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git01.mediatek.com / haproxy / 338a4fc2a88cc9a1e21d1fd327a20555c3bf5f10 / . / src / proto_http.c
blob: 66dc87d0952fccea34b35f9f8e287bea288bb4bc [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>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]51#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]52#include <proto/fd.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]53#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]54#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]55#include <proto/hdr_idx.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]56#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]57#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]58#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]59#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]60#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]61#include <proto/server.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]62#include <proto/session.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]63#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]64#include <proto/task.h>
65
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]66const char HTTP_100[] =
67 "HTTP/1.1 100 Continue\r\n\r\n";
68
69const struct chunk http_100_chunk = {
70 .str = (char *)&HTTP_100,
71 .len = sizeof(HTTP_100)-1
72};
73
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]74/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]75const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]76 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]77 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]78 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]79 "Location: "; /* not terminated since it will be concatenated with the URL */
80
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]81const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]82 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]83 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]84 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]85 "Location: "; /* not terminated since it will be concatenated with the URL */
86
87/* same as 302 except that the browser MUST retry with the GET method */
88const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]89 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]90 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]91 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]92 "Location: "; /* not terminated since it will be concatenated with the URL */
93
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]94/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
95const char *HTTP_401_fmt =
96 "HTTP/1.0 401 Unauthorized\r\n"
97 "Cache-Control: no-cache\r\n"
98 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]99 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]100 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
101 "\r\n"
102 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
103
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]104const char *HTTP_407_fmt =
105 "HTTP/1.0 407 Unauthorized\r\n"
106 "Cache-Control: no-cache\r\n"
107 "Connection: close\r\n"
108 "Content-Type: text/html\r\n"
109 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
110 "\r\n"
111 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
112
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]113
114const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]115 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]116 [HTTP_ERR_400] = 400,
117 [HTTP_ERR_403] = 403,
118 [HTTP_ERR_408] = 408,
119 [HTTP_ERR_500] = 500,
120 [HTTP_ERR_502] = 502,
121 [HTTP_ERR_503] = 503,
122 [HTTP_ERR_504] = 504,
123};
124
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]125static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]126 [HTTP_ERR_200] =
127 "HTTP/1.0 200 OK\r\n"
128 "Cache-Control: no-cache\r\n"
129 "Connection: close\r\n"
130 "Content-Type: text/html\r\n"
131 "\r\n"
132 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
133
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]134 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]135 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]136 "Cache-Control: no-cache\r\n"
137 "Connection: close\r\n"
138 "Content-Type: text/html\r\n"
139 "\r\n"
140 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
141
142 [HTTP_ERR_403] =
143 "HTTP/1.0 403 Forbidden\r\n"
144 "Cache-Control: no-cache\r\n"
145 "Connection: close\r\n"
146 "Content-Type: text/html\r\n"
147 "\r\n"
148 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
149
150 [HTTP_ERR_408] =
151 "HTTP/1.0 408 Request Time-out\r\n"
152 "Cache-Control: no-cache\r\n"
153 "Connection: close\r\n"
154 "Content-Type: text/html\r\n"
155 "\r\n"
156 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
157
158 [HTTP_ERR_500] =
159 "HTTP/1.0 500 Server Error\r\n"
160 "Cache-Control: no-cache\r\n"
161 "Connection: close\r\n"
162 "Content-Type: text/html\r\n"
163 "\r\n"
164 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
165
166 [HTTP_ERR_502] =
167 "HTTP/1.0 502 Bad Gateway\r\n"
168 "Cache-Control: no-cache\r\n"
169 "Connection: close\r\n"
170 "Content-Type: text/html\r\n"
171 "\r\n"
172 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
173
174 [HTTP_ERR_503] =
175 "HTTP/1.0 503 Service Unavailable\r\n"
176 "Cache-Control: no-cache\r\n"
177 "Connection: close\r\n"
178 "Content-Type: text/html\r\n"
179 "\r\n"
180 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
181
182 [HTTP_ERR_504] =
183 "HTTP/1.0 504 Gateway Time-out\r\n"
184 "Cache-Control: no-cache\r\n"
185 "Connection: close\r\n"
186 "Content-Type: text/html\r\n"
187 "\r\n"
188 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
189
190};
191
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]192/* status codes available for the stats admin page (strictly 4 chars length) */
193const char *stat_status_codes[STAT_STATUS_SIZE] = {
194 [STAT_STATUS_DENY] = "DENY",
195 [STAT_STATUS_DONE] = "DONE",
196 [STAT_STATUS_ERRP] = "ERRP",
197 [STAT_STATUS_EXCD] = "EXCD",
198 [STAT_STATUS_NONE] = "NONE",
199 [STAT_STATUS_PART] = "PART",
200 [STAT_STATUS_UNKN] = "UNKN",
201};
202
203
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]204/* We must put the messages here since GCC cannot initialize consts depending
205 * on strlen().
