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git01.mediatek.com / haproxy / e2f49441694bb5e0dbc8c346f737e0c2304d6522 / . / src / proto_http.c
blob: 31d49f9997f1eb2da78a492ba4ab02db2a192624 [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4 * Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <ctype.h>
14#include <errno.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <syslog.h>
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]20#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]21
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Willy Tarreaub05405a2012-01-23 15:35:52 +0100[diff] [blame]26#include <netinet/tcp.h>
27
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]28#include <common/appsession.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]29#include <common/base64.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]30#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]31#include <common/compat.h>
32#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]33#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]34#include <common/memory.h>
35#include <common/mini-clist.h>
36#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]37#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]38#include <common/time.h>
39#include <common/uri_auth.h>
40#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]41
42#include <types/capture.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]43#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]44
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]45#include <proto/acl.h>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]46#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]47#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]48#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]49#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]50#include <proto/checks.h>
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]51#include <proto/compression.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]52#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]53#include <proto/fd.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]54#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]55#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]56#include <proto/hdr_idx.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]57#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]58#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]59#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]60#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]61#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]62#include <proto/server.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]63#include <proto/session.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]64#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]65#include <proto/task.h>
66
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]67const char HTTP_100[] =
68 "HTTP/1.1 100 Continue\r\n\r\n";
69
70const struct chunk http_100_chunk = {
71 .str = (char *)&HTTP_100,
72 .len = sizeof(HTTP_100)-1
73};
74
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]75/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]76const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]77 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]78 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]79 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]80 "Location: "; /* not terminated since it will be concatenated with the URL */
81
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]82const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]83 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]84 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]85 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]86 "Location: "; /* not terminated since it will be concatenated with the URL */
87
88/* same as 302 except that the browser MUST retry with the GET method */
89const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]90 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]91 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]92 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]93 "Location: "; /* not terminated since it will be concatenated with the URL */
94
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]95/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
96const char *HTTP_401_fmt =
97 "HTTP/1.0 401 Unauthorized\r\n"
98 "Cache-Control: no-cache\r\n"
99 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]100 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]101 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
102 "\r\n"
103 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
104
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]105const char *HTTP_407_fmt =
106 "HTTP/1.0 407 Unauthorized\r\n"
107 "Cache-Control: no-cache\r\n"
108 "Connection: close\r\n"
109 "Content-Type: text/html\r\n"
110 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
111 "\r\n"
112 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
113
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]114
115const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]116 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]117 [HTTP_ERR_400] = 400,
118 [HTTP_ERR_403] = 403,
119 [HTTP_ERR_408] = 408,
120 [HTTP_ERR_500] = 500,
121 [HTTP_ERR_502] = 502,
122 [HTTP_ERR_503] = 503,
123 [HTTP_ERR_504] = 504,
124};
125
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]126static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]127 [HTTP_ERR_200] =
128 "HTTP/1.0 200 OK\r\n"
129 "Cache-Control: no-cache\r\n"
130 "Connection: close\r\n"
131 "Content-Type: text/html\r\n"
132 "\r\n"
133 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
134
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]135 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]136 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]137 "Cache-Control: no-cache\r\n"
138 "Connection: close\r\n"
139 "Content-Type: text/html\r\n"
140 "\r\n"
141 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
142
143 [HTTP_ERR_403] =
144 "HTTP/1.0 403 Forbidden\r\n"
145 "Cache-Control: no-cache\r\n"
146 "Connection: close\r\n"
147 "Content-Type: text/html\r\n"
148 "\r\n"
149 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
150
151 [HTTP_ERR_408] =
152 "HTTP/1.0 408 Request Time-out\r\n"
153 "Cache-Control: no-cache\r\n"
154 "Connection: close\r\n"
155 "Content-Type: text/html\r\n"
156 "\r\n"
157 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
158
159 [HTTP_ERR_500] =
160 "HTTP/1.0 500 Server Error\r\n"
161 "Cache-Control: no-cache\r\n"
162 "Connection: close\r\n"
163 "Content-Type: text/html\r\n"
164 "\r\n"
165 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
166
167 [HTTP_ERR_502] =
168 "HTTP/1.0 502 Bad Gateway\r\n"
169 "Cache-Control: no-cache\r\n"
170 "Connection: close\r\n"
171 "Content-Type: text/html\r\n"
172 "\r\n"
173 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
174
175 [HTTP_ERR_503] =
176 "HTTP/1.0 503 Service Unavailable\r\n"
177 "Cache-Control: no-cache\r\n"
178 "Connection: close\r\n"
179 "Content-Type: text/html\r\n"
180 "\r\n"
181 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
182
183 [HTTP_ERR_504] =
184 "HTTP/1.0 504 Gateway Time-out\r\n"
185 "Cache-Control: no-cache\r\n"
186 "Connection: close\r\n"
187 "Content-Type: text/html\r\n"
188 "\r\n"
189 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
190
191};
192
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]193/* status codes available for the stats admin page (strictly 4 chars length) */
194const char *stat_status_codes[STAT_STATUS_SIZE] = {
195 [STAT_STATUS_DENY] = "DENY",
196 [STAT_STATUS_DONE] = "DONE",
197 [STAT_STATUS_ERRP] = "ERRP",
198 [STAT_STATUS_EXCD] = "EXCD",
199 [STAT_STATUS_NONE] = "NONE",
200 [STAT_STATUS_PART] = "PART",
201 [STAT_STATUS_UNKN] = "UNKN",
202};
203
204
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]205/* We must put the messages here since GCC cannot initialize consts depending
206 * on strlen().
207 */
208struct chunk http_err_chunks[HTTP_ERR_SIZE];
209
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]210#define FD_SETS_ARE_BITFIELDS
211#ifdef FD_SETS_ARE_BITFIELDS
212/*
213 * This map is used with all the FD_* macros to check whether a particular bit
214 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
215 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
216 * byte should be encoded. Be careful to always pass bytes from 0 to 255
217 * exclusively to the macros.
218 */
219fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
220fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
221
222#else
223#error "Check if your OS uses bitfields for fd_sets"
224#endif
225
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]226void init_proto_http()
227{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]228 int i;
229 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]230 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]231
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]232 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
233 if (!http_err_msgs[msg]) {
234 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
235 abort();
236 }
237
238 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
239 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
240 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]241
242 /* initialize the log header encoding map : '{|}"#' should be encoded with
243 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
244 * URL encoding only requires '"', '#' to be encoded as well as non-
245 * printable characters above.
246 */
247 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
248 memset(url_encode_map, 0, sizeof(url_encode_map));
249 for (i = 0; i < 32; i++) {
250 FD_SET(i, hdr_encode_map);
251 FD_SET(i, url_encode_map);
252 }
253 for (i = 127; i < 256; i++) {
254 FD_SET(i, hdr_encode_map);
255 FD_SET(i, url_encode_map);
256 }
257
258 tmp = "\"#{|}";
259 while (*tmp) {
260 FD_SET(*tmp, hdr_encode_map);
261 tmp++;
262 }
263
264 tmp = "\"#";
265 while (*tmp) {
266 FD_SET(*tmp, url_encode_map);
267 tmp++;
268 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]269
270 /* memory allocations */
271 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]272 pool2_capture = create_pool("capture", CAPTURE_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]273 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]274}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]275
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]276/*
277 * We have 26 list of methods (1 per first letter), each of which can have
278 * up to 3 entries (2 valid, 1 null).
279 */
280struct http_method_desc {
281 http_meth_t meth;
282 int len;
283 const char text[8];
284};
285
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]286const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]287 ['C' - 'A'] = {
288 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
289 },
290 ['D' - 'A'] = {
291 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
292 },
293 ['G' - 'A'] = {
294 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
295 },
296 ['H' - 'A'] = {
297 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
298 },
299 ['P' - 'A'] = {
300 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
301 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
302 },
303 ['T' - 'A'] = {
304 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
305 },
306 /* rest is empty like this :
307 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
308 */
309};
310
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]311/* It is about twice as fast on recent architectures to lookup a byte in a
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]312 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]313 * RFC2616 for those chars.
314 */
315
316const char http_is_spht[256] = {
317 [' '] = 1, ['\t'] = 1,
318};
319
320const char http_is_crlf[256] = {
321 ['\r'] = 1, ['\n'] = 1,
322};
323
324const char http_is_lws[256] = {
325 [' '] = 1, ['\t'] = 1,
326 ['\r'] = 1, ['\n'] = 1,
327};
328
329const char http_is_sep[256] = {
330 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
331 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
332 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
333 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
334 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
335};
336
337const char http_is_ctl[256] = {
338 [0 ... 31] = 1,
339 [127] = 1,
340};
341
342/*
343 * A token is any ASCII char that is neither a separator nor a CTL char.
344 * Do not overwrite values in assignment since gcc-2.95 will not handle
345 * them correctly. Instead, define every non-CTL char's status.
346 */
347const char http_is_token[256] = {
348 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
349 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
350 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
351 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
352 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
353 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
354 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
355 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
356 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
357 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
358 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
359 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
360 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
361 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
362 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
363 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
364 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
365 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
366 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
367 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
368 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
369 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
370 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
371 ['|'] = 1, ['}'] = 0, ['~'] = 1,
372};
373
374
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]375/*
376 * An http ver_token is any ASCII which can be found in an HTTP version,
377 * which includes 'H', 'T', 'P', '/', '.' and any digit.
378 */
379const char http_is_ver_token[256] = {
380 ['.'] = 1, ['/'] = 1,
381 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
382 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
383 ['H'] = 1, ['P'] = 1, ['T'] = 1,
384};
385
386
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]387/*
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]388 * Silent debug that outputs only in strace, using fd #-1. Trash is modified.
389 */
390#if defined(DEBUG_FSM)
391static void http_silent_debug(int line, struct session *s)
392{
393 int size = 0;
Willy Tarreauc919dc62012-10-26 17:35:22 +0200[diff] [blame]394 size += snprintf(trash + size, global.tune.bufsize - size,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]395 "[%04d] req: p=%d(%d) s=%d bf=%08x an=%08x data=%p size=%d l=%d w=%p r=%p o=%p sm=%d fw=%ld tf=%08x\n",
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]396 line,
397 s->si[0].state, s->si[0].fd, s->txn.req.msg_state, s->req->flags, s->req->analysers,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]398 s->req->buf->data, s->req->buf->size, s->req->l, s->req->w, s->req->r, s->req->buf->p, s->req->buf->o, s->req->to_forward, s->txn.flags);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]399 write(-1, trash, size);
400 size = 0;
Willy Tarreauc919dc62012-10-26 17:35:22 +0200[diff] [blame]401 size += snprintf(trash + size, global.tune.bufsize - size,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]402 " %04d rep: p=%d(%d) s=%d bf=%08x an=%08x data=%p size=%d l=%d w=%p r=%p o=%p sm=%d fw=%ld\n",
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]403 line,
404 s->si[1].state, s->si[1].fd, s->txn.rsp.msg_state, s->rep->flags, s->rep->analysers,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]405 s->rep->buf->data, s->rep->buf->size, s->rep->l, s->rep->w, s->rep->r, s->rep->buf->p, s->rep->buf->o, s->rep->to_forward);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]406
407 write(-1, trash, size);
408}
409#else
410#define http_silent_debug(l,s) do { } while (0)
411#endif
412
413/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]414 * Adds a header and its CRLF at the tail of the message's buffer, just before
415 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]416 * The header is also automatically added to the index <hdr_idx>, and the end
417 * of headers is automatically adjusted. The number of bytes added is returned
418 * on success, otherwise <0 is returned indicating an error.
419 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]420int 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]421{
422 int bytes, len;
423
424 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]425 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]426 if (!bytes)
427 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]428 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]429 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
430}
431
432/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]433 * Adds a header and its CRLF at the tail of the message's buffer, just before
434 * 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]435 * the buffer is only opened and the space reserved, but nothing is copied.
436 * The header is also automatically added to the index <hdr_idx>, and the end
437 * of headers is automatically adjusted. The number of bytes added is returned
438 * on success, otherwise <0 is returned indicating an error.
439 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]440int http_header_add_tail2(struct http_msg *msg,
441 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]442{
443 int bytes;
444
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]445 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]446 if (!bytes)
447 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]448 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]449 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
450}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]451
452/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]453 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
454 * If so, returns the position of the first non-space character relative to
455 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
456 * to return a pointer to the place after the first space. Returns 0 if the
457 * header name does not match. Checks are case-insensitive.
458 */
459int http_header_match2(const char *hdr, const char *end,
460 const char *name, int len)
461{
462 const char *val;
463
464 if (hdr + len >= end)
465 return 0;
466 if (hdr[len] != ':')
467 return 0;
468 if (strncasecmp(hdr, name, len) != 0)
469 return 0;
470 val = hdr + len + 1;
471 while (val < end && HTTP_IS_SPHT(*val))
472 val++;
473 if ((val >= end) && (len + 2 <= end - hdr))
474 return len + 2; /* we may replace starting from second space */
475 return val - hdr;
476}
477
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]478/* Find the end of the header value contained between <s> and <e>. See RFC2616,
479 * par 2.2 for more information. Note that it requires a valid header to return
480 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]481 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]482char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]483{
484 int quoted, qdpair;
485
486 quoted = qdpair = 0;
487 for (; s < e; s++) {
488 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]489 else if (quoted) {
490 if (*s == '\\') qdpair = 1;
491 else if (*s == '"') quoted = 0;
492 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]493 else if (*s == '"') quoted = 1;
494 else if (*s == ',') return s;
495 }
496 return s;
497}
498
499/* Find the first or next occurrence of header <name> in message buffer <sol>
500 * using headers index <idx>, and return it in the <ctx> structure. This
501 * structure holds everything necessary to use the header and find next
502 * occurrence. If its <idx> member is 0, the header is searched from the
503 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]504 * 1 when it finds a value, and 0 when there is no more. It is designed to work
505 * with headers defined as comma-separated lists. As a special case, if ctx->val
506 * is NULL when searching for a new values of a header, the current header is
507 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]508 */
509int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]510 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]511 struct hdr_ctx *ctx)
512{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]513 char *eol, *sov;
514 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]515
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]516 cur_idx = ctx->idx;
517 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]518 /* We have previously returned a value, let's search
519 * another one on the same line.
520 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]521 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]522 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]523 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]524 eol = sol + idx->v[cur_idx].len;
525
526 if (sov >= eol)
527 /* no more values in this header */
528 goto next_hdr;
529
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]530 /* values remaining for this header, skip the comma but save it
531 * for later use (eg: for header deletion).
532 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]533 sov++;
534 while (sov < eol && http_is_lws[(unsigned char)*sov])
535 sov++;
536
537 goto return_hdr;
538 }
539
540 /* first request for this header */
541 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]542 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]543 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]544 while (cur_idx) {
545 eol = sol + idx->v[cur_idx].len;
546
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]547 if (len == 0) {
548 /* No argument was passed, we want any header.
549 * To achieve this, we simply build a fake request. */
550 while (sol + len < eol && sol[len] != ':')
551 len++;
552 name = sol;
553 }
554
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]555 if ((len < eol - sol) &&
556 (sol[len] == ':') &&
557 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]558 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]559 sov = sol + len + 1;
560 while (sov < eol && http_is_lws[(unsigned char)*sov])
561 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]562
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]563 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]564 ctx->prev = old_idx;
565 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]566 ctx->idx = cur_idx;
567 ctx->val = sov - sol;
568
569 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]570 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]571 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]572 eol--;
573 ctx->tws++;
574 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]575 ctx->vlen = eol - sov;
576 return 1;
577 }
578 next_hdr:
579 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]580 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]581 cur_idx = idx->v[cur_idx].next;
582 }
583 return 0;
584}
585
586int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]587 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]588 struct hdr_ctx *ctx)
589{
590 return http_find_header2(name, strlen(name), sol, idx, ctx);
591}
592
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]593/* Remove one value of a header. This only works on a <ctx> returned by one of
594 * the http_find_header functions. The value is removed, as well as surrounding
595 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]596 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]597 * message <msg>. The new index is returned. If it is zero, it means there is
598 * no more header, so any processing may stop. The ctx is always left in a form
599 * that can be handled by http_find_header2() to find next occurrence.
600 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]601int 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]602{
603 int cur_idx = ctx->idx;
604 char *sol = ctx->line;
605 struct hdr_idx_elem *hdr;
606 int delta, skip_comma;
607
608 if (!cur_idx)
609 return 0;
610
611 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]612 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]613 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]614 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]615 http_msg_move_end(msg, delta);
616 idx->used--;
617 hdr->len = 0; /* unused entry */
618 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]619 if (idx->tail == ctx->idx)
620 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]621 ctx->idx = ctx->prev; /* walk back to the end of previous header */
622 ctx->line -= idx->v[ctx->idx].len + idx->v[cur_idx].cr + 1;
623 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]624 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]625 return ctx->idx;
626 }
627
628 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]629 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
630 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]631 */
632
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]633 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]634 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]635 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]636 NULL, 0);
637 hdr->len += delta;
638 http_msg_move_end(msg, delta);
639 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]640 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]641 return ctx->idx;
642}
643
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]644/* This function handles a server error at the stream interface level. The
645 * stream interface is assumed to be already in a closed state. An optional
646 * message is copied into the input buffer, and an HTTP status code stored.
647 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]648 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]649 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]650static void http_server_error(struct session *t, struct stream_interface *si,
651 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]652{
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]653 channel_auto_read(si->ob);
654 channel_abort(si->ob);
655 channel_auto_close(si->ob);
656 channel_erase(si->ob);
657 channel_auto_close(si->ib);
658 channel_auto_read(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]659 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]660 t->txn.status = status;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]661 bo_inject(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]662 }
663 if (!(t->flags & SN_ERR_MASK))
664 t->flags |= err;
665 if (!(t->flags & SN_FINST_MASK))
666 t->flags |= finst;
667}
668
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]669/* This function returns the appropriate error location for the given session
670 * and message.
671 */
672
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]673struct chunk *http_error_message(struct session *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]674{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]675 if (s->be->errmsg[msgnum].str)
676 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]677 else if (s->fe->errmsg[msgnum].str)
678 return &s->fe->errmsg[msgnum];
679 else
680 return &http_err_chunks[msgnum];
681}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]682
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]683/*
684 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
685 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
686 */
687static http_meth_t find_http_meth(const char *str, const int len)
688{
689 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]690 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]691
692 m = ((unsigned)*str - 'A');
693
694 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]695 for (h = http_methods[m]; h->len > 0; h++) {
696 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]697 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]698 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]699 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]700 };
701 return HTTP_METH_OTHER;
702 }
703 return HTTP_METH_NONE;
704
705}
706
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]707/* Parse the URI from the given transaction (which is assumed to be in request
708 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
709 * It is returned otherwise.
710 */
711static char *
712http_get_path(struct http_txn *txn)
713{
714 char *ptr, *end;
715
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]716 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]717 end = ptr + txn->req.sl.rq.u_l;
718
719 if (ptr >= end)
720 return NULL;
721
722 /* RFC2616, par. 5.1.2 :
723 * Request-URI = "*" | absuri | abspath | authority
724 */
725
726 if (*ptr == '*')
727 return NULL;
728
729 if (isalpha((unsigned char)*ptr)) {
730 /* this is a scheme as described by RFC3986, par. 3.1 */
731 ptr++;
732 while (ptr < end &&
733 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
734 ptr++;
735 /* skip '://' */
736 if (ptr == end || *ptr++ != ':')
737 return NULL;
738 if (ptr == end || *ptr++ != '/')
739 return NULL;
740 if (ptr == end || *ptr++ != '/')
741 return NULL;
742 }
743 /* skip [user[:passwd]@]host[:[port]] */
744
745 while (ptr < end && *ptr != '/')
746 ptr++;
747
748 if (ptr == end)
749 return NULL;
750
751 /* OK, we got the '/' ! */
752 return ptr;
753}
754
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]755/* Returns a 302 for a redirectable request. This may only be called just after
756 * the stream interface has moved to SI_ST_ASS. Unprocessable requests are
757 * left unchanged and will follow normal proxy processing.
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]758 * NOTE: this function is designed to support being called once data are scheduled
759 * for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]760 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]761void perform_http_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]762{
763 struct http_txn *txn;
764 struct chunk rdr;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]765 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]766 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]767 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]768
769 /* 1: create the response header */
770 rdr.len = strlen(HTTP_302);
771 rdr.str = trash;
Willy Tarreauc919dc62012-10-26 17:35:22 +0200[diff] [blame]772 rdr.size = global.tune.bufsize;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]773 memcpy(rdr.str, HTTP_302, rdr.len);
774
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]775 srv = target_srv(&s->target);
776
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]777 /* 2: add the server's prefix */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]778 if (rdr.len + srv->rdr_len > rdr.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]779 return;
780
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]781 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]782 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
783 memcpy(rdr.str + rdr.len, srv->rdr_pfx, srv->rdr_len);
784 rdr.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]785 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]786
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]787 /* 3: add the request URI. Since it was already forwarded, we need
788 * to temporarily rewind the buffer.
789 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]790 txn = &s->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]791 b_rew(s->req->buf, rewind = s->req->buf->o);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]792
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]793 path = http_get_path(txn);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]794 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]795
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]796 b_adv(s->req->buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]797
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]798 if (!path)
799 return;
800
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]801 if (rdr.len + len > rdr.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]802 return;
803
804 memcpy(rdr.str + rdr.len, path, len);
805 rdr.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]806
807 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
808 memcpy(rdr.str + rdr.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
809 rdr.len += 29;
810 } else {
811 memcpy(rdr.str + rdr.len, "\r\nConnection: close\r\n\r\n", 23);
812 rdr.len += 23;
813 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]814
815 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]816 si_shutr(si);
817 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]818 si->err_type = SI_ET_NONE;
819 si->err_loc = NULL;
820 si->state = SI_ST_CLO;
821
822 /* send the message */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]823 http_server_error(s, si, SN_ERR_PRXCOND, SN_FINST_C, 302, &rdr);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]824
825 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]826 if (srv)
827 srv_inc_sess_ctr(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]828}
829
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]830/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]831 * that the server side is closed. Note that err_type is actually a
832 * bitmask, where almost only aborts may be cumulated with other
833 * values. We consider that aborted operations are more important
834 * than timeouts or errors due to the fact that nobody else in the
835 * logs might explain incomplete retries. All others should avoid
836 * being cumulated. It should normally not be possible to have multiple
837 * aborts at once, but just in case, the first one in sequence is reported.
838 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]839void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]840{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]841 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]842
843 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]844 http_server_error(s, si, SN_ERR_CLICL, 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_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]847 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
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_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]850 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
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_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]853 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
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 if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]856 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]857 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]858 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]859 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]860 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]861 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]862 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]863 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]864}
865
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]866extern const char sess_term_cond[8];
867extern const char sess_fin_state[8];
868extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]869struct pool_head *pool2_requri;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]870struct pool_head *pool2_capture;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]871struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]872
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]873/*
874 * Capture headers from message starting at <som> according to header list
875 * <cap_hdr>, and fill the <idx> structure appropriately.
876 */
877void capture_headers(char *som, struct hdr_idx *idx,
878 char **cap, struct cap_hdr *cap_hdr)
879{
880 char *eol, *sol, *col, *sov;
881 int cur_idx;
882 struct cap_hdr *h;
883 int len;
884
885 sol = som + hdr_idx_first_pos(idx);
886 cur_idx = hdr_idx_first_idx(idx);
887
888 while (cur_idx) {
889 eol = sol + idx->v[cur_idx].len;
890
891 col = sol;
892 while (col < eol && *col != ':')
893 col++;
894
895 sov = col + 1;
896 while (sov < eol && http_is_lws[(unsigned char)*sov])
897 sov++;
898
899 for (h = cap_hdr; h; h = h->next) {
900 if ((h->namelen == col - sol) &&
901 (strncasecmp(sol, h->name, h->namelen) == 0)) {
902 if (cap[h->index] == NULL)
903 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]904 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]905
906 if (cap[h->index] == NULL) {
907 Alert("HTTP capture : out of memory.\n");
908 continue;
909 }
910
911 len = eol - sov;
912 if (len > h->len)
913 len = h->len;
914
915 memcpy(cap[h->index], sov, len);
916 cap[h->index][len]=0;
917 }
918 }
919 sol = eol + idx->v[cur_idx].cr + 1;
920 cur_idx = idx->v[cur_idx].next;
921 }
922}
923
924
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]925/* either we find an LF at <ptr> or we jump to <bad>.
926 */
927#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
928
929/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
930 * otherwise to <http_msg_ood> with <state> set to <st>.
931 */
932#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
933 ptr++; \
934 if (likely(ptr < end)) \
935 goto good; \
936 else { \
937 state = (st); \
938 goto http_msg_ood; \
939 } \
940 } while (0)
941
942
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]943/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]944 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]945 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
946 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
947 * will give undefined results.
948 * Note that it is upon the caller's responsibility to ensure that ptr < end,
949 * and that msg->sol points to the beginning of the response.
950 * If a complete line is found (which implies that at least one CR or LF is
951 * found before <end>, the updated <ptr> is returned, otherwise NULL is
952 * returned indicating an incomplete line (which does not mean that parts have
953 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
954 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
955 * upon next call.
956 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]957 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]958 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
959 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]960 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]961 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]962const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]963 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]964 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]965{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]966 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]967
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]968 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]969 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]970 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]971 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]972 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
973
974 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]975 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]976 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
977 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]978 state = HTTP_MSG_ERROR;
979 break;
980
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]981 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]982 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]983 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]984 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]985 goto http_msg_rpcode;
986 }
987 if (likely(HTTP_IS_SPHT(*ptr)))
988 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
989 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]990 state = HTTP_MSG_ERROR;
991 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]992
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]993 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]994 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]995 if (likely(!HTTP_IS_LWS(*ptr)))
996 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
997
998 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]999 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1000 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1001 }
1002
1003 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1004 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1005 http_msg_rsp_reason:
1006 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1007 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1008 msg->sl.st.r_l = 0;
1009 goto http_msg_rpline_eol;
1010
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1011 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1012 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1013 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1014 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1015 goto http_msg_rpreason;
1016 }
1017 if (likely(HTTP_IS_SPHT(*ptr)))
1018 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1019 /* so it's a CR/LF, so there is no reason phrase */
1020 goto http_msg_rsp_reason;
1021
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1022 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1023 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1024 if (likely(!HTTP_IS_CRLF(*ptr)))
1025 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1026 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1027 http_msg_rpline_eol:
1028 /* We have seen the end of line. Note that we do not
1029 * necessarily have the \n yet, but at least we know that we
1030 * have EITHER \r OR \n, otherwise the response would not be
1031 * complete. We can then record the response length and return
1032 * to the caller which will be able to register it.
1033 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1034 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1035 return ptr;
1036
1037#ifdef DEBUG_FULL
1038 default:
1039 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1040 exit(1);
1041#endif
1042 }
1043
1044 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1045 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1046 if (ret_state)
1047 *ret_state = state;
1048 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1049 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1050 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1051}
1052
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1053/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1054 * This function parses a request line between <ptr> and <end>, starting with
1055 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1056 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1057 * will give undefined results.
1058 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1059 * and that msg->sol points to the beginning of the request.
1060 * If a complete line is found (which implies that at least one CR or LF is
1061 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1062 * returned indicating an incomplete line (which does not mean that parts have
1063 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1064 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1065 * upon next call.
1066 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1067 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1068 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1069 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1070 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1071 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1072const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1073 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1074 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1075{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1076 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1077
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1078 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1079 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1080 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1081 if (likely(HTTP_IS_TOKEN(*ptr)))
1082 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1083
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1084 if (likely(HTTP_IS_SPHT(*ptr))) {
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 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1087 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1088
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1089 if (likely(HTTP_IS_CRLF(*ptr))) {
1090 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1091 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1092 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1093 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1094 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1095 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1096 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1097 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1098 msg->sl.rq.v_l = 0;
1099 goto http_msg_rqline_eol;
1100 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1101 state = HTTP_MSG_ERROR;
1102 break;
1103
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1104 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1105 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1106 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1107 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1108 goto http_msg_rquri;
1109 }
1110 if (likely(HTTP_IS_SPHT(*ptr)))
1111 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1112 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1113 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1114
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1115 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1116 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1117 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1118 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1119
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1120 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1121 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1122 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1123 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1124
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1125 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1126 /* non-ASCII chars are forbidden unless option
1127 * accept-invalid-http-request is enabled in the frontend.
