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git01.mediatek.com / haproxy / 4a6e5c6d69adbd0df9af1dae1a9bce8d42488da1 / . / src / proto_http.c
blob: aea1ec22f02e2c3dea63bd3b6a92445142d3c7b8 [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4 * Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <ctype.h>
14#include <errno.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <syslog.h>
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]20#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]21
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Willy Tarreaub05405a2012-01-23 15:35:52 +0100[diff] [blame]26#include <netinet/tcp.h>
27
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]28#include <common/appsession.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]29#include <common/base64.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]30#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]31#include <common/compat.h>
32#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]33#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]34#include <common/memory.h>
35#include <common/mini-clist.h>
36#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]37#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]38#include <common/time.h>
39#include <common/uri_auth.h>
40#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]41
42#include <types/capture.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]43#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]44
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]45#include <proto/acl.h>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]46#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]47#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]48#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]49#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]50#include <proto/checks.h>
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]51#include <proto/compression.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]52#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]53#include <proto/fd.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]54#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]55#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]56#include <proto/hdr_idx.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]57#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]58#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]59#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]60#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]61#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]62#include <proto/server.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]63#include <proto/session.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]64#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]65#include <proto/task.h>
66
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]67const char HTTP_100[] =
68 "HTTP/1.1 100 Continue\r\n\r\n";
69
70const struct chunk http_100_chunk = {
71 .str = (char *)&HTTP_100,
72 .len = sizeof(HTTP_100)-1
73};
74
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]75/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]76const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]77 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]78 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]79 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]80 "Location: "; /* not terminated since it will be concatenated with the URL */
81
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]82const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]83 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]84 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]85 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]86 "Location: "; /* not terminated since it will be concatenated with the URL */
87
88/* same as 302 except that the browser MUST retry with the GET method */
89const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]90 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]91 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]92 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]93 "Location: "; /* not terminated since it will be concatenated with the URL */
94
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]95/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
96const char *HTTP_401_fmt =
97 "HTTP/1.0 401 Unauthorized\r\n"
98 "Cache-Control: no-cache\r\n"
99 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]100 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]101 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
102 "\r\n"
103 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
104
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]105const char *HTTP_407_fmt =
106 "HTTP/1.0 407 Unauthorized\r\n"
107 "Cache-Control: no-cache\r\n"
108 "Connection: close\r\n"
109 "Content-Type: text/html\r\n"
110 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
111 "\r\n"
112 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
113
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]114
115const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]116 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]117 [HTTP_ERR_400] = 400,
118 [HTTP_ERR_403] = 403,
119 [HTTP_ERR_408] = 408,
120 [HTTP_ERR_500] = 500,
121 [HTTP_ERR_502] = 502,
122 [HTTP_ERR_503] = 503,
123 [HTTP_ERR_504] = 504,
124};
125
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]126static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]127 [HTTP_ERR_200] =
128 "HTTP/1.0 200 OK\r\n"
129 "Cache-Control: no-cache\r\n"
130 "Connection: close\r\n"
131 "Content-Type: text/html\r\n"
132 "\r\n"
133 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
134
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]135 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]136 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]137 "Cache-Control: no-cache\r\n"
138 "Connection: close\r\n"
139 "Content-Type: text/html\r\n"
140 "\r\n"
141 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
142
143 [HTTP_ERR_403] =
144 "HTTP/1.0 403 Forbidden\r\n"
145 "Cache-Control: no-cache\r\n"
146 "Connection: close\r\n"
147 "Content-Type: text/html\r\n"
148 "\r\n"
149 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
150
151 [HTTP_ERR_408] =
152 "HTTP/1.0 408 Request Time-out\r\n"
153 "Cache-Control: no-cache\r\n"
154 "Connection: close\r\n"
155 "Content-Type: text/html\r\n"
156 "\r\n"
157 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
158
159 [HTTP_ERR_500] =
160 "HTTP/1.0 500 Server Error\r\n"
161 "Cache-Control: no-cache\r\n"
162 "Connection: close\r\n"
163 "Content-Type: text/html\r\n"
164 "\r\n"
165 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
166
167 [HTTP_ERR_502] =
168 "HTTP/1.0 502 Bad Gateway\r\n"
169 "Cache-Control: no-cache\r\n"
170 "Connection: close\r\n"
171 "Content-Type: text/html\r\n"
172 "\r\n"
173 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
174
175 [HTTP_ERR_503] =
176 "HTTP/1.0 503 Service Unavailable\r\n"
177 "Cache-Control: no-cache\r\n"
178 "Connection: close\r\n"
179 "Content-Type: text/html\r\n"
180 "\r\n"
181 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
182
183 [HTTP_ERR_504] =
184 "HTTP/1.0 504 Gateway Time-out\r\n"
185 "Cache-Control: no-cache\r\n"
186 "Connection: close\r\n"
187 "Content-Type: text/html\r\n"
188 "\r\n"
189 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
190
191};
192
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]193/* status codes available for the stats admin page (strictly 4 chars length) */
194const char *stat_status_codes[STAT_STATUS_SIZE] = {
195 [STAT_STATUS_DENY] = "DENY",
196 [STAT_STATUS_DONE] = "DONE",
197 [STAT_STATUS_ERRP] = "ERRP",
198 [STAT_STATUS_EXCD] = "EXCD",
199 [STAT_STATUS_NONE] = "NONE",
200 [STAT_STATUS_PART] = "PART",
201 [STAT_STATUS_UNKN] = "UNKN",
202};
203
204
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]205/* We must put the messages here since GCC cannot initialize consts depending
206 * on strlen().
207 */
208struct chunk http_err_chunks[HTTP_ERR_SIZE];
209
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]210#define FD_SETS_ARE_BITFIELDS
211#ifdef FD_SETS_ARE_BITFIELDS
212/*
213 * This map is used with all the FD_* macros to check whether a particular bit
214 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
215 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
216 * byte should be encoded. Be careful to always pass bytes from 0 to 255
217 * exclusively to the macros.
218 */
219fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
220fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
221
222#else
223#error "Check if your OS uses bitfields for fd_sets"
224#endif
225
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]226void init_proto_http()
227{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]228 int i;
229 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]230 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]231
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]232 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
233 if (!http_err_msgs[msg]) {
234 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
235 abort();
236 }
237
238 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
239 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
240 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]241
242 /* initialize the log header encoding map : '{|}"#' should be encoded with
243 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
244 * URL encoding only requires '"', '#' to be encoded as well as non-
245 * printable characters above.
246 */
247 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
248 memset(url_encode_map, 0, sizeof(url_encode_map));
249 for (i = 0; i < 32; i++) {
250 FD_SET(i, hdr_encode_map);
251 FD_SET(i, url_encode_map);
252 }
253 for (i = 127; i < 256; i++) {
254 FD_SET(i, hdr_encode_map);
255 FD_SET(i, url_encode_map);
256 }
257
258 tmp = "\"#{|}";
259 while (*tmp) {
260 FD_SET(*tmp, hdr_encode_map);
261 tmp++;
262 }
263
264 tmp = "\"#";
265 while (*tmp) {
266 FD_SET(*tmp, url_encode_map);
267 tmp++;
268 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]269
270 /* memory allocations */
271 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]272 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]273}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]274
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]275/*
276 * We have 26 list of methods (1 per first letter), each of which can have
277 * up to 3 entries (2 valid, 1 null).
278 */
279struct http_method_desc {
280 http_meth_t meth;
281 int len;
282 const char text[8];
283};
284
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]285const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]286 ['C' - 'A'] = {
287 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
288 },
289 ['D' - 'A'] = {
290 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
291 },
292 ['G' - 'A'] = {
293 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
294 },
295 ['H' - 'A'] = {
296 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
297 },
298 ['P' - 'A'] = {
299 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
300 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
301 },
302 ['T' - 'A'] = {
303 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
304 },
305 /* rest is empty like this :
306 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
307 */
308};
309
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]310/* It is about twice as fast on recent architectures to lookup a byte in a
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]311 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]312 * RFC2616 for those chars.
313 */
314
315const char http_is_spht[256] = {
316 [' '] = 1, ['\t'] = 1,
317};
318
319const char http_is_crlf[256] = {
320 ['\r'] = 1, ['\n'] = 1,
321};
322
323const char http_is_lws[256] = {
324 [' '] = 1, ['\t'] = 1,
325 ['\r'] = 1, ['\n'] = 1,
326};
327
328const char http_is_sep[256] = {
329 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
330 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
331 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
332 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
333 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
334};
335
336const char http_is_ctl[256] = {
337 [0 ... 31] = 1,
338 [127] = 1,
339};
340
341/*
342 * A token is any ASCII char that is neither a separator nor a CTL char.
343 * Do not overwrite values in assignment since gcc-2.95 will not handle
344 * them correctly. Instead, define every non-CTL char's status.
345 */
346const char http_is_token[256] = {
347 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
348 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
349 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
350 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
351 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
352 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
353 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
354 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
355 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
356 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
357 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
358 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
359 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
360 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
361 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
362 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
363 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
364 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
365 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
366 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
367 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
368 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
369 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
370 ['|'] = 1, ['}'] = 0, ['~'] = 1,
371};
372
373
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]374/*
375 * An http ver_token is any ASCII which can be found in an HTTP version,
376 * which includes 'H', 'T', 'P', '/', '.' and any digit.
377 */
378const char http_is_ver_token[256] = {
379 ['.'] = 1, ['/'] = 1,
380 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
381 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
382 ['H'] = 1, ['P'] = 1, ['T'] = 1,
383};
384
385
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]386/*
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]387 * Silent debug that outputs only in strace, using fd #-1. Trash is modified.
388 */
389#if defined(DEBUG_FSM)
390static void http_silent_debug(int line, struct session *s)
391{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]392 chunk_printf(&trash,
393 "[%04d] req: p=%d(%d) s=%d bf=%08x an=%08x data=%p size=%d l=%d w=%p r=%p o=%p sm=%d fw=%ld tf=%08x\n",
394 line,
395 s->si[0].state, s->si[0].fd, s->txn.req.msg_state, s->req->flags, s->req->analysers,
396 s->req->buf->data, s->req->buf->size, s->req->l, s->req->w, s->req->r, s->req->buf->p, s->req->buf->o, s->req->to_forward, s->txn.flags);
397 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]398
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]399 chunk_printf(&trash,
400 " %04d rep: p=%d(%d) s=%d bf=%08x an=%08x data=%p size=%d l=%d w=%p r=%p o=%p sm=%d fw=%ld\n",
401 line,
402 s->si[1].state, s->si[1].fd, s->txn.rsp.msg_state, s->rep->flags, s->rep->analysers,
403 s->rep->buf->data, s->rep->buf->size, s->rep->l, s->rep->w, s->rep->r, s->rep->buf->p, s->rep->buf->o, s->rep->to_forward);
404 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]405}
406#else
407#define http_silent_debug(l,s) do { } while (0)
408#endif
409
410/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]411 * Adds a header and its CRLF at the tail of the message's buffer, just before
412 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]413 * The header is also automatically added to the index <hdr_idx>, and the end
414 * of headers is automatically adjusted. The number of bytes added is returned
415 * on success, otherwise <0 is returned indicating an error.
416 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]417int http_header_add_tail(struct http_msg *msg, struct hdr_idx *hdr_idx, const char *text)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]418{
419 int bytes, len;
420
421 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]422 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]423 if (!bytes)
424 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]425 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]426 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
427}
428
429/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]430 * Adds a header and its CRLF at the tail of the message's buffer, just before
431 * the last CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]432 * the buffer is only opened and the space reserved, but nothing is copied.
433 * The header is also automatically added to the index <hdr_idx>, and the end
434 * of headers is automatically adjusted. The number of bytes added is returned
435 * on success, otherwise <0 is returned indicating an error.
436 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]437int http_header_add_tail2(struct http_msg *msg,
438 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]439{
440 int bytes;
441
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]442 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]443 if (!bytes)
444 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]445 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]446 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
447}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]448
449/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]450 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
451 * If so, returns the position of the first non-space character relative to
452 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
453 * to return a pointer to the place after the first space. Returns 0 if the
454 * header name does not match. Checks are case-insensitive.
455 */
456int http_header_match2(const char *hdr, const char *end,
457 const char *name, int len)
458{
459 const char *val;
460
461 if (hdr + len >= end)
462 return 0;
463 if (hdr[len] != ':')
464 return 0;
465 if (strncasecmp(hdr, name, len) != 0)
466 return 0;
467 val = hdr + len + 1;
468 while (val < end && HTTP_IS_SPHT(*val))
469 val++;
470 if ((val >= end) && (len + 2 <= end - hdr))
471 return len + 2; /* we may replace starting from second space */
472 return val - hdr;
473}
474
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]475/* Find the end of the header value contained between <s> and <e>. See RFC2616,
476 * par 2.2 for more information. Note that it requires a valid header to return
477 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]478 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]479char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]480{
481 int quoted, qdpair;
482
483 quoted = qdpair = 0;
484 for (; s < e; s++) {
485 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]486 else if (quoted) {
487 if (*s == '\\') qdpair = 1;
488 else if (*s == '"') quoted = 0;
489 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]490 else if (*s == '"') quoted = 1;
491 else if (*s == ',') return s;
492 }
493 return s;
494}
495
496/* Find the first or next occurrence of header <name> in message buffer <sol>
497 * using headers index <idx>, and return it in the <ctx> structure. This
498 * structure holds everything necessary to use the header and find next
499 * occurrence. If its <idx> member is 0, the header is searched from the
500 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]501 * 1 when it finds a value, and 0 when there is no more. It is designed to work
502 * with headers defined as comma-separated lists. As a special case, if ctx->val
503 * is NULL when searching for a new values of a header, the current header is
504 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]505 */
506int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]507 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]508 struct hdr_ctx *ctx)
509{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]510 char *eol, *sov;
511 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]512
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]513 cur_idx = ctx->idx;
514 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]515 /* We have previously returned a value, let's search
516 * another one on the same line.
517 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]518 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]519 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]520 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]521 eol = sol + idx->v[cur_idx].len;
522
523 if (sov >= eol)
524 /* no more values in this header */
525 goto next_hdr;
526
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]527 /* values remaining for this header, skip the comma but save it
528 * for later use (eg: for header deletion).
529 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]530 sov++;
531 while (sov < eol && http_is_lws[(unsigned char)*sov])
532 sov++;
533
534 goto return_hdr;
535 }
536
537 /* first request for this header */
538 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]539 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]540 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]541 while (cur_idx) {
542 eol = sol + idx->v[cur_idx].len;
543
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]544 if (len == 0) {
545 /* No argument was passed, we want any header.
546 * To achieve this, we simply build a fake request. */
547 while (sol + len < eol && sol[len] != ':')
548 len++;
549 name = sol;
550 }
551
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]552 if ((len < eol - sol) &&
553 (sol[len] == ':') &&
554 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]555 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]556 sov = sol + len + 1;
557 while (sov < eol && http_is_lws[(unsigned char)*sov])
558 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]559
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]560 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]561 ctx->prev = old_idx;
562 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]563 ctx->idx = cur_idx;
564 ctx->val = sov - sol;
565
566 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]567 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]568 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]569 eol--;
570 ctx->tws++;
571 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]572 ctx->vlen = eol - sov;
573 return 1;
574 }
575 next_hdr:
576 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]577 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]578 cur_idx = idx->v[cur_idx].next;
579 }
580 return 0;
581}
582
583int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]584 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]585 struct hdr_ctx *ctx)
586{
587 return http_find_header2(name, strlen(name), sol, idx, ctx);
588}
589
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]590/* Remove one value of a header. This only works on a <ctx> returned by one of
591 * the http_find_header functions. The value is removed, as well as surrounding
592 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]593 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]594 * message <msg>. The new index is returned. If it is zero, it means there is
595 * no more header, so any processing may stop. The ctx is always left in a form
596 * that can be handled by http_find_header2() to find next occurrence.
597 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]598int http_remove_header2(struct http_msg *msg, struct hdr_idx *idx, struct hdr_ctx *ctx)
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]599{
600 int cur_idx = ctx->idx;
601 char *sol = ctx->line;
602 struct hdr_idx_elem *hdr;
603 int delta, skip_comma;
604
605 if (!cur_idx)
606 return 0;
607
608 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]609 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]610 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]611 delta = buffer_replace2(msg->chn->buf, sol, sol + hdr->len + hdr->cr + 1, NULL, 0);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]612 http_msg_move_end(msg, delta);
613 idx->used--;
614 hdr->len = 0; /* unused entry */
615 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]616 if (idx->tail == ctx->idx)
617 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]618 ctx->idx = ctx->prev; /* walk back to the end of previous header */
619 ctx->line -= idx->v[ctx->idx].len + idx->v[cur_idx].cr + 1;
620 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]621 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]622 return ctx->idx;
623 }
624
625 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]626 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
627 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]628 */
629
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]630 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]631 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]632 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]633 NULL, 0);
634 hdr->len += delta;
635 http_msg_move_end(msg, delta);
636 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]637 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]638 return ctx->idx;
639}
640
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]641/* This function handles a server error at the stream interface level. The
642 * stream interface is assumed to be already in a closed state. An optional
643 * message is copied into the input buffer, and an HTTP status code stored.
644 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]645 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]646 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]647static void http_server_error(struct session *t, struct stream_interface *si,
648 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]649{
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]650 channel_auto_read(si->ob);
651 channel_abort(si->ob);
652 channel_auto_close(si->ob);
653 channel_erase(si->ob);
654 channel_auto_close(si->ib);
655 channel_auto_read(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]656 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]657 t->txn.status = status;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]658 bo_inject(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]659 }
660 if (!(t->flags & SN_ERR_MASK))
661 t->flags |= err;
662 if (!(t->flags & SN_FINST_MASK))
663 t->flags |= finst;
664}
665
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]666/* This function returns the appropriate error location for the given session
667 * and message.
668 */
669
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]670struct chunk *http_error_message(struct session *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]671{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]672 if (s->be->errmsg[msgnum].str)
673 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]674 else if (s->fe->errmsg[msgnum].str)
675 return &s->fe->errmsg[msgnum];
676 else
677 return &http_err_chunks[msgnum];
678}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]679
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]680/*
681 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
682 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
683 */
684static http_meth_t find_http_meth(const char *str, const int len)
685{
686 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]687 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]688
689 m = ((unsigned)*str - 'A');
690
691 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]692 for (h = http_methods[m]; h->len > 0; h++) {
693 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]694 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]695 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]696 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]697 };
698 return HTTP_METH_OTHER;
699 }
700 return HTTP_METH_NONE;
701
702}
703
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]704/* Parse the URI from the given transaction (which is assumed to be in request
705 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
706 * It is returned otherwise.
707 */
708static char *
709http_get_path(struct http_txn *txn)
710{
711 char *ptr, *end;
712
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]713 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]714 end = ptr + txn->req.sl.rq.u_l;
715
716 if (ptr >= end)
717 return NULL;
718
719 /* RFC2616, par. 5.1.2 :
720 * Request-URI = "*" | absuri | abspath | authority
721 */
722
723 if (*ptr == '*')
724 return NULL;
725
726 if (isalpha((unsigned char)*ptr)) {
727 /* this is a scheme as described by RFC3986, par. 3.1 */
728 ptr++;
729 while (ptr < end &&
730 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
731 ptr++;
732 /* skip '://' */
733 if (ptr == end || *ptr++ != ':')
734 return NULL;
735 if (ptr == end || *ptr++ != '/')
736 return NULL;
737 if (ptr == end || *ptr++ != '/')
738 return NULL;
739 }
740 /* skip [user[:passwd]@]host[:[port]] */
741
742 while (ptr < end && *ptr != '/')
743 ptr++;
744
745 if (ptr == end)
746 return NULL;
747
748 /* OK, we got the '/' ! */
749 return ptr;
750}
751
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]752/* Returns a 302 for a redirectable request. This may only be called just after
753 * the stream interface has moved to SI_ST_ASS. Unprocessable requests are
754 * left unchanged and will follow normal proxy processing.
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]755 * NOTE: this function is designed to support being called once data are scheduled
756 * for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]757 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]758void perform_http_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]759{
760 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]761 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]762 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]763 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]764
765 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]766 trash.len = strlen(HTTP_302);
767 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]768
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]769 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]770
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]771 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]772 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]773 return;
774
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]775 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]776 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]777 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
778 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]779 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]780
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]781 /* 3: add the request URI. Since it was already forwarded, we need
782 * to temporarily rewind the buffer.
783 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]784 txn = &s->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]785 b_rew(s->req->buf, rewind = s->req->buf->o);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]786
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]787 path = http_get_path(txn);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]788 len = buffer_count(s->req->buf, path, b_ptr(s->req->buf, txn->req.sl.rq.u + txn->req.sl.rq.u_l));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]789
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]790 b_adv(s->req->buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]791
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]792 if (!path)
793 return;
794
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]795 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]796 return;
797
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]798 memcpy(trash.str + trash.len, path, len);
799 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]800
801 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]802 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
803 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]804 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]805 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
806 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]807 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]808
809 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]810 si_shutr(si);
811 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]812 si->err_type = SI_ET_NONE;
813 si->err_loc = NULL;
814 si->state = SI_ST_CLO;
815
816 /* send the message */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]817 http_server_error(s, si, SN_ERR_PRXCOND, SN_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]818
819 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]820 if (srv)
821 srv_inc_sess_ctr(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]822}
823
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]824/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]825 * that the server side is closed. Note that err_type is actually a
826 * bitmask, where almost only aborts may be cumulated with other
827 * values. We consider that aborted operations are more important
828 * than timeouts or errors due to the fact that nobody else in the
829 * logs might explain incomplete retries. All others should avoid
830 * being cumulated. It should normally not be possible to have multiple
831 * aborts at once, but just in case, the first one in sequence is reported.
832 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]833void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]834{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]835 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]836
837 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]838 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]839 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]840 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]841 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]842 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]843 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]844 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]845 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]846 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]847 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]848 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]849 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]850 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]851 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]852 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]853 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]854 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]855 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]856 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]857 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]858}
859
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]860extern const char sess_term_cond[8];
861extern const char sess_fin_state[8];
862extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]863struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]864struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]865struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]866
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]867/*
868 * Capture headers from message starting at <som> according to header list
869 * <cap_hdr>, and fill the <idx> structure appropriately.
870 */
871void capture_headers(char *som, struct hdr_idx *idx,
872 char **cap, struct cap_hdr *cap_hdr)
873{
874 char *eol, *sol, *col, *sov;
875 int cur_idx;
876 struct cap_hdr *h;
877 int len;
878
879 sol = som + hdr_idx_first_pos(idx);
880 cur_idx = hdr_idx_first_idx(idx);
881
882 while (cur_idx) {
883 eol = sol + idx->v[cur_idx].len;
884
885 col = sol;
886 while (col < eol && *col != ':')
887 col++;
888
889 sov = col + 1;
890 while (sov < eol && http_is_lws[(unsigned char)*sov])
891 sov++;
892
893 for (h = cap_hdr; h; h = h->next) {
894 if ((h->namelen == col - sol) &&
895 (strncasecmp(sol, h->name, h->namelen) == 0)) {
896 if (cap[h->index] == NULL)
897 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]898 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]899
900 if (cap[h->index] == NULL) {
901 Alert("HTTP capture : out of memory.\n");
902 continue;
903 }
904
905 len = eol - sov;
906 if (len > h->len)
907 len = h->len;
908
909 memcpy(cap[h->index], sov, len);
910 cap[h->index][len]=0;
911 }
912 }
913 sol = eol + idx->v[cur_idx].cr + 1;
914 cur_idx = idx->v[cur_idx].next;
915 }
916}
917
918
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]919/* either we find an LF at <ptr> or we jump to <bad>.
920 */
921#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
922
923/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
924 * otherwise to <http_msg_ood> with <state> set to <st>.
925 */
926#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
927 ptr++; \
928 if (likely(ptr < end)) \
929 goto good; \
930 else { \
931 state = (st); \
932 goto http_msg_ood; \
933 } \
934 } while (0)
935
936
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]937/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]938 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]939 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
940 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
941 * will give undefined results.
942 * Note that it is upon the caller's responsibility to ensure that ptr < end,
943 * and that msg->sol points to the beginning of the response.
944 * If a complete line is found (which implies that at least one CR or LF is
945 * found before <end>, the updated <ptr> is returned, otherwise NULL is
946 * returned indicating an incomplete line (which does not mean that parts have
947 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
948 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
949 * upon next call.
950 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]951 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]952 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
953 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]954 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]955 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]956const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]957 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]958 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]959{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]960 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]961
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]962 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]963 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]964 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]965 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]966 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
967
968 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]969 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]970 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
971 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]972 state = HTTP_MSG_ERROR;
973 break;
974
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]975 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]976 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]977 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]978 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]979 goto http_msg_rpcode;
980 }
981 if (likely(HTTP_IS_SPHT(*ptr)))
982 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
983 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]984 state = HTTP_MSG_ERROR;
985 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]986
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]987 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]988 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]989 if (likely(!HTTP_IS_LWS(*ptr)))
990 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
991
992 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]993 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]994 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
995 }
996
997 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]998 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]999 http_msg_rsp_reason:
1000 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1001 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1002 msg->sl.st.r_l = 0;
1003 goto http_msg_rpline_eol;
1004
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1005 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1006 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1007 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1008 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1009 goto http_msg_rpreason;
1010 }
1011 if (likely(HTTP_IS_SPHT(*ptr)))
1012 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1013 /* so it's a CR/LF, so there is no reason phrase */
1014 goto http_msg_rsp_reason;
1015
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1016 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1017 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1018 if (likely(!HTTP_IS_CRLF(*ptr)))
1019 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1020 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1021 http_msg_rpline_eol:
1022 /* We have seen the end of line. Note that we do not
1023 * necessarily have the \n yet, but at least we know that we
1024 * have EITHER \r OR \n, otherwise the response would not be
1025 * complete. We can then record the response length and return
1026 * to the caller which will be able to register it.
1027 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1028 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1029 return ptr;
1030
1031#ifdef DEBUG_FULL
1032 default:
1033 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1034 exit(1);
1035#endif
1036 }
1037
1038 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1039 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1040 if (ret_state)
1041 *ret_state = state;
1042 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1043 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1044 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1045}
1046
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1047/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1048 * This function parses a request line between <ptr> and <end>, starting with
1049 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1050 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1051 * will give undefined results.
1052 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1053 * and that msg->sol points to the beginning of the request.
1054 * If a complete line is found (which implies that at least one CR or LF is
1055 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1056 * returned indicating an incomplete line (which does not mean that parts have
1057 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1058 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1059 * upon next call.
1060 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1061 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1062 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1063 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1064 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1065 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1066const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1067 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1068 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1069{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1070 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1071
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1072 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1073 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1074 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1075 if (likely(HTTP_IS_TOKEN(*ptr)))
1076 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1077
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1078 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1079 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1080 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1081 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1082
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1083 if (likely(HTTP_IS_CRLF(*ptr))) {
1084 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1085 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1086 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1087 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1088 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1089 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1090 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1091 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1092 msg->sl.rq.v_l = 0;
1093 goto http_msg_rqline_eol;
1094 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1095 state = HTTP_MSG_ERROR;
1096 break;
1097
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1098 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1099 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1100 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1101 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1102 goto http_msg_rquri;
1103 }
1104 if (likely(HTTP_IS_SPHT(*ptr)))
1105 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1106 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1107 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1108
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1109 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1110 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1111 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1112 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1113
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1114 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1115 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1116 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1117 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1118
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1119 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1120 /* non-ASCII chars are forbidden unless option
1121 * accept-invalid-http-request is enabled in the frontend.
1122 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1123 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1124 if (msg->err_pos < -1)
1125 goto invalid_char;
1126 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1127 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1128 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1129 }
1130
1131 if (likely(HTTP_IS_CRLF(*ptr))) {
1132 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1133 goto http_msg_req09_uri_e;
1134 }
1135
1136 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1137 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1138 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1139 state = HTTP_MSG_ERROR;
1140 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1141
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1142 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1143 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1144 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1145 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1146 goto http_msg_rqver;
1147 }
1148 if (likely(HTTP_IS_SPHT(*ptr)))
1149 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1150 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1151 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1152
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1153 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1154 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1155 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1156 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1157
1158 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1159 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1160 http_msg_rqline_eol:
1161 /* We have seen the end of line. Note that we do not
1162 * necessarily have the \n yet, but at least we know that we
1163 * have EITHER \r OR \n, otherwise the request would not be
1164 * complete. We can then record the request length and return
1165 * to the caller which will be able to register it.