206 */
207struct chunk http_err_chunks[HTTP_ERR_SIZE];
208
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]209#define FD_SETS_ARE_BITFIELDS
210#ifdef FD_SETS_ARE_BITFIELDS
211/*
212 * This map is used with all the FD_* macros to check whether a particular bit
213 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
214 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
215 * byte should be encoded. Be careful to always pass bytes from 0 to 255
216 * exclusively to the macros.
217 */
218fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
219fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
220
221#else
222#error "Check if your OS uses bitfields for fd_sets"
223#endif
224
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]225void init_proto_http()
226{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]227 int i;
228 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]229 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]230
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]231 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
232 if (!http_err_msgs[msg]) {
233 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
234 abort();
235 }
236
237 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
238 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
239 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]240
241 /* initialize the log header encoding map : '{|}"#' should be encoded with
242 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
243 * URL encoding only requires '"', '#' to be encoded as well as non-
244 * printable characters above.
245 */
246 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
247 memset(url_encode_map, 0, sizeof(url_encode_map));
248 for (i = 0; i < 32; i++) {
249 FD_SET(i, hdr_encode_map);
250 FD_SET(i, url_encode_map);
251 }
252 for (i = 127; i < 256; i++) {
253 FD_SET(i, hdr_encode_map);
254 FD_SET(i, url_encode_map);
255 }
256
257 tmp = "\"#{|}";
258 while (*tmp) {
259 FD_SET(*tmp, hdr_encode_map);
260 tmp++;
261 }
262
263 tmp = "\"#";
264 while (*tmp) {
265 FD_SET(*tmp, url_encode_map);
266 tmp++;
267 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]268
269 /* memory allocations */
270 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]271 pool2_capture = create_pool("capture", CAPTURE_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{
392 int size = 0;
David du Colombier7af46052012-05-16 14:16:48 +0200[diff] [blame]393 size += snprintf(trash + size, trashlen - size,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]394 "[%04d] req: p=%d(%d) s=%d bf=%08x an=%08x data=%p size=%d l=%d w=%p r=%p o=%p sm=%d fw=%ld tf=%08x\n",
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]395 line,
396 s->si[0].state, s->si[0].fd, s->txn.req.msg_state, s->req->flags, s->req->analysers,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]397 s->req->buf->data, s->req->buf->size, s->req->l, s->req->w, s->req->r, s->req->buf->p, s->req->buf->o, s->req->to_forward, s->txn.flags);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]398 write(-1, trash, size);
399 size = 0;
David du Colombier7af46052012-05-16 14:16:48 +0200[diff] [blame]400 size += snprintf(trash + size, trashlen - size,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]401 " %04d rep: p=%d(%d) s=%d bf=%08x an=%08x data=%p size=%d l=%d w=%p r=%p o=%p sm=%d fw=%ld\n",
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]402 line,
403 s->si[1].state, s->si[1].fd, s->txn.rsp.msg_state, s->rep->flags, s->rep->analysers,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]404 s->rep->buf->data, s->rep->buf->size, s->rep->l, s->rep->w, s->rep->r, s->rep->buf->p, s->rep->buf->o, s->rep->to_forward);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]405
406 write(-1, trash, size);
407}
408#else
409#define http_silent_debug(l,s) do { } while (0)
410#endif
411
412/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]413 * Adds a header and its CRLF at the tail of the message's buffer, just before
414 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]415 * The header is also automatically added to the index <hdr_idx>, and the end
416 * of headers is automatically adjusted. The number of bytes added is returned
417 * on success, otherwise <0 is returned indicating an error.