1128 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1129 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1130 if (msg->err_pos < -1)
1131 goto invalid_char;
1132 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1133 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1134 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1135 }
1136
1137 if (likely(HTTP_IS_CRLF(*ptr))) {
1138 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1139 goto http_msg_req09_uri_e;
1140 }
1141
1142 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1143 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1144 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1145 state = HTTP_MSG_ERROR;
1146 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1147
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1148 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1149 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1150 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1151 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1152 goto http_msg_rqver;
1153 }
1154 if (likely(HTTP_IS_SPHT(*ptr)))
1155 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1156 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1157 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1158
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1159 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1160 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1161 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1162 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1163
1164 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1165 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1166 http_msg_rqline_eol:
1167 /* We have seen the end of line. Note that we do not
1168 * necessarily have the \n yet, but at least we know that we
1169 * have EITHER \r OR \n, otherwise the request would not be
1170 * complete. We can then record the request length and return
1171 * to the caller which will be able to register it.
1172 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1173 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1174 return ptr;
1175 }
1176
1177 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1178 state = HTTP_MSG_ERROR;
1179 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1180
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1181#ifdef DEBUG_FULL
1182 default:
1183 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1184 exit(1);
1185#endif
1186 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1187
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1188 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1189 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1190 if (ret_state)
1191 *ret_state = state;
1192 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1193 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1194 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1195}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1196
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1197/*
1198 * Returns the data from Authorization header. Function may be called more
1199 * than once so data is stored in txn->auth_data. When no header is found
1200 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
1201 * searching again for something we are unable to find anyway.
1202 */
1203
1204char get_http_auth_buff[BUFSIZE];
1205
1206int
1207get_http_auth(struct session *s)
1208{
1209
1210 struct http_txn *txn = &s->txn;
1211 struct chunk auth_method;
1212 struct hdr_ctx ctx;
1213 char *h, *p;
1214 int len;
1215
1216#ifdef DEBUG_AUTH
1217 printf("Auth for session %p: %d\n", s, txn->auth.method);
1218#endif
1219
1220 if (txn->auth.method == HTTP_AUTH_WRONG)
1221 return 0;
1222
1223 if (txn->auth.method)
1224 return 1;
1225
1226 txn->auth.method = HTTP_AUTH_WRONG;
1227
1228 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1229
1230 if (txn->flags & TX_USE_PX_CONN) {
1231 h = "Proxy-Authorization";
1232 len = strlen(h);
1233 } else {
1234 h = "Authorization";
1235 len = strlen(h);
1236 }
1237
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1238 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]1239 return 0;
1240
1241 h = ctx.line + ctx.val;
1242
1243 p = memchr(h, ' ', ctx.vlen);
1244 if (!p || p == h)
1245 return 0;
1246
1247 chunk_initlen(&auth_method, h, 0, p-h);
1248 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1249
1250 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1251
1252 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
1253 get_http_auth_buff, BUFSIZE - 1);
1254
1255 if (len < 0)
1256 return 0;
1257
1258
1259 get_http_auth_buff[len] = '\0';
1260
1261 p = strchr(get_http_auth_buff, ':');
1262
1263 if (!p)
1264 return 0;
1265
1266 txn->auth.user = get_http_auth_buff;
1267 *p = '\0';
1268 txn->auth.pass = p+1;
1269
1270 txn->auth.method = HTTP_AUTH_BASIC;
1271 return 1;
1272 }
1273
1274 return 0;
1275}
1276
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1277
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1278/*
1279 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1280 * depending on the initial msg->msg_state. The caller is responsible for
1281 * ensuring that the message does not wrap. The function can be preempted
1282 * everywhere when data are missing and recalled at the exact same location
1283 * with no information loss. The message may even be realigned between two
1284 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1285 * 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]1286 * fields. Note that msg->sol will be initialized after completing the first
1287 * state, so that none of the msg pointers has to be initialized prior to the
1288 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1289 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1290void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1291{
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1292 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1293 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1294 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1295
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1296 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1297 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1298 ptr = buf->p + msg->next;
1299 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1300
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1301 if (unlikely(ptr >= end))
1302 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1303
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1304 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1305 /*
1306 * First, states that are specific to the response only.
1307 * We check them first so that request and headers are
1308 * closer to each other (accessed more often).
1309 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1310 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1311 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1312 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1313 /* we have a start of message, but we have to check
1314 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1315 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1316 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1317 if (unlikely(ptr != buf->p)) {
1318 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1319 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1320 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1321 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1322 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1323 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1324 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1325 hdr_idx_init(idx);
1326 state = HTTP_MSG_RPVER;
1327 goto http_msg_rpver;
1328 }
1329
1330 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1331 goto http_msg_invalid;
1332
1333 if (unlikely(*ptr == '\n'))
1334 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1335 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1336 /* stop here */
1337
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1338 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1339 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1340 EXPECT_LF_HERE(ptr, http_msg_invalid);
1341 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1342 /* stop here */
1343
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1344 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1345 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1346 case HTTP_MSG_RPVER_SP:
1347 case HTTP_MSG_RPCODE:
1348 case HTTP_MSG_RPCODE_SP:
1349 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1350 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1351 state, ptr, end,
1352 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1353 if (unlikely(!ptr))
1354 return;
1355
1356 /* we have a full response and we know that we have either a CR
1357 * or an LF at <ptr>.
1358 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1359 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1360
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1361 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1362 if (likely(*ptr == '\r'))
1363 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1364 goto http_msg_rpline_end;
1365
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1366 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1367 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1368 /* msg->sol must point to the first of CR or LF. */
1369 EXPECT_LF_HERE(ptr, http_msg_invalid);
1370 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1371 /* stop here */
1372
1373 /*
1374 * Second, states that are specific to the request only
1375 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1376 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1377 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1378 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1379 /* we have a start of message, but we have to check
1380 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1381 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1382 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1383 if (likely(ptr != buf->p)) {
1384 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1385 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1386 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1387 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1388 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1389 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1390 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1391 state = HTTP_MSG_RQMETH;
1392 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1393 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1394
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1395 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1396 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1397
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1398 if (unlikely(*ptr == '\n'))
1399 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1400 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
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_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1404 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1405 EXPECT_LF_HERE(ptr, http_msg_invalid);
1406 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1407 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1408
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1409 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1410 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1411 case HTTP_MSG_RQMETH_SP:
1412 case HTTP_MSG_RQURI:
1413 case HTTP_MSG_RQURI_SP:
1414 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1415 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1416 state, ptr, end,
1417 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1418 if (unlikely(!ptr))
1419 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1420
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1421 /* we have a full request and we know that we have either a CR
1422 * or an LF at <ptr>.
1423 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1424 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1425
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1426 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1427 if (likely(*ptr == '\r'))
1428 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1429 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1430
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1431 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1432 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1433 /* check for HTTP/0.9 request : no version information available.
1434 * msg->sol must point to the first of CR or LF.
1435 */
1436 if (unlikely(msg->sl.rq.v_l == 0))
1437 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1438
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1439 EXPECT_LF_HERE(ptr, http_msg_invalid);
1440 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1441 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1442
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1443 /*
1444 * Common states below
1445 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1446 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1447 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1448 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1449 if (likely(!HTTP_IS_CRLF(*ptr))) {
1450 goto http_msg_hdr_name;
1451 }
1452
1453 if (likely(*ptr == '\r'))
1454 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1455 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1456
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1457 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1458 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1459 /* assumes msg->sol points to the first char */
1460 if (likely(HTTP_IS_TOKEN(*ptr)))
1461 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1462
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1463 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1464 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]1465
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1466 if (likely(msg->err_pos < -1) || *ptr == '\n')
1467 goto http_msg_invalid;
1468
1469 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1470 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1471
1472 /* and we still accept this non-token character */
1473 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1474
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1475 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1476 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1477 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1478 if (likely(HTTP_IS_SPHT(*ptr)))
1479 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]1480
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1481 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1482 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1483
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1484 if (likely(!HTTP_IS_CRLF(*ptr))) {
1485 goto http_msg_hdr_val;
1486 }
1487
1488 if (likely(*ptr == '\r'))
1489 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1490 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1491
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1492 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1493 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1494 EXPECT_LF_HERE(ptr, http_msg_invalid);
1495 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]1496
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1497 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1498 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1499 if (likely(HTTP_IS_SPHT(*ptr))) {
1500 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1501 for (; buf->p + msg->sov < ptr; msg->sov++)
1502 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1503 goto http_msg_hdr_l1_sp;
1504 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1505 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1506 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1507 goto http_msg_complete_header;
1508
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1509 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1510 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1511 /* assumes msg->sol points to the first char, and msg->sov
1512 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1513 */
1514 if (likely(!HTTP_IS_CRLF(*ptr)))
1515 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1516
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1517 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1518 /* Note: we could also copy eol into ->eoh so that we have the
1519 * real header end in case it ends with lots of LWS, but is this
1520 * really needed ?
1521 */
1522 if (likely(*ptr == '\r'))
1523 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1524 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1525
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1526 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1527 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1528 EXPECT_LF_HERE(ptr, http_msg_invalid);
1529 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]1530
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1531 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1532 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1533 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1534 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1535 for (; buf->p + msg->eol < ptr; msg->eol++)
1536 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1537 goto http_msg_hdr_val;
1538 }
1539 http_msg_complete_header:
1540 /*
1541 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1542 * Assumes msg->sol points to the first char, msg->sov points
1543 * to the first character of the value and msg->eol to the
1544 * first CR or LF so we know how the line ends. We insert last
1545 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1546 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1547 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1548 idx, idx->tail) < 0))
1549 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1550
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1551 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1552 if (likely(!HTTP_IS_CRLF(*ptr))) {
1553 goto http_msg_hdr_name;
1554 }
1555
1556 if (likely(*ptr == '\r'))
1557 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1558 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1559
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1560 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1561 http_msg_last_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1562 /* Assumes msg->sol points to the first of either CR or LF */
1563 EXPECT_LF_HERE(ptr, http_msg_invalid);
1564 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1565 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1566 msg->eoh = msg->sol;
1567 msg->sol = 0;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1568 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1569 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1570
1571 case HTTP_MSG_ERROR:
1572 /* this may only happen if we call http_msg_analyser() twice with an error */
1573 break;
1574
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1575#ifdef DEBUG_FULL
1576 default:
1577 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1578 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1579#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1580 }
1581 http_msg_ood:
1582 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1583 msg->msg_state = state;
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;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1586
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1587 http_msg_invalid:
1588 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1589 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1590 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1591 return;
1592}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1593
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1594/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1595 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1596 * nothing is done and 1 is returned.
1597 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1598static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1599{
1600 int delta;
1601 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1602 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1603
1604 if (msg->sl.rq.v_l != 0)
1605 return 1;
1606
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1607 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1608 delta = 0;
1609
1610 if (msg->sl.rq.u_l == 0) {
1611 /* if no URI was set, add "/" */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1612 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " /", 2);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1613 cur_end += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1614 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1615 }
1616 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1617 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]1618 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1619 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1620 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1621 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1622 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1623 NULL, NULL);
1624 if (unlikely(!cur_end))
1625 return 0;
1626
1627 /* we have a full HTTP/1.0 request now and we know that
1628 * we have either a CR or an LF at <ptr>.
1629 */
1630 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1631 return 1;
1632}
1633
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1634/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1635 * and "keep-alive" values. If we already know that some headers may safely
1636 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1637 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1638 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
1639 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1640 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1641 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1642 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1643 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1644void 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]1645{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1646 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1647 const char *hdr_val = "Connection";
1648 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1649
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1650 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1651 return;
1652
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1653 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1654 hdr_val = "Proxy-Connection";
1655 hdr_len = 16;
1656 }
1657
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1658 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1659 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1660 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]1661 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1662 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1663 if (to_del & 2)
1664 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1665 else
1666 txn->flags |= TX_CON_KAL_SET;
1667 }
1668 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1669 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1670 if (to_del & 1)
1671 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1672 else
1673 txn->flags |= TX_CON_CLO_SET;
1674 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1675 }
1676
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1677 txn->flags |= TX_HDR_CONN_PRS;
1678 return;
1679}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1680
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1681/* Apply desired changes on the Connection: header. Values may be removed and/or
1682 * added depending on the <wanted> flags, which are exclusively composed of
1683 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1684 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1685 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1686void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1687{
1688 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1689 const char *hdr_val = "Connection";
1690 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1691
1692 ctx.idx = 0;
1693
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1694
1695 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1696 hdr_val = "Proxy-Connection";
1697 hdr_len = 16;
1698 }
1699
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1700 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1701 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]1702 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1703 if (wanted & TX_CON_KAL_SET)
1704 txn->flags |= TX_CON_KAL_SET;
1705 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1706 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1707 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1708 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1709 if (wanted & TX_CON_CLO_SET)
1710 txn->flags |= TX_CON_CLO_SET;
1711 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1712 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1713 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1714 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1715
1716 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1717 return;
1718
1719 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1720 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1721 hdr_val = "Connection: close";
1722 hdr_len = 17;
1723 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1724 hdr_val = "Proxy-Connection: close";
1725 hdr_len = 23;
1726 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1727 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1728 }
1729
1730 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1731 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1732 hdr_val = "Connection: keep-alive";
1733 hdr_len = 22;
1734 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1735 hdr_val = "Proxy-Connection: keep-alive";
1736 hdr_len = 28;
1737 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1738 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1739 }
1740 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1741}
1742
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1743/* 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]1744 * first byte of body, and increments msg->sov by the number of bytes parsed,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1745 * so that we know we can forward between ->sol and ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1746 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1747 * 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]1748 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1749static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1750{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1751 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1752 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1753 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1754 const char *end = buf->data + buf->size;
1755 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1756 unsigned int chunk = 0;
1757
1758 /* The chunk size is in the following form, though we are only
1759 * interested in the size and CRLF :
1760 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1761 */
1762 while (1) {
1763 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1764 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1765 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1766 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1767 if (c < 0) /* not a hex digit anymore */
1768 break;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1769 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1770 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1771 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1772 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1773 chunk = (chunk << 4) + c;
1774 }
1775
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1776 /* empty size not allowed */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1777 if (ptr == ptr_old)
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1778 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1779
1780 while (http_is_spht[(unsigned char)*ptr]) {
1781 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1782 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1783 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1784 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1785 }
1786
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1787 /* Up to there, we know that at least one byte is present at *ptr. Check
1788 * for the end of chunk size.
1789 */
1790 while (1) {
1791 if (likely(HTTP_IS_CRLF(*ptr))) {
1792 /* we now have a CR or an LF at ptr */
1793 if (likely(*ptr == '\r')) {
1794 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1795 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1796 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1797 return 0;
1798 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1799
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1800 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1801 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1802 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1803 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1804 /* done */
1805 break;
1806 }
1807 else if (*ptr == ';') {
1808 /* chunk extension, ends at next CRLF */
1809 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1810 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1811 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1812 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1813
1814 while (!HTTP_IS_CRLF(*ptr)) {
1815 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1816 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1817 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1818 return 0;
1819 }
1820 /* we have a CRLF now, loop above */
1821 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1822 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1823 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1824 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1825 }
1826
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1827 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1828 * which may or may not be present. We save that into ->next and
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1829 * ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1830 */
Willy Tarreaub8ffd372012-09-27 15:08:56 +0200[diff] [blame]1831 if (ptr < ptr_old)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1832 msg->sov += buf->size;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1833 msg->sov += ptr - ptr_old;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1834 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]1835 msg->chunk_len = chunk;
1836 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1837 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1838 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1839 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1840 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1841 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1842}
1843
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1844/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1845 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1846 * the trailers is found, it is automatically scheduled to be forwarded,
1847 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
1848 * If not enough data are available, the function does not change anything
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1849 * 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]1850 * zero. If a parse error is encountered, the function returns < 0 and does not
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1851 * change anything except maybe msg->next and msg->sov. Note that the message
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1852 * must already be in HTTP_MSG_TRAILERS state before calling this function,
1853 * which implies that all non-trailers data have already been scheduled for
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1854 * forwarding, and that the difference between msg->sol and msg->sov exactly
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1855 * matches the length of trailers already parsed and not forwarded. It is also
1856 * important to note that this function is designed to be able to parse wrapped
1857 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1858 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1859static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1860{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1861 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1862
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1863 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1864 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1865 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1866 const char *ptr = b_ptr(buf, msg->next);
1867 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1868 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1869
1870 /* scan current line and stop at LF or CRLF */
1871 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1872 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1873 return 0;
1874
1875 if (*ptr == '\n') {
1876 if (!p1)
1877 p1 = ptr;
1878 p2 = ptr;
1879 break;
1880 }
1881
1882 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1883 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1884 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1885 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1886 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1887 p1 = ptr;
1888 }
1889
1890 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1891 if (ptr >= buf->data + buf->size)
1892 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1893 }
1894
1895 /* after LF; point to beginning of next line */
1896 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1897 if (p2 >= buf->data + buf->size)
1898 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1899
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1900 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1901 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1902 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1903
1904 /* schedule this line for forwarding */
1905 msg->sov += bytes;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1906 if (msg->sov >= buf->size)
1907 msg->sov -= buf->size;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1908
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1909 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1910 /* LF/CRLF at beginning of line => end of trailers at p2.
1911 * Everything was scheduled for forwarding, there's nothing
1912 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]1913 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1914 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1915 msg->msg_state = HTTP_MSG_DONE;
1916 return 1;
1917 }
1918 /* OK, next line then */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1919 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1920 }
1921}
1922
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]1923/* 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]1924 * 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]1925 * ->sol, ->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1926 * 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]1927 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
1928 * not enough data are available, the function does not change anything and
1929 * returns zero. If a parse error is encountered, the function returns < 0 and
1930 * does not change anything. Note: this function is designed to parse wrapped
1931 * CRLF at the end of the buffer.
1932 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1933static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1934{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1935 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1936 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1937 int bytes;
1938
1939 /* NB: we'll check data availabilty at the end. It's not a
1940 * problem because whatever we match first will be checked
1941 * against the correct length.
1942 */
1943 bytes = 1;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1944 ptr = buf->p;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1945 if (*ptr == '\r') {
1946 bytes++;
1947 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1948 if (ptr >= buf->data + buf->size)
1949 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1950 }
1951
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1952 if (bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1953 return 0;
1954
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1955 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1956 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1957 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1958 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1959
1960 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1961 if (ptr >= buf->data + buf->size)
1962 ptr = buf->data;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1963 /* prepare the CRLF to be forwarded (between ->sol and ->sov) */
1964 msg->sol = 0;
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1965 msg->sov = msg->next = bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1966 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
1967 return 1;
1968}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1969
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1970
1971/*
1972 * Selects a compression algorithm depending on the client request.
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1973 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1974int select_compression_request_header(struct session *s, struct buffer *req)
1975{
1976 struct http_txn *txn = &s->txn;
1977 struct hdr_ctx ctx;
1978 struct comp_algo *comp_algo = NULL;
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]1979 struct comp_algo *comp_algo_back = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1980
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1981 /* Disable compression for older user agents announcing themselves as "Mozilla/4".
1982 * Note all of them are broken but they are very few and the broken ones are there.
1983 * See http://zoompf.com/2012/02/lose-the-wait-http-compression for more details.
1984 */
1985 ctx.idx = 0;
1986 if (http_find_header2("User-Agent", 10, req->p, &txn->hdr_idx, &ctx) &&
1987 ctx.vlen >= 9 &&
1988 memcmp(ctx.line + ctx.val, "Mozilla/4", 9) == 0) {
1989 s->comp_algo = NULL;
1990 return 0;
1991 }
1992
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1993 ctx.idx = 0;
1994 /* no compression when Cache-Control: no-transform found */
1995 while (http_find_header2("Cache-Control", 13, req->p, &txn->hdr_idx, &ctx)) {
1996 if (word_match(ctx.line + ctx.val, ctx.vlen, "no-transform", 12)) {
1997 s->comp_algo = NULL;
1998 return 0;
1999 }
2000 }
2001
2002 /* search for the algo in the backend in priority or the frontend */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2003 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]2004 ctx.idx = 0;
2005 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2006 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2007 if (word_match(ctx.line + ctx.val, ctx.vlen, comp_algo->name, comp_algo->name_len)) {
2008 s->comp_algo = comp_algo;
2009 return 1;
2010 }
2011 }
2012 }
2013 }
2014
2015 /* identity is implicit does not require headers */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2016 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
2017 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2018 if (comp_algo->add_data == identity_add_data) {
2019 s->comp_algo = comp_algo;
2020 return 1;
2021 }
2022 }
2023 }
2024
2025 s->comp_algo = NULL;
2026
2027 return 0;
2028}
2029
2030/*
2031 * Selects a comression algorithm depending of the server response.
2032 */
2033int select_compression_response_header(struct session *s, struct buffer *res)
2034{
2035 struct http_txn *txn = &s->txn;
2036 struct http_msg *msg = &txn->rsp;
2037 struct hdr_ctx ctx;
2038 struct comp_type *comp_type;
2039 char *hdr_val;
2040 int hdr_len;
2041
2042 /* no common compression algorithm was found in request header */
2043 if (s->comp_algo == NULL)
2044 goto fail;
2045
2046 /* HTTP < 1.1 should not be compressed */
2047 if (!(msg->flags & HTTP_MSGF_VER_11))
2048 goto fail;
2049
2050 hdr_val = trash;
2051 ctx.idx = 0;
2052
2053 /* Content-Length is null */
2054 if (!(msg->flags & HTTP_MSGF_TE_CHNK) && msg->body_len == 0)
2055 goto fail;
2056
2057 /* content is already compressed */
2058 if (http_find_header2("Content-Encoding", 16, res->p, &txn->hdr_idx, &ctx))
2059 goto fail;
2060
2061 comp_type = NULL;
2062
2063 /* if there was a compression content-type option in the backend or the frontend
2064 * The backend have priority.
2065 */
2066 if ((s->be->comp && (comp_type = s->be->comp->types)) || (s->fe->comp && (comp_type = s->fe->comp->types))) {
2067 if (http_find_header2("Content-Type", 12, res->p, &txn->hdr_idx, &ctx)) {
2068 for (; comp_type; comp_type = comp_type->next) {
2069 if (strncmp(ctx.line+ctx.val, comp_type->name, comp_type->name_len) == 0)
2070 /* this Content-Type should be compressed */
2071 break;
2072 }
2073 }
2074 /* this Content-Type should not be compressed */
2075 if (comp_type == NULL)
2076 goto fail;
2077 }
2078
2079 ctx.idx = 0;
2080
2081 /* remove Content-Length header */
2082 if ((msg->flags & HTTP_MSGF_CNT_LEN) && http_find_header2("Content-Length", 14, res->p, &txn->hdr_idx, &ctx))
2083 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2084
2085 /* add Transfer-Encoding header */
2086 if (!(msg->flags & HTTP_MSGF_TE_CHNK))
2087 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, "Transfer-Encoding: chunked", 26);
2088
2089 /*
2090 * Add Content-Encoding header when it's not identity encoding.
2091 * RFC 2616 : Identity encoding: This content-coding is used only in the
2092 * Accept-Encoding header, and SHOULD NOT be used in the Content-Encoding
2093 * header.
2094 */
2095 if (s->comp_algo->add_data != identity_add_data) {
2096 hdr_len = 18;
2097 memcpy(hdr_val, "Content-Encoding: ", hdr_len);
2098 memcpy(hdr_val + hdr_len, s->comp_algo->name, s->comp_algo->name_len);
2099 hdr_len += s->comp_algo->name_len;
2100 hdr_val[hdr_len] = '\0';
2101 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, hdr_val, hdr_len);
2102 }
2103
2104 /* initialize compression */
2105 if (s->comp_algo->init(&s->comp_ctx.strm, 1) < 0)
2106 goto fail;
2107
2108 return 1;
2109
2110fail:
2111 if (s->comp_algo) {
2112 s->comp_algo->end(&s->comp_ctx.strm);
2113 s->comp_algo = NULL;
2114 }
2115 return 0;
2116}
2117
2118
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2119/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2120 * processing can continue on next analysers, or zero if it either needs more
2121 * data or wants to immediately abort the request (eg: timeout, error, ...). It
2122 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
2123 * when it has nothing left to do, and may remove any analyser when it wants to
2124 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2125 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2126int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2127{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2128 /*
2129 * We will parse the partial (or complete) lines.
2130 * We will check the request syntax, and also join multi-line
2131 * headers. An index of all the lines will be elaborated while
2132 * parsing.
2133 *
2134 * For the parsing, we use a 28 states FSM.
2135 *
2136 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2137 * req->buf->p = beginning of request
2138 * req->buf->p + msg->eoh = end of processed headers / start of current one
2139 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2140 * msg->eol = end of current header or line (LF or CRLF)
2141 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2142 *
2143 * At end of parsing, we may perform a capture of the error (if any), and
2144 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
2145 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2146 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2147 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2148
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2149 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2150 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2151 struct http_txn *txn = &s->txn;
2152 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2153 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2154
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2155 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]2156 now_ms, __FUNCTION__,
2157 s,
2158 req,
2159 req->rex, req->wex,
2160 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2161 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2162 req->analysers);
2163
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2164 /* we're speaking HTTP here, so let's speak HTTP to the client */
2165 s->srv_error = http_return_srv_error;
2166
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2167 /* There's a protected area at the end of the buffer for rewriting
2168 * purposes. We don't want to start to parse the request if the
2169 * protected area is affected, because we may have to move processed
2170 * data later, which is much more complicated.
2171 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2172 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2173 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2174 unlikely(channel_full(req) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2175 bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2176 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite)) {
2177 if (req->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2178 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2179 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2180 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2181 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2182 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2183 return 0;
2184 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2185 if (bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2186 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite)
2187 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2188 }
2189
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2190 /* Note that we have the same problem with the response ; we
2191 * may want to send a redirect, error or anything which requires
2192 * some spare space. So we'll ensure that we have at least
2193 * maxrewrite bytes available in the response buffer before
2194 * processing that one. This will only affect pipelined
2195 * keep-alive requests.
2196 */
2197 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2198 unlikely(channel_full(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2199 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2200 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2201 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2202 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]2203 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2204 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2205 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2206 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2207 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2208 return 0;
2209 }
2210 }
2211
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2212 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2213 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2214 }
2215
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2216 /* 1: we might have to print this header in debug mode */
2217 if (unlikely((global.mode & MODE_DEBUG) &&
2218 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2219 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2220 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2221
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2222 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2223 /* this is a bit complex : in case of error on the request line,
2224 * we know that rq.l is still zero, so we display only the part
2225 * up to the end of the line (truncated by debug_hdr).
2226 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2227 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2228 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2229
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2230 sol += hdr_idx_first_pos(&txn->hdr_idx);
2231 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2232
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2233 while (cur_idx) {
2234 eol = sol + txn->hdr_idx.v[cur_idx].len;
2235 debug_hdr("clihdr", s, sol, eol);
2236 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2237 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2238 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2239 }
2240
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2241
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2242 /*
2243 * Now we quickly check if we have found a full valid request.
2244 * If not so, we check the FD and buffer states before leaving.
2245 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2246 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2247 * requests are checked first. When waiting for a second request
2248 * on a keep-alive session, if we encounter and error, close, t/o,
2249 * we note the error in the session flags but don't set any state.
2250 * Since the error will be noted there, it will not be counted by
2251 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2252 * Last, we may increase some tracked counters' http request errors on
2253 * the cases that are deliberately the client's fault. For instance,
2254 * a timeout or connection reset is not counted as an error. However
2255 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2256 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2257
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2258 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2259 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2260 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2261 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2262 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2263 session_inc_http_req_ctr(s);
2264 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2265 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2266 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2267 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2268
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2269 /* 1: Since we are in header mode, if there's no space
2270 * left for headers, we won't be able to free more
2271 * later, so the session will never terminate. We
2272 * must terminate it now.
