if (!(s->flags & SN_FINST_MASK))
2405 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2406 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2407 }
2408
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2409 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2410 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2411 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2412#ifdef TCP_QUICKACK
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2413 if (s->listener->options & LI_O_NOQUICKACK && req->buf->i) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2414 /* We need more data, we have to re-enable quick-ack in case we
2415 * previously disabled it, otherwise we might cause the client
2416 * to delay next data.
2417 */
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]2418 setsockopt(s->si[0].conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2419 }
2420#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2421
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2422 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2423 /* If the client starts to talk, let's fall back to
2424 * request timeout processing.
2425 */
2426 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2427 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2428 }
2429
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2430 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2431 if (!tick_isset(req->analyse_exp)) {
2432 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2433 (txn->flags & TX_WAIT_NEXT_RQ) &&
2434 tick_isset(s->be->timeout.httpka))
2435 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2436 else
2437 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2438 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2439
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2440 /* we're not ready yet */
2441 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2442
2443 failed_keep_alive:
2444 /* Here we process low-level errors for keep-alive requests. In
2445 * short, if the request is not the first one and it experiences
2446 * a timeout, read error or shutdown, we just silently close so
2447 * that the client can try again.
2448 */
2449 txn->status = 0;
2450 msg->msg_state = HTTP_MSG_RQBEFORE;
2451 req->analysers = 0;
2452 s->logs.logwait = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2453 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2454 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2455 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2456 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2457
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2458 /* OK now we have a complete HTTP request with indexed headers. Let's
2459 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2460 * later. At this point, we have the last CRLF at req->buf->data + msg->eoh.
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]2461 * If the request is in HTTP/0.9 form, the rule is still true, and eoh
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2462 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2463 * byte after the last LF. msg->sov points to the first byte of data.
2464 * msg->eol cannot be trusted because it may have been left uninitialized
2465 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2466 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2467
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2468 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2469 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2470
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2471 if (txn->flags & TX_WAIT_NEXT_RQ) {
2472 /* kill the pending keep-alive timeout */
2473 txn->flags &= ~TX_WAIT_NEXT_RQ;
2474 req->analyse_exp = TICK_ETERNITY;
2475 }
2476
2477
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2478 /* Maybe we found in invalid header name while we were configured not
2479 * to block on that, so we have to capture it now.
2480 */
2481 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2482 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2483
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2484 /*
2485 * 1: identify the method
2486 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2487 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2488
2489 /* we can make use of server redirect on GET and HEAD */
2490 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2491 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2492
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2493 /*
2494 * 2: check if the URI matches the monitor_uri.
2495 * We have to do this for every request which gets in, because
2496 * the monitor-uri is defined by the frontend.
2497 */
2498 if (unlikely((s->fe->monitor_uri_len != 0) &&
2499 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2500 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2501 s->fe->monitor_uri,
2502 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2503 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2504 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2505 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2506 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2507
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2508 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2509 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2510
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2511 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2512 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2513 int ret = acl_exec_cond(cond, s->fe, s, txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2514
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2515 ret = acl_pass(ret);
2516 if (cond->pol == ACL_COND_UNLESS)
2517 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2518
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2519 if (ret) {
2520 /* we fail this request, let's return 503 service unavail */
2521 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2522 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2523 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2524 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2525 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2526
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2527 /* nothing to fail, let's reply normaly */
2528 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2529 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2530 goto return_prx_cond;
2531 }
2532
2533 /*
2534 * 3: Maybe we have to copy the original REQURI for the logs ?
2535 * Note: we cannot log anymore if the request has been
2536 * classified as invalid.
2537 */
2538 if (unlikely(s->logs.logwait & LW_REQ)) {
2539 /* we have a complete HTTP request that we must log */
2540 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2541 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2542
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2543 if (urilen >= REQURI_LEN)
2544 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2545 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2546 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2547
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2548 if (!(s->logs.logwait &= ~LW_REQ))
2549 s->do_log(s);
2550 } else {
2551 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2552 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2553 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2554
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]2555 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
2556 s->unique_id = pool_alloc2(pool2_uniqueid);
2557 }
2558
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2559 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2560 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2561 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2562
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2563 /* ... and check if the request is HTTP/1.1 or above */
2564 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2565 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2566 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2567 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2568 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2569
2570 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2571 txn->flags &= ~(TX_HDR_CONN_PRS | TX_HDR_CONN_CLO | TX_HDR_CONN_KAL | TX_HDR_CONN_UPG);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2572
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2573 /* if the frontend has "option http-use-proxy-header", we'll check if
2574 * we have what looks like a proxied connection instead of a connection,
2575 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2576 * Note that this is *not* RFC-compliant, however browsers and proxies
2577 * happen to do that despite being non-standard :-(
2578 * We consider that a request not beginning with either '/' or '*' is
2579 * a proxied connection, which covers both "scheme://location" and
2580 * CONNECT ip:port.
2581 */
2582 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2583 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2584 txn->flags |= TX_USE_PX_CONN;
2585
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2586 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2587 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2588
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2589 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2590 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2591 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2592 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2593
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2594 /* 6: determine the transfer-length.
2595 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2596 * the presence of a message-body in a REQUEST and its transfer length
2597 * must be determined that way (in order of precedence) :
2598 * 1. The presence of a message-body in a request is signaled by the
2599 * inclusion of a Content-Length or Transfer-Encoding header field
2600 * in the request's header fields. When a request message contains
2601 * both a message-body of non-zero length and a method that does
2602 * not define any semantics for that request message-body, then an
2603 * origin server SHOULD either ignore the message-body or respond
2604 * with an appropriate error message (e.g., 413). A proxy or
2605 * gateway, when presented the same request, SHOULD either forward
2606 * the request inbound with the message- body or ignore the
2607 * message-body when determining a response.
2608 *
2609 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2610 * and the "chunked" transfer-coding (Section 6.2) is used, the
2611 * transfer-length is defined by the use of this transfer-coding.
2612 * If a Transfer-Encoding header field is present and the "chunked"
2613 * transfer-coding is not present, the transfer-length is defined
2614 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2615 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2616 * 3. If a Content-Length header field is present, its decimal value in
2617 * OCTETs represents both the entity-length and the transfer-length.
2618 * If a message is received with both a Transfer-Encoding header
2619 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2620 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2621 * 4. By the server closing the connection. (Closing the connection
2622 * cannot be used to indicate the end of a request body, since that
2623 * would leave no possibility for the server to send back a response.)
2624 *
2625 * Whenever a transfer-coding is applied to a message-body, the set of
2626 * transfer-codings MUST include "chunked", unless the message indicates
2627 * it is terminated by closing the connection. When the "chunked"
2628 * transfer-coding is used, it MUST be the last transfer-coding applied
2629 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2630 */
2631
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2632 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2633 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2634 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2635 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2636 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2637 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2638 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2639 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2640 /* bad transfer-encoding (chunked followed by something else) */
2641 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2642 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2643 break;
2644 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2645 }
2646
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2647 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2648 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2649 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2650 signed long long cl;
2651
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2652 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2653 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2654 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2655 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2656
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2657 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2658 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2659 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2660 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2661
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2662 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2663 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2664 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2665 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2666
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2667 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2668 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2669 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2670 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2671
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2672 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2673 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2674 }
2675
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2676 /* bodyless requests have a known length */
2677 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2678 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2679
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2680 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2681 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2682 req->analyse_exp = TICK_ETERNITY;
2683 return 1;
2684
2685 return_bad_req:
2686 /* We centralize bad requests processing here */
2687 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2688 /* we detected a parsing error. We want to archive this request
2689 * in the dedicated proxy area for later troubleshooting.
2690 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2691 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2692 }
2693
2694 txn->req.msg_state = HTTP_MSG_ERROR;
2695 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2696 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2697
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2698 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2699 if (s->listener->counters)
2700 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2701
2702 return_prx_cond:
2703 if (!(s->flags & SN_ERR_MASK))
2704 s->flags |= SN_ERR_PRXCOND;
2705 if (!(s->flags & SN_FINST_MASK))
2706 s->flags |= SN_FINST_R;
2707
2708 req->analysers = 0;
2709 req->analyse_exp = TICK_ETERNITY;
2710 return 0;
2711}
2712
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2713/* We reached the stats page through a POST request.
2714 * Parse the posted data and enable/disable servers if necessary.
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2715 * Returns 1 if request was parsed or zero if it needs more data.
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2716 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2717int http_process_req_stat_post(struct stream_interface *si, struct http_txn *txn, struct channel *req)
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2718{
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2719 struct proxy *px = NULL;
2720 struct server *sv = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2721
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2722 char key[LINESIZE];
2723 int action = ST_ADM_ACTION_NONE;
2724 int reprocess = 0;
2725
2726 int total_servers = 0;
2727 int altered_servers = 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2728
2729 char *first_param, *cur_param, *next_param, *end_params;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]2730 char *st_cur_param = NULL;
2731 char *st_next_param = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2732
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2733 first_param = req->buf->p + txn->req.eoh + 2;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2734 end_params = first_param + txn->req.body_len;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2735
2736 cur_param = next_param = end_params;
2737
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2738 if (end_params >= req->buf->data + req->buf->size - global.tune.maxrewrite) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2739 /* Prevent buffer overflow */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2740 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2741 return 1;
2742 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2743 else if (end_params > req->buf->p + req->buf->i) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2744 /* we need more data */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2745 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2746 return 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2747 }
2748
2749 *end_params = '\0';
2750
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2751 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2752
2753 /*
2754 * Parse the parameters in reverse order to only store the last value.
2755 * From the html form, the backend and the action are at the end.
2756 */
2757 while (cur_param > first_param) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2758 char *value;
2759 int poffset, plen;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2760
2761 cur_param--;
2762 if ((*cur_param == '&') || (cur_param == first_param)) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2763 reprocess_servers:
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2764 /* Parse the key */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2765 poffset = (cur_param != first_param ? 1 : 0);
2766 plen = next_param - cur_param + (cur_param == first_param ? 1 : 0);
2767 if ((plen > 0) && (plen <= sizeof(key))) {
2768 strncpy(key, cur_param + poffset, plen);
2769 key[plen - 1] = '\0';
2770 } else {
2771 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
2772 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2773 }
2774
2775 /* Parse the value */
2776 value = key;
2777 while (*value != '\0' && *value != '=') {
2778 value++;
2779 }
2780 if (*value == '=') {
2781 /* Ok, a value is found, we can mark the end of the key */
2782 *value++ = '\0';
2783 }
2784
Willy Tarreaubf9c2fc2011-05-31 18:06:18 +0200[diff] [blame]2785 if (!url_decode(key) || !url_decode(value))
2786 break;
2787
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2788 /* Now we can check the key to see what to do */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2789 if (!px && (strcmp(key, "b") == 0)) {
2790 if ((px = findproxy(value, PR_CAP_BE)) == NULL) {
2791 /* the backend name is unknown or ambiguous (duplicate names) */
2792 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2793 goto out;
2794 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2795 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2796 else if (!action && (strcmp(key, "action") == 0)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2797 if (strcmp(value, "disable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2798 action = ST_ADM_ACTION_DISABLE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2799 }
2800 else if (strcmp(value, "enable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2801 action = ST_ADM_ACTION_ENABLE;
2802 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2803 else if (strcmp(value, "stop") == 0) {
2804 action = ST_ADM_ACTION_STOP;
2805 }
2806 else if (strcmp(value, "start") == 0) {
2807 action = ST_ADM_ACTION_START;
2808 }
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2809 else if (strcmp(value, "shutdown") == 0) {
2810 action = ST_ADM_ACTION_SHUTDOWN;
2811 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2812 else {
2813 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2814 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2815 }
2816 }
2817 else if (strcmp(key, "s") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2818 if (!(px && action)) {
2819 /*
2820 * Indicates that we'll need to reprocess the parameters
2821 * as soon as backend and action are known
2822 */
2823 if (!reprocess) {
2824 st_cur_param = cur_param;
2825 st_next_param = next_param;
2826 }
2827 reprocess = 1;
2828 }
2829 else if ((sv = findserver(px, value)) != NULL) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2830 switch (action) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2831 case ST_ADM_ACTION_DISABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2832 if ((px->state != PR_STSTOPPED) && !(sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2833 /* Not already in maintenance, we can change the server state */
2834 sv->state |= SRV_MAINTAIN;
2835 set_server_down(sv);
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2836 altered_servers++;
2837 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2838 }
2839 break;
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2840 case ST_ADM_ACTION_ENABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2841 if ((px->state != PR_STSTOPPED) && (sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2842 /* Already in maintenance, we can change the server state */
2843 set_server_up(sv);
Willy Tarreau70461302010-10-22 14:39:02 +0200[diff] [blame]2844 sv->health = sv->rise; /* up, but will fall down at first failure */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2845 altered_servers++;
2846 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2847 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2848 break;
2849 case ST_ADM_ACTION_STOP:
2850 case ST_ADM_ACTION_START:
2851 if (action == ST_ADM_ACTION_START)
2852 sv->uweight = sv->iweight;
2853 else
2854 sv->uweight = 0;
2855
2856 if (px->lbprm.algo & BE_LB_PROP_DYN) {
2857 /* we must take care of not pushing the server to full throttle during slow starts */
2858 if ((sv->state & SRV_WARMINGUP) && (px->lbprm.algo & BE_LB_PROP_DYN))
2859 sv->eweight = (BE_WEIGHT_SCALE * (now.tv_sec - sv->last_change) + sv->slowstart - 1) / sv->slowstart;
2860 else
2861 sv->eweight = BE_WEIGHT_SCALE;
2862 sv->eweight *= sv->uweight;
2863 } else {
2864 sv->eweight = sv->uweight;
2865 }
2866
2867 /* static LB algorithms are a bit harder to update */
2868 if (px->lbprm.update_server_eweight)
2869 px->lbprm.update_server_eweight(sv);
2870 else if (sv->eweight) {
2871 if (px->lbprm.set_server_status_up)
2872 px->lbprm.set_server_status_up(sv);
2873 }
2874 else {
2875 if (px->lbprm.set_server_status_down)
2876 px->lbprm.set_server_status_down(sv);
2877 }
2878 altered_servers++;
2879 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2880 break;
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2881 case ST_ADM_ACTION_SHUTDOWN:
2882 if (px->state != PR_STSTOPPED) {
2883 struct session *sess, *sess_bck;
2884
2885 list_for_each_entry_safe(sess, sess_bck, &sv->actconns, by_srv)
2886 if (sess->srv_conn == sv)
2887 session_shutdown(sess, SN_ERR_KILLED);
2888
2889 altered_servers++;
2890 total_servers++;
2891 }
2892 break;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2893 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2894 } else {
2895 /* the server name is unknown or ambiguous (duplicate names) */
2896 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2897 }
2898 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2899 if (reprocess && px && action) {
2900 /* Now, we know the backend and the action chosen by the user.
2901 * We can safely restart from the first server parameter
2902 * to reprocess them
2903 */
2904 cur_param = st_cur_param;
2905 next_param = st_next_param;
2906 reprocess = 0;
2907 goto reprocess_servers;
2908 }
2909
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2910 next_param = cur_param;
2911 }
2912 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2913
2914 if (total_servers == 0) {
2915 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
2916 }
2917 else if (altered_servers == 0) {
2918 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2919 }
2920 else if (altered_servers == total_servers) {
2921 si->applet.ctx.stats.st_code = STAT_STATUS_DONE;
2922 }
2923 else {
2924 si->applet.ctx.stats.st_code = STAT_STATUS_PART;
2925 }
2926 out:
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2927 return 1;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2928}
2929
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2930/* returns a pointer to the first rule which forbids access (deny or http_auth),
2931 * or NULL if everything's OK.
2932 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2933static inline struct http_req_rule *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2934http_check_access_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
2935{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2936 struct http_req_rule *rule;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2937
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2938 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2939 int ret = 1;
2940
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2941 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2942 continue;
2943
2944 /* check condition, but only if attached */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2945 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2946 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]2947 ret = acl_pass(ret);
2948
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2949 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2950 ret = !ret;
2951 }
2952
2953 if (ret) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2954 if (rule->action == HTTP_REQ_ACT_ALLOW)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2955 return NULL; /* no problem */
2956 else
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2957 return rule; /* most likely a deny or auth rule */
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2958 }
2959 }
2960 return NULL;
2961}
2962
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2963/* This stream analyser runs all HTTP request processing which is common to
2964 * frontends and backends, which means blocking ACLs, filters, connection-close,
2965 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2966 * 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]2967 * either needs more data or wants to immediately abort the request (eg: deny,
2968 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2969 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2970int 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]2971{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2972 struct http_txn *txn = &s->txn;
2973 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2974 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2975 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2976 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]2977 struct cond_wordlist *wl;
Simon Horman70735c92011-06-07 11:07:50 +0900[diff] [blame]2978 int do_stats;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2979
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2980 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2981 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2982 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2983 return 0;
2984 }
2985
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2986 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2987 req->analyse_exp = TICK_ETERNITY;
2988
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2989 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]2990 now_ms, __FUNCTION__,
2991 s,
2992 req,
2993 req->rex, req->wex,
2994 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2995 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2996 req->analysers);
2997
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2998 /* first check whether we have some ACLs set to block this request */
2999 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3000 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]3001
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3002 ret = acl_pass(ret);
3003 if (cond->pol == ACL_COND_UNLESS)
3004 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]3005
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3006 if (ret) {
3007 txn->status = 403;
3008 /* let's log the request time */
3009 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3010 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3011 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3012 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3013 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3014 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3015
Willy Tarreau5d5b5d82012-12-09 12:00:04 +0100[diff] [blame]3016 /* just in case we have some per-backend tracking */
3017 session_inc_be_http_req_ctr(s);
3018
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3019 /* evaluate http-request rules */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3020 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]3021
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3022 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3023 if (!http_req_last_rule) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3024 do_stats = stats_check_uri(s->rep->prod, txn, px);
3025 if (do_stats)
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3026 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]3027 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3028 else
3029 do_stats = 0;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3030
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3031 /* return a 403 if either rule has blocked */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3032 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]3033 txn->status = 403;
3034 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3035 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3036 session_inc_http_err_ctr(s);
Willy Tarreau6da0f6d2011-01-06 18:19:50 +0100[diff] [blame]3037 s->fe->fe_counters.denied_req++;
3038 if (an_bit == AN_REQ_HTTP_PROCESS_BE)
3039 s->be->be_counters.denied_req++;
3040 if (s->listener->counters)
3041 s->listener->counters->denied_req++;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3042 goto return_prx_cond;
3043 }
3044
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3045 /* try headers filters */
3046 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3047 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3048 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3049
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3050 /* has the request been denied ? */
3051 if (txn->flags & TX_CLDENY) {
3052 /* no need to go further */
3053 txn->status = 403;
3054 /* let's log the request time */
3055 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3056 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3057 session_inc_http_err_ctr(s);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3058 goto return_prx_cond;
3059 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3060
3061 /* When a connection is tarpitted, we use the tarpit timeout,
3062 * which may be the same as the connect timeout if unspecified.
3063 * If unset, then set it to zero because we really want it to
3064 * eventually expire. We build the tarpit as an analyser.
3065 */
3066 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3067 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3068 /* wipe the request out so that we can drop the connection early
3069 * if the client closes first.
3070 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3071 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3072 req->analysers = 0; /* remove switching rules etc... */
3073 req->analysers |= AN_REQ_HTTP_TARPIT;
3074 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3075 if (!req->analyse_exp)
3076 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3077 session_inc_http_err_ctr(s);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3078 return 1;
3079 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3080 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3081
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3082 /* Until set to anything else, the connection mode is set as TUNNEL. It will
3083 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3084 * Option httpclose by itself does not set a mode, it remains a tunnel mode
3085 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3086 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
3087 * avoid to redo the same work if FE and BE have the same settings (common).
3088 * The method consists in checking if options changed between the two calls
3089 * (implying that either one is non-null, or one of them is non-null and we
3090 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]3091 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3092
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]3093 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
3094 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
3095 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
3096 (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]3097 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3098
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3099 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
3100 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3101 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]3102 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
3103 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3104 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3105 tmp = TX_CON_WANT_CLO;
3106
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3107 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
3108 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3109
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3110 if (!(txn->flags & TX_HDR_CONN_PRS)) {
3111 /* parse the Connection header and possibly clean it */
3112 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3113 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]3114 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
3115 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3116 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3117 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3118 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3119 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3120 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3121
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3122 /* check if client or config asks for explicit close in KAL/SCL */
3123 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
3124 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
3125 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3126 (!(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]3127 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3128 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]3129 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3130 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3131 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]3132
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3133 /* we can be blocked here because the request needs to be authenticated,
3134 * either to pass or to access stats.
3135 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3136 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]3137 char *realm = http_req_last_rule->http_auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3138
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3139 if (!realm)
3140 realm = do_stats?STATS_DEFAULT_REALM:px->id;
3141
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3142 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]3143 txn->status = 401;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3144 stream_int_retnclose(req->prod, &trash);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3145 /* on 401 we still count one error, because normal browsing
3146 * won't significantly increase the counter but brute force
3147 * attempts will.