1166 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1167 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1168 return ptr;
1169 }
1170
1171 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1172 state = HTTP_MSG_ERROR;
1173 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1174
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1175#ifdef DEBUG_FULL
1176 default:
1177 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1178 exit(1);
1179#endif
1180 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1181
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1182 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1183 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1184 if (ret_state)
1185 *ret_state = state;
1186 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1187 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1188 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1189}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1190
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1191/*
1192 * Returns the data from Authorization header. Function may be called more
1193 * than once so data is stored in txn->auth_data. When no header is found
1194 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
1195 * searching again for something we are unable to find anyway.
1196 */
1197
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1198char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1199
1200int
1201get_http_auth(struct session *s)
1202{
1203
1204 struct http_txn *txn = &s->txn;
1205 struct chunk auth_method;
1206 struct hdr_ctx ctx;
1207 char *h, *p;
1208 int len;
1209
1210#ifdef DEBUG_AUTH
1211 printf("Auth for session %p: %d\n", s, txn->auth.method);
1212#endif
1213
1214 if (txn->auth.method == HTTP_AUTH_WRONG)
1215 return 0;
1216
1217 if (txn->auth.method)
1218 return 1;
1219
1220 txn->auth.method = HTTP_AUTH_WRONG;
1221
1222 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1223
1224 if (txn->flags & TX_USE_PX_CONN) {
1225 h = "Proxy-Authorization";
1226 len = strlen(h);
1227 } else {
1228 h = "Authorization";
1229 len = strlen(h);
1230 }
1231
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1232 if (!http_find_header2(h, len, s->req->buf->p, &txn->hdr_idx, &ctx))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1233 return 0;
1234
1235 h = ctx.line + ctx.val;
1236
1237 p = memchr(h, ' ', ctx.vlen);
1238 if (!p || p == h)
1239 return 0;
1240
1241 chunk_initlen(&auth_method, h, 0, p-h);
1242 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1243
1244 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1245
1246 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1247 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1248
1249 if (len < 0)
1250 return 0;
1251
1252
1253 get_http_auth_buff[len] = '\0';
1254
1255 p = strchr(get_http_auth_buff, ':');
1256
1257 if (!p)
1258 return 0;
1259
1260 txn->auth.user = get_http_auth_buff;
1261 *p = '\0';
1262 txn->auth.pass = p+1;
1263
1264 txn->auth.method = HTTP_AUTH_BASIC;
1265 return 1;
1266 }
1267
1268 return 0;
1269}
1270
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1271
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1272/*
1273 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1274 * depending on the initial msg->msg_state. The caller is responsible for
1275 * ensuring that the message does not wrap. The function can be preempted
1276 * everywhere when data are missing and recalled at the exact same location
1277 * with no information loss. The message may even be realigned between two
1278 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1279 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1280 * fields. Note that msg->sol will be initialized after completing the first
1281 * state, so that none of the msg pointers has to be initialized prior to the
1282 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1283 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1284void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1285{
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1286 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1287 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1288 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1289
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1290 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1291 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1292 ptr = buf->p + msg->next;
1293 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1294
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1295 if (unlikely(ptr >= end))
1296 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1297
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1298 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1299 /*
1300 * First, states that are specific to the response only.
1301 * We check them first so that request and headers are
1302 * closer to each other (accessed more often).
1303 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1304 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1305 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1306 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1307 /* we have a start of message, but we have to check
1308 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1309 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1310 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1311 if (unlikely(ptr != buf->p)) {
1312 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1313 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1314 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1315 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1316 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1317 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1318 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1319 hdr_idx_init(idx);
1320 state = HTTP_MSG_RPVER;
1321 goto http_msg_rpver;
1322 }
1323
1324 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1325 goto http_msg_invalid;
1326
1327 if (unlikely(*ptr == '\n'))
1328 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1329 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1330 /* stop here */
1331
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1332 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1333 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1334 EXPECT_LF_HERE(ptr, http_msg_invalid);
1335 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1336 /* stop here */
1337
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1338 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1339 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1340 case HTTP_MSG_RPVER_SP:
1341 case HTTP_MSG_RPCODE:
1342 case HTTP_MSG_RPCODE_SP:
1343 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1344 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1345 state, ptr, end,
1346 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1347 if (unlikely(!ptr))
1348 return;
1349
1350 /* we have a full response and we know that we have either a CR
1351 * or an LF at <ptr>.
1352 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1353 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1354
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1355 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1356 if (likely(*ptr == '\r'))
1357 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1358 goto http_msg_rpline_end;
1359
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1360 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1361 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1362 /* msg->sol must point to the first of CR or LF. */
1363 EXPECT_LF_HERE(ptr, http_msg_invalid);
1364 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1365 /* stop here */
1366
1367 /*
1368 * Second, states that are specific to the request only
1369 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1370 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1371 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1372 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1373 /* we have a start of message, but we have to check
1374 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1375 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1376 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1377 if (likely(ptr != buf->p)) {
1378 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1379 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1380 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1381 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1382 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1383 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1384 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1385 state = HTTP_MSG_RQMETH;
1386 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1387 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1388
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1389 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1390 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1391
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1392 if (unlikely(*ptr == '\n'))
1393 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1394 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1395 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1396
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1397 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1398 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1399 EXPECT_LF_HERE(ptr, http_msg_invalid);
1400 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1401 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1402
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1403 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1404 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1405 case HTTP_MSG_RQMETH_SP:
1406 case HTTP_MSG_RQURI:
1407 case HTTP_MSG_RQURI_SP:
1408 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1409 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1410 state, ptr, end,
1411 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1412 if (unlikely(!ptr))
1413 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1414
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1415 /* we have a full request and we know that we have either a CR
1416 * or an LF at <ptr>.
1417 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1418 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1419
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1420 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1421 if (likely(*ptr == '\r'))
1422 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1423 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1424
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1425 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1426 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1427 /* check for HTTP/0.9 request : no version information available.
1428 * msg->sol must point to the first of CR or LF.
1429 */
1430 if (unlikely(msg->sl.rq.v_l == 0))
1431 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1432
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1433 EXPECT_LF_HERE(ptr, http_msg_invalid);
1434 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1435 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1436
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1437 /*
1438 * Common states below
1439 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1440 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1441 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1442 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1443 if (likely(!HTTP_IS_CRLF(*ptr))) {
1444 goto http_msg_hdr_name;
1445 }
1446
1447 if (likely(*ptr == '\r'))
1448 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1449 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1450
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1451 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1452 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1453 /* assumes msg->sol points to the first char */
1454 if (likely(HTTP_IS_TOKEN(*ptr)))
1455 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1456
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1457 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1458 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1459
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1460 if (likely(msg->err_pos < -1) || *ptr == '\n')
1461 goto http_msg_invalid;
1462
1463 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1464 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1465
1466 /* and we still accept this non-token character */
1467 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1468
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1469 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1470 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1471 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1472 if (likely(HTTP_IS_SPHT(*ptr)))
1473 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1474
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1475 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1476 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1477
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1478 if (likely(!HTTP_IS_CRLF(*ptr))) {
1479 goto http_msg_hdr_val;
1480 }
1481
1482 if (likely(*ptr == '\r'))
1483 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1484 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1485
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1486 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1487 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1488 EXPECT_LF_HERE(ptr, http_msg_invalid);
1489 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lws, HTTP_MSG_HDR_L1_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1490
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1491 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1492 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1493 if (likely(HTTP_IS_SPHT(*ptr))) {
1494 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1495 for (; buf->p + msg->sov < ptr; msg->sov++)
1496 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1497 goto http_msg_hdr_l1_sp;
1498 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1499 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1500 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1501 goto http_msg_complete_header;
1502
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1503 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1504 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1505 /* assumes msg->sol points to the first char, and msg->sov
1506 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1507 */
1508 if (likely(!HTTP_IS_CRLF(*ptr)))
1509 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1510
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1511 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1512 /* Note: we could also copy eol into ->eoh so that we have the
1513 * real header end in case it ends with lots of LWS, but is this
1514 * really needed ?
1515 */
1516 if (likely(*ptr == '\r'))
1517 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1518 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1519
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1520 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1521 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1522 EXPECT_LF_HERE(ptr, http_msg_invalid);
1523 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lws, HTTP_MSG_HDR_L2_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1524
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1525 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1526 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1527 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1528 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1529 for (; buf->p + msg->eol < ptr; msg->eol++)
1530 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1531 goto http_msg_hdr_val;
1532 }
1533 http_msg_complete_header:
1534 /*
1535 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1536 * Assumes msg->sol points to the first char, msg->sov points
1537 * to the first character of the value and msg->eol to the
1538 * first CR or LF so we know how the line ends. We insert last
1539 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1540 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1541 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1542 idx, idx->tail) < 0))
1543 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1544
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1545 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1546 if (likely(!HTTP_IS_CRLF(*ptr))) {
1547 goto http_msg_hdr_name;
1548 }
1549
1550 if (likely(*ptr == '\r'))
1551 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1552 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1553
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1554 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1555 http_msg_last_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1556 /* Assumes msg->sol points to the first of either CR or LF */
1557 EXPECT_LF_HERE(ptr, http_msg_invalid);
1558 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1559 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1560 msg->eoh = msg->sol;
1561 msg->sol = 0;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1562 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1563 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1564
1565 case HTTP_MSG_ERROR:
1566 /* this may only happen if we call http_msg_analyser() twice with an error */
1567 break;
1568
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1569#ifdef DEBUG_FULL
1570 default:
1571 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1572 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1573#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1574 }
1575 http_msg_ood:
1576 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1577 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1578 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1579 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1580
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1581 http_msg_invalid:
1582 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1583 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1584 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1585 return;
1586}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1587
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1588/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1589 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1590 * nothing is done and 1 is returned.
1591 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1592static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1593{
1594 int delta;
1595 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1596 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1597
1598 if (msg->sl.rq.v_l != 0)
1599 return 1;
1600
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1601 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1602 delta = 0;
1603
1604 if (msg->sl.rq.u_l == 0) {
1605 /* if no URI was set, add "/" */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1606 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " /", 2);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1607 cur_end += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1608 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1609 }
1610 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1611 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " HTTP/1.0\r\n", 11);
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1612 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1613 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1614 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1615 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1616 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1617 NULL, NULL);
1618 if (unlikely(!cur_end))
1619 return 0;
1620
1621 /* we have a full HTTP/1.0 request now and we know that
1622 * we have either a CR or an LF at <ptr>.
1623 */
1624 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1625 return 1;
1626}
1627
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1628/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1629 * and "keep-alive" values. If we already know that some headers may safely
1630 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1631 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1632 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1633 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1634 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1635 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1636 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1637 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1638 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1639void http_parse_connection_header(struct http_txn *txn, struct http_msg *msg, int to_del)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1640{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1641 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1642 const char *hdr_val = "Connection";
1643 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1644
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1645 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1646 return;
1647
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1648 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1649 hdr_val = "Proxy-Connection";
1650 hdr_len = 16;
1651 }
1652
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1653 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1654 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1655 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1656 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1657 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1658 if (to_del & 2)
1659 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1660 else
1661 txn->flags |= TX_CON_KAL_SET;
1662 }
1663 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1664 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1665 if (to_del & 1)
1666 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1667 else
1668 txn->flags |= TX_CON_CLO_SET;
1669 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1670 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
1671 txn->flags |= TX_HDR_CONN_UPG;
1672 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1673 }
1674
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1675 txn->flags |= TX_HDR_CONN_PRS;
1676 return;
1677}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1678
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1679/* Apply desired changes on the Connection: header. Values may be removed and/or
1680 * added depending on the <wanted> flags, which are exclusively composed of
1681 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1682 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1683 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1684void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1685{
1686 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1687 const char *hdr_val = "Connection";
1688 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1689
1690 ctx.idx = 0;
1691
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1692
1693 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1694 hdr_val = "Proxy-Connection";
1695 hdr_len = 16;
1696 }
1697
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1698 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1699 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1700 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1701 if (wanted & TX_CON_KAL_SET)
1702 txn->flags |= TX_CON_KAL_SET;
1703 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1704 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1705 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1706 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1707 if (wanted & TX_CON_CLO_SET)
1708 txn->flags |= TX_CON_CLO_SET;
1709 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1710 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1711 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1712 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1713
1714 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1715 return;
1716
1717 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1718 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1719 hdr_val = "Connection: close";
1720 hdr_len = 17;
1721 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1722 hdr_val = "Proxy-Connection: close";
1723 hdr_len = 23;
1724 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1725 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1726 }
1727
1728 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1729 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1730 hdr_val = "Connection: keep-alive";
1731 hdr_len = 22;
1732 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1733 hdr_val = "Proxy-Connection: keep-alive";
1734 hdr_len = 28;
1735 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1736 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1737 }
1738 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1739}
1740
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1741/* Parse the chunk size at msg->next. Once done, it adjusts ->next to point to the
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1742 * first byte of body, and increments msg->sov by the number of bytes parsed,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1743 * so that we know we can forward between ->sol and ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1744 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1745 * Note: this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1746 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1747static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1748{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1749 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1750 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1751 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1752 const char *end = buf->data + buf->size;
1753 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1754 unsigned int chunk = 0;
1755
1756 /* The chunk size is in the following form, though we are only
1757 * interested in the size and CRLF :
1758 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1759 */
1760 while (1) {
1761 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1762 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1763 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1764 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1765 if (c < 0) /* not a hex digit anymore */
1766 break;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1767 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1768 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1769 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1770 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1771 chunk = (chunk << 4) + c;
1772 }
1773
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1774 /* empty size not allowed */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1775 if (ptr == ptr_old)
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1776 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1777
1778 while (http_is_spht[(unsigned char)*ptr]) {
1779 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1780 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1781 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1782 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1783 }
1784
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1785 /* Up to there, we know that at least one byte is present at *ptr. Check
1786 * for the end of chunk size.
1787 */
1788 while (1) {
1789 if (likely(HTTP_IS_CRLF(*ptr))) {
1790 /* we now have a CR or an LF at ptr */
1791 if (likely(*ptr == '\r')) {
1792 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1793 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1794 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1795 return 0;
1796 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1797
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1798 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1799 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1800 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1801 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1802 /* done */
1803 break;
1804 }
1805 else if (*ptr == ';') {
1806 /* chunk extension, ends at next CRLF */
1807 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1808 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1809 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1810 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1811
1812 while (!HTTP_IS_CRLF(*ptr)) {
1813 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1814 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1815 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1816 return 0;
1817 }
1818 /* we have a CRLF now, loop above */
1819 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1820 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1821 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1822 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1823 }
1824
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1825 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1826 * which may or may not be present. We save that into ->next and
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1827 * ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1828 */
Willy Tarreaub8ffd372012-09-27 15:08:56 +0200[diff] [blame]1829 if (ptr < ptr_old)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1830 msg->sov += buf->size;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1831 msg->sov += ptr - ptr_old;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1832 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]1833 msg->chunk_len = chunk;
1834 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1835 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1836 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1837 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1838 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1839 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1840}
1841
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1842/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1843 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1844 * the trailers is found, it is automatically scheduled to be forwarded,
1845 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
1846 * If not enough data are available, the function does not change anything
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1847 * except maybe msg->next and msg->sov if it could parse some lines, and returns
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1848 * zero. If a parse error is encountered, the function returns < 0 and does not
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1849 * change anything except maybe msg->next and msg->sov. Note that the message
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1850 * must already be in HTTP_MSG_TRAILERS state before calling this function,
1851 * which implies that all non-trailers data have already been scheduled for
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1852 * forwarding, and that the difference between msg->sol and msg->sov exactly
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1853 * matches the length of trailers already parsed and not forwarded. It is also
1854 * important to note that this function is designed to be able to parse wrapped
1855 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1856 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1857static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1858{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1859 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1860
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1861 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1862 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1863 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1864 const char *ptr = b_ptr(buf, msg->next);
1865 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1866 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1867
1868 /* scan current line and stop at LF or CRLF */
1869 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1870 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1871 return 0;
1872
1873 if (*ptr == '\n') {
1874 if (!p1)
1875 p1 = ptr;
1876 p2 = ptr;
1877 break;
1878 }
1879
1880 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1881 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1882 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1883 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1884 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1885 p1 = ptr;
1886 }
1887
1888 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1889 if (ptr >= buf->data + buf->size)
1890 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1891 }
1892
1893 /* after LF; point to beginning of next line */
1894 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1895 if (p2 >= buf->data + buf->size)
1896 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1897
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1898 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1899 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1900 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1901
1902 /* schedule this line for forwarding */
1903 msg->sov += bytes;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1904 if (msg->sov >= buf->size)
1905 msg->sov -= buf->size;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1906
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1907 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1908 /* LF/CRLF at beginning of line => end of trailers at p2.
1909 * Everything was scheduled for forwarding, there's nothing
1910 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]1911 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1912 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1913 msg->msg_state = HTTP_MSG_DONE;
1914 return 1;
1915 }
1916 /* OK, next line then */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1917 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1918 }
1919}
1920
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]1921/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1922 * a possible LF alone at the end of a chunk. It automatically adjusts msg->sov,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1923 * ->sol, ->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1924 * Note that the caller must ensure that ->p points to the first byte to parse.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1925 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
1926 * not enough data are available, the function does not change anything and
1927 * returns zero. If a parse error is encountered, the function returns < 0 and
1928 * does not change anything. Note: this function is designed to parse wrapped
1929 * CRLF at the end of the buffer.
1930 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1931static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1932{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1933 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1934 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1935 int bytes;
1936
1937 /* NB: we'll check data availabilty at the end. It's not a
1938 * problem because whatever we match first will be checked
1939 * against the correct length.
1940 */
1941 bytes = 1;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1942 ptr = buf->p;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1943 if (*ptr == '\r') {
1944 bytes++;
1945 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1946 if (ptr >= buf->data + buf->size)
1947 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1948 }
1949
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1950 if (bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1951 return 0;
1952
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1953 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1954 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1955 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1956 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1957
1958 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1959 if (ptr >= buf->data + buf->size)
1960 ptr = buf->data;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1961 /* prepare the CRLF to be forwarded (between ->sol and ->sov) */
1962 msg->sol = 0;
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1963 msg->sov = msg->next = bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1964 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
1965 return 1;
1966}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1967
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1968
1969/*
1970 * Selects a compression algorithm depending on the client request.
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1971 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1972int select_compression_request_header(struct session *s, struct buffer *req)
1973{
1974 struct http_txn *txn = &s->txn;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]1975 struct http_msg *msg = &txn->req;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1976 struct hdr_ctx ctx;
1977 struct comp_algo *comp_algo = NULL;
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]1978 struct comp_algo *comp_algo_back = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1979
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]1980 /* Disable compression for older user agents announcing themselves as "Mozilla/4"
1981 * unless they are known good (MSIE 6 with XP SP2, or MSIE 7 and later).
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1982 * See http://zoompf.com/2012/02/lose-the-wait-http-compression for more details.
1983 */
1984 ctx.idx = 0;
1985 if (http_find_header2("User-Agent", 10, req->p, &txn->hdr_idx, &ctx) &&
1986 ctx.vlen >= 9 &&
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]1987 memcmp(ctx.line + ctx.val, "Mozilla/4", 9) == 0 &&
1988 (ctx.vlen < 31 ||
1989 memcmp(ctx.line + ctx.val + 25, "MSIE ", 5) != 0 ||
1990 ctx.line[ctx.val + 30] < '6' ||
1991 (ctx.line[ctx.val + 30] == '6' &&
1992 (ctx.vlen < 54 || memcmp(ctx.line + 51, "SV1", 3) != 0)))) {
1993 s->comp_algo = NULL;
1994 return 0;
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]1995 }
1996
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]1997 ctx.idx = 0;
1998 /* no compression when Cache-Control: no-transform found */
1999 while (http_find_header2("Cache-Control", 13, req->p, &txn->hdr_idx, &ctx)) {
2000 if (word_match(ctx.line + ctx.val, ctx.vlen, "no-transform", 12)) {
2001 s->comp_algo = NULL;
2002 return 0;
2003 }
2004 }
2005
2006 /* search for the algo in the backend in priority or the frontend */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2007 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2008 ctx.idx = 0;
2009 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2010 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2011 if (word_match(ctx.line + ctx.val, ctx.vlen, comp_algo->name, comp_algo->name_len)) {
2012 s->comp_algo = comp_algo;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2013
2014 /* remove all occurrences of the header when "compression offload" is set */
2015
2016 if ((s->be->comp && s->be->comp->offload) ||
2017 (s->fe->comp && s->fe->comp->offload)) {
2018 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2019 ctx.idx = 0;
2020 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
2021 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2022 }
2023 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2024 return 1;
2025 }
2026 }
2027 }
2028 }
2029
2030 /* identity is implicit does not require headers */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2031 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
2032 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2033 if (comp_algo->add_data == identity_add_data) {
2034 s->comp_algo = comp_algo;
2035 return 1;
2036 }
2037 }
2038 }
2039
2040 s->comp_algo = NULL;
2041
2042 return 0;
2043}
2044
2045/*
2046 * Selects a comression algorithm depending of the server response.
2047 */
2048int select_compression_response_header(struct session *s, struct buffer *res)
2049{
2050 struct http_txn *txn = &s->txn;
2051 struct http_msg *msg = &txn->rsp;
2052 struct hdr_ctx ctx;
2053 struct comp_type *comp_type;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2054
2055 /* no common compression algorithm was found in request header */
2056 if (s->comp_algo == NULL)
2057 goto fail;
2058
2059 /* HTTP < 1.1 should not be compressed */
2060 if (!(msg->flags & HTTP_MSGF_VER_11))
2061 goto fail;
2062
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2063 ctx.idx = 0;
2064
2065 /* Content-Length is null */
2066 if (!(msg->flags & HTTP_MSGF_TE_CHNK) && msg->body_len == 0)
2067 goto fail;
2068
2069 /* content is already compressed */
2070 if (http_find_header2("Content-Encoding", 16, res->p, &txn->hdr_idx, &ctx))
2071 goto fail;
2072
2073 comp_type = NULL;
2074
2075 /* if there was a compression content-type option in the backend or the frontend
2076 * The backend have priority.
2077 */
2078 if ((s->be->comp && (comp_type = s->be->comp->types)) || (s->fe->comp && (comp_type = s->fe->comp->types))) {
2079 if (http_find_header2("Content-Type", 12, res->p, &txn->hdr_idx, &ctx)) {
2080 for (; comp_type; comp_type = comp_type->next) {
2081 if (strncmp(ctx.line+ctx.val, comp_type->name, comp_type->name_len) == 0)
2082 /* this Content-Type should be compressed */
2083 break;
2084 }
William Lallemandc04ca582012-11-12 13:56:25 +0100[diff] [blame]2085 } else {
2086 /* there is no Content-Type header */
2087 goto fail;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2088 }
2089 /* this Content-Type should not be compressed */
2090 if (comp_type == NULL)
2091 goto fail;
2092 }
2093
2094 ctx.idx = 0;
2095
William Lallemandd85f9172012-11-09 17:05:39 +0100[diff] [blame]2096 /* limit compression rate */
2097 if (global.comp_rate_lim > 0)
2098 if (read_freq_ctr(&global.comp_bps_in) > global.comp_rate_lim)
2099 goto fail;
2100
William Lallemand072a2bf2012-11-20 17:01:01 +0100[diff] [blame]2101 /* limit cpu usage */
2102 if (idle_pct < compress_min_idle)
2103 goto fail;
2104
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2105 /* initialize compression */
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2106 if (s->comp_algo->init(&s->comp_ctx, global.tune.comp_maxlevel) < 0)
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2107 goto fail;
2108
William Lallemandec3e3892012-11-12 17:02:18 +0100[diff] [blame]2109 s->flags |= SN_COMP_READY;
2110
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2111 /* remove Content-Length header */
2112 if ((msg->flags & HTTP_MSGF_CNT_LEN) && http_find_header2("Content-Length", 14, res->p, &txn->hdr_idx, &ctx))
2113 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2114
2115 /* add Transfer-Encoding header */
2116 if (!(msg->flags & HTTP_MSGF_TE_CHNK))
2117 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, "Transfer-Encoding: chunked", 26);
2118
2119 /*
2120 * Add Content-Encoding header when it's not identity encoding.
2121 * RFC 2616 : Identity encoding: This content-coding is used only in the
2122 * Accept-Encoding header, and SHOULD NOT be used in the Content-Encoding
2123 * header.
2124 */
2125 if (s->comp_algo->add_data != identity_add_data) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]2126 trash.len = 18;
2127 memcpy(trash.str, "Content-Encoding: ", trash.len);
2128 memcpy(trash.str + trash.len, s->comp_algo->name, s->comp_algo->name_len);
2129 trash.len += s->comp_algo->name_len;
2130 trash.str[trash.len] = '\0';
2131 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2132 }
2133
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2134 return 1;
2135
2136fail:
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2137 if (s->flags & SN_COMP_READY)
William Lallemand1c2d6222012-10-30 15:52:53 +0100[diff] [blame]2138 s->comp_algo->end(&s->comp_ctx);
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2139 s->comp_algo = NULL;
2140 s->flags &= ~SN_COMP_READY;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2141 return 0;
2142}
2143
2144
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2145/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2146 * processing can continue on next analysers, or zero if it either needs more
2147 * data or wants to immediately abort the request (eg: timeout, error, ...). It
2148 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
2149 * when it has nothing left to do, and may remove any analyser when it wants to
2150 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2151 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2152int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2153{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2154 /*
2155 * We will parse the partial (or complete) lines.
2156 * We will check the request syntax, and also join multi-line
2157 * headers. An index of all the lines will be elaborated while
2158 * parsing.
2159 *
2160 * For the parsing, we use a 28 states FSM.
2161 *
2162 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2163 * req->buf->p = beginning of request
2164 * req->buf->p + msg->eoh = end of processed headers / start of current one
2165 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2166 * msg->eol = end of current header or line (LF or CRLF)
2167 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2168 *
2169 * At end of parsing, we may perform a capture of the error (if any), and
2170 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
2171 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2172 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2173 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2174
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2175 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2176 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2177 struct http_txn *txn = &s->txn;
2178 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2179 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2180
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2181 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]2182 now_ms, __FUNCTION__,
2183 s,
2184 req,
2185 req->rex, req->wex,
2186 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2187 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2188 req->analysers);
2189
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2190 /* we're speaking HTTP here, so let's speak HTTP to the client */
2191 s->srv_error = http_return_srv_error;
2192
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2193 /* There's a protected area at the end of the buffer for rewriting
2194 * purposes. We don't want to start to parse the request if the
2195 * protected area is affected, because we may have to move processed
2196 * data later, which is much more complicated.
2197 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2198 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2199 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2200 unlikely(channel_full(req) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2201 bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2202 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite)) {
2203 if (req->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2204 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2205 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2206 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2207 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2208 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2209 return 0;
2210 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2211 if (bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2212 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite)
2213 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2214 }
2215
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2216 /* Note that we have the same problem with the response ; we
2217 * may want to send a redirect, error or anything which requires
2218 * some spare space. So we'll ensure that we have at least
2219 * maxrewrite bytes available in the response buffer before
2220 * processing that one. This will only affect pipelined
2221 * keep-alive requests.
2222 */
2223 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2224 unlikely(channel_full(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2225 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2226 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2227 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2228 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]2229 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2230 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2231 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2232 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2233 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2234 return 0;
2235 }
2236 }
2237
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2238 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2239 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2240 }
2241
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2242 /* 1: we might have to print this header in debug mode */
2243 if (unlikely((global.mode & MODE_DEBUG) &&
2244 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2245 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2246 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2247
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2248 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2249 /* this is a bit complex : in case of error on the request line,
2250 * we know that rq.l is still zero, so we display only the part
2251 * up to the end of the line (truncated by debug_hdr).