2273 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2274 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2275 /* FIXME: check if URI is set and return Status
2276 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2277 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2278 session_inc_http_req_ctr(s);
2279 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2280 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2281 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2282 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2283 goto return_bad_req;
2284 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2285
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2286 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2287 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2288 if (!(s->flags & SN_ERR_MASK))
2289 s->flags |= SN_ERR_CLICL;
2290
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2291 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2292 goto failed_keep_alive;
2293
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2294 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2295 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2296 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]2297 session_inc_http_err_ctr(s);
2298 }
2299
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2300 msg->msg_state = HTTP_MSG_ERROR;
2301 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2302
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2303 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2304 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2305 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2306 if (s->listener->counters)
2307 s->listener->counters->failed_req++;
2308
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2309 if (!(s->flags & SN_FINST_MASK))
2310 s->flags |= SN_FINST_R;
2311 return 0;
2312 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2313
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2314 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2315 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]2316 if (!(s->flags & SN_ERR_MASK))
2317 s->flags |= SN_ERR_CLITO;
2318
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2319 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2320 goto failed_keep_alive;
2321
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2322 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2323 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2324 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]2325 session_inc_http_err_ctr(s);
2326 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2327 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2328 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2329 msg->msg_state = HTTP_MSG_ERROR;
2330 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2331
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2332 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2333 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2334 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2335 if (s->listener->counters)
2336 s->listener->counters->failed_req++;
2337
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2338 if (!(s->flags & SN_FINST_MASK))
2339 s->flags |= SN_FINST_R;
2340 return 0;
2341 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2342
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2343 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2344 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2345 if (!(s->flags & SN_ERR_MASK))
2346 s->flags |= SN_ERR_CLICL;
2347
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2348 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2349 goto failed_keep_alive;
2350
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2351 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2352 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]2353 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2354 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2355 msg->msg_state = HTTP_MSG_ERROR;
2356 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2357
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2358 session_inc_http_err_ctr(s);
2359 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2360 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2361 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2362 if (s->listener->counters)
2363 s->listener->counters->failed_req++;
2364
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2365 if (!(s->flags & SN_FINST_MASK))
2366 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2367 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2368 }
2369
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2370 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2371 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2372 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2373#ifdef TCP_QUICKACK
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2374 if (s->listener->options & LI_O_NOQUICKACK && req->buf->i) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2375 /* We need more data, we have to re-enable quick-ack in case we
2376 * previously disabled it, otherwise we might cause the client
2377 * to delay next data.
2378 */
Willy Tarreaufb7508a2012-05-21 16:47:54 +0200[diff] [blame]2379 setsockopt(si_fd(&s->si[0]), IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2380 }
2381#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2382
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2383 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2384 /* If the client starts to talk, let's fall back to
2385 * request timeout processing.
2386 */
2387 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2388 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2389 }
2390
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2391 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2392 if (!tick_isset(req->analyse_exp)) {
2393 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2394 (txn->flags & TX_WAIT_NEXT_RQ) &&
2395 tick_isset(s->be->timeout.httpka))
2396 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2397 else
2398 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2399 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2400
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2401 /* we're not ready yet */
2402 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2403
2404 failed_keep_alive:
2405 /* Here we process low-level errors for keep-alive requests. In
2406 * short, if the request is not the first one and it experiences
2407 * a timeout, read error or shutdown, we just silently close so
2408 * that the client can try again.
2409 */
2410 txn->status = 0;
2411 msg->msg_state = HTTP_MSG_RQBEFORE;
2412 req->analysers = 0;
2413 s->logs.logwait = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2414 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2415 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2416 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2417 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2418
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2419 /* OK now we have a complete HTTP request with indexed headers. Let's
2420 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2421 * 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]2422 * 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]2423 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2424 * byte after the last LF. msg->sov points to the first byte of data.
2425 * msg->eol cannot be trusted because it may have been left uninitialized
2426 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2427 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2428
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2429 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2430 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2431
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2432 if (txn->flags & TX_WAIT_NEXT_RQ) {
2433 /* kill the pending keep-alive timeout */
2434 txn->flags &= ~TX_WAIT_NEXT_RQ;
2435 req->analyse_exp = TICK_ETERNITY;
2436 }
2437
2438
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2439 /* Maybe we found in invalid header name while we were configured not
2440 * to block on that, so we have to capture it now.
2441 */
2442 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2443 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]2444
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2445 /*
2446 * 1: identify the method
2447 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2448 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2449
2450 /* we can make use of server redirect on GET and HEAD */
2451 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2452 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2453
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2454 /*
2455 * 2: check if the URI matches the monitor_uri.
2456 * We have to do this for every request which gets in, because
2457 * the monitor-uri is defined by the frontend.
2458 */
2459 if (unlikely((s->fe->monitor_uri_len != 0) &&
2460 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2461 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2462 s->fe->monitor_uri,
2463 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2464 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2465 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2466 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2467 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2468
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2469 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2470 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2471
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2472 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2473 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2474 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]2475
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2476 ret = acl_pass(ret);
2477 if (cond->pol == ACL_COND_UNLESS)
2478 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2479
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2480 if (ret) {
2481 /* we fail this request, let's return 503 service unavail */
2482 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2483 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2484 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2485 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2486 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2487
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2488 /* nothing to fail, let's reply normaly */
2489 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2490 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2491 goto return_prx_cond;
2492 }
2493
2494 /*
2495 * 3: Maybe we have to copy the original REQURI for the logs ?
2496 * Note: we cannot log anymore if the request has been
2497 * classified as invalid.
2498 */
2499 if (unlikely(s->logs.logwait & LW_REQ)) {
2500 /* we have a complete HTTP request that we must log */
2501 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2502 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2503
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2504 if (urilen >= REQURI_LEN)
2505 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2506 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2507 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2508
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2509 if (!(s->logs.logwait &= ~LW_REQ))
2510 s->do_log(s);
2511 } else {
2512 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2513 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2514 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2515
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]2516 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
2517 s->unique_id = pool_alloc2(pool2_uniqueid);
2518 }
2519
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2520 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2521 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2522 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2523
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2524 /* ... and check if the request is HTTP/1.1 or above */
2525 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2526 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2527 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2528 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2529 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2530
2531 /* "connection" has not been parsed yet */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2532 txn->flags &= ~(TX_HDR_CONN_PRS | TX_HDR_CONN_CLO | TX_HDR_CONN_KAL);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2533
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2534 /* if the frontend has "option http-use-proxy-header", we'll check if
2535 * we have what looks like a proxied connection instead of a connection,
2536 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2537 * Note that this is *not* RFC-compliant, however browsers and proxies
2538 * happen to do that despite being non-standard :-(
2539 * We consider that a request not beginning with either '/' or '*' is
2540 * a proxied connection, which covers both "scheme://location" and
2541 * CONNECT ip:port.
2542 */
2543 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2544 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2545 txn->flags |= TX_USE_PX_CONN;
2546
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2547 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2548 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2549
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2550 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2551 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2552 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2553 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2554
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2555 /* 6: determine the transfer-length.
2556 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2557 * the presence of a message-body in a REQUEST and its transfer length
2558 * must be determined that way (in order of precedence) :
2559 * 1. The presence of a message-body in a request is signaled by the
2560 * inclusion of a Content-Length or Transfer-Encoding header field
2561 * in the request's header fields. When a request message contains
2562 * both a message-body of non-zero length and a method that does
2563 * not define any semantics for that request message-body, then an
2564 * origin server SHOULD either ignore the message-body or respond
2565 * with an appropriate error message (e.g., 413). A proxy or
2566 * gateway, when presented the same request, SHOULD either forward
2567 * the request inbound with the message- body or ignore the
2568 * message-body when determining a response.
2569 *
2570 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2571 * and the "chunked" transfer-coding (Section 6.2) is used, the
2572 * transfer-length is defined by the use of this transfer-coding.
2573 * If a Transfer-Encoding header field is present and the "chunked"
2574 * transfer-coding is not present, the transfer-length is defined
2575 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2576 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2577 * 3. If a Content-Length header field is present, its decimal value in
2578 * OCTETs represents both the entity-length and the transfer-length.
2579 * If a message is received with both a Transfer-Encoding header
2580 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2581 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2582 * 4. By the server closing the connection. (Closing the connection
2583 * cannot be used to indicate the end of a request body, since that
2584 * would leave no possibility for the server to send back a response.)
2585 *
2586 * Whenever a transfer-coding is applied to a message-body, the set of
2587 * transfer-codings MUST include "chunked", unless the message indicates
2588 * it is terminated by closing the connection. When the "chunked"
2589 * transfer-coding is used, it MUST be the last transfer-coding applied
2590 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2591 */
2592
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2593 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2594 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2595 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2596 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2597 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2598 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2599 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2600 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2601 /* bad transfer-encoding (chunked followed by something else) */
2602 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2603 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2604 break;
2605 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2606 }
2607
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2608 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2609 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2610 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2611 signed long long cl;
2612
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2613 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2614 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2615 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2616 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2617
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2618 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2619 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2620 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2621 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2622
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2623 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2624 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2625 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2626 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2627
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2628 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2629 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2630 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2631 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2632
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2633 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2634 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2635 }
2636
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2637 /* bodyless requests have a known length */
2638 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2639 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2640
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2641 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2642 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2643 req->analyse_exp = TICK_ETERNITY;
2644 return 1;
2645
2646 return_bad_req:
2647 /* We centralize bad requests processing here */
2648 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2649 /* we detected a parsing error. We want to archive this request
2650 * in the dedicated proxy area for later troubleshooting.
2651 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2652 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]2653 }
2654
2655 txn->req.msg_state = HTTP_MSG_ERROR;
2656 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2657 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2658
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2659 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2660 if (s->listener->counters)
2661 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2662
2663 return_prx_cond:
2664 if (!(s->flags & SN_ERR_MASK))
2665 s->flags |= SN_ERR_PRXCOND;
2666 if (!(s->flags & SN_FINST_MASK))
2667 s->flags |= SN_FINST_R;
2668
2669 req->analysers = 0;
2670 req->analyse_exp = TICK_ETERNITY;
2671 return 0;
2672}
2673
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2674/* We reached the stats page through a POST request.
2675 * Parse the posted data and enable/disable servers if necessary.
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2676 * Returns 1 if request was parsed or zero if it needs more data.
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2677 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2678int 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]2679{
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2680 struct proxy *px = NULL;
2681 struct server *sv = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2682
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2683 char key[LINESIZE];
2684 int action = ST_ADM_ACTION_NONE;
2685 int reprocess = 0;
2686
2687 int total_servers = 0;
2688 int altered_servers = 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2689
2690 char *first_param, *cur_param, *next_param, *end_params;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]2691 char *st_cur_param = NULL;
2692 char *st_next_param = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2693
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2694 first_param = req->buf->p + txn->req.eoh + 2;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2695 end_params = first_param + txn->req.body_len;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2696
2697 cur_param = next_param = end_params;
2698
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2699 if (end_params >= req->buf->data + req->buf->size - global.tune.maxrewrite) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2700 /* Prevent buffer overflow */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2701 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2702 return 1;
2703 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2704 else if (end_params > req->buf->p + req->buf->i) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2705 /* we need more data */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2706 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2707 return 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2708 }
2709
2710 *end_params = '\0';
2711
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2712 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2713
2714 /*
2715 * Parse the parameters in reverse order to only store the last value.
2716 * From the html form, the backend and the action are at the end.
2717 */
2718 while (cur_param > first_param) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2719 char *value;
2720 int poffset, plen;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2721
2722 cur_param--;
2723 if ((*cur_param == '&') || (cur_param == first_param)) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2724 reprocess_servers:
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2725 /* Parse the key */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2726 poffset = (cur_param != first_param ? 1 : 0);
2727 plen = next_param - cur_param + (cur_param == first_param ? 1 : 0);
2728 if ((plen > 0) && (plen <= sizeof(key))) {
2729 strncpy(key, cur_param + poffset, plen);
2730 key[plen - 1] = '\0';
2731 } else {
2732 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
2733 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2734 }
2735
2736 /* Parse the value */
2737 value = key;
2738 while (*value != '\0' && *value != '=') {
2739 value++;
2740 }
2741 if (*value == '=') {
2742 /* Ok, a value is found, we can mark the end of the key */
2743 *value++ = '\0';
2744 }
2745
Willy Tarreaubf9c2fc2011-05-31 18:06:18 +0200[diff] [blame]2746 if (!url_decode(key) || !url_decode(value))
2747 break;
2748
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2749 /* Now we can check the key to see what to do */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2750 if (!px && (strcmp(key, "b") == 0)) {
2751 if ((px = findproxy(value, PR_CAP_BE)) == NULL) {
2752 /* the backend name is unknown or ambiguous (duplicate names) */
2753 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2754 goto out;
2755 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2756 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2757 else if (!action && (strcmp(key, "action") == 0)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2758 if (strcmp(value, "disable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2759 action = ST_ADM_ACTION_DISABLE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2760 }
2761 else if (strcmp(value, "enable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2762 action = ST_ADM_ACTION_ENABLE;
2763 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2764 else if (strcmp(value, "stop") == 0) {
2765 action = ST_ADM_ACTION_STOP;
2766 }
2767 else if (strcmp(value, "start") == 0) {
2768 action = ST_ADM_ACTION_START;
2769 }
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2770 else if (strcmp(value, "shutdown") == 0) {
2771 action = ST_ADM_ACTION_SHUTDOWN;
2772 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2773 else {
2774 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2775 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2776 }
2777 }
2778 else if (strcmp(key, "s") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2779 if (!(px && action)) {
2780 /*
2781 * Indicates that we'll need to reprocess the parameters
2782 * as soon as backend and action are known
2783 */
2784 if (!reprocess) {
2785 st_cur_param = cur_param;
2786 st_next_param = next_param;
2787 }
2788 reprocess = 1;
2789 }
2790 else if ((sv = findserver(px, value)) != NULL) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2791 switch (action) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2792 case ST_ADM_ACTION_DISABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2793 if ((px->state != PR_STSTOPPED) && !(sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2794 /* Not already in maintenance, we can change the server state */
2795 sv->state |= SRV_MAINTAIN;
2796 set_server_down(sv);
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2797 altered_servers++;
2798 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2799 }
2800 break;
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2801 case ST_ADM_ACTION_ENABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2802 if ((px->state != PR_STSTOPPED) && (sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2803 /* Already in maintenance, we can change the server state */
2804 set_server_up(sv);
Willy Tarreau70461302010-10-22 14:39:02 +0200[diff] [blame]2805 sv->health = sv->rise; /* up, but will fall down at first failure */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2806 altered_servers++;
2807 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2808 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2809 break;
2810 case ST_ADM_ACTION_STOP:
2811 case ST_ADM_ACTION_START:
2812 if (action == ST_ADM_ACTION_START)
2813 sv->uweight = sv->iweight;
2814 else
2815 sv->uweight = 0;
2816
2817 if (px->lbprm.algo & BE_LB_PROP_DYN) {
2818 /* we must take care of not pushing the server to full throttle during slow starts */
2819 if ((sv->state & SRV_WARMINGUP) && (px->lbprm.algo & BE_LB_PROP_DYN))
2820 sv->eweight = (BE_WEIGHT_SCALE * (now.tv_sec - sv->last_change) + sv->slowstart - 1) / sv->slowstart;
2821 else
2822 sv->eweight = BE_WEIGHT_SCALE;
2823 sv->eweight *= sv->uweight;
2824 } else {
2825 sv->eweight = sv->uweight;
2826 }
2827
2828 /* static LB algorithms are a bit harder to update */
2829 if (px->lbprm.update_server_eweight)
2830 px->lbprm.update_server_eweight(sv);
2831 else if (sv->eweight) {
2832 if (px->lbprm.set_server_status_up)
2833 px->lbprm.set_server_status_up(sv);
2834 }
2835 else {
2836 if (px->lbprm.set_server_status_down)
2837 px->lbprm.set_server_status_down(sv);
2838 }
2839 altered_servers++;
2840 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2841 break;
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2842 case ST_ADM_ACTION_SHUTDOWN:
2843 if (px->state != PR_STSTOPPED) {
2844 struct session *sess, *sess_bck;
2845
2846 list_for_each_entry_safe(sess, sess_bck, &sv->actconns, by_srv)
2847 if (sess->srv_conn == sv)
2848 session_shutdown(sess, SN_ERR_KILLED);
2849
2850 altered_servers++;
2851 total_servers++;
2852 }
2853 break;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2854 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2855 } else {
2856 /* the server name is unknown or ambiguous (duplicate names) */
2857 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2858 }
2859 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2860 if (reprocess && px && action) {
2861 /* Now, we know the backend and the action chosen by the user.
2862 * We can safely restart from the first server parameter
2863 * to reprocess them
2864 */
2865 cur_param = st_cur_param;
2866 next_param = st_next_param;
2867 reprocess = 0;
2868 goto reprocess_servers;
2869 }
2870
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2871 next_param = cur_param;
2872 }
2873 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2874
2875 if (total_servers == 0) {
2876 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
2877 }
2878 else if (altered_servers == 0) {
2879 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2880 }
2881 else if (altered_servers == total_servers) {
2882 si->applet.ctx.stats.st_code = STAT_STATUS_DONE;
2883 }
2884 else {
2885 si->applet.ctx.stats.st_code = STAT_STATUS_PART;
2886 }
2887 out:
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2888 return 1;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2889}
2890
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2891/* returns a pointer to the first rule which forbids access (deny or http_auth),
2892 * or NULL if everything's OK.
2893 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2894static inline struct http_req_rule *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2895http_check_access_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
2896{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2897 struct http_req_rule *rule;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2898
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2899 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2900 int ret = 1;
2901
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2902 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2903 continue;
2904
2905 /* check condition, but only if attached */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2906 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2907 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]2908 ret = acl_pass(ret);
2909
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2910 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2911 ret = !ret;
2912 }
2913
2914 if (ret) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2915 if (rule->action == HTTP_REQ_ACT_ALLOW)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2916 return NULL; /* no problem */
2917 else
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2918 return rule; /* most likely a deny or auth rule */
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2919 }
2920 }
2921 return NULL;
2922}
2923
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2924/* This stream analyser runs all HTTP request processing which is common to
2925 * frontends and backends, which means blocking ACLs, filters, connection-close,
2926 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2927 * 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]2928 * either needs more data or wants to immediately abort the request (eg: deny,
2929 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2930 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2931int 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]2932{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2933 struct http_txn *txn = &s->txn;
2934 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2935 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2936 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2937 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]2938 struct cond_wordlist *wl;
Simon Horman70735c92011-06-07 11:07:50 +0900[diff] [blame]2939 int do_stats;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2940
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2941 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2942 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2943 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2944 return 0;
2945 }
2946
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2947 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2948 req->analyse_exp = TICK_ETERNITY;
2949
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2950 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]2951 now_ms, __FUNCTION__,
2952 s,
2953 req,
2954 req->rex, req->wex,
2955 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2956 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2957 req->analysers);
2958
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2959 /* first check whether we have some ACLs set to block this request */
2960 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2961 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]2962
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2963 ret = acl_pass(ret);
2964 if (cond->pol == ACL_COND_UNLESS)
2965 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]2966
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2967 if (ret) {
2968 txn->status = 403;
2969 /* let's log the request time */
2970 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2971 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2972 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2973 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2974 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2975 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2976
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2977 /* evaluate http-request rules */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2978 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]2979
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2980 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2981 if (!http_req_last_rule) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2982 do_stats = stats_check_uri(s->rep->prod, txn, px);
2983 if (do_stats)
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2984 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]2985 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2986 else
2987 do_stats = 0;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2988
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2989 /* return a 403 if either rule has blocked */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2990 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]2991 txn->status = 403;
2992 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2993 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2994 session_inc_http_err_ctr(s);
Willy Tarreau6da0f6d2011-01-06 18:19:50 +0100[diff] [blame]2995 s->fe->fe_counters.denied_req++;
2996 if (an_bit == AN_REQ_HTTP_PROCESS_BE)
2997 s->be->be_counters.denied_req++;
2998 if (s->listener->counters)
2999 s->listener->counters->denied_req++;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3000 goto return_prx_cond;
3001 }
3002
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3003 /* try headers filters */
3004 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3005 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3006 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3007
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3008 /* has the request been denied ? */
3009 if (txn->flags & TX_CLDENY) {
3010 /* no need to go further */
3011 txn->status = 403;
3012 /* let's log the request time */
3013 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3014 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3015 session_inc_http_err_ctr(s);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3016 goto return_prx_cond;
3017 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3018
3019 /* When a connection is tarpitted, we use the tarpit timeout,
3020 * which may be the same as the connect timeout if unspecified.
3021 * If unset, then set it to zero because we really want it to
3022 * eventually expire. We build the tarpit as an analyser.
3023 */
3024 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3025 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3026 /* wipe the request out so that we can drop the connection early
3027 * if the client closes first.
3028 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3029 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3030 req->analysers = 0; /* remove switching rules etc... */
3031 req->analysers |= AN_REQ_HTTP_TARPIT;
3032 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3033 if (!req->analyse_exp)
3034 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3035 session_inc_http_err_ctr(s);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3036 return 1;
3037 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3038 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3039
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3040 /* Until set to anything else, the connection mode is set as TUNNEL. It will
3041 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3042 * Option httpclose by itself does not set a mode, it remains a tunnel mode
3043 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3044 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
3045 * avoid to redo the same work if FE and BE have the same settings (common).
3046 * The method consists in checking if options changed between the two calls
3047 * (implying that either one is non-null, or one of them is non-null and we
3048 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]3049 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3050
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]3051 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
3052 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
3053 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
3054 (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]3055 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3056
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3057 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
3058 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3059 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]3060 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
3061 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3062 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3063 tmp = TX_CON_WANT_CLO;
3064
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3065 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
3066 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3067
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3068 if (!(txn->flags & TX_HDR_CONN_PRS)) {
3069 /* parse the Connection header and possibly clean it */
3070 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3071 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]3072 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
3073 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3074 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3075 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3076 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3077 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3078 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3079
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3080 /* check if client or config asks for explicit close in KAL/SCL */
3081 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
3082 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
3083 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3084 (!(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]3085 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3086 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]3087 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3088 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3089 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]3090
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3091 /* we can be blocked here because the request needs to be authenticated,
3092 * either to pass or to access stats.
3093 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3094 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_HTTP_AUTH) {
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3095 struct chunk msg;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3096 char *realm = http_req_last_rule->http_auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3097
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3098 if (!realm)
3099 realm = do_stats?STATS_DEFAULT_REALM:px->id;
3100
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]3101 sprintf(trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, realm);
Willy Tarreauc919dc62012-10-26 17:35:22 +0200[diff] [blame]3102 chunk_initlen(&msg, trash, global.tune.bufsize, strlen(trash));
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3103 txn->status = 401;
3104 stream_int_retnclose(req->prod, &msg);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3105 /* on 401 we still count one error, because normal browsing
3106 * won't significantly increase the counter but brute force
3107 * attempts will.
3108 */
3109 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3110 goto return_prx_cond;
3111 }
3112
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3113 /* add request headers from the rule sets in the same order */
3114 list_for_each_entry(wl, &px->req_add, list) {
3115 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3116 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]3117 ret = acl_pass(ret);
3118 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3119 ret = !ret;
3120 if (!ret)
3121 continue;
3122 }
3123
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3124 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3125 goto return_bad_req;
3126 }
3127
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3128 if (do_stats) {
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3129 struct stats_admin_rule *stats_admin_rule;
3130
3131 /* We need to provide stats for this request.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3132 * FIXME!!! that one is rather dangerous, we want to
3133 * make it follow standard rules (eg: clear req->analysers).
3134 */
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3135
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3136 /* now check whether we have some admin rules for this request */
3137 list_for_each_entry(stats_admin_rule, &s->be->uri_auth->admin_rules, list) {
3138 int ret = 1;
3139
3140 if (stats_admin_rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3141 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]3142 ret = acl_pass(ret);
3143 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3144 ret = !ret;
3145 }
3146
3147 if (ret) {
3148 /* no rule, or the rule matches */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3149 s->rep->prod->applet.ctx.stats.flags |= STAT_ADMIN;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3150 break;
3151 }
3152 }
3153
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3154 /* Was the status page requested with a POST ? */
3155 if (txn->meth == HTTP_METH_POST) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3156 if (s->rep->prod->applet.ctx.stats.flags & STAT_ADMIN) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3157 if (msg->msg_state < HTTP_MSG_100_SENT) {
3158 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3159 * send an HTTP/1.1 100 Continue intermediate response.
3160 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3161 if (msg->flags & HTTP_MSGF_VER_11) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3162 struct hdr_ctx ctx;
3163 ctx.idx = 0;
3164 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3165 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3166 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3167 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3168 }
3169 }
3170 msg->msg_state = HTTP_MSG_100_SENT;
3171 s->logs.tv_request = now; /* update the request timer to reflect full request */
3172 }
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3173 if (!http_process_req_stat_post(s->rep->prod, txn, req)) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3174 /* we need more data */
3175 req->analysers |= an_bit;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3176 channel_dont_connect(req);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3177 return 0;
3178 }
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3179 } else {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3180 s->rep->prod->applet.ctx.stats.st_code = STAT_STATUS_DENY;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3181 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3182 }
3183
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3184 s->logs.tv_request = now;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3185 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreaub24281b2011-02-13 13:16:36 +0100[diff] [blame]3186 stream_int_register_handler(s->rep->prod, &http_stats_applet);
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3187 copy_target(&s->target, &s->rep->prod->conn->target); // for logging only
3188 s->rep->prod->conn->xprt_ctx = s;
Willy Tarreaubc4af052011-02-13 13:25:14 +0100[diff] [blame]3189 s->rep->prod->applet.st0 = s->rep->prod->applet.st1 = 0;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3190 req->analysers = 0;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]3191 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3192 s->fe->fe_counters.intercepted_req++;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3193
3194 return 0;
3195
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3196 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3197
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3198 /* check whether we have some ACLs set to redirect this request */
3199 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3200 int ret = ACL_PAT_PASS;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3201
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3202 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3203 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]3204 ret = acl_pass(ret);
3205 if (rule->cond->pol == ACL_COND_UNLESS)
3206 ret = !ret;
3207 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3208
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3209 if (ret) {
Willy Tarreauc919dc62012-10-26 17:35:22 +0200[diff] [blame]3210 struct chunk rdr = { .str = trash, .size = global.tune.bufsize, .len = 0 };
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3211 const char *msg_fmt;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3212
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3213 /* build redirect message */
3214 switch(rule->code) {
3215 case 303:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3216 msg_fmt = HTTP_303;
3217 break;
3218 case 301:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3219 msg_fmt = HTTP_301;
3220 break;
3221 case 302:
3222 default:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3223 msg_fmt = HTTP_302;
3224 break;
3225 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3226
Willy Tarreau3bb9c232010-01-03 12:24:37 +0100[diff] [blame]3227 if (unlikely(!chunk_strcpy(&rdr, msg_fmt)))
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3228 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3229
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3230 switch(rule->type) {
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3231 case REDIRECT_TYPE_SCHEME: {
3232 const char *path;
3233 const char *host;
3234 struct hdr_ctx ctx;
3235 int pathlen;
3236 int hostlen;
3237
3238 host = "";
3239 hostlen = 0;
3240 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3241 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]3242 host = ctx.line + ctx.val;
3243 hostlen = ctx.vlen;
3244 }
3245
3246 path = http_get_path(txn);
3247 /* build message using path */
3248 if (path) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3249 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]3250 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3251 int qs = 0;
3252 while (qs < pathlen) {
3253 if (path[qs] == '?') {
3254 pathlen = qs;
3255 break;
3256 }
3257 qs++;
3258 }
3259 }
3260 } else {
3261 path = "/";
3262 pathlen = 1;
3263 }
3264
3265 /* check if we can add scheme + "://" + host + path */
3266 if (rdr.len + rule->rdr_len + 3 + hostlen + pathlen > rdr.size - 4)
3267 goto return_bad_req;
3268
3269 /* add scheme */
3270 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
3271 rdr.len += rule->rdr_len;
3272
3273 /* add "://" */
3274 memcpy(rdr.str + rdr.len, "://", 3);
3275 rdr.len += 3;
3276
3277 /* add host */
3278 memcpy(rdr.str + rdr.len, host, hostlen);
3279 rdr.len += hostlen;
3280
3281 /* add path */
3282 memcpy(rdr.str + rdr.len, path, pathlen);
3283 rdr.len += pathlen;
3284
3285 /* append a slash at the end of the location is needed and missing */
3286 if (rdr.len && rdr.str[rdr.len - 1] != '/' &&
3287 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3288 if (rdr.len > rdr.size - 5)
3289 goto return_bad_req;
3290 rdr.str[rdr.len] = '/';
3291 rdr.len++;
3292 }
3293
3294 break;
3295 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3296 case REDIRECT_TYPE_PREFIX: {
3297 const char *path;
3298 int pathlen;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3299
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3300 path = http_get_path(txn);
3301 /* build message using path */
3302 if (path) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3303 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]3304 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3305 int qs = 0;
3306 while (qs < pathlen) {
3307 if (path[qs] == '?') {
3308 pathlen = qs;
3309 break;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3310 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3311 qs++;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3312 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3313 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3314 } else {
3315 path = "/";
3316 pathlen = 1;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3317 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3318
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]3319 if (rdr.len + rule->rdr_len + pathlen > rdr.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3320 goto return_bad_req;
3321
3322 /* add prefix. Note that if prefix == "/", we don't want to
3323 * add anything, otherwise it makes it hard for the user to
3324 * configure a self-redirection.