3148 */
3149 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3150 goto return_prx_cond;
3151 }
3152
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3153 /* add request headers from the rule sets in the same order */
3154 list_for_each_entry(wl, &px->req_add, list) {
3155 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3156 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]3157 ret = acl_pass(ret);
3158 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3159 ret = !ret;
3160 if (!ret)
3161 continue;
3162 }
3163
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3164 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3165 goto return_bad_req;
3166 }
3167
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3168 if (do_stats) {
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3169 struct stats_admin_rule *stats_admin_rule;
3170
3171 /* We need to provide stats for this request.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3172 * FIXME!!! that one is rather dangerous, we want to
3173 * make it follow standard rules (eg: clear req->analysers).
3174 */
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3175
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3176 /* now check whether we have some admin rules for this request */
3177 list_for_each_entry(stats_admin_rule, &s->be->uri_auth->admin_rules, list) {
3178 int ret = 1;
3179
3180 if (stats_admin_rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3181 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]3182 ret = acl_pass(ret);
3183 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3184 ret = !ret;
3185 }
3186
3187 if (ret) {
3188 /* no rule, or the rule matches */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3189 s->rep->prod->applet.ctx.stats.flags |= STAT_ADMIN;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3190 break;
3191 }
3192 }
3193
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3194 /* Was the status page requested with a POST ? */
3195 if (txn->meth == HTTP_METH_POST) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3196 if (s->rep->prod->applet.ctx.stats.flags & STAT_ADMIN) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3197 if (msg->msg_state < HTTP_MSG_100_SENT) {
3198 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3199 * send an HTTP/1.1 100 Continue intermediate response.
3200 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3201 if (msg->flags & HTTP_MSGF_VER_11) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3202 struct hdr_ctx ctx;
3203 ctx.idx = 0;
3204 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3205 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3206 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3207 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3208 }
3209 }
3210 msg->msg_state = HTTP_MSG_100_SENT;
3211 s->logs.tv_request = now; /* update the request timer to reflect full request */
3212 }
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3213 if (!http_process_req_stat_post(s->rep->prod, txn, req)) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3214 /* we need more data */
3215 req->analysers |= an_bit;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3216 channel_dont_connect(req);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3217 return 0;
3218 }
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3219 } else {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3220 s->rep->prod->applet.ctx.stats.st_code = STAT_STATUS_DENY;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3221 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3222 }
3223
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3224 s->logs.tv_request = now;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3225 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreaub24281b2011-02-13 13:16:36 +0100[diff] [blame]3226 stream_int_register_handler(s->rep->prod, &http_stats_applet);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]3227 s->target = s->rep->prod->conn->target; // for logging only
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3228 s->rep->prod->conn->xprt_ctx = s;
Willy Tarreaubc4af052011-02-13 13:25:14 +0100[diff] [blame]3229 s->rep->prod->applet.st0 = s->rep->prod->applet.st1 = 0;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3230 req->analysers = 0;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]3231 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3232 s->fe->fe_counters.intercepted_req++;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3233
3234 return 0;
3235
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3236 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3237
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3238 /* check whether we have some ACLs set to redirect this request */
3239 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3240 int ret = ACL_PAT_PASS;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3241
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3242 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3243 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]3244 ret = acl_pass(ret);
3245 if (rule->cond->pol == ACL_COND_UNLESS)
3246 ret = !ret;
3247 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3248
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3249 if (ret) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3250 const char *msg_fmt;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3251
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3252 /* build redirect message */
3253 switch(rule->code) {
3254 case 303:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3255 msg_fmt = HTTP_303;
3256 break;
3257 case 301:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3258 msg_fmt = HTTP_301;
3259 break;
3260 case 302:
3261 default:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3262 msg_fmt = HTTP_302;
3263 break;
3264 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3265
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3266 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3267 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3268
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3269 switch(rule->type) {
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3270 case REDIRECT_TYPE_SCHEME: {
3271 const char *path;
3272 const char *host;
3273 struct hdr_ctx ctx;
3274 int pathlen;
3275 int hostlen;
3276
3277 host = "";
3278 hostlen = 0;
3279 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3280 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]3281 host = ctx.line + ctx.val;
3282 hostlen = ctx.vlen;
3283 }
3284
3285 path = http_get_path(txn);
3286 /* build message using path */
3287 if (path) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3288 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]3289 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3290 int qs = 0;
3291 while (qs < pathlen) {
3292 if (path[qs] == '?') {
3293 pathlen = qs;
3294 break;
3295 }
3296 qs++;
3297 }
3298 }
3299 } else {
3300 path = "/";
3301 pathlen = 1;
3302 }
3303
3304 /* check if we can add scheme + "://" + host + path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3305 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3306 goto return_bad_req;
3307
3308 /* add scheme */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3309 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3310 trash.len += rule->rdr_len;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3311
3312 /* add "://" */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3313 memcpy(trash.str + trash.len, "://", 3);
3314 trash.len += 3;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3315
3316 /* add host */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3317 memcpy(trash.str + trash.len, host, hostlen);
3318 trash.len += hostlen;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3319
3320 /* add path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3321 memcpy(trash.str + trash.len, path, pathlen);
3322 trash.len += pathlen;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3323
3324 /* append a slash at the end of the location is needed and missing */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3325 if (trash.len && trash.str[trash.len - 1] != '/' &&
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3326 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3327 if (trash.len > trash.size - 5)
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3328 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3329 trash.str[trash.len] = '/';
3330 trash.len++;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3331 }
3332
3333 break;
3334 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3335 case REDIRECT_TYPE_PREFIX: {
3336 const char *path;
3337 int pathlen;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3338
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3339 path = http_get_path(txn);
3340 /* build message using path */
3341 if (path) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3342 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]3343 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3344 int qs = 0;
3345 while (qs < pathlen) {
3346 if (path[qs] == '?') {
3347 pathlen = qs;
3348 break;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3349 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3350 qs++;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3351 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3352 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3353 } else {
3354 path = "/";
3355 pathlen = 1;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3356 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3357
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3358 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3359 goto return_bad_req;
3360
3361 /* add prefix. Note that if prefix == "/", we don't want to
3362 * add anything, otherwise it makes it hard for the user to
3363 * configure a self-redirection.
3364 */
3365 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3366 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3367 trash.len += rule->rdr_len;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3368 }
3369
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3370 /* add path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3371 memcpy(trash.str + trash.len, path, pathlen);
3372 trash.len += pathlen;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3373
3374 /* append a slash at the end of the location is needed and missing */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3375 if (trash.len && trash.str[trash.len - 1] != '/' &&
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3376 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3377 if (trash.len > trash.size - 5)
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3378 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3379 trash.str[trash.len] = '/';
3380 trash.len++;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3381 }
3382
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3383 break;
3384 }
3385 case REDIRECT_TYPE_LOCATION:
3386 default:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3387 if (trash.len + rule->rdr_len > trash.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3388 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3389
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3390 /* add location */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3391 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3392 trash.len += rule->rdr_len;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3393 break;
3394 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3395
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3396 if (rule->cookie_len) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3397 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3398 trash.len += 14;
3399 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3400 trash.len += rule->cookie_len;
3401 memcpy(trash.str + trash.len, "\r\n", 2);
3402 trash.len += 2;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3403 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3404
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3405 /* add end of headers and the keep-alive/close status.
3406 * We may choose to set keep-alive if the Location begins
3407 * with a slash, because the client will come back to the
3408 * same server.
3409 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3410 txn->status = rule->code;
3411 /* let's log the request time */
3412 s->logs.tv_request = now;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3413
3414 if (rule->rdr_len >= 1 && *rule->rdr_str == '/' &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3415 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3416 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3417 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3418 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3419 /* keep-alive possible */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3420 if (!(msg->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3421 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3422 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3423 trash.len += 30;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3424 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3425 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3426 trash.len += 24;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3427 }
Willy Tarreau75661452010-01-10 10:35:01 +0100[diff] [blame]3428 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3429 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3430 trash.len += 4;
3431 bo_inject(req->prod->ob, trash.str, trash.len);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3432 /* "eat" the request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3433 bi_fast_delete(req->buf, msg->sov);
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3434 msg->sov = 0;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3435 req->analysers = AN_REQ_HTTP_XFER_BODY;
Willy Tarreau9300fb22010-01-05 00:58:24 +0100[diff] [blame]3436 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3437 txn->req.msg_state = HTTP_MSG_CLOSED;
3438 txn->rsp.msg_state = HTTP_MSG_DONE;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3439 break;
3440 } else {
3441 /* keep-alive not possible */
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3442 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3443 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3444 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3445 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3446 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3447 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3448 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3449 stream_int_retnclose(req->prod, &trash);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3450 goto return_prx_cond;
3451 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3452 }
3453 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3454
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3455 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3456 * If this happens, then the data will not come immediately, so we must
3457 * send all what we have without waiting. Note that due to the small gain
3458 * 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]3459 * 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]3460 * itself once used.
3461 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3462 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3463
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3464 /* that's OK for us now, let's move on to next analysers */
3465 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3466
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3467 return_bad_req:
3468 /* We centralize bad requests processing here */
3469 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3470 /* we detected a parsing error. We want to archive this request
3471 * in the dedicated proxy area for later troubleshooting.
3472 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3473 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]3474 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3475
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3476 txn->req.msg_state = HTTP_MSG_ERROR;
3477 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3478 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3479
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3480 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3481 if (s->listener->counters)
3482 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3483
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3484 return_prx_cond:
3485 if (!(s->flags & SN_ERR_MASK))
3486 s->flags |= SN_ERR_PRXCOND;
3487 if (!(s->flags & SN_FINST_MASK))
3488 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3489
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3490 req->analysers = 0;
3491 req->analyse_exp = TICK_ETERNITY;
3492 return 0;
3493}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3494
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3495/* This function performs all the processing enabled for the current request.
3496 * It returns 1 if the processing can continue on next analysers, or zero if it
3497 * needs more data, encounters an error, or wants to immediately abort the
3498 * request. It relies on buffers flags, and updates s->req->analysers.
3499 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3500int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3501{
3502 struct http_txn *txn = &s->txn;
3503 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3504
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3505 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3506 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3507 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3508 return 0;
3509 }
3510
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3511 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]3512 now_ms, __FUNCTION__,
3513 s,
3514 req,
3515 req->rex, req->wex,
3516 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3517 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3518 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3519
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]3520 if (s->fe->comp || s->be->comp)
3521 select_compression_request_header(s, req->buf);
3522
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3523 /*
3524 * Right now, we know that we have processed the entire headers
3525 * and that unwanted requests have been filtered out. We can do
3526 * whatever we want with the remaining request. Also, now we
3527 * may have separate values for ->fe, ->be.
3528 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3529
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3530 /*
3531 * If HTTP PROXY is set we simply get remote server address
3532 * parsing incoming request.
3533 */
3534 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3535 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]3536 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3537
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3538 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3539 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3540 * Note that doing so might move headers in the request, but
3541 * the fields will stay coherent and the URI will not move.
3542 * This should only be performed in the backend.
3543 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3544 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3545 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3546 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3547
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3548 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3549 * 8: the appsession cookie was looked up very early in 1.2,
3550 * so let's do the same now.
3551 */
3552
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3553 /* It needs to look into the URI unless persistence must be ignored */
3554 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3555 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]3556 }
3557
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3558 /* add unique-id if "header-unique-id" is specified */
3559
3560 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
3561 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
3562
3563 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3564 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
3565 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3566 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3567 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]3568 goto return_bad_req;
3569 }
3570
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3571 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3572 * 9: add X-Forwarded-For if either the frontend or the backend
3573 * asks for it.
3574 */
3575 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3576 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3577 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3578 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3579 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]3580 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3581 /* The header is set to be added only if none is present
3582 * and we found it, so don't do anything.
3583 */
3584 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3585 else if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3586 /* Add an X-Forwarded-For header unless the source IP is
3587 * in the 'except' network range.
3588 */
3589 if ((!s->fe->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3590 (((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]3591 != s->fe->except_net.s_addr) &&
3592 (!s->be->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3593 (((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]3594 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3595 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3596 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3597 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3598
3599 /* Note: we rely on the backend to get the header name to be used for
3600 * x-forwarded-for, because the header is really meant for the backends.
3601 * However, if the backend did not specify any option, we have to rely
3602 * on the frontend's header name.
3603 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3604 if (s->be->fwdfor_hdr_len) {
3605 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3606 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3607 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3608 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3609 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3610 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3611 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]3612
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3613 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]3614 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3615 }
3616 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3617 else if (s->req->prod->conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3618 /* FIXME: for the sake of completeness, we should also support
3619 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3620 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3621 int len;
3622 char pn[INET6_ADDRSTRLEN];
3623 inet_ntop(AF_INET6,
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3624 (const void *)&((struct sockaddr_in6 *)(&s->req->prod->conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3625 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3626
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3627 /* Note: we rely on the backend to get the header name to be used for
3628 * x-forwarded-for, because the header is really meant for the backends.
3629 * However, if the backend did not specify any option, we have to rely
3630 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3631 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3632 if (s->be->fwdfor_hdr_len) {
3633 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3634 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3635 } else {
3636 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3637 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3638 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3639 len += sprintf(trash.str + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3640
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3641 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]3642 goto return_bad_req;
3643 }
3644 }
3645
3646 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3647 * 10: add X-Original-To if either the frontend or the backend
3648 * asks for it.
3649 */
3650 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3651
3652 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3653 if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3654 /* Add an X-Original-To header unless the destination IP is
3655 * in the 'except' network range.
3656 */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3657 conn_get_to_addr(s->req->prod->conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3658
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3659 if (s->req->prod->conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3660 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3661 (((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]3662 != s->fe->except_to.s_addr) &&
3663 (!s->be->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3664 (((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]3665 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3666 int len;
3667 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3668 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3669
3670 /* Note: we rely on the backend to get the header name to be used for
3671 * x-original-to, because the header is really meant for the backends.
3672 * However, if the backend did not specify any option, we have to rely
3673 * on the frontend's header name.
3674 */
3675 if (s->be->orgto_hdr_len) {
3676 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3677 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3678 } else {
3679 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3680 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3681 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3682 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]3683
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3684 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]3685 goto return_bad_req;
3686 }
3687 }
3688 }
3689
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]3690 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
3691 * If an "Upgrade" token is found, the header is left untouched in order not to have
3692 * to deal with some servers bugs : some of them fail an Upgrade if anything but
3693 * "Upgrade" is present in the Connection header.
3694 */
3695 if (!(txn->flags & TX_HDR_CONN_UPG) &&
3696 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
3697 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3698 unsigned int want_flags = 0;
3699
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3700 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3701 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
3702 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
3703 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3704 want_flags |= TX_CON_CLO_SET;
3705 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3706 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3707 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3708 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3709 want_flags |= TX_CON_KAL_SET;
3710 }
3711
3712 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3713 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3714 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3715
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3716
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3717 /* If we have no server assigned yet and we're balancing on url_param
3718 * with a POST request, we may be interested in checking the body for
3719 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3720 */
3721 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3722 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3723 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3724 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3725 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3726 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3727 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3728
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3729 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3730 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3731#ifdef TCP_QUICKACK
3732 /* We expect some data from the client. Unless we know for sure
3733 * we already have a full request, we have to re-enable quick-ack
3734 * in case we previously disabled it, otherwise we might cause
3735 * the client to delay further data.
3736 */
3737 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3738 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3739 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]3740 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]3741#endif
3742 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]3743
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3744 /*************************************************************
3745 * OK, that's finished for the headers. We have done what we *
3746 * could. Let's switch to the DATA state. *
3747 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3748 req->analyse_exp = TICK_ETERNITY;
3749 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3750
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3751 /* if the server closes the connection, we want to immediately react
3752 * and close the socket to save packets and syscalls.
3753 */
3754 req->cons->flags |= SI_FL_NOHALF;
3755
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3756 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3757 /* OK let's go on with the BODY now */
3758 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3759
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3760 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3761 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3762 /* we detected a parsing error. We want to archive this request
3763 * in the dedicated proxy area for later troubleshooting.
3764 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3765 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]3766 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3767
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3768 txn->req.msg_state = HTTP_MSG_ERROR;
3769 txn->status = 400;
3770 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3771 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3772
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3773 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3774 if (s->listener->counters)
3775 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3776
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3777 if (!(s->flags & SN_ERR_MASK))
3778 s->flags |= SN_ERR_PRXCOND;
3779 if (!(s->flags & SN_FINST_MASK))
3780 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3781 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3782}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3783
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3784/* This function is an analyser which processes the HTTP tarpit. It always
3785 * returns zero, at the beginning because it prevents any other processing
3786 * from occurring, and at the end because it terminates the request.
3787 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3788int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3789{
3790 struct http_txn *txn = &s->txn;
3791
3792 /* This connection is being tarpitted. The CLIENT side has
3793 * already set the connect expiration date to the right
3794 * timeout. We just have to check that the client is still
3795 * there and that the timeout has not expired.
3796 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3797 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3798 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3799 !tick_is_expired(req->analyse_exp, now_ms))
3800 return 0;
3801
3802 /* We will set the queue timer to the time spent, just for
3803 * logging purposes. We fake a 500 server error, so that the
3804 * attacker will not suspect his connection has been tarpitted.
3805 * It will not cause trouble to the logs because we can exclude
3806 * the tarpitted connections by filtering on the 'PT' status flags.
3807 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3808 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
3809
3810 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3811 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3812 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3813
3814 req->analysers = 0;
3815 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3816
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3817 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3818 if (s->listener->counters)
3819 s->listener->counters->failed_req++;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3820
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3821 if (!(s->flags & SN_ERR_MASK))
3822 s->flags |= SN_ERR_PRXCOND;
3823 if (!(s->flags & SN_FINST_MASK))
3824 s->flags |= SN_FINST_T;
3825 return 0;
3826}
3827
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3828/* This function is an analyser which processes the HTTP request body. It looks
3829 * for parameters to be used for the load balancing algorithm (url_param). It
3830 * must only be called after the standard HTTP request processing has occurred,
3831 * because it expects the request to be parsed. It returns zero if it needs to
3832 * read more data, or 1 once it has completed its analysis.
3833 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3834int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3835{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3836 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3837 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3838 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3839
3840 /* We have to parse the HTTP request body to find any required data.
3841 * "balance url_param check_post" should have been the only way to get
3842 * into this. We were brought here after HTTP header analysis, so all
3843 * related structures are ready.
3844 */
3845
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3846 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
3847 goto missing_data;
3848
3849 if (msg->msg_state < HTTP_MSG_100_SENT) {
3850 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3851 * send an HTTP/1.1 100 Continue intermediate response.
3852 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3853 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3854 struct hdr_ctx ctx;
3855 ctx.idx = 0;
3856 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3857 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3858 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3859 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3860 }
3861 }
3862 msg->msg_state = HTTP_MSG_100_SENT;
3863 }
3864
3865 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3866 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3867 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3868 * is still null. We must save the body in msg->next because it
3869 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3870 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]3871 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3872
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3873 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3874 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
3875 else
3876 msg->msg_state = HTTP_MSG_DATA;
3877 }
3878
3879 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3880 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3881 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3882 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3883 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]3884 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3885
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3886 if (!ret)
3887 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3888 else if (ret < 0) {
3889 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3890 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3891 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3892 }
3893
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3894 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3895 * We have the first data byte is in msg->sov. We're waiting for at
3896 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3897 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3898
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3899 if (msg->body_len < limit)
3900 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3901
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3902 if (req->buf->i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3903 goto http_end;
3904
3905 missing_data:
3906 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3907 if (buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3908 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3909 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3910 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3911
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3912 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3913 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3914 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3915
3916 if (!(s->flags & SN_ERR_MASK))
3917 s->flags |= SN_ERR_CLITO;
3918 if (!(s->flags & SN_FINST_MASK))
3919 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3920 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3921 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3922
3923 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3924 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]3925 /* Not enough data. We'll re-use the http-request
3926 * timeout here. Ideally, we should set the timeout
3927 * relative to the accept() date. We just set the
3928 * request timeout once at the beginning of the
3929 * request.
3930 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3931 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3932 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]3933 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3934 return 0;
3935 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3936
3937 http_end:
3938 /* The situation will not evolve, so let's give up on the analysis. */
3939 s->logs.tv_request = now; /* update the request timer to reflect full request */
3940 req->analysers &= ~an_bit;
3941 req->analyse_exp = TICK_ETERNITY;
3942 return 1;
3943
3944 return_bad_req: /* let's centralize all bad requests */
3945 txn->req.msg_state = HTTP_MSG_ERROR;
3946 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3947 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3948
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3949 if (!(s->flags & SN_ERR_MASK))
3950 s->flags |= SN_ERR_PRXCOND;
3951 if (!(s->flags & SN_FINST_MASK))
3952 s->flags |= SN_FINST_R;
3953
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3954 return_err_msg:
3955 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3956 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3957 if (s->listener->counters)
3958 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3959 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3960}
3961
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3962/* send a server's name with an outgoing request over an established connection.
3963 * Note: this function is designed to be called once the request has been scheduled
3964 * for being forwarded. This is the reason why it rewinds the buffer before
3965 * proceeding.