2252 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2253 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2254 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2255
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2256 sol += hdr_idx_first_pos(&txn->hdr_idx);
2257 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2258
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2259 while (cur_idx) {
2260 eol = sol + txn->hdr_idx.v[cur_idx].len;
2261 debug_hdr("clihdr", s, sol, eol);
2262 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2263 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2264 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2265 }
2266
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2267
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2268 /*
2269 * Now we quickly check if we have found a full valid request.
2270 * If not so, we check the FD and buffer states before leaving.
2271 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2272 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2273 * requests are checked first. When waiting for a second request
2274 * on a keep-alive session, if we encounter and error, close, t/o,
2275 * we note the error in the session flags but don't set any state.
2276 * Since the error will be noted there, it will not be counted by
2277 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2278 * Last, we may increase some tracked counters' http request errors on
2279 * the cases that are deliberately the client's fault. For instance,
2280 * a timeout or connection reset is not counted as an error. However
2281 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2282 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2283
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2284 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2285 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2286 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2287 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2288 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2289 session_inc_http_req_ctr(s);
2290 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2291 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2292 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2293 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2294
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2295 /* 1: Since we are in header mode, if there's no space
2296 * left for headers, we won't be able to free more
2297 * later, so the session will never terminate. We
2298 * must terminate it now.
2299 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2300 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2301 /* FIXME: check if URI is set and return Status
2302 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2303 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2304 session_inc_http_req_ctr(s);
2305 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2306 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2307 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2308 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2309 goto return_bad_req;
2310 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2311
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2312 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2313 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2314 if (!(s->flags & SN_ERR_MASK))
2315 s->flags |= SN_ERR_CLICL;
2316
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2317 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2318 goto failed_keep_alive;
2319
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2320 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2321 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2322 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]2323 session_inc_http_err_ctr(s);
2324 }
2325
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2326 msg->msg_state = HTTP_MSG_ERROR;
2327 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2328
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2329 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2330 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2331 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2332 if (s->listener->counters)
2333 s->listener->counters->failed_req++;
2334
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2335 if (!(s->flags & SN_FINST_MASK))
2336 s->flags |= SN_FINST_R;
2337 return 0;
2338 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2339
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2340 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2341 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]2342 if (!(s->flags & SN_ERR_MASK))
2343 s->flags |= SN_ERR_CLITO;
2344
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2345 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2346 goto failed_keep_alive;
2347
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2348 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2349 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2350 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]2351 session_inc_http_err_ctr(s);
2352 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2353 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2354 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
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_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2359 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2360 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2361 if (s->listener->counters)
2362 s->listener->counters->failed_req++;
2363
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2364 if (!(s->flags & SN_FINST_MASK))
2365 s->flags |= SN_FINST_R;
2366 return 0;
2367 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2368
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2369 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2370 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2371 if (!(s->flags & SN_ERR_MASK))
2372 s->flags |= SN_ERR_CLICL;
2373
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2374 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2375 goto failed_keep_alive;
2376
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2377 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2378 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]2379 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2380 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2381 msg->msg_state = HTTP_MSG_ERROR;
2382 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2383
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2384 session_inc_http_err_ctr(s);
2385 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2386 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2387 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2388 if (s->listener->counters)
2389 s->listener->counters->failed_req++;
2390
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2391 if (!(s->flags & SN_FINST_MASK))
2392 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2393 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2394 }
2395
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2396 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2397 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2398 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2399#ifdef TCP_QUICKACK
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2400 if (s->listener->options & LI_O_NOQUICKACK && req->buf->i) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2401 /* We need more data, we have to re-enable quick-ack in case we
2402 * previously disabled it, otherwise we might cause the client
2403 * to delay next data.
2404 */
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]2405 setsockopt(s->si[0].conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2406 }
2407#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2408
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2409 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2410 /* If the client starts to talk, let's fall back to
2411 * request timeout processing.
2412 */
2413 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2414 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2415 }
2416
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2417 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2418 if (!tick_isset(req->analyse_exp)) {
2419 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2420 (txn->flags & TX_WAIT_NEXT_RQ) &&
2421 tick_isset(s->be->timeout.httpka))
2422 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2423 else
2424 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2425 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2426
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2427 /* we're not ready yet */
2428 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2429
2430 failed_keep_alive:
2431 /* Here we process low-level errors for keep-alive requests. In
2432 * short, if the request is not the first one and it experiences
2433 * a timeout, read error or shutdown, we just silently close so
2434 * that the client can try again.
2435 */
2436 txn->status = 0;
2437 msg->msg_state = HTTP_MSG_RQBEFORE;
2438 req->analysers = 0;
2439 s->logs.logwait = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2440 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2441 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2442 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2443 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2444
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2445 /* OK now we have a complete HTTP request with indexed headers. Let's
2446 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2447 * 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]2448 * 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]2449 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2450 * byte after the last LF. msg->sov points to the first byte of data.
2451 * msg->eol cannot be trusted because it may have been left uninitialized
2452 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2453 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2454
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2455 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2456 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2457
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2458 if (txn->flags & TX_WAIT_NEXT_RQ) {
2459 /* kill the pending keep-alive timeout */
2460 txn->flags &= ~TX_WAIT_NEXT_RQ;
2461 req->analyse_exp = TICK_ETERNITY;
2462 }
2463
2464
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2465 /* Maybe we found in invalid header name while we were configured not
2466 * to block on that, so we have to capture it now.
2467 */
2468 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2469 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]2470
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2471 /*
2472 * 1: identify the method
2473 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2474 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2475
2476 /* we can make use of server redirect on GET and HEAD */
2477 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2478 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2479
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2480 /*
2481 * 2: check if the URI matches the monitor_uri.
2482 * We have to do this for every request which gets in, because
2483 * the monitor-uri is defined by the frontend.
2484 */
2485 if (unlikely((s->fe->monitor_uri_len != 0) &&
2486 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2487 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2488 s->fe->monitor_uri,
2489 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2490 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2491 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2492 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2493 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2494
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2495 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2496 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2497
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2498 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2499 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2500 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]2501
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2502 ret = acl_pass(ret);
2503 if (cond->pol == ACL_COND_UNLESS)
2504 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2505
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2506 if (ret) {
2507 /* we fail this request, let's return 503 service unavail */
2508 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2509 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2510 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2511 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2512 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2513
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2514 /* nothing to fail, let's reply normaly */
2515 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2516 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2517 goto return_prx_cond;
2518 }
2519
2520 /*
2521 * 3: Maybe we have to copy the original REQURI for the logs ?
2522 * Note: we cannot log anymore if the request has been
2523 * classified as invalid.
2524 */
2525 if (unlikely(s->logs.logwait & LW_REQ)) {
2526 /* we have a complete HTTP request that we must log */
2527 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2528 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2529
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2530 if (urilen >= REQURI_LEN)
2531 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2532 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2533 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2534
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2535 if (!(s->logs.logwait &= ~LW_REQ))
2536 s->do_log(s);
2537 } else {
2538 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2539 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2540 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2541
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]2542 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
2543 s->unique_id = pool_alloc2(pool2_uniqueid);
2544 }
2545
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2546 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2547 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2548 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2549
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2550 /* ... and check if the request is HTTP/1.1 or above */
2551 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2552 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2553 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2554 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2555 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2556
2557 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2558 txn->flags &= ~(TX_HDR_CONN_PRS | TX_HDR_CONN_CLO | TX_HDR_CONN_KAL | TX_HDR_CONN_UPG);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2559
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2560 /* if the frontend has "option http-use-proxy-header", we'll check if
2561 * we have what looks like a proxied connection instead of a connection,
2562 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2563 * Note that this is *not* RFC-compliant, however browsers and proxies
2564 * happen to do that despite being non-standard :-(
2565 * We consider that a request not beginning with either '/' or '*' is
2566 * a proxied connection, which covers both "scheme://location" and
2567 * CONNECT ip:port.
2568 */
2569 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2570 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2571 txn->flags |= TX_USE_PX_CONN;
2572
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2573 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2574 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2575
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2576 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2577 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2578 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2579 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2580
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2581 /* 6: determine the transfer-length.
2582 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2583 * the presence of a message-body in a REQUEST and its transfer length
2584 * must be determined that way (in order of precedence) :
2585 * 1. The presence of a message-body in a request is signaled by the
2586 * inclusion of a Content-Length or Transfer-Encoding header field
2587 * in the request's header fields. When a request message contains
2588 * both a message-body of non-zero length and a method that does
2589 * not define any semantics for that request message-body, then an
2590 * origin server SHOULD either ignore the message-body or respond
2591 * with an appropriate error message (e.g., 413). A proxy or
2592 * gateway, when presented the same request, SHOULD either forward
2593 * the request inbound with the message- body or ignore the
2594 * message-body when determining a response.
2595 *
2596 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2597 * and the "chunked" transfer-coding (Section 6.2) is used, the
2598 * transfer-length is defined by the use of this transfer-coding.
2599 * If a Transfer-Encoding header field is present and the "chunked"
2600 * transfer-coding is not present, the transfer-length is defined
2601 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2602 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2603 * 3. If a Content-Length header field is present, its decimal value in
2604 * OCTETs represents both the entity-length and the transfer-length.
2605 * If a message is received with both a Transfer-Encoding header
2606 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2607 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2608 * 4. By the server closing the connection. (Closing the connection
2609 * cannot be used to indicate the end of a request body, since that
2610 * would leave no possibility for the server to send back a response.)
2611 *
2612 * Whenever a transfer-coding is applied to a message-body, the set of
2613 * transfer-codings MUST include "chunked", unless the message indicates
2614 * it is terminated by closing the connection. When the "chunked"
2615 * transfer-coding is used, it MUST be the last transfer-coding applied
2616 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2617 */
2618
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2619 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2620 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2621 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2622 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2623 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2624 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2625 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2626 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2627 /* bad transfer-encoding (chunked followed by something else) */
2628 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2629 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2630 break;
2631 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2632 }
2633
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2634 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2635 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2636 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2637 signed long long cl;
2638
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2639 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2640 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2641 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2642 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2643
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2644 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2645 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2646 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2647 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2648
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2649 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2650 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2651 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2652 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2653
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2654 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2655 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2656 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2657 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2658
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2659 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2660 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2661 }
2662
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2663 /* bodyless requests have a known length */
2664 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2665 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2666
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2667 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2668 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2669 req->analyse_exp = TICK_ETERNITY;
2670 return 1;
2671
2672 return_bad_req:
2673 /* We centralize bad requests processing here */
2674 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2675 /* we detected a parsing error. We want to archive this request
2676 * in the dedicated proxy area for later troubleshooting.
2677 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2678 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]2679 }
2680
2681 txn->req.msg_state = HTTP_MSG_ERROR;
2682 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2683 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2684
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2685 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2686 if (s->listener->counters)
2687 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2688
2689 return_prx_cond:
2690 if (!(s->flags & SN_ERR_MASK))
2691 s->flags |= SN_ERR_PRXCOND;
2692 if (!(s->flags & SN_FINST_MASK))
2693 s->flags |= SN_FINST_R;
2694
2695 req->analysers = 0;
2696 req->analyse_exp = TICK_ETERNITY;
2697 return 0;
2698}
2699
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2700/* We reached the stats page through a POST request.
2701 * Parse the posted data and enable/disable servers if necessary.
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2702 * Returns 1 if request was parsed or zero if it needs more data.
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2703 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2704int 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]2705{
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2706 struct proxy *px = NULL;
2707 struct server *sv = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2708
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2709 char key[LINESIZE];
2710 int action = ST_ADM_ACTION_NONE;
2711 int reprocess = 0;
2712
2713 int total_servers = 0;
2714 int altered_servers = 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2715
2716 char *first_param, *cur_param, *next_param, *end_params;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]2717 char *st_cur_param = NULL;
2718 char *st_next_param = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2719
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2720 first_param = req->buf->p + txn->req.eoh + 2;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2721 end_params = first_param + txn->req.body_len;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2722
2723 cur_param = next_param = end_params;
2724
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2725 if (end_params >= req->buf->data + req->buf->size - global.tune.maxrewrite) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2726 /* Prevent buffer overflow */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2727 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2728 return 1;
2729 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2730 else if (end_params > req->buf->p + req->buf->i) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2731 /* we need more data */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2732 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2733 return 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2734 }
2735
2736 *end_params = '\0';
2737
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2738 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2739
2740 /*
2741 * Parse the parameters in reverse order to only store the last value.
2742 * From the html form, the backend and the action are at the end.
2743 */
2744 while (cur_param > first_param) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2745 char *value;
2746 int poffset, plen;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2747
2748 cur_param--;
2749 if ((*cur_param == '&') || (cur_param == first_param)) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2750 reprocess_servers:
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2751 /* Parse the key */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2752 poffset = (cur_param != first_param ? 1 : 0);
2753 plen = next_param - cur_param + (cur_param == first_param ? 1 : 0);
2754 if ((plen > 0) && (plen <= sizeof(key))) {
2755 strncpy(key, cur_param + poffset, plen);
2756 key[plen - 1] = '\0';
2757 } else {
2758 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
2759 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2760 }
2761
2762 /* Parse the value */
2763 value = key;
2764 while (*value != '\0' && *value != '=') {
2765 value++;
2766 }
2767 if (*value == '=') {
2768 /* Ok, a value is found, we can mark the end of the key */
2769 *value++ = '\0';
2770 }
2771
Willy Tarreaubf9c2fc2011-05-31 18:06:18 +0200[diff] [blame]2772 if (!url_decode(key) || !url_decode(value))
2773 break;
2774
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2775 /* Now we can check the key to see what to do */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2776 if (!px && (strcmp(key, "b") == 0)) {
2777 if ((px = findproxy(value, PR_CAP_BE)) == NULL) {
2778 /* the backend name is unknown or ambiguous (duplicate names) */
2779 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2780 goto out;
2781 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2782 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2783 else if (!action && (strcmp(key, "action") == 0)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2784 if (strcmp(value, "disable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2785 action = ST_ADM_ACTION_DISABLE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2786 }
2787 else if (strcmp(value, "enable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2788 action = ST_ADM_ACTION_ENABLE;
2789 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2790 else if (strcmp(value, "stop") == 0) {
2791 action = ST_ADM_ACTION_STOP;
2792 }
2793 else if (strcmp(value, "start") == 0) {
2794 action = ST_ADM_ACTION_START;
2795 }
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2796 else if (strcmp(value, "shutdown") == 0) {
2797 action = ST_ADM_ACTION_SHUTDOWN;
2798 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2799 else {
2800 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2801 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2802 }
2803 }
2804 else if (strcmp(key, "s") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2805 if (!(px && action)) {
2806 /*
2807 * Indicates that we'll need to reprocess the parameters
2808 * as soon as backend and action are known
2809 */
2810 if (!reprocess) {
2811 st_cur_param = cur_param;
2812 st_next_param = next_param;
2813 }
2814 reprocess = 1;
2815 }
2816 else if ((sv = findserver(px, value)) != NULL) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2817 switch (action) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2818 case ST_ADM_ACTION_DISABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2819 if ((px->state != PR_STSTOPPED) && !(sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2820 /* Not already in maintenance, we can change the server state */
2821 sv->state |= SRV_MAINTAIN;
2822 set_server_down(sv);
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2823 altered_servers++;
2824 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2825 }
2826 break;
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2827 case ST_ADM_ACTION_ENABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2828 if ((px->state != PR_STSTOPPED) && (sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2829 /* Already in maintenance, we can change the server state */
2830 set_server_up(sv);
Willy Tarreau70461302010-10-22 14:39:02 +0200[diff] [blame]2831 sv->health = sv->rise; /* up, but will fall down at first failure */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2832 altered_servers++;
2833 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2834 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2835 break;
2836 case ST_ADM_ACTION_STOP:
2837 case ST_ADM_ACTION_START:
2838 if (action == ST_ADM_ACTION_START)
2839 sv->uweight = sv->iweight;
2840 else
2841 sv->uweight = 0;
2842
2843 if (px->lbprm.algo & BE_LB_PROP_DYN) {
2844 /* we must take care of not pushing the server to full throttle during slow starts */
2845 if ((sv->state & SRV_WARMINGUP) && (px->lbprm.algo & BE_LB_PROP_DYN))
2846 sv->eweight = (BE_WEIGHT_SCALE * (now.tv_sec - sv->last_change) + sv->slowstart - 1) / sv->slowstart;
2847 else
2848 sv->eweight = BE_WEIGHT_SCALE;
2849 sv->eweight *= sv->uweight;
2850 } else {
2851 sv->eweight = sv->uweight;
2852 }
2853
2854 /* static LB algorithms are a bit harder to update */
2855 if (px->lbprm.update_server_eweight)
2856 px->lbprm.update_server_eweight(sv);
2857 else if (sv->eweight) {
2858 if (px->lbprm.set_server_status_up)
2859 px->lbprm.set_server_status_up(sv);
2860 }
2861 else {
2862 if (px->lbprm.set_server_status_down)
2863 px->lbprm.set_server_status_down(sv);
2864 }
2865 altered_servers++;
2866 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2867 break;
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2868 case ST_ADM_ACTION_SHUTDOWN:
2869 if (px->state != PR_STSTOPPED) {
2870 struct session *sess, *sess_bck;
2871
2872 list_for_each_entry_safe(sess, sess_bck, &sv->actconns, by_srv)
2873 if (sess->srv_conn == sv)
2874 session_shutdown(sess, SN_ERR_KILLED);
2875
2876 altered_servers++;
2877 total_servers++;
2878 }
2879 break;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2880 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2881 } else {
2882 /* the server name is unknown or ambiguous (duplicate names) */
2883 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2884 }
2885 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2886 if (reprocess && px && action) {
2887 /* Now, we know the backend and the action chosen by the user.
2888 * We can safely restart from the first server parameter
2889 * to reprocess them
2890 */
2891 cur_param = st_cur_param;
2892 next_param = st_next_param;
2893 reprocess = 0;
2894 goto reprocess_servers;
2895 }
2896
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2897 next_param = cur_param;
2898 }
2899 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2900
2901 if (total_servers == 0) {
2902 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
2903 }
2904 else if (altered_servers == 0) {
2905 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2906 }
2907 else if (altered_servers == total_servers) {
2908 si->applet.ctx.stats.st_code = STAT_STATUS_DONE;
2909 }
2910 else {
2911 si->applet.ctx.stats.st_code = STAT_STATUS_PART;
2912 }
2913 out:
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2914 return 1;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2915}
2916
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2917/* returns a pointer to the first rule which forbids access (deny or http_auth),
2918 * or NULL if everything's OK.
2919 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2920static inline struct http_req_rule *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2921http_check_access_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
2922{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2923 struct http_req_rule *rule;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2924
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2925 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2926 int ret = 1;
2927
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2928 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2929 continue;
2930
2931 /* check condition, but only if attached */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2932 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2933 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]2934 ret = acl_pass(ret);
2935
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2936 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2937 ret = !ret;
2938 }
2939
2940 if (ret) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2941 if (rule->action == HTTP_REQ_ACT_ALLOW)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2942 return NULL; /* no problem */
2943 else
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2944 return rule; /* most likely a deny or auth rule */
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2945 }
2946 }
2947 return NULL;
2948}
2949
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2950/* This stream analyser runs all HTTP request processing which is common to
2951 * frontends and backends, which means blocking ACLs, filters, connection-close,
2952 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2953 * 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]2954 * either needs more data or wants to immediately abort the request (eg: deny,
2955 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2956 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2957int 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]2958{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2959 struct http_txn *txn = &s->txn;
2960 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2961 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2962 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2963 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]2964 struct cond_wordlist *wl;
Simon Horman70735c92011-06-07 11:07:50 +0900[diff] [blame]2965 int do_stats;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2966
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2967 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2968 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2969 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2970 return 0;
2971 }
2972
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2973 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2974 req->analyse_exp = TICK_ETERNITY;
2975
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2976 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]2977 now_ms, __FUNCTION__,
2978 s,
2979 req,
2980 req->rex, req->wex,
2981 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2982 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2983 req->analysers);
2984
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2985 /* first check whether we have some ACLs set to block this request */
2986 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2987 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]2988
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2989 ret = acl_pass(ret);
2990 if (cond->pol == ACL_COND_UNLESS)
2991 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]2992
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2993 if (ret) {
2994 txn->status = 403;
2995 /* let's log the request time */
2996 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2997 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2998 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2999 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3000 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3001 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3002
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3003 /* evaluate http-request rules */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3004 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]3005
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3006 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3007 if (!http_req_last_rule) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3008 do_stats = stats_check_uri(s->rep->prod, txn, px);
3009 if (do_stats)
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3010 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]3011 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3012 else
3013 do_stats = 0;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3014
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3015 /* return a 403 if either rule has blocked */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3016 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]3017 txn->status = 403;
3018 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3019 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3020 session_inc_http_err_ctr(s);
Willy Tarreau6da0f6d2011-01-06 18:19:50 +0100[diff] [blame]3021 s->fe->fe_counters.denied_req++;
3022 if (an_bit == AN_REQ_HTTP_PROCESS_BE)
3023 s->be->be_counters.denied_req++;
3024 if (s->listener->counters)
3025 s->listener->counters->denied_req++;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3026 goto return_prx_cond;
3027 }
3028
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3029 /* try headers filters */
3030 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3031 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3032 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3033
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3034 /* has the request been denied ? */
3035 if (txn->flags & TX_CLDENY) {
3036 /* no need to go further */
3037 txn->status = 403;
3038 /* let's log the request time */
3039 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3040 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3041 session_inc_http_err_ctr(s);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3042 goto return_prx_cond;
3043 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3044
3045 /* When a connection is tarpitted, we use the tarpit timeout,
3046 * which may be the same as the connect timeout if unspecified.
3047 * If unset, then set it to zero because we really want it to
3048 * eventually expire. We build the tarpit as an analyser.
3049 */
3050 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3051 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3052 /* wipe the request out so that we can drop the connection early
3053 * if the client closes first.
3054 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3055 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3056 req->analysers = 0; /* remove switching rules etc... */
3057 req->analysers |= AN_REQ_HTTP_TARPIT;
3058 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3059 if (!req->analyse_exp)
3060 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3061 session_inc_http_err_ctr(s);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3062 return 1;
3063 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3064 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3065
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3066 /* Until set to anything else, the connection mode is set as TUNNEL. It will
3067 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3068 * Option httpclose by itself does not set a mode, it remains a tunnel mode
3069 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3070 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
3071 * avoid to redo the same work if FE and BE have the same settings (common).
3072 * The method consists in checking if options changed between the two calls
3073 * (implying that either one is non-null, or one of them is non-null and we
3074 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]3075 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3076
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]3077 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
3078 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
3079 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
3080 (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]3081 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3082
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3083 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
3084 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3085 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]3086 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
3087 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3088 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3089 tmp = TX_CON_WANT_CLO;
3090
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3091 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
3092 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3093
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3094 if (!(txn->flags & TX_HDR_CONN_PRS)) {
3095 /* parse the Connection header and possibly clean it */
3096 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3097 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]3098 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
3099 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3100 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3101 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3102 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3103 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3104 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3105
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3106 /* check if client or config asks for explicit close in KAL/SCL */
3107 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
3108 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
3109 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3110 (!(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]3111 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3112 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]3113 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3114 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3115 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]3116
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3117 /* we can be blocked here because the request needs to be authenticated,
3118 * either to pass or to access stats.
3119 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3120 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_HTTP_AUTH) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3121 char *realm = http_req_last_rule->http_auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3122
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3123 if (!realm)
3124 realm = do_stats?STATS_DEFAULT_REALM:px->id;
3125
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3126 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, realm);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3127 txn->status = 401;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3128 stream_int_retnclose(req->prod, &trash);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3129 /* on 401 we still count one error, because normal browsing
3130 * won't significantly increase the counter but brute force
3131 * attempts will.
3132 */
3133 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3134 goto return_prx_cond;
3135 }
3136
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3137 /* add request headers from the rule sets in the same order */
3138 list_for_each_entry(wl, &px->req_add, list) {
3139 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3140 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]3141 ret = acl_pass(ret);
3142 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3143 ret = !ret;
3144 if (!ret)
3145 continue;
3146 }
3147
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3148 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3149 goto return_bad_req;
3150 }
3151
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3152 if (do_stats) {
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3153 struct stats_admin_rule *stats_admin_rule;
3154
3155 /* We need to provide stats for this request.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3156 * FIXME!!! that one is rather dangerous, we want to
3157 * make it follow standard rules (eg: clear req->analysers).
3158 */
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3159
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3160 /* now check whether we have some admin rules for this request */
3161 list_for_each_entry(stats_admin_rule, &s->be->uri_auth->admin_rules, list) {
3162 int ret = 1;
3163
3164 if (stats_admin_rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3165 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]3166 ret = acl_pass(ret);
3167 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3168 ret = !ret;
3169 }
3170
3171 if (ret) {
3172 /* no rule, or the rule matches */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3173 s->rep->prod->applet.ctx.stats.flags |= STAT_ADMIN;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3174 break;
3175 }
3176 }
3177
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3178 /* Was the status page requested with a POST ? */
3179 if (txn->meth == HTTP_METH_POST) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3180 if (s->rep->prod->applet.ctx.stats.flags & STAT_ADMIN) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3181 if (msg->msg_state < HTTP_MSG_100_SENT) {
3182 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3183 * send an HTTP/1.1 100 Continue intermediate response.
3184 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3185 if (msg->flags & HTTP_MSGF_VER_11) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3186 struct hdr_ctx ctx;
3187 ctx.idx = 0;
3188 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3189 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3190 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3191 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3192 }
3193 }
3194 msg->msg_state = HTTP_MSG_100_SENT;
3195 s->logs.tv_request = now; /* update the request timer to reflect full request */
3196 }
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3197 if (!http_process_req_stat_post(s->rep->prod, txn, req)) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3198 /* we need more data */
3199 req->analysers |= an_bit;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3200 channel_dont_connect(req);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3201 return 0;
3202 }
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3203 } else {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3204 s->rep->prod->applet.ctx.stats.st_code = STAT_STATUS_DENY;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3205 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3206 }
3207
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3208 s->logs.tv_request = now;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3209 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreaub24281b2011-02-13 13:16:36 +0100[diff] [blame]3210 stream_int_register_handler(s->rep->prod, &http_stats_applet);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]3211 s->target = s->rep->prod->conn->target; // for logging only
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3212 s->rep->prod->conn->xprt_ctx = s;
Willy Tarreaubc4af052011-02-13 13:25:14 +0100[diff] [blame]3213 s->rep->prod->applet.st0 = s->rep->prod->applet.st1 = 0;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3214 req->analysers = 0;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]3215 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3216 s->fe->fe_counters.intercepted_req++;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3217
3218 return 0;
3219
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3220 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3221
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3222 /* check whether we have some ACLs set to redirect this request */
3223 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3224 int ret = ACL_PAT_PASS;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3225
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3226 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3227 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]3228 ret = acl_pass(ret);
3229 if (rule->cond->pol == ACL_COND_UNLESS)
3230 ret = !ret;
3231 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3232
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3233 if (ret) {
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3234 const char *msg_fmt;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3235
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3236 /* build redirect message */
3237 switch(rule->code) {
3238 case 303:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3239 msg_fmt = HTTP_303;
3240 break;
3241 case 301:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3242 msg_fmt = HTTP_301;
3243 break;
3244 case 302:
3245 default:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3246 msg_fmt = HTTP_302;
3247 break;
3248 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3249
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3250 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3251 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3252
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3253 switch(rule->type) {
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3254 case REDIRECT_TYPE_SCHEME: {
3255 const char *path;
3256 const char *host;
3257 struct hdr_ctx ctx;
3258 int pathlen;
3259 int hostlen;
3260
3261 host = "";
3262 hostlen = 0;
3263 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3264 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]3265 host = ctx.line + ctx.val;
3266 hostlen = ctx.vlen;
3267 }
3268
3269 path = http_get_path(txn);
3270 /* build message using path */
3271 if (path) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3272 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]3273 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3274 int qs = 0;
3275 while (qs < pathlen) {
3276 if (path[qs] == '?') {
3277 pathlen = qs;
3278 break;
3279 }
3280 qs++;
3281 }
3282 }
3283 } else {
3284 path = "/";
3285 pathlen = 1;
3286 }
3287
3288 /* check if we can add scheme + "://" + host + path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3289 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3290 goto return_bad_req;
3291
3292 /* add scheme */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3293 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3294 trash.len += rule->rdr_len;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3295
3296 /* add "://" */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3297 memcpy(trash.str + trash.len, "://", 3);
3298 trash.len += 3;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3299
3300 /* add host */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3301 memcpy(trash.str + trash.len, host, hostlen);
3302 trash.len += hostlen;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3303
3304 /* add path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3305 memcpy(trash.str + trash.len, path, pathlen);
3306 trash.len += pathlen;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3307
3308 /* append a slash at the end of the location is needed and missing */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3309 if (trash.len && trash.str[trash.len - 1] != '/' &&
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3310 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3311 if (trash.len > trash.size - 5)
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3312 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3313 trash.str[trash.len] = '/';
3314 trash.len++;
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3315 }
3316
3317 break;
3318 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3319 case REDIRECT_TYPE_PREFIX: {
3320 const char *path;
3321 int pathlen;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3322
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3323 path = http_get_path(txn);
3324 /* build message using path */
3325 if (path) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3326 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]3327 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3328 int qs = 0;
3329 while (qs < pathlen) {
3330 if (path[qs] == '?') {
3331 pathlen = qs;
3332 break;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3333 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3334 qs++;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3335 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3336 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3337 } else {
3338 path = "/";
3339 pathlen = 1;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3340 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3341
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3342 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3343 goto return_bad_req;
3344
3345 /* add prefix. Note that if prefix == "/", we don't want to
3346 * add anything, otherwise it makes it hard for the user to
3347 * configure a self-redirection.