3325 */
3326 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3327 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
3328 rdr.len += rule->rdr_len;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3329 }
3330
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3331 /* add path */
3332 memcpy(rdr.str + rdr.len, path, pathlen);
3333 rdr.len += pathlen;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3334
3335 /* append a slash at the end of the location is needed and missing */
3336 if (rdr.len && rdr.str[rdr.len - 1] != '/' &&
3337 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3338 if (rdr.len > rdr.size - 5)
3339 goto return_bad_req;
3340 rdr.str[rdr.len] = '/';
3341 rdr.len++;
3342 }
3343
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3344 break;
3345 }
3346 case REDIRECT_TYPE_LOCATION:
3347 default:
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]3348 if (rdr.len + rule->rdr_len > rdr.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3349 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3350
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3351 /* add location */
3352 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
3353 rdr.len += rule->rdr_len;
3354 break;
3355 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3356
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3357 if (rule->cookie_len) {
3358 memcpy(rdr.str + rdr.len, "\r\nSet-Cookie: ", 14);
3359 rdr.len += 14;
3360 memcpy(rdr.str + rdr.len, rule->cookie_str, rule->cookie_len);
3361 rdr.len += rule->cookie_len;
3362 memcpy(rdr.str + rdr.len, "\r\n", 2);
3363 rdr.len += 2;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3364 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3365
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3366 /* add end of headers and the keep-alive/close status.
3367 * We may choose to set keep-alive if the Location begins
3368 * with a slash, because the client will come back to the
3369 * same server.
3370 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3371 txn->status = rule->code;
3372 /* let's log the request time */
3373 s->logs.tv_request = now;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3374
3375 if (rule->rdr_len >= 1 && *rule->rdr_str == '/' &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3376 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3377 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3378 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3379 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3380 /* keep-alive possible */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3381 if (!(msg->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3382 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3383 memcpy(rdr.str + rdr.len, "\r\nProxy-Connection: keep-alive", 30);
3384 rdr.len += 30;
3385 } else {
3386 memcpy(rdr.str + rdr.len, "\r\nConnection: keep-alive", 24);
3387 rdr.len += 24;
3388 }
Willy Tarreau75661452010-01-10 10:35:01 +0100[diff] [blame]3389 }
3390 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
3391 rdr.len += 4;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3392 bo_inject(req->prod->ob, rdr.str, rdr.len);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3393 /* "eat" the request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3394 bi_fast_delete(req->buf, msg->sov);
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3395 msg->sov = 0;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3396 req->analysers = AN_REQ_HTTP_XFER_BODY;
Willy Tarreau9300fb22010-01-05 00:58:24 +0100[diff] [blame]3397 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3398 txn->req.msg_state = HTTP_MSG_CLOSED;
3399 txn->rsp.msg_state = HTTP_MSG_DONE;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3400 break;
3401 } else {
3402 /* keep-alive not possible */
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3403 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3404 memcpy(rdr.str + rdr.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3405 rdr.len += 29;
3406 } else {
3407 memcpy(rdr.str + rdr.len, "\r\nConnection: close\r\n\r\n", 23);
3408 rdr.len += 23;
3409 }
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]3410 stream_int_retnclose(req->prod, &rdr);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3411 goto return_prx_cond;
3412 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3413 }
3414 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3415
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3416 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3417 * If this happens, then the data will not come immediately, so we must
3418 * send all what we have without waiting. Note that due to the small gain
3419 * 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]3420 * 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]3421 * itself once used.
3422 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3423 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3424
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3425 /* that's OK for us now, let's move on to next analysers */
3426 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3427
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3428 return_bad_req:
3429 /* We centralize bad requests processing here */
3430 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3431 /* we detected a parsing error. We want to archive this request
3432 * in the dedicated proxy area for later troubleshooting.
3433 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3434 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]3435 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3436
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3437 txn->req.msg_state = HTTP_MSG_ERROR;
3438 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3439 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3440
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3441 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3442 if (s->listener->counters)
3443 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3444
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3445 return_prx_cond:
3446 if (!(s->flags & SN_ERR_MASK))
3447 s->flags |= SN_ERR_PRXCOND;
3448 if (!(s->flags & SN_FINST_MASK))
3449 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3450
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3451 req->analysers = 0;
3452 req->analyse_exp = TICK_ETERNITY;
3453 return 0;
3454}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3455
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3456/* This function performs all the processing enabled for the current request.
3457 * It returns 1 if the processing can continue on next analysers, or zero if it
3458 * needs more data, encounters an error, or wants to immediately abort the
3459 * request. It relies on buffers flags, and updates s->req->analysers.
3460 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3461int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3462{
3463 struct http_txn *txn = &s->txn;
3464 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3465
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3466 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3467 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3468 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3469 return 0;
3470 }
3471
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3472 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]3473 now_ms, __FUNCTION__,
3474 s,
3475 req,
3476 req->rex, req->wex,
3477 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3478 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3479 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3480
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]3481 if (s->fe->comp || s->be->comp)
3482 select_compression_request_header(s, req->buf);
3483
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3484 /*
3485 * Right now, we know that we have processed the entire headers
3486 * and that unwanted requests have been filtered out. We can do
3487 * whatever we want with the remaining request. Also, now we
3488 * may have separate values for ->fe, ->be.
3489 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3490
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3491 /*
3492 * If HTTP PROXY is set we simply get remote server address
3493 * parsing incoming request.
3494 */
3495 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3496 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]3497 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3498
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3499 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3500 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3501 * Note that doing so might move headers in the request, but
3502 * the fields will stay coherent and the URI will not move.
3503 * This should only be performed in the backend.
3504 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3505 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3506 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3507 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3508
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3509 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3510 * 8: the appsession cookie was looked up very early in 1.2,
3511 * so let's do the same now.
3512 */
3513
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3514 /* It needs to look into the URI unless persistence must be ignored */
3515 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3516 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]3517 }
3518
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3519 /* add unique-id if "header-unique-id" is specified */
3520
3521 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
3522 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
3523
3524 if (s->fe->header_unique_id && s->unique_id) {
3525 int ret = snprintf(trash, global.tune.bufsize, "%s: %s", s->fe->header_unique_id, s->unique_id);
3526 if (ret < 0 || ret > global.tune.bufsize)
3527 goto return_bad_req;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3528 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, trash) < 0))
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3529 goto return_bad_req;
3530 }
3531
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3532 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3533 * 9: add X-Forwarded-For if either the frontend or the backend
3534 * asks for it.
3535 */
3536 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3537 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3538 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3539 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3540 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]3541 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3542 /* The header is set to be added only if none is present
3543 * and we found it, so don't do anything.
3544 */
3545 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3546 else if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3547 /* Add an X-Forwarded-For header unless the source IP is
3548 * in the 'except' network range.
3549 */
3550 if ((!s->fe->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3551 (((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]3552 != s->fe->except_net.s_addr) &&
3553 (!s->be->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3554 (((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]3555 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3556 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3557 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3558 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3559
3560 /* Note: we rely on the backend to get the header name to be used for
3561 * x-forwarded-for, because the header is really meant for the backends.
3562 * However, if the backend did not specify any option, we have to rely
3563 * on the frontend's header name.
3564 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3565 if (s->be->fwdfor_hdr_len) {
3566 len = s->be->fwdfor_hdr_len;
3567 memcpy(trash, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3568 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3569 len = s->fe->fwdfor_hdr_len;
3570 memcpy(trash, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3571 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3572 len += sprintf(trash + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
Willy Tarreauedcf6682008-11-30 23:15:34 +0100[diff] [blame]3573
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3574 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, len) < 0))
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3575 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3576 }
3577 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3578 else if (s->req->prod->conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3579 /* FIXME: for the sake of completeness, we should also support
3580 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3581 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3582 int len;
3583 char pn[INET6_ADDRSTRLEN];
3584 inet_ntop(AF_INET6,
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3585 (const void *)&((struct sockaddr_in6 *)(&s->req->prod->conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3586 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3587
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3588 /* Note: we rely on the backend to get the header name to be used for
3589 * x-forwarded-for, because the header is really meant for the backends.
3590 * However, if the backend did not specify any option, we have to rely
3591 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3592 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3593 if (s->be->fwdfor_hdr_len) {
3594 len = s->be->fwdfor_hdr_len;
3595 memcpy(trash, s->be->fwdfor_hdr_name, len);
3596 } else {
3597 len = s->fe->fwdfor_hdr_len;
3598 memcpy(trash, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3599 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3600 len += sprintf(trash + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3601
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3602 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, len) < 0))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3603 goto return_bad_req;
3604 }
3605 }
3606
3607 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3608 * 10: add X-Original-To if either the frontend or the backend
3609 * asks for it.
3610 */
3611 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3612
3613 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3614 if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3615 /* Add an X-Original-To header unless the destination IP is
3616 * in the 'except' network range.
3617 */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3618 conn_get_to_addr(s->req->prod->conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3619
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3620 if (s->req->prod->conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3621 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3622 (((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]3623 != s->fe->except_to.s_addr) &&
3624 (!s->be->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3625 (((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]3626 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3627 int len;
3628 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3629 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3630
3631 /* Note: we rely on the backend to get the header name to be used for
3632 * x-original-to, because the header is really meant for the backends.
3633 * However, if the backend did not specify any option, we have to rely
3634 * on the frontend's header name.
3635 */
3636 if (s->be->orgto_hdr_len) {
3637 len = s->be->orgto_hdr_len;
3638 memcpy(trash, s->be->orgto_hdr_name, len);
3639 } else {
3640 len = s->fe->orgto_hdr_len;
3641 memcpy(trash, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3642 }
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3643 len += sprintf(trash + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
3644
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3645 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, len) < 0))
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3646 goto return_bad_req;
3647 }
3648 }
3649 }
3650
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3651 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set. */
3652 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3653 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3654 unsigned int want_flags = 0;
3655
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3656 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3657 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
3658 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
3659 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3660 want_flags |= TX_CON_CLO_SET;
3661 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3662 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3663 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3664 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3665 want_flags |= TX_CON_KAL_SET;
3666 }
3667
3668 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3669 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3670 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3671
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3672
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3673 /* If we have no server assigned yet and we're balancing on url_param
3674 * with a POST request, we may be interested in checking the body for
3675 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3676 */
3677 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3678 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3679 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3680 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3681 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3682 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3683 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3684
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3685 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3686 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3687#ifdef TCP_QUICKACK
3688 /* We expect some data from the client. Unless we know for sure
3689 * we already have a full request, we have to re-enable quick-ack
3690 * in case we previously disabled it, otherwise we might cause
3691 * the client to delay further data.
3692 */
3693 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3694 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3695 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaufb7508a2012-05-21 16:47:54 +0200[diff] [blame]3696 setsockopt(si_fd(&s->si[0]), IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3697#endif
3698 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]3699
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3700 /*************************************************************
3701 * OK, that's finished for the headers. We have done what we *
3702 * could. Let's switch to the DATA state. *
3703 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3704 req->analyse_exp = TICK_ETERNITY;
3705 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3706
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3707 /* if the server closes the connection, we want to immediately react
3708 * and close the socket to save packets and syscalls.
3709 */
3710 req->cons->flags |= SI_FL_NOHALF;
3711
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3712 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3713 /* OK let's go on with the BODY now */
3714 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3715
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3716 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3717 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3718 /* we detected a parsing error. We want to archive this request
3719 * in the dedicated proxy area for later troubleshooting.
3720 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3721 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]3722 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3723
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3724 txn->req.msg_state = HTTP_MSG_ERROR;
3725 txn->status = 400;
3726 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3727 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3728
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3729 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3730 if (s->listener->counters)
3731 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3732
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3733 if (!(s->flags & SN_ERR_MASK))
3734 s->flags |= SN_ERR_PRXCOND;
3735 if (!(s->flags & SN_FINST_MASK))
3736 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3737 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3738}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3739
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3740/* This function is an analyser which processes the HTTP tarpit. It always
3741 * returns zero, at the beginning because it prevents any other processing
3742 * from occurring, and at the end because it terminates the request.
3743 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3744int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3745{
3746 struct http_txn *txn = &s->txn;
3747
3748 /* This connection is being tarpitted. The CLIENT side has
3749 * already set the connect expiration date to the right
3750 * timeout. We just have to check that the client is still
3751 * there and that the timeout has not expired.
3752 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3753 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3754 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3755 !tick_is_expired(req->analyse_exp, now_ms))
3756 return 0;
3757
3758 /* We will set the queue timer to the time spent, just for
3759 * logging purposes. We fake a 500 server error, so that the
3760 * attacker will not suspect his connection has been tarpitted.
3761 * It will not cause trouble to the logs because we can exclude
3762 * the tarpitted connections by filtering on the 'PT' status flags.
3763 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3764 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
3765
3766 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3767 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3768 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3769
3770 req->analysers = 0;
3771 req->analyse_exp = TICK_ETERNITY;
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 Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3776
Willy Tarreau60b85b02008-11-30 23:28:40 +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_T;
3781 return 0;
3782}
3783
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3784/* This function is an analyser which processes the HTTP request body. It looks
3785 * for parameters to be used for the load balancing algorithm (url_param). It
3786 * must only be called after the standard HTTP request processing has occurred,
3787 * because it expects the request to be parsed. It returns zero if it needs to
3788 * read more data, or 1 once it has completed its analysis.
3789 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3790int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3791{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3792 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3793 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3794 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3795
3796 /* We have to parse the HTTP request body to find any required data.
3797 * "balance url_param check_post" should have been the only way to get
3798 * into this. We were brought here after HTTP header analysis, so all
3799 * related structures are ready.
3800 */
3801
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3802 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
3803 goto missing_data;
3804
3805 if (msg->msg_state < HTTP_MSG_100_SENT) {
3806 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3807 * send an HTTP/1.1 100 Continue intermediate response.
3808 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3809 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3810 struct hdr_ctx ctx;
3811 ctx.idx = 0;
3812 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3813 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3814 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3815 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3816 }
3817 }
3818 msg->msg_state = HTTP_MSG_100_SENT;
3819 }
3820
3821 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3822 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3823 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3824 * is still null. We must save the body in msg->next because it
3825 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3826 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]3827 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3828
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3829 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3830 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
3831 else
3832 msg->msg_state = HTTP_MSG_DATA;
3833 }
3834
3835 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3836 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3837 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3838 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3839 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]3840 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3841
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3842 if (!ret)
3843 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3844 else if (ret < 0) {
3845 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3846 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3847 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3848 }
3849
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3850 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3851 * We have the first data byte is in msg->sov. We're waiting for at
3852 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3853 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3854
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3855 if (msg->body_len < limit)
3856 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3857
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3858 if (req->buf->i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3859 goto http_end;
3860
3861 missing_data:
3862 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3863 if (buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3864 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3865 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3866 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3867
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3868 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3869 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3870 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3871
3872 if (!(s->flags & SN_ERR_MASK))
3873 s->flags |= SN_ERR_CLITO;
3874 if (!(s->flags & SN_FINST_MASK))
3875 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3876 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3877 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3878
3879 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3880 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]3881 /* Not enough data. We'll re-use the http-request
3882 * timeout here. Ideally, we should set the timeout
3883 * relative to the accept() date. We just set the
3884 * request timeout once at the beginning of the
3885 * request.
3886 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3887 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3888 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]3889 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3890 return 0;
3891 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3892
3893 http_end:
3894 /* The situation will not evolve, so let's give up on the analysis. */
3895 s->logs.tv_request = now; /* update the request timer to reflect full request */
3896 req->analysers &= ~an_bit;
3897 req->analyse_exp = TICK_ETERNITY;
3898 return 1;
3899
3900 return_bad_req: /* let's centralize all bad requests */
3901 txn->req.msg_state = HTTP_MSG_ERROR;
3902 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3903 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3904
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3905 if (!(s->flags & SN_ERR_MASK))
3906 s->flags |= SN_ERR_PRXCOND;
3907 if (!(s->flags & SN_FINST_MASK))
3908 s->flags |= SN_FINST_R;
3909
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3910 return_err_msg:
3911 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3912 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3913 if (s->listener->counters)
3914 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3915 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3916}
3917
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3918/* send a server's name with an outgoing request over an established connection.
3919 * Note: this function is designed to be called once the request has been scheduled
3920 * for being forwarded. This is the reason why it rewinds the buffer before
3921 * proceeding.
3922 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]3923int 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]3924
3925 struct hdr_ctx ctx;
3926
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3927 char *hdr_name = be->server_id_hdr_name;
3928 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]3929 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3930 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3931 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3932
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]3933 ctx.idx = 0;
3934
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3935 old_o = chn->buf->o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3936 if (old_o) {
3937 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3938 b_rew(chn->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3939 }
3940
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3941 old_i = chn->buf->i;
3942 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]3943 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3944 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3945 }
3946
3947 /* Add the new header requested with the server value */
3948 hdr_val = trash;
3949 memcpy(hdr_val, hdr_name, hdr_name_len);
3950 hdr_val += hdr_name_len;
3951 *hdr_val++ = ':';
3952 *hdr_val++ = ' ';
Willy Tarreauc919dc62012-10-26 17:35:22 +0200[diff] [blame]3953 hdr_val += strlcpy2(hdr_val, srv_name, trash + global.tune.bufsize - hdr_val);
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3954 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, hdr_val - trash);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3955
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3956 if (old_o) {
3957 /* If this was a forwarded request, we must readjust the amount of
3958 * data to be forwarded in order to take into account the size
3959 * variations.
3960 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3961 b_adv(chn->buf, old_o + chn->buf->i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3962 }
3963
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3964 return 0;
3965}
3966
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3967/* Terminate current transaction and prepare a new one. This is very tricky
3968 * right now but it works.
3969 */
3970void http_end_txn_clean_session(struct session *s)
3971{
3972 /* FIXME: We need a more portable way of releasing a backend's and a
3973 * server's connections. We need a safer way to reinitialize buffer
3974 * flags. We also need a more accurate method for computing per-request
3975 * data.
3976 */
3977 http_silent_debug(__LINE__, s);
3978
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3979 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]3980 si_shutr(s->req->cons);
3981 si_shutw(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3982
3983 http_silent_debug(__LINE__, s);
3984
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]3985 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3986 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]3987 if (unlikely(s->srv_conn))
3988 sess_change_server(s, NULL);
3989 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3990
3991 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
3992 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]3993 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3994
3995 if (s->txn.status) {
3996 int n;
3997
3998 n = s->txn.status / 100;
3999 if (n < 1 || n > 5)
4000 n = 0;
4001
4002 if (s->fe->mode == PR_MODE_HTTP)
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4003 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4004
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4005 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4006 (s->be->mode == PR_MODE_HTTP))
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4007 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4008 }
4009
4010 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4011 s->logs.bytes_in -= s->req->buf->i;
4012 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4013
4014 /* let's do a final log if we need it */
4015 if (s->logs.logwait &&
4016 !(s->flags & SN_MONITOR) &&
4017 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4018 s->do_log(s);
4019 }
4020
4021 s->logs.accept_date = date; /* user-visible date for logging */
4022 s->logs.tv_accept = now; /* corrected date for internal use */
4023 tv_zero(&s->logs.tv_request);
4024 s->logs.t_queue = -1;
4025 s->logs.t_connect = -1;
4026 s->logs.t_data = -1;
4027 s->logs.t_close = 0;
4028 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4029 s->logs.srv_queue_size = 0; /* we will get this number soon */
4030
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4031 s->logs.bytes_in = s->req->total = s->req->buf->i;
4032 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4033
4034 if (s->pend_pos)
4035 pendconn_free(s->pend_pos);
4036
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4037 if (target_srv(&s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4038 if (s->flags & SN_CURR_SESS) {
4039 s->flags &= ~SN_CURR_SESS;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4040 target_srv(&s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4041 }
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4042 if (may_dequeue_tasks(target_srv(&s->target), s->be))
4043 process_srv_queue(target_srv(&s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4044 }
4045
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]4046 clear_target(&s->target);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4047
4048 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]4049 s->req->cons->conn->t.sock.fd = -1; /* just to help with debugging */
4050 s->req->cons->conn->flags = CO_FL_NONE;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4051 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4052 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4053 s->req->cons->err_loc = NULL;
4054 s->req->cons->exp = TICK_ETERNITY;
4055 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4056 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4057 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]4058 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]4059 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
4060 s->txn.meth = 0;
4061 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4062 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4063 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4064 s->req->cons->flags |= SI_FL_INDEP_STR;
4065
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4066 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4067 s->req->flags |= CF_NEVER_WAIT;
4068 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4069 }
4070
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4071 /* if the request buffer is not empty, it means we're
4072 * about to process another request, so send pending
4073 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4074 * Just don't do this if the buffer is close to be full,
4075 * because the request will wait for it to flush a little
4076 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4077 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4078 if (s->req->buf->i) {
4079 if (s->rep->buf->o &&
4080 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4081 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]4082 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4083 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4084
4085 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4086 channel_auto_read(s->req);
4087 channel_auto_close(s->req);
4088 channel_auto_read(s->rep);
4089 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4090
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4091 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4092 s->rep->analysers = 0;
4093
4094 http_silent_debug(__LINE__, s);
4095}
4096
4097
4098/* This function updates the request state machine according to the response
4099 * state machine and buffer flags. It returns 1 if it changes anything (flag
4100 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4101 * it is only used to find when a request/response couple is complete. Both
4102 * this function and its equivalent should loop until both return zero. It
4103 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4104 */
4105int http_sync_req_state(struct session *s)
4106{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4107 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4108 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4109 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4110 unsigned int old_state = txn->req.msg_state;
4111
4112 http_silent_debug(__LINE__, s);
4113 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4114 return 0;
4115
4116 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4117 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4118 * We can shut the read side unless we want to abort_on_close,
4119 * or we have a POST request. The issue with POST requests is
4120 * that some browsers still send a CRLF after the request, and
4121 * this CRLF must be read so that it does not remain in the kernel
4122 * buffers, otherwise a close could cause an RST on some systems
4123 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4124 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4125 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4126 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4127
4128 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4129 goto wait_other_side;
4130
4131 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4132 /* The server has not finished to respond, so we
4133 * don't want to move in order not to upset it.
4134 */
4135 goto wait_other_side;
4136 }
4137
4138 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4139 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4140 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4141 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4142 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4143 goto wait_other_side;
4144 }
4145
4146 /* When we get here, it means that both the request and the
4147 * response have finished receiving. Depending on the connection
4148 * mode, we'll have to wait for the last bytes to leave in either
4149 * direction, and sometimes for a close to be effective.
4150 */
4151
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4152 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4153 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4154 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4155 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4156 }
4157 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4158 /* Option forceclose is set, or either side wants to close,
4159 * let's enforce it now that we're not expecting any new
4160 * data to come. The caller knows the session is complete
4161 * once both states are CLOSED.
4162 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4163 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4164 channel_shutr_now(chn);
4165 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4166 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4167 }
4168 else {
4169 /* The last possible modes are keep-alive and tunnel. Since tunnel
4170 * mode does not set the body analyser, we can't reach this place
4171 * in tunnel mode, so we're left with keep-alive only.
4172 * This mode is currently not implemented, we switch to tunnel mode.
4173 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4174 channel_auto_read(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4175 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4176 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4177 }
4178
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4179 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4180 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4181 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4182
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4183 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4184 txn->req.msg_state = HTTP_MSG_CLOSING;
4185 goto http_msg_closing;
4186 }
4187 else {
4188 txn->req.msg_state = HTTP_MSG_CLOSED;
4189 goto http_msg_closed;
4190 }
4191 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4192 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4193 }
4194
4195 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4196 http_msg_closing:
4197 /* nothing else to forward, just waiting for the output buffer
4198 * to be empty and for the shutw_now to take effect.
4199 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4200 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4201 txn->req.msg_state = HTTP_MSG_CLOSED;
4202 goto http_msg_closed;
4203 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4204 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4205 txn->req.msg_state = HTTP_MSG_ERROR;
4206 goto wait_other_side;
4207 }
4208 }
4209
4210 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4211 http_msg_closed:
4212 goto wait_other_side;
4213 }
4214
4215 wait_other_side:
4216 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4217 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4218}
4219
4220
4221/* This function updates the response state machine according to the request
4222 * state machine and buffer flags. It returns 1 if it changes anything (flag
4223 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4224 * it is only used to find when a request/response couple is complete. Both
4225 * this function and its equivalent should loop until both return zero. It
4226 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4227 */
4228int http_sync_res_state(struct session *s)
4229{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4230 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4231 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4232 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4233 unsigned int old_state = txn->rsp.msg_state;
4234
4235 http_silent_debug(__LINE__, s);
4236 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4237 return 0;
4238
4239 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4240 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4241 * still monitor the server connection for a possible close
4242 * while the request is being uploaded, so we don't disable
4243 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4244 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4245 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4246
4247 if (txn->req.msg_state == HTTP_MSG_ERROR)
4248 goto wait_other_side;
4249
4250 if (txn->req.msg_state < HTTP_MSG_DONE) {
4251 /* The client seems to still be sending data, probably
4252 * because we got an error response during an upload.
4253 * We have the choice of either breaking the connection
4254 * or letting it pass through. Let's do the later.
4255 */
4256 goto wait_other_side;
4257 }
4258
4259 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4260 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4261 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4262 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4263 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4264 goto wait_other_side;
4265 }
4266
4267 /* When we get here, it means that both the request and the
4268 * response have finished receiving. Depending on the connection
4269 * mode, we'll have to wait for the last bytes to leave in either
4270 * direction, and sometimes for a close to be effective.
4271 */
4272
4273 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4274 /* Server-close mode : shut read and wait for the request
4275 * side to close its output buffer. The caller will detect
4276 * when we're in DONE and the other is in CLOSED and will
4277 * catch that for the final cleanup.
4278 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4279 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4280 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4281 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4282 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4283 /* Option forceclose is set, or either side wants to close,
4284 * let's enforce it now that we're not expecting any new
4285 * data to come. The caller knows the session is complete
4286 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4287 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4288 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4289 channel_shutr_now(chn);
4290 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4291 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4292 }
4293 else {
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4294 /* The last possible modes are keep-alive and tunnel. Since tunnel
4295 * mode does not set the body analyser, we can't reach this place
4296 * in tunnel mode, so we're left with keep-alive only.
4297 * This mode is currently not implemented, we switch to tunnel mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4298 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4299 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4300 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4301 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4302 }
4303
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4304 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4305 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4306 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4307 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4308 goto http_msg_closing;
4309 }
4310 else {
4311 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4312 goto http_msg_closed;
4313 }
4314 }
4315 goto wait_other_side;
4316 }
4317
4318 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4319 http_msg_closing:
4320 /* nothing else to forward, just waiting for the output buffer
4321 * to be empty and for the shutw_now to take effect.
4322 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4323 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4324 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4325 goto http_msg_closed;
4326 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4327 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4328 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4329 s->be->be_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4330 if (target_srv(&s->target))
4331 target_srv(&s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4332 goto wait_other_side;
4333 }
4334 }
4335
4336 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4337 http_msg_closed:
4338 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4339 bi_erase(chn);
4340 channel_auto_close(chn);
4341 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4342 goto wait_other_side;
4343 }
4344
4345 wait_other_side:
4346 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4347 /* We force the response to leave immediately if we're waiting for the
4348 * other side, since there is no pending shutdown to push it out.
4349 */
4350 if (!channel_is_empty(chn))
4351 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4352 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4353}
4354
4355
4356/* Resync the request and response state machines. Return 1 if either state
4357 * changes.