3966 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]3967int 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]3968
3969 struct hdr_ctx ctx;
3970
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3971 char *hdr_name = be->server_id_hdr_name;
3972 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]3973 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3974 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3975 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3976
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]3977 ctx.idx = 0;
3978
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3979 old_o = chn->buf->o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3980 if (old_o) {
3981 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3982 b_rew(chn->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3983 }
3984
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3985 old_i = chn->buf->i;
3986 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]3987 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3988 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3989 }
3990
3991 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3992 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3993 memcpy(hdr_val, hdr_name, hdr_name_len);
3994 hdr_val += hdr_name_len;
3995 *hdr_val++ = ':';
3996 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3997 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
3998 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]3999
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4000 if (old_o) {
4001 /* If this was a forwarded request, we must readjust the amount of
4002 * data to be forwarded in order to take into account the size
4003 * variations.
4004 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4005 b_adv(chn->buf, old_o + chn->buf->i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4006 }
4007
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4008 return 0;
4009}
4010
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4011/* Terminate current transaction and prepare a new one. This is very tricky
4012 * right now but it works.
4013 */
4014void http_end_txn_clean_session(struct session *s)
4015{
4016 /* FIXME: We need a more portable way of releasing a backend's and a
4017 * server's connections. We need a safer way to reinitialize buffer
4018 * flags. We also need a more accurate method for computing per-request
4019 * data.
4020 */
4021 http_silent_debug(__LINE__, s);
4022
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4023 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]4024 si_shutr(s->req->cons);
4025 si_shutw(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4026
4027 http_silent_debug(__LINE__, s);
4028
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4029 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4030 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4031 if (unlikely(s->srv_conn))
4032 sess_change_server(s, NULL);
4033 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4034
4035 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4036 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]4037 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4038
4039 if (s->txn.status) {
4040 int n;
4041
4042 n = s->txn.status / 100;
4043 if (n < 1 || n > 5)
4044 n = 0;
4045
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4046 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4047 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4048 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4049 s->fe->fe_counters.p.http.comp_rsp++;
4050 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4051 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4052 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4053 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4054 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4055 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4056 s->be->be_counters.p.http.comp_rsp++;
4057 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4058 }
4059
4060 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4061 s->logs.bytes_in -= s->req->buf->i;
4062 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4063
4064 /* let's do a final log if we need it */
4065 if (s->logs.logwait &&
4066 !(s->flags & SN_MONITOR) &&
4067 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4068 s->do_log(s);
4069 }
4070
4071 s->logs.accept_date = date; /* user-visible date for logging */
4072 s->logs.tv_accept = now; /* corrected date for internal use */
4073 tv_zero(&s->logs.tv_request);
4074 s->logs.t_queue = -1;
4075 s->logs.t_connect = -1;
4076 s->logs.t_data = -1;
4077 s->logs.t_close = 0;
4078 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4079 s->logs.srv_queue_size = 0; /* we will get this number soon */
4080
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4081 s->logs.bytes_in = s->req->total = s->req->buf->i;
4082 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4083
4084 if (s->pend_pos)
4085 pendconn_free(s->pend_pos);
4086
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4087 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4088 if (s->flags & SN_CURR_SESS) {
4089 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4090 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4091 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4092 if (may_dequeue_tasks(objt_server(s->target), s->be))
4093 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4094 }
4095
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4096 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4097
4098 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]4099 s->req->cons->conn->t.sock.fd = -1; /* just to help with debugging */
4100 s->req->cons->conn->flags = CO_FL_NONE;
Willy Tarreau14cba4b2012-11-30 17:33:05 +0100[diff] [blame]4101 s->req->cons->conn->err_code = CO_ER_NONE;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4102 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4103 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4104 s->req->cons->err_loc = NULL;
4105 s->req->cons->exp = TICK_ETERNITY;
4106 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4107 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4108 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]4109 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]4110 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4111
4112 if (s->flags & SN_COMP_READY)
4113 s->comp_algo->end(&s->comp_ctx);
4114 s->comp_algo = NULL;
4115 s->flags &= ~SN_COMP_READY;
4116
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4117 s->txn.meth = 0;
4118 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4119 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4120 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4121 s->req->cons->flags |= SI_FL_INDEP_STR;
4122
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4123 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4124 s->req->flags |= CF_NEVER_WAIT;
4125 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4126 }
4127
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4128 /* if the request buffer is not empty, it means we're
4129 * about to process another request, so send pending
4130 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4131 * Just don't do this if the buffer is close to be full,
4132 * because the request will wait for it to flush a little
4133 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4134 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4135 if (s->req->buf->i) {
4136 if (s->rep->buf->o &&
4137 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4138 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]4139 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4140 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4141
4142 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4143 channel_auto_read(s->req);
4144 channel_auto_close(s->req);
4145 channel_auto_read(s->rep);
4146 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4147
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4148 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4149 s->rep->analysers = 0;
4150
4151 http_silent_debug(__LINE__, s);
4152}
4153
4154
4155/* This function updates the request state machine according to the response
4156 * state machine and buffer flags. It returns 1 if it changes anything (flag
4157 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4158 * it is only used to find when a request/response couple is complete. Both
4159 * this function and its equivalent should loop until both return zero. It
4160 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4161 */
4162int http_sync_req_state(struct session *s)
4163{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4164 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4165 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4166 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4167 unsigned int old_state = txn->req.msg_state;
4168
4169 http_silent_debug(__LINE__, s);
4170 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4171 return 0;
4172
4173 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4174 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4175 * We can shut the read side unless we want to abort_on_close,
4176 * or we have a POST request. The issue with POST requests is
4177 * that some browsers still send a CRLF after the request, and
4178 * this CRLF must be read so that it does not remain in the kernel
4179 * buffers, otherwise a close could cause an RST on some systems
4180 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4181 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4182 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4183 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4184
4185 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4186 goto wait_other_side;
4187
4188 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4189 /* The server has not finished to respond, so we
4190 * don't want to move in order not to upset it.
4191 */
4192 goto wait_other_side;
4193 }
4194
4195 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4196 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4197 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4198 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4199 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4200 goto wait_other_side;
4201 }
4202
4203 /* When we get here, it means that both the request and the
4204 * response have finished receiving. Depending on the connection
4205 * mode, we'll have to wait for the last bytes to leave in either
4206 * direction, and sometimes for a close to be effective.
4207 */
4208
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4209 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4210 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4211 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4212 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4213 }
4214 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4215 /* Option forceclose is set, or either side wants to close,
4216 * let's enforce it now that we're not expecting any new
4217 * data to come. The caller knows the session is complete
4218 * once both states are CLOSED.
4219 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4220 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4221 channel_shutr_now(chn);
4222 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4223 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4224 }
4225 else {
4226 /* The last possible modes are keep-alive and tunnel. Since tunnel
4227 * mode does not set the body analyser, we can't reach this place
4228 * in tunnel mode, so we're left with keep-alive only.
4229 * This mode is currently not implemented, we switch to tunnel mode.
4230 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4231 channel_auto_read(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4232 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4233 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4234 }
4235
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4236 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4237 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4238 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4239
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4240 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4241 txn->req.msg_state = HTTP_MSG_CLOSING;
4242 goto http_msg_closing;
4243 }
4244 else {
4245 txn->req.msg_state = HTTP_MSG_CLOSED;
4246 goto http_msg_closed;
4247 }
4248 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4249 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4250 }
4251
4252 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4253 http_msg_closing:
4254 /* nothing else to forward, just waiting for the output buffer
4255 * to be empty and for the shutw_now to take effect.
4256 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4257 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4258 txn->req.msg_state = HTTP_MSG_CLOSED;
4259 goto http_msg_closed;
4260 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4261 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4262 txn->req.msg_state = HTTP_MSG_ERROR;
4263 goto wait_other_side;
4264 }
4265 }
4266
4267 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4268 http_msg_closed:
4269 goto wait_other_side;
4270 }
4271
4272 wait_other_side:
4273 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4274 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4275}
4276
4277
4278/* This function updates the response state machine according to the request
4279 * state machine and buffer flags. It returns 1 if it changes anything (flag
4280 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4281 * it is only used to find when a request/response couple is complete. Both
4282 * this function and its equivalent should loop until both return zero. It
4283 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4284 */
4285int http_sync_res_state(struct session *s)
4286{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4287 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4288 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4289 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4290 unsigned int old_state = txn->rsp.msg_state;
4291
4292 http_silent_debug(__LINE__, s);
4293 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4294 return 0;
4295
4296 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4297 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4298 * still monitor the server connection for a possible close
4299 * while the request is being uploaded, so we don't disable
4300 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4301 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4302 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4303
4304 if (txn->req.msg_state == HTTP_MSG_ERROR)
4305 goto wait_other_side;
4306
4307 if (txn->req.msg_state < HTTP_MSG_DONE) {
4308 /* The client seems to still be sending data, probably
4309 * because we got an error response during an upload.
4310 * We have the choice of either breaking the connection
4311 * or letting it pass through. Let's do the later.
4312 */
4313 goto wait_other_side;
4314 }
4315
4316 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4317 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4318 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4319 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4320 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4321 goto wait_other_side;
4322 }
4323
4324 /* When we get here, it means that both the request and the
4325 * response have finished receiving. Depending on the connection
4326 * mode, we'll have to wait for the last bytes to leave in either
4327 * direction, and sometimes for a close to be effective.
4328 */
4329
4330 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4331 /* Server-close mode : shut read and wait for the request
4332 * side to close its output buffer. The caller will detect
4333 * when we're in DONE and the other is in CLOSED and will
4334 * catch that for the final cleanup.
4335 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4336 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4337 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4338 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4339 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4340 /* Option forceclose is set, or either side wants to close,
4341 * let's enforce it now that we're not expecting any new
4342 * data to come. The caller knows the session is complete
4343 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4344 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4345 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4346 channel_shutr_now(chn);
4347 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4348 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4349 }
4350 else {
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4351 /* The last possible modes are keep-alive and tunnel. Since tunnel
4352 * mode does not set the body analyser, we can't reach this place
4353 * in tunnel mode, so we're left with keep-alive only.
4354 * This mode is currently not implemented, we switch to tunnel mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4355 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4356 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4357 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4358 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4359 }
4360
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4361 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4362 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4363 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4364 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4365 goto http_msg_closing;
4366 }
4367 else {
4368 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4369 goto http_msg_closed;
4370 }
4371 }
4372 goto wait_other_side;
4373 }
4374
4375 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4376 http_msg_closing:
4377 /* nothing else to forward, just waiting for the output buffer
4378 * to be empty and for the shutw_now to take effect.
4379 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4380 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4381 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4382 goto http_msg_closed;
4383 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4384 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4385 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4386 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4387 if (objt_server(s->target))
4388 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4389 goto wait_other_side;
4390 }
4391 }
4392
4393 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4394 http_msg_closed:
4395 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4396 bi_erase(chn);
4397 channel_auto_close(chn);
4398 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4399 goto wait_other_side;
4400 }
4401
4402 wait_other_side:
4403 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4404 /* We force the response to leave immediately if we're waiting for the
4405 * other side, since there is no pending shutdown to push it out.
4406 */
4407 if (!channel_is_empty(chn))
4408 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4409 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4410}
4411
4412
4413/* Resync the request and response state machines. Return 1 if either state
4414 * changes.
4415 */
4416int http_resync_states(struct session *s)
4417{
4418 struct http_txn *txn = &s->txn;
4419 int old_req_state = txn->req.msg_state;
4420 int old_res_state = txn->rsp.msg_state;
4421
4422 http_silent_debug(__LINE__, s);
4423 http_sync_req_state(s);
4424 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4425 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4426 if (!http_sync_res_state(s))
4427 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4428 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4429 if (!http_sync_req_state(s))
4430 break;
4431 }
4432 http_silent_debug(__LINE__, s);
4433 /* OK, both state machines agree on a compatible state.
4434 * There are a few cases we're interested in :
4435 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4436 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4437 * directions, so let's simply disable both analysers.
4438 * - HTTP_MSG_CLOSED on the response only means we must abort the
4439 * request.
4440 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4441 * with server-close mode means we've completed one request and we
4442 * must re-initialize the server connection.
4443 */
4444
4445 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4446 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4447 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4448 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4449 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4450 channel_auto_close(s->req);
4451 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4452 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4453 channel_auto_close(s->rep);
4454 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4455 }
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4456 else if (txn->rsp.msg_state == HTTP_MSG_CLOSED ||
4457 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4458 txn->req.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4459 (s->rep->flags & CF_SHUTW)) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4460 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4461 channel_auto_close(s->rep);
4462 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4463 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4464 channel_abort(s->req);
4465 channel_auto_close(s->req);
4466 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4467 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4468 }
4469 else if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4470 txn->rsp.msg_state == HTTP_MSG_DONE &&
4471 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)) {
4472 /* server-close: terminate this server connection and
4473 * reinitialize a fresh-new transaction.
4474 */
4475 http_end_txn_clean_session(s);
4476 }
4477
4478 http_silent_debug(__LINE__, s);
4479 return txn->req.msg_state != old_req_state ||
4480 txn->rsp.msg_state != old_res_state;
4481}
4482
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4483/* This function is an analyser which forwards request body (including chunk
4484 * sizes if any). It is called as soon as we must forward, even if we forward
4485 * zero byte. The only situation where it must not be called is when we're in
4486 * tunnel mode and we want to forward till the close. It's used both to forward
4487 * remaining data and to resync after end of body. It expects the msg_state to
4488 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4489 * 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]4490 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4491 * bytes of pending data + the headers if not already done (between sol and sov).
4492 * 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]4493 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4494int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4495{
4496 struct http_txn *txn = &s->txn;
4497 struct http_msg *msg = &s->txn.req;
4498
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4499 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4500 return 0;
4501
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4502 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]4503 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4504 /* Output closed while we were sending data. We must abort and
4505 * wake the other side up.
4506 */
4507 msg->msg_state = HTTP_MSG_ERROR;
4508 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4509 return 1;
4510 }
4511
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4512 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4513 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4514
4515 /* Note that we don't have to send 100-continue back because we don't
4516 * need the data to complete our job, and it's up to the server to
4517 * decide whether to return 100, 417 or anything else in return of
4518 * an "Expect: 100-continue" header.
4519 */
4520
4521 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4522 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4523 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4524 * is still null. We must save the body in msg->next because it
4525 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4526 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4527 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4528
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4529 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4530 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4531 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4532 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4533 }
4534
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4535 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4536 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4537
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4538 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4539 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4540 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4541 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4542 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4543 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4544 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4545 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4546 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4547
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4548 if (msg->msg_state == HTTP_MSG_DATA) {
4549 /* must still forward */
4550 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4551 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4552
4553 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4554 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4555 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4556 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4557 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4558 }
4559 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4560 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4561 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4562 * TRAILERS state.
4563 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4564 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4565
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4566 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4567 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4568 else if (ret < 0) {
4569 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4570 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4571 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]4572 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4573 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4574 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4575 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4576 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4577 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4578 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4579
4580 if (ret == 0)
4581 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4582 else if (ret < 0) {
4583 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4584 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4585 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]4586 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4587 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4588 /* we're in MSG_CHUNK_SIZE now */
4589 }
4590 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4591 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4592
4593 if (ret == 0)
4594 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4595 else if (ret < 0) {
4596 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4597 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4598 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]4599 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4600 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4601 /* we're in HTTP_MSG_DONE now */
4602 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4603 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4604 int old_state = msg->msg_state;
4605
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4606 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4607 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4608 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4609 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4610 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4611 if (http_resync_states(s)) {
4612 /* some state changes occurred, maybe the analyser
4613 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4614 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4615 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4616 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4617 /* request errors are most likely due to
4618 * the server aborting the transfer.
4619 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4620 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4621 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4622 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4623 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4624 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4625 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4626 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4627 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4628
4629 /* If "option abortonclose" is set on the backend, we
4630 * want to monitor the client's connection and forward
4631 * any shutdown notification to the server, which will
4632 * decide whether to close or to go on processing the
4633 * request.
4634 */
4635 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4636 channel_auto_read(req);
4637 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4638 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4639 else if (s->txn.meth == HTTP_METH_POST) {
4640 /* POST requests may require to read extra CRLF
4641 * sent by broken browsers and which could cause
4642 * an RST to be sent upon close on some systems
4643 * (eg: Linux).
4644 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4645 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4646 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4647
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4648 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4649 }
4650 }
4651
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4652 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4653 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4654 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4655 if (!(s->flags & SN_ERR_MASK))
4656 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4657 if (!(s->flags & SN_FINST_MASK)) {
4658 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4659 s->flags |= SN_FINST_H;
4660 else
4661 s->flags |= SN_FINST_D;
4662 }
4663
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4664 s->fe->fe_counters.cli_aborts++;
4665 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4666 if (objt_server(s->target))
4667 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4668
4669 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4670 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4671
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4672 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4673 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4674 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4675
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4676 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4677 * 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]4678 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4679 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4680 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4681
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4682 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4683 * 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]4684 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4685 * modes are already handled by the stream sock layer. We must not do
4686 * this in content-length mode because it could present the MSG_MORE
4687 * flag with the last block of forwarded data, which would cause an
4688 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4689 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4690 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4691 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4692
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4693 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4694 return 0;
4695
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4696 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4697 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4698 if (s->listener->counters)
4699 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4700 return_bad_req_stats_ok:
4701 txn->req.msg_state = HTTP_MSG_ERROR;
4702 if (txn->status) {
4703 /* Note: we don't send any error if some data were already sent */
4704 stream_int_retnclose(req->prod, NULL);
4705 } else {
4706 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4707 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4708 }
4709 req->analysers = 0;
4710 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]4711
4712 if (!(s->flags & SN_ERR_MASK))
4713 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4714 if (!(s->flags & SN_FINST_MASK)) {
4715 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4716 s->flags |= SN_FINST_H;
4717 else
4718 s->flags |= SN_FINST_D;
4719 }
4720 return 0;
4721
4722 aborted_xfer:
4723 txn->req.msg_state = HTTP_MSG_ERROR;
4724 if (txn->status) {
4725 /* Note: we don't send any error if some data were already sent */
4726 stream_int_retnclose(req->prod, NULL);
4727 } else {
4728 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4729 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4730 }
4731 req->analysers = 0;
4732 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
4733
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4734 s->fe->fe_counters.srv_aborts++;
4735 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4736 if (objt_server(s->target))
4737 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4738
4739 if (!(s->flags & SN_ERR_MASK))
4740 s->flags |= SN_ERR_SRVCL;
4741 if (!(s->flags & SN_FINST_MASK)) {
4742 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4743 s->flags |= SN_FINST_H;
4744 else
4745 s->flags |= SN_FINST_D;
4746 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4747 return 0;
4748}
4749
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4750/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4751 * processing can continue on next analysers, or zero if it either needs more
4752 * data or wants to immediately abort the response (eg: timeout, error, ...). It
4753 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
4754 * when it has nothing left to do, and may remove any analyser when it wants to
4755 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4756 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4757int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4758{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4759 struct http_txn *txn = &s->txn;
4760 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4761 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4762 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4763 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4764 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4765
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4766 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]4767 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4768 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4769 rep,
4770 rep->rex, rep->wex,
4771 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4772 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4773 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]4774
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4775 /*
4776 * Now parse the partial (or complete) lines.
4777 * We will check the response syntax, and also join multi-line
4778 * headers. An index of all the lines will be elaborated while
4779 * parsing.
4780 *
4781 * For the parsing, we use a 28 states FSM.
4782 *
4783 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4784 * rep->buf->p = beginning of response
4785 * rep->buf->p + msg->eoh = end of processed headers / start of current one
4786 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4787 * msg->eol = end of current header or line (LF or CRLF)
4788 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4789 */
4790
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4791 /* There's a protected area at the end of the buffer for rewriting
4792 * purposes. We don't want to start to parse the request if the
4793 * protected area is affected, because we may have to move processed
4794 * data later, which is much more complicated.
4795 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4796 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]4797 if (unlikely(channel_full(rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4798 bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
4799 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite)) {
4800 if (rep->buf->o) {
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4801 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4802 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4803 goto abort_response;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4804 channel_dont_close(rep);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4805 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4806 return 0;
4807 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4808 if (rep->buf->i <= rep->buf->size - global.tune.maxrewrite)
4809 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4810 }
4811
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4812 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]4813 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4814 }
4815
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4816 /* 1: we might have to print this header in debug mode */
4817 if (unlikely((global.mode & MODE_DEBUG) &&
4818 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4819 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4820 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4821
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4822 sol = rep->buf->p;
4823 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4824 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4825
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4826 sol += hdr_idx_first_pos(&txn->hdr_idx);
4827 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4828
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4829 while (cur_idx) {
4830 eol = sol + txn->hdr_idx.v[cur_idx].len;
4831 debug_hdr("srvhdr", s, sol, eol);
4832 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
4833 cur_idx = txn->hdr_idx.v[cur_idx].next;
4834 }
4835 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4836
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4837 /*
4838 * Now we quickly check if we have found a full valid response.
4839 * If not so, we check the FD and buffer states before leaving.
4840 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4841 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4842 * responses are checked first.
4843 *
4844 * Depending on whether the client is still there or not, we
4845 * may send an error response back or not. Note that normally
4846 * we should only check for HTTP status there, and check I/O
4847 * errors somewhere else.
4848 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4849
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4850 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4851 /* Invalid response */
4852 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
4853 /* we detected a parsing error. We want to archive this response
4854 * in the dedicated proxy area for later troubleshooting.