3348 */
3349 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3350 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3351 trash.len += rule->rdr_len;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3352 }
3353
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3354 /* add path */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3355 memcpy(trash.str + trash.len, path, pathlen);
3356 trash.len += pathlen;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3357
3358 /* append a slash at the end of the location is needed and missing */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3359 if (trash.len && trash.str[trash.len - 1] != '/' &&
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3360 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3361 if (trash.len > trash.size - 5)
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3362 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3363 trash.str[trash.len] = '/';
3364 trash.len++;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3365 }
3366
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3367 break;
3368 }
3369 case REDIRECT_TYPE_LOCATION:
3370 default:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3371 if (trash.len + rule->rdr_len > trash.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3372 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3373
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3374 /* add location */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3375 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3376 trash.len += rule->rdr_len;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3377 break;
3378 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3379
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3380 if (rule->cookie_len) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3381 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3382 trash.len += 14;
3383 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3384 trash.len += rule->cookie_len;
3385 memcpy(trash.str + trash.len, "\r\n", 2);
3386 trash.len += 2;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3387 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3388
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3389 /* add end of headers and the keep-alive/close status.
3390 * We may choose to set keep-alive if the Location begins
3391 * with a slash, because the client will come back to the
3392 * same server.
3393 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3394 txn->status = rule->code;
3395 /* let's log the request time */
3396 s->logs.tv_request = now;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3397
3398 if (rule->rdr_len >= 1 && *rule->rdr_str == '/' &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3399 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3400 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3401 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3402 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3403 /* keep-alive possible */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3404 if (!(msg->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3405 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3406 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3407 trash.len += 30;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3408 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3409 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3410 trash.len += 24;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3411 }
Willy Tarreau75661452010-01-10 10:35:01 +0100[diff] [blame]3412 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3413 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3414 trash.len += 4;
3415 bo_inject(req->prod->ob, trash.str, trash.len);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3416 /* "eat" the request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3417 bi_fast_delete(req->buf, msg->sov);
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3418 msg->sov = 0;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3419 req->analysers = AN_REQ_HTTP_XFER_BODY;
Willy Tarreau9300fb22010-01-05 00:58:24 +0100[diff] [blame]3420 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3421 txn->req.msg_state = HTTP_MSG_CLOSED;
3422 txn->rsp.msg_state = HTTP_MSG_DONE;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3423 break;
3424 } else {
3425 /* keep-alive not possible */
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3426 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3427 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3428 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3429 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3430 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3431 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3432 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3433 stream_int_retnclose(req->prod, &trash);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3434 goto return_prx_cond;
3435 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3436 }
3437 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3438
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3439 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3440 * If this happens, then the data will not come immediately, so we must
3441 * send all what we have without waiting. Note that due to the small gain
3442 * 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]3443 * 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]3444 * itself once used.
3445 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3446 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3447
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3448 /* that's OK for us now, let's move on to next analysers */
3449 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3450
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3451 return_bad_req:
3452 /* We centralize bad requests processing here */
3453 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3454 /* we detected a parsing error. We want to archive this request
3455 * in the dedicated proxy area for later troubleshooting.
3456 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3457 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]3458 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3459
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3460 txn->req.msg_state = HTTP_MSG_ERROR;
3461 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3462 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3463
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3464 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3465 if (s->listener->counters)
3466 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3467
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3468 return_prx_cond:
3469 if (!(s->flags & SN_ERR_MASK))
3470 s->flags |= SN_ERR_PRXCOND;
3471 if (!(s->flags & SN_FINST_MASK))
3472 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3473
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3474 req->analysers = 0;
3475 req->analyse_exp = TICK_ETERNITY;
3476 return 0;
3477}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3478
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3479/* This function performs all the processing enabled for the current request.
3480 * It returns 1 if the processing can continue on next analysers, or zero if it
3481 * needs more data, encounters an error, or wants to immediately abort the
3482 * request. It relies on buffers flags, and updates s->req->analysers.
3483 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3484int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3485{
3486 struct http_txn *txn = &s->txn;
3487 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3488
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3489 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3490 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3491 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3492 return 0;
3493 }
3494
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3495 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]3496 now_ms, __FUNCTION__,
3497 s,
3498 req,
3499 req->rex, req->wex,
3500 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3501 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3502 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3503
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]3504 if (s->fe->comp || s->be->comp)
3505 select_compression_request_header(s, req->buf);
3506
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3507 /*
3508 * Right now, we know that we have processed the entire headers
3509 * and that unwanted requests have been filtered out. We can do
3510 * whatever we want with the remaining request. Also, now we
3511 * may have separate values for ->fe, ->be.
3512 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3513
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3514 /*
3515 * If HTTP PROXY is set we simply get remote server address
3516 * parsing incoming request.
3517 */
3518 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3519 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]3520 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3521
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3522 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3523 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3524 * Note that doing so might move headers in the request, but
3525 * the fields will stay coherent and the URI will not move.
3526 * This should only be performed in the backend.
3527 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3528 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3529 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3530 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3531
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3532 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3533 * 8: the appsession cookie was looked up very early in 1.2,
3534 * so let's do the same now.
3535 */
3536
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3537 /* It needs to look into the URI unless persistence must be ignored */
3538 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3539 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]3540 }
3541
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3542 /* add unique-id if "header-unique-id" is specified */
3543
3544 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
3545 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
3546
3547 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3548 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
3549 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3550 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3551 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len) < 0))
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3552 goto return_bad_req;
3553 }
3554
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3555 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3556 * 9: add X-Forwarded-For if either the frontend or the backend
3557 * asks for it.
3558 */
3559 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3560 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3561 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3562 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3563 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]3564 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3565 /* The header is set to be added only if none is present
3566 * and we found it, so don't do anything.
3567 */
3568 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3569 else if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3570 /* Add an X-Forwarded-For header unless the source IP is
3571 * in the 'except' network range.
3572 */
3573 if ((!s->fe->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3574 (((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr.s_addr & s->fe->except_mask.s_addr)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3575 != s->fe->except_net.s_addr) &&
3576 (!s->be->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3577 (((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]3578 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3579 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3580 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3581 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3582
3583 /* Note: we rely on the backend to get the header name to be used for
3584 * x-forwarded-for, because the header is really meant for the backends.
3585 * However, if the backend did not specify any option, we have to rely
3586 * on the frontend's header name.
3587 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3588 if (s->be->fwdfor_hdr_len) {
3589 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3590 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3591 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3592 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3593 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3594 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3595 len += sprintf(trash.str + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
Willy Tarreauedcf6682008-11-30 23:15:34 +0100[diff] [blame]3596
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3597 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, len) < 0))
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3598 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3599 }
3600 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3601 else if (s->req->prod->conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3602 /* FIXME: for the sake of completeness, we should also support
3603 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3604 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3605 int len;
3606 char pn[INET6_ADDRSTRLEN];
3607 inet_ntop(AF_INET6,
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3608 (const void *)&((struct sockaddr_in6 *)(&s->req->prod->conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3609 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3610
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3611 /* Note: we rely on the backend to get the header name to be used for
3612 * x-forwarded-for, because the header is really meant for the backends.
3613 * However, if the backend did not specify any option, we have to rely
3614 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3615 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3616 if (s->be->fwdfor_hdr_len) {
3617 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3618 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3619 } else {
3620 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3621 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3622 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3623 len += sprintf(trash.str + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3624
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3625 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, len) < 0))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3626 goto return_bad_req;
3627 }
3628 }
3629
3630 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3631 * 10: add X-Original-To if either the frontend or the backend
3632 * asks for it.
3633 */
3634 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3635
3636 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3637 if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3638 /* Add an X-Original-To header unless the destination IP is
3639 * in the 'except' network range.
3640 */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3641 conn_get_to_addr(s->req->prod->conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3642
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3643 if (s->req->prod->conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3644 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3645 (((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr.s_addr & s->fe->except_mask_to.s_addr)
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3646 != s->fe->except_to.s_addr) &&
3647 (!s->be->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3648 (((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]3649 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3650 int len;
3651 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3652 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3653
3654 /* Note: we rely on the backend to get the header name to be used for
3655 * x-original-to, because the header is really meant for the backends.
3656 * However, if the backend did not specify any option, we have to rely
3657 * on the frontend's header name.
3658 */
3659 if (s->be->orgto_hdr_len) {
3660 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3661 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3662 } else {
3663 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3664 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3665 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3666 len += sprintf(trash.str + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3667
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3668 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, len) < 0))
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3669 goto return_bad_req;
3670 }
3671 }
3672 }
3673
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]3674 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
3675 * If an "Upgrade" token is found, the header is left untouched in order not to have
3676 * to deal with some servers bugs : some of them fail an Upgrade if anything but
3677 * "Upgrade" is present in the Connection header.
3678 */
3679 if (!(txn->flags & TX_HDR_CONN_UPG) &&
3680 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
3681 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3682 unsigned int want_flags = 0;
3683
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3684 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3685 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
3686 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
3687 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3688 want_flags |= TX_CON_CLO_SET;
3689 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3690 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3691 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3692 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3693 want_flags |= TX_CON_KAL_SET;
3694 }
3695
3696 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3697 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3698 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3699
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3700
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3701 /* If we have no server assigned yet and we're balancing on url_param
3702 * with a POST request, we may be interested in checking the body for
3703 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3704 */
3705 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3706 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3707 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3708 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3709 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3710 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3711 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3712
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3713 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3714 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3715#ifdef TCP_QUICKACK
3716 /* We expect some data from the client. Unless we know for sure
3717 * we already have a full request, we have to re-enable quick-ack
3718 * in case we previously disabled it, otherwise we might cause
3719 * the client to delay further data.
3720 */
3721 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3722 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3723 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]3724 setsockopt(s->si[0].conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3725#endif
3726 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]3727
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3728 /*************************************************************
3729 * OK, that's finished for the headers. We have done what we *
3730 * could. Let's switch to the DATA state. *
3731 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3732 req->analyse_exp = TICK_ETERNITY;
3733 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3734
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3735 /* if the server closes the connection, we want to immediately react
3736 * and close the socket to save packets and syscalls.
3737 */
3738 req->cons->flags |= SI_FL_NOHALF;
3739
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3740 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3741 /* OK let's go on with the BODY now */
3742 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3743
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3744 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3745 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3746 /* we detected a parsing error. We want to archive this request
3747 * in the dedicated proxy area for later troubleshooting.
3748 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3749 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]3750 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3751
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3752 txn->req.msg_state = HTTP_MSG_ERROR;
3753 txn->status = 400;
3754 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3755 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3756
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3757 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3758 if (s->listener->counters)
3759 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3760
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3761 if (!(s->flags & SN_ERR_MASK))
3762 s->flags |= SN_ERR_PRXCOND;
3763 if (!(s->flags & SN_FINST_MASK))
3764 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3765 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3766}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3767
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3768/* This function is an analyser which processes the HTTP tarpit. It always
3769 * returns zero, at the beginning because it prevents any other processing
3770 * from occurring, and at the end because it terminates the request.
3771 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3772int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3773{
3774 struct http_txn *txn = &s->txn;
3775
3776 /* This connection is being tarpitted. The CLIENT side has
3777 * already set the connect expiration date to the right
3778 * timeout. We just have to check that the client is still
3779 * there and that the timeout has not expired.
3780 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3781 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3782 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3783 !tick_is_expired(req->analyse_exp, now_ms))
3784 return 0;
3785
3786 /* We will set the queue timer to the time spent, just for
3787 * logging purposes. We fake a 500 server error, so that the
3788 * attacker will not suspect his connection has been tarpitted.
3789 * It will not cause trouble to the logs because we can exclude
3790 * the tarpitted connections by filtering on the 'PT' status flags.
3791 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3792 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
3793
3794 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3795 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3796 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3797
3798 req->analysers = 0;
3799 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3800
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3801 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3802 if (s->listener->counters)
3803 s->listener->counters->failed_req++;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3804
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3805 if (!(s->flags & SN_ERR_MASK))
3806 s->flags |= SN_ERR_PRXCOND;
3807 if (!(s->flags & SN_FINST_MASK))
3808 s->flags |= SN_FINST_T;
3809 return 0;
3810}
3811
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3812/* This function is an analyser which processes the HTTP request body. It looks
3813 * for parameters to be used for the load balancing algorithm (url_param). It
3814 * must only be called after the standard HTTP request processing has occurred,
3815 * because it expects the request to be parsed. It returns zero if it needs to
3816 * read more data, or 1 once it has completed its analysis.
3817 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3818int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3819{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3820 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3821 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3822 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3823
3824 /* We have to parse the HTTP request body to find any required data.
3825 * "balance url_param check_post" should have been the only way to get
3826 * into this. We were brought here after HTTP header analysis, so all
3827 * related structures are ready.
3828 */
3829
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3830 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
3831 goto missing_data;
3832
3833 if (msg->msg_state < HTTP_MSG_100_SENT) {
3834 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3835 * send an HTTP/1.1 100 Continue intermediate response.
3836 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3837 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3838 struct hdr_ctx ctx;
3839 ctx.idx = 0;
3840 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3841 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3842 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3843 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3844 }
3845 }
3846 msg->msg_state = HTTP_MSG_100_SENT;
3847 }
3848
3849 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3850 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3851 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3852 * is still null. We must save the body in msg->next because it
3853 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3854 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]3855 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3856
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3857 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3858 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
3859 else
3860 msg->msg_state = HTTP_MSG_DATA;
3861 }
3862
3863 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3864 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3865 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3866 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3867 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]3868 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3869
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3870 if (!ret)
3871 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3872 else if (ret < 0) {
3873 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3874 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3875 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3876 }
3877
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3878 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3879 * We have the first data byte is in msg->sov. We're waiting for at
3880 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3881 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3882
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3883 if (msg->body_len < limit)
3884 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3885
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3886 if (req->buf->i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3887 goto http_end;
3888
3889 missing_data:
3890 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3891 if (buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3892 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3893 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3894 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3895
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3896 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3897 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3898 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3899
3900 if (!(s->flags & SN_ERR_MASK))
3901 s->flags |= SN_ERR_CLITO;
3902 if (!(s->flags & SN_FINST_MASK))
3903 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3904 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3905 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3906
3907 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3908 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]3909 /* Not enough data. We'll re-use the http-request
3910 * timeout here. Ideally, we should set the timeout
3911 * relative to the accept() date. We just set the
3912 * request timeout once at the beginning of the
3913 * request.
3914 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3915 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3916 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]3917 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3918 return 0;
3919 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3920
3921 http_end:
3922 /* The situation will not evolve, so let's give up on the analysis. */
3923 s->logs.tv_request = now; /* update the request timer to reflect full request */
3924 req->analysers &= ~an_bit;
3925 req->analyse_exp = TICK_ETERNITY;
3926 return 1;
3927
3928 return_bad_req: /* let's centralize all bad requests */
3929 txn->req.msg_state = HTTP_MSG_ERROR;
3930 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3931 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3932
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3933 if (!(s->flags & SN_ERR_MASK))
3934 s->flags |= SN_ERR_PRXCOND;
3935 if (!(s->flags & SN_FINST_MASK))
3936 s->flags |= SN_FINST_R;
3937
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3938 return_err_msg:
3939 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3940 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3941 if (s->listener->counters)
3942 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3943 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3944}
3945
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3946/* send a server's name with an outgoing request over an established connection.
3947 * Note: this function is designed to be called once the request has been scheduled
3948 * for being forwarded. This is the reason why it rewinds the buffer before
3949 * proceeding.
3950 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]3951int 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]3952
3953 struct hdr_ctx ctx;
3954
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3955 char *hdr_name = be->server_id_hdr_name;
3956 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]3957 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3958 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3959 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3960
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]3961 ctx.idx = 0;
3962
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3963 old_o = chn->buf->o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3964 if (old_o) {
3965 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3966 b_rew(chn->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3967 }
3968
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3969 old_i = chn->buf->i;
3970 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]3971 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3972 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3973 }
3974
3975 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3976 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3977 memcpy(hdr_val, hdr_name, hdr_name_len);
3978 hdr_val += hdr_name_len;
3979 *hdr_val++ = ':';
3980 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3981 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
3982 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, hdr_val - trash.str);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3983
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3984 if (old_o) {
3985 /* If this was a forwarded request, we must readjust the amount of
3986 * data to be forwarded in order to take into account the size
3987 * variations.
3988 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3989 b_adv(chn->buf, old_o + chn->buf->i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3990 }
3991
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3992 return 0;
3993}
3994
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3995/* Terminate current transaction and prepare a new one. This is very tricky
3996 * right now but it works.
3997 */
3998void http_end_txn_clean_session(struct session *s)
3999{
4000 /* FIXME: We need a more portable way of releasing a backend's and a
4001 * server's connections. We need a safer way to reinitialize buffer
4002 * flags. We also need a more accurate method for computing per-request
4003 * data.
4004 */
4005 http_silent_debug(__LINE__, s);
4006
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4007 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]4008 si_shutr(s->req->cons);
4009 si_shutw(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4010
4011 http_silent_debug(__LINE__, s);
4012
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4013 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4014 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4015 if (unlikely(s->srv_conn))
4016 sess_change_server(s, NULL);
4017 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4018
4019 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4020 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]4021 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4022
4023 if (s->txn.status) {
4024 int n;
4025
4026 n = s->txn.status / 100;
4027 if (n < 1 || n > 5)
4028 n = 0;
4029
4030 if (s->fe->mode == PR_MODE_HTTP)
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4031 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4032
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4033 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4034 (s->be->mode == PR_MODE_HTTP))
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4035 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4036 }
4037
4038 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4039 s->logs.bytes_in -= s->req->buf->i;
4040 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4041
4042 /* let's do a final log if we need it */
4043 if (s->logs.logwait &&
4044 !(s->flags & SN_MONITOR) &&
4045 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4046 s->do_log(s);
4047 }
4048
4049 s->logs.accept_date = date; /* user-visible date for logging */
4050 s->logs.tv_accept = now; /* corrected date for internal use */
4051 tv_zero(&s->logs.tv_request);
4052 s->logs.t_queue = -1;
4053 s->logs.t_connect = -1;
4054 s->logs.t_data = -1;
4055 s->logs.t_close = 0;
4056 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4057 s->logs.srv_queue_size = 0; /* we will get this number soon */
4058
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4059 s->logs.bytes_in = s->req->total = s->req->buf->i;
4060 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4061
4062 if (s->pend_pos)
4063 pendconn_free(s->pend_pos);
4064
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4065 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4066 if (s->flags & SN_CURR_SESS) {
4067 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4068 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4069 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4070 if (may_dequeue_tasks(objt_server(s->target), s->be))
4071 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4072 }
4073
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4074 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4075
4076 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]4077 s->req->cons->conn->t.sock.fd = -1; /* just to help with debugging */
4078 s->req->cons->conn->flags = CO_FL_NONE;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4079 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4080 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4081 s->req->cons->err_loc = NULL;
4082 s->req->cons->exp = TICK_ETERNITY;
4083 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4084 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4085 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]4086 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]4087 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4088
4089 if (s->flags & SN_COMP_READY)
4090 s->comp_algo->end(&s->comp_ctx);
4091 s->comp_algo = NULL;
4092 s->flags &= ~SN_COMP_READY;
4093
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4094 s->txn.meth = 0;
4095 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4096 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4097 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4098 s->req->cons->flags |= SI_FL_INDEP_STR;
4099
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4100 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4101 s->req->flags |= CF_NEVER_WAIT;
4102 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4103 }
4104
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4105 /* if the request buffer is not empty, it means we're
4106 * about to process another request, so send pending
4107 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4108 * Just don't do this if the buffer is close to be full,
4109 * because the request will wait for it to flush a little
4110 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4111 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4112 if (s->req->buf->i) {
4113 if (s->rep->buf->o &&
4114 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4115 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]4116 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4117 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4118
4119 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4120 channel_auto_read(s->req);
4121 channel_auto_close(s->req);
4122 channel_auto_read(s->rep);
4123 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4124
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4125 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4126 s->rep->analysers = 0;
4127
4128 http_silent_debug(__LINE__, s);
4129}
4130
4131
4132/* This function updates the request state machine according to the response
4133 * state machine and buffer flags. It returns 1 if it changes anything (flag
4134 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4135 * it is only used to find when a request/response couple is complete. Both
4136 * this function and its equivalent should loop until both return zero. It
4137 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4138 */
4139int http_sync_req_state(struct session *s)
4140{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4141 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4142 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4143 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4144 unsigned int old_state = txn->req.msg_state;
4145
4146 http_silent_debug(__LINE__, s);
4147 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4148 return 0;
4149
4150 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4151 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4152 * We can shut the read side unless we want to abort_on_close,
4153 * or we have a POST request. The issue with POST requests is
4154 * that some browsers still send a CRLF after the request, and
4155 * this CRLF must be read so that it does not remain in the kernel
4156 * buffers, otherwise a close could cause an RST on some systems
4157 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4158 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4159 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4160 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4161
4162 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4163 goto wait_other_side;
4164
4165 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4166 /* The server has not finished to respond, so we
4167 * don't want to move in order not to upset it.
4168 */
4169 goto wait_other_side;
4170 }
4171
4172 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4173 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4174 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +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 goto wait_other_side;
4178 }
4179
4180 /* When we get here, it means that both the request and the
4181 * response have finished receiving. Depending on the connection
4182 * mode, we'll have to wait for the last bytes to leave in either
4183 * direction, and sometimes for a close to be effective.
4184 */
4185
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4186 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4187 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4188 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4189 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4190 }
4191 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4192 /* Option forceclose is set, or either side wants to close,
4193 * let's enforce it now that we're not expecting any new
4194 * data to come. The caller knows the session is complete
4195 * once both states are CLOSED.
4196 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4197 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4198 channel_shutr_now(chn);
4199 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4200 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4201 }
4202 else {
4203 /* The last possible modes are keep-alive and tunnel. Since tunnel
4204 * mode does not set the body analyser, we can't reach this place
4205 * in tunnel mode, so we're left with keep-alive only.
4206 * This mode is currently not implemented, we switch to tunnel mode.
4207 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4208 channel_auto_read(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4209 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4210 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4211 }
4212
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4213 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4214 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4215 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4216
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4217 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4218 txn->req.msg_state = HTTP_MSG_CLOSING;
4219 goto http_msg_closing;
4220 }
4221 else {
4222 txn->req.msg_state = HTTP_MSG_CLOSED;
4223 goto http_msg_closed;
4224 }
4225 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4226 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4227 }
4228
4229 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4230 http_msg_closing:
4231 /* nothing else to forward, just waiting for the output buffer
4232 * to be empty and for the shutw_now to take effect.
4233 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4234 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4235 txn->req.msg_state = HTTP_MSG_CLOSED;
4236 goto http_msg_closed;
4237 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4238 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4239 txn->req.msg_state = HTTP_MSG_ERROR;
4240 goto wait_other_side;
4241 }
4242 }
4243
4244 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4245 http_msg_closed:
4246 goto wait_other_side;
4247 }
4248
4249 wait_other_side:
4250 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4251 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4252}
4253
4254
4255/* This function updates the response state machine according to the request
4256 * state machine and buffer flags. It returns 1 if it changes anything (flag
4257 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4258 * it is only used to find when a request/response couple is complete. Both
4259 * this function and its equivalent should loop until both return zero. It
4260 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4261 */
4262int http_sync_res_state(struct session *s)
4263{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4264 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4265 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4266 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4267 unsigned int old_state = txn->rsp.msg_state;
4268
4269 http_silent_debug(__LINE__, s);
4270 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4271 return 0;
4272
4273 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4274 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4275 * still monitor the server connection for a possible close
4276 * while the request is being uploaded, so we don't disable
4277 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4278 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4279 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4280
4281 if (txn->req.msg_state == HTTP_MSG_ERROR)
4282 goto wait_other_side;
4283
4284 if (txn->req.msg_state < HTTP_MSG_DONE) {
4285 /* The client seems to still be sending data, probably
4286 * because we got an error response during an upload.
4287 * We have the choice of either breaking the connection
4288 * or letting it pass through. Let's do the later.
4289 */
4290 goto wait_other_side;
4291 }
4292
4293 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4294 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4295 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4296 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4297 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4298 goto wait_other_side;
4299 }
4300
4301 /* When we get here, it means that both the request and the
4302 * response have finished receiving. Depending on the connection
4303 * mode, we'll have to wait for the last bytes to leave in either
4304 * direction, and sometimes for a close to be effective.
4305 */
4306
4307 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4308 /* Server-close mode : shut read and wait for the request
4309 * side to close its output buffer. The caller will detect
4310 * when we're in DONE and the other is in CLOSED and will
4311 * catch that for the final cleanup.
4312 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4313 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4314 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4315 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4316 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4317 /* Option forceclose is set, or either side wants to close,
4318 * let's enforce it now that we're not expecting any new
4319 * data to come. The caller knows the session is complete
4320 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4321 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4322 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4323 channel_shutr_now(chn);
4324 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4325 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4326 }
4327 else {
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4328 /* The last possible modes are keep-alive and tunnel. Since tunnel
4329 * mode does not set the body analyser, we can't reach this place
4330 * in tunnel mode, so we're left with keep-alive only.
4331 * This mode is currently not implemented, we switch to tunnel mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4332 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4333 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4334 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4335 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4336 }
4337
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4338 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4339 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4340 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4341 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4342 goto http_msg_closing;
4343 }
4344 else {
4345 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4346 goto http_msg_closed;
4347 }
4348 }
4349 goto wait_other_side;
4350 }
4351
4352 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4353 http_msg_closing:
4354 /* nothing else to forward, just waiting for the output buffer
4355 * to be empty and for the shutw_now to take effect.
4356 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4357 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4358 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4359 goto http_msg_closed;
4360 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4361 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4362 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4363 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4364 if (objt_server(s->target))
4365 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4366 goto wait_other_side;
4367 }
4368 }
4369
4370 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4371 http_msg_closed:
4372 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4373 bi_erase(chn);
4374 channel_auto_close(chn);
4375 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4376 goto wait_other_side;
4377 }
4378
4379 wait_other_side:
4380 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4381 /* We force the response to leave immediately if we're waiting for the
4382 * other side, since there is no pending shutdown to push it out.
4383 */
4384 if (!channel_is_empty(chn))
4385 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4386 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4387}
4388
4389
4390/* Resync the request and response state machines. Return 1 if either state
4391 * changes.
4392 */
4393int http_resync_states(struct session *s)
4394{
4395 struct http_txn *txn = &s->txn;
4396 int old_req_state = txn->req.msg_state;
4397 int old_res_state = txn->rsp.msg_state;
4398
4399 http_silent_debug(__LINE__, s);
4400 http_sync_req_state(s);
4401 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4402 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4403 if (!http_sync_res_state(s))
4404 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4405 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4406 if (!http_sync_req_state(s))
4407 break;
4408 }
4409 http_silent_debug(__LINE__, s);
4410 /* OK, both state machines agree on a compatible state.