4358 */
4359int http_resync_states(struct session *s)
4360{
4361 struct http_txn *txn = &s->txn;
4362 int old_req_state = txn->req.msg_state;
4363 int old_res_state = txn->rsp.msg_state;
4364
4365 http_silent_debug(__LINE__, s);
4366 http_sync_req_state(s);
4367 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4368 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4369 if (!http_sync_res_state(s))
4370 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4371 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4372 if (!http_sync_req_state(s))
4373 break;
4374 }
4375 http_silent_debug(__LINE__, s);
4376 /* OK, both state machines agree on a compatible state.
4377 * There are a few cases we're interested in :
4378 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4379 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4380 * directions, so let's simply disable both analysers.
4381 * - HTTP_MSG_CLOSED on the response only means we must abort the
4382 * request.
4383 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4384 * with server-close mode means we've completed one request and we
4385 * must re-initialize the server connection.
4386 */
4387
4388 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4389 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4390 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4391 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4392 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4393 channel_auto_close(s->req);
4394 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4395 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4396 channel_auto_close(s->rep);
4397 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4398 }
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4399 else if (txn->rsp.msg_state == HTTP_MSG_CLOSED ||
4400 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4401 txn->req.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4402 (s->rep->flags & CF_SHUTW)) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4403 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4404 channel_auto_close(s->rep);
4405 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4406 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4407 channel_abort(s->req);
4408 channel_auto_close(s->req);
4409 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4410 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4411 }
4412 else if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4413 txn->rsp.msg_state == HTTP_MSG_DONE &&
4414 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)) {
4415 /* server-close: terminate this server connection and
4416 * reinitialize a fresh-new transaction.
4417 */
4418 http_end_txn_clean_session(s);
4419 }
4420
4421 http_silent_debug(__LINE__, s);
4422 return txn->req.msg_state != old_req_state ||
4423 txn->rsp.msg_state != old_res_state;
4424}
4425
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4426/* This function is an analyser which forwards request body (including chunk
4427 * sizes if any). It is called as soon as we must forward, even if we forward
4428 * zero byte. The only situation where it must not be called is when we're in
4429 * tunnel mode and we want to forward till the close. It's used both to forward
4430 * remaining data and to resync after end of body. It expects the msg_state to
4431 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4432 * 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]4433 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4434 * bytes of pending data + the headers if not already done (between sol and sov).
4435 * 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]4436 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4437int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4438{
4439 struct http_txn *txn = &s->txn;
4440 struct http_msg *msg = &s->txn.req;
4441
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4442 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4443 return 0;
4444
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4445 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]4446 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4447 /* Output closed while we were sending data. We must abort and
4448 * wake the other side up.
4449 */
4450 msg->msg_state = HTTP_MSG_ERROR;
4451 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4452 return 1;
4453 }
4454
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4455 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4456 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4457
4458 /* Note that we don't have to send 100-continue back because we don't
4459 * need the data to complete our job, and it's up to the server to
4460 * decide whether to return 100, 417 or anything else in return of
4461 * an "Expect: 100-continue" header.
4462 */
4463
4464 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4465 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4466 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4467 * is still null. We must save the body in msg->next because it
4468 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4469 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4470 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4471
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4472 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4473 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4474 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4475 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4476 }
4477
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4478 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4479 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4480
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4481 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4482 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4483 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4484 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4485 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4486 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4487 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4488 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4489 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4490
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4491 if (msg->msg_state == HTTP_MSG_DATA) {
4492 /* must still forward */
4493 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4494 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4495
4496 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4497 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4498 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4499 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4500 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4501 }
4502 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4503 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4504 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4505 * TRAILERS state.
4506 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4507 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4508
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4509 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4510 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4511 else if (ret < 0) {
4512 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4513 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4514 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]4515 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4516 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4517 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4518 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4519 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4520 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4521 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4522
4523 if (ret == 0)
4524 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4525 else if (ret < 0) {
4526 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4527 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4528 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]4529 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4530 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4531 /* we're in MSG_CHUNK_SIZE now */
4532 }
4533 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4534 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4535
4536 if (ret == 0)
4537 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4538 else if (ret < 0) {
4539 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4540 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4541 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]4542 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4543 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4544 /* we're in HTTP_MSG_DONE now */
4545 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4546 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4547 int old_state = msg->msg_state;
4548
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4549 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4550 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4551 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4552 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4553 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4554 if (http_resync_states(s)) {
4555 /* some state changes occurred, maybe the analyser
4556 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4557 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4558 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4559 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4560 /* request errors are most likely due to
4561 * the server aborting the transfer.
4562 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4563 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4564 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4565 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4566 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4567 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4568 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4569 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4570 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4571
4572 /* If "option abortonclose" is set on the backend, we
4573 * want to monitor the client's connection and forward
4574 * any shutdown notification to the server, which will
4575 * decide whether to close or to go on processing the
4576 * request.
4577 */
4578 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4579 channel_auto_read(req);
4580 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4581 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4582 else if (s->txn.meth == HTTP_METH_POST) {
4583 /* POST requests may require to read extra CRLF
4584 * sent by broken browsers and which could cause
4585 * an RST to be sent upon close on some systems
4586 * (eg: Linux).
4587 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4588 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4589 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4590
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4591 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4592 }
4593 }
4594
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4595 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4596 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4597 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4598 if (!(s->flags & SN_ERR_MASK))
4599 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4600 if (!(s->flags & SN_FINST_MASK)) {
4601 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4602 s->flags |= SN_FINST_H;
4603 else
4604 s->flags |= SN_FINST_D;
4605 }
4606
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4607 s->fe->fe_counters.cli_aborts++;
4608 s->be->be_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4609 if (target_srv(&s->target))
4610 target_srv(&s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4611
4612 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4613 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4614
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4615 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4616 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4617 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4618
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4619 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4620 * 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]4621 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4622 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4623 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4624
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4625 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4626 * 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]4627 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4628 * modes are already handled by the stream sock layer. We must not do
4629 * this in content-length mode because it could present the MSG_MORE
4630 * flag with the last block of forwarded data, which would cause an
4631 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4632 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4633 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4634 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4635
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4636 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4637 return 0;
4638
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4639 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4640 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4641 if (s->listener->counters)
4642 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4643 return_bad_req_stats_ok:
4644 txn->req.msg_state = HTTP_MSG_ERROR;
4645 if (txn->status) {
4646 /* Note: we don't send any error if some data were already sent */
4647 stream_int_retnclose(req->prod, NULL);
4648 } else {
4649 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4650 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4651 }
4652 req->analysers = 0;
4653 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]4654
4655 if (!(s->flags & SN_ERR_MASK))
4656 s->flags |= SN_ERR_PRXCOND;
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 return 0;
4664
4665 aborted_xfer:
4666 txn->req.msg_state = HTTP_MSG_ERROR;
4667 if (txn->status) {
4668 /* Note: we don't send any error if some data were already sent */
4669 stream_int_retnclose(req->prod, NULL);
4670 } else {
4671 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4672 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4673 }
4674 req->analysers = 0;
4675 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
4676
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4677 s->fe->fe_counters.srv_aborts++;
4678 s->be->be_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4679 if (target_srv(&s->target))
4680 target_srv(&s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4681
4682 if (!(s->flags & SN_ERR_MASK))
4683 s->flags |= SN_ERR_SRVCL;
4684 if (!(s->flags & SN_FINST_MASK)) {
4685 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4686 s->flags |= SN_FINST_H;
4687 else
4688 s->flags |= SN_FINST_D;
4689 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4690 return 0;
4691}
4692
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4693/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4694 * processing can continue on next analysers, or zero if it either needs more
4695 * data or wants to immediately abort the response (eg: timeout, error, ...). It
4696 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
4697 * when it has nothing left to do, and may remove any analyser when it wants to
4698 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4699 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4700int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4701{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4702 struct http_txn *txn = &s->txn;
4703 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4704 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4705 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4706 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4707 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4708
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4709 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]4710 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4711 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4712 rep,
4713 rep->rex, rep->wex,
4714 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4715 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4716 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]4717
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4718 /*
4719 * Now parse the partial (or complete) lines.
4720 * We will check the response syntax, and also join multi-line
4721 * headers. An index of all the lines will be elaborated while
4722 * parsing.
4723 *
4724 * For the parsing, we use a 28 states FSM.
4725 *
4726 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4727 * rep->buf->p = beginning of response
4728 * rep->buf->p + msg->eoh = end of processed headers / start of current one
4729 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4730 * msg->eol = end of current header or line (LF or CRLF)
4731 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4732 */
4733
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4734 /* There's a protected area at the end of the buffer for rewriting
4735 * purposes. We don't want to start to parse the request if the
4736 * protected area is affected, because we may have to move processed
4737 * data later, which is much more complicated.
4738 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4739 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]4740 if (unlikely(channel_full(rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4741 bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
4742 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite)) {
4743 if (rep->buf->o) {
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4744 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4745 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4746 goto abort_response;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4747 channel_dont_close(rep);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4748 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4749 return 0;
4750 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4751 if (rep->buf->i <= rep->buf->size - global.tune.maxrewrite)
4752 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4753 }
4754
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4755 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]4756 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4757 }
4758
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4759 /* 1: we might have to print this header in debug mode */
4760 if (unlikely((global.mode & MODE_DEBUG) &&
4761 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4762 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4763 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4764
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4765 sol = rep->buf->p;
4766 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4767 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4768
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4769 sol += hdr_idx_first_pos(&txn->hdr_idx);
4770 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4771
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4772 while (cur_idx) {
4773 eol = sol + txn->hdr_idx.v[cur_idx].len;
4774 debug_hdr("srvhdr", s, sol, eol);
4775 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
4776 cur_idx = txn->hdr_idx.v[cur_idx].next;
4777 }
4778 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4779
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4780 /*
4781 * Now we quickly check if we have found a full valid response.
4782 * If not so, we check the FD and buffer states before leaving.
4783 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4784 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4785 * responses are checked first.
4786 *
4787 * Depending on whether the client is still there or not, we
4788 * may send an error response back or not. Note that normally
4789 * we should only check for HTTP status there, and check I/O
4790 * errors somewhere else.
4791 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4792
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4793 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4794 /* Invalid response */
4795 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
4796 /* we detected a parsing error. We want to archive this response
4797 * in the dedicated proxy area for later troubleshooting.
4798 */
4799 hdr_response_bad:
4800 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4801 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]4802
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4803 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4804 if (target_srv(&s->target)) {
4805 target_srv(&s->target)->counters.failed_resp++;
4806 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4807 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4808 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4809 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4810 rep->analysers = 0;
4811 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4812 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4813 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4814 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4815
4816 if (!(s->flags & SN_ERR_MASK))
4817 s->flags |= SN_ERR_PRXCOND;
4818 if (!(s->flags & SN_FINST_MASK))
4819 s->flags |= SN_FINST_H;
4820
4821 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4822 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4823
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4824 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4825 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]4826 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4827 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4828 goto hdr_response_bad;
4829 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4830
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4831 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4832 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4833 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4834 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]4835
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4836 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4837 if (target_srv(&s->target)) {
4838 target_srv(&s->target)->counters.failed_resp++;
4839 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4840 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]4841
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4842 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4843 rep->analysers = 0;
4844 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4845 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4846 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4847 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]4848
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4849 if (!(s->flags & SN_ERR_MASK))
4850 s->flags |= SN_ERR_SRVCL;
4851 if (!(s->flags & SN_FINST_MASK))
4852 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]4853 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4854 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4855
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4856 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4857 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4858 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4859 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]4860
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4861 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4862 if (target_srv(&s->target)) {
4863 target_srv(&s->target)->counters.failed_resp++;
4864 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4865 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4866
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4867 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4868 rep->analysers = 0;
4869 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4870 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4871 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4872 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4873
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4874 if (!(s->flags & SN_ERR_MASK))
4875 s->flags |= SN_ERR_SRVTO;
4876 if (!(s->flags & SN_FINST_MASK))
4877 s->flags |= SN_FINST_H;
4878 return 0;
4879 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]4880
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4881 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4882 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4883 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4884 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]4885
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4886 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4887 if (target_srv(&s->target)) {
4888 target_srv(&s->target)->counters.failed_resp++;
4889 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4890 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4891
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4892 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4893 rep->analysers = 0;
4894 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4895 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4896 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4897 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4898
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4899 if (!(s->flags & SN_ERR_MASK))
4900 s->flags |= SN_ERR_SRVCL;
4901 if (!(s->flags & SN_FINST_MASK))
4902 s->flags |= SN_FINST_H;
4903 return 0;
4904 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4905
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4906 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4907 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4908 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4909 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]4910
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4911 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4912 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4913 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4914
4915 if (!(s->flags & SN_ERR_MASK))
4916 s->flags |= SN_ERR_CLICL;
4917 if (!(s->flags & SN_FINST_MASK))
4918 s->flags |= SN_FINST_H;
4919
4920 /* process_session() will take care of the error */
4921 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[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_dont_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4925 return 0;
4926 }
4927
4928 /* More interesting part now : we know that we have a complete
4929 * response which at least looks like HTTP. We have an indicator
4930 * of each header's length, so we can parse them quickly.
4931 */
4932
4933 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4934 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]4935
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4936 /*
4937 * 1: get the status code
4938 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4939 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4940 if (n < 1 || n > 5)
4941 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4942 /* when the client triggers a 4xx from the server, it's most often due
4943 * to a missing object or permission. These events should be tracked
4944 * because if they happen often, it may indicate a brute force or a
4945 * vulnerability scan.
4946 */
4947 if (n == 4)
4948 session_inc_http_err_ctr(s);
4949
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4950 if (target_srv(&s->target))
4951 target_srv(&s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4952
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4953 /* check if the response is HTTP/1.1 or above */
4954 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4955 ((rep->buf->p[5] > '1') ||
4956 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4957 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4958
4959 /* "connection" has not been parsed yet */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4960 txn->flags &= ~(TX_HDR_CONN_PRS|TX_HDR_CONN_CLO|TX_HDR_CONN_KAL|TX_CON_CLO_SET|TX_CON_KAL_SET);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4961
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4962 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4963 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4964
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4965 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]4966
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]4967 /* Adjust server's health based on status code. Note: status codes 501
4968 * and 505 are triggered on demand by client request, so we must not
4969 * count them as server failures.
4970 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4971 if (target_srv(&s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]4972 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4973 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]4974 else
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4975 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]4976 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4977
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4978 /*
4979 * 2: check for cacheability.
4980 */
4981
4982 switch (txn->status) {
4983 case 200:
4984 case 203:
4985 case 206:
4986 case 300:
4987 case 301:
4988 case 410:
4989 /* RFC2616 @13.4:
4990 * "A response received with a status code of
4991 * 200, 203, 206, 300, 301 or 410 MAY be stored
4992 * by a cache (...) unless a cache-control
4993 * directive prohibits caching."
4994 *
4995 * RFC2616 @9.5: POST method :
4996 * "Responses to this method are not cacheable,
4997 * unless the response includes appropriate
4998 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4999 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5000 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5001 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5002 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5003 break;
5004 default:
5005 break;
5006 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5007
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5008 /*
5009 * 3: we may need to capture headers
5010 */
5011 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5012 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5013 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5014 txn->rsp.cap, s->fe->rsp_cap);
5015
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5016 /* 4: determine the transfer-length.
5017 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5018 * the presence of a message-body in a RESPONSE and its transfer length
5019 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5020 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5021 * All responses to the HEAD request method MUST NOT include a
5022 * message-body, even though the presence of entity-header fields
5023 * might lead one to believe they do. All 1xx (informational), 204
5024 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5025 * message-body. All other responses do include a message-body,
5026 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5027 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5028 * 1. Any response which "MUST NOT" include a message-body (such as the
5029 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5030 * always terminated by the first empty line after the header fields,
5031 * regardless of the entity-header fields present in the message.
5032 *
5033 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5034 * the "chunked" transfer-coding (Section 6.2) is used, the
5035 * transfer-length is defined by the use of this transfer-coding.
5036 * If a Transfer-Encoding header field is present and the "chunked"
5037 * transfer-coding is not present, the transfer-length is defined by
5038 * the sender closing the connection.
5039 *
5040 * 3. If a Content-Length header field is present, its decimal value in
5041 * OCTETs represents both the entity-length and the transfer-length.
5042 * If a message is received with both a Transfer-Encoding header
5043 * field and a Content-Length header field, the latter MUST be ignored.
5044 *
5045 * 4. If the message uses the media type "multipart/byteranges", and
5046 * the transfer-length is not otherwise specified, then this self-
5047 * delimiting media type defines the transfer-length. This media
5048 * type MUST NOT be used unless the sender knows that the recipient
5049 * can parse it; the presence in a request of a Range header with
5050 * multiple byte-range specifiers from a 1.1 client implies that the
5051 * client can parse multipart/byteranges responses.
5052 *
5053 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5054 */
5055
5056 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5057 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5058 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5059 * FIXME: should we parse anyway and return an error on chunked encoding ?
5060 */
5061 if (txn->meth == HTTP_METH_HEAD ||
5062 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5063 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5064 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5065 goto skip_content_length;
5066 }
5067
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5068 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5069 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5070 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5071 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5072 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5073 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5074 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5075 /* bad transfer-encoding (chunked followed by something else) */
5076 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5077 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5078 break;
5079 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5080 }
5081
5082 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5083 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5084 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5085 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5086 signed long long cl;
5087
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5088 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5089 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5090 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5091 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5092
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5093 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5094 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5095 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5096 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5097
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5098 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5099 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5100 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5101 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5102
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5103 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5104 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5105 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5106 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5107
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5108 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5109 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5110 }
5111
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5112 if (s->fe->comp || s->be->comp)
5113 select_compression_response_header(s, rep->buf);
5114
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5115 /* FIXME: we should also implement the multipart/byterange method.
5116 * For now on, we resort to close mode in this case (unknown length).
5117 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5118skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5119
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5120 /* end of job, return OK */
5121 rep->analysers &= ~an_bit;
5122 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5123 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5124 return 1;
5125}
5126
5127/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5128 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5129 * and updates t->rep->analysers. It might make sense to explode it into several
5130 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5131 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5132int 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]5133{
5134 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5135 struct http_msg *msg = &txn->rsp;
5136 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5137 struct cond_wordlist *wl;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5138
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5139 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]5140 now_ms, __FUNCTION__,
5141 t,
5142 rep,
5143 rep->rex, rep->wex,
5144 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5145 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5146 rep->analysers);
5147
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5148 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5149 return 0;
5150
5151 rep->analysers &= ~an_bit;
5152 rep->analyse_exp = TICK_ETERNITY;
5153
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5154 /* Now we have to check if we need to modify the Connection header.
5155 * This is more difficult on the response than it is on the request,
5156 * because we can have two different HTTP versions and we don't know
5157 * how the client will interprete a response. For instance, let's say
5158 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5159 * HTTP/1.1 response without any header. Maybe it will bound itself to
5160 * HTTP/1.0 because it only knows about it, and will consider the lack
5161 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5162 * the lack of header as a keep-alive. Thus we will use two flags
5163 * indicating how a request MAY be understood by the client. In case
5164 * of multiple possibilities, we'll fix the header to be explicit. If
5165 * ambiguous cases such as both close and keepalive are seen, then we
5166 * will fall back to explicit close. Note that we won't take risks with
5167 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5168 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5169 */
5170
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5171 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5172 txn->status == 101)) {
5173 /* Either we've established an explicit tunnel, or we're
5174 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5175 * to understand the next protocols. We have to switch to tunnel
5176 * mode, so that we transfer the request and responses then let
5177 * this protocol pass unmodified. When we later implement specific
5178 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5179 * header which contains information about that protocol for
5180 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5181 */
5182 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5183 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5184 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5185 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5186 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5187 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5188
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5189 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5190 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5191 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5192 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5193
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5194 /* now adjust header transformations depending on current state */
5195 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5196 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5197 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5198 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5199 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5200 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5201 else { /* SCL / KAL */
5202 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5203 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5204 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5205 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5206
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5207 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5208 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5209
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5210 /* Some keep-alive responses are converted to Server-close if
5211 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5212 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5213 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5214 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5215 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5216 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5217 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5218 }
5219
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5220 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5221 /*
5222 * 3: we will have to evaluate the filters.
5223 * As opposed to version 1.2, now they will be evaluated in the
5224 * filters order and not in the header order. This means that
5225 * each filter has to be validated among all headers.
5226 *
5227 * Filters are tried with ->be first, then with ->fe if it is
5228 * different from ->be.
5229 */
5230
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5231 cur_proxy = t->be;
5232 while (1) {
5233 struct proxy *rule_set = cur_proxy;
5234
5235 /* try headers filters */
5236 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5237 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5238 return_bad_resp:
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5239 if (target_srv(&t->target)) {
5240 target_srv(&t->target)->counters.failed_resp++;
5241 health_adjust(target_srv(&t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5242 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5243 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5244 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5245 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5246 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5247 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5248 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5249 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5250 if (!(t->flags & SN_ERR_MASK))
5251 t->flags |= SN_ERR_PRXCOND;
5252 if (!(t->flags & SN_FINST_MASK))
5253 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5254 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5255 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5256 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5257
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5258 /* has the response been denied ? */
5259 if (txn->flags & TX_SVDENY) {
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5260 if (target_srv(&t->target))
5261 target_srv(&t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5262
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5263 t->be->be_counters.denied_resp++;
5264 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5265 if (t->listener->counters)
5266 t->listener->counters->denied_resp++;
5267
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5268 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5269 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5270
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5271 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5272 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5273 if (txn->status < 200)
5274 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5275 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5276 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]5277 ret = acl_pass(ret);
5278 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5279 ret = !ret;
5280 if (!ret)
5281 continue;
5282 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5283 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5284 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5285 }
5286
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5287 /* check whether we're already working on the frontend */
5288 if (cur_proxy == t->fe)
5289 break;
5290 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5291 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5292
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5293 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5294 * We may be facing a 100-continue response, in which case this
5295 * is not the right response, and we're waiting for the next one.
5296 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5297 * next one.
5298 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5299 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5300 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5301 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5302 msg->msg_state = HTTP_MSG_RPBEFORE;
5303 txn->status = 0;
5304 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5305 return 1;
5306 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5307 else if (unlikely(txn->status < 200))
5308 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5309
5310 /* we don't have any 1xx status code now */
5311
5312 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5313 * 4: check for server cookie.
5314 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5315 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5316 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5317 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5318
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5319
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5320 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5321 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5322 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5323 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]5324 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5325
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5326 /*
5327 * 6: add server cookie in the response if needed
5328 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5329 if (target_srv(&t->target) && (t->be->ck_opts & PR_CK_INS) &&
5330 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5331 (!(t->flags & SN_DIRECT) ||
5332 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5333 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5334 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5335 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5336 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5337 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5338 int len;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5339 /* the server is known, it's not the one the client requested, or the
5340 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5341 * insert a set-cookie here, except if we want to insert only on POST
5342 * requests and this one isn't. Note that servers which don't have cookies
5343 * (eg: some backup servers) will return a full cookie removal request.
5344 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5345 if (!target_srv(&t->target)->cookie) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5346 len = sprintf(trash,
5347 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5348 t->be->cookie_name);
5349 }
5350 else {
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5351 len = sprintf(trash, "Set-Cookie: %s=%s", t->be->cookie_name, target_srv(&t->target)->cookie);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5352
5353 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5354 /* emit last_date, which is mandatory */
5355 trash[len++] = COOKIE_DELIM_DATE;
5356 s30tob64((date.tv_sec+3) >> 2, trash + len); len += 5;
5357 if (t->be->cookie_maxlife) {
5358 /* emit first_date, which is either the original one or
5359 * the current date.
5360 */
5361 trash[len++] = COOKIE_DELIM_DATE;
5362 s30tob64(txn->cookie_first_date ?
5363 txn->cookie_first_date >> 2 :
5364 (date.tv_sec+3) >> 2, trash + len);
5365 len += 5;
5366 }
5367 }
5368 len += sprintf(trash + len, "; path=/");
5369 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5370
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5371 if (t->be->cookie_domain)
5372 len += sprintf(trash+len, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5373
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5374 if (t->be->ck_opts & PR_CK_HTTPONLY)
5375 len += sprintf(trash+len, "; HttpOnly");
5376
5377 if (t->be->ck_opts & PR_CK_SECURE)
5378 len += sprintf(trash+len, "; Secure");
5379
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5380 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash, len) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5381 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5382
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5383 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5384 if (target_srv(&t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5385 /* the server did not change, only the date was updated */
5386 txn->flags |= TX_SCK_UPDATED;
5387 else
5388 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5389
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5390 /* Here, we will tell an eventual cache on the client side that we don't
5391 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5392 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5393 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5394 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5395 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5396
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5397 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5398
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5399 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5400 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5401 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5402 }
5403 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5404
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5405 /*
5406 * 7: check if result will be cacheable with a cookie.
5407 * We'll block the response if security checks have caught
5408 * nasty things such as a cacheable cookie.
5409 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5410 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5411 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5412 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5413
5414 /* we're in presence of a cacheable response containing
5415 * a set-cookie header. We'll block it as requested by
5416 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5417 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5418 if (target_srv(&t->target))
5419 target_srv(&t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5420
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5421 t->be->be_counters.denied_resp++;
5422 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5423 if (t->listener->counters)
5424 t->listener->counters->denied_resp++;
5425
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5426 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5427 t->be->id, target_srv(&t->target) ? target_srv(&t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5428 send_log(t->be, LOG_ALERT,
5429 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5430 t->be->id, target_srv(&t->target) ? target_srv(&t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5431 goto return_srv_prx_502;
5432 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5433
5434 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5435 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5436 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5437 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5438 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE)) {
5439 unsigned int want_flags = 0;
5440
5441 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5442 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5443 /* we want a keep-alive response here. Keep-alive header
5444 * required if either side is not 1.1.
5445 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5446 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5447 want_flags |= TX_CON_KAL_SET;
5448 }
5449 else {
5450 /* we want a close response here. Close header required if
5451 * the server is 1.1, regardless of the client.
5452 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5453 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5454 want_flags |= TX_CON_CLO_SET;
5455 }
5456
5457 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5458 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5459 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5460
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5461 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5462 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5463 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5464 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5465
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5466 /*************************************************************
5467 * OK, that's finished for the headers. We have done what we *
5468 * could. Let's switch to the DATA state. *
5469 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5470
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5471 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5472
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5473 /* if the user wants to log as soon as possible, without counting
5474 * bytes from the server, then this is the right moment. We have
5475 * to temporarily assign bytes_out to log what we currently have.
5476 */
5477 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
5478 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5479 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5480 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5481 t->logs.bytes_out = 0;
5482 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5483
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5484 /* Note: we must not try to cheat by jumping directly to DATA,
5485 * otherwise we would not let the client side wake up.
5486 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5487
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5488 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5489 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5490 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5491}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5492
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5493/* This function is an analyser which forwards response body (including chunk
5494 * sizes if any). It is called as soon as we must forward, even if we forward
5495 * zero byte. The only situation where it must not be called is when we're in
5496 * tunnel mode and we want to forward till the close. It's used both to forward
5497 * remaining data and to resync after end of body. It expects the msg_state to
5498 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5499 * 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]5500 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5501 * bytes of pending data + the headers if not already done (between sol and sov).
5502 * 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]5503 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5504int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5505{
5506 struct http_txn *txn = &s->txn;
5507 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5508 unsigned int bytes;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5509 static struct buffer *tmpbuf = NULL;
5510 int compressing = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5511
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5512 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5513 return 0;
5514
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5515 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]5516 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5517 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5518 /* Output closed while we were sending data. We must abort and
5519 * wake the other side up.