4855 */
4856 hdr_response_bad:
4857 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4858 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]4859
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4860 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4861 if (objt_server(s->target)) {
4862 objt_server(s->target)->counters.failed_resp++;
4863 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4864 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4865 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4866 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4867 rep->analysers = 0;
4868 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4869 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4870 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4871 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4872
4873 if (!(s->flags & SN_ERR_MASK))
4874 s->flags |= SN_ERR_PRXCOND;
4875 if (!(s->flags & SN_FINST_MASK))
4876 s->flags |= SN_FINST_H;
4877
4878 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4879 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4880
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4881 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4882 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]4883 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4884 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4885 goto hdr_response_bad;
4886 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4887
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4888 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4889 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4890 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4891 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]4892
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4893 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4894 if (objt_server(s->target)) {
4895 objt_server(s->target)->counters.failed_resp++;
4896 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4897 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]4898
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4899 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4900 rep->analysers = 0;
4901 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4902 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4903 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4904 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]4905
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4906 if (!(s->flags & SN_ERR_MASK))
4907 s->flags |= SN_ERR_SRVCL;
4908 if (!(s->flags & SN_FINST_MASK))
4909 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]4910 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4911 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4912
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4913 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4914 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4915 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4916 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]4917
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4918 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4919 if (objt_server(s->target)) {
4920 objt_server(s->target)->counters.failed_resp++;
4921 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4922 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4923
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4924 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4925 rep->analysers = 0;
4926 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4927 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4928 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4929 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4930
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4931 if (!(s->flags & SN_ERR_MASK))
4932 s->flags |= SN_ERR_SRVTO;
4933 if (!(s->flags & SN_FINST_MASK))
4934 s->flags |= SN_FINST_H;
4935 return 0;
4936 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]4937
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]4938 /* client abort with an abortonclose */
4939 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
4940 s->fe->fe_counters.cli_aborts++;
4941 s->be->be_counters.cli_aborts++;
4942 if (objt_server(s->target))
4943 objt_server(s->target)->counters.cli_aborts++;
4944
4945 rep->analysers = 0;
4946 channel_auto_close(rep);
4947
4948 txn->status = 400;
4949 bi_erase(rep);
4950 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
4951
4952 if (!(s->flags & SN_ERR_MASK))
4953 s->flags |= SN_ERR_CLICL;
4954 if (!(s->flags & SN_FINST_MASK))
4955 s->flags |= SN_FINST_H;
4956
4957 /* process_session() will take care of the error */
4958 return 0;
4959 }
4960
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4961 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4962 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4963 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4964 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]4965
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4966 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4967 if (objt_server(s->target)) {
4968 objt_server(s->target)->counters.failed_resp++;
4969 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4970 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4971
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4972 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4973 rep->analysers = 0;
4974 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4975 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4976 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4977 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4978
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4979 if (!(s->flags & SN_ERR_MASK))
4980 s->flags |= SN_ERR_SRVCL;
4981 if (!(s->flags & SN_FINST_MASK))
4982 s->flags |= SN_FINST_H;
4983 return 0;
4984 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4985
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4986 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4987 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4988 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4989 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]4990
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4991 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4992 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4993 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4994
4995 if (!(s->flags & SN_ERR_MASK))
4996 s->flags |= SN_ERR_CLICL;
4997 if (!(s->flags & SN_FINST_MASK))
4998 s->flags |= SN_FINST_H;
4999
5000 /* process_session() will take care of the error */
5001 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5002 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5003
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5004 channel_dont_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5005 return 0;
5006 }
5007
5008 /* More interesting part now : we know that we have a complete
5009 * response which at least looks like HTTP. We have an indicator
5010 * of each header's length, so we can parse them quickly.
5011 */
5012
5013 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5014 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]5015
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5016 /*
5017 * 1: get the status code
5018 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5019 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5020 if (n < 1 || n > 5)
5021 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5022 /* when the client triggers a 4xx from the server, it's most often due
5023 * to a missing object or permission. These events should be tracked
5024 * because if they happen often, it may indicate a brute force or a
5025 * vulnerability scan.
5026 */
5027 if (n == 4)
5028 session_inc_http_err_ctr(s);
5029
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5030 if (objt_server(s->target))
5031 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5032
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5033 /* check if the response is HTTP/1.1 or above */
5034 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5035 ((rep->buf->p[5] > '1') ||
5036 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5037 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5038
5039 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5040 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]5041
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5042 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5043 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5044
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5045 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]5046
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5047 /* Adjust server's health based on status code. Note: status codes 501
5048 * and 505 are triggered on demand by client request, so we must not
5049 * count them as server failures.
5050 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5051 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5052 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5053 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5054 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5055 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5056 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5057
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5058 /*
5059 * 2: check for cacheability.
5060 */
5061
5062 switch (txn->status) {
5063 case 200:
5064 case 203:
5065 case 206:
5066 case 300:
5067 case 301:
5068 case 410:
5069 /* RFC2616 @13.4:
5070 * "A response received with a status code of
5071 * 200, 203, 206, 300, 301 or 410 MAY be stored
5072 * by a cache (...) unless a cache-control
5073 * directive prohibits caching."
5074 *
5075 * RFC2616 @9.5: POST method :
5076 * "Responses to this method are not cacheable,
5077 * unless the response includes appropriate
5078 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5079 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5080 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5081 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5082 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5083 break;
5084 default:
5085 break;
5086 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5087
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5088 /*
5089 * 3: we may need to capture headers
5090 */
5091 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5092 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5093 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5094 txn->rsp.cap, s->fe->rsp_cap);
5095
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5096 /* 4: determine the transfer-length.
5097 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5098 * the presence of a message-body in a RESPONSE and its transfer length
5099 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5100 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5101 * All responses to the HEAD request method MUST NOT include a
5102 * message-body, even though the presence of entity-header fields
5103 * might lead one to believe they do. All 1xx (informational), 204
5104 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5105 * message-body. All other responses do include a message-body,
5106 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5107 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5108 * 1. Any response which "MUST NOT" include a message-body (such as the
5109 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5110 * always terminated by the first empty line after the header fields,
5111 * regardless of the entity-header fields present in the message.
5112 *
5113 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5114 * the "chunked" transfer-coding (Section 6.2) is used, the
5115 * transfer-length is defined by the use of this transfer-coding.
5116 * If a Transfer-Encoding header field is present and the "chunked"
5117 * transfer-coding is not present, the transfer-length is defined by
5118 * the sender closing the connection.
5119 *
5120 * 3. If a Content-Length header field is present, its decimal value in
5121 * OCTETs represents both the entity-length and the transfer-length.
5122 * If a message is received with both a Transfer-Encoding header
5123 * field and a Content-Length header field, the latter MUST be ignored.
5124 *
5125 * 4. If the message uses the media type "multipart/byteranges", and
5126 * the transfer-length is not otherwise specified, then this self-
5127 * delimiting media type defines the transfer-length. This media
5128 * type MUST NOT be used unless the sender knows that the recipient
5129 * can parse it; the presence in a request of a Range header with
5130 * multiple byte-range specifiers from a 1.1 client implies that the
5131 * client can parse multipart/byteranges responses.
5132 *
5133 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5134 */
5135
5136 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5137 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5138 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5139 * FIXME: should we parse anyway and return an error on chunked encoding ?
5140 */
5141 if (txn->meth == HTTP_METH_HEAD ||
5142 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5143 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5144 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]5145 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5146 goto skip_content_length;
5147 }
5148
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5149 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5150 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5151 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5152 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5153 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5154 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5155 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5156 /* bad transfer-encoding (chunked followed by something else) */
5157 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5158 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5159 break;
5160 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5161 }
5162
5163 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5164 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5165 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5166 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5167 signed long long cl;
5168
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5169 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5170 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5171 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5172 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5173
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5174 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5175 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5176 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5177 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5178
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5179 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5180 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5181 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5182 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5183
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5184 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5185 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5186 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5187 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5188
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5189 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5190 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5191 }
5192
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5193 if (s->fe->comp || s->be->comp)
5194 select_compression_response_header(s, rep->buf);
5195
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5196 /* FIXME: we should also implement the multipart/byterange method.
5197 * For now on, we resort to close mode in this case (unknown length).
5198 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5199skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5200
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5201 /* end of job, return OK */
5202 rep->analysers &= ~an_bit;
5203 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5204 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5205 return 1;
5206}
5207
5208/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5209 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5210 * and updates t->rep->analysers. It might make sense to explode it into several
5211 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5212 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5213int 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]5214{
5215 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5216 struct http_msg *msg = &txn->rsp;
5217 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5218 struct cond_wordlist *wl;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5219
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5220 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]5221 now_ms, __FUNCTION__,
5222 t,
5223 rep,
5224 rep->rex, rep->wex,
5225 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5226 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5227 rep->analysers);
5228
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5229 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5230 return 0;
5231
5232 rep->analysers &= ~an_bit;
5233 rep->analyse_exp = TICK_ETERNITY;
5234
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5235 /* Now we have to check if we need to modify the Connection header.
5236 * This is more difficult on the response than it is on the request,
5237 * because we can have two different HTTP versions and we don't know
5238 * how the client will interprete a response. For instance, let's say
5239 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5240 * HTTP/1.1 response without any header. Maybe it will bound itself to
5241 * HTTP/1.0 because it only knows about it, and will consider the lack
5242 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5243 * the lack of header as a keep-alive. Thus we will use two flags
5244 * indicating how a request MAY be understood by the client. In case
5245 * of multiple possibilities, we'll fix the header to be explicit. If
5246 * ambiguous cases such as both close and keepalive are seen, then we
5247 * will fall back to explicit close. Note that we won't take risks with
5248 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5249 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5250 */
5251
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5252 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5253 txn->status == 101)) {
5254 /* Either we've established an explicit tunnel, or we're
5255 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5256 * to understand the next protocols. We have to switch to tunnel
5257 * mode, so that we transfer the request and responses then let
5258 * this protocol pass unmodified. When we later implement specific
5259 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5260 * header which contains information about that protocol for
5261 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5262 */
5263 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5264 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5265 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5266 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5267 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5268 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5269
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5270 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5271 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5272 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5273 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5274
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5275 /* now adjust header transformations depending on current state */
5276 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5277 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5278 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5279 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5280 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5281 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5282 else { /* SCL / KAL */
5283 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5284 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5285 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5286 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5287
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5288 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5289 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5290
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5291 /* Some keep-alive responses are converted to Server-close if
5292 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5293 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5294 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5295 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5296 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5297 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5298 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5299 }
5300
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5301 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5302 /*
5303 * 3: we will have to evaluate the filters.
5304 * As opposed to version 1.2, now they will be evaluated in the
5305 * filters order and not in the header order. This means that
5306 * each filter has to be validated among all headers.
5307 *
5308 * Filters are tried with ->be first, then with ->fe if it is
5309 * different from ->be.
5310 */
5311
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5312 cur_proxy = t->be;
5313 while (1) {
5314 struct proxy *rule_set = cur_proxy;
5315
5316 /* try headers filters */
5317 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5318 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5319 return_bad_resp:
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5320 if (objt_server(t->target)) {
5321 objt_server(t->target)->counters.failed_resp++;
5322 health_adjust(objt_server(t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5323 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5324 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5325 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5326 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5327 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5328 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5329 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5330 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5331 if (!(t->flags & SN_ERR_MASK))
5332 t->flags |= SN_ERR_PRXCOND;
5333 if (!(t->flags & SN_FINST_MASK))
5334 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5335 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5336 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5337 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5338
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5339 /* has the response been denied ? */
5340 if (txn->flags & TX_SVDENY) {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5341 if (objt_server(t->target))
5342 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5343
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5344 t->be->be_counters.denied_resp++;
5345 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5346 if (t->listener->counters)
5347 t->listener->counters->denied_resp++;
5348
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5349 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5350 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5351
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5352 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5353 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5354 if (txn->status < 200)
5355 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5356 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5357 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]5358 ret = acl_pass(ret);
5359 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5360 ret = !ret;
5361 if (!ret)
5362 continue;
5363 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5364 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5365 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5366 }
5367
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5368 /* check whether we're already working on the frontend */
5369 if (cur_proxy == t->fe)
5370 break;
5371 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5372 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5373
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5374 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5375 * We may be facing a 100-continue response, in which case this
5376 * is not the right response, and we're waiting for the next one.
5377 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5378 * next one.
5379 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5380 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5381 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5382 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5383 msg->msg_state = HTTP_MSG_RPBEFORE;
5384 txn->status = 0;
5385 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5386 return 1;
5387 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5388 else if (unlikely(txn->status < 200))
5389 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5390
5391 /* we don't have any 1xx status code now */
5392
5393 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5394 * 4: check for server cookie.
5395 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5396 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5397 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5398 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5399
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5400
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5401 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5402 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5403 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5404 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]5405 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5406
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5407 /*
5408 * 6: add server cookie in the response if needed
5409 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5410 if (objt_server(t->target) && (t->be->ck_opts & PR_CK_INS) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5411 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5412 (!(t->flags & SN_DIRECT) ||
5413 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5414 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5415 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5416 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5417 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5418 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5419 /* the server is known, it's not the one the client requested, or the
5420 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5421 * insert a set-cookie here, except if we want to insert only on POST
5422 * requests and this one isn't. Note that servers which don't have cookies
5423 * (eg: some backup servers) will return a full cookie removal request.
5424 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5425 if (!objt_server(t->target)->cookie) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5426 chunk_printf(&trash,
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5427 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5428 t->be->cookie_name);
5429 }
5430 else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5431 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]5432
5433 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5434 /* emit last_date, which is mandatory */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5435 trash.str[trash.len++] = COOKIE_DELIM_DATE;
5436 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
5437 trash.len += 5;
5438
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5439 if (t->be->cookie_maxlife) {
5440 /* emit first_date, which is either the original one or
5441 * the current date.
5442 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5443 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5444 s30tob64(txn->cookie_first_date ?
5445 txn->cookie_first_date >> 2 :
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5446 (date.tv_sec+3) >> 2, trash.str + trash.len);
5447 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5448 }
5449 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5450 chunk_appendf(&trash, "; path=/");
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5451 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5452
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5453 if (t->be->cookie_domain)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5454 chunk_appendf(&trash, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5455
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5456 if (t->be->ck_opts & PR_CK_HTTPONLY)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5457 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5458
5459 if (t->be->ck_opts & PR_CK_SECURE)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5460 chunk_appendf(&trash, "; Secure");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5461
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5462 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]5463 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5464
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5465 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5466 if (objt_server(t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5467 /* the server did not change, only the date was updated */
5468 txn->flags |= TX_SCK_UPDATED;
5469 else
5470 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5471
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5472 /* Here, we will tell an eventual cache on the client side that we don't
5473 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5474 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5475 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5476 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5477 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5478
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5479 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5480
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5481 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5482 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5483 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5484 }
5485 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5486
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5487 /*
5488 * 7: check if result will be cacheable with a cookie.
5489 * We'll block the response if security checks have caught
5490 * nasty things such as a cacheable cookie.
5491 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5492 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5493 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5494 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5495
5496 /* we're in presence of a cacheable response containing
5497 * a set-cookie header. We'll block it as requested by
5498 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5499 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5500 if (objt_server(t->target))
5501 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5502
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5503 t->be->be_counters.denied_resp++;
5504 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5505 if (t->listener->counters)
5506 t->listener->counters->denied_resp++;
5507
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5508 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5509 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5510 send_log(t->be, LOG_ALERT,
5511 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5512 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5513 goto return_srv_prx_502;
5514 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5515
5516 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5517 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5518 * If an "Upgrade" token is found, the header is left untouched in order
5519 * not to have to deal with some client bugs : some of them fail an upgrade
5520 * if anything but "Upgrade" is present in the Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5521 */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5522 if (!(txn->flags & TX_HDR_CONN_UPG) &&
5523 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5524 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5525 unsigned int want_flags = 0;
5526
5527 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5528 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5529 /* we want a keep-alive response here. Keep-alive header
5530 * required if either side is not 1.1.
5531 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5532 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5533 want_flags |= TX_CON_KAL_SET;
5534 }
5535 else {
5536 /* we want a close response here. Close header required if
5537 * the server is 1.1, regardless of the client.
5538 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5539 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5540 want_flags |= TX_CON_CLO_SET;
5541 }
5542
5543 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5544 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5545 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5546
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5547 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5548 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5549 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5550 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5551
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5552 /*************************************************************
5553 * OK, that's finished for the headers. We have done what we *
5554 * could. Let's switch to the DATA state. *
5555 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5556
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5557 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5558
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5559 /* if the user wants to log as soon as possible, without counting
5560 * bytes from the server, then this is the right moment. We have
5561 * to temporarily assign bytes_out to log what we currently have.
5562 */
5563 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
5564 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5565 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5566 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5567 t->logs.bytes_out = 0;
5568 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5569
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5570 /* Note: we must not try to cheat by jumping directly to DATA,
5571 * otherwise we would not let the client side wake up.
5572 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5573
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5574 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5575 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5576 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5577}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5578
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5579/* This function is an analyser which forwards response body (including chunk
5580 * sizes if any). It is called as soon as we must forward, even if we forward
5581 * zero byte. The only situation where it must not be called is when we're in
5582 * tunnel mode and we want to forward till the close. It's used both to forward
5583 * remaining data and to resync after end of body. It expects the msg_state to
5584 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5585 * 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]5586 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5587 * bytes of pending data + the headers if not already done (between sol and sov).
5588 * 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]5589 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5590int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5591{
5592 struct http_txn *txn = &s->txn;
5593 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5594 unsigned int bytes;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5595 static struct buffer *tmpbuf = NULL;
5596 int compressing = 0;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5597 int consumed_data = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5598
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5599 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5600 return 0;
5601
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5602 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]5603 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5604 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5605 /* Output closed while we were sending data. We must abort and
5606 * wake the other side up.
5607 */
5608 msg->msg_state = HTTP_MSG_ERROR;
5609 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5610 return 1;
5611 }
5612
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5613 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5614 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5615
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5616 /* this is the first time we need the compression buffer */
5617 if (s->comp_algo != NULL && tmpbuf == NULL) {
5618 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
5619 goto aborted_xfer; /* no memory */
5620 }
5621
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5622 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5623 /* we have msg->sov which points to the first byte of message body.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5624 * rep->buf.p still points to the beginning of the message and msg->sol
5625 * is still null. We forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5626 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5627 channel_forward(res, msg->sov);
5628 msg->next = 0;
5629 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5630
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5631 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5632 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5633 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5634 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5635 }
5636
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5637 if (s->comp_algo != NULL) {
5638 int ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
5639 if (ret < 0)
5640 goto missing_data; /* not enough spaces in buffers */
5641 compressing = 1;
5642 }
5643
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5644 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5645 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5646 /* we may have some data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5647 if (s->comp_algo == NULL) {
5648 bytes = msg->sov - msg->sol;
5649 if (msg->chunk_len || bytes) {
5650 msg->sol = msg->sov;
5651 msg->next -= bytes; /* will be forwarded */
5652 msg->chunk_len += bytes;
5653 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5654 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5655 }
5656
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5657 if (msg->msg_state == HTTP_MSG_DATA) {
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5658 int ret;
5659
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5660 /* must still forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5661 if (compressing) {
5662 consumed_data += ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
5663 if (ret < 0)
5664 goto aborted_xfer;
5665 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5666
5667 if (res->to_forward || msg->chunk_len)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5668 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5669
5670 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5671 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5672 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5673 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5674 msg->msg_state = HTTP_MSG_DONE;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5675 if (compressing && consumed_data) {
5676 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5677 compressing = 0;
5678 }
5679 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5680 }
5681 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5682 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5683 * set ->sov and ->next to point to the body and switch to DATA or
5684 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5685 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5686 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5687
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5688 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5689 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5690 else if (ret < 0) {
5691 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5692 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]5693 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5694 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5695 if (compressing) {
5696 if (likely(msg->chunk_len > 0)) {
5697 /* skipping data if we are in compression mode */
5698 b_adv(res->buf, msg->next);
5699 msg->next = 0;
5700 msg->sov = 0;
5701 msg->sol = 0;
5702 } else {
5703 if (consumed_data) {
5704 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5705 compressing = 0;
5706 }
5707 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5708 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5709 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5710 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5711 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5712 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5713 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5714
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5715 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5716 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5717 else if (ret < 0) {
5718 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5719 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]5720 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5721 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5722 /* skipping data in buffer for compression */
5723 if (compressing) {
5724 b_adv(res->buf, msg->next);
5725 msg->next = 0;
5726 msg->sov = 0;
5727 msg->sol = 0;
5728 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5729 /* we're in MSG_CHUNK_SIZE now */
5730 }
5731 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5732 int ret = http_forward_trailers(msg);
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5733
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5734 if (ret == 0)
5735 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5736 else if (ret < 0) {
5737 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5738 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]5739 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5740 }
William Lallemand00bf1de2012-11-22 17:55:14 +0100[diff] [blame]5741 if (s->comp_algo != NULL) {
5742 /* forwarding trailers */
5743 channel_forward(res, msg->next);
5744 msg->next = 0;
5745 }
5746 /* we're in HTTP_MSG_DONE now */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5747 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5748 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5749 int old_state = msg->msg_state;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5750 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5751 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5752 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5753 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5754 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5755 if (http_resync_states(s)) {
5756 http_silent_debug(__LINE__, s);
5757 /* some state changes occurred, maybe the analyser
5758 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5759 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5760 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5761 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5762 /* response errors are most likely due to
5763 * the client aborting the transfer.