4411 * There are a few cases we're interested in :
4412 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4413 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4414 * directions, so let's simply disable both analysers.
4415 * - HTTP_MSG_CLOSED on the response only means we must abort the
4416 * request.
4417 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4418 * with server-close mode means we've completed one request and we
4419 * must re-initialize the server connection.
4420 */
4421
4422 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4423 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4424 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4425 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4426 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4427 channel_auto_close(s->req);
4428 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4429 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4430 channel_auto_close(s->rep);
4431 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4432 }
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4433 else if (txn->rsp.msg_state == HTTP_MSG_CLOSED ||
4434 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4435 txn->req.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4436 (s->rep->flags & CF_SHUTW)) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4437 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4438 channel_auto_close(s->rep);
4439 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4440 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4441 channel_abort(s->req);
4442 channel_auto_close(s->req);
4443 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4444 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4445 }
4446 else if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4447 txn->rsp.msg_state == HTTP_MSG_DONE &&
4448 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)) {
4449 /* server-close: terminate this server connection and
4450 * reinitialize a fresh-new transaction.
4451 */
4452 http_end_txn_clean_session(s);
4453 }
4454
4455 http_silent_debug(__LINE__, s);
4456 return txn->req.msg_state != old_req_state ||
4457 txn->rsp.msg_state != old_res_state;
4458}
4459
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4460/* This function is an analyser which forwards request body (including chunk
4461 * sizes if any). It is called as soon as we must forward, even if we forward
4462 * zero byte. The only situation where it must not be called is when we're in
4463 * tunnel mode and we want to forward till the close. It's used both to forward
4464 * remaining data and to resync after end of body. It expects the msg_state to
4465 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4466 * 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]4467 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4468 * bytes of pending data + the headers if not already done (between sol and sov).
4469 * 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]4470 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4471int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4472{
4473 struct http_txn *txn = &s->txn;
4474 struct http_msg *msg = &s->txn.req;
4475
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4476 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4477 return 0;
4478
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4479 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]4480 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4481 /* Output closed while we were sending data. We must abort and
4482 * wake the other side up.
4483 */
4484 msg->msg_state = HTTP_MSG_ERROR;
4485 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4486 return 1;
4487 }
4488
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4489 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4490 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4491
4492 /* Note that we don't have to send 100-continue back because we don't
4493 * need the data to complete our job, and it's up to the server to
4494 * decide whether to return 100, 417 or anything else in return of
4495 * an "Expect: 100-continue" header.
4496 */
4497
4498 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4499 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4500 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4501 * is still null. We must save the body in msg->next because it
4502 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4503 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4504 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4505
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4506 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4507 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4508 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4509 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4510 }
4511
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4512 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4513 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4514
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4515 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4516 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4517 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4518 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4519 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4520 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4521 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4522 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4523 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4524
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4525 if (msg->msg_state == HTTP_MSG_DATA) {
4526 /* must still forward */
4527 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4528 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4529
4530 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4531 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4532 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4533 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4534 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4535 }
4536 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4537 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4538 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4539 * TRAILERS state.
4540 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4541 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4542
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4543 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4544 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4545 else if (ret < 0) {
4546 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4547 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4548 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]4549 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4550 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4551 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4552 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4553 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4554 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4555 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4556
4557 if (ret == 0)
4558 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4559 else if (ret < 0) {
4560 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4561 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4562 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]4563 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4564 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4565 /* we're in MSG_CHUNK_SIZE now */
4566 }
4567 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4568 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4569
4570 if (ret == 0)
4571 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4572 else if (ret < 0) {
4573 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4574 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4575 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]4576 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4577 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4578 /* we're in HTTP_MSG_DONE now */
4579 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4580 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4581 int old_state = msg->msg_state;
4582
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4583 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4584 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4585 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4586 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4587 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4588 if (http_resync_states(s)) {
4589 /* some state changes occurred, maybe the analyser
4590 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4591 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4592 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4593 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4594 /* request errors are most likely due to
4595 * the server aborting the transfer.
4596 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4597 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4598 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4599 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4600 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4601 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4602 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4603 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4604 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4605
4606 /* If "option abortonclose" is set on the backend, we
4607 * want to monitor the client's connection and forward
4608 * any shutdown notification to the server, which will
4609 * decide whether to close or to go on processing the
4610 * request.
4611 */
4612 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4613 channel_auto_read(req);
4614 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4615 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4616 else if (s->txn.meth == HTTP_METH_POST) {
4617 /* POST requests may require to read extra CRLF
4618 * sent by broken browsers and which could cause
4619 * an RST to be sent upon close on some systems
4620 * (eg: Linux).
4621 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4622 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4623 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4624
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4625 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4626 }
4627 }
4628
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4629 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4630 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4631 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4632 if (!(s->flags & SN_ERR_MASK))
4633 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4634 if (!(s->flags & SN_FINST_MASK)) {
4635 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4636 s->flags |= SN_FINST_H;
4637 else
4638 s->flags |= SN_FINST_D;
4639 }
4640
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4641 s->fe->fe_counters.cli_aborts++;
4642 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4643 if (objt_server(s->target))
4644 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4645
4646 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4647 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4648
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4649 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4650 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4651 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4652
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4653 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4654 * 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]4655 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4656 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4657 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4658
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4659 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4660 * 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]4661 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4662 * modes are already handled by the stream sock layer. We must not do
4663 * this in content-length mode because it could present the MSG_MORE
4664 * flag with the last block of forwarded data, which would cause an
4665 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4666 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4667 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4668 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4669
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4670 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4671 return 0;
4672
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4673 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4674 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4675 if (s->listener->counters)
4676 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4677 return_bad_req_stats_ok:
4678 txn->req.msg_state = HTTP_MSG_ERROR;
4679 if (txn->status) {
4680 /* Note: we don't send any error if some data were already sent */
4681 stream_int_retnclose(req->prod, NULL);
4682 } else {
4683 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4684 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4685 }
4686 req->analysers = 0;
4687 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]4688
4689 if (!(s->flags & SN_ERR_MASK))
4690 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4691 if (!(s->flags & SN_FINST_MASK)) {
4692 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4693 s->flags |= SN_FINST_H;
4694 else
4695 s->flags |= SN_FINST_D;
4696 }
4697 return 0;
4698
4699 aborted_xfer:
4700 txn->req.msg_state = HTTP_MSG_ERROR;
4701 if (txn->status) {
4702 /* Note: we don't send any error if some data were already sent */
4703 stream_int_retnclose(req->prod, NULL);
4704 } else {
4705 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4706 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4707 }
4708 req->analysers = 0;
4709 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
4710
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4711 s->fe->fe_counters.srv_aborts++;
4712 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4713 if (objt_server(s->target))
4714 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4715
4716 if (!(s->flags & SN_ERR_MASK))
4717 s->flags |= SN_ERR_SRVCL;
4718 if (!(s->flags & SN_FINST_MASK)) {
4719 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4720 s->flags |= SN_FINST_H;
4721 else
4722 s->flags |= SN_FINST_D;
4723 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4724 return 0;
4725}
4726
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4727/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4728 * processing can continue on next analysers, or zero if it either needs more
4729 * data or wants to immediately abort the response (eg: timeout, error, ...). It
4730 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
4731 * when it has nothing left to do, and may remove any analyser when it wants to
4732 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4733 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4734int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4735{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4736 struct http_txn *txn = &s->txn;
4737 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4738 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4739 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4740 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4741 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4742
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4743 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]4744 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4745 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4746 rep,
4747 rep->rex, rep->wex,
4748 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4749 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4750 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]4751
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4752 /*
4753 * Now parse the partial (or complete) lines.
4754 * We will check the response syntax, and also join multi-line
4755 * headers. An index of all the lines will be elaborated while
4756 * parsing.
4757 *
4758 * For the parsing, we use a 28 states FSM.
4759 *
4760 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4761 * rep->buf->p = beginning of response
4762 * rep->buf->p + msg->eoh = end of processed headers / start of current one
4763 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4764 * msg->eol = end of current header or line (LF or CRLF)
4765 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4766 */
4767
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4768 /* There's a protected area at the end of the buffer for rewriting
4769 * purposes. We don't want to start to parse the request if the
4770 * protected area is affected, because we may have to move processed
4771 * data later, which is much more complicated.
4772 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4773 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]4774 if (unlikely(channel_full(rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4775 bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
4776 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite)) {
4777 if (rep->buf->o) {
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4778 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4779 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4780 goto abort_response;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4781 channel_dont_close(rep);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4782 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4783 return 0;
4784 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4785 if (rep->buf->i <= rep->buf->size - global.tune.maxrewrite)
4786 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4787 }
4788
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4789 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]4790 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4791 }
4792
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4793 /* 1: we might have to print this header in debug mode */
4794 if (unlikely((global.mode & MODE_DEBUG) &&
4795 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4796 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4797 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4798
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4799 sol = rep->buf->p;
4800 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4801 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4802
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4803 sol += hdr_idx_first_pos(&txn->hdr_idx);
4804 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4805
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4806 while (cur_idx) {
4807 eol = sol + txn->hdr_idx.v[cur_idx].len;
4808 debug_hdr("srvhdr", s, sol, eol);
4809 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
4810 cur_idx = txn->hdr_idx.v[cur_idx].next;
4811 }
4812 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4813
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4814 /*
4815 * Now we quickly check if we have found a full valid response.
4816 * If not so, we check the FD and buffer states before leaving.
4817 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4818 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4819 * responses are checked first.
4820 *
4821 * Depending on whether the client is still there or not, we
4822 * may send an error response back or not. Note that normally
4823 * we should only check for HTTP status there, and check I/O
4824 * errors somewhere else.
4825 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4826
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4827 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4828 /* Invalid response */
4829 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
4830 /* we detected a parsing error. We want to archive this response
4831 * in the dedicated proxy area for later troubleshooting.
4832 */
4833 hdr_response_bad:
4834 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4835 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]4836
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4837 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4838 if (objt_server(s->target)) {
4839 objt_server(s->target)->counters.failed_resp++;
4840 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4841 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4842 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4843 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4844 rep->analysers = 0;
4845 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4846 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4847 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4848 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4849
4850 if (!(s->flags & SN_ERR_MASK))
4851 s->flags |= SN_ERR_PRXCOND;
4852 if (!(s->flags & SN_FINST_MASK))
4853 s->flags |= SN_FINST_H;
4854
4855 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4856 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4857
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4858 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4859 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]4860 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4861 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4862 goto hdr_response_bad;
4863 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4864
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4865 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4866 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4867 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4868 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]4869
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4870 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4871 if (objt_server(s->target)) {
4872 objt_server(s->target)->counters.failed_resp++;
4873 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4874 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]4875
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4876 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4877 rep->analysers = 0;
4878 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4879 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4880 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4881 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]4882
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4883 if (!(s->flags & SN_ERR_MASK))
4884 s->flags |= SN_ERR_SRVCL;
4885 if (!(s->flags & SN_FINST_MASK))
4886 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]4887 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4888 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4889
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4890 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4891 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4892 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4893 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]4894
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4895 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4896 if (objt_server(s->target)) {
4897 objt_server(s->target)->counters.failed_resp++;
4898 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4899 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4900
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4901 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4902 rep->analysers = 0;
4903 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4904 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4905 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4906 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4907
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4908 if (!(s->flags & SN_ERR_MASK))
4909 s->flags |= SN_ERR_SRVTO;
4910 if (!(s->flags & SN_FINST_MASK))
4911 s->flags |= SN_FINST_H;
4912 return 0;
4913 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]4914
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4915 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4916 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4917 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4918 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]4919
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4920 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4921 if (objt_server(s->target)) {
4922 objt_server(s->target)->counters.failed_resp++;
4923 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4924 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4925
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4926 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4927 rep->analysers = 0;
4928 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4929 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4930 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4931 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4932
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4933 if (!(s->flags & SN_ERR_MASK))
4934 s->flags |= SN_ERR_SRVCL;
4935 if (!(s->flags & SN_FINST_MASK))
4936 s->flags |= SN_FINST_H;
4937 return 0;
4938 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4939
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4940 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4941 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4942 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4943 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]4944
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4945 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4946 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4947 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4948
4949 if (!(s->flags & SN_ERR_MASK))
4950 s->flags |= SN_ERR_CLICL;
4951 if (!(s->flags & SN_FINST_MASK))
4952 s->flags |= SN_FINST_H;
4953
4954 /* process_session() will take care of the error */
4955 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4956 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4957
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4958 channel_dont_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4959 return 0;
4960 }
4961
4962 /* More interesting part now : we know that we have a complete
4963 * response which at least looks like HTTP. We have an indicator
4964 * of each header's length, so we can parse them quickly.
4965 */
4966
4967 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4968 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]4969
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4970 /*
4971 * 1: get the status code
4972 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4973 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4974 if (n < 1 || n > 5)
4975 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4976 /* when the client triggers a 4xx from the server, it's most often due
4977 * to a missing object or permission. These events should be tracked
4978 * because if they happen often, it may indicate a brute force or a
4979 * vulnerability scan.
4980 */
4981 if (n == 4)
4982 session_inc_http_err_ctr(s);
4983
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4984 if (objt_server(s->target))
4985 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4986
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4987 /* check if the response is HTTP/1.1 or above */
4988 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4989 ((rep->buf->p[5] > '1') ||
4990 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4991 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4992
4993 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4994 txn->flags &= ~(TX_HDR_CONN_PRS|TX_HDR_CONN_CLO|TX_HDR_CONN_KAL|TX_HDR_CONN_UPG|TX_CON_CLO_SET|TX_CON_KAL_SET);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4995
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4996 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4997 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4998
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4999 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]5000
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5001 /* Adjust server's health based on status code. Note: status codes 501
5002 * and 505 are triggered on demand by client request, so we must not
5003 * count them as server failures.
5004 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5005 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5006 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5007 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5008 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5009 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5010 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5011
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5012 /*
5013 * 2: check for cacheability.
5014 */
5015
5016 switch (txn->status) {
5017 case 200:
5018 case 203:
5019 case 206:
5020 case 300:
5021 case 301:
5022 case 410:
5023 /* RFC2616 @13.4:
5024 * "A response received with a status code of
5025 * 200, 203, 206, 300, 301 or 410 MAY be stored
5026 * by a cache (...) unless a cache-control
5027 * directive prohibits caching."
5028 *
5029 * RFC2616 @9.5: POST method :
5030 * "Responses to this method are not cacheable,
5031 * unless the response includes appropriate
5032 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5033 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5034 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5035 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5036 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5037 break;
5038 default:
5039 break;
5040 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5041
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5042 /*
5043 * 3: we may need to capture headers
5044 */
5045 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5046 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5047 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5048 txn->rsp.cap, s->fe->rsp_cap);
5049
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5050 /* 4: determine the transfer-length.
5051 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5052 * the presence of a message-body in a RESPONSE and its transfer length
5053 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5054 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5055 * All responses to the HEAD request method MUST NOT include a
5056 * message-body, even though the presence of entity-header fields
5057 * might lead one to believe they do. All 1xx (informational), 204
5058 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5059 * message-body. All other responses do include a message-body,
5060 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5061 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5062 * 1. Any response which "MUST NOT" include a message-body (such as the
5063 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5064 * always terminated by the first empty line after the header fields,
5065 * regardless of the entity-header fields present in the message.
5066 *
5067 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5068 * the "chunked" transfer-coding (Section 6.2) is used, the
5069 * transfer-length is defined by the use of this transfer-coding.
5070 * If a Transfer-Encoding header field is present and the "chunked"
5071 * transfer-coding is not present, the transfer-length is defined by
5072 * the sender closing the connection.
5073 *
5074 * 3. If a Content-Length header field is present, its decimal value in
5075 * OCTETs represents both the entity-length and the transfer-length.
5076 * If a message is received with both a Transfer-Encoding header
5077 * field and a Content-Length header field, the latter MUST be ignored.
5078 *
5079 * 4. If the message uses the media type "multipart/byteranges", and
5080 * the transfer-length is not otherwise specified, then this self-
5081 * delimiting media type defines the transfer-length. This media
5082 * type MUST NOT be used unless the sender knows that the recipient
5083 * can parse it; the presence in a request of a Range header with
5084 * multiple byte-range specifiers from a 1.1 client implies that the
5085 * client can parse multipart/byteranges responses.
5086 *
5087 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5088 */
5089
5090 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5091 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5092 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5093 * FIXME: should we parse anyway and return an error on chunked encoding ?
5094 */
5095 if (txn->meth == HTTP_METH_HEAD ||
5096 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5097 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5098 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5099 goto skip_content_length;
5100 }
5101
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5102 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5103 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5104 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5105 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5106 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5107 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5108 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5109 /* bad transfer-encoding (chunked followed by something else) */
5110 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5111 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5112 break;
5113 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5114 }
5115
5116 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5117 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5118 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5119 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5120 signed long long cl;
5121
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5122 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5123 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5124 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5125 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5126
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5127 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5128 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5129 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5130 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5131
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5132 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5133 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5134 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5135 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5136
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5137 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5138 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5139 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5140 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5141
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5142 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5143 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5144 }
5145
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5146 if (s->fe->comp || s->be->comp)
5147 select_compression_response_header(s, rep->buf);
5148
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5149 /* FIXME: we should also implement the multipart/byterange method.
5150 * For now on, we resort to close mode in this case (unknown length).
5151 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5152skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5153
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5154 /* end of job, return OK */
5155 rep->analysers &= ~an_bit;
5156 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5157 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5158 return 1;
5159}
5160
5161/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5162 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5163 * and updates t->rep->analysers. It might make sense to explode it into several
5164 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5165 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5166int 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]5167{
5168 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5169 struct http_msg *msg = &txn->rsp;
5170 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5171 struct cond_wordlist *wl;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5172
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5173 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]5174 now_ms, __FUNCTION__,
5175 t,
5176 rep,
5177 rep->rex, rep->wex,
5178 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5179 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5180 rep->analysers);
5181
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5182 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5183 return 0;
5184
5185 rep->analysers &= ~an_bit;
5186 rep->analyse_exp = TICK_ETERNITY;
5187
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5188 /* Now we have to check if we need to modify the Connection header.
5189 * This is more difficult on the response than it is on the request,
5190 * because we can have two different HTTP versions and we don't know
5191 * how the client will interprete a response. For instance, let's say
5192 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5193 * HTTP/1.1 response without any header. Maybe it will bound itself to
5194 * HTTP/1.0 because it only knows about it, and will consider the lack
5195 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5196 * the lack of header as a keep-alive. Thus we will use two flags
5197 * indicating how a request MAY be understood by the client. In case
5198 * of multiple possibilities, we'll fix the header to be explicit. If
5199 * ambiguous cases such as both close and keepalive are seen, then we
5200 * will fall back to explicit close. Note that we won't take risks with
5201 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5202 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5203 */
5204
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5205 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5206 txn->status == 101)) {
5207 /* Either we've established an explicit tunnel, or we're
5208 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5209 * to understand the next protocols. We have to switch to tunnel
5210 * mode, so that we transfer the request and responses then let
5211 * this protocol pass unmodified. When we later implement specific
5212 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5213 * header which contains information about that protocol for
5214 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5215 */
5216 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5217 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5218 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5219 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5220 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5221 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5222
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5223 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5224 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5225 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5226 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5227
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5228 /* now adjust header transformations depending on current state */
5229 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5230 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5231 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5232 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5233 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5234 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5235 else { /* SCL / KAL */
5236 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5237 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5238 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5239 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5240
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5241 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5242 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5243
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5244 /* Some keep-alive responses are converted to Server-close if
5245 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5246 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5247 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5248 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5249 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5250 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5251 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5252 }
5253
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5254 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5255 /*
5256 * 3: we will have to evaluate the filters.
5257 * As opposed to version 1.2, now they will be evaluated in the
5258 * filters order and not in the header order. This means that
5259 * each filter has to be validated among all headers.
5260 *
5261 * Filters are tried with ->be first, then with ->fe if it is
5262 * different from ->be.
5263 */
5264
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5265 cur_proxy = t->be;
5266 while (1) {
5267 struct proxy *rule_set = cur_proxy;
5268
5269 /* try headers filters */
5270 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5271 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5272 return_bad_resp:
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5273 if (objt_server(t->target)) {
5274 objt_server(t->target)->counters.failed_resp++;
5275 health_adjust(objt_server(t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5276 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5277 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5278 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5279 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5280 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5281 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5282 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5283 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5284 if (!(t->flags & SN_ERR_MASK))
5285 t->flags |= SN_ERR_PRXCOND;
5286 if (!(t->flags & SN_FINST_MASK))
5287 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5288 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5289 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5290 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5291
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5292 /* has the response been denied ? */
5293 if (txn->flags & TX_SVDENY) {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5294 if (objt_server(t->target))
5295 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5296
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5297 t->be->be_counters.denied_resp++;
5298 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5299 if (t->listener->counters)
5300 t->listener->counters->denied_resp++;
5301
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5302 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5303 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5304
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5305 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5306 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5307 if (txn->status < 200)
5308 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5309 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5310 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]5311 ret = acl_pass(ret);
5312 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5313 ret = !ret;
5314 if (!ret)
5315 continue;
5316 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5317 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5318 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5319 }
5320
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5321 /* check whether we're already working on the frontend */
5322 if (cur_proxy == t->fe)
5323 break;
5324 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5325 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5326
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5327 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5328 * We may be facing a 100-continue response, in which case this
5329 * is not the right response, and we're waiting for the next one.
5330 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5331 * next one.
5332 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5333 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5334 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5335 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5336 msg->msg_state = HTTP_MSG_RPBEFORE;
5337 txn->status = 0;
5338 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5339 return 1;
5340 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5341 else if (unlikely(txn->status < 200))
5342 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5343
5344 /* we don't have any 1xx status code now */
5345
5346 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5347 * 4: check for server cookie.
5348 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5349 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5350 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5351 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5352
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5353
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5354 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5355 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5356 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5357 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]5358 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5359
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5360 /*
5361 * 6: add server cookie in the response if needed
5362 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5363 if (objt_server(t->target) && (t->be->ck_opts & PR_CK_INS) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5364 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5365 (!(t->flags & SN_DIRECT) ||
5366 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5367 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5368 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5369 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5370 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5371 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5372 /* the server is known, it's not the one the client requested, or the
5373 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5374 * insert a set-cookie here, except if we want to insert only on POST
5375 * requests and this one isn't. Note that servers which don't have cookies
5376 * (eg: some backup servers) will return a full cookie removal request.
5377 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5378 if (!objt_server(t->target)->cookie) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5379 chunk_printf(&trash,
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5380 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5381 t->be->cookie_name);
5382 }
5383 else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5384 chunk_printf(&trash, "Set-Cookie: %s=%s", t->be->cookie_name, objt_server(t->target)->cookie);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5385
5386 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5387 /* emit last_date, which is mandatory */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5388 trash.str[trash.len++] = COOKIE_DELIM_DATE;
5389 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
5390 trash.len += 5;
5391
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5392 if (t->be->cookie_maxlife) {
5393 /* emit first_date, which is either the original one or
5394 * the current date.
5395 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5396 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5397 s30tob64(txn->cookie_first_date ?
5398 txn->cookie_first_date >> 2 :
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5399 (date.tv_sec+3) >> 2, trash.str + trash.len);
5400 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5401 }
5402 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5403 chunk_appendf(&trash, "; path=/");
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5404 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5405
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5406 if (t->be->cookie_domain)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5407 chunk_appendf(&trash, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5408
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5409 if (t->be->ck_opts & PR_CK_HTTPONLY)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5410 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5411
5412 if (t->be->ck_opts & PR_CK_SECURE)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5413 chunk_appendf(&trash, "; Secure");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5414
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5415 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5416 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5417
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5418 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5419 if (objt_server(t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5420 /* the server did not change, only the date was updated */
5421 txn->flags |= TX_SCK_UPDATED;
5422 else
5423 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5424
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5425 /* Here, we will tell an eventual cache on the client side that we don't
5426 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5427 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5428 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5429 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5430 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5431
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5432 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5433
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5434 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5435 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5436 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5437 }
5438 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5439
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5440 /*
5441 * 7: check if result will be cacheable with a cookie.
5442 * We'll block the response if security checks have caught
5443 * nasty things such as a cacheable cookie.
5444 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5445 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5446 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5447 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5448
5449 /* we're in presence of a cacheable response containing
5450 * a set-cookie header. We'll block it as requested by
5451 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5452 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5453 if (objt_server(t->target))
5454 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5455
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5456 t->be->be_counters.denied_resp++;
5457 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5458 if (t->listener->counters)
5459 t->listener->counters->denied_resp++;
5460
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5461 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5462 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5463 send_log(t->be, LOG_ALERT,
5464 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5465 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5466 goto return_srv_prx_502;
5467 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5468
5469 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5470 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5471 * If an "Upgrade" token is found, the header is left untouched in order
5472 * not to have to deal with some client bugs : some of them fail an upgrade
5473 * if anything but "Upgrade" is present in the Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5474 */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5475 if (!(txn->flags & TX_HDR_CONN_UPG) &&
5476 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5477 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5478 unsigned int want_flags = 0;
5479
5480 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5481 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5482 /* we want a keep-alive response here. Keep-alive header
5483 * required if either side is not 1.1.
5484 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5485 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5486 want_flags |= TX_CON_KAL_SET;
5487 }
5488 else {
5489 /* we want a close response here. Close header required if
5490 * the server is 1.1, regardless of the client.
5491 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5492 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5493 want_flags |= TX_CON_CLO_SET;
5494 }
5495
5496 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5497 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5498 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5499
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5500 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5501 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5502 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5503 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5504
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5505 /*************************************************************
5506 * OK, that's finished for the headers. We have done what we *
5507 * could. Let's switch to the DATA state. *
5508 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5509
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5510 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5511
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5512 /* if the user wants to log as soon as possible, without counting
5513 * bytes from the server, then this is the right moment. We have
5514 * to temporarily assign bytes_out to log what we currently have.
5515 */
5516 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
5517 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5518 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5519 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5520 t->logs.bytes_out = 0;
5521 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5522
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5523 /* Note: we must not try to cheat by jumping directly to DATA,
5524 * otherwise we would not let the client side wake up.
5525 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5526
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5527 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5528 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5529 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5530}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5531
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5532/* This function is an analyser which forwards response body (including chunk
5533 * sizes if any). It is called as soon as we must forward, even if we forward
5534 * zero byte. The only situation where it must not be called is when we're in
5535 * tunnel mode and we want to forward till the close. It's used both to forward
5536 * remaining data and to resync after end of body. It expects the msg_state to
5537 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5538 * 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]5539 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5540 * bytes of pending data + the headers if not already done (between sol and sov).
5541 * 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]5542 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5543int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5544{
5545 struct http_txn *txn = &s->txn;
5546 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5547 unsigned int bytes;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5548 static struct buffer *tmpbuf = NULL;
5549 int compressing = 0;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5550 int consumed_data = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5551
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5552 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5553 return 0;
5554
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5555 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]5556 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5557 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5558 /* Output closed while we were sending data. We must abort and
5559 * wake the other side up.