5520 */
5521 msg->msg_state = HTTP_MSG_ERROR;
5522 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5523 return 1;
5524 }
5525
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5526 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5527 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5528
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5529 /* no data */
5530 if (res->buf->i == 0)
5531 return 0;
5532
5533 /* this is the first time we need the compression buffer */
5534 if (s->comp_algo != NULL && tmpbuf == NULL) {
5535 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
5536 goto aborted_xfer; /* no memory */
5537 }
5538
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5539 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5540 /* we have msg->sov which points to the first byte of message body.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5541 * rep->buf.p still points to the beginning of the message and msg->sol
5542 * is still null. We forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5543 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5544 channel_forward(res, msg->sov);
5545 msg->next = 0;
5546 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5547
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5548 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5549 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5550 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5551 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5552 }
5553
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5554 if (s->comp_algo != NULL) {
5555 int ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
5556 if (ret < 0)
5557 goto missing_data; /* not enough spaces in buffers */
5558 compressing = 1;
5559 }
5560
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5561 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5562 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5563 /* we may have some data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5564 if (s->comp_algo == NULL) {
5565 bytes = msg->sov - msg->sol;
5566 if (msg->chunk_len || bytes) {
5567 msg->sol = msg->sov;
5568 msg->next -= bytes; /* will be forwarded */
5569 msg->chunk_len += bytes;
5570 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5571 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5572 }
5573
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5574 if (msg->msg_state == HTTP_MSG_DATA) {
5575 /* must still forward */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5576 if (compressing)
5577 http_compression_buffer_add_data(s, res->buf, tmpbuf);
5578
5579 if (res->to_forward || msg->chunk_len)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5580 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5581
5582 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5583 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5584 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5585 else
5586 msg->msg_state = HTTP_MSG_DONE;
5587 }
5588 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5589 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5590 * set ->sov and ->next to point to the body and switch to DATA or
5591 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5592 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5593 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5594
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5595 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5596 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5597 else if (ret < 0) {
5598 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5599 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]5600 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5601 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5602 /* skipping data if we are in compression mode */
5603 if (compressing && msg->chunk_len > 0) {
5604 b_adv(res->buf, msg->next);
5605 msg->next = 0;
5606 msg->sov = 0;
5607 msg->sol = 0;
5608 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5609 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5610 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5611 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5612 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5613 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5614
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5615 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5616 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5617 else if (ret < 0) {
5618 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5619 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]5620 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5621 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5622 /* skipping data in buffer for compression */
5623 if (compressing) {
5624 b_adv(res->buf, msg->next);
5625 msg->next = 0;
5626 msg->sov = 0;
5627 msg->sol = 0;
5628 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5629 /* we're in MSG_CHUNK_SIZE now */
5630 }
5631 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5632 int ret = http_forward_trailers(msg);
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5633
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5634 if (ret == 0)
5635 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5636 else if (ret < 0) {
5637 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5638 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]5639 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5640 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5641 if (compressing) {
5642 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5643 compressing = 0;
5644 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5645 /* we're in HTTP_MSG_DONE now */
5646 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5647 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5648 int old_state = msg->msg_state;
5649
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5650 if (compressing) {
5651 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5652 compressing = 0;
5653 }
5654
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5655 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5656 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5657 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5658 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5659 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5660 if (http_resync_states(s)) {
5661 http_silent_debug(__LINE__, s);
5662 /* some state changes occurred, maybe the analyser
5663 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5664 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5665 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5666 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5667 /* response errors are most likely due to
5668 * the client aborting the transfer.
5669 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5670 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5671 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5672 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5673 http_capture_bad_message(&s->be->invalid_rep, s, msg, old_state, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5674 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5675 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5676 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5677 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5678 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5679 }
5680 }
5681
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5682 missing_data:
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5683 if (compressing) {
5684 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
5685 compressing = 0;
5686 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5687 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5688 if (res->flags & CF_SHUTR) {
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5689 if (!(s->flags & SN_ERR_MASK))
5690 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5691 s->be->be_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5692 if (target_srv(&s->target))
5693 target_srv(&s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5694 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5695 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5696
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5697 if (res->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5698 goto aborted_xfer;
5699
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5700 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5701 if (!s->req->analysers)
5702 goto return_bad_res;
5703
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5704 /* forward any data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5705 if (s->comp_algo == NULL) {
5706 bytes = msg->sov - msg->sol;
5707 if (msg->chunk_len || bytes) {
5708 msg->sol = msg->sov;
5709 msg->next -= bytes; /* will be forwarded */
5710 msg->chunk_len += bytes;
5711 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5712 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5713 }
5714
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5715 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5716 * 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]5717 * Similarly, with keep-alive on the client side, we don't want to forward a
5718 * close.
5719 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5720 if ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5721 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5722 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5723 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5724
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5725 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5726 * 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]5727 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5728 * modes are already handled by the stream sock layer. We must not do
5729 * this in content-length mode because it could present the MSG_MORE
5730 * flag with the last block of forwarded data, which would cause an
5731 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5732 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5733 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5734 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5735
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5736 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5737 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5738 return 0;
5739
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5740 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5741 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5742 if (target_srv(&s->target))
5743 target_srv(&s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5744
5745 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5746 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]5747 /* don't send any error message as we're in the body */
5748 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5749 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5750 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5751 if (target_srv(&s->target))
5752 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5753
5754 if (!(s->flags & SN_ERR_MASK))
5755 s->flags |= SN_ERR_PRXCOND;
5756 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5757 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5758 return 0;
5759
5760 aborted_xfer:
5761 txn->rsp.msg_state = HTTP_MSG_ERROR;
5762 /* don't send any error message as we're in the body */
5763 stream_int_retnclose(res->cons, NULL);
5764 res->analysers = 0;
5765 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
5766
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5767 s->fe->fe_counters.cli_aborts++;
5768 s->be->be_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5769 if (target_srv(&s->target))
5770 target_srv(&s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5771
5772 if (!(s->flags & SN_ERR_MASK))
5773 s->flags |= SN_ERR_CLICL;
5774 if (!(s->flags & SN_FINST_MASK))
5775 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5776 return 0;
5777}
5778
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5779/* Iterate the same filter through all request headers.
5780 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5781 * Since it can manage the switch to another backend, it updates the per-proxy
5782 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5783 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5784int 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]5785{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5786 char term;
5787 char *cur_ptr, *cur_end, *cur_next;
5788 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5789 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5790 struct hdr_idx_elem *cur_hdr;
5791 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]5792
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5793 last_hdr = 0;
5794
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5795 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5796 old_idx = 0;
5797
5798 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5799 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5800 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5801 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5802 (exp->action == ACT_ALLOW ||
5803 exp->action == ACT_DENY ||
5804 exp->action == ACT_TARPIT))
5805 return 0;
5806
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5807 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5808 if (!cur_idx)
5809 break;
5810
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5811 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5812 cur_ptr = cur_next;
5813 cur_end = cur_ptr + cur_hdr->len;
5814 cur_next = cur_end + cur_hdr->cr + 1;
5815
5816 /* Now we have one header between cur_ptr and cur_end,
5817 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5818 */
5819
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5820 /* The annoying part is that pattern matching needs
5821 * that we modify the contents to null-terminate all
5822 * strings before testing them.
5823 */
5824
5825 term = *cur_end;
5826 *cur_end = '\0';
5827
5828 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5829 switch (exp->action) {
5830 case ACT_SETBE:
5831 /* It is not possible to jump a second time.
5832 * FIXME: should we return an HTTP/500 here so that
5833 * the admin knows there's a problem ?
5834 */
5835 if (t->be != t->fe)
5836 break;
5837
5838 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]5839 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5840 last_hdr = 1;
5841 break;
5842
5843 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5844 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5845 last_hdr = 1;
5846 break;
5847
5848 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5849 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5850 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5851
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5852 t->fe->fe_counters.denied_req++;
5853 if (t->fe != t->be)
5854 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5855 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5856 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5857
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5858 break;
5859
5860 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5861 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5862 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5863
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5864 t->fe->fe_counters.denied_req++;
5865 if (t->fe != t->be)
5866 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5867 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5868 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5869
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5870 break;
5871
5872 case ACT_REPLACE:
5873 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5874 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash, len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5875 /* FIXME: if the user adds a newline in the replacement, the
5876 * index will not be recalculated for now, and the new line
5877 * will not be counted as a new header.
5878 */
5879
5880 cur_end += delta;
5881 cur_next += delta;
5882 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5883 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5884 break;
5885
5886 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5887 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5888 cur_next += delta;
5889
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5890 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5891 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
5892 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5893 cur_hdr->len = 0;
5894 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]5895 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5896 break;
5897
5898 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5899 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5900 if (cur_end)
5901 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5902
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5903 /* keep the link from this header to next one in case of later
5904 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5905 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5906 old_idx = cur_idx;
5907 }
5908 return 0;
5909}
5910
5911
5912/* Apply the filter to the request line.
5913 * Returns 0 if nothing has been done, 1 if the filter has been applied,
5914 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5915 * Since it can manage the switch to another backend, it updates the per-proxy
5916 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5917 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5918int 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]5919{
5920 char term;
5921 char *cur_ptr, *cur_end;
5922 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5923 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5924 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5925
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5926
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5927 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5928 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5929 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5930 (exp->action == ACT_ALLOW ||
5931 exp->action == ACT_DENY ||
5932 exp->action == ACT_TARPIT))
5933 return 0;
5934 else if (exp->action == ACT_REMOVE)
5935 return 0;
5936
5937 done = 0;
5938
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5939 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5940 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5941
5942 /* Now we have the request line between cur_ptr and cur_end */
5943
5944 /* The annoying part is that pattern matching needs
5945 * that we modify the contents to null-terminate all
5946 * strings before testing them.
5947 */
5948
5949 term = *cur_end;
5950 *cur_end = '\0';
5951
5952 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5953 switch (exp->action) {
5954 case ACT_SETBE:
5955 /* It is not possible to jump a second time.
5956 * FIXME: should we return an HTTP/500 here so that
5957 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5958 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5959 if (t->be != t->fe)
5960 break;
5961
5962 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]5963 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5964 done = 1;
5965 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5966
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5967 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5968 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5969 done = 1;
5970 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5971
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5972 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5973 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5974
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5975 t->fe->fe_counters.denied_req++;
5976 if (t->fe != t->be)
5977 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5978 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5979 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5980
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5981 done = 1;
5982 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5983
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5984 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5985 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5986
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5987 t->fe->fe_counters.denied_req++;
5988 if (t->fe != t->be)
5989 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5990 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5991 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5992
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5993 done = 1;
5994 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5995
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5996 case ACT_REPLACE:
5997 *cur_end = term; /* restore the string terminator */
5998 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5999 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash, len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6000 /* FIXME: if the user adds a newline in the replacement, the
6001 * index will not be recalculated for now, and the new line
6002 * will not be counted as a new header.
6003 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6004
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6005 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6006 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6007 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6008 HTTP_MSG_RQMETH,
6009 cur_ptr, cur_end + 1,
6010 NULL, NULL);
6011 if (unlikely(!cur_end))
6012 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6013
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6014 /* we have a full request and we know that we have either a CR
6015 * or an LF at <ptr>.
6016 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6017 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6018 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]6019 /* there is no point trying this regex on headers */
6020 return 1;
6021 }
6022 }
6023 *cur_end = term; /* restore the string terminator */
6024 return done;
6025}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6026
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6027
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6028
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6029/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6030 * 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]6031 * 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]6032 * unparsable request. Since it can manage the switch to another backend, it
6033 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6034 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6035int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6036{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6037 struct http_txn *txn = &s->txn;
6038 struct hdr_exp *exp;
6039
6040 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6041 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6042
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6043 /*
6044 * The interleaving of transformations and verdicts
6045 * makes it difficult to decide to continue or stop
6046 * the evaluation.
6047 */
6048
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6049 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6050 break;
6051
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6052 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6053 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6054 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6055 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6056
6057 /* if this filter had a condition, evaluate it now and skip to
6058 * next filter if the condition does not match.
6059 */
6060 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6061 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]6062 ret = acl_pass(ret);
6063 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6064 ret = !ret;
6065
6066 if (!ret)
6067 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6068 }
6069
6070 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6071 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6072 if (unlikely(ret < 0))
6073 return -1;
6074
6075 if (likely(ret == 0)) {
6076 /* The filter did not match the request, it can be
6077 * iterated through all headers.
6078 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6079 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6080 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6081 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6082 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6083}
6084
6085
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6086
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6087/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6088 * Try to retrieve the server associated to the appsession.
6089 * If the server is found, it's assigned to the session.
6090 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6091void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6092 struct http_txn *txn = &t->txn;
6093 appsess *asession = NULL;
6094 char *sessid_temp = NULL;
6095
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6096 if (len > t->be->appsession_len) {
6097 len = t->be->appsession_len;
6098 }
6099
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6100 if (t->be->options2 & PR_O2_AS_REQL) {
6101 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6102 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6103 /* 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]6104 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6105 }
6106
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6107 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6108 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6109 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6110 return;
6111 }
6112
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6113 memcpy(txn->sessid, buf, len);
6114 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6115 }
6116
6117 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6118 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6119 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6120 return;
6121 }
6122
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6123 memcpy(sessid_temp, buf, len);
6124 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6125
6126 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6127 /* free previously allocated memory */
6128 pool_free2(apools.sessid, sessid_temp);
6129
6130 if (asession != NULL) {
6131 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6132 if (!(t->be->options2 & PR_O2_AS_REQL))
6133 asession->request_count++;
6134
6135 if (asession->serverid != NULL) {
6136 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6137
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6138 while (srv) {
6139 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6140 if ((srv->state & SRV_RUNNING) ||
6141 (t->be->options & PR_O_PERSIST) ||
6142 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6143 /* we found the server and it's usable */
6144 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6145 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6146 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]6147 set_target_server(&t->target, srv);
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6148
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6149 break;
6150 } else {
6151 txn->flags &= ~TX_CK_MASK;
6152 txn->flags |= TX_CK_DOWN;
6153 }
6154 }
6155 srv = srv->next;
6156 }
6157 }
6158 }
6159}
6160
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6161/* Find the end of a cookie value contained between <s> and <e>. It works the
6162 * same way as with headers above except that the semi-colon also ends a token.
6163 * See RFC2965 for more information. Note that it requires a valid header to
6164 * return a valid result.
6165 */
6166char *find_cookie_value_end(char *s, const char *e)
6167{
6168 int quoted, qdpair;
6169
6170 quoted = qdpair = 0;
6171 for (; s < e; s++) {
6172 if (qdpair) qdpair = 0;
6173 else if (quoted) {
6174 if (*s == '\\') qdpair = 1;
6175 else if (*s == '"') quoted = 0;
6176 }
6177 else if (*s == '"') quoted = 1;
6178 else if (*s == ',' || *s == ';') return s;
6179 }
6180 return s;
6181}
6182
6183/* Delete a value in a header between delimiters <from> and <next> in buffer
6184 * <buf>. The number of characters displaced is returned, and the pointer to
6185 * the first delimiter is updated if required. The function tries as much as
6186 * possible to respect the following principles :
6187 * - replace <from> delimiter by the <next> one unless <from> points to a
6188 * colon, in which case <next> is simply removed
6189 * - set exactly one space character after the new first delimiter, unless
6190 * there are not enough characters in the block being moved to do so.
6191 * - remove unneeded spaces before the previous delimiter and after the new
6192 * one.
6193 *
6194 * It is the caller's responsibility to ensure that :
6195 * - <from> points to a valid delimiter or the colon ;
6196 * - <next> points to a valid delimiter or the final CR/LF ;
6197 * - there are non-space chars before <from> ;
6198 * - there is a CR/LF at or after <next>.
6199 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6200int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6201{
6202 char *prev = *from;
6203
6204 if (*prev == ':') {
6205 /* We're removing the first value, preserve the colon and add a
6206 * space if possible.
6207 */
6208 if (!http_is_crlf[(unsigned char)*next])
6209 next++;
6210 prev++;
6211 if (prev < next)
6212 *prev++ = ' ';
6213
6214 while (http_is_spht[(unsigned char)*next])
6215 next++;
6216 } else {
6217 /* Remove useless spaces before the old delimiter. */
6218 while (http_is_spht[(unsigned char)*(prev-1)])
6219 prev--;
6220 *from = prev;
6221
6222 /* copy the delimiter and if possible a space if we're
6223 * not at the end of the line.
6224 */
6225 if (!http_is_crlf[(unsigned char)*next]) {
6226 *prev++ = *next++;
6227 if (prev + 1 < next)
6228 *prev++ = ' ';
6229 while (http_is_spht[(unsigned char)*next])
6230 next++;
6231 }
6232 }
6233 return buffer_replace2(buf, prev, next, NULL, 0);
6234}
6235
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6236/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6237 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6238 * desirable to call it only when needed. This code is quite complex because
6239 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6240 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6241 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6242void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6243{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6244 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6245 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6246 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6247 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6248 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6249
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6250 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6251 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6252 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6253
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6254 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6255 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6256 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6257
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6258 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6259 hdr_beg = hdr_next;
6260 hdr_end = hdr_beg + cur_hdr->len;
6261 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6262
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6263 /* We have one full header between hdr_beg and hdr_end, and the
6264 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6265 * "Cookie:" headers.
6266 */
6267
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6268 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6269 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6270 old_idx = cur_idx;
6271 continue;
6272 }
6273
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6274 del_from = NULL; /* nothing to be deleted */
6275 preserve_hdr = 0; /* assume we may kill the whole header */
6276
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6277 /* Now look for cookies. Conforming to RFC2109, we have to support
6278 * attributes whose name begin with a '$', and associate them with
6279 * the right cookie, if we want to delete this cookie.
6280 * So there are 3 cases for each cookie read :
6281 * 1) it's a special attribute, beginning with a '$' : ignore it.
6282 * 2) it's a server id cookie that we *MAY* want to delete : save
6283 * some pointers on it (last semi-colon, beginning of cookie...)
6284 * 3) it's an application cookie : we *MAY* have to delete a previous
6285 * "special" cookie.
6286 * At the end of loop, if a "special" cookie remains, we may have to
6287 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6288 * *MUST* delete it.
6289 *
6290 * Note: RFC2965 is unclear about the processing of spaces around
6291 * the equal sign in the ATTR=VALUE form. A careful inspection of
6292 * the RFC explicitly allows spaces before it, and not within the
6293 * tokens (attrs or values). An inspection of RFC2109 allows that
6294 * too but section 10.1.3 lets one think that spaces may be allowed
6295 * after the equal sign too, resulting in some (rare) buggy
6296 * implementations trying to do that. So let's do what servers do.
6297 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6298 * allowed quoted strings in values, with any possible character
6299 * after a backslash, including control chars and delimitors, which
6300 * causes parsing to become ambiguous. Browsers also allow spaces
6301 * within values even without quotes.
6302 *
6303 * We have to keep multiple pointers in order to support cookie
6304 * removal at the beginning, middle or end of header without
6305 * corrupting the header. All of these headers are valid :
6306 *
6307 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6308 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6309 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6310 * | | | | | | | | |
6311 * | | | | | | | | hdr_end <--+
6312 * | | | | | | | +--> next
6313 * | | | | | | +----> val_end
6314 * | | | | | +-----------> val_beg
6315 * | | | | +--------------> equal
6316 * | | | +----------------> att_end
6317 * | | +---------------------> att_beg
6318 * | +--------------------------> prev
6319 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6320 */
6321
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6322 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6323 /* Iterate through all cookies on this line */
6324
6325 /* find att_beg */
6326 att_beg = prev + 1;
6327 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6328 att_beg++;
6329
6330 /* find att_end : this is the first character after the last non
6331 * space before the equal. It may be equal to hdr_end.
6332 */
6333 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6334
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6335 while (equal < hdr_end) {
6336 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6337 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6338 if (http_is_spht[(unsigned char)*equal++])
6339 continue;
6340 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6341 }
6342
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6343 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6344 * is between <att_beg> and <equal>, both may be identical.
6345 */
6346
6347 /* look for end of cookie if there is an equal sign */
6348 if (equal < hdr_end && *equal == '=') {
6349 /* look for the beginning of the value */
6350 val_beg = equal + 1;
6351 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6352 val_beg++;
6353
6354 /* find the end of the value, respecting quotes */
6355 next = find_cookie_value_end(val_beg, hdr_end);
6356
6357 /* make val_end point to the first white space or delimitor after the value */
6358 val_end = next;
6359 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6360 val_end--;
6361 } else {
6362 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6363 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6364
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6365 /* We have nothing to do with attributes beginning with '$'. However,
6366 * they will automatically be removed if a header before them is removed,
6367 * since they're supposed to be linked together.
6368 */
6369 if (*att_beg == '$')
6370 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6371
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6372 /* Ignore cookies with no equal sign */
6373 if (equal == next) {
6374 /* This is not our cookie, so we must preserve it. But if we already
6375 * scheduled another cookie for removal, we cannot remove the
6376 * complete header, but we can remove the previous block itself.
6377 */
6378 preserve_hdr = 1;
6379 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6380 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6381 val_end += delta;
6382 next += delta;
6383 hdr_end += delta;
6384 hdr_next += delta;
6385 cur_hdr->len += delta;
6386 http_msg_move_end(&txn->req, delta);
6387 prev = del_from;
6388 del_from = NULL;
6389 }
6390 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6391 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6392
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6393 /* if there are spaces around the equal sign, we need to
6394 * strip them otherwise we'll get trouble for cookie captures,
6395 * or even for rewrites. Since this happens extremely rarely,
6396 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6397 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6398 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6399 int stripped_before = 0;
6400 int stripped_after = 0;
6401
6402 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6403 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6404 equal += stripped_before;
6405 val_beg += stripped_before;
6406 }
6407
6408 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6409 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6410 val_beg += stripped_after;
6411 stripped_before += stripped_after;
6412 }
6413
6414 val_end += stripped_before;
6415 next += stripped_before;
6416 hdr_end += stripped_before;
6417 hdr_next += stripped_before;
6418 cur_hdr->len += stripped_before;
6419 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6420 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6421 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6422
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6423 /* First, let's see if we want to capture this cookie. We check
6424 * that we don't already have a client side cookie, because we
6425 * can only capture one. Also as an optimisation, we ignore
6426 * cookies shorter than the declared name.
6427 */
6428 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6429 (val_end - att_beg >= t->fe->capture_namelen) &&
6430 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6431 int log_len = val_end - att_beg;
6432
6433 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6434 Alert("HTTP logging : out of memory.\n");
6435 } else {
6436 if (log_len > t->fe->capture_len)
6437 log_len = t->fe->capture_len;
6438 memcpy(txn->cli_cookie, att_beg, log_len);
6439 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6440 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6441 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6442
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6443 /* Persistence cookies in passive, rewrite or insert mode have the
6444 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6445 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6446 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6447 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6448 * For cookies in prefix mode, the form is :
6449 *
6450 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6451 */
6452 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6453 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6454 struct server *srv = t->be->srv;
6455 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6456
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6457 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6458 * have the server ID between val_beg and delim, and the original cookie between
6459 * delim+1 and val_end. Otherwise, delim==val_end :
6460 *
6461 * Cookie: NAME=SRV; # in all but prefix modes
6462 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6463 * | || || | |+-> next
6464 * | || || | +--> val_end
6465 * | || || +---------> delim
6466 * | || |+------------> val_beg
6467 * | || +-------------> att_end = equal
6468 * | |+-----------------> att_beg
6469 * | +------------------> prev
6470 * +-------------------------> hdr_beg
6471 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6472
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6473 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6474 for (delim = val_beg; delim < val_end; delim++)
6475 if (*delim == COOKIE_DELIM)
6476 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6477 } else {
6478 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6479 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6480 /* Now check if the cookie contains a date field, which would
6481 * appear after a vertical bar ('|') just after the server name
6482 * and before the delimiter.
6483 */
6484 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6485 if (vbar1) {
6486 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6487 * right is the last seen date. It is a base64 encoded
6488 * 30-bit value representing the UNIX date since the
6489 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6490 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6491 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6492 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6493 if (val_end - vbar1 >= 5) {
6494 val = b64tos30(vbar1);
6495 if (val > 0)
6496 txn->cookie_last_date = val << 2;
6497 }
6498 /* look for a second vertical bar */
6499 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6500 if (vbar1 && (val_end - vbar1 > 5)) {
6501 val = b64tos30(vbar1 + 1);
6502 if (val > 0)
6503 txn->cookie_first_date = val << 2;
6504 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6505 }
6506 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6507
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6508 /* if the cookie has an expiration date and the proxy wants to check
6509 * it, then we do that now. We first check if the cookie is too old,
6510 * then only if it has expired. We detect strict overflow because the
6511 * time resolution here is not great (4 seconds). Cookies with dates
6512 * in the future are ignored if their offset is beyond one day. This
6513 * allows an admin to fix timezone issues without expiring everyone
6514 * and at the same time avoids keeping unwanted side effects for too
6515 * long.
6516 */
6517 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6518 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6519 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6520 txn->flags &= ~TX_CK_MASK;
6521 txn->flags |= TX_CK_OLD;
6522 delim = val_beg; // let's pretend we have not found the cookie
6523 txn->cookie_first_date = 0;
6524 txn->cookie_last_date = 0;
6525 }
6526 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6527 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6528 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6529 txn->flags &= ~TX_CK_MASK;
6530 txn->flags |= TX_CK_EXPIRED;
6531 delim = val_beg; // let's pretend we have not found the cookie
6532 txn->cookie_first_date = 0;
6533 txn->cookie_last_date = 0;
6534 }
6535
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6536 /* Here, we'll look for the first running server which supports the cookie.
6537 * This allows to share a same cookie between several servers, for example
6538 * to dedicate backup servers to specific servers only.
6539 * However, to prevent clients from sticking to cookie-less backup server
6540 * when they have incidentely learned an empty cookie, we simply ignore
6541 * empty cookies and mark them as invalid.
6542 * The same behaviour is applied when persistence must be ignored.
6543 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6544 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6545 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6546
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6547 while (srv) {
6548 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6549 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6550 if ((srv->state & SRV_RUNNING) ||
6551 (t->be->options & PR_O_PERSIST) ||
6552 (t->flags & SN_FORCE_PRST)) {
6553 /* we found the server and we can use it */
6554 txn->flags &= ~TX_CK_MASK;
6555 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6556 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]6557 set_target_server(&t->target, srv);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6558 break;
6559 } else {
6560 /* we found a server, but it's down,
6561 * mark it as such and go on in case
6562 * another one is available.
6563 */
6564 txn->flags &= ~TX_CK_MASK;
6565 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6566 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6567 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6568 srv = srv->next;
6569 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6570
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6571 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6572 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6573 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6574 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6575 txn->flags |= TX_CK_UNUSED;
6576 else
6577 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6578 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6579
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6580 /* depending on the cookie mode, we may have to either :
6581 * - delete the complete cookie if we're in insert+indirect mode, so that
6582 * the server never sees it ;
6583 * - remove the server id from the cookie value, and tag the cookie as an
6584 * application cookie so that it does not get accidentely removed later,
6585 * if we're in cookie prefix mode
6586 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6587 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6588 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6589
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6590 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6591 val_end += delta;
6592 next += delta;
6593 hdr_end += delta;
6594 hdr_next += delta;
6595 cur_hdr->len += delta;
6596 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6597
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6598 del_from = NULL;
6599 preserve_hdr = 1; /* we want to keep this cookie */
6600 }
6601 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6602 (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]6603 del_from = prev;
6604 }
6605 } else {
6606 /* This is not our cookie, so we must preserve it. But if we already
6607 * scheduled another cookie for removal, we cannot remove the
6608 * complete header, but we can remove the previous block itself.
6609 */
6610 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6611
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6612 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6613 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]6614 if (att_beg >= del_from)
6615 att_beg += delta;
6616 if (att_end >= del_from)
6617 att_end += delta;
6618 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6619 val_end += delta;
6620 next += delta;
6621 hdr_end += delta;
6622 hdr_next += delta;
6623 cur_hdr->len += delta;
6624 http_msg_move_end(&txn->req, delta);
6625 prev = del_from;
6626 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6627 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6628 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6629
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6630 /* Look for the appsession cookie unless persistence must be ignored */
6631 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
6632 int cmp_len, value_len;
6633 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]6634
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6635 if (t->be->options2 & PR_O2_AS_PFX) {
6636 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6637 value_begin = att_beg + t->be->appsession_name_len;
6638 value_len = val_end - att_beg - t->be->appsession_name_len;
6639 } else {
6640 cmp_len = att_end - att_beg;
6641 value_begin = val_beg;
6642 value_len = val_end - val_beg;
6643 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6644
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6645 /* let's see if the cookie is our appcookie */
6646 if (cmp_len == t->be->appsession_name_len &&
6647 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
6648 manage_client_side_appsession(t, value_begin, value_len);
6649 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6650 }
6651
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6652 /* continue with next cookie on this header line */
6653 att_beg = next;
6654 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6655
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6656 /* There are no more cookies on this line.
6657 * We may still have one (or several) marked for deletion at the
6658 * end of the line. We must do this now in two ways :
6659 * - if some cookies must be preserved, we only delete from the
6660 * mark to the end of line ;
6661 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6662 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6663 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6664 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6665 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6666 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6667 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6668 cur_hdr->len += delta;
6669 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6670 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6671
6672 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6673 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6674 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6675 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6676 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6677 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6678 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6679 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6680 }
6681
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6682 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6683 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6684 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6685}
6686
6687
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6688/* Iterate the same filter through all response headers contained in <rtr>.