5764 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5765 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5766 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5767 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5768 http_capture_bad_message(&s->be->invalid_rep, s, msg, old_state, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5769 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5770 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5771 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5772 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5773 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5774 }
5775 }
5776
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5777 missing_data:
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5778 if (compressing && consumed_data) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5779 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
5780 compressing = 0;
5781 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5782
5783 if (res->flags & CF_SHUTW)
5784 goto aborted_xfer;
5785
5786 /* stop waiting for data if the input is closed before the end. If the
5787 * client side was already closed, it means that the client has aborted,
5788 * so we don't want to count this as a server abort. Otherwise it's a
5789 * server abort.
5790 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5791 if (res->flags & CF_SHUTR) {
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5792 if ((res->flags & CF_SHUTW_NOW) || (s->req->flags & CF_SHUTR))
5793 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5794 if (!(s->flags & SN_ERR_MASK))
5795 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5796 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5797 if (objt_server(s->target))
5798 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5799 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5800 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5801
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5802 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5803 if (!s->req->analysers)
5804 goto return_bad_res;
5805
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5806 /* forward any data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5807 if (s->comp_algo == NULL) {
5808 bytes = msg->sov - msg->sol;
5809 if (msg->chunk_len || bytes) {
5810 msg->sol = msg->sov;
5811 msg->next -= bytes; /* will be forwarded */
5812 msg->chunk_len += bytes;
5813 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5814 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5815 }
5816
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5817 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5818 * 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]5819 * Similarly, with keep-alive on the client side, we don't want to forward a
5820 * close.
5821 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]5822 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5823 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5824 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5825 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5826
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5827 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5828 * 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]5829 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5830 * modes are already handled by the stream sock layer. We must not do
5831 * this in content-length mode because it could present the MSG_MORE
5832 * flag with the last block of forwarded data, which would cause an
5833 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5834 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]5835 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5836 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5837
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5838 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5839 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5840 return 0;
5841
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5842 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5843 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5844 if (objt_server(s->target))
5845 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5846
5847 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5848 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]5849 /* don't send any error message as we're in the body */
5850 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5851 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5852 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]5853 if (objt_server(s->target))
5854 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5855
5856 if (!(s->flags & SN_ERR_MASK))
5857 s->flags |= SN_ERR_PRXCOND;
5858 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5859 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5860 return 0;
5861
5862 aborted_xfer:
5863 txn->rsp.msg_state = HTTP_MSG_ERROR;
5864 /* don't send any error message as we're in the body */
5865 stream_int_retnclose(res->cons, NULL);
5866 res->analysers = 0;
5867 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
5868
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5869 s->fe->fe_counters.cli_aborts++;
5870 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5871 if (objt_server(s->target))
5872 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5873
5874 if (!(s->flags & SN_ERR_MASK))
5875 s->flags |= SN_ERR_CLICL;
5876 if (!(s->flags & SN_FINST_MASK))
5877 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5878 return 0;
5879}
5880
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5881/* Iterate the same filter through all request headers.
5882 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5883 * Since it can manage the switch to another backend, it updates the per-proxy
5884 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5885 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5886int 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]5887{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5888 char term;
5889 char *cur_ptr, *cur_end, *cur_next;
5890 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5891 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5892 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5893 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]5894
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5895 last_hdr = 0;
5896
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5897 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5898 old_idx = 0;
5899
5900 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5901 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5902 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5903 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5904 (exp->action == ACT_ALLOW ||
5905 exp->action == ACT_DENY ||
5906 exp->action == ACT_TARPIT))
5907 return 0;
5908
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5909 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5910 if (!cur_idx)
5911 break;
5912
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5913 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5914 cur_ptr = cur_next;
5915 cur_end = cur_ptr + cur_hdr->len;
5916 cur_next = cur_end + cur_hdr->cr + 1;
5917
5918 /* Now we have one header between cur_ptr and cur_end,
5919 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5920 */
5921
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5922 /* The annoying part is that pattern matching needs
5923 * that we modify the contents to null-terminate all
5924 * strings before testing them.
5925 */
5926
5927 term = *cur_end;
5928 *cur_end = '\0';
5929
5930 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5931 switch (exp->action) {
5932 case ACT_SETBE:
5933 /* It is not possible to jump a second time.
5934 * FIXME: should we return an HTTP/500 here so that
5935 * the admin knows there's a problem ?
5936 */
5937 if (t->be != t->fe)
5938 break;
5939
5940 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]5941 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5942 last_hdr = 1;
5943 break;
5944
5945 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5946 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5947 last_hdr = 1;
5948 break;
5949
5950 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5951 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5952 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5953
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5954 t->fe->fe_counters.denied_req++;
5955 if (t->fe != t->be)
5956 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5957 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5958 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5959
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5960 break;
5961
5962 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5963 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5964 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5965
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5966 t->fe->fe_counters.denied_req++;
5967 if (t->fe != t->be)
5968 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5969 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5970 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5971
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5972 break;
5973
5974 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5975 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
5976 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5977 /* FIXME: if the user adds a newline in the replacement, the
5978 * index will not be recalculated for now, and the new line
5979 * will not be counted as a new header.
5980 */
5981
5982 cur_end += delta;
5983 cur_next += delta;
5984 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5985 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5986 break;
5987
5988 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5989 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5990 cur_next += delta;
5991
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5992 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5993 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
5994 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5995 cur_hdr->len = 0;
5996 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]5997 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5998 break;
5999
6000 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6001 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6002 if (cur_end)
6003 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6004
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6005 /* keep the link from this header to next one in case of later
6006 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6007 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6008 old_idx = cur_idx;
6009 }
6010 return 0;
6011}
6012
6013
6014/* Apply the filter to the request line.
6015 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6016 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6017 * Since it can manage the switch to another backend, it updates the per-proxy
6018 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6019 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6020int 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]6021{
6022 char term;
6023 char *cur_ptr, *cur_end;
6024 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6025 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6026 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6027
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6028 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6029 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6030 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6031 (exp->action == ACT_ALLOW ||
6032 exp->action == ACT_DENY ||
6033 exp->action == ACT_TARPIT))
6034 return 0;
6035 else if (exp->action == ACT_REMOVE)
6036 return 0;
6037
6038 done = 0;
6039
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6040 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6041 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6042
6043 /* Now we have the request line between cur_ptr and cur_end */
6044
6045 /* The annoying part is that pattern matching needs
6046 * that we modify the contents to null-terminate all
6047 * strings before testing them.
6048 */
6049
6050 term = *cur_end;
6051 *cur_end = '\0';
6052
6053 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6054 switch (exp->action) {
6055 case ACT_SETBE:
6056 /* It is not possible to jump a second time.
6057 * FIXME: should we return an HTTP/500 here so that
6058 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6059 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6060 if (t->be != t->fe)
6061 break;
6062
6063 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6064 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6065 done = 1;
6066 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6067
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6068 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6069 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6070 done = 1;
6071 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6072
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6073 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6074 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6075
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6076 t->fe->fe_counters.denied_req++;
6077 if (t->fe != t->be)
6078 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6079 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6080 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6081
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6082 done = 1;
6083 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6084
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6085 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6086 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6087
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6088 t->fe->fe_counters.denied_req++;
6089 if (t->fe != t->be)
6090 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6091 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6092 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6093
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6094 done = 1;
6095 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6096
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6097 case ACT_REPLACE:
6098 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6099 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6100 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6101 /* FIXME: if the user adds a newline in the replacement, the
6102 * index will not be recalculated for now, and the new line
6103 * will not be counted as a new header.
6104 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6105
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6106 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6107 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6108 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6109 HTTP_MSG_RQMETH,
6110 cur_ptr, cur_end + 1,
6111 NULL, NULL);
6112 if (unlikely(!cur_end))
6113 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6114
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6115 /* we have a full request and we know that we have either a CR
6116 * or an LF at <ptr>.
6117 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6118 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6119 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]6120 /* there is no point trying this regex on headers */
6121 return 1;
6122 }
6123 }
6124 *cur_end = term; /* restore the string terminator */
6125 return done;
6126}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6127
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6128
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6129
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6130/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6131 * 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]6132 * 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]6133 * unparsable request. Since it can manage the switch to another backend, it
6134 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6135 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6136int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6137{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6138 struct http_txn *txn = &s->txn;
6139 struct hdr_exp *exp;
6140
6141 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6142 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6143
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6144 /*
6145 * The interleaving of transformations and verdicts
6146 * makes it difficult to decide to continue or stop
6147 * the evaluation.
6148 */
6149
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6150 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6151 break;
6152
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6153 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6154 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6155 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6156 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6157
6158 /* if this filter had a condition, evaluate it now and skip to
6159 * next filter if the condition does not match.
6160 */
6161 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6162 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]6163 ret = acl_pass(ret);
6164 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6165 ret = !ret;
6166
6167 if (!ret)
6168 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6169 }
6170
6171 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6172 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6173 if (unlikely(ret < 0))
6174 return -1;
6175
6176 if (likely(ret == 0)) {
6177 /* The filter did not match the request, it can be
6178 * iterated through all headers.
6179 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6180 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6181 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6182 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6183 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6184}
6185
6186
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6187
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6188/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6189 * Try to retrieve the server associated to the appsession.
6190 * If the server is found, it's assigned to the session.
6191 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6192void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6193 struct http_txn *txn = &t->txn;
6194 appsess *asession = NULL;
6195 char *sessid_temp = NULL;
6196
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6197 if (len > t->be->appsession_len) {
6198 len = t->be->appsession_len;
6199 }
6200
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6201 if (t->be->options2 & PR_O2_AS_REQL) {
6202 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6203 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6204 /* 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]6205 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6206 }
6207
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6208 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6209 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6210 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6211 return;
6212 }
6213
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6214 memcpy(txn->sessid, buf, len);
6215 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6216 }
6217
6218 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6219 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6220 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6221 return;
6222 }
6223
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6224 memcpy(sessid_temp, buf, len);
6225 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6226
6227 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6228 /* free previously allocated memory */
6229 pool_free2(apools.sessid, sessid_temp);
6230
6231 if (asession != NULL) {
6232 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6233 if (!(t->be->options2 & PR_O2_AS_REQL))
6234 asession->request_count++;
6235
6236 if (asession->serverid != NULL) {
6237 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6238
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6239 while (srv) {
6240 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6241 if ((srv->state & SRV_RUNNING) ||
6242 (t->be->options & PR_O_PERSIST) ||
6243 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6244 /* we found the server and it's usable */
6245 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6246 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6247 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6248 t->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6249
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6250 break;
6251 } else {
6252 txn->flags &= ~TX_CK_MASK;
6253 txn->flags |= TX_CK_DOWN;
6254 }
6255 }
6256 srv = srv->next;
6257 }
6258 }
6259 }
6260}
6261
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6262/* Find the end of a cookie value contained between <s> and <e>. It works the
6263 * same way as with headers above except that the semi-colon also ends a token.
6264 * See RFC2965 for more information. Note that it requires a valid header to
6265 * return a valid result.
6266 */
6267char *find_cookie_value_end(char *s, const char *e)
6268{
6269 int quoted, qdpair;
6270
6271 quoted = qdpair = 0;
6272 for (; s < e; s++) {
6273 if (qdpair) qdpair = 0;
6274 else if (quoted) {
6275 if (*s == '\\') qdpair = 1;
6276 else if (*s == '"') quoted = 0;
6277 }
6278 else if (*s == '"') quoted = 1;
6279 else if (*s == ',' || *s == ';') return s;
6280 }
6281 return s;
6282}
6283
6284/* Delete a value in a header between delimiters <from> and <next> in buffer
6285 * <buf>. The number of characters displaced is returned, and the pointer to
6286 * the first delimiter is updated if required. The function tries as much as
6287 * possible to respect the following principles :
6288 * - replace <from> delimiter by the <next> one unless <from> points to a
6289 * colon, in which case <next> is simply removed
6290 * - set exactly one space character after the new first delimiter, unless
6291 * there are not enough characters in the block being moved to do so.
6292 * - remove unneeded spaces before the previous delimiter and after the new
6293 * one.
6294 *
6295 * It is the caller's responsibility to ensure that :
6296 * - <from> points to a valid delimiter or the colon ;
6297 * - <next> points to a valid delimiter or the final CR/LF ;
6298 * - there are non-space chars before <from> ;
6299 * - there is a CR/LF at or after <next>.
6300 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6301int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6302{
6303 char *prev = *from;
6304
6305 if (*prev == ':') {
6306 /* We're removing the first value, preserve the colon and add a
6307 * space if possible.
6308 */
6309 if (!http_is_crlf[(unsigned char)*next])
6310 next++;
6311 prev++;
6312 if (prev < next)
6313 *prev++ = ' ';
6314
6315 while (http_is_spht[(unsigned char)*next])
6316 next++;
6317 } else {
6318 /* Remove useless spaces before the old delimiter. */
6319 while (http_is_spht[(unsigned char)*(prev-1)])
6320 prev--;
6321 *from = prev;
6322
6323 /* copy the delimiter and if possible a space if we're
6324 * not at the end of the line.
6325 */
6326 if (!http_is_crlf[(unsigned char)*next]) {
6327 *prev++ = *next++;
6328 if (prev + 1 < next)
6329 *prev++ = ' ';
6330 while (http_is_spht[(unsigned char)*next])
6331 next++;
6332 }
6333 }
6334 return buffer_replace2(buf, prev, next, NULL, 0);
6335}
6336
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6337/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6338 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6339 * desirable to call it only when needed. This code is quite complex because
6340 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6341 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6342 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6343void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6344{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6345 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6346 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6347 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6348 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6349 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6350
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6351 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6352 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6353 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6354
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6355 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6356 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6357 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6358
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6359 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6360 hdr_beg = hdr_next;
6361 hdr_end = hdr_beg + cur_hdr->len;
6362 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6363
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6364 /* We have one full header between hdr_beg and hdr_end, and the
6365 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6366 * "Cookie:" headers.
6367 */
6368
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6369 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6370 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6371 old_idx = cur_idx;
6372 continue;
6373 }
6374
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6375 del_from = NULL; /* nothing to be deleted */
6376 preserve_hdr = 0; /* assume we may kill the whole header */
6377
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6378 /* Now look for cookies. Conforming to RFC2109, we have to support
6379 * attributes whose name begin with a '$', and associate them with
6380 * the right cookie, if we want to delete this cookie.
6381 * So there are 3 cases for each cookie read :
6382 * 1) it's a special attribute, beginning with a '$' : ignore it.
6383 * 2) it's a server id cookie that we *MAY* want to delete : save
6384 * some pointers on it (last semi-colon, beginning of cookie...)
6385 * 3) it's an application cookie : we *MAY* have to delete a previous
6386 * "special" cookie.
6387 * At the end of loop, if a "special" cookie remains, we may have to
6388 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6389 * *MUST* delete it.
6390 *
6391 * Note: RFC2965 is unclear about the processing of spaces around
6392 * the equal sign in the ATTR=VALUE form. A careful inspection of
6393 * the RFC explicitly allows spaces before it, and not within the
6394 * tokens (attrs or values). An inspection of RFC2109 allows that
6395 * too but section 10.1.3 lets one think that spaces may be allowed
6396 * after the equal sign too, resulting in some (rare) buggy
6397 * implementations trying to do that. So let's do what servers do.
6398 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6399 * allowed quoted strings in values, with any possible character
6400 * after a backslash, including control chars and delimitors, which
6401 * causes parsing to become ambiguous. Browsers also allow spaces
6402 * within values even without quotes.
6403 *
6404 * We have to keep multiple pointers in order to support cookie
6405 * removal at the beginning, middle or end of header without
6406 * corrupting the header. All of these headers are valid :
6407 *
6408 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6409 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6410 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6411 * | | | | | | | | |
6412 * | | | | | | | | hdr_end <--+
6413 * | | | | | | | +--> next
6414 * | | | | | | +----> val_end
6415 * | | | | | +-----------> val_beg
6416 * | | | | +--------------> equal
6417 * | | | +----------------> att_end
6418 * | | +---------------------> att_beg
6419 * | +--------------------------> prev
6420 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6421 */
6422
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6423 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6424 /* Iterate through all cookies on this line */
6425
6426 /* find att_beg */
6427 att_beg = prev + 1;
6428 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6429 att_beg++;
6430
6431 /* find att_end : this is the first character after the last non
6432 * space before the equal. It may be equal to hdr_end.
6433 */
6434 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6435
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6436 while (equal < hdr_end) {
6437 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6438 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6439 if (http_is_spht[(unsigned char)*equal++])
6440 continue;
6441 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6442 }
6443
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6444 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6445 * is between <att_beg> and <equal>, both may be identical.
6446 */
6447
6448 /* look for end of cookie if there is an equal sign */
6449 if (equal < hdr_end && *equal == '=') {
6450 /* look for the beginning of the value */
6451 val_beg = equal + 1;
6452 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6453 val_beg++;
6454
6455 /* find the end of the value, respecting quotes */
6456 next = find_cookie_value_end(val_beg, hdr_end);
6457
6458 /* make val_end point to the first white space or delimitor after the value */
6459 val_end = next;
6460 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6461 val_end--;
6462 } else {
6463 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6464 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6465
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6466 /* We have nothing to do with attributes beginning with '$'. However,
6467 * they will automatically be removed if a header before them is removed,
6468 * since they're supposed to be linked together.
6469 */
6470 if (*att_beg == '$')
6471 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6472
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6473 /* Ignore cookies with no equal sign */
6474 if (equal == next) {
6475 /* This is not our cookie, so we must preserve it. But if we already
6476 * scheduled another cookie for removal, we cannot remove the
6477 * complete header, but we can remove the previous block itself.
6478 */
6479 preserve_hdr = 1;
6480 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6481 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6482 val_end += delta;
6483 next += delta;
6484 hdr_end += delta;
6485 hdr_next += delta;
6486 cur_hdr->len += delta;
6487 http_msg_move_end(&txn->req, delta);
6488 prev = del_from;
6489 del_from = NULL;
6490 }
6491 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6492 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6493
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6494 /* if there are spaces around the equal sign, we need to
6495 * strip them otherwise we'll get trouble for cookie captures,
6496 * or even for rewrites. Since this happens extremely rarely,
6497 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6498 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6499 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6500 int stripped_before = 0;
6501 int stripped_after = 0;
6502
6503 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6504 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6505 equal += stripped_before;
6506 val_beg += stripped_before;
6507 }
6508
6509 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6510 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6511 val_beg += stripped_after;
6512 stripped_before += stripped_after;
6513 }
6514
6515 val_end += stripped_before;
6516 next += stripped_before;
6517 hdr_end += stripped_before;
6518 hdr_next += stripped_before;
6519 cur_hdr->len += stripped_before;
6520 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6521 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6522 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6523
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6524 /* First, let's see if we want to capture this cookie. We check
6525 * that we don't already have a client side cookie, because we
6526 * can only capture one. Also as an optimisation, we ignore
6527 * cookies shorter than the declared name.
6528 */
6529 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6530 (val_end - att_beg >= t->fe->capture_namelen) &&
6531 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6532 int log_len = val_end - att_beg;
6533
6534 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6535 Alert("HTTP logging : out of memory.\n");
6536 } else {
6537 if (log_len > t->fe->capture_len)
6538 log_len = t->fe->capture_len;
6539 memcpy(txn->cli_cookie, att_beg, log_len);
6540 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6541 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6542 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6543
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6544 /* Persistence cookies in passive, rewrite or insert mode have the
6545 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6546 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6547 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6548 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6549 * For cookies in prefix mode, the form is :
6550 *
6551 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6552 */
6553 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6554 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6555 struct server *srv = t->be->srv;
6556 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6557
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6558 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6559 * have the server ID between val_beg and delim, and the original cookie between
6560 * delim+1 and val_end. Otherwise, delim==val_end :
6561 *
6562 * Cookie: NAME=SRV; # in all but prefix modes
6563 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6564 * | || || | |+-> next
6565 * | || || | +--> val_end
6566 * | || || +---------> delim
6567 * | || |+------------> val_beg
6568 * | || +-------------> att_end = equal
6569 * | |+-----------------> att_beg
6570 * | +------------------> prev
6571 * +-------------------------> hdr_beg
6572 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6573
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6574 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6575 for (delim = val_beg; delim < val_end; delim++)
6576 if (*delim == COOKIE_DELIM)
6577 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6578 } else {
6579 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6580 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6581 /* Now check if the cookie contains a date field, which would
6582 * appear after a vertical bar ('|') just after the server name
6583 * and before the delimiter.
6584 */
6585 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6586 if (vbar1) {
6587 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6588 * right is the last seen date. It is a base64 encoded
6589 * 30-bit value representing the UNIX date since the
6590 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6591 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6592 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6593 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6594 if (val_end - vbar1 >= 5) {
6595 val = b64tos30(vbar1);
6596 if (val > 0)
6597 txn->cookie_last_date = val << 2;
6598 }
6599 /* look for a second vertical bar */
6600 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6601 if (vbar1 && (val_end - vbar1 > 5)) {
6602 val = b64tos30(vbar1 + 1);
6603 if (val > 0)
6604 txn->cookie_first_date = val << 2;
6605 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6606 }
6607 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6608
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6609 /* if the cookie has an expiration date and the proxy wants to check
6610 * it, then we do that now. We first check if the cookie is too old,
6611 * then only if it has expired. We detect strict overflow because the
6612 * time resolution here is not great (4 seconds). Cookies with dates
6613 * in the future are ignored if their offset is beyond one day. This
6614 * allows an admin to fix timezone issues without expiring everyone
6615 * and at the same time avoids keeping unwanted side effects for too
6616 * long.