418 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]419int 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]420{
421 int bytes, len;
422
423 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]424 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]425 if (!bytes)
426 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]427 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]428 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
429}
430
431/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]432 * Adds a header and its CRLF at the tail of the message's buffer, just before
433 * 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]434 * the buffer is only opened and the space reserved, but nothing is copied.
435 * The header is also automatically added to the index <hdr_idx>, and the end
436 * of headers is automatically adjusted. The number of bytes added is returned
437 * on success, otherwise <0 is returned indicating an error.
438 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]439int http_header_add_tail2(struct http_msg *msg,
440 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]441{
442 int bytes;
443
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]444 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]445 if (!bytes)
446 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]447 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]448 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
449}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]450
451/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]452 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
453 * If so, returns the position of the first non-space character relative to
454 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
455 * to return a pointer to the place after the first space. Returns 0 if the
456 * header name does not match. Checks are case-insensitive.
457 */
458int http_header_match2(const char *hdr, const char *end,
459 const char *name, int len)
460{
461 const char *val;
462
463 if (hdr + len >= end)
464 return 0;
465 if (hdr[len] != ':')
466 return 0;
467 if (strncasecmp(hdr, name, len) != 0)
468 return 0;
469 val = hdr + len + 1;
470 while (val < end && HTTP_IS_SPHT(*val))
471 val++;
472 if ((val >= end) && (len + 2 <= end - hdr))
473 return len + 2; /* we may replace starting from second space */
474 return val - hdr;
475}
476
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]477/* Find the end of the header value contained between <s> and <e>. See RFC2616,
478 * par 2.2 for more information. Note that it requires a valid header to return
479 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]480 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]481char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]482{
483 int quoted, qdpair;
484
485 quoted = qdpair = 0;
486 for (; s < e; s++) {
487 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]488 else if (quoted) {
489 if (*s == '\\') qdpair = 1;
490 else if (*s == '"') quoted = 0;
491 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]492 else if (*s == '"') quoted = 1;
493 else if (*s == ',') return s;
494 }
495 return s;
496}
497
498/* Find the first or next occurrence of header <name> in message buffer <sol>
499 * using headers index <idx>, and return it in the <ctx> structure. This
500 * structure holds everything necessary to use the header and find next
501 * occurrence. If its <idx> member is 0, the header is searched from the
502 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]503 * 1 when it finds a value, and 0 when there is no more. It is designed to work
504 * with headers defined as comma-separated lists. As a special case, if ctx->val
505 * is NULL when searching for a new values of a header, the current header is
506 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]507 */
508int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]509 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]510 struct hdr_ctx *ctx)
511{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]512 char *eol, *sov;
513 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]514
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]515 cur_idx = ctx->idx;
516 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]517 /* We have previously returned a value, let's search
518 * another one on the same line.
519 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]520 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]521 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]522 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]523 eol = sol + idx->v[cur_idx].len;
524
525 if (sov >= eol)
526 /* no more values in this header */
527 goto next_hdr;
528
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]529 /* values remaining for this header, skip the comma but save it
530 * for later use (eg: for header deletion).
531 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]532 sov++;
533 while (sov < eol && http_is_lws[(unsigned char)*sov])
534 sov++;
535
536 goto return_hdr;
537 }
538
539 /* first request for this header */
540 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]541 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]542 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]543 while (cur_idx) {
544 eol = sol + idx->v[cur_idx].len;
545
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]546 if (len == 0) {
547 /* No argument was passed, we want any header.