5560 */
5561 msg->msg_state = HTTP_MSG_ERROR;
5562 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5563 return 1;
5564 }
5565
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5566 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5567 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5568
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5569 /* this is the first time we need the compression buffer */
5570 if (s->comp_algo != NULL && tmpbuf == NULL) {
5571 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
5572 goto aborted_xfer; /* no memory */
5573 }
5574
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5575 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5576 /* we have msg->sov which points to the first byte of message body.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5577 * rep->buf.p still points to the beginning of the message and msg->sol
5578 * is still null. We forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5579 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5580 channel_forward(res, msg->sov);
5581 msg->next = 0;
5582 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5583
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5584 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5585 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5586 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5587 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5588 }
5589
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5590 if (s->comp_algo != NULL) {
5591 int ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
5592 if (ret < 0)
5593 goto missing_data; /* not enough spaces in buffers */
5594 compressing = 1;
5595 }
5596
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5597 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5598 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5599 /* we may have some data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5600 if (s->comp_algo == NULL) {
5601 bytes = msg->sov - msg->sol;
5602 if (msg->chunk_len || bytes) {
5603 msg->sol = msg->sov;
5604 msg->next -= bytes; /* will be forwarded */
5605 msg->chunk_len += bytes;
5606 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5607 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5608 }
5609
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5610 if (msg->msg_state == HTTP_MSG_DATA) {
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5611 int ret;
5612
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5613 /* must still forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5614 if (compressing) {
5615 consumed_data += ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
5616 if (ret < 0)
5617 goto aborted_xfer;
5618 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5619
5620 if (res->to_forward || msg->chunk_len)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5621 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5622
5623 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5624 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5625 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5626 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5627 msg->msg_state = HTTP_MSG_DONE;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5628 if (compressing && consumed_data) {
5629 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5630 compressing = 0;
5631 }
5632 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5633 }
5634 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5635 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5636 * set ->sov and ->next to point to the body and switch to DATA or
5637 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5638 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5639 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5640
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5641 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5642 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5643 else if (ret < 0) {
5644 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5645 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]5646 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5647 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5648 if (compressing) {
5649 if (likely(msg->chunk_len > 0)) {
5650 /* skipping data if we are in compression mode */
5651 b_adv(res->buf, msg->next);
5652 msg->next = 0;
5653 msg->sov = 0;
5654 msg->sol = 0;
5655 } else {
5656 if (consumed_data) {
5657 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5658 compressing = 0;
5659 }
5660 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5661 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5662 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5663 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5664 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5665 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5666 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5667
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5668 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5669 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5670 else if (ret < 0) {
5671 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5672 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]5673 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5674 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5675 /* skipping data in buffer for compression */
5676 if (compressing) {
5677 b_adv(res->buf, msg->next);
5678 msg->next = 0;
5679 msg->sov = 0;
5680 msg->sol = 0;
5681 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5682 /* we're in MSG_CHUNK_SIZE now */
5683 }
5684 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5685 int ret = http_forward_trailers(msg);
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5686
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5687 if (ret == 0)
5688 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5689 else if (ret < 0) {
5690 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5691 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]5692 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5693 }
William Lallemand00bf1de2012-11-22 17:55:14 +0100[diff] [blame]5694 if (s->comp_algo != NULL) {
5695 /* forwarding trailers */
5696 channel_forward(res, msg->next);
5697 msg->next = 0;
5698 }
5699 /* we're in HTTP_MSG_DONE now */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5700 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5701 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5702 int old_state = msg->msg_state;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5703 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5704 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5705 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5706 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5707 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5708 if (http_resync_states(s)) {
5709 http_silent_debug(__LINE__, s);
5710 /* some state changes occurred, maybe the analyser
5711 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5712 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5713 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5714 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5715 /* response errors are most likely due to
5716 * the client aborting the transfer.
5717 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5718 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5719 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5720 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5721 http_capture_bad_message(&s->be->invalid_rep, s, msg, old_state, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5722 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5723 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5724 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5725 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5726 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5727 }
5728 }
5729
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5730 missing_data:
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5731 if (compressing && consumed_data) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5732 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
5733 compressing = 0;
5734 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5735 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5736 if (res->flags & CF_SHUTR) {
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5737 if (!(s->flags & SN_ERR_MASK))
5738 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5739 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5740 if (objt_server(s->target))
5741 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5742 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5743 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5744
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5745 if (res->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5746 goto aborted_xfer;
5747
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5748 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5749 if (!s->req->analysers)
5750 goto return_bad_res;
5751
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5752 /* forward any data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5753 if (s->comp_algo == NULL) {
5754 bytes = msg->sov - msg->sol;
5755 if (msg->chunk_len || bytes) {
5756 msg->sol = msg->sov;
5757 msg->next -= bytes; /* will be forwarded */
5758 msg->chunk_len += bytes;
5759 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5760 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5761 }
5762
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5763 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5764 * 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]5765 * Similarly, with keep-alive on the client side, we don't want to forward a
5766 * close.
5767 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]5768 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5769 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5770 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5771 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5772
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5773 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5774 * 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]5775 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5776 * modes are already handled by the stream sock layer. We must not do
5777 * this in content-length mode because it could present the MSG_MORE
5778 * flag with the last block of forwarded data, which would cause an
5779 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5780 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]5781 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5782 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5783
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5784 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5785 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5786 return 0;
5787
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5788 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5789 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5790 if (objt_server(s->target))
5791 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5792
5793 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5794 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]5795 /* don't send any error message as we're in the body */
5796 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5797 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5798 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5799 if (objt_server(s->target))
5800 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5801
5802 if (!(s->flags & SN_ERR_MASK))
5803 s->flags |= SN_ERR_PRXCOND;
5804 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5805 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5806 return 0;
5807
5808 aborted_xfer:
5809 txn->rsp.msg_state = HTTP_MSG_ERROR;
5810 /* don't send any error message as we're in the body */
5811 stream_int_retnclose(res->cons, NULL);
5812 res->analysers = 0;
5813 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
5814
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5815 s->fe->fe_counters.cli_aborts++;
5816 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5817 if (objt_server(s->target))
5818 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5819
5820 if (!(s->flags & SN_ERR_MASK))
5821 s->flags |= SN_ERR_CLICL;
5822 if (!(s->flags & SN_FINST_MASK))
5823 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5824 return 0;
5825}
5826
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5827/* Iterate the same filter through all request headers.
5828 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5829 * Since it can manage the switch to another backend, it updates the per-proxy
5830 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5831 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5832int 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]5833{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5834 char term;
5835 char *cur_ptr, *cur_end, *cur_next;
5836 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5837 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5838 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5839 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]5840
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5841 last_hdr = 0;
5842
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5843 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5844 old_idx = 0;
5845
5846 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5847 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5848 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5849 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5850 (exp->action == ACT_ALLOW ||
5851 exp->action == ACT_DENY ||
5852 exp->action == ACT_TARPIT))
5853 return 0;
5854
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5855 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5856 if (!cur_idx)
5857 break;
5858
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5859 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5860 cur_ptr = cur_next;
5861 cur_end = cur_ptr + cur_hdr->len;
5862 cur_next = cur_end + cur_hdr->cr + 1;
5863
5864 /* Now we have one header between cur_ptr and cur_end,
5865 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5866 */
5867
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5868 /* The annoying part is that pattern matching needs
5869 * that we modify the contents to null-terminate all
5870 * strings before testing them.
5871 */
5872
5873 term = *cur_end;
5874 *cur_end = '\0';
5875
5876 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5877 switch (exp->action) {
5878 case ACT_SETBE:
5879 /* It is not possible to jump a second time.
5880 * FIXME: should we return an HTTP/500 here so that
5881 * the admin knows there's a problem ?
5882 */
5883 if (t->be != t->fe)
5884 break;
5885
5886 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]5887 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5888 last_hdr = 1;
5889 break;
5890
5891 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5892 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5893 last_hdr = 1;
5894 break;
5895
5896 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5897 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5898 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5899
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5900 t->fe->fe_counters.denied_req++;
5901 if (t->fe != t->be)
5902 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5903 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5904 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5905
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5906 break;
5907
5908 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5909 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5910 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5911
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5912 t->fe->fe_counters.denied_req++;
5913 if (t->fe != t->be)
5914 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5915 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5916 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5917
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5918 break;
5919
5920 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5921 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
5922 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5923 /* FIXME: if the user adds a newline in the replacement, the
5924 * index will not be recalculated for now, and the new line
5925 * will not be counted as a new header.
5926 */
5927
5928 cur_end += delta;
5929 cur_next += delta;
5930 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5931 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5932 break;
5933
5934 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5935 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5936 cur_next += delta;
5937
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5938 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5939 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
5940 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5941 cur_hdr->len = 0;
5942 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]5943 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5944 break;
5945
5946 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5947 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5948 if (cur_end)
5949 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5950
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5951 /* keep the link from this header to next one in case of later
5952 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5953 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5954 old_idx = cur_idx;
5955 }
5956 return 0;
5957}
5958
5959
5960/* Apply the filter to the request line.
5961 * Returns 0 if nothing has been done, 1 if the filter has been applied,
5962 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5963 * Since it can manage the switch to another backend, it updates the per-proxy
5964 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5965 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5966int 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]5967{
5968 char term;
5969 char *cur_ptr, *cur_end;
5970 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5971 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5972 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5973
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5974 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5975 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5976 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5977 (exp->action == ACT_ALLOW ||
5978 exp->action == ACT_DENY ||
5979 exp->action == ACT_TARPIT))
5980 return 0;
5981 else if (exp->action == ACT_REMOVE)
5982 return 0;
5983
5984 done = 0;
5985
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5986 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5987 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5988
5989 /* Now we have the request line between cur_ptr and cur_end */
5990
5991 /* The annoying part is that pattern matching needs
5992 * that we modify the contents to null-terminate all
5993 * strings before testing them.
5994 */
5995
5996 term = *cur_end;
5997 *cur_end = '\0';
5998
5999 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6000 switch (exp->action) {
6001 case ACT_SETBE:
6002 /* It is not possible to jump a second time.
6003 * FIXME: should we return an HTTP/500 here so that
6004 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6005 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6006 if (t->be != t->fe)
6007 break;
6008
6009 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6010 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6011 done = 1;
6012 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6013
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6014 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6015 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6016 done = 1;
6017 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6018
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6019 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6020 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6021
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6022 t->fe->fe_counters.denied_req++;
6023 if (t->fe != t->be)
6024 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6025 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6026 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6027
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6028 done = 1;
6029 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6030
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6031 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6032 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6033
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6034 t->fe->fe_counters.denied_req++;
6035 if (t->fe != t->be)
6036 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6037 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]6038 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6039
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6040 done = 1;
6041 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6042
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6043 case ACT_REPLACE:
6044 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6045 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6046 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6047 /* FIXME: if the user adds a newline in the replacement, the
6048 * index will not be recalculated for now, and the new line
6049 * will not be counted as a new header.
6050 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6051
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6052 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6053 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6054 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6055 HTTP_MSG_RQMETH,
6056 cur_ptr, cur_end + 1,
6057 NULL, NULL);
6058 if (unlikely(!cur_end))
6059 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6060
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6061 /* we have a full request and we know that we have either a CR
6062 * or an LF at <ptr>.
6063 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6064 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6065 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]6066 /* there is no point trying this regex on headers */
6067 return 1;
6068 }
6069 }
6070 *cur_end = term; /* restore the string terminator */
6071 return done;
6072}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6073
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6074
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6075
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6076/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6077 * 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]6078 * 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]6079 * unparsable request. Since it can manage the switch to another backend, it
6080 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6081 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6082int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6083{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6084 struct http_txn *txn = &s->txn;
6085 struct hdr_exp *exp;
6086
6087 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6088 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6089
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6090 /*
6091 * The interleaving of transformations and verdicts
6092 * makes it difficult to decide to continue or stop
6093 * the evaluation.
6094 */
6095
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6096 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6097 break;
6098
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6099 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6100 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6101 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6102 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6103
6104 /* if this filter had a condition, evaluate it now and skip to
6105 * next filter if the condition does not match.
6106 */
6107 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6108 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]6109 ret = acl_pass(ret);
6110 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6111 ret = !ret;
6112
6113 if (!ret)
6114 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6115 }
6116
6117 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6118 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6119 if (unlikely(ret < 0))
6120 return -1;
6121
6122 if (likely(ret == 0)) {
6123 /* The filter did not match the request, it can be
6124 * iterated through all headers.
6125 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6126 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6127 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6128 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6129 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6130}
6131
6132
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6133
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6134/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6135 * Try to retrieve the server associated to the appsession.
6136 * If the server is found, it's assigned to the session.
6137 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6138void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6139 struct http_txn *txn = &t->txn;
6140 appsess *asession = NULL;
6141 char *sessid_temp = NULL;
6142
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6143 if (len > t->be->appsession_len) {
6144 len = t->be->appsession_len;
6145 }
6146
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6147 if (t->be->options2 & PR_O2_AS_REQL) {
6148 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6149 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6150 /* 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]6151 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6152 }
6153
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6154 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6155 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6156 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6157 return;
6158 }
6159
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6160 memcpy(txn->sessid, buf, len);
6161 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6162 }
6163
6164 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6165 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6166 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6167 return;
6168 }
6169
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6170 memcpy(sessid_temp, buf, len);
6171 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6172
6173 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6174 /* free previously allocated memory */
6175 pool_free2(apools.sessid, sessid_temp);
6176
6177 if (asession != NULL) {
6178 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6179 if (!(t->be->options2 & PR_O2_AS_REQL))
6180 asession->request_count++;
6181
6182 if (asession->serverid != NULL) {
6183 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6184
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6185 while (srv) {
6186 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6187 if ((srv->state & SRV_RUNNING) ||
6188 (t->be->options & PR_O_PERSIST) ||
6189 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6190 /* we found the server and it's usable */
6191 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6192 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6193 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6194 t->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6195
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6196 break;
6197 } else {
6198 txn->flags &= ~TX_CK_MASK;
6199 txn->flags |= TX_CK_DOWN;
6200 }
6201 }
6202 srv = srv->next;
6203 }
6204 }
6205 }
6206}
6207
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6208/* Find the end of a cookie value contained between <s> and <e>. It works the
6209 * same way as with headers above except that the semi-colon also ends a token.
6210 * See RFC2965 for more information. Note that it requires a valid header to
6211 * return a valid result.
6212 */
6213char *find_cookie_value_end(char *s, const char *e)
6214{
6215 int quoted, qdpair;
6216
6217 quoted = qdpair = 0;
6218 for (; s < e; s++) {
6219 if (qdpair) qdpair = 0;
6220 else if (quoted) {
6221 if (*s == '\\') qdpair = 1;
6222 else if (*s == '"') quoted = 0;
6223 }
6224 else if (*s == '"') quoted = 1;
6225 else if (*s == ',' || *s == ';') return s;
6226 }
6227 return s;
6228}
6229
6230/* Delete a value in a header between delimiters <from> and <next> in buffer
6231 * <buf>. The number of characters displaced is returned, and the pointer to
6232 * the first delimiter is updated if required. The function tries as much as
6233 * possible to respect the following principles :
6234 * - replace <from> delimiter by the <next> one unless <from> points to a
6235 * colon, in which case <next> is simply removed
6236 * - set exactly one space character after the new first delimiter, unless
6237 * there are not enough characters in the block being moved to do so.
6238 * - remove unneeded spaces before the previous delimiter and after the new
6239 * one.
6240 *
6241 * It is the caller's responsibility to ensure that :
6242 * - <from> points to a valid delimiter or the colon ;
6243 * - <next> points to a valid delimiter or the final CR/LF ;
6244 * - there are non-space chars before <from> ;
6245 * - there is a CR/LF at or after <next>.
6246 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6247int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6248{
6249 char *prev = *from;
6250
6251 if (*prev == ':') {
6252 /* We're removing the first value, preserve the colon and add a
6253 * space if possible.
6254 */
6255 if (!http_is_crlf[(unsigned char)*next])
6256 next++;
6257 prev++;
6258 if (prev < next)
6259 *prev++ = ' ';
6260
6261 while (http_is_spht[(unsigned char)*next])
6262 next++;
6263 } else {
6264 /* Remove useless spaces before the old delimiter. */
6265 while (http_is_spht[(unsigned char)*(prev-1)])
6266 prev--;
6267 *from = prev;
6268
6269 /* copy the delimiter and if possible a space if we're
6270 * not at the end of the line.
6271 */
6272 if (!http_is_crlf[(unsigned char)*next]) {
6273 *prev++ = *next++;
6274 if (prev + 1 < next)
6275 *prev++ = ' ';
6276 while (http_is_spht[(unsigned char)*next])
6277 next++;
6278 }
6279 }
6280 return buffer_replace2(buf, prev, next, NULL, 0);
6281}
6282
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6283/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6284 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6285 * desirable to call it only when needed. This code is quite complex because
6286 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6287 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6288 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6289void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6290{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6291 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6292 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6293 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6294 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6295 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6296
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6297 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6298 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6299 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6300
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6301 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6302 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6303 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6304
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6305 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6306 hdr_beg = hdr_next;
6307 hdr_end = hdr_beg + cur_hdr->len;
6308 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6309
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6310 /* We have one full header between hdr_beg and hdr_end, and the
6311 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6312 * "Cookie:" headers.
6313 */
6314
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6315 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6316 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6317 old_idx = cur_idx;
6318 continue;
6319 }
6320
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6321 del_from = NULL; /* nothing to be deleted */
6322 preserve_hdr = 0; /* assume we may kill the whole header */
6323
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6324 /* Now look for cookies. Conforming to RFC2109, we have to support
6325 * attributes whose name begin with a '$', and associate them with
6326 * the right cookie, if we want to delete this cookie.
6327 * So there are 3 cases for each cookie read :
6328 * 1) it's a special attribute, beginning with a '$' : ignore it.
6329 * 2) it's a server id cookie that we *MAY* want to delete : save
6330 * some pointers on it (last semi-colon, beginning of cookie...)
6331 * 3) it's an application cookie : we *MAY* have to delete a previous
6332 * "special" cookie.
6333 * At the end of loop, if a "special" cookie remains, we may have to
6334 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6335 * *MUST* delete it.
6336 *
6337 * Note: RFC2965 is unclear about the processing of spaces around
6338 * the equal sign in the ATTR=VALUE form. A careful inspection of
6339 * the RFC explicitly allows spaces before it, and not within the
6340 * tokens (attrs or values). An inspection of RFC2109 allows that
6341 * too but section 10.1.3 lets one think that spaces may be allowed
6342 * after the equal sign too, resulting in some (rare) buggy
6343 * implementations trying to do that. So let's do what servers do.
6344 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6345 * allowed quoted strings in values, with any possible character
6346 * after a backslash, including control chars and delimitors, which
6347 * causes parsing to become ambiguous. Browsers also allow spaces
6348 * within values even without quotes.
6349 *
6350 * We have to keep multiple pointers in order to support cookie
6351 * removal at the beginning, middle or end of header without
6352 * corrupting the header. All of these headers are valid :
6353 *
6354 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6355 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6356 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6357 * | | | | | | | | |
6358 * | | | | | | | | hdr_end <--+
6359 * | | | | | | | +--> next
6360 * | | | | | | +----> val_end
6361 * | | | | | +-----------> val_beg
6362 * | | | | +--------------> equal
6363 * | | | +----------------> att_end
6364 * | | +---------------------> att_beg
6365 * | +--------------------------> prev
6366 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6367 */
6368
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6369 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6370 /* Iterate through all cookies on this line */
6371
6372 /* find att_beg */
6373 att_beg = prev + 1;
6374 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6375 att_beg++;
6376
6377 /* find att_end : this is the first character after the last non
6378 * space before the equal. It may be equal to hdr_end.
6379 */
6380 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6381
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6382 while (equal < hdr_end) {
6383 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6384 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6385 if (http_is_spht[(unsigned char)*equal++])
6386 continue;
6387 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6388 }
6389
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6390 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6391 * is between <att_beg> and <equal>, both may be identical.
6392 */
6393
6394 /* look for end of cookie if there is an equal sign */
6395 if (equal < hdr_end && *equal == '=') {
6396 /* look for the beginning of the value */
6397 val_beg = equal + 1;
6398 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6399 val_beg++;
6400
6401 /* find the end of the value, respecting quotes */
6402 next = find_cookie_value_end(val_beg, hdr_end);
6403
6404 /* make val_end point to the first white space or delimitor after the value */
6405 val_end = next;
6406 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6407 val_end--;
6408 } else {
6409 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6410 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6411
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6412 /* We have nothing to do with attributes beginning with '$'. However,
6413 * they will automatically be removed if a header before them is removed,
6414 * since they're supposed to be linked together.
6415 */
6416 if (*att_beg == '$')
6417 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6418
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6419 /* Ignore cookies with no equal sign */
6420 if (equal == next) {
6421 /* This is not our cookie, so we must preserve it. But if we already
6422 * scheduled another cookie for removal, we cannot remove the
6423 * complete header, but we can remove the previous block itself.
6424 */
6425 preserve_hdr = 1;
6426 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6427 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6428 val_end += delta;
6429 next += delta;
6430 hdr_end += delta;
6431 hdr_next += delta;
6432 cur_hdr->len += delta;
6433 http_msg_move_end(&txn->req, delta);
6434 prev = del_from;
6435 del_from = NULL;
6436 }
6437 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6438 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6439
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6440 /* if there are spaces around the equal sign, we need to
6441 * strip them otherwise we'll get trouble for cookie captures,
6442 * or even for rewrites. Since this happens extremely rarely,
6443 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6444 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6445 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6446 int stripped_before = 0;
6447 int stripped_after = 0;
6448
6449 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6450 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6451 equal += stripped_before;
6452 val_beg += stripped_before;
6453 }
6454
6455 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6456 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6457 val_beg += stripped_after;
6458 stripped_before += stripped_after;
6459 }
6460
6461 val_end += stripped_before;
6462 next += stripped_before;
6463 hdr_end += stripped_before;
6464 hdr_next += stripped_before;
6465 cur_hdr->len += stripped_before;
6466 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6467 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6468 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6469
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6470 /* First, let's see if we want to capture this cookie. We check
6471 * that we don't already have a client side cookie, because we
6472 * can only capture one. Also as an optimisation, we ignore
6473 * cookies shorter than the declared name.
6474 */
6475 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6476 (val_end - att_beg >= t->fe->capture_namelen) &&
6477 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6478 int log_len = val_end - att_beg;
6479
6480 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6481 Alert("HTTP logging : out of memory.\n");
6482 } else {
6483 if (log_len > t->fe->capture_len)
6484 log_len = t->fe->capture_len;
6485 memcpy(txn->cli_cookie, att_beg, log_len);
6486 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6487 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6488 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6489
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6490 /* Persistence cookies in passive, rewrite or insert mode have the
6491 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6492 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6493 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6494 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6495 * For cookies in prefix mode, the form is :
6496 *
6497 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6498 */
6499 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6500 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6501 struct server *srv = t->be->srv;
6502 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6503
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6504 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6505 * have the server ID between val_beg and delim, and the original cookie between
6506 * delim+1 and val_end. Otherwise, delim==val_end :
6507 *
6508 * Cookie: NAME=SRV; # in all but prefix modes
6509 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6510 * | || || | |+-> next
6511 * | || || | +--> val_end
6512 * | || || +---------> delim
6513 * | || |+------------> val_beg
6514 * | || +-------------> att_end = equal
6515 * | |+-----------------> att_beg
6516 * | +------------------> prev
6517 * +-------------------------> hdr_beg
6518 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6519
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6520 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6521 for (delim = val_beg; delim < val_end; delim++)
6522 if (*delim == COOKIE_DELIM)
6523 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6524 } else {
6525 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6526 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6527 /* Now check if the cookie contains a date field, which would
6528 * appear after a vertical bar ('|') just after the server name
6529 * and before the delimiter.
6530 */
6531 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6532 if (vbar1) {
6533 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6534 * right is the last seen date. It is a base64 encoded
6535 * 30-bit value representing the UNIX date since the
6536 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6537 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6538 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6539 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6540 if (val_end - vbar1 >= 5) {
6541 val = b64tos30(vbar1);
6542 if (val > 0)
6543 txn->cookie_last_date = val << 2;
6544 }
6545 /* look for a second vertical bar */
6546 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6547 if (vbar1 && (val_end - vbar1 > 5)) {
6548 val = b64tos30(vbar1 + 1);
6549 if (val > 0)
6550 txn->cookie_first_date = val << 2;
6551 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6552 }
6553 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6554
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6555 /* if the cookie has an expiration date and the proxy wants to check
6556 * it, then we do that now. We first check if the cookie is too old,
6557 * then only if it has expired. We detect strict overflow because the
6558 * time resolution here is not great (4 seconds). Cookies with dates
6559 * in the future are ignored if their offset is beyond one day. This
6560 * allows an admin to fix timezone issues without expiring everyone
6561 * and at the same time avoids keeping unwanted side effects for too
6562 * long.
6563 */
6564 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6565 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6566 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6567 txn->flags &= ~TX_CK_MASK;
6568 txn->flags |= TX_CK_OLD;
6569 delim = val_beg; // let's pretend we have not found the cookie
6570 txn->cookie_first_date = 0;
6571 txn->cookie_last_date = 0;
6572 }
6573 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6574 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6575 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6576 txn->flags &= ~TX_CK_MASK;
6577 txn->flags |= TX_CK_EXPIRED;
6578 delim = val_beg; // let's pretend we have not found the cookie
6579 txn->cookie_first_date = 0;
6580 txn->cookie_last_date = 0;
6581 }
6582
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6583 /* Here, we'll look for the first running server which supports the cookie.
6584 * This allows to share a same cookie between several servers, for example
6585 * to dedicate backup servers to specific servers only.
6586 * However, to prevent clients from sticking to cookie-less backup server
6587 * when they have incidentely learned an empty cookie, we simply ignore
6588 * empty cookies and mark them as invalid.
6589 * The same behaviour is applied when persistence must be ignored.
6590 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6591 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6592 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6593
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6594 while (srv) {
6595 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6596 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6597 if ((srv->state & SRV_RUNNING) ||
6598 (t->be->options & PR_O_PERSIST) ||
6599 (t->flags & SN_FORCE_PRST)) {
6600 /* we found the server and we can use it */
6601 txn->flags &= ~TX_CK_MASK;
6602 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6603 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6604 t->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6605 break;
6606 } else {
6607 /* we found a server, but it's down,
6608 * mark it as such and go on in case
6609 * another one is available.
6610 */
6611 txn->flags &= ~TX_CK_MASK;
6612 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6613 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6614 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6615 srv = srv->next;
6616 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6617
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6618 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6619 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6620 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6621 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6622 txn->flags |= TX_CK_UNUSED;
6623 else
6624 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6625 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6626
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6627 /* depending on the cookie mode, we may have to either :
6628 * - delete the complete cookie if we're in insert+indirect mode, so that
6629 * the server never sees it ;
6630 * - remove the server id from the cookie value, and tag the cookie as an
6631 * application cookie so that it does not get accidentely removed later,
6632 * if we're in cookie prefix mode
6633 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6634 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6635 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6636
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6637 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6638 val_end += delta;
6639 next += delta;
6640 hdr_end += delta;
6641 hdr_next += delta;
6642 cur_hdr->len += delta;
6643 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6644
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6645 del_from = NULL;
6646 preserve_hdr = 1; /* we want to keep this cookie */
6647 }
6648 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6649 (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]6650 del_from = prev;
6651 }
6652 } else {
6653 /* This is not our cookie, so we must preserve it. But if we already
6654 * scheduled another cookie for removal, we cannot remove the
6655 * complete header, but we can remove the previous block itself.
6656 */
6657 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6658
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6659 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6660 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]6661 if (att_beg >= del_from)
6662 att_beg += delta;
6663 if (att_end >= del_from)
6664 att_end += delta;
6665 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6666 val_end += delta;
6667 next += delta;
6668 hdr_end += delta;
6669 hdr_next += delta;
6670 cur_hdr->len += delta;
6671 http_msg_move_end(&txn->req, delta);
6672 prev = del_from;
6673 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6674 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6675 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6676
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6677 /* Look for the appsession cookie unless persistence must be ignored */
6678 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
6679 int cmp_len, value_len;
6680 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]6681
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6682 if (t->be->options2 & PR_O2_AS_PFX) {
6683 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6684 value_begin = att_beg + t->be->appsession_name_len;
6685 value_len = val_end - att_beg - t->be->appsession_name_len;
6686 } else {
6687 cmp_len = att_end - att_beg;
6688 value_begin = val_beg;
6689 value_len = val_end - val_beg;
6690 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6691
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6692 /* let's see if the cookie is our appcookie */
6693 if (cmp_len == t->be->appsession_name_len &&
6694 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
6695 manage_client_side_appsession(t, value_begin, value_len);
6696 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6697 }
6698
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6699 /* continue with next cookie on this header line */
6700 att_beg = next;
6701 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6702
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6703 /* There are no more cookies on this line.