6617 */
6618 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6619 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6620 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6621 txn->flags &= ~TX_CK_MASK;
6622 txn->flags |= TX_CK_OLD;
6623 delim = val_beg; // let's pretend we have not found the cookie
6624 txn->cookie_first_date = 0;
6625 txn->cookie_last_date = 0;
6626 }
6627 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6628 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6629 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6630 txn->flags &= ~TX_CK_MASK;
6631 txn->flags |= TX_CK_EXPIRED;
6632 delim = val_beg; // let's pretend we have not found the cookie
6633 txn->cookie_first_date = 0;
6634 txn->cookie_last_date = 0;
6635 }
6636
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6637 /* Here, we'll look for the first running server which supports the cookie.
6638 * This allows to share a same cookie between several servers, for example
6639 * to dedicate backup servers to specific servers only.
6640 * However, to prevent clients from sticking to cookie-less backup server
6641 * when they have incidentely learned an empty cookie, we simply ignore
6642 * empty cookies and mark them as invalid.
6643 * The same behaviour is applied when persistence must be ignored.
6644 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6645 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6646 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6647
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6648 while (srv) {
6649 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6650 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6651 if ((srv->state & SRV_RUNNING) ||
6652 (t->be->options & PR_O_PERSIST) ||
6653 (t->flags & SN_FORCE_PRST)) {
6654 /* we found the server and we can use it */
6655 txn->flags &= ~TX_CK_MASK;
6656 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6657 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6658 t->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6659 break;
6660 } else {
6661 /* we found a server, but it's down,
6662 * mark it as such and go on in case
6663 * another one is available.
6664 */
6665 txn->flags &= ~TX_CK_MASK;
6666 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6667 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6668 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6669 srv = srv->next;
6670 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6671
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6672 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6673 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6674 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6675 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6676 txn->flags |= TX_CK_UNUSED;
6677 else
6678 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6679 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6680
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6681 /* depending on the cookie mode, we may have to either :
6682 * - delete the complete cookie if we're in insert+indirect mode, so that
6683 * the server never sees it ;
6684 * - remove the server id from the cookie value, and tag the cookie as an
6685 * application cookie so that it does not get accidentely removed later,
6686 * if we're in cookie prefix mode
6687 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6688 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6689 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6690
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6691 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6692 val_end += delta;
6693 next += delta;
6694 hdr_end += delta;
6695 hdr_next += delta;
6696 cur_hdr->len += delta;
6697 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6698
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6699 del_from = NULL;
6700 preserve_hdr = 1; /* we want to keep this cookie */
6701 }
6702 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6703 (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]6704 del_from = prev;
6705 }
6706 } else {
6707 /* This is not our cookie, so we must preserve it. But if we already
6708 * scheduled another cookie for removal, we cannot remove the
6709 * complete header, but we can remove the previous block itself.
6710 */
6711 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6712
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6713 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6714 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]6715 if (att_beg >= del_from)
6716 att_beg += delta;
6717 if (att_end >= del_from)
6718 att_end += delta;
6719 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6720 val_end += delta;
6721 next += delta;
6722 hdr_end += delta;
6723 hdr_next += delta;
6724 cur_hdr->len += delta;
6725 http_msg_move_end(&txn->req, delta);
6726 prev = del_from;
6727 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6728 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6729 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6730
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6731 /* Look for the appsession cookie unless persistence must be ignored */
6732 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
6733 int cmp_len, value_len;
6734 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]6735
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6736 if (t->be->options2 & PR_O2_AS_PFX) {
6737 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6738 value_begin = att_beg + t->be->appsession_name_len;
6739 value_len = val_end - att_beg - t->be->appsession_name_len;
6740 } else {
6741 cmp_len = att_end - att_beg;
6742 value_begin = val_beg;
6743 value_len = val_end - val_beg;
6744 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6745
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6746 /* let's see if the cookie is our appcookie */
6747 if (cmp_len == t->be->appsession_name_len &&
6748 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
6749 manage_client_side_appsession(t, value_begin, value_len);
6750 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6751 }
6752
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6753 /* continue with next cookie on this header line */
6754 att_beg = next;
6755 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6756
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6757 /* There are no more cookies on this line.
6758 * We may still have one (or several) marked for deletion at the
6759 * end of the line. We must do this now in two ways :
6760 * - if some cookies must be preserved, we only delete from the
6761 * mark to the end of line ;
6762 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6763 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6764 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6765 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6766 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6767 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6768 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6769 cur_hdr->len += delta;
6770 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6771 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6772
6773 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6774 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6775 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6776 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6777 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6778 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6779 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6780 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6781 }
6782
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6783 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6784 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6785 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6786}
6787
6788
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6789/* Iterate the same filter through all response headers contained in <rtr>.
6790 * Returns 1 if this filter can be stopped upon return, otherwise 0.
6791 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6792int 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]6793{
6794 char term;
6795 char *cur_ptr, *cur_end, *cur_next;
6796 int cur_idx, old_idx, last_hdr;
6797 struct http_txn *txn = &t->txn;
6798 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6799 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6800
6801 last_hdr = 0;
6802
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6803 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6804 old_idx = 0;
6805
6806 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6807 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6808 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6809 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6810 (exp->action == ACT_ALLOW ||
6811 exp->action == ACT_DENY))
6812 return 0;
6813
6814 cur_idx = txn->hdr_idx.v[old_idx].next;
6815 if (!cur_idx)
6816 break;
6817
6818 cur_hdr = &txn->hdr_idx.v[cur_idx];
6819 cur_ptr = cur_next;
6820 cur_end = cur_ptr + cur_hdr->len;
6821 cur_next = cur_end + cur_hdr->cr + 1;
6822
6823 /* Now we have one header between cur_ptr and cur_end,
6824 * and the next header starts at cur_next.
6825 */
6826
6827 /* The annoying part is that pattern matching needs
6828 * that we modify the contents to null-terminate all
6829 * strings before testing them.
6830 */
6831
6832 term = *cur_end;
6833 *cur_end = '\0';
6834
6835 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6836 switch (exp->action) {
6837 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6838 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6839 last_hdr = 1;
6840 break;
6841
6842 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6843 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6844 last_hdr = 1;
6845 break;
6846
6847 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6848 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6849 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6850 /* FIXME: if the user adds a newline in the replacement, the
6851 * index will not be recalculated for now, and the new line
6852 * will not be counted as a new header.
6853 */
6854
6855 cur_end += delta;
6856 cur_next += delta;
6857 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6858 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6859 break;
6860
6861 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6862 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6863 cur_next += delta;
6864
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6865 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6866 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6867 txn->hdr_idx.used--;
6868 cur_hdr->len = 0;
6869 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6870 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6871 break;
6872
6873 }
6874 }
6875 if (cur_end)
6876 *cur_end = term; /* restore the string terminator */
6877
6878 /* keep the link from this header to next one in case of later
6879 * removal of next header.
6880 */
6881 old_idx = cur_idx;
6882 }
6883 return 0;
6884}
6885
6886
6887/* Apply the filter to the status line in the response buffer <rtr>.
6888 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6889 * or -1 if a replacement resulted in an invalid status line.
6890 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6891int 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]6892{
6893 char term;
6894 char *cur_ptr, *cur_end;
6895 int done;
6896 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6897 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6898
6899
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6900 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6901 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6902 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6903 (exp->action == ACT_ALLOW ||
6904 exp->action == ACT_DENY))
6905 return 0;
6906 else if (exp->action == ACT_REMOVE)
6907 return 0;
6908
6909 done = 0;
6910
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6911 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]6912 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6913
6914 /* Now we have the status line between cur_ptr and cur_end */
6915
6916 /* The annoying part is that pattern matching needs
6917 * that we modify the contents to null-terminate all
6918 * strings before testing them.
6919 */
6920
6921 term = *cur_end;
6922 *cur_end = '\0';
6923
6924 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6925 switch (exp->action) {
6926 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6927 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6928 done = 1;
6929 break;
6930
6931 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6932 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6933 done = 1;
6934 break;
6935
6936 case ACT_REPLACE:
6937 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6938 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6939 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6940 /* FIXME: if the user adds a newline in the replacement, the
6941 * index will not be recalculated for now, and the new line
6942 * will not be counted as a new header.
6943 */
6944
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6945 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6946 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6947 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]6948 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6949 cur_ptr, cur_end + 1,
6950 NULL, NULL);
6951 if (unlikely(!cur_end))
6952 return -1;
6953
6954 /* we have a full respnse and we know that we have either a CR
6955 * or an LF at <ptr>.
6956 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6957 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]6958 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]6959 /* there is no point trying this regex on headers */
6960 return 1;
6961 }
6962 }
6963 *cur_end = term; /* restore the string terminator */
6964 return done;
6965}
6966
6967
6968
6969/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6970 * 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]6971 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
6972 * unparsable response.
6973 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6974int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6975{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6976 struct http_txn *txn = &s->txn;
6977 struct hdr_exp *exp;
6978
6979 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6980 int ret;
6981
6982 /*
6983 * The interleaving of transformations and verdicts
6984 * makes it difficult to decide to continue or stop
6985 * the evaluation.
6986 */
6987
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6988 if (txn->flags & TX_SVDENY)
6989 break;
6990
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6991 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6992 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
6993 exp->action == ACT_PASS)) {
6994 exp = exp->next;
6995 continue;
6996 }
6997
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6998 /* if this filter had a condition, evaluate it now and skip to
6999 * next filter if the condition does not match.
7000 */
7001 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7002 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]7003 ret = acl_pass(ret);
7004 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7005 ret = !ret;
7006 if (!ret)
7007 continue;
7008 }
7009
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7010 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7011 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7012 if (unlikely(ret < 0))
7013 return -1;
7014
7015 if (likely(ret == 0)) {
7016 /* The filter did not match the response, it can be
7017 * iterated through all headers.
7018 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7019 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7020 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7021 }
7022 return 0;
7023}
7024
7025
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7026/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7027 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7028 * desirable to call it only when needed. This function is also used when we
7029 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7030 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7031void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7032{
7033 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7034 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7035 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7036 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7037 char *hdr_beg, *hdr_end, *hdr_next;
7038 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7039
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7040 /* Iterate through the headers.
7041 * we start with the start line.
7042 */
7043 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7044 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7045
7046 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7047 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7048 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7049
7050 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7051 hdr_beg = hdr_next;
7052 hdr_end = hdr_beg + cur_hdr->len;
7053 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7054
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7055 /* We have one full header between hdr_beg and hdr_end, and the
7056 * next header starts at hdr_next. We're only interested in
7057 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7058 */
7059
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7060 is_cookie2 = 0;
7061 prev = hdr_beg + 10;
7062 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7063 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7064 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7065 if (!val) {
7066 old_idx = cur_idx;
7067 continue;
7068 }
7069 is_cookie2 = 1;
7070 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7071 }
7072
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7073 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7074 * <prev> points to the colon.
7075 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7076 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7077
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7078 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7079 * check-cache is enabled) and we are not interested in checking
7080 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7081 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7082 if (t->be->cookie_name == NULL &&
7083 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7084 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7085 return;
7086
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7087 /* OK so now we know we have to process this response cookie.
7088 * The format of the Set-Cookie header is slightly different
7089 * from the format of the Cookie header in that it does not
7090 * support the comma as a cookie delimiter (thus the header
7091 * cannot be folded) because the Expires attribute described in
7092 * the original Netscape's spec may contain an unquoted date
7093 * with a comma inside. We have to live with this because
7094 * many browsers don't support Max-Age and some browsers don't
7095 * support quoted strings. However the Set-Cookie2 header is
7096 * clean.
7097 *
7098 * We have to keep multiple pointers in order to support cookie
7099 * removal at the beginning, middle or end of header without
7100 * corrupting the header (in case of set-cookie2). A special
7101 * pointer, <scav> points to the beginning of the set-cookie-av
7102 * fields after the first semi-colon. The <next> pointer points
7103 * either to the end of line (set-cookie) or next unquoted comma
7104 * (set-cookie2). All of these headers are valid :
7105 *
7106 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7107 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7108 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7109 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7110 * | | | | | | | | | |
7111 * | | | | | | | | +-> next hdr_end <--+
7112 * | | | | | | | +------------> scav
7113 * | | | | | | +--------------> val_end
7114 * | | | | | +--------------------> val_beg
7115 * | | | | +----------------------> equal
7116 * | | | +------------------------> att_end
7117 * | | +----------------------------> att_beg
7118 * | +------------------------------> prev
7119 * +-----------------------------------------> hdr_beg
7120 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7121
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7122 for (; prev < hdr_end; prev = next) {
7123 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7124
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7125 /* find att_beg */
7126 att_beg = prev + 1;
7127 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7128 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7129
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7130 /* find att_end : this is the first character after the last non
7131 * space before the equal. It may be equal to hdr_end.
7132 */
7133 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7134
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7135 while (equal < hdr_end) {
7136 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7137 break;
7138 if (http_is_spht[(unsigned char)*equal++])
7139 continue;
7140 att_end = equal;
7141 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7142
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7143 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7144 * is between <att_beg> and <equal>, both may be identical.
7145 */
7146
7147 /* look for end of cookie if there is an equal sign */
7148 if (equal < hdr_end && *equal == '=') {
7149 /* look for the beginning of the value */
7150 val_beg = equal + 1;
7151 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7152 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7153
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7154 /* find the end of the value, respecting quotes */
7155 next = find_cookie_value_end(val_beg, hdr_end);
7156
7157 /* make val_end point to the first white space or delimitor after the value */
7158 val_end = next;
7159 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7160 val_end--;
7161 } else {
7162 /* <equal> points to next comma, semi-colon or EOL */
7163 val_beg = val_end = next = equal;
7164 }
7165
7166 if (next < hdr_end) {
7167 /* Set-Cookie2 supports multiple cookies, and <next> points to
7168 * a colon or semi-colon before the end. So skip all attr-value
7169 * pairs and look for the next comma. For Set-Cookie, since
7170 * commas are permitted in values, skip to the end.
7171 */
7172 if (is_cookie2)
7173 next = find_hdr_value_end(next, hdr_end);
7174 else
7175 next = hdr_end;
7176 }
7177
7178 /* Now everything is as on the diagram above */
7179
7180 /* Ignore cookies with no equal sign */
7181 if (equal == val_end)
7182 continue;
7183
7184 /* If there are spaces around the equal sign, we need to
7185 * strip them otherwise we'll get trouble for cookie captures,
7186 * or even for rewrites. Since this happens extremely rarely,
7187 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7188 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7189 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7190 int stripped_before = 0;
7191 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7192
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7193 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7194 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7195 equal += stripped_before;
7196 val_beg += stripped_before;
7197 }
7198
7199 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7200 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7201 val_beg += stripped_after;
7202 stripped_before += stripped_after;
7203 }
7204
7205 val_end += stripped_before;
7206 next += stripped_before;
7207 hdr_end += stripped_before;
7208 hdr_next += stripped_before;
7209 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7210 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7211 }
7212
7213 /* First, let's see if we want to capture this cookie. We check
7214 * that we don't already have a server side cookie, because we
7215 * can only capture one. Also as an optimisation, we ignore
7216 * cookies shorter than the declared name.
7217 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7218 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7219 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7220 (val_end - att_beg >= t->fe->capture_namelen) &&
7221 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7222 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7223 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7224 Alert("HTTP logging : out of memory.\n");
7225 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7226 else {
7227 if (log_len > t->fe->capture_len)
7228 log_len = t->fe->capture_len;
7229 memcpy(txn->srv_cookie, att_beg, log_len);
7230 txn->srv_cookie[log_len] = 0;
7231 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7232 }
7233
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7234 srv = objt_server(t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7235 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7236 if (!(t->flags & SN_IGNORE_PRST) &&
7237 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7238 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7239 /* assume passive cookie by default */
7240 txn->flags &= ~TX_SCK_MASK;
7241 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7242
7243 /* If the cookie is in insert mode on a known server, we'll delete
7244 * this occurrence because we'll insert another one later.
7245 * 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]7246 * a direct access.
7247 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7248 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7249 /* The "preserve" flag was set, we don't want to touch the
7250 * server's cookie.
7251 */
7252 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7253 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7254 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7255 /* this cookie must be deleted */
7256 if (*prev == ':' && next == hdr_end) {
7257 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7258 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7259 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7260 txn->hdr_idx.used--;
7261 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7262 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7263 hdr_next += delta;
7264 http_msg_move_end(&txn->rsp, delta);
7265 /* note: while both invalid now, <next> and <hdr_end>
7266 * are still equal, so the for() will stop as expected.
7267 */
7268 } else {
7269 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7270 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7271 next = prev;
7272 hdr_end += delta;
7273 hdr_next += delta;
7274 cur_hdr->len += delta;
7275 http_msg_move_end(&txn->rsp, delta);
7276 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7277 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7278 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7279 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7280 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7281 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7282 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7283 * with this server since we know it.
7284 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7285 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7286 next += delta;
7287 hdr_end += delta;
7288 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7289 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7290 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7291
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7292 txn->flags &= ~TX_SCK_MASK;
7293 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7294 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7295 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7296 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7297 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7298 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7299 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7300 next += delta;
7301 hdr_end += delta;
7302 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7303 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7304 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7305
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7306 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7307 txn->flags &= ~TX_SCK_MASK;
7308 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7309 }
7310 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7311 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7312 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7313 int cmp_len, value_len;
7314 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7315
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7316 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7317 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7318 value_begin = att_beg + t->be->appsession_name_len;
7319 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]7320 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7321 cmp_len = att_end - att_beg;
7322 value_begin = val_beg;
7323 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7324 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7325
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7326 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7327 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7328 /* free a possibly previously allocated memory */
7329 pool_free2(apools.sessid, txn->sessid);
7330
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7331 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7332 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7333 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7334 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7335 return;
7336 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7337 memcpy(txn->sessid, value_begin, value_len);
7338 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7339 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7340 }
7341 /* that's done for this cookie, check the next one on the same
7342 * line when next != hdr_end (only if is_cookie2).
7343 */
7344 }
7345 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7346 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7347 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7348
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7349 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7350 appsess *asession = NULL;
7351 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7352 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7353 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7354 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7355 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7356 Alert("Not enough Memory process_srv():asession:calloc().\n");
7357 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7358 return;
7359 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7360 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7361
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7362 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7363 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7364 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]7365 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7366 return;
7367 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7368 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7369 asession->sessid[t->be->appsession_len] = 0;
7370
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7371 server_id_len = strlen(objt_server(t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7372 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7373 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7374 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]7375 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7376 return;
7377 }
7378 asession->serverid[0] = '\0';
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7379 memcpy(asession->serverid, objt_server(t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7380
7381 asession->request_count = 0;
7382 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7383 }
7384
7385 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7386 asession->request_count++;
7387 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7388}
7389
7390
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7391/*
7392 * Check if response is cacheable or not. Updates t->flags.
7393 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7394void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7395{
7396 struct http_txn *txn = &t->txn;
7397 char *p1, *p2;
7398
7399 char *cur_ptr, *cur_end, *cur_next;
7400 int cur_idx;
7401
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7402 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7403 return;
7404
7405 /* Iterate through the headers.
7406 * we start with the start line.
7407 */
7408 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7409 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7410
7411 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7412 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7413 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7414
7415 cur_hdr = &txn->hdr_idx.v[cur_idx];
7416 cur_ptr = cur_next;
7417 cur_end = cur_ptr + cur_hdr->len;
7418 cur_next = cur_end + cur_hdr->cr + 1;
7419
7420 /* We have one full header between cur_ptr and cur_end, and the
7421 * next header starts at cur_next. We're only interested in
7422 * "Cookie:" headers.
7423 */
7424
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7425 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7426 if (val) {
7427 if ((cur_end - (cur_ptr + val) >= 8) &&
7428 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7429 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7430 return;
7431 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7432 }
7433
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7434 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7435 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7436 continue;
7437
7438 /* OK, right now we know we have a cache-control header at cur_ptr */
7439
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7440 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7441
7442 if (p1 >= cur_end) /* no more info */
7443 continue;
7444
7445 /* p1 is at the beginning of the value */
7446 p2 = p1;
7447
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7448 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7449 p2++;
7450
7451 /* we have a complete value between p1 and p2 */
7452 if (p2 < cur_end && *p2 == '=') {
7453 /* we have something of the form no-cache="set-cookie" */
7454 if ((cur_end - p1 >= 21) &&
7455 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7456 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7457 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7458 continue;
7459 }
7460
7461 /* OK, so we know that either p2 points to the end of string or to a comma */
7462 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
7463 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7464 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7465 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7466 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7467 return;
7468 }
7469
7470 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7471 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7472 continue;
7473 }
7474 }
7475}
7476
7477
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7478/*
7479 * Try to retrieve a known appsession in the URI, then the associated server.
7480 * If the server is found, it's assigned to the session.