6689 * Returns 1 if this filter can be stopped upon return, otherwise 0.
6690 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6691int 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]6692{
6693 char term;
6694 char *cur_ptr, *cur_end, *cur_next;
6695 int cur_idx, old_idx, last_hdr;
6696 struct http_txn *txn = &t->txn;
6697 struct hdr_idx_elem *cur_hdr;
6698 int len, delta;
6699
6700 last_hdr = 0;
6701
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6702 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6703 old_idx = 0;
6704
6705 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6706 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6707 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6708 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6709 (exp->action == ACT_ALLOW ||
6710 exp->action == ACT_DENY))
6711 return 0;
6712
6713 cur_idx = txn->hdr_idx.v[old_idx].next;
6714 if (!cur_idx)
6715 break;
6716
6717 cur_hdr = &txn->hdr_idx.v[cur_idx];
6718 cur_ptr = cur_next;
6719 cur_end = cur_ptr + cur_hdr->len;
6720 cur_next = cur_end + cur_hdr->cr + 1;
6721
6722 /* Now we have one header between cur_ptr and cur_end,
6723 * and the next header starts at cur_next.
6724 */
6725
6726 /* The annoying part is that pattern matching needs
6727 * that we modify the contents to null-terminate all
6728 * strings before testing them.
6729 */
6730
6731 term = *cur_end;
6732 *cur_end = '\0';
6733
6734 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6735 switch (exp->action) {
6736 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6737 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6738 last_hdr = 1;
6739 break;
6740
6741 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6742 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6743 last_hdr = 1;
6744 break;
6745
6746 case ACT_REPLACE:
6747 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6748 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash, len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6749 /* FIXME: if the user adds a newline in the replacement, the
6750 * index will not be recalculated for now, and the new line
6751 * will not be counted as a new header.
6752 */
6753
6754 cur_end += delta;
6755 cur_next += delta;
6756 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6757 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6758 break;
6759
6760 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6761 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6762 cur_next += delta;
6763
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6764 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6765 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6766 txn->hdr_idx.used--;
6767 cur_hdr->len = 0;
6768 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6769 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6770 break;
6771
6772 }
6773 }
6774 if (cur_end)
6775 *cur_end = term; /* restore the string terminator */
6776
6777 /* keep the link from this header to next one in case of later
6778 * removal of next header.
6779 */
6780 old_idx = cur_idx;
6781 }
6782 return 0;
6783}
6784
6785
6786/* Apply the filter to the status line in the response buffer <rtr>.
6787 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6788 * or -1 if a replacement resulted in an invalid status line.
6789 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6790int 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]6791{
6792 char term;
6793 char *cur_ptr, *cur_end;
6794 int done;
6795 struct http_txn *txn = &t->txn;
6796 int len, delta;
6797
6798
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6799 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6800 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6801 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6802 (exp->action == ACT_ALLOW ||
6803 exp->action == ACT_DENY))
6804 return 0;
6805 else if (exp->action == ACT_REMOVE)
6806 return 0;
6807
6808 done = 0;
6809
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6810 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]6811 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6812
6813 /* Now we have the status line between cur_ptr and cur_end */
6814
6815 /* The annoying part is that pattern matching needs
6816 * that we modify the contents to null-terminate all
6817 * strings before testing them.
6818 */
6819
6820 term = *cur_end;
6821 *cur_end = '\0';
6822
6823 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6824 switch (exp->action) {
6825 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6826 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6827 done = 1;
6828 break;
6829
6830 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6831 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6832 done = 1;
6833 break;
6834
6835 case ACT_REPLACE:
6836 *cur_end = term; /* restore the string terminator */
6837 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6838 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash, len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6839 /* FIXME: if the user adds a newline in the replacement, the
6840 * index will not be recalculated for now, and the new line
6841 * will not be counted as a new header.
6842 */
6843
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6844 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6845 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6846 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]6847 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6848 cur_ptr, cur_end + 1,
6849 NULL, NULL);
6850 if (unlikely(!cur_end))
6851 return -1;
6852
6853 /* we have a full respnse and we know that we have either a CR
6854 * or an LF at <ptr>.
6855 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6856 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]6857 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]6858 /* there is no point trying this regex on headers */
6859 return 1;
6860 }
6861 }
6862 *cur_end = term; /* restore the string terminator */
6863 return done;
6864}
6865
6866
6867
6868/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6869 * 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]6870 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
6871 * unparsable response.
6872 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6873int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6874{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6875 struct http_txn *txn = &s->txn;
6876 struct hdr_exp *exp;
6877
6878 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6879 int ret;
6880
6881 /*
6882 * The interleaving of transformations and verdicts
6883 * makes it difficult to decide to continue or stop
6884 * the evaluation.
6885 */
6886
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6887 if (txn->flags & TX_SVDENY)
6888 break;
6889
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6890 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6891 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
6892 exp->action == ACT_PASS)) {
6893 exp = exp->next;
6894 continue;
6895 }
6896
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6897 /* if this filter had a condition, evaluate it now and skip to
6898 * next filter if the condition does not match.
6899 */
6900 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6901 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]6902 ret = acl_pass(ret);
6903 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6904 ret = !ret;
6905 if (!ret)
6906 continue;
6907 }
6908
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6909 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6910 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6911 if (unlikely(ret < 0))
6912 return -1;
6913
6914 if (likely(ret == 0)) {
6915 /* The filter did not match the response, it can be
6916 * iterated through all headers.
6917 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6918 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6919 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6920 }
6921 return 0;
6922}
6923
6924
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6925/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6926 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6927 * desirable to call it only when needed. This function is also used when we
6928 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6929 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6930void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6931{
6932 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6933 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6934 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6935 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6936 char *hdr_beg, *hdr_end, *hdr_next;
6937 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6938
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6939 /* Iterate through the headers.
6940 * we start with the start line.
6941 */
6942 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6943 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6944
6945 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
6946 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6947 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6948
6949 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6950 hdr_beg = hdr_next;
6951 hdr_end = hdr_beg + cur_hdr->len;
6952 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6953
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6954 /* We have one full header between hdr_beg and hdr_end, and the
6955 * next header starts at hdr_next. We're only interested in
6956 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6957 */
6958
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6959 is_cookie2 = 0;
6960 prev = hdr_beg + 10;
6961 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6962 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6963 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
6964 if (!val) {
6965 old_idx = cur_idx;
6966 continue;
6967 }
6968 is_cookie2 = 1;
6969 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6970 }
6971
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6972 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
6973 * <prev> points to the colon.
6974 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6975 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6976
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6977 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
6978 * check-cache is enabled) and we are not interested in checking
6979 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]6980 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]6981 if (t->be->cookie_name == NULL &&
6982 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]6983 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6984 return;
6985
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6986 /* OK so now we know we have to process this response cookie.
6987 * The format of the Set-Cookie header is slightly different
6988 * from the format of the Cookie header in that it does not
6989 * support the comma as a cookie delimiter (thus the header
6990 * cannot be folded) because the Expires attribute described in
6991 * the original Netscape's spec may contain an unquoted date
6992 * with a comma inside. We have to live with this because
6993 * many browsers don't support Max-Age and some browsers don't
6994 * support quoted strings. However the Set-Cookie2 header is
6995 * clean.
6996 *
6997 * We have to keep multiple pointers in order to support cookie
6998 * removal at the beginning, middle or end of header without
6999 * corrupting the header (in case of set-cookie2). A special
7000 * pointer, <scav> points to the beginning of the set-cookie-av
7001 * fields after the first semi-colon. The <next> pointer points
7002 * either to the end of line (set-cookie) or next unquoted comma
7003 * (set-cookie2). All of these headers are valid :
7004 *
7005 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7006 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7007 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7008 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7009 * | | | | | | | | | |
7010 * | | | | | | | | +-> next hdr_end <--+
7011 * | | | | | | | +------------> scav
7012 * | | | | | | +--------------> val_end
7013 * | | | | | +--------------------> val_beg
7014 * | | | | +----------------------> equal
7015 * | | | +------------------------> att_end
7016 * | | +----------------------------> att_beg
7017 * | +------------------------------> prev
7018 * +-----------------------------------------> hdr_beg
7019 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7020
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7021 for (; prev < hdr_end; prev = next) {
7022 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7023
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7024 /* find att_beg */
7025 att_beg = prev + 1;
7026 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7027 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7028
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7029 /* find att_end : this is the first character after the last non
7030 * space before the equal. It may be equal to hdr_end.
7031 */
7032 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7033
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7034 while (equal < hdr_end) {
7035 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7036 break;
7037 if (http_is_spht[(unsigned char)*equal++])
7038 continue;
7039 att_end = equal;
7040 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7041
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7042 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7043 * is between <att_beg> and <equal>, both may be identical.
7044 */
7045
7046 /* look for end of cookie if there is an equal sign */
7047 if (equal < hdr_end && *equal == '=') {
7048 /* look for the beginning of the value */
7049 val_beg = equal + 1;
7050 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7051 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7052
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7053 /* find the end of the value, respecting quotes */
7054 next = find_cookie_value_end(val_beg, hdr_end);
7055
7056 /* make val_end point to the first white space or delimitor after the value */
7057 val_end = next;
7058 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7059 val_end--;
7060 } else {
7061 /* <equal> points to next comma, semi-colon or EOL */
7062 val_beg = val_end = next = equal;
7063 }
7064
7065 if (next < hdr_end) {
7066 /* Set-Cookie2 supports multiple cookies, and <next> points to
7067 * a colon or semi-colon before the end. So skip all attr-value
7068 * pairs and look for the next comma. For Set-Cookie, since
7069 * commas are permitted in values, skip to the end.
7070 */
7071 if (is_cookie2)
7072 next = find_hdr_value_end(next, hdr_end);
7073 else
7074 next = hdr_end;
7075 }
7076
7077 /* Now everything is as on the diagram above */
7078
7079 /* Ignore cookies with no equal sign */
7080 if (equal == val_end)
7081 continue;
7082
7083 /* If there are spaces around the equal sign, we need to
7084 * strip them otherwise we'll get trouble for cookie captures,
7085 * or even for rewrites. Since this happens extremely rarely,
7086 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7087 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7088 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7089 int stripped_before = 0;
7090 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7091
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7092 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7093 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7094 equal += stripped_before;
7095 val_beg += stripped_before;
7096 }
7097
7098 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7099 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7100 val_beg += stripped_after;
7101 stripped_before += stripped_after;
7102 }
7103
7104 val_end += stripped_before;
7105 next += stripped_before;
7106 hdr_end += stripped_before;
7107 hdr_next += stripped_before;
7108 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7109 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7110 }
7111
7112 /* First, let's see if we want to capture this cookie. We check
7113 * that we don't already have a server side cookie, because we
7114 * can only capture one. Also as an optimisation, we ignore
7115 * cookies shorter than the declared name.
7116 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7117 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7118 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7119 (val_end - att_beg >= t->fe->capture_namelen) &&
7120 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7121 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7122 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7123 Alert("HTTP logging : out of memory.\n");
7124 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7125 else {
7126 if (log_len > t->fe->capture_len)
7127 log_len = t->fe->capture_len;
7128 memcpy(txn->srv_cookie, att_beg, log_len);
7129 txn->srv_cookie[log_len] = 0;
7130 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7131 }
7132
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7133 srv = target_srv(&t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7134 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7135 if (!(t->flags & SN_IGNORE_PRST) &&
7136 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7137 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7138 /* assume passive cookie by default */
7139 txn->flags &= ~TX_SCK_MASK;
7140 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7141
7142 /* If the cookie is in insert mode on a known server, we'll delete
7143 * this occurrence because we'll insert another one later.
7144 * 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]7145 * a direct access.
7146 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7147 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7148 /* The "preserve" flag was set, we don't want to touch the
7149 * server's cookie.
7150 */
7151 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7152 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7153 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7154 /* this cookie must be deleted */
7155 if (*prev == ':' && next == hdr_end) {
7156 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7157 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7158 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7159 txn->hdr_idx.used--;
7160 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7161 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7162 hdr_next += delta;
7163 http_msg_move_end(&txn->rsp, delta);
7164 /* note: while both invalid now, <next> and <hdr_end>
7165 * are still equal, so the for() will stop as expected.
7166 */
7167 } else {
7168 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7169 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7170 next = prev;
7171 hdr_end += delta;
7172 hdr_next += delta;
7173 cur_hdr->len += delta;
7174 http_msg_move_end(&txn->rsp, delta);
7175 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7176 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7177 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7178 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7179 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7180 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7181 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7182 * with this server since we know it.
7183 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7184 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7185 next += delta;
7186 hdr_end += delta;
7187 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7188 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7189 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7190
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7191 txn->flags &= ~TX_SCK_MASK;
7192 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7193 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7194 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7195 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7196 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7197 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7198 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7199 next += delta;
7200 hdr_end += delta;
7201 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7202 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7203 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7204
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7205 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7206 txn->flags &= ~TX_SCK_MASK;
7207 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7208 }
7209 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7210 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7211 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7212 int cmp_len, value_len;
7213 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7214
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7215 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7216 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7217 value_begin = att_beg + t->be->appsession_name_len;
7218 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]7219 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7220 cmp_len = att_end - att_beg;
7221 value_begin = val_beg;
7222 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7223 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7224
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7225 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7226 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7227 /* free a possibly previously allocated memory */
7228 pool_free2(apools.sessid, txn->sessid);
7229
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7230 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7231 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7232 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7233 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7234 return;
7235 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7236 memcpy(txn->sessid, value_begin, value_len);
7237 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7238 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7239 }
7240 /* that's done for this cookie, check the next one on the same
7241 * line when next != hdr_end (only if is_cookie2).
7242 */
7243 }
7244 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7245 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7246 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7247
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7248 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7249 appsess *asession = NULL;
7250 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7251 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7252 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7253 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7254 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7255 Alert("Not enough Memory process_srv():asession:calloc().\n");
7256 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7257 return;
7258 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7259 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7260
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7261 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7262 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7263 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]7264 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7265 return;
7266 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7267 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7268 asession->sessid[t->be->appsession_len] = 0;
7269
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7270 server_id_len = strlen(target_srv(&t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7271 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7272 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7273 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]7274 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7275 return;
7276 }
7277 asession->serverid[0] = '\0';
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7278 memcpy(asession->serverid, target_srv(&t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7279
7280 asession->request_count = 0;
7281 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7282 }
7283
7284 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7285 asession->request_count++;
7286 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7287}
7288
7289
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7290/*
7291 * Check if response is cacheable or not. Updates t->flags.
7292 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7293void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7294{
7295 struct http_txn *txn = &t->txn;
7296 char *p1, *p2;
7297
7298 char *cur_ptr, *cur_end, *cur_next;
7299 int cur_idx;
7300
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7301 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7302 return;
7303
7304 /* Iterate through the headers.
7305 * we start with the start line.
7306 */
7307 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7308 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7309
7310 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7311 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7312 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7313
7314 cur_hdr = &txn->hdr_idx.v[cur_idx];
7315 cur_ptr = cur_next;
7316 cur_end = cur_ptr + cur_hdr->len;
7317 cur_next = cur_end + cur_hdr->cr + 1;
7318
7319 /* We have one full header between cur_ptr and cur_end, and the
7320 * next header starts at cur_next. We're only interested in
7321 * "Cookie:" headers.
7322 */
7323
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7324 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7325 if (val) {
7326 if ((cur_end - (cur_ptr + val) >= 8) &&
7327 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7328 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7329 return;
7330 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7331 }
7332
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7333 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7334 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7335 continue;
7336
7337 /* OK, right now we know we have a cache-control header at cur_ptr */
7338
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7339 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7340
7341 if (p1 >= cur_end) /* no more info */
7342 continue;
7343
7344 /* p1 is at the beginning of the value */
7345 p2 = p1;
7346
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7347 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7348 p2++;
7349
7350 /* we have a complete value between p1 and p2 */
7351 if (p2 < cur_end && *p2 == '=') {
7352 /* we have something of the form no-cache="set-cookie" */
7353 if ((cur_end - p1 >= 21) &&
7354 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7355 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7356 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7357 continue;
7358 }
7359
7360 /* OK, so we know that either p2 points to the end of string or to a comma */
7361 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
7362 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7363 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7364 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7365 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7366 return;
7367 }
7368
7369 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7370 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7371 continue;
7372 }
7373 }
7374}
7375
7376
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7377/*
7378 * Try to retrieve a known appsession in the URI, then the associated server.
7379 * If the server is found, it's assigned to the session.
7380 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7381void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7382{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7383 char *end_params, *first_param, *cur_param, *next_param;
7384 char separator;
7385 int value_len;
7386
7387 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7388
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7389 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7390 (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]7391 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7392 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7393
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7394 first_param = NULL;
7395 switch (mode) {
7396 case PR_O2_AS_M_PP:
7397 first_param = memchr(begin, ';', len);
7398 break;
7399 case PR_O2_AS_M_QS:
7400 first_param = memchr(begin, '?', len);
7401 break;
7402 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7403
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7404 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7405 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7406 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7407
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7408 switch (mode) {
7409 case PR_O2_AS_M_PP:
7410 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7411 end_params = (char *) begin + len;
7412 }
7413 separator = ';';
7414 break;
7415 case PR_O2_AS_M_QS:
7416 end_params = (char *) begin + len;
7417 separator = '&';
7418 break;
7419 default:
7420 /* unknown mode, shouldn't happen */
7421 return;
7422 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7423
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7424 cur_param = next_param = end_params;
7425 while (cur_param > first_param) {
7426 cur_param--;
7427 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7428 /* let's see if this is the appsession parameter */
7429 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7430 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7431 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7432 /* Cool... it's the right one */
7433 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7434 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7435 if (value_len > 0) {
7436 manage_client_side_appsession(t, cur_param, value_len);
7437 }
7438 break;
7439 }
7440 next_param = cur_param;
7441 }
7442 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7443#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7444 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7445 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7446#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7447}
7448
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7449/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7450 * 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]7451 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7452 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7453 * 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]7454 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7455 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7456 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7457 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7458int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7459{
7460 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7461 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7462 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7463 const char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7464
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7465 if (!uri_auth)
7466 return 0;
7467
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7468 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]7469 return 0;
7470
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7471 memset(&si->applet.ctx.stats, 0, sizeof(si->applet.ctx.stats));
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7472 si->applet.ctx.stats.st_code = STAT_STATUS_INIT;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7473
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7474 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7475 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7476 return 0;
7477
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7478 h = uri;
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]7479 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7480 return 0;
7481
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7482 h += uri_auth->uri_len;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7483 while (h <= uri + msg->sl.rq.u_l - 3) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7484 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7485 si->applet.ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7486 break;
7487 }
7488 h++;
7489 }
7490
7491 if (uri_auth->refresh) {
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7492 h = uri + uri_auth->uri_len;
7493 while (h <= uri + msg->sl.rq.u_l - 10) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7494 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7495 si->applet.ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7496 break;
7497 }
7498 h++;
7499 }
7500 }
7501
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7502 h = uri + uri_auth->uri_len;
7503 while (h <= uri + msg->sl.rq.u_l - 4) {
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7504 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7505 si->applet.ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7506 break;
7507 }
7508 h++;
7509 }
7510
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7511 h = uri + uri_auth->uri_len;
7512 while (h <= uri + msg->sl.rq.u_l - 8) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7513 if (memcmp(h, ";st=", 4) == 0) {
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7514 int i;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7515 h += 4;
Cyril Bonté20a804a2012-05-10 19:42:52 +0200[diff] [blame]7516 si->applet.ctx.stats.st_code = STAT_STATUS_UNKN;
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7517 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
7518 if (strncmp(stat_status_codes[i], h, 4) == 0) {
7519 si->applet.ctx.stats.st_code = i;
7520 break;
7521 }
7522 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7523 break;
7524 }
7525 h++;
7526 }
7527
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7528 si->applet.ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7529
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7530 return 1;
7531}
7532
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7533/*
7534 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7535 * By default it tries to report the error position as msg->err_pos. However if
7536 * this one is not set, it will then report msg->next, which is the last known
7537 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7538 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7539 */
7540void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7541 struct http_msg *msg,
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7542 int state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7543{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7544 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7545 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7546
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7547 es->len = MIN(chn->buf->i, sizeof(es->buf));
7548 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7549 len1 = MIN(len1, es->len);
7550 len2 = es->len - len1; /* remaining data if buffer wraps */
7551
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7552 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7553 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7554 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7555
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7556 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7557 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7558 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7559 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7560
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7561 es->when = date; // user-visible date
7562 es->sid = s->uniq_id;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7563 es->srv = target_srv(&s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7564 es->oe = other_end;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]7565 es->src = s->req->prod->conn->addr.from;
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7566 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7567 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7568 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7569 es->s_flags = s->flags;
7570 es->t_flags = s->txn.flags;
7571 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7572 es->b_out = chn->buf->o;
7573 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7574 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7575 es->m_clen = msg->chunk_len;
7576 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7577}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7578
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7579/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7580 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7581 * performed over the whole headers. Otherwise it must contain a valid header
7582 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7583 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7584 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7585 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
7586 * -1.
7587 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7588 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7589unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7590 struct hdr_idx *idx, int occ,
7591 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7592{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7593 struct hdr_ctx local_ctx;
7594 char *ptr_hist[MAX_HDR_HISTORY];
7595 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7596 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7597 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7598
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7599 if (!ctx) {
7600 local_ctx.idx = 0;
7601 ctx = &local_ctx;
7602 }
7603
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7604 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7605 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7606 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7607 occ--;
7608 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7609 *vptr = ctx->line + ctx->val;
7610 *vlen = ctx->vlen;
7611 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7612 }
7613 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7614 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7615 }
7616
7617 /* negative occurrence, we scan all the list then walk back */
7618 if (-occ > MAX_HDR_HISTORY)
7619 return 0;
7620
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7621 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7622 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7623 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7624 len_hist[hist_ptr] = ctx->vlen;
7625 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7626 hist_ptr = 0;
7627 found++;
7628 }
7629 if (-occ > found)
7630 return 0;
7631 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
7632 * find occurrence -occ, so we have to check [hist_ptr+occ].
7633 */
7634 hist_ptr += occ;
7635 if (hist_ptr >= MAX_HDR_HISTORY)
7636 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7637 *vptr = ptr_hist[hist_ptr];
7638 *vlen = len_hist[hist_ptr];
7639 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7640}
7641
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]7642/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7643 * Print a debug line with a header. Always stop at the first CR or LF char,
7644 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
7645 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7646 */
7647void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
7648{
7649 int len, max;
7650 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreaufb7508a2012-05-21 16:47:54 +0200[diff] [blame]7651 dir, (unsigned short)si_fd(t->req->prod), (unsigned short)si_fd(t->req->cons));
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7652
7653 for (max = 0; start + max < end; max++)
7654 if (start[max] == '\r' || start[max] == '\n')
7655 break;
7656
Willy Tarreauc919dc62012-10-26 17:35:22 +0200[diff] [blame]7657 UBOUND(max, global.tune.bufsize - len - 3);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7658 len += strlcpy2(trash + len, start, max + 1);
7659 trash[len++] = '\n';
Willy Tarreau21337822012-04-29 14:11:38 +0200[diff] [blame]7660 if (write(1, trash, len) < 0) /* shut gcc warning */;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7661}
7662
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7663/*
7664 * Initialize a new HTTP transaction for session <s>. It is assumed that all
7665 * the required fields are properly allocated and that we only need to (re)init
7666 * them. This should be used before processing any new request.
7667 */
7668void http_init_txn(struct session *s)
7669{
7670 struct http_txn *txn = &s->txn;
7671 struct proxy *fe = s->fe;
7672
7673 txn->flags = 0;
7674 txn->status = -1;
7675
William Lallemand5f232402012-04-05 18:02:55 +0200[diff] [blame]7676 global.req_count++;
7677
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7678 txn->cookie_first_date = 0;
7679 txn->cookie_last_date = 0;
7680
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7681 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7682 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7683 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7684 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7685 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7686 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]7687 txn->req.chunk_len = 0LL;
7688 txn->req.body_len = 0LL;
7689 txn->rsp.chunk_len = 0LL;
7690 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7691 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
7692 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]7693 txn->req.chn = s->req;
7694 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7695
7696 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7697
7698 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
7699 if (fe->options2 & PR_O2_REQBUG_OK)
7700 txn->req.err_pos = -1; /* let buggy requests pass */
7701
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7702 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7703 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
7704
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7705 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7706 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
7707
7708 if (txn->hdr_idx.v)
7709 hdr_idx_init(&txn->hdr_idx);
7710}
7711
7712/* to be used at the end of a transaction */
7713void http_end_txn(struct session *s)
7714{
7715 struct http_txn *txn = &s->txn;
7716
7717 /* these ones will have been dynamically allocated */
7718 pool_free2(pool2_requri, txn->uri);
7719 pool_free2(pool2_capture, txn->cli_cookie);
7720 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7721 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7722 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7723
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7724 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7725 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7726 txn->uri = NULL;
7727 txn->srv_cookie = NULL;
7728 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7729
7730 if (txn->req.cap) {
7731 struct cap_hdr *h;
7732 for (h = s->fe->req_cap; h; h = h->next)
7733 pool_free2(h->pool, txn->req.cap[h->index]);
7734 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
7735 }
7736
7737 if (txn->rsp.cap) {
7738 struct cap_hdr *h;
7739 for (h = s->fe->rsp_cap; h; h = h->next)
7740 pool_free2(h->pool, txn->rsp.cap[h->index]);
7741 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
7742 }
7743
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7744}
7745
7746/* to be used at the end of a transaction to prepare a new one */
7747void http_reset_txn(struct session *s)
7748{
7749 http_end_txn(s);
7750 http_init_txn(s);
7751
7752 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7753 s->logs.logwait = s->fe->to_log;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]7754 session_del_srv_conn(s);
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]7755 clear_target(&s->target);
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]7756 /* re-init store persistence */
7757 s->store_count = 0;
7758
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7759 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7760
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7761 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7762
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7763 /* We must trim any excess data from the response buffer, because we
7764 * may have blocked an invalid response from a server that we don't
7765 * want to accidentely forward once we disable the analysers, nor do
7766 * we want those data to come along with next response. A typical
7767 * example of such data would be from a buggy server responding to
7768 * a HEAD with some data, or sending more than the advertised
7769 * content-length.