6704 * We may still have one (or several) marked for deletion at the
6705 * end of the line. We must do this now in two ways :
6706 * - if some cookies must be preserved, we only delete from the
6707 * mark to the end of line ;
6708 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6709 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6710 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6711 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6712 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6713 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6714 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6715 cur_hdr->len += delta;
6716 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6717 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6718
6719 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6720 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6721 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6722 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6723 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6724 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6725 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6726 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6727 }
6728
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6729 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6730 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6731 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6732}
6733
6734
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6735/* Iterate the same filter through all response headers contained in <rtr>.
6736 * Returns 1 if this filter can be stopped upon return, otherwise 0.
6737 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6738int 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]6739{
6740 char term;
6741 char *cur_ptr, *cur_end, *cur_next;
6742 int cur_idx, old_idx, last_hdr;
6743 struct http_txn *txn = &t->txn;
6744 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6745 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6746
6747 last_hdr = 0;
6748
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6749 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6750 old_idx = 0;
6751
6752 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6753 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6754 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6755 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6756 (exp->action == ACT_ALLOW ||
6757 exp->action == ACT_DENY))
6758 return 0;
6759
6760 cur_idx = txn->hdr_idx.v[old_idx].next;
6761 if (!cur_idx)
6762 break;
6763
6764 cur_hdr = &txn->hdr_idx.v[cur_idx];
6765 cur_ptr = cur_next;
6766 cur_end = cur_ptr + cur_hdr->len;
6767 cur_next = cur_end + cur_hdr->cr + 1;
6768
6769 /* Now we have one header between cur_ptr and cur_end,
6770 * and the next header starts at cur_next.
6771 */
6772
6773 /* The annoying part is that pattern matching needs
6774 * that we modify the contents to null-terminate all
6775 * strings before testing them.
6776 */
6777
6778 term = *cur_end;
6779 *cur_end = '\0';
6780
6781 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6782 switch (exp->action) {
6783 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6784 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6785 last_hdr = 1;
6786 break;
6787
6788 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6789 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6790 last_hdr = 1;
6791 break;
6792
6793 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6794 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6795 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6796 /* FIXME: if the user adds a newline in the replacement, the
6797 * index will not be recalculated for now, and the new line
6798 * will not be counted as a new header.
6799 */
6800
6801 cur_end += delta;
6802 cur_next += delta;
6803 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6804 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6805 break;
6806
6807 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6808 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6809 cur_next += delta;
6810
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6811 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6812 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6813 txn->hdr_idx.used--;
6814 cur_hdr->len = 0;
6815 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6816 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6817 break;
6818
6819 }
6820 }
6821 if (cur_end)
6822 *cur_end = term; /* restore the string terminator */
6823
6824 /* keep the link from this header to next one in case of later
6825 * removal of next header.
6826 */
6827 old_idx = cur_idx;
6828 }
6829 return 0;
6830}
6831
6832
6833/* Apply the filter to the status line in the response buffer <rtr>.
6834 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6835 * or -1 if a replacement resulted in an invalid status line.
6836 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6837int 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]6838{
6839 char term;
6840 char *cur_ptr, *cur_end;
6841 int done;
6842 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6843 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6844
6845
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6846 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6847 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6848 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6849 (exp->action == ACT_ALLOW ||
6850 exp->action == ACT_DENY))
6851 return 0;
6852 else if (exp->action == ACT_REMOVE)
6853 return 0;
6854
6855 done = 0;
6856
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6857 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]6858 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6859
6860 /* Now we have the status line between cur_ptr and cur_end */
6861
6862 /* The annoying part is that pattern matching needs
6863 * that we modify the contents to null-terminate all
6864 * strings before testing them.
6865 */
6866
6867 term = *cur_end;
6868 *cur_end = '\0';
6869
6870 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6871 switch (exp->action) {
6872 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6873 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6874 done = 1;
6875 break;
6876
6877 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6878 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6879 done = 1;
6880 break;
6881
6882 case ACT_REPLACE:
6883 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6884 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6885 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6886 /* FIXME: if the user adds a newline in the replacement, the
6887 * index will not be recalculated for now, and the new line
6888 * will not be counted as a new header.
6889 */
6890
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6891 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6892 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6893 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]6894 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6895 cur_ptr, cur_end + 1,
6896 NULL, NULL);
6897 if (unlikely(!cur_end))
6898 return -1;
6899
6900 /* we have a full respnse and we know that we have either a CR
6901 * or an LF at <ptr>.
6902 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6903 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]6904 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]6905 /* there is no point trying this regex on headers */
6906 return 1;
6907 }
6908 }
6909 *cur_end = term; /* restore the string terminator */
6910 return done;
6911}
6912
6913
6914
6915/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6916 * 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]6917 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
6918 * unparsable response.
6919 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6920int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6921{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6922 struct http_txn *txn = &s->txn;
6923 struct hdr_exp *exp;
6924
6925 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6926 int ret;
6927
6928 /*
6929 * The interleaving of transformations and verdicts
6930 * makes it difficult to decide to continue or stop
6931 * the evaluation.
6932 */
6933
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6934 if (txn->flags & TX_SVDENY)
6935 break;
6936
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6937 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6938 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
6939 exp->action == ACT_PASS)) {
6940 exp = exp->next;
6941 continue;
6942 }
6943
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6944 /* if this filter had a condition, evaluate it now and skip to
6945 * next filter if the condition does not match.
6946 */
6947 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6948 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]6949 ret = acl_pass(ret);
6950 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6951 ret = !ret;
6952 if (!ret)
6953 continue;
6954 }
6955
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6956 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6957 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6958 if (unlikely(ret < 0))
6959 return -1;
6960
6961 if (likely(ret == 0)) {
6962 /* The filter did not match the response, it can be
6963 * iterated through all headers.
6964 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6965 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6966 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6967 }
6968 return 0;
6969}
6970
6971
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6972/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6973 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6974 * desirable to call it only when needed. This function is also used when we
6975 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6976 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6977void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6978{
6979 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6980 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6981 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6982 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6983 char *hdr_beg, *hdr_end, *hdr_next;
6984 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6985
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6986 /* Iterate through the headers.
6987 * we start with the start line.
6988 */
6989 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6990 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6991
6992 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
6993 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6994 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6995
6996 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6997 hdr_beg = hdr_next;
6998 hdr_end = hdr_beg + cur_hdr->len;
6999 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7000
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7001 /* We have one full header between hdr_beg and hdr_end, and the
7002 * next header starts at hdr_next. We're only interested in
7003 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7004 */
7005
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7006 is_cookie2 = 0;
7007 prev = hdr_beg + 10;
7008 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7009 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7010 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7011 if (!val) {
7012 old_idx = cur_idx;
7013 continue;
7014 }
7015 is_cookie2 = 1;
7016 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7017 }
7018
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7019 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7020 * <prev> points to the colon.
7021 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7022 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7023
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7024 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7025 * check-cache is enabled) and we are not interested in checking
7026 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7027 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7028 if (t->be->cookie_name == NULL &&
7029 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7030 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7031 return;
7032
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7033 /* OK so now we know we have to process this response cookie.
7034 * The format of the Set-Cookie header is slightly different
7035 * from the format of the Cookie header in that it does not
7036 * support the comma as a cookie delimiter (thus the header
7037 * cannot be folded) because the Expires attribute described in
7038 * the original Netscape's spec may contain an unquoted date
7039 * with a comma inside. We have to live with this because
7040 * many browsers don't support Max-Age and some browsers don't
7041 * support quoted strings. However the Set-Cookie2 header is
7042 * clean.
7043 *
7044 * We have to keep multiple pointers in order to support cookie
7045 * removal at the beginning, middle or end of header without
7046 * corrupting the header (in case of set-cookie2). A special
7047 * pointer, <scav> points to the beginning of the set-cookie-av
7048 * fields after the first semi-colon. The <next> pointer points
7049 * either to the end of line (set-cookie) or next unquoted comma
7050 * (set-cookie2). All of these headers are valid :
7051 *
7052 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7053 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7054 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7055 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7056 * | | | | | | | | | |
7057 * | | | | | | | | +-> next hdr_end <--+
7058 * | | | | | | | +------------> scav
7059 * | | | | | | +--------------> val_end
7060 * | | | | | +--------------------> val_beg
7061 * | | | | +----------------------> equal
7062 * | | | +------------------------> att_end
7063 * | | +----------------------------> att_beg
7064 * | +------------------------------> prev
7065 * +-----------------------------------------> hdr_beg
7066 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7067
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7068 for (; prev < hdr_end; prev = next) {
7069 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7070
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7071 /* find att_beg */
7072 att_beg = prev + 1;
7073 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7074 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7075
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7076 /* find att_end : this is the first character after the last non
7077 * space before the equal. It may be equal to hdr_end.
7078 */
7079 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7080
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7081 while (equal < hdr_end) {
7082 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7083 break;
7084 if (http_is_spht[(unsigned char)*equal++])
7085 continue;
7086 att_end = equal;
7087 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7088
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7089 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7090 * is between <att_beg> and <equal>, both may be identical.
7091 */
7092
7093 /* look for end of cookie if there is an equal sign */
7094 if (equal < hdr_end && *equal == '=') {
7095 /* look for the beginning of the value */
7096 val_beg = equal + 1;
7097 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7098 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7099
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7100 /* find the end of the value, respecting quotes */
7101 next = find_cookie_value_end(val_beg, hdr_end);
7102
7103 /* make val_end point to the first white space or delimitor after the value */
7104 val_end = next;
7105 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7106 val_end--;
7107 } else {
7108 /* <equal> points to next comma, semi-colon or EOL */
7109 val_beg = val_end = next = equal;
7110 }
7111
7112 if (next < hdr_end) {
7113 /* Set-Cookie2 supports multiple cookies, and <next> points to
7114 * a colon or semi-colon before the end. So skip all attr-value
7115 * pairs and look for the next comma. For Set-Cookie, since
7116 * commas are permitted in values, skip to the end.
7117 */
7118 if (is_cookie2)
7119 next = find_hdr_value_end(next, hdr_end);
7120 else
7121 next = hdr_end;
7122 }
7123
7124 /* Now everything is as on the diagram above */
7125
7126 /* Ignore cookies with no equal sign */
7127 if (equal == val_end)
7128 continue;
7129
7130 /* If there are spaces around the equal sign, we need to
7131 * strip them otherwise we'll get trouble for cookie captures,
7132 * or even for rewrites. Since this happens extremely rarely,
7133 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7134 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7135 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7136 int stripped_before = 0;
7137 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7138
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7139 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7140 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7141 equal += stripped_before;
7142 val_beg += stripped_before;
7143 }
7144
7145 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7146 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7147 val_beg += stripped_after;
7148 stripped_before += stripped_after;
7149 }
7150
7151 val_end += stripped_before;
7152 next += stripped_before;
7153 hdr_end += stripped_before;
7154 hdr_next += stripped_before;
7155 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7156 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7157 }
7158
7159 /* First, let's see if we want to capture this cookie. We check
7160 * that we don't already have a server side cookie, because we
7161 * can only capture one. Also as an optimisation, we ignore
7162 * cookies shorter than the declared name.
7163 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7164 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7165 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7166 (val_end - att_beg >= t->fe->capture_namelen) &&
7167 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7168 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7169 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7170 Alert("HTTP logging : out of memory.\n");
7171 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7172 else {
7173 if (log_len > t->fe->capture_len)
7174 log_len = t->fe->capture_len;
7175 memcpy(txn->srv_cookie, att_beg, log_len);
7176 txn->srv_cookie[log_len] = 0;
7177 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7178 }
7179
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7180 srv = objt_server(t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7181 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7182 if (!(t->flags & SN_IGNORE_PRST) &&
7183 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7184 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7185 /* assume passive cookie by default */
7186 txn->flags &= ~TX_SCK_MASK;
7187 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7188
7189 /* If the cookie is in insert mode on a known server, we'll delete
7190 * this occurrence because we'll insert another one later.
7191 * 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]7192 * a direct access.
7193 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7194 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7195 /* The "preserve" flag was set, we don't want to touch the
7196 * server's cookie.
7197 */
7198 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7199 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7200 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7201 /* this cookie must be deleted */
7202 if (*prev == ':' && next == hdr_end) {
7203 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7204 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7205 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7206 txn->hdr_idx.used--;
7207 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7208 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7209 hdr_next += delta;
7210 http_msg_move_end(&txn->rsp, delta);
7211 /* note: while both invalid now, <next> and <hdr_end>
7212 * are still equal, so the for() will stop as expected.
7213 */
7214 } else {
7215 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7216 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7217 next = prev;
7218 hdr_end += delta;
7219 hdr_next += delta;
7220 cur_hdr->len += delta;
7221 http_msg_move_end(&txn->rsp, delta);
7222 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7223 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7224 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7225 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7226 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7227 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7228 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7229 * with this server since we know it.
7230 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7231 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7232 next += delta;
7233 hdr_end += delta;
7234 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7235 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7236 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7237
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7238 txn->flags &= ~TX_SCK_MASK;
7239 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7240 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7241 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7242 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7243 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7244 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7245 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7246 next += delta;
7247 hdr_end += delta;
7248 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7249 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7250 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7251
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7252 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7253 txn->flags &= ~TX_SCK_MASK;
7254 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7255 }
7256 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7257 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7258 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7259 int cmp_len, value_len;
7260 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7261
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7262 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7263 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7264 value_begin = att_beg + t->be->appsession_name_len;
7265 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]7266 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7267 cmp_len = att_end - att_beg;
7268 value_begin = val_beg;
7269 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7270 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7271
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7272 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7273 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7274 /* free a possibly previously allocated memory */
7275 pool_free2(apools.sessid, txn->sessid);
7276
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7277 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7278 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7279 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7280 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7281 return;
7282 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7283 memcpy(txn->sessid, value_begin, value_len);
7284 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7285 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7286 }
7287 /* that's done for this cookie, check the next one on the same
7288 * line when next != hdr_end (only if is_cookie2).
7289 */
7290 }
7291 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7292 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7293 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7294
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7295 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7296 appsess *asession = NULL;
7297 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7298 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7299 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7300 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7301 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7302 Alert("Not enough Memory process_srv():asession:calloc().\n");
7303 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7304 return;
7305 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7306 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7307
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7308 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7309 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7310 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]7311 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7312 return;
7313 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7314 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7315 asession->sessid[t->be->appsession_len] = 0;
7316
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7317 server_id_len = strlen(objt_server(t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7318 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7319 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7320 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]7321 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7322 return;
7323 }
7324 asession->serverid[0] = '\0';
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7325 memcpy(asession->serverid, objt_server(t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7326
7327 asession->request_count = 0;
7328 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7329 }
7330
7331 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7332 asession->request_count++;
7333 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7334}
7335
7336
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7337/*
7338 * Check if response is cacheable or not. Updates t->flags.
7339 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7340void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7341{
7342 struct http_txn *txn = &t->txn;
7343 char *p1, *p2;
7344
7345 char *cur_ptr, *cur_end, *cur_next;
7346 int cur_idx;
7347
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7348 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7349 return;
7350
7351 /* Iterate through the headers.
7352 * we start with the start line.
7353 */
7354 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7355 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7356
7357 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7358 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7359 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7360
7361 cur_hdr = &txn->hdr_idx.v[cur_idx];
7362 cur_ptr = cur_next;
7363 cur_end = cur_ptr + cur_hdr->len;
7364 cur_next = cur_end + cur_hdr->cr + 1;
7365
7366 /* We have one full header between cur_ptr and cur_end, and the
7367 * next header starts at cur_next. We're only interested in
7368 * "Cookie:" headers.
7369 */
7370
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7371 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7372 if (val) {
7373 if ((cur_end - (cur_ptr + val) >= 8) &&
7374 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7375 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7376 return;
7377 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7378 }
7379
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7380 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7381 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7382 continue;
7383
7384 /* OK, right now we know we have a cache-control header at cur_ptr */
7385
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7386 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7387
7388 if (p1 >= cur_end) /* no more info */
7389 continue;
7390
7391 /* p1 is at the beginning of the value */
7392 p2 = p1;
7393
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7394 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7395 p2++;
7396
7397 /* we have a complete value between p1 and p2 */
7398 if (p2 < cur_end && *p2 == '=') {
7399 /* we have something of the form no-cache="set-cookie" */
7400 if ((cur_end - p1 >= 21) &&
7401 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7402 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7403 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7404 continue;
7405 }
7406
7407 /* OK, so we know that either p2 points to the end of string or to a comma */
7408 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
7409 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7410 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7411 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7412 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7413 return;
7414 }
7415
7416 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7417 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7418 continue;
7419 }
7420 }
7421}
7422
7423
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7424/*
7425 * Try to retrieve a known appsession in the URI, then the associated server.
7426 * If the server is found, it's assigned to the session.
7427 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7428void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7429{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7430 char *end_params, *first_param, *cur_param, *next_param;
7431 char separator;
7432 int value_len;
7433
7434 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7435
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7436 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7437 (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]7438 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7439 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7440
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7441 first_param = NULL;
7442 switch (mode) {
7443 case PR_O2_AS_M_PP:
7444 first_param = memchr(begin, ';', len);
7445 break;
7446 case PR_O2_AS_M_QS:
7447 first_param = memchr(begin, '?', len);
7448 break;
7449 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7450
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7451 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7452 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7453 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7454
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7455 switch (mode) {
7456 case PR_O2_AS_M_PP:
7457 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7458 end_params = (char *) begin + len;
7459 }
7460 separator = ';';
7461 break;
7462 case PR_O2_AS_M_QS:
7463 end_params = (char *) begin + len;
7464 separator = '&';
7465 break;
7466 default:
7467 /* unknown mode, shouldn't happen */
7468 return;
7469 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7470
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7471 cur_param = next_param = end_params;
7472 while (cur_param > first_param) {
7473 cur_param--;
7474 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7475 /* let's see if this is the appsession parameter */
7476 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7477 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7478 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7479 /* Cool... it's the right one */
7480 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7481 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7482 if (value_len > 0) {
7483 manage_client_side_appsession(t, cur_param, value_len);
7484 }
7485 break;
7486 }
7487 next_param = cur_param;
7488 }
7489 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7490#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7491 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7492 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7493#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7494}
7495
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7496/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7497 * 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]7498 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7499 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7500 * 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]7501 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7502 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7503 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7504 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7505int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7506{
7507 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7508 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7509 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7510 const char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7511
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7512 if (!uri_auth)
7513 return 0;
7514
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7515 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]7516 return 0;
7517
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7518 memset(&si->applet.ctx.stats, 0, sizeof(si->applet.ctx.stats));
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7519 si->applet.ctx.stats.st_code = STAT_STATUS_INIT;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7520
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7521 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7522 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7523 return 0;
7524
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7525 h = uri;
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]7526 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7527 return 0;
7528
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7529 h += uri_auth->uri_len;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7530 while (h <= uri + msg->sl.rq.u_l - 3) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7531 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7532 si->applet.ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7533 break;
7534 }
7535 h++;
7536 }
7537
7538 if (uri_auth->refresh) {
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7539 h = uri + uri_auth->uri_len;
7540 while (h <= uri + msg->sl.rq.u_l - 10) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7541 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7542 si->applet.ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7543 break;
7544 }
7545 h++;
7546 }
7547 }
7548
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7549 h = uri + uri_auth->uri_len;
7550 while (h <= uri + msg->sl.rq.u_l - 4) {
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7551 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7552 si->applet.ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7553 break;
7554 }
7555 h++;
7556 }
7557
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7558 h = uri + uri_auth->uri_len;
7559 while (h <= uri + msg->sl.rq.u_l - 8) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7560 if (memcmp(h, ";st=", 4) == 0) {
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7561 int i;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7562 h += 4;
Cyril Bonté20a804a2012-05-10 19:42:52 +0200[diff] [blame]7563 si->applet.ctx.stats.st_code = STAT_STATUS_UNKN;
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7564 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
7565 if (strncmp(stat_status_codes[i], h, 4) == 0) {
7566 si->applet.ctx.stats.st_code = i;
7567 break;
7568 }
7569 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7570 break;
7571 }
7572 h++;
7573 }
7574
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7575 si->applet.ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7576
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7577 return 1;
7578}
7579
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7580/*
7581 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7582 * By default it tries to report the error position as msg->err_pos. However if
7583 * this one is not set, it will then report msg->next, which is the last known
7584 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7585 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7586 */
7587void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7588 struct http_msg *msg,
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7589 int state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7590{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7591 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7592 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7593
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7594 es->len = MIN(chn->buf->i, sizeof(es->buf));
7595 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7596 len1 = MIN(len1, es->len);
7597 len2 = es->len - len1; /* remaining data if buffer wraps */
7598
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7599 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7600 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7601 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7602
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7603 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7604 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7605 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7606 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7607
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7608 es->when = date; // user-visible date
7609 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7610 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7611 es->oe = other_end;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]7612 es->src = s->req->prod->conn->addr.from;
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7613 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7614 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7615 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7616 es->s_flags = s->flags;
7617 es->t_flags = s->txn.flags;
7618 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7619 es->b_out = chn->buf->o;
7620 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7621 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7622 es->m_clen = msg->chunk_len;
7623 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7624}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7625
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7626/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7627 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7628 * performed over the whole headers. Otherwise it must contain a valid header
7629 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7630 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7631 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7632 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
7633 * -1.
7634 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7635 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7636unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7637 struct hdr_idx *idx, int occ,
7638 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7639{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7640 struct hdr_ctx local_ctx;
7641 char *ptr_hist[MAX_HDR_HISTORY];
7642 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7643 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7644 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7645
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7646 if (!ctx) {
7647 local_ctx.idx = 0;
7648 ctx = &local_ctx;
7649 }
7650
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7651 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7652 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7653 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7654 occ--;
7655 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7656 *vptr = ctx->line + ctx->val;
7657 *vlen = ctx->vlen;
7658 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7659 }
7660 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7661 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7662 }
7663
7664 /* negative occurrence, we scan all the list then walk back */
7665 if (-occ > MAX_HDR_HISTORY)
7666 return 0;
7667
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7668 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7669 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7670 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7671 len_hist[hist_ptr] = ctx->vlen;
7672 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7673 hist_ptr = 0;
7674 found++;
7675 }
7676 if (-occ > found)
7677 return 0;
7678 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
7679 * find occurrence -occ, so we have to check [hist_ptr+occ].
7680 */
7681 hist_ptr += occ;
7682 if (hist_ptr >= MAX_HDR_HISTORY)
7683 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7684 *vptr = ptr_hist[hist_ptr];
7685 *vlen = len_hist[hist_ptr];
7686 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7687}
7688
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]7689/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7690 * Print a debug line with a header. Always stop at the first CR or LF char,
7691 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
7692 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7693 */
7694void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
7695{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7696 int max;
7697 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]7698 dir, (unsigned short)t->req->prod->conn->t.sock.fd,
7699 (unsigned short)t->req->cons->conn->t.sock.fd);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7700
7701 for (max = 0; start + max < end; max++)
7702 if (start[max] == '\r' || start[max] == '\n')
7703 break;
7704
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7705 UBOUND(max, trash.size - trash.len - 3);
7706 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
7707 trash.str[trash.len++] = '\n';
7708 if (write(1, trash.str, trash.len) < 0) /* shut gcc warning */;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7709}
7710
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7711/*
7712 * Initialize a new HTTP transaction for session <s>. It is assumed that all
7713 * the required fields are properly allocated and that we only need to (re)init
7714 * them. This should be used before processing any new request.
7715 */
7716void http_init_txn(struct session *s)
7717{
7718 struct http_txn *txn = &s->txn;
7719 struct proxy *fe = s->fe;
7720
7721 txn->flags = 0;
7722 txn->status = -1;
7723
William Lallemand5f232402012-04-05 18:02:55 +0200[diff] [blame]7724 global.req_count++;
7725
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7726 txn->cookie_first_date = 0;
7727 txn->cookie_last_date = 0;
7728
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7729 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7730 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7731 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7732 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7733 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7734 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]7735 txn->req.chunk_len = 0LL;
7736 txn->req.body_len = 0LL;
7737 txn->rsp.chunk_len = 0LL;
7738 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7739 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
7740 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]7741 txn->req.chn = s->req;
7742 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7743
7744 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7745
7746 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
7747 if (fe->options2 & PR_O2_REQBUG_OK)
7748 txn->req.err_pos = -1; /* let buggy requests pass */
7749
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7750 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7751 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
7752
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7753 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7754 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
7755
7756 if (txn->hdr_idx.v)
7757 hdr_idx_init(&txn->hdr_idx);
7758}
7759
7760/* to be used at the end of a transaction */
7761void http_end_txn(struct session *s)
7762{
7763 struct http_txn *txn = &s->txn;
7764
7765 /* these ones will have been dynamically allocated */
7766 pool_free2(pool2_requri, txn->uri);
7767 pool_free2(pool2_capture, txn->cli_cookie);
7768 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7769 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7770 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7771
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7772 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7773 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7774 txn->uri = NULL;
7775 txn->srv_cookie = NULL;
7776 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7777
7778 if (txn->req.cap) {
7779 struct cap_hdr *h;
7780 for (h = s->fe->req_cap; h; h = h->next)
7781 pool_free2(h->pool, txn->req.cap[h->index]);
7782 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
7783 }
7784
7785 if (txn->rsp.cap) {
7786 struct cap_hdr *h;
7787 for (h = s->fe->rsp_cap; h; h = h->next)
7788 pool_free2(h->pool, txn->rsp.cap[h->index]);
7789 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
7790 }
7791
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7792}
7793
7794/* to be used at the end of a transaction to prepare a new one */
7795void http_reset_txn(struct session *s)
7796{
7797 http_end_txn(s);
7798 http_init_txn(s);
7799
7800 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7801 s->logs.logwait = s->fe->to_log;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]7802 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7803 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]7804 /* re-init store persistence */
7805 s->store_count = 0;
7806
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7807 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7808
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7809 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7810
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7811 /* We must trim any excess data from the response buffer, because we
7812 * may have blocked an invalid response from a server that we don't
7813 * want to accidentely forward once we disable the analysers, nor do
7814 * we want those data to come along with next response. A typical
7815 * example of such data would be from a buggy server responding to
7816 * a HEAD with some data, or sending more than the advertised
7817 * content-length.
7818 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7819 if (unlikely(s->rep->buf->i))
7820 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7821
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7822 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7823 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7824
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7825 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7826 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7827
7828 s->req->rex = TICK_ETERNITY;
7829 s->req->wex = TICK_ETERNITY;
7830 s->req->analyse_exp = TICK_ETERNITY;
7831 s->rep->rex = TICK_ETERNITY;
7832 s->rep->wex = TICK_ETERNITY;
7833 s->rep->analyse_exp = TICK_ETERNITY;
7834}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7835
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7836void free_http_req_rules(struct list *r) {
7837 struct http_req_rule *tr, *pr;
7838
7839 list_for_each_entry_safe(pr, tr, r, list) {
7840 LIST_DEL(&pr->list);
7841 if (pr->action == HTTP_REQ_ACT_HTTP_AUTH)
7842 free(pr->http_auth.realm);
7843
7844 free(pr);
7845 }
7846}
7847
7848struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
7849{
7850 struct http_req_rule *rule;
7851 int cur_arg;
7852
7853 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
7854 if (!rule) {
7855 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
7856 return NULL;
7857 }
7858
7859 if (!*args[0]) {
7860 goto req_error_parsing;
7861 } else if (!strcmp(args[0], "allow")) {
7862 rule->action = HTTP_REQ_ACT_ALLOW;
7863 cur_arg = 1;
7864 } else if (!strcmp(args[0], "deny")) {
7865 rule->action = HTTP_REQ_ACT_DENY;
7866 cur_arg = 1;
7867 } else if (!strcmp(args[0], "auth")) {
7868 rule->action = HTTP_REQ_ACT_HTTP_AUTH;
7869 cur_arg = 1;
7870
7871 while(*args[cur_arg]) {
7872 if (!strcmp(args[cur_arg], "realm")) {
7873 rule->http_auth.realm = strdup(args[cur_arg + 1]);
7874 cur_arg+=2;
7875 continue;
7876 } else
7877 break;
7878 }
7879 } else {
7880req_error_parsing:
7881 Alert("parsing [%s:%d]: %s '%s', expects 'allow', 'deny', 'auth'.\n",
7882 file, linenum, *args[1]?"unknown parameter":"missing keyword in", args[*args[1]?1:0]);
7883 return NULL;
7884 }
7885
7886 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
7887 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7888 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7889
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7890 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
7891 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
7892 file, linenum, args[0], errmsg);
7893 free(errmsg);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7894 return NULL;
7895 }
7896 rule->cond = cond;
7897 }
7898 else if (*args[cur_arg]) {
7899 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
7900 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
7901 file, linenum, args[0], args[cur_arg]);
7902 return NULL;
7903 }
7904
7905 return rule;
7906}
7907
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7908/************************************************************************/
7909/* The code below is dedicated to ACL parsing and matching */
7910/************************************************************************/
7911
7912
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7913/* This function ensures that the prerequisites for an L7 fetch are ready,
7914 * which means that a request or response is ready. If some data is missing,
7915 * 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]7916 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
7917 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7918 *
7919 * The function returns :
7920 * 0 if some data is missing or if the requested data cannot be fetched
7921 * -1 if it is certain that we'll never have any HTTP message there
7922 * 1 if an HTTP message is ready
7923 */
7924static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7925acl_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7926 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7927{
7928 struct http_txn *txn = l7;
7929 struct http_msg *msg = &txn->req;
7930
7931 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
7932 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
7933 */
7934
7935 if (unlikely(!s || !txn))
7936 return 0;
7937
7938 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7939 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7940
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7941 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7942 if (unlikely(!s->req))
7943 return 0;
7944
7945 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]7946 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7947 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7948 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7949 return -1;
7950 }
7951
7952 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7953 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7954 http_msg_analyzer(msg, &txn->hdr_idx);
7955
7956 /* Still no valid request ? */
7957 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]7958 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7959 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7960 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7961 return -1;
7962 }
7963 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7964 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7965 return 0;
7966 }
7967
7968 /* OK we just got a valid HTTP request. We have some minor
7969 * preparation to perform so that further checks can rely
7970 * on HTTP tests.