7481 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7482void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7483{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7484 char *end_params, *first_param, *cur_param, *next_param;
7485 char separator;
7486 int value_len;
7487
7488 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7489
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7490 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7491 (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]7492 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7493 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7494
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7495 first_param = NULL;
7496 switch (mode) {
7497 case PR_O2_AS_M_PP:
7498 first_param = memchr(begin, ';', len);
7499 break;
7500 case PR_O2_AS_M_QS:
7501 first_param = memchr(begin, '?', len);
7502 break;
7503 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7504
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7505 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7506 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7507 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7508
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7509 switch (mode) {
7510 case PR_O2_AS_M_PP:
7511 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7512 end_params = (char *) begin + len;
7513 }
7514 separator = ';';
7515 break;
7516 case PR_O2_AS_M_QS:
7517 end_params = (char *) begin + len;
7518 separator = '&';
7519 break;
7520 default:
7521 /* unknown mode, shouldn't happen */
7522 return;
7523 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7524
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7525 cur_param = next_param = end_params;
7526 while (cur_param > first_param) {
7527 cur_param--;
7528 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7529 /* let's see if this is the appsession parameter */
7530 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7531 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7532 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7533 /* Cool... it's the right one */
7534 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7535 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7536 if (value_len > 0) {
7537 manage_client_side_appsession(t, cur_param, value_len);
7538 }
7539 break;
7540 }
7541 next_param = cur_param;
7542 }
7543 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7544#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7545 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7546 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7547#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7548}
7549
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7550/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7551 * 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]7552 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7553 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7554 * 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]7555 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7556 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7557 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7558 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7559int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7560{
7561 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7562 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7563 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7564 const char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7565
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7566 if (!uri_auth)
7567 return 0;
7568
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7569 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]7570 return 0;
7571
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7572 memset(&si->applet.ctx.stats, 0, sizeof(si->applet.ctx.stats));
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7573 si->applet.ctx.stats.st_code = STAT_STATUS_INIT;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7574
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7575 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7576 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7577 return 0;
7578
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7579 h = uri;
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]7580 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7581 return 0;
7582
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7583 h += uri_auth->uri_len;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7584 while (h <= uri + msg->sl.rq.u_l - 3) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7585 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7586 si->applet.ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7587 break;
7588 }
7589 h++;
7590 }
7591
7592 if (uri_auth->refresh) {
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7593 h = uri + uri_auth->uri_len;
7594 while (h <= uri + msg->sl.rq.u_l - 10) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7595 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7596 si->applet.ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7597 break;
7598 }
7599 h++;
7600 }
7601 }
7602
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7603 h = uri + uri_auth->uri_len;
7604 while (h <= uri + msg->sl.rq.u_l - 4) {
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7605 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7606 si->applet.ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7607 break;
7608 }
7609 h++;
7610 }
7611
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7612 h = uri + uri_auth->uri_len;
7613 while (h <= uri + msg->sl.rq.u_l - 8) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7614 if (memcmp(h, ";st=", 4) == 0) {
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7615 int i;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7616 h += 4;
Cyril Bonté20a804a2012-05-10 19:42:52 +0200[diff] [blame]7617 si->applet.ctx.stats.st_code = STAT_STATUS_UNKN;
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7618 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
7619 if (strncmp(stat_status_codes[i], h, 4) == 0) {
7620 si->applet.ctx.stats.st_code = i;
7621 break;
7622 }
7623 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7624 break;
7625 }
7626 h++;
7627 }
7628
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7629 si->applet.ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7630
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7631 return 1;
7632}
7633
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7634/*
7635 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7636 * By default it tries to report the error position as msg->err_pos. However if
7637 * this one is not set, it will then report msg->next, which is the last known
7638 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7639 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7640 */
7641void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7642 struct http_msg *msg,
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7643 int state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7644{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7645 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7646 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7647
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7648 es->len = MIN(chn->buf->i, sizeof(es->buf));
7649 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7650 len1 = MIN(len1, es->len);
7651 len2 = es->len - len1; /* remaining data if buffer wraps */
7652
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7653 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7654 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7655 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7656
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7657 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7658 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7659 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7660 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7661
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7662 es->when = date; // user-visible date
7663 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7664 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7665 es->oe = other_end;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]7666 es->src = s->req->prod->conn->addr.from;
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7667 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7668 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7669 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7670 es->s_flags = s->flags;
7671 es->t_flags = s->txn.flags;
7672 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7673 es->b_out = chn->buf->o;
7674 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7675 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7676 es->m_clen = msg->chunk_len;
7677 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7678}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7679
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7680/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7681 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7682 * performed over the whole headers. Otherwise it must contain a valid header
7683 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7684 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7685 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7686 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
7687 * -1.
7688 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7689 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7690unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7691 struct hdr_idx *idx, int occ,
7692 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7693{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7694 struct hdr_ctx local_ctx;
7695 char *ptr_hist[MAX_HDR_HISTORY];
7696 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7697 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7698 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7699
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7700 if (!ctx) {
7701 local_ctx.idx = 0;
7702 ctx = &local_ctx;
7703 }
7704
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7705 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7706 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7707 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7708 occ--;
7709 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7710 *vptr = ctx->line + ctx->val;
7711 *vlen = ctx->vlen;
7712 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7713 }
7714 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7715 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7716 }
7717
7718 /* negative occurrence, we scan all the list then walk back */
7719 if (-occ > MAX_HDR_HISTORY)
7720 return 0;
7721
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7722 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7723 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7724 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7725 len_hist[hist_ptr] = ctx->vlen;
7726 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7727 hist_ptr = 0;
7728 found++;
7729 }
7730 if (-occ > found)
7731 return 0;
7732 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
7733 * find occurrence -occ, so we have to check [hist_ptr+occ].
7734 */
7735 hist_ptr += occ;
7736 if (hist_ptr >= MAX_HDR_HISTORY)
7737 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7738 *vptr = ptr_hist[hist_ptr];
7739 *vlen = len_hist[hist_ptr];
7740 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7741}
7742
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]7743/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7744 * Print a debug line with a header. Always stop at the first CR or LF char,
7745 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
7746 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7747 */
7748void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
7749{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7750 int max;
7751 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]7752 dir, (unsigned short)t->req->prod->conn->t.sock.fd,
7753 (unsigned short)t->req->cons->conn->t.sock.fd);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7754
7755 for (max = 0; start + max < end; max++)
7756 if (start[max] == '\r' || start[max] == '\n')
7757 break;
7758
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7759 UBOUND(max, trash.size - trash.len - 3);
7760 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
7761 trash.str[trash.len++] = '\n';
7762 if (write(1, trash.str, trash.len) < 0) /* shut gcc warning */;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7763}
7764
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7765/*
7766 * Initialize a new HTTP transaction for session <s>. It is assumed that all
7767 * the required fields are properly allocated and that we only need to (re)init
7768 * them. This should be used before processing any new request.
7769 */
7770void http_init_txn(struct session *s)
7771{
7772 struct http_txn *txn = &s->txn;
7773 struct proxy *fe = s->fe;
7774
7775 txn->flags = 0;
7776 txn->status = -1;
7777
William Lallemand5f232402012-04-05 18:02:55 +0200[diff] [blame]7778 global.req_count++;
7779
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7780 txn->cookie_first_date = 0;
7781 txn->cookie_last_date = 0;
7782
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7783 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7784 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7785 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7786 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7787 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7788 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]7789 txn->req.chunk_len = 0LL;
7790 txn->req.body_len = 0LL;
7791 txn->rsp.chunk_len = 0LL;
7792 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7793 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
7794 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]7795 txn->req.chn = s->req;
7796 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7797
7798 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7799
7800 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
7801 if (fe->options2 & PR_O2_REQBUG_OK)
7802 txn->req.err_pos = -1; /* let buggy requests pass */
7803
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7804 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7805 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
7806
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7807 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7808 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
7809
7810 if (txn->hdr_idx.v)
7811 hdr_idx_init(&txn->hdr_idx);
7812}
7813
7814/* to be used at the end of a transaction */
7815void http_end_txn(struct session *s)
7816{
7817 struct http_txn *txn = &s->txn;
7818
7819 /* these ones will have been dynamically allocated */
7820 pool_free2(pool2_requri, txn->uri);
7821 pool_free2(pool2_capture, txn->cli_cookie);
7822 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7823 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7824 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7825
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7826 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7827 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7828 txn->uri = NULL;
7829 txn->srv_cookie = NULL;
7830 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7831
7832 if (txn->req.cap) {
7833 struct cap_hdr *h;
7834 for (h = s->fe->req_cap; h; h = h->next)
7835 pool_free2(h->pool, txn->req.cap[h->index]);
7836 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
7837 }
7838
7839 if (txn->rsp.cap) {
7840 struct cap_hdr *h;
7841 for (h = s->fe->rsp_cap; h; h = h->next)
7842 pool_free2(h->pool, txn->rsp.cap[h->index]);
7843 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
7844 }
7845
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7846}
7847
7848/* to be used at the end of a transaction to prepare a new one */
7849void http_reset_txn(struct session *s)
7850{
7851 http_end_txn(s);
7852 http_init_txn(s);
7853
7854 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7855 s->logs.logwait = s->fe->to_log;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]7856 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7857 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]7858 /* re-init store persistence */
7859 s->store_count = 0;
7860
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7861 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7862
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7863 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7864
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7865 /* We must trim any excess data from the response buffer, because we
7866 * may have blocked an invalid response from a server that we don't
7867 * want to accidentely forward once we disable the analysers, nor do
7868 * we want those data to come along with next response. A typical
7869 * example of such data would be from a buggy server responding to
7870 * a HEAD with some data, or sending more than the advertised
7871 * content-length.
7872 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7873 if (unlikely(s->rep->buf->i))
7874 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7875
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7876 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7877 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7878
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7879 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7880 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7881
7882 s->req->rex = TICK_ETERNITY;
7883 s->req->wex = TICK_ETERNITY;
7884 s->req->analyse_exp = TICK_ETERNITY;
7885 s->rep->rex = TICK_ETERNITY;
7886 s->rep->wex = TICK_ETERNITY;
7887 s->rep->analyse_exp = TICK_ETERNITY;
7888}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7889
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7890void free_http_req_rules(struct list *r) {
7891 struct http_req_rule *tr, *pr;
7892
7893 list_for_each_entry_safe(pr, tr, r, list) {
7894 LIST_DEL(&pr->list);
7895 if (pr->action == HTTP_REQ_ACT_HTTP_AUTH)
7896 free(pr->http_auth.realm);
7897
7898 free(pr);
7899 }
7900}
7901
7902struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
7903{
7904 struct http_req_rule *rule;
7905 int cur_arg;
7906
7907 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
7908 if (!rule) {
7909 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
7910 return NULL;
7911 }
7912
7913 if (!*args[0]) {
7914 goto req_error_parsing;
7915 } else if (!strcmp(args[0], "allow")) {
7916 rule->action = HTTP_REQ_ACT_ALLOW;
7917 cur_arg = 1;
7918 } else if (!strcmp(args[0], "deny")) {
7919 rule->action = HTTP_REQ_ACT_DENY;
7920 cur_arg = 1;
7921 } else if (!strcmp(args[0], "auth")) {
7922 rule->action = HTTP_REQ_ACT_HTTP_AUTH;
7923 cur_arg = 1;
7924
7925 while(*args[cur_arg]) {
7926 if (!strcmp(args[cur_arg], "realm")) {
7927 rule->http_auth.realm = strdup(args[cur_arg + 1]);
7928 cur_arg+=2;
7929 continue;
7930 } else
7931 break;
7932 }
7933 } else {
7934req_error_parsing:
7935 Alert("parsing [%s:%d]: %s '%s', expects 'allow', 'deny', 'auth'.\n",
7936 file, linenum, *args[1]?"unknown parameter":"missing keyword in", args[*args[1]?1:0]);
7937 return NULL;
7938 }
7939
7940 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
7941 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7942 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7943
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7944 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
7945 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
7946 file, linenum, args[0], errmsg);
7947 free(errmsg);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7948 return NULL;
7949 }
7950 rule->cond = cond;
7951 }
7952 else if (*args[cur_arg]) {
7953 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
7954 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
7955 file, linenum, args[0], args[cur_arg]);
7956 return NULL;
7957 }
7958
7959 return rule;
7960}
7961
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7962/************************************************************************/
7963/* The code below is dedicated to ACL parsing and matching */
7964/************************************************************************/
7965
7966
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7967/* This function ensures that the prerequisites for an L7 fetch are ready,
7968 * which means that a request or response is ready. If some data is missing,
7969 * 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]7970 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
7971 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7972 *
7973 * The function returns :
7974 * 0 if some data is missing or if the requested data cannot be fetched
7975 * -1 if it is certain that we'll never have any HTTP message there
7976 * 1 if an HTTP message is ready
7977 */
7978static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7979acl_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7980 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7981{
7982 struct http_txn *txn = l7;
7983 struct http_msg *msg = &txn->req;
7984
7985 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
7986 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
7987 */
7988
7989 if (unlikely(!s || !txn))
7990 return 0;
7991
7992 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7993 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7994
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7995 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7996 if (unlikely(!s->req))
7997 return 0;
7998
7999 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8000 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8001 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8002 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8003 return -1;
8004 }
8005
8006 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8007 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8008 http_msg_analyzer(msg, &txn->hdr_idx);
8009
8010 /* Still no valid request ? */
8011 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8012 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8013 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8014 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8015 return -1;
8016 }
8017 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8018 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8019 return 0;
8020 }
8021
8022 /* OK we just got a valid HTTP request. We have some minor
8023 * preparation to perform so that further checks can rely
8024 * on HTTP tests.
8025 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8026 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8027 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
8028 s->flags |= SN_REDIRECTABLE;
8029
8030 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8031 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8032 return -1;
8033 }
8034 }
8035
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8036 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8037 return 0; /* data might have moved and indexes changed */
8038
8039 /* otherwise everything's ready for the request */
8040 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8041 else {
8042 /* Check for a dependency on a response */
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8043 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8044 return 0;
8045 }
8046
8047 /* everything's OK */
8048 return 1;
8049}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8050
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8051#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8052 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]8053
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8054#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8055 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]8056
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8057
8058/* 1. Check on METHOD
8059 * We use the pre-parsed method if it is known, and store its number as an
8060 * integer. If it is unknown, we use the pointer and the length.
8061 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8062static 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]8063{
8064 int len, meth;
8065
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8066 len = strlen(*text);
8067 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8068
8069 pattern->val.i = meth;
8070 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8071 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8072 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8073 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8074 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8075 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8076 pattern->len = len;
8077 }
8078 return 1;
8079}
8080
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8081/* This function fetches the method of current HTTP request and stores
8082 * it in the global pattern struct as a chunk. There are two possibilities :
8083 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
8084 * in <len> and <ptr> is NULL ;
8085 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
8086 * <len> to its length.
8087 * This is intended to be used with acl_match_meth() only.
8088 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8089static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8090acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8091 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8092{
8093 int meth;
8094 struct http_txn *txn = l7;
8095
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8096 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8097
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8098 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8099 smp->type = SMP_T_UINT;
8100 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8101 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8102 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
8103 /* ensure the indexes are not affected */
8104 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8105 smp->type = SMP_T_CSTR;
8106 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8107 smp->data.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8108 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8109 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8110 return 1;
8111}
8112
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8113/* See above how the method is stored in the global pattern */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8114static int acl_match_meth(struct sample *smp, struct acl_pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8115{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8116 int icase;
8117
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8118
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8119 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8120 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8121 if (smp->data.uint == pattern->val.i)
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8122 return ACL_PAT_PASS;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8123 return ACL_PAT_FAIL;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8124 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8125
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8126 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
8127 if (pattern->val.i != HTTP_METH_OTHER)
8128 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8129
8130 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8131 if (pattern->len != smp->data.str.len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8132 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8133
8134 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8135 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
8136 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8137 return ACL_PAT_FAIL;
8138 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8139}
8140
8141/* 2. Check on Request/Status Version
8142 * We simply compare strings here.
8143 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8144static 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]8145{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8146 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8147 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8148 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8149 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8150 }
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8151 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8152 return 1;
8153}
8154
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8155static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8156acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8157 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8158{
8159 struct http_txn *txn = l7;
8160 char *ptr;
8161 int len;
8162
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8163 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8164
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8165 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8166 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8167
8168 while ((len-- > 0) && (*ptr++ != '/'));
8169 if (len <= 0)
8170 return 0;
8171
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8172 smp->type = SMP_T_CSTR;
8173 smp->data.str.str = ptr;
8174 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8175
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8176 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8177 return 1;
8178}
8179
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8180static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8181acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8182 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8183{
8184 struct http_txn *txn = l7;
8185 char *ptr;
8186 int len;
8187
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8188 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8189
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8190 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8191 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8192
8193 while ((len-- > 0) && (*ptr++ != '/'));
8194 if (len <= 0)
8195 return 0;
8196
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8197 smp->type = SMP_T_CSTR;
8198 smp->data.str.str = ptr;
8199 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8200
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8201 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8202 return 1;
8203}
8204
8205/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8206static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8207acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8208 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8209{
8210 struct http_txn *txn = l7;
8211 char *ptr;
8212 int len;
8213
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8214 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8215
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8216 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8217 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8218
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8219 smp->type = SMP_T_UINT;
8220 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8221 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8222 return 1;
8223}
8224
8225/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8226static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8227smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8228 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8229{
8230 struct http_txn *txn = l7;
8231
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8232 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8233
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8234 smp->type = SMP_T_CSTR;
8235 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8236 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8237 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8238 return 1;
8239}
8240
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8241static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8242smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8243 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8244{
8245 struct http_txn *txn = l7;
8246
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8247 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8248
8249 /* Parse HTTP request */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8250 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->conn->addr.to);
8251 if (((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]8252 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8253 smp->type = SMP_T_IPV4;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8254 smp->data.ipv4 = ((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8255
8256 /*
8257 * If we are parsing url in frontend space, we prepare backend stage
8258 * to not parse again the same url ! optimization lazyness...
8259 */
8260 if (px->options & PR_O_HTTP_PROXY)
8261 l4->flags |= SN_ADDR_SET;
8262
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8263 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8264 return 1;
8265}
8266
8267static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8268smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8269 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8270{
8271 struct http_txn *txn = l7;
8272
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8273 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8274
8275 /* Same optimization as url_ip */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8276 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]8277 smp->type = SMP_T_UINT;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8278 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]8279
8280 if (px->options & PR_O_HTTP_PROXY)
8281 l4->flags |= SN_ADDR_SET;
8282
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8283 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8284 return 1;
8285}
8286
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8287/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
8288 * Accepts an optional argument of type string containing the header field name,
8289 * and an optional argument of type signed or unsigned integer to request an
8290 * explicit occurrence of the header. Note that in the event of a missing name,
8291 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8292 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8293static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8294smp_fetch_hdr(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{
8297 struct http_txn *txn = l7;
8298 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8299 struct hdr_ctx *ctx = (struct hdr_ctx *)smp->ctx.a;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8300 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]8301 int occ = 0;
8302 const char *name_str = NULL;
8303 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8304
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8305 if (args) {
8306 if (args[0].type != ARGT_STR)
8307 return 0;
8308 name_str = args[0].data.str.str;
8309 name_len = args[0].data.str.len;
8310
8311 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
8312 occ = args[1].data.uint;
8313 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8314
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8315 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8316
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8317 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8318 /* search for header from the beginning */
8319 ctx->idx = 0;
8320
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8321 if (!occ && !(opt & SMP_OPT_ITERATE))
8322 /* no explicit occurrence and single fetch => last header by default */
8323 occ = -1;
8324
8325 if (!occ)
8326 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8327 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]8328
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8329 smp->type = SMP_T_CSTR;
8330 smp->flags |= SMP_F_VOL_HDR;
8331 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]8332 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8333
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8334 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8335 return 0;
8336}
8337
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8338/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8339 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8340 */
8341static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8342smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8343 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8344{
8345 struct http_txn *txn = l7;
8346 struct hdr_idx *idx = &txn->hdr_idx;
8347 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8348 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]8349 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8350
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8351 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8352 return 0;
8353
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8354 CHECK_HTTP_MESSAGE_FIRST();
8355
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8356 ctx.idx = 0;
8357 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8358 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]8359 cnt++;
8360
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8361 smp->type = SMP_T_UINT;
8362 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8363 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8364 return 1;
8365}
8366
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8367/* Fetch an HTTP header's integer value. The integer value is returned. It
8368 * takes a mandatory argument of type string and an optional one of type int
8369 * to designate a specific occurrence. It returns an unsigned integer, which
8370 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8371 */
8372static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8373smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8374 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8375{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8376 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8377
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8378 if (ret > 0) {
8379 smp->type = SMP_T_UINT;
8380 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8381 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8382
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8383 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8384}
8385
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8386/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
8387 * and an optional one of type int to designate a specific occurrence.
8388 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8389 */
8390static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8391smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8392 const struct arg *args, struct sample *smp)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8393{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8394 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8395
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8396 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8397 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
8398 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8399 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8400 } else {
8401 struct chunk *temp = sample_get_trash_chunk();
8402 if (smp->data.str.len < temp->size - 1) {
8403 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
8404 temp->str[smp->data.str.len] = '\0';
8405 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
8406 smp->type = SMP_T_IPV6;
8407 break;
8408 }
8409 }
8410 }
8411
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8412 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8413 if (!(smp->flags & SMP_F_NOT_LAST))
8414 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8415 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8416 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8417}
8418
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8419/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
8420 * the first '/' after the possible hostname, and ends before the possible '?'.