7770 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7771 if (unlikely(s->rep->buf->i))
7772 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7773
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7774 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7775 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7776
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7777 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7778 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7779
7780 s->req->rex = TICK_ETERNITY;
7781 s->req->wex = TICK_ETERNITY;
7782 s->req->analyse_exp = TICK_ETERNITY;
7783 s->rep->rex = TICK_ETERNITY;
7784 s->rep->wex = TICK_ETERNITY;
7785 s->rep->analyse_exp = TICK_ETERNITY;
7786}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7787
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7788void free_http_req_rules(struct list *r) {
7789 struct http_req_rule *tr, *pr;
7790
7791 list_for_each_entry_safe(pr, tr, r, list) {
7792 LIST_DEL(&pr->list);
7793 if (pr->action == HTTP_REQ_ACT_HTTP_AUTH)
7794 free(pr->http_auth.realm);
7795
7796 free(pr);
7797 }
7798}
7799
7800struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
7801{
7802 struct http_req_rule *rule;
7803 int cur_arg;
7804
7805 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
7806 if (!rule) {
7807 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
7808 return NULL;
7809 }
7810
7811 if (!*args[0]) {
7812 goto req_error_parsing;
7813 } else if (!strcmp(args[0], "allow")) {
7814 rule->action = HTTP_REQ_ACT_ALLOW;
7815 cur_arg = 1;
7816 } else if (!strcmp(args[0], "deny")) {
7817 rule->action = HTTP_REQ_ACT_DENY;
7818 cur_arg = 1;
7819 } else if (!strcmp(args[0], "auth")) {
7820 rule->action = HTTP_REQ_ACT_HTTP_AUTH;
7821 cur_arg = 1;
7822
7823 while(*args[cur_arg]) {
7824 if (!strcmp(args[cur_arg], "realm")) {
7825 rule->http_auth.realm = strdup(args[cur_arg + 1]);
7826 cur_arg+=2;
7827 continue;
7828 } else
7829 break;
7830 }
7831 } else {
7832req_error_parsing:
7833 Alert("parsing [%s:%d]: %s '%s', expects 'allow', 'deny', 'auth'.\n",
7834 file, linenum, *args[1]?"unknown parameter":"missing keyword in", args[*args[1]?1:0]);
7835 return NULL;
7836 }
7837
7838 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
7839 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7840 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7841
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7842 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
7843 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
7844 file, linenum, args[0], errmsg);
7845 free(errmsg);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7846 return NULL;
7847 }
7848 rule->cond = cond;
7849 }
7850 else if (*args[cur_arg]) {
7851 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
7852 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
7853 file, linenum, args[0], args[cur_arg]);
7854 return NULL;
7855 }
7856
7857 return rule;
7858}
7859
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7860/************************************************************************/
7861/* The code below is dedicated to ACL parsing and matching */
7862/************************************************************************/
7863
7864
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7865/* This function ensures that the prerequisites for an L7 fetch are ready,
7866 * which means that a request or response is ready. If some data is missing,
7867 * 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]7868 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
7869 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7870 *
7871 * The function returns :
7872 * 0 if some data is missing or if the requested data cannot be fetched
7873 * -1 if it is certain that we'll never have any HTTP message there
7874 * 1 if an HTTP message is ready
7875 */
7876static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7877acl_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7878 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7879{
7880 struct http_txn *txn = l7;
7881 struct http_msg *msg = &txn->req;
7882
7883 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
7884 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
7885 */
7886
7887 if (unlikely(!s || !txn))
7888 return 0;
7889
7890 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7891 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7892
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7893 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7894 if (unlikely(!s->req))
7895 return 0;
7896
7897 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]7898 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7899 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7900 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7901 return -1;
7902 }
7903
7904 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7905 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7906 http_msg_analyzer(msg, &txn->hdr_idx);
7907
7908 /* Still no valid request ? */
7909 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]7910 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7911 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7912 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7913 return -1;
7914 }
7915 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7916 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7917 return 0;
7918 }
7919
7920 /* OK we just got a valid HTTP request. We have some minor
7921 * preparation to perform so that further checks can rely
7922 * on HTTP tests.
7923 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7924 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7925 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
7926 s->flags |= SN_REDIRECTABLE;
7927
7928 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7929 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7930 return -1;
7931 }
7932 }
7933
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7934 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7935 return 0; /* data might have moved and indexes changed */
7936
7937 /* otherwise everything's ready for the request */
7938 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7939 else {
7940 /* Check for a dependency on a response */
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7941 if (txn->rsp.msg_state < HTTP_MSG_BODY)
7942 return 0;
7943 }
7944
7945 /* everything's OK */
7946 return 1;
7947}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7948
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7949#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7950 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]7951
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7952#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7953 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]7954
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7955
7956/* 1. Check on METHOD
7957 * We use the pre-parsed method if it is known, and store its number as an
7958 * integer. If it is unknown, we use the pointer and the length.
7959 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7960static 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]7961{
7962 int len, meth;
7963
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7964 len = strlen(*text);
7965 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7966
7967 pattern->val.i = meth;
7968 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7969 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7970 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]7971 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7972 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7973 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7974 pattern->len = len;
7975 }
7976 return 1;
7977}
7978
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7979/* This function fetches the method of current HTTP request and stores
7980 * it in the global pattern struct as a chunk. There are two possibilities :
7981 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
7982 * in <len> and <ptr> is NULL ;
7983 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
7984 * <len> to its length.
7985 * This is intended to be used with acl_match_meth() only.
7986 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7987static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7988acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7989 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7990{
7991 int meth;
7992 struct http_txn *txn = l7;
7993
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7994 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7995
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7996 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7997 smp->type = SMP_T_UINT;
7998 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7999 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8000 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
8001 /* ensure the indexes are not affected */
8002 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8003 smp->type = SMP_T_CSTR;
8004 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8005 smp->data.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8006 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8007 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8008 return 1;
8009}
8010
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8011/* See above how the method is stored in the global pattern */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8012static int acl_match_meth(struct sample *smp, struct acl_pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8013{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8014 int icase;
8015
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8016
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8017 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8018 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8019 if (smp->data.uint == pattern->val.i)
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8020 return ACL_PAT_PASS;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8021 return ACL_PAT_FAIL;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8022 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8023
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8024 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
8025 if (pattern->val.i != HTTP_METH_OTHER)
8026 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8027
8028 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8029 if (pattern->len != smp->data.str.len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8030 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8031
8032 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8033 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
8034 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8035 return ACL_PAT_FAIL;
8036 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8037}
8038
8039/* 2. Check on Request/Status Version
8040 * We simply compare strings here.
8041 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8042static 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]8043{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8044 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8045 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8046 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8047 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8048 }
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8049 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8050 return 1;
8051}
8052
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8053static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8054acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8055 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8056{
8057 struct http_txn *txn = l7;
8058 char *ptr;
8059 int len;
8060
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8061 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8062
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8063 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8064 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8065
8066 while ((len-- > 0) && (*ptr++ != '/'));
8067 if (len <= 0)
8068 return 0;
8069
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8070 smp->type = SMP_T_CSTR;
8071 smp->data.str.str = ptr;
8072 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8073
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8074 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8075 return 1;
8076}
8077
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8078static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8079acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8080 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8081{
8082 struct http_txn *txn = l7;
8083 char *ptr;
8084 int len;
8085
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8086 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8087
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8088 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8089 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8090
8091 while ((len-- > 0) && (*ptr++ != '/'));
8092 if (len <= 0)
8093 return 0;
8094
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8095 smp->type = SMP_T_CSTR;
8096 smp->data.str.str = ptr;
8097 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8098
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8099 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8100 return 1;
8101}
8102
8103/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8104static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8105acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8106 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8107{
8108 struct http_txn *txn = l7;
8109 char *ptr;
8110 int len;
8111
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8112 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8113
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8114 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8115 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8116
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8117 smp->type = SMP_T_UINT;
8118 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8119 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8120 return 1;
8121}
8122
8123/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8124static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8125smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8126 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8127{
8128 struct http_txn *txn = l7;
8129
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8130 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8131
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8132 smp->type = SMP_T_CSTR;
8133 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8134 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8135 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8136 return 1;
8137}
8138
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8139static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8140smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8141 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8142{
8143 struct http_txn *txn = l7;
8144
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8145 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8146
8147 /* Parse HTTP request */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8148 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->conn->addr.to);
8149 if (((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]8150 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8151 smp->type = SMP_T_IPV4;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8152 smp->data.ipv4 = ((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8153
8154 /*
8155 * If we are parsing url in frontend space, we prepare backend stage
8156 * to not parse again the same url ! optimization lazyness...
8157 */
8158 if (px->options & PR_O_HTTP_PROXY)
8159 l4->flags |= SN_ADDR_SET;
8160
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8161 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8162 return 1;
8163}
8164
8165static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8166smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8167 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8168{
8169 struct http_txn *txn = l7;
8170
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8171 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8172
8173 /* Same optimization as url_ip */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8174 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]8175 smp->type = SMP_T_UINT;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8176 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]8177
8178 if (px->options & PR_O_HTTP_PROXY)
8179 l4->flags |= SN_ADDR_SET;
8180
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8181 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8182 return 1;
8183}
8184
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8185/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
8186 * Accepts an optional argument of type string containing the header field name,
8187 * and an optional argument of type signed or unsigned integer to request an
8188 * explicit occurrence of the header. Note that in the event of a missing name,
8189 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8190 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8191static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8192smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8193 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8194{
8195 struct http_txn *txn = l7;
8196 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8197 struct hdr_ctx *ctx = (struct hdr_ctx *)smp->ctx.a;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8198 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]8199 int occ = 0;
8200 const char *name_str = NULL;
8201 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8202
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8203 if (args) {
8204 if (args[0].type != ARGT_STR)
8205 return 0;
8206 name_str = args[0].data.str.str;
8207 name_len = args[0].data.str.len;
8208
8209 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
8210 occ = args[1].data.uint;
8211 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8212
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8213 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8214
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8215 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8216 /* search for header from the beginning */
8217 ctx->idx = 0;
8218
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8219 if (!occ && !(opt & SMP_OPT_ITERATE))
8220 /* no explicit occurrence and single fetch => last header by default */
8221 occ = -1;
8222
8223 if (!occ)
8224 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8225 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]8226
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8227 smp->type = SMP_T_CSTR;
8228 smp->flags |= SMP_F_VOL_HDR;
8229 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]8230 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8231
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8232 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8233 return 0;
8234}
8235
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8236/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8237 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8238 */
8239static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8240smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8241 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8242{
8243 struct http_txn *txn = l7;
8244 struct hdr_idx *idx = &txn->hdr_idx;
8245 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8246 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]8247 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8248
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8249 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8250 return 0;
8251
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8252 CHECK_HTTP_MESSAGE_FIRST();
8253
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8254 ctx.idx = 0;
8255 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8256 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]8257 cnt++;
8258
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8259 smp->type = SMP_T_UINT;
8260 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8261 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8262 return 1;
8263}
8264
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8265/* Fetch an HTTP header's integer value. The integer value is returned. It
8266 * takes a mandatory argument of type string and an optional one of type int
8267 * to designate a specific occurrence. It returns an unsigned integer, which
8268 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8269 */
8270static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8271smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8272 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8273{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8274 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8275
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8276 if (ret > 0) {
8277 smp->type = SMP_T_UINT;
8278 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8279 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8280
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8281 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8282}
8283
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8284/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
8285 * and an optional one of type int to designate a specific occurrence.
8286 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8287 */
8288static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8289smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8290 const struct arg *args, struct sample *smp)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8291{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8292 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8293
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8294 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8295 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
8296 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8297 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8298 } else {
8299 struct chunk *temp = sample_get_trash_chunk();
8300 if (smp->data.str.len < temp->size - 1) {
8301 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
8302 temp->str[smp->data.str.len] = '\0';
8303 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
8304 smp->type = SMP_T_IPV6;
8305 break;
8306 }
8307 }
8308 }
8309
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8310 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8311 if (!(smp->flags & SMP_F_NOT_LAST))
8312 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8313 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8314 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8315}
8316
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8317/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
8318 * the first '/' after the possible hostname, and ends before the possible '?'.
8319 */
8320static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8321smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8322 const struct arg *args, struct sample *smp)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8323{
8324 struct http_txn *txn = l7;
8325 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8326
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8327 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8328
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8329 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]8330 ptr = http_get_path(txn);
8331 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8332 return 0;
8333
8334 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8335 smp->type = SMP_T_CSTR;
8336 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8337
8338 while (ptr < end && *ptr != '?')
8339 ptr++;
8340
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8341 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8342 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8343 return 1;
8344}
8345
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8346/* This produces a concatenation of the first occurrence of the Host header
8347 * followed by the path component if it begins with a slash ('/'). This means
8348 * that '*' will not be added, resulting in exactly the first Host entry.
8349 * If no Host header is found, then the path is returned as-is. The returned
8350 * value is stored in the trash so it does not need to be marked constant.
8351 */
8352static int
8353smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8354 const struct arg *args, struct sample *smp)
8355{
8356 struct http_txn *txn = l7;
8357 char *ptr, *end, *beg;
8358 struct hdr_ctx ctx;
8359
8360 CHECK_HTTP_MESSAGE_FIRST();
8361
8362 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8363 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]8364 !ctx.vlen)
8365 return smp_fetch_path(px, l4, l7, opt, args, smp);
8366
8367 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
8368 memcpy(trash, ctx.line + ctx.val, ctx.vlen);
8369 smp->type = SMP_T_STR;
8370 smp->data.str.str = trash;
8371 smp->data.str.len = ctx.vlen;
8372
8373 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8374 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]8375 beg = http_get_path(txn);
8376 if (!beg)
8377 beg = end;
8378
8379 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
8380
8381 if (beg < ptr && *beg == '/') {
8382 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
8383 smp->data.str.len += ptr - beg;
8384 }
8385
8386 smp->flags = SMP_F_VOL_1ST;
8387 return 1;
8388}
8389
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8390static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8391acl_fetch_proto_http(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 Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8393{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8394 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8395 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8396 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8397
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8398 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8399
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8400 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8401 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8402 return 1;
8403}
8404
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8405/* return a valid test if the current request is the first one on the connection */
8406static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8407acl_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]8408 const struct arg *args, struct sample *smp)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8409{
8410 if (!s)
8411 return 0;
8412
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8413 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8414 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8415 return 1;
8416}
8417
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8418/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8419static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8420acl_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8421 const struct arg *args, struct sample *smp)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8422{
8423
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8424 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8425 return 0;
8426
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8427 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8428
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8429 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8430 return 0;
8431
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8432 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8433 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]8434 return 1;
8435}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8436
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]8437/* Accepts exactly 1 argument of type userlist */
8438static int
8439acl_fetch_http_auth_grp(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8440 const struct arg *args, struct sample *smp)
8441{
8442
8443 if (!args || args->type != ARGT_USR)
8444 return 0;
8445
8446 CHECK_HTTP_MESSAGE_FIRST();
8447
8448 if (!get_http_auth(l4))
8449 return 0;
8450
8451 /* acl_match_auth() will need several information at once */
8452 smp->ctx.a[0] = args->data.usr; /* user list */
8453 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
8454 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
8455
8456 /* if the user does not belong to the userlist or has a wrong password,
8457 * report that it unconditionally does not match. Otherwise we return
8458 * a non-zero integer which will be ignored anyway since all the params
8459 * that acl_match_auth() will use are in test->ctx.a[0,1,2].
8460 */
8461 smp->type = SMP_T_BOOL;
8462 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
8463 if (smp->data.uint)
8464 smp->type = SMP_T_UINT;
8465
8466 return 1;
8467}
8468
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8469/* Try to find the next occurrence of a cookie name in a cookie header value.
8470 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
8471 * the cookie value is returned into *value and *value_l, and the function
8472 * returns a pointer to the next pointer to search from if the value was found.
8473 * Otherwise if the cookie was not found, NULL is returned and neither value
8474 * nor value_l are touched. The input <hdr> string should first point to the
8475 * header's value, and the <hdr_end> pointer must point to the first character
8476 * not part of the value. <list> must be non-zero if value may represent a list
8477 * of values (cookie headers). This makes it faster to abort parsing when no
8478 * list is expected.
8479 */
8480static char *
8481extract_cookie_value(char *hdr, const char *hdr_end,
8482 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]8483 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8484{
8485 char *equal, *att_end, *att_beg, *val_beg, *val_end;
8486 char *next;
8487
8488 /* we search at least a cookie name followed by an equal, and more
8489 * generally something like this :
8490 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
8491 */
8492 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
8493 /* Iterate through all cookies on this line */
8494
8495 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8496 att_beg++;
8497
8498 /* find att_end : this is the first character after the last non
8499 * space before the equal. It may be equal to hdr_end.
8500 */
8501 equal = att_end = att_beg;
8502
8503 while (equal < hdr_end) {
8504 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
8505 break;
8506 if (http_is_spht[(unsigned char)*equal++])
8507 continue;
8508 att_end = equal;
8509 }
8510
8511 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8512 * is between <att_beg> and <equal>, both may be identical.
8513 */
8514
8515 /* look for end of cookie if there is an equal sign */
8516 if (equal < hdr_end && *equal == '=') {
8517 /* look for the beginning of the value */
8518 val_beg = equal + 1;
8519 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8520 val_beg++;
8521
8522 /* find the end of the value, respecting quotes */
8523 next = find_cookie_value_end(val_beg, hdr_end);
8524
8525 /* make val_end point to the first white space or delimitor after the value */
8526 val_end = next;
8527 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8528 val_end--;
8529 } else {
8530 val_beg = val_end = next = equal;
8531 }
8532
8533 /* We have nothing to do with attributes beginning with '$'. However,
8534 * they will automatically be removed if a header before them is removed,
8535 * since they're supposed to be linked together.
8536 */
8537 if (*att_beg == '$')
8538 continue;
8539
8540 /* Ignore cookies with no equal sign */
8541 if (equal == next)
8542 continue;
8543
8544 /* Now we have the cookie name between att_beg and att_end, and
8545 * its value between val_beg and val_end.
8546 */
8547
8548 if (att_end - att_beg == cookie_name_l &&
8549 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
8550 /* let's return this value and indicate where to go on from */
8551 *value = val_beg;
8552 *value_l = val_end - val_beg;
8553 return next + 1;
8554 }
8555
8556 /* Set-Cookie headers only have the name in the first attr=value part */
8557 if (!list)
8558 break;
8559 }
8560
8561 return NULL;
8562}
8563
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8564/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8565 * smp->ctx.a[0] for the in-header position, smp->ctx.a[1] for the
8566 * 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]8567 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8568 * 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]8569 * Accepts exactly 1 argument of type string. If the input options indicate
8570 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8571 */
8572static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8573smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8574 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8575{
8576 struct http_txn *txn = l7;
8577 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8578 struct hdr_ctx *ctx = (struct hdr_ctx *)&smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8579 const struct http_msg *msg;
8580 const char *hdr_name;
8581 int hdr_name_len;
8582 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8583 int occ = 0;
8584 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8585
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8586 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8587 return 0;
8588
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8589 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8590
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8591 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8592 msg = &txn->req;
8593 hdr_name = "Cookie";
8594 hdr_name_len = 6;
8595 } else {
8596 msg = &txn->rsp;
8597 hdr_name = "Set-Cookie";
8598 hdr_name_len = 10;
8599 }
8600
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8601 if (!occ && !(opt & SMP_OPT_ITERATE))
8602 /* no explicit occurrence and single fetch => last cookie by default */
8603 occ = -1;
8604
8605 /* OK so basically here, either we want only one value and it's the
8606 * last one, or we want to iterate over all of them and we fetch the
8607 * next one.
8608 */
8609
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8610 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8611 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8612 /* search for the header from the beginning, we must first initialize
8613 * the search parameters.
8614 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8615 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8616 ctx->idx = 0;
8617 }
8618
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8619 smp->flags |= SMP_F_VOL_HDR;
8620
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8621 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8622 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
8623 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8624 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
8625 goto out;
8626
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8627 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8628 continue;
8629
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8630 smp->ctx.a[0] = ctx->line + ctx->val;
8631 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8632 }
8633
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8634 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8635 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]8636 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8637 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8638 &smp->data.str.str,
8639 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8640 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8641 found = 1;
8642 if (occ >= 0) {
8643 /* one value was returned into smp->data.str.{str,len} */
8644 smp->flags |= SMP_F_NOT_LAST;
8645 return 1;
8646 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8647 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8648 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8649 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8650 /* all cookie headers and values were scanned. If we're looking for the
8651 * last occurrence, we may return it now.
8652 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8653 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8654 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8655 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8656}
8657
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8658/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8659 * 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]8660 * multiple cookies may be parsed on the same line.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8661 * Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8662 */
8663static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8664acl_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8665 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8666{
8667 struct http_txn *txn = l7;
8668 struct hdr_idx *idx = &txn->hdr_idx;
8669 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8670 const struct http_msg *msg;
8671 const char *hdr_name;
8672 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8673 int cnt;
8674 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8675 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8676
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8677 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8678 return 0;
8679
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8680 CHECK_HTTP_MESSAGE_FIRST();
8681
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8682 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8683 msg = &txn->req;
8684 hdr_name = "Cookie";
8685 hdr_name_len = 6;
8686 } else {
8687 msg = &txn->rsp;
8688 hdr_name = "Set-Cookie";
8689 hdr_name_len = 10;
8690 }
8691
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8692 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]8693 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8694 ctx.idx = 0;
8695 cnt = 0;
8696
8697 while (1) {
8698 /* Note: val_beg == NULL every time we need to fetch a new header */
8699 if (!val_beg) {
8700 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
8701 break;
8702
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8703 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8704 continue;
8705
8706 val_beg = ctx.line + ctx.val;
8707 val_end = val_beg + ctx.vlen;
8708 }
8709
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8710 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8711 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8712 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8713 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8714 &smp->data.str.str,
8715 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8716 cnt++;
8717 }
8718 }
8719
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8720 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8721 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8722 return 1;
8723}
8724
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8725/* Fetch an cookie's integer value. The integer value is returned. It
8726 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
8727 */
8728static int
8729smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8730 const struct arg *args, struct sample *smp)
8731{
8732 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp);
8733
8734 if (ret > 0) {
8735 smp->type = SMP_T_UINT;
8736 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8737 }
8738
8739 return ret;
8740}
8741
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8742/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8743/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8744/************************************************************************/
8745
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8746/*
8747 * Given a path string and its length, find the position of beginning of the
8748 * query string. Returns NULL if no query string is found in the path.
8749 *
8750 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
8751 *
8752 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
8753 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8754static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8755{
8756 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]8757
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8758 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8759 return p ? p + 1 : NULL;
8760}
8761
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8762static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8763{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8764 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8765}
8766
8767/*
8768 * Given a url parameter, find the starting position of the first occurence,
8769 * or NULL if the parameter is not found.
8770 *
8771 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
8772 * the function will return query_string+8.
8773 */
8774static char*
8775find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8776 char* url_param_name, size_t url_param_name_l,
8777 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8778{
8779 char *pos, *last;
8780
8781 pos = query_string;
8782 last = query_string + query_string_l - url_param_name_l - 1;
8783
8784 while (pos <= last) {
8785 if (pos[url_param_name_l] == '=') {
8786 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
8787 return pos;
8788 pos += url_param_name_l + 1;
8789 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8790 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8791 pos++;
8792 pos++;
8793 }
8794 return NULL;
8795}
8796
8797/*
8798 * Given a url parameter name, returns its value and size into *value and
8799 * *value_l respectively, and returns non-zero. If the parameter is not found,
8800 * zero is returned and value/value_l are not touched.
8801 */
8802static int
8803find_url_param_value(char* path, size_t path_l,
8804 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8805 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8806{
8807 char *query_string, *qs_end;
8808 char *arg_start;
8809 char *value_start, *value_end;
8810
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8811 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8812 if (!query_string)
8813 return 0;
8814
8815 qs_end = path + path_l;
8816 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8817 url_param_name, url_param_name_l,
8818 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8819 if (!arg_start)
8820 return 0;
8821
8822 value_start = arg_start + url_param_name_l + 1;
8823 value_end = value_start;
8824
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8825 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8826 value_end++;
8827
8828 *value = value_start;
8829 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]8830 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8831}
8832
8833static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8834smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8835 const struct arg *args, struct sample *smp)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8836{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8837 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8838 struct http_txn *txn = l7;
8839 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8840
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8841 if (!args || args[0].type != ARGT_STR ||
8842 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8843 return 0;
8844
8845 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8846
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8847 if (args[1].type)
8848 delim = *args[1].data.str.str;
8849
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8850 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]8851 args->data.str.str, args->data.str.len,
8852 &smp->data.str.str, &smp->data.str.len,
8853 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8854 return 0;
8855
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]8856 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8857 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8858 return 1;
8859}
8860
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]8861/* Return the signed integer value for the specified url parameter (see url_param
8862 * above).
8863 */
8864static int
8865smp_fetch_url_param_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8866 const struct arg *args, struct sample *smp)
8867{
8868 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp);
8869
8870 if (ret > 0) {
8871 smp->type = SMP_T_UINT;
8872 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8873 }
8874
8875 return ret;
8876}
8877
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8878/* This function is used to validate the arguments passed to any "hdr" fetch
8879 * keyword. These keywords support an optional positive or negative occurrence
8880 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
8881 * is assumed that the types are already the correct ones. Returns 0 on error,
8882 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
8883 * error message in case of error, that the caller is responsible for freeing.
8884 * The initial location must either be freeable or NULL.
8885 */
8886static int val_hdr(struct arg *arg, char **err_msg)
8887{
8888 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8889 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8890 return 0;
8891 }
8892 return 1;
8893}
8894
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8895/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8896/* All supported ACL keywords must be declared here. */
8897/************************************************************************/
8898
8899/* Note: must not be declared <const> as its list will be overwritten.
8900 * Please take care of keeping this list alphabetically sorted.
8901 */
8902static struct acl_kw_list acl_kws = {{ },{
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8903 { "base", acl_parse_str, smp_fetch_base, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8904 { "base_beg", acl_parse_str, smp_fetch_base, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8905 { "base_dir", acl_parse_str, smp_fetch_base, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8906 { "base_dom", acl_parse_str, smp_fetch_base, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8907 { "base_end", acl_parse_str, smp_fetch_base, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8908 { "base_len", acl_parse_int, smp_fetch_base, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8909 { "base_reg", acl_parse_reg, smp_fetch_base, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8910 { "base_sub", acl_parse_str, smp_fetch_base, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
8911
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8912 { "cook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
8913 { "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]8914 { "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]8915 { "cook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8916 { "cook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8917 { "cook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8918 { "cook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8919 { "cook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8920 { "cook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8921 { "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]8922
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8923 { "hdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
8924 { "hdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8925 { "hdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8926 { "hdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8927 { "hdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8928 { "hdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8929 { "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 },
8930 { "hdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8931 { "hdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8932 { "hdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8933 { "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]8934
8935 { "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]8936 { "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]8937 { "http_first_req", acl_parse_nothing, acl_fetch_http_first_req, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
8938
8939 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT, 0 },
8940
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8941 { "path", acl_parse_str, smp_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8942 { "path_beg", acl_parse_str, smp_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8943 { "path_dir", acl_parse_str, smp_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8944 { "path_dom", acl_parse_str, smp_fetch_path, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8945 { "path_end", acl_parse_str, smp_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8946 { "path_len", acl_parse_int, smp_fetch_path, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8947 { "path_reg", acl_parse_reg, smp_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8948 { "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]8949
8950 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
8951 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8952 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, 0 },
8953
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8954 { "scook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
8955 { "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]8956 { "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]8957 { "scook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8958 { "scook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8959 { "scook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8960 { "scook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8961 { "scook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8962 { "scook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8963 { "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]8964
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8965 { "shdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
8966 { "shdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8967 { "shdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8968 { "shdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8969 { "shdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8970 { "shdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8971 { "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 },
8972 { "shdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8973 { "shdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8974 { "shdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8975 { "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]8976
8977 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT, 0 },
8978
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8979 { "url", acl_parse_str, smp_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8980 { "url_beg", acl_parse_str, smp_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8981 { "url_dir", acl_parse_str, smp_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8982 { "url_dom", acl_parse_str, smp_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8983 { "url_end", acl_parse_str, smp_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8984 { "url_ip", acl_parse_ip, smp_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8985 { "url_len", acl_parse_int, smp_fetch_url, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8986 { "url_port", acl_parse_int, smp_fetch_url_port, acl_match_int, ACL_USE_L7REQ_VOLATILE, 0 },
8987 { "url_reg", acl_parse_reg, smp_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8988 { "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]8989
8990 { "urlp", acl_parse_str, smp_fetch_url_param, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
8991 { "urlp_beg", acl_parse_str, smp_fetch_url_param, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8992 { "urlp_dir", acl_parse_str, smp_fetch_url_param, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8993 { "urlp_dom", acl_parse_str, smp_fetch_url_param, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8994 { "urlp_end", acl_parse_str, smp_fetch_url_param, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8995 { "urlp_ip", acl_parse_ip, smp_fetch_url_param, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
8996 { "urlp_len", acl_parse_int, smp_fetch_url_param, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8997 { "urlp_reg", acl_parse_reg, smp_fetch_url_param, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8998 { "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]8999 { "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]9000
9001 { NULL, NULL, NULL, NULL },
9002}};
9003
9004/************************************************************************/
9005/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9006/************************************************************************/
9007/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9008static struct sample_fetch_kw_list sample_fetch_keywords = {{ },{
Willy Tarreau1b6c00c2012-10-05 22:41:26 +0200[diff] [blame]9009 { "hdr", smp_fetch_hdr, ARG2(1,STR,SINT), val_hdr, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9010 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9011 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9012 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9013 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_CAP_L7|SMP_CAP_REQ },
9014 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_CAP_L7|SMP_CAP_REQ },
9015 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9016 { "cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ|SMP_CAP_RES },
9017 { "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]9018 { NULL, NULL, 0, 0, 0 },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9019}};
9020
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9021
9022__attribute__((constructor))
9023static void __http_protocol_init(void)
9024{
9025 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9026 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9027}
9028
9029
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]9030/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]9031 * Local variables:
9032 * c-indent-level: 8
9033 * c-basic-offset: 8
9034 * End:
9035 */