7971 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7972 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7973 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
7974 s->flags |= SN_REDIRECTABLE;
7975
7976 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7977 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7978 return -1;
7979 }
7980 }
7981
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7982 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7983 return 0; /* data might have moved and indexes changed */
7984
7985 /* otherwise everything's ready for the request */
7986 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7987 else {
7988 /* Check for a dependency on a response */
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7989 if (txn->rsp.msg_state < HTTP_MSG_BODY)
7990 return 0;
7991 }
7992
7993 /* everything's OK */
7994 return 1;
7995}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7996
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7997#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7998 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]7999
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8000#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8001 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]8002
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8003
8004/* 1. Check on METHOD
8005 * We use the pre-parsed method if it is known, and store its number as an
8006 * integer. If it is unknown, we use the pointer and the length.
8007 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8008static 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]8009{
8010 int len, meth;
8011
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8012 len = strlen(*text);
8013 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8014
8015 pattern->val.i = meth;
8016 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8017 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8018 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8019 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8020 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8021 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8022 pattern->len = len;
8023 }
8024 return 1;
8025}
8026
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8027/* This function fetches the method of current HTTP request and stores
8028 * it in the global pattern struct as a chunk. There are two possibilities :
8029 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
8030 * in <len> and <ptr> is NULL ;
8031 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
8032 * <len> to its length.
8033 * This is intended to be used with acl_match_meth() only.
8034 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8035static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8036acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8037 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8038{
8039 int meth;
8040 struct http_txn *txn = l7;
8041
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8042 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8043
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8044 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8045 smp->type = SMP_T_UINT;
8046 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8047 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8048 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
8049 /* ensure the indexes are not affected */
8050 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8051 smp->type = SMP_T_CSTR;
8052 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8053 smp->data.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8054 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8055 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8056 return 1;
8057}
8058
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8059/* See above how the method is stored in the global pattern */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8060static int acl_match_meth(struct sample *smp, struct acl_pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8061{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8062 int icase;
8063
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8064
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8065 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8066 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8067 if (smp->data.uint == pattern->val.i)
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8068 return ACL_PAT_PASS;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8069 return ACL_PAT_FAIL;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8070 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8071
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8072 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
8073 if (pattern->val.i != HTTP_METH_OTHER)
8074 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8075
8076 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8077 if (pattern->len != smp->data.str.len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8078 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8079
8080 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8081 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
8082 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]8083 return ACL_PAT_FAIL;
8084 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8085}
8086
8087/* 2. Check on Request/Status Version
8088 * We simply compare strings here.
8089 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8090static 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]8091{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8092 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8093 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8094 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8095 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8096 }
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8097 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8098 return 1;
8099}
8100
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8101static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8102acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8103 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8104{
8105 struct http_txn *txn = l7;
8106 char *ptr;
8107 int len;
8108
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8109 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8110
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8111 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8112 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8113
8114 while ((len-- > 0) && (*ptr++ != '/'));
8115 if (len <= 0)
8116 return 0;
8117
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8118 smp->type = SMP_T_CSTR;
8119 smp->data.str.str = ptr;
8120 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8121
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8122 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8123 return 1;
8124}
8125
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8126static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8127acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8128 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8129{
8130 struct http_txn *txn = l7;
8131 char *ptr;
8132 int len;
8133
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8134 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8135
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8136 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8137 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8138
8139 while ((len-- > 0) && (*ptr++ != '/'));
8140 if (len <= 0)
8141 return 0;
8142
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8143 smp->type = SMP_T_CSTR;
8144 smp->data.str.str = ptr;
8145 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8146
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8147 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8148 return 1;
8149}
8150
8151/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8152static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8153acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8154 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8155{
8156 struct http_txn *txn = l7;
8157 char *ptr;
8158 int len;
8159
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8160 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8161
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8162 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8163 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8164
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8165 smp->type = SMP_T_UINT;
8166 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8167 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8168 return 1;
8169}
8170
8171/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8172static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8173smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8174 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8175{
8176 struct http_txn *txn = l7;
8177
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8178 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8179
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8180 smp->type = SMP_T_CSTR;
8181 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8182 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8183 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8184 return 1;
8185}
8186
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8187static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8188smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8189 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8190{
8191 struct http_txn *txn = l7;
8192
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8193 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8194
8195 /* Parse HTTP request */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8196 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->conn->addr.to);
8197 if (((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]8198 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8199 smp->type = SMP_T_IPV4;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8200 smp->data.ipv4 = ((struct sockaddr_in *)&l4->req->cons->conn->addr.to)->sin_addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8201
8202 /*
8203 * If we are parsing url in frontend space, we prepare backend stage
8204 * to not parse again the same url ! optimization lazyness...
8205 */
8206 if (px->options & PR_O_HTTP_PROXY)
8207 l4->flags |= SN_ADDR_SET;
8208
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8209 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8210 return 1;
8211}
8212
8213static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8214smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8215 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8216{
8217 struct http_txn *txn = l7;
8218
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8219 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8220
8221 /* Same optimization as url_ip */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8222 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]8223 smp->type = SMP_T_UINT;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]8224 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]8225
8226 if (px->options & PR_O_HTTP_PROXY)
8227 l4->flags |= SN_ADDR_SET;
8228
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8229 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8230 return 1;
8231}
8232
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8233/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
8234 * Accepts an optional argument of type string containing the header field name,
8235 * and an optional argument of type signed or unsigned integer to request an
8236 * explicit occurrence of the header. Note that in the event of a missing name,
8237 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8238 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8239static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8240smp_fetch_hdr(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;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8245 struct hdr_ctx *ctx = (struct hdr_ctx *)smp->ctx.a;
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 Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8247 int occ = 0;
8248 const char *name_str = NULL;
8249 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8250
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8251 if (args) {
8252 if (args[0].type != ARGT_STR)
8253 return 0;
8254 name_str = args[0].data.str.str;
8255 name_len = args[0].data.str.len;
8256
8257 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
8258 occ = args[1].data.uint;
8259 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8260
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8261 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8262
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8263 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8264 /* search for header from the beginning */
8265 ctx->idx = 0;
8266
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8267 if (!occ && !(opt & SMP_OPT_ITERATE))
8268 /* no explicit occurrence and single fetch => last header by default */
8269 occ = -1;
8270
8271 if (!occ)
8272 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8273 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]8274
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8275 smp->type = SMP_T_CSTR;
8276 smp->flags |= SMP_F_VOL_HDR;
8277 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]8278 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8279
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8280 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8281 return 0;
8282}
8283
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8284/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8285 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8286 */
8287static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8288smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8289 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8290{
8291 struct http_txn *txn = l7;
8292 struct hdr_idx *idx = &txn->hdr_idx;
8293 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8294 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]8295 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8296
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8297 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8298 return 0;
8299
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8300 CHECK_HTTP_MESSAGE_FIRST();
8301
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8302 ctx.idx = 0;
8303 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8304 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]8305 cnt++;
8306
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8307 smp->type = SMP_T_UINT;
8308 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8309 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8310 return 1;
8311}
8312
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8313/* Fetch an HTTP header's integer value. The integer value is returned. It
8314 * takes a mandatory argument of type string and an optional one of type int
8315 * to designate a specific occurrence. It returns an unsigned integer, which
8316 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8317 */
8318static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8319smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8320 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8321{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8322 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8323
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8324 if (ret > 0) {
8325 smp->type = SMP_T_UINT;
8326 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8327 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8328
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8329 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8330}
8331
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8332/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
8333 * and an optional one of type int to designate a specific occurrence.
8334 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8335 */
8336static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8337smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8338 const struct arg *args, struct sample *smp)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8339{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8340 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8341
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8342 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8343 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
8344 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8345 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]8346 } else {
8347 struct chunk *temp = sample_get_trash_chunk();
8348 if (smp->data.str.len < temp->size - 1) {
8349 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
8350 temp->str[smp->data.str.len] = '\0';
8351 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
8352 smp->type = SMP_T_IPV6;
8353 break;
8354 }
8355 }
8356 }
8357
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8358 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8359 if (!(smp->flags & SMP_F_NOT_LAST))
8360 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8361 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8362 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8363}
8364
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8365/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
8366 * the first '/' after the possible hostname, and ends before the possible '?'.
8367 */
8368static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8369smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8370 const struct arg *args, struct sample *smp)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8371{
8372 struct http_txn *txn = l7;
8373 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8374
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8375 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8376
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8377 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]8378 ptr = http_get_path(txn);
8379 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8380 return 0;
8381
8382 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8383 smp->type = SMP_T_CSTR;
8384 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8385
8386 while (ptr < end && *ptr != '?')
8387 ptr++;
8388
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8389 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8390 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8391 return 1;
8392}
8393
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8394/* This produces a concatenation of the first occurrence of the Host header
8395 * followed by the path component if it begins with a slash ('/'). This means
8396 * that '*' will not be added, resulting in exactly the first Host entry.
8397 * If no Host header is found, then the path is returned as-is. The returned
8398 * value is stored in the trash so it does not need to be marked constant.
8399 */
8400static int
8401smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8402 const struct arg *args, struct sample *smp)
8403{
8404 struct http_txn *txn = l7;
8405 char *ptr, *end, *beg;
8406 struct hdr_ctx ctx;
8407
8408 CHECK_HTTP_MESSAGE_FIRST();
8409
8410 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8411 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]8412 !ctx.vlen)
8413 return smp_fetch_path(px, l4, l7, opt, args, smp);
8414
8415 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8416 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8417 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8418 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8419 smp->data.str.len = ctx.vlen;
8420
8421 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8422 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]8423 beg = http_get_path(txn);
8424 if (!beg)
8425 beg = end;
8426
8427 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
8428
8429 if (beg < ptr && *beg == '/') {
8430 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
8431 smp->data.str.len += ptr - beg;
8432 }
8433
8434 smp->flags = SMP_F_VOL_1ST;
8435 return 1;
8436}
8437
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8438static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8439acl_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8440 const struct arg *args, struct sample *smp)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8441{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8442 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8443 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8444 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8445
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8446 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8447
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8448 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8449 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8450 return 1;
8451}
8452
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8453/* return a valid test if the current request is the first one on the connection */
8454static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8455acl_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]8456 const struct arg *args, struct sample *smp)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8457{
8458 if (!s)
8459 return 0;
8460
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8461 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8462 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8463 return 1;
8464}
8465
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8466/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8467static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8468acl_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8469 const struct arg *args, struct sample *smp)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8470{
8471
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8472 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8473 return 0;
8474
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8475 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8476
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8477 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8478 return 0;
8479
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8480 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8481 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]8482 return 1;
8483}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8484
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]8485/* Accepts exactly 1 argument of type userlist */
8486static int
8487acl_fetch_http_auth_grp(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8488 const struct arg *args, struct sample *smp)
8489{
8490
8491 if (!args || args->type != ARGT_USR)
8492 return 0;
8493
8494 CHECK_HTTP_MESSAGE_FIRST();
8495
8496 if (!get_http_auth(l4))
8497 return 0;
8498
8499 /* acl_match_auth() will need several information at once */
8500 smp->ctx.a[0] = args->data.usr; /* user list */
8501 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
8502 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
8503
8504 /* if the user does not belong to the userlist or has a wrong password,
8505 * report that it unconditionally does not match. Otherwise we return
8506 * a non-zero integer which will be ignored anyway since all the params
8507 * that acl_match_auth() will use are in test->ctx.a[0,1,2].
8508 */
8509 smp->type = SMP_T_BOOL;
8510 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
8511 if (smp->data.uint)
8512 smp->type = SMP_T_UINT;
8513
8514 return 1;
8515}
8516
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8517/* Try to find the next occurrence of a cookie name in a cookie header value.
8518 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
8519 * the cookie value is returned into *value and *value_l, and the function
8520 * returns a pointer to the next pointer to search from if the value was found.
8521 * Otherwise if the cookie was not found, NULL is returned and neither value
8522 * nor value_l are touched. The input <hdr> string should first point to the
8523 * header's value, and the <hdr_end> pointer must point to the first character
8524 * not part of the value. <list> must be non-zero if value may represent a list
8525 * of values (cookie headers). This makes it faster to abort parsing when no
8526 * list is expected.
8527 */
8528static char *
8529extract_cookie_value(char *hdr, const char *hdr_end,
8530 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]8531 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8532{
8533 char *equal, *att_end, *att_beg, *val_beg, *val_end;
8534 char *next;
8535
8536 /* we search at least a cookie name followed by an equal, and more
8537 * generally something like this :
8538 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
8539 */
8540 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
8541 /* Iterate through all cookies on this line */
8542
8543 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8544 att_beg++;
8545
8546 /* find att_end : this is the first character after the last non
8547 * space before the equal. It may be equal to hdr_end.
8548 */
8549 equal = att_end = att_beg;
8550
8551 while (equal < hdr_end) {
8552 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
8553 break;
8554 if (http_is_spht[(unsigned char)*equal++])
8555 continue;
8556 att_end = equal;
8557 }
8558
8559 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8560 * is between <att_beg> and <equal>, both may be identical.
8561 */
8562
8563 /* look for end of cookie if there is an equal sign */
8564 if (equal < hdr_end && *equal == '=') {
8565 /* look for the beginning of the value */
8566 val_beg = equal + 1;
8567 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8568 val_beg++;
8569
8570 /* find the end of the value, respecting quotes */
8571 next = find_cookie_value_end(val_beg, hdr_end);
8572
8573 /* make val_end point to the first white space or delimitor after the value */
8574 val_end = next;
8575 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8576 val_end--;
8577 } else {
8578 val_beg = val_end = next = equal;
8579 }
8580
8581 /* We have nothing to do with attributes beginning with '$'. However,
8582 * they will automatically be removed if a header before them is removed,
8583 * since they're supposed to be linked together.
8584 */
8585 if (*att_beg == '$')
8586 continue;
8587
8588 /* Ignore cookies with no equal sign */
8589 if (equal == next)
8590 continue;
8591
8592 /* Now we have the cookie name between att_beg and att_end, and
8593 * its value between val_beg and val_end.
8594 */
8595
8596 if (att_end - att_beg == cookie_name_l &&
8597 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
8598 /* let's return this value and indicate where to go on from */
8599 *value = val_beg;
8600 *value_l = val_end - val_beg;
8601 return next + 1;
8602 }
8603
8604 /* Set-Cookie headers only have the name in the first attr=value part */
8605 if (!list)
8606 break;
8607 }
8608
8609 return NULL;
8610}
8611
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8612/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8613 * smp->ctx.a[0] for the in-header position, smp->ctx.a[1] for the
8614 * 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]8615 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8616 * 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]8617 * Accepts exactly 1 argument of type string. If the input options indicate
8618 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8619 */
8620static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8621smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8622 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8623{
8624 struct http_txn *txn = l7;
8625 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8626 struct hdr_ctx *ctx = (struct hdr_ctx *)&smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8627 const struct http_msg *msg;
8628 const char *hdr_name;
8629 int hdr_name_len;
8630 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8631 int occ = 0;
8632 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8633
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8634 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8635 return 0;
8636
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8637 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8638
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8639 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8640 msg = &txn->req;
8641 hdr_name = "Cookie";
8642 hdr_name_len = 6;
8643 } else {
8644 msg = &txn->rsp;
8645 hdr_name = "Set-Cookie";
8646 hdr_name_len = 10;
8647 }
8648
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8649 if (!occ && !(opt & SMP_OPT_ITERATE))
8650 /* no explicit occurrence and single fetch => last cookie by default */
8651 occ = -1;
8652
8653 /* OK so basically here, either we want only one value and it's the
8654 * last one, or we want to iterate over all of them and we fetch the
8655 * next one.
8656 */
8657
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8658 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8659 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8660 /* search for the header from the beginning, we must first initialize
8661 * the search parameters.
8662 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8663 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8664 ctx->idx = 0;
8665 }
8666
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8667 smp->flags |= SMP_F_VOL_HDR;
8668
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8669 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8670 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
8671 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8672 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
8673 goto out;
8674
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8675 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8676 continue;
8677
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8678 smp->ctx.a[0] = ctx->line + ctx->val;
8679 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8680 }
8681
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8682 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8683 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]8684 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8685 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8686 &smp->data.str.str,
8687 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8688 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8689 found = 1;
8690 if (occ >= 0) {
8691 /* one value was returned into smp->data.str.{str,len} */
8692 smp->flags |= SMP_F_NOT_LAST;
8693 return 1;
8694 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8695 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8696 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8697 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8698 /* all cookie headers and values were scanned. If we're looking for the
8699 * last occurrence, we may return it now.
8700 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8701 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8702 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8703 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8704}
8705
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8706/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8707 * 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]8708 * multiple cookies may be parsed on the same line.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8709 * Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8710 */
8711static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8712acl_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8713 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8714{
8715 struct http_txn *txn = l7;
8716 struct hdr_idx *idx = &txn->hdr_idx;
8717 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8718 const struct http_msg *msg;
8719 const char *hdr_name;
8720 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8721 int cnt;
8722 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8723 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8724
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8725 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8726 return 0;
8727
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8728 CHECK_HTTP_MESSAGE_FIRST();
8729
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8730 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8731 msg = &txn->req;
8732 hdr_name = "Cookie";
8733 hdr_name_len = 6;
8734 } else {
8735 msg = &txn->rsp;
8736 hdr_name = "Set-Cookie";
8737 hdr_name_len = 10;
8738 }
8739
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8740 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]8741 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8742 ctx.idx = 0;
8743 cnt = 0;
8744
8745 while (1) {
8746 /* Note: val_beg == NULL every time we need to fetch a new header */
8747 if (!val_beg) {
8748 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
8749 break;
8750
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8751 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8752 continue;
8753
8754 val_beg = ctx.line + ctx.val;
8755 val_end = val_beg + ctx.vlen;
8756 }
8757
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8758 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8759 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8760 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8761 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8762 &smp->data.str.str,
8763 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8764 cnt++;
8765 }
8766 }
8767
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8768 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8769 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8770 return 1;
8771}
8772
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8773/* Fetch an cookie's integer value. The integer value is returned. It
8774 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
8775 */
8776static int
8777smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8778 const struct arg *args, struct sample *smp)
8779{
8780 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp);
8781
8782 if (ret > 0) {
8783 smp->type = SMP_T_UINT;
8784 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8785 }
8786
8787 return ret;
8788}
8789
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8790/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8791/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8792/************************************************************************/
8793
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8794/*
8795 * Given a path string and its length, find the position of beginning of the
8796 * query string. Returns NULL if no query string is found in the path.
8797 *
8798 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
8799 *
8800 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
8801 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8802static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8803{
8804 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]8805
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8806 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8807 return p ? p + 1 : NULL;
8808}
8809
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8810static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8811{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8812 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8813}
8814
8815/*
8816 * Given a url parameter, find the starting position of the first occurence,
8817 * or NULL if the parameter is not found.
8818 *
8819 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
8820 * the function will return query_string+8.
8821 */
8822static char*
8823find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8824 char* url_param_name, size_t url_param_name_l,
8825 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8826{
8827 char *pos, *last;
8828
8829 pos = query_string;
8830 last = query_string + query_string_l - url_param_name_l - 1;
8831
8832 while (pos <= last) {
8833 if (pos[url_param_name_l] == '=') {
8834 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
8835 return pos;
8836 pos += url_param_name_l + 1;
8837 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8838 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8839 pos++;
8840 pos++;
8841 }
8842 return NULL;
8843}
8844
8845/*
8846 * Given a url parameter name, returns its value and size into *value and
8847 * *value_l respectively, and returns non-zero. If the parameter is not found,
8848 * zero is returned and value/value_l are not touched.
8849 */
8850static int
8851find_url_param_value(char* path, size_t path_l,
8852 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8853 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8854{
8855 char *query_string, *qs_end;
8856 char *arg_start;
8857 char *value_start, *value_end;
8858
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8859 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8860 if (!query_string)
8861 return 0;
8862
8863 qs_end = path + path_l;
8864 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8865 url_param_name, url_param_name_l,
8866 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8867 if (!arg_start)
8868 return 0;
8869
8870 value_start = arg_start + url_param_name_l + 1;
8871 value_end = value_start;
8872
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8873 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8874 value_end++;
8875
8876 *value = value_start;
8877 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]8878 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8879}
8880
8881static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8882smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8883 const struct arg *args, struct sample *smp)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8884{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8885 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8886 struct http_txn *txn = l7;
8887 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8888
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8889 if (!args || args[0].type != ARGT_STR ||
8890 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8891 return 0;
8892
8893 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8894
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8895 if (args[1].type)
8896 delim = *args[1].data.str.str;
8897
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8898 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]8899 args->data.str.str, args->data.str.len,
8900 &smp->data.str.str, &smp->data.str.len,
8901 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8902 return 0;
8903
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]8904 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8905 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8906 return 1;
8907}
8908
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]8909/* Return the signed integer value for the specified url parameter (see url_param
8910 * above).
8911 */
8912static int
8913smp_fetch_url_param_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8914 const struct arg *args, struct sample *smp)
8915{
8916 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp);
8917
8918 if (ret > 0) {
8919 smp->type = SMP_T_UINT;
8920 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8921 }
8922
8923 return ret;
8924}
8925
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8926/* This function is used to validate the arguments passed to any "hdr" fetch
8927 * keyword. These keywords support an optional positive or negative occurrence
8928 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
8929 * is assumed that the types are already the correct ones. Returns 0 on error,
8930 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
8931 * error message in case of error, that the caller is responsible for freeing.
8932 * The initial location must either be freeable or NULL.
8933 */
8934static int val_hdr(struct arg *arg, char **err_msg)
8935{
8936 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8937 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8938 return 0;
8939 }
8940 return 1;
8941}
8942
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8943/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8944/* All supported ACL keywords must be declared here. */
8945/************************************************************************/
8946
8947/* Note: must not be declared <const> as its list will be overwritten.
8948 * Please take care of keeping this list alphabetically sorted.
8949 */
8950static struct acl_kw_list acl_kws = {{ },{
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8951 { "base", acl_parse_str, smp_fetch_base, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8952 { "base_beg", acl_parse_str, smp_fetch_base, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8953 { "base_dir", acl_parse_str, smp_fetch_base, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8954 { "base_dom", acl_parse_str, smp_fetch_base, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8955 { "base_end", acl_parse_str, smp_fetch_base, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8956 { "base_len", acl_parse_int, smp_fetch_base, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8957 { "base_reg", acl_parse_reg, smp_fetch_base, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8958 { "base_sub", acl_parse_str, smp_fetch_base, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
8959
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8960 { "cook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
8961 { "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]8962 { "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]8963 { "cook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8964 { "cook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8965 { "cook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8966 { "cook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8967 { "cook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8968 { "cook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8969 { "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]8970
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8971 { "hdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
8972 { "hdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8973 { "hdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8974 { "hdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8975 { "hdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8976 { "hdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8977 { "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 },
8978 { "hdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8979 { "hdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8980 { "hdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8981 { "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]8982
8983 { "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]8984 { "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]8985 { "http_first_req", acl_parse_nothing, acl_fetch_http_first_req, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
8986
8987 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT, 0 },
8988
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8989 { "path", acl_parse_str, smp_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8990 { "path_beg", acl_parse_str, smp_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8991 { "path_dir", acl_parse_str, smp_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8992 { "path_dom", acl_parse_str, smp_fetch_path, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8993 { "path_end", acl_parse_str, smp_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8994 { "path_len", acl_parse_int, smp_fetch_path, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8995 { "path_reg", acl_parse_reg, smp_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8996 { "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]8997
8998 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
8999 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9000 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, 0 },
9001
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9002 { "scook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
9003 { "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]9004 { "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]9005 { "scook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9006 { "scook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9007 { "scook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9008 { "scook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9009 { "scook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9010 { "scook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9011 { "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]9012
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9013 { "shdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
9014 { "shdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9015 { "shdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
9016 { "shdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9017 { "shdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9018 { "shdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9019 { "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 },
9020 { "shdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9021 { "shdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9022 { "shdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
9023 { "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]9024
9025 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT, 0 },
9026
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9027 { "url", acl_parse_str, smp_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9028 { "url_beg", acl_parse_str, smp_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
9029 { "url_dir", acl_parse_str, smp_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
9030 { "url_dom", acl_parse_str, smp_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
9031 { "url_end", acl_parse_str, smp_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
9032 { "url_ip", acl_parse_ip, smp_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
9033 { "url_len", acl_parse_int, smp_fetch_url, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
9034 { "url_port", acl_parse_int, smp_fetch_url_port, acl_match_int, ACL_USE_L7REQ_VOLATILE, 0 },
9035 { "url_reg", acl_parse_reg, smp_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
9036 { "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]9037
9038 { "urlp", acl_parse_str, smp_fetch_url_param, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
9039 { "urlp_beg", acl_parse_str, smp_fetch_url_param, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9040 { "urlp_dir", acl_parse_str, smp_fetch_url_param, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9041 { "urlp_dom", acl_parse_str, smp_fetch_url_param, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9042 { "urlp_end", acl_parse_str, smp_fetch_url_param, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9043 { "urlp_ip", acl_parse_ip, smp_fetch_url_param, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
9044 { "urlp_len", acl_parse_int, smp_fetch_url_param, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9045 { "urlp_reg", acl_parse_reg, smp_fetch_url_param, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
9046 { "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]9047 { "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]9048
9049 { NULL, NULL, NULL, NULL },
9050}};
9051
9052/************************************************************************/
9053/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9054/************************************************************************/
9055/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9056static struct sample_fetch_kw_list sample_fetch_keywords = {{ },{
Willy Tarreau1b6c00c2012-10-05 22:41:26 +0200[diff] [blame]9057 { "hdr", smp_fetch_hdr, ARG2(1,STR,SINT), val_hdr, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9058 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9059 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9060 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9061 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_CAP_L7|SMP_CAP_REQ },
9062 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_CAP_L7|SMP_CAP_REQ },
9063 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
9064 { "cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ|SMP_CAP_RES },
9065 { "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]9066 { NULL, NULL, 0, 0, 0 },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9067}};
9068
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9069
9070__attribute__((constructor))
9071static void __http_protocol_init(void)
9072{
9073 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9074 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9075}
9076
9077
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]9078/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]9079 * Local variables:
9080 * c-indent-level: 8
9081 * c-basic-offset: 8
9082 * End:
9083 */