8421 */
8422static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8423smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8424 const struct arg *args, struct sample *smp)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8425{
8426 struct http_txn *txn = l7;
8427 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8428
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8429 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8430
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8431 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]8432 ptr = http_get_path(txn);
8433 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8434 return 0;
8435
8436 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8437 smp->type = SMP_T_CSTR;
8438 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8439
8440 while (ptr < end && *ptr != '?')
8441 ptr++;
8442
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8443 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8444 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8445 return 1;
8446}
8447
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8448/* This produces a concatenation of the first occurrence of the Host header
8449 * followed by the path component if it begins with a slash ('/'). This means
8450 * that '*' will not be added, resulting in exactly the first Host entry.
8451 * If no Host header is found, then the path is returned as-is. The returned
8452 * value is stored in the trash so it does not need to be marked constant.
8453 */
8454static int
8455smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8456 const struct arg *args, struct sample *smp)
8457{
8458 struct http_txn *txn = l7;
8459 char *ptr, *end, *beg;
8460 struct hdr_ctx ctx;
8461
8462 CHECK_HTTP_MESSAGE_FIRST();
8463
8464 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8465 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]8466 !ctx.vlen)
8467 return smp_fetch_path(px, l4, l7, opt, args, smp);
8468
8469 /* 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]8470 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8471 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8472 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8473 smp->data.str.len = ctx.vlen;
8474
8475 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8476 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]8477 beg = http_get_path(txn);
8478 if (!beg)
8479 beg = end;
8480
8481 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
8482
8483 if (beg < ptr && *beg == '/') {
8484 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
8485 smp->data.str.len += ptr - beg;
8486 }
8487
8488 smp->flags = SMP_F_VOL_1ST;
8489 return 1;
8490}
8491
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]8492/* This produces a 32-bit hash of the concatenation of the first occurrence of
8493 * the Host header followed by the path component if it begins with a slash ('/').
8494 * This means that '*' will not be added, resulting in exactly the first Host
8495 * entry. If no Host header is found, then the path is used. The resulting value
8496 * is hashed using the url hash followed by a full avalanche hash and provides a
8497 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
8498 * high-traffic sites without having to store whole paths.
8499 */
8500static int
8501smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8502 const struct arg *args, struct sample *smp)
8503{
8504 struct http_txn *txn = l7;
8505 struct hdr_ctx ctx;
8506 unsigned int hash = 0;
8507 char *ptr, *beg, *end;
8508 int len;
8509
8510 CHECK_HTTP_MESSAGE_FIRST();
8511
8512 ctx.idx = 0;
8513 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
8514 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
8515 ptr = ctx.line + ctx.val;
8516 len = ctx.vlen;
8517 while (len--)
8518 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
8519 }
8520
8521 /* now retrieve the path */
8522 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
8523 beg = http_get_path(txn);
8524 if (!beg)
8525 beg = end;
8526
8527 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
8528
8529 if (beg < ptr && *beg == '/') {
8530 while (beg < ptr)
8531 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
8532 }
8533 hash = full_hash(hash);
8534
8535 smp->type = SMP_T_UINT;
8536 smp->data.uint = hash;
8537 smp->flags = SMP_F_VOL_1ST;
8538 return 1;
8539}
8540
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]8541/* This concatenates the source address with the 32-bit hash of the Host and
8542 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
8543 * per-url counters. The result is a binary block from 8 to 20 bytes depending
8544 * on the source address length. The URL hash is stored before the address so
8545 * that in environments where IPv6 is insignificant, truncating the output to
8546 * 8 bytes would still work.
8547 */
8548static int
8549smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8550 const struct arg *args, struct sample *smp)
8551{
8552 struct chunk *temp = sample_get_trash_chunk();
8553
8554 if (!smp_fetch_base32(px, l4, l7, opt, args, smp))
8555 return 0;
8556
8557 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
8558 temp->len += sizeof(smp->data.uint);
8559
8560 switch (l4->si[0].conn->addr.from.ss_family) {
8561 case AF_INET:
8562 memcpy(temp->str + temp->len, &((struct sockaddr_in *)&l4->si[0].conn->addr.from)->sin_addr, 4);
8563 temp->len += 4;
8564 break;
8565 case AF_INET6:
8566 memcpy(temp->str + temp->len, &((struct sockaddr_in6 *)(&l4->si[0].conn->addr.from))->sin6_addr, 16);
8567 temp->len += 16;
8568 break;
8569 default:
8570 return 0;
8571 }
8572
8573 smp->data.str = *temp;
8574 smp->type = SMP_T_BIN;
8575 return 1;
8576}
8577
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8578static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8579acl_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8580 const struct arg *args, struct sample *smp)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8581{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8582 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8583 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8584 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8585
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8586 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8587
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8588 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8589 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8590 return 1;
8591}
8592
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8593/* return a valid test if the current request is the first one on the connection */
8594static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8595acl_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]8596 const struct arg *args, struct sample *smp)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8597{
8598 if (!s)
8599 return 0;
8600
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8601 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8602 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8603 return 1;
8604}
8605
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8606/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8607static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8608acl_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8609 const struct arg *args, struct sample *smp)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8610{
8611
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8612 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8613 return 0;
8614
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8615 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8616
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8617 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8618 return 0;
8619
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8620 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8621 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]8622 return 1;
8623}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8624
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]8625/* Accepts exactly 1 argument of type userlist */
8626static int
8627acl_fetch_http_auth_grp(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8628 const struct arg *args, struct sample *smp)
8629{
8630
8631 if (!args || args->type != ARGT_USR)
8632 return 0;
8633
8634 CHECK_HTTP_MESSAGE_FIRST();
8635
8636 if (!get_http_auth(l4))
8637 return 0;
8638
8639 /* acl_match_auth() will need several information at once */
8640 smp->ctx.a[0] = args->data.usr; /* user list */
8641 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
8642 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
8643
8644 /* if the user does not belong to the userlist or has a wrong password,
8645 * report that it unconditionally does not match. Otherwise we return
8646 * a non-zero integer which will be ignored anyway since all the params
8647 * that acl_match_auth() will use are in test->ctx.a[0,1,2].
8648 */
8649 smp->type = SMP_T_BOOL;
8650 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
8651 if (smp->data.uint)
8652 smp->type = SMP_T_UINT;
8653
8654 return 1;
8655}
8656
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8657/* Try to find the next occurrence of a cookie name in a cookie header value.
8658 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
8659 * the cookie value is returned into *value and *value_l, and the function
8660 * returns a pointer to the next pointer to search from if the value was found.
8661 * Otherwise if the cookie was not found, NULL is returned and neither value
8662 * nor value_l are touched. The input <hdr> string should first point to the
8663 * header's value, and the <hdr_end> pointer must point to the first character
8664 * not part of the value. <list> must be non-zero if value may represent a list
8665 * of values (cookie headers). This makes it faster to abort parsing when no
8666 * list is expected.
8667 */
8668static char *
8669extract_cookie_value(char *hdr, const char *hdr_end,
8670 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]8671 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8672{
8673 char *equal, *att_end, *att_beg, *val_beg, *val_end;
8674 char *next;
8675
8676 /* we search at least a cookie name followed by an equal, and more
8677 * generally something like this :
8678 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
8679 */
8680 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
8681 /* Iterate through all cookies on this line */
8682
8683 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8684 att_beg++;
8685
8686 /* find att_end : this is the first character after the last non
8687 * space before the equal. It may be equal to hdr_end.
8688 */
8689 equal = att_end = att_beg;
8690
8691 while (equal < hdr_end) {
8692 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
8693 break;
8694 if (http_is_spht[(unsigned char)*equal++])
8695 continue;
8696 att_end = equal;
8697 }
8698
8699 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8700 * is between <att_beg> and <equal>, both may be identical.
8701 */
8702
8703 /* look for end of cookie if there is an equal sign */
8704 if (equal < hdr_end && *equal == '=') {
8705 /* look for the beginning of the value */
8706 val_beg = equal + 1;
8707 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8708 val_beg++;
8709
8710 /* find the end of the value, respecting quotes */
8711 next = find_cookie_value_end(val_beg, hdr_end);
8712
8713 /* make val_end point to the first white space or delimitor after the value */
8714 val_end = next;
8715 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8716 val_end--;
8717 } else {
8718 val_beg = val_end = next = equal;
8719 }
8720
8721 /* We have nothing to do with attributes beginning with '$'. However,
8722 * they will automatically be removed if a header before them is removed,
8723 * since they're supposed to be linked together.
8724 */
8725 if (*att_beg == '$')
8726 continue;
8727
8728 /* Ignore cookies with no equal sign */
8729 if (equal == next)
8730 continue;
8731
8732 /* Now we have the cookie name between att_beg and att_end, and
8733 * its value between val_beg and val_end.
8734 */
8735
8736 if (att_end - att_beg == cookie_name_l &&
8737 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
8738 /* let's return this value and indicate where to go on from */
8739 *value = val_beg;
8740 *value_l = val_end - val_beg;
8741 return next + 1;
8742 }
8743
8744 /* Set-Cookie headers only have the name in the first attr=value part */
8745 if (!list)
8746 break;
8747 }
8748
8749 return NULL;
8750}
8751
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8752/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8753 * smp->ctx.a[0] for the in-header position, smp->ctx.a[1] for the
8754 * 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]8755 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8756 * 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]8757 * Accepts exactly 1 argument of type string. If the input options indicate
8758 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8759 */
8760static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8761smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8762 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8763{
8764 struct http_txn *txn = l7;
8765 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8766 struct hdr_ctx *ctx = (struct hdr_ctx *)&smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8767 const struct http_msg *msg;
8768 const char *hdr_name;
8769 int hdr_name_len;
8770 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8771 int occ = 0;
8772 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8773
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8774 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8775 return 0;
8776
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8777 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8778
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8779 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8780 msg = &txn->req;
8781 hdr_name = "Cookie";
8782 hdr_name_len = 6;
8783 } else {
8784 msg = &txn->rsp;
8785 hdr_name = "Set-Cookie";
8786 hdr_name_len = 10;
8787 }
8788
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8789 if (!occ && !(opt & SMP_OPT_ITERATE))
8790 /* no explicit occurrence and single fetch => last cookie by default */
8791 occ = -1;
8792
8793 /* OK so basically here, either we want only one value and it's the
8794 * last one, or we want to iterate over all of them and we fetch the
8795 * next one.
8796 */
8797
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8798 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8799 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8800 /* search for the header from the beginning, we must first initialize
8801 * the search parameters.
8802 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8803 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8804 ctx->idx = 0;
8805 }
8806
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8807 smp->flags |= SMP_F_VOL_HDR;
8808
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8809 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8810 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
8811 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8812 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
8813 goto out;
8814
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8815 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8816 continue;
8817
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8818 smp->ctx.a[0] = ctx->line + ctx->val;
8819 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8820 }
8821
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8822 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8823 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]8824 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8825 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8826 &smp->data.str.str,
8827 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8828 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8829 found = 1;
8830 if (occ >= 0) {
8831 /* one value was returned into smp->data.str.{str,len} */
8832 smp->flags |= SMP_F_NOT_LAST;
8833 return 1;
8834 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8835 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8836 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8837 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8838 /* all cookie headers and values were scanned. If we're looking for the
8839 * last occurrence, we may return it now.
8840 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8841 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8842 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8843 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8844}
8845
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8846/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8847 * 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]8848 * multiple cookies may be parsed on the same line.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8849 * Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8850 */
8851static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8852acl_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8853 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8854{
8855 struct http_txn *txn = l7;
8856 struct hdr_idx *idx = &txn->hdr_idx;
8857 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8858 const struct http_msg *msg;
8859 const char *hdr_name;
8860 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8861 int cnt;
8862 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8863 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8864
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8865 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8866 return 0;
8867
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8868 CHECK_HTTP_MESSAGE_FIRST();
8869
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8870 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8871 msg = &txn->req;
8872 hdr_name = "Cookie";
8873 hdr_name_len = 6;
8874 } else {
8875 msg = &txn->rsp;
8876 hdr_name = "Set-Cookie";
8877 hdr_name_len = 10;
8878 }
8879
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8880 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]8881 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8882 ctx.idx = 0;
8883 cnt = 0;
8884
8885 while (1) {
8886 /* Note: val_beg == NULL every time we need to fetch a new header */
8887 if (!val_beg) {
8888 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
8889 break;
8890
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8891 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8892 continue;
8893
8894 val_beg = ctx.line + ctx.val;
8895 val_end = val_beg + ctx.vlen;
8896 }
8897
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8898 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8899 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8900 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8901 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8902 &smp->data.str.str,
8903 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8904 cnt++;
8905 }
8906 }
8907
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8908 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8909 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8910 return 1;
8911}
8912
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8913/* Fetch an cookie's integer value. The integer value is returned. It
8914 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
8915 */
8916static int
8917smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8918 const struct arg *args, struct sample *smp)
8919{
8920 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp);
8921
8922 if (ret > 0) {
8923 smp->type = SMP_T_UINT;
8924 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8925 }
8926
8927 return ret;
8928}
8929
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8930/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8931/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8932/************************************************************************/
8933
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8934/*
8935 * Given a path string and its length, find the position of beginning of the
8936 * query string. Returns NULL if no query string is found in the path.
8937 *
8938 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
8939 *
8940 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
8941 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8942static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8943{
8944 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]8945
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8946 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8947 return p ? p + 1 : NULL;
8948}
8949
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8950static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8951{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8952 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8953}
8954
8955/*
8956 * Given a url parameter, find the starting position of the first occurence,
8957 * or NULL if the parameter is not found.
8958 *
8959 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
8960 * the function will return query_string+8.
8961 */
8962static char*
8963find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8964 char* url_param_name, size_t url_param_name_l,
8965 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8966{
8967 char *pos, *last;
8968
8969 pos = query_string;
8970 last = query_string + query_string_l - url_param_name_l - 1;
8971
8972 while (pos <= last) {
8973 if (pos[url_param_name_l] == '=') {
8974 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
8975 return pos;
8976 pos += url_param_name_l + 1;
8977 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8978 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8979 pos++;
8980 pos++;
8981 }
8982 return NULL;
8983}
8984
8985/*
8986 * Given a url parameter name, returns its value and size into *value and
8987 * *value_l respectively, and returns non-zero. If the parameter is not found,
8988 * zero is returned and value/value_l are not touched.
8989 */
8990static int
8991find_url_param_value(char* path, size_t path_l,
8992 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8993 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8994{
8995 char *query_string, *qs_end;
8996 char *arg_start;
8997 char *value_start, *value_end;
8998
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8999 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9000 if (!query_string)
9001 return 0;
9002
9003 qs_end = path + path_l;
9004 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9005 url_param_name, url_param_name_l,
9006 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9007 if (!arg_start)
9008 return 0;
9009
9010 value_start = arg_start + url_param_name_l + 1;
9011 value_end = value_start;
9012
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9013 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9014 value_end++;
9015
9016 *value = value_start;
9017 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]9018 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9019}
9020
9021static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9022smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9023 const struct arg *args, struct sample *smp)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9024{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9025 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9026 struct http_txn *txn = l7;
9027 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9028
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9029 if (!args || args[0].type != ARGT_STR ||
9030 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9031 return 0;
9032
9033 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9034
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9035 if (args[1].type)
9036 delim = *args[1].data.str.str;
9037
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9038 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]9039 args->data.str.str, args->data.str.len,
9040 &smp->data.str.str, &smp->data.str.len,
9041 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9042 return 0;
9043
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]9044 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9045 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9046 return 1;
9047}
9048
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9049/* Return the signed integer value for the specified url parameter (see url_param
9050 * above).
9051 */
9052static int
9053smp_fetch_url_param_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9054 const struct arg *args, struct sample *smp)
9055{
9056 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp);
9057
9058 if (ret > 0) {
9059 smp->type = SMP_T_UINT;
9060 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9061 }
9062
9063 return ret;
9064}
9065
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9066/* This function is used to validate the arguments passed to any "hdr" fetch
9067 * keyword. These keywords support an optional positive or negative occurrence
9068 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
9069 * is assumed that the types are already the correct ones. Returns 0 on error,
9070 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
9071 * error message in case of error, that the caller is responsible for freeing.
9072 * The initial location must either be freeable or NULL.
9073 */
9074static int val_hdr(struct arg *arg, char **err_msg)
9075{
9076 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]9077 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9078 return 0;
9079 }
9080 return 1;
9081}
9082
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9083/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9084/* All supported ACL keywords must be declared here. */
9085/************************************************************************/
9086
9087/* Note: must not be declared <const> as its list will be overwritten.
9088 * Please take care of keeping this list alphabetically sorted.
9089 */
9090static struct acl_kw_list acl_kws = {{ },{
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9091 { "base", acl_parse_str, smp_fetch_base, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9092 { "base_beg", acl_parse_str, smp_fetch_base, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9093 { "base_dir", acl_parse_str, smp_fetch_base, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9094 { "base_dom", acl_parse_str, smp_fetch_base, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9095 { "base_end", acl_parse_str, smp_fetch_base, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9096 { "base_len", acl_parse_int, smp_fetch_base, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9097 { "base_reg", acl_parse_reg, smp_fetch_base, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9098 { "base_sub", acl_parse_str, smp_fetch_base, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
9099
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9100 { "cook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
9101 { "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]9102 { "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]9103 { "cook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9104 { "cook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9105 { "cook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9106 { "cook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9107 { "cook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9108 { "cook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9109 { "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]9110
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9111 { "hdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
9112 { "hdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9113 { "hdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
9114 { "hdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9115 { "hdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9116 { "hdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9117 { "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 },
9118 { "hdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9119 { "hdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9120 { "hdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9121 { "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]9122
9123 { "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]9124 { "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]9125 { "http_first_req", acl_parse_nothing, acl_fetch_http_first_req, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
9126
9127 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT, 0 },
9128
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9129 { "path", acl_parse_str, smp_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9130 { "path_beg", acl_parse_str, smp_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9131 { "path_dir", acl_parse_str, smp_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9132 { "path_dom", acl_parse_str, smp_fetch_path, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9133 { "path_end", acl_parse_str, smp_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9134 { "path_len", acl_parse_int, smp_fetch_path, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9135 { "path_reg", acl_parse_reg, smp_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9136 { "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]9137
9138 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
9139 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9140 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, 0 },
9141
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9142 { "scook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
9143 { "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]9144 { "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]9145 { "scook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9146 { "scook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9147 { "scook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9148 { "scook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9149 { "scook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9150 { "scook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9151 { "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]9152
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9153 { "shdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
9154 { "shdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9155 { "shdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9156 { "shdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9157 { "shdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9158 { "shdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9159 { "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 },
9160 { "shdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9161 { "shdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9162 { "shdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9163 { "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]9164
9165 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT, 0 },
9166
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9167 { "url", acl_parse_str, smp_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9168 { "url_beg", acl_parse_str, smp_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9169 { "url_dir", acl_parse_str, smp_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9170 { "url_dom", acl_parse_str, smp_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9171 { "url_end", acl_parse_str, smp_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9172 { "url_ip", acl_parse_ip, smp_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9173 { "url_len", acl_parse_int, smp_fetch_url, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9174 { "url_port", acl_parse_int, smp_fetch_url_port, acl_match_int, ACL_USE_L7REQ_VOLATILE, 0 },
9175 { "url_reg", acl_parse_reg, smp_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9176 { "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]9177
9178 { "urlp", acl_parse_str, smp_fetch_url_param, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
9179 { "urlp_beg", acl_parse_str, smp_fetch_url_param, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9180 { "urlp_dir", acl_parse_str, smp_fetch_url_param, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9181 { "urlp_dom", acl_parse_str, smp_fetch_url_param, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9182 { "urlp_end", acl_parse_str, smp_fetch_url_param, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9183 { "urlp_ip", acl_parse_ip, smp_fetch_url_param, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
9184 { "urlp_len", acl_parse_int, smp_fetch_url_param, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9185 { "urlp_reg", acl_parse_reg, smp_fetch_url_param, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9186 { "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]9187 { "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]9188
9189 { NULL, NULL, NULL, NULL },
9190}};
9191
9192/************************************************************************/
9193/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9194/************************************************************************/
9195/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9196static struct sample_fetch_kw_list sample_fetch_keywords = {{ },{
Willy Tarreau1b6c00c2012-10-05 22:41:26 +0200[diff] [blame]9197 { "hdr", smp_fetch_hdr, ARG2(1,STR,SINT), val_hdr, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9198 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9199 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_CAP_L7|SMP_CAP_REQ },
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9200 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_CAP_L7|SMP_CAP_REQ },
Willy Tarreau1b6c00c2012-10-05 22:41:26 +0200[diff] [blame]9201 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9202 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9203 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_CAP_L7|SMP_CAP_REQ },
9204 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_CAP_L7|SMP_CAP_REQ },
9205 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9206 { "cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ|SMP_CAP_RES },
9207 { "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]9208 { NULL, NULL, 0, 0, 0 },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9209}};
9210
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9211
9212__attribute__((constructor))
9213static void __http_protocol_init(void)
9214{
9215 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9216 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9217}
9218
9219
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]9220/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]9221 * Local variables:
9222 * c-indent-level: 8
9223 * c-basic-offset: 8
9224 * End:
9225 */