548 * To achieve this, we simply build a fake request. */
549 while (sol + len < eol && sol[len] != ':')
550 len++;
551 name = sol;
552 }
553
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]554 if ((len < eol - sol) &&
555 (sol[len] == ':') &&
556 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]557 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]558 sov = sol + len + 1;
559 while (sov < eol && http_is_lws[(unsigned char)*sov])
560 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]561
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]562 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]563 ctx->prev = old_idx;
564 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]565 ctx->idx = cur_idx;
566 ctx->val = sov - sol;
567
568 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]569 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]570 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]571 eol--;
572 ctx->tws++;
573 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]574 ctx->vlen = eol - sov;
575 return 1;
576 }
577 next_hdr:
578 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]579 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]580 cur_idx = idx->v[cur_idx].next;
581 }
582 return 0;
583}
584
585int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]586 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]587 struct hdr_ctx *ctx)
588{
589 return http_find_header2(name, strlen(name), sol, idx, ctx);
590}
591
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]592/* Remove one value of a header. This only works on a <ctx> returned by one of
593 * the http_find_header functions. The value is removed, as well as surrounding
594 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]595 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]596 * message <msg>. The new index is returned. If it is zero, it means there is
597 * no more header, so any processing may stop. The ctx is always left in a form
598 * that can be handled by http_find_header2() to find next occurrence.
599 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]600int 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]601{
602 int cur_idx = ctx->idx;
603 char *sol = ctx->line;
604 struct hdr_idx_elem *hdr;
605 int delta, skip_comma;
606
607 if (!cur_idx)
608 return 0;
609
610 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]611 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]612 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]613 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]614 http_msg_move_end(msg, delta);
615 idx->used--;
616 hdr->len = 0; /* unused entry */
617 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]618 if (idx->tail == ctx->idx)
619 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]620 ctx->idx = ctx->prev; /* walk back to the end of previous header */
621 ctx->line -= idx->v[ctx->idx].len + idx->v[cur_idx].cr + 1;
622 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]623 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]624 return ctx->idx;
625 }
626
627 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]628 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
629 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]630 */
631
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]632 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]633 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]634 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]635 NULL, 0);
636 hdr->len += delta;
637 http_msg_move_end(msg, delta);
638 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]639 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]640 return ctx->idx;
641}
642
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]643/* This function handles a server error at the stream interface level. The
644 * stream interface is assumed to be already in a closed state. An optional
645 * message is copied into the input buffer, and an HTTP status code stored.
646 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]647 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]648 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]649static void http_server_error(struct session *t, struct stream_interface *si,
650 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]651{
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]652 channel_auto_read(si->ob);
653 channel_abort(si->ob);
654 channel_auto_close(si->ob);
655 channel_erase(si->ob);
656 channel_auto_close(si->ib);
657 channel_auto_read(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]658 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]659 t->txn.status = status;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]660 bo_inject(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]661 }
662 if (!(t->flags & SN_ERR_MASK))
663 t->flags |= err;
664 if (!(t->flags & SN_FINST_MASK))
665 t->flags |= finst;
666}
667
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]668/* This function returns the appropriate error location for the given session
669 * and message.
670 */
671
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]672struct chunk *http_error_message(struct session *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]673{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]674 if (s->be->errmsg[msgnum].str)
675 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]676 else if (s->fe->errmsg[msgnum].str)
677 return &s->fe->errmsg[msgnum];
678 else
679 return &http_err_chunks[msgnum];
680}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]681
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]682/*
683 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
684 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
685 */
686static http_meth_t find_http_meth(const char *str, const int len)
687{
688 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]689 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]690
691 m = ((unsigned)*str - 'A');
692
693 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]694 for (h = http_methods[m]; h->len > 0; h++) {
695 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]696 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]697 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]698 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]699 };
700 return HTTP_METH_OTHER;
701 }
702 return HTTP_METH_NONE;
703
704}
705
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]706/* Parse the URI from the given transaction (which is assumed to be in request
707 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
708 * It is returned otherwise.
709 */
710static char *
711http_get_path(struct http_txn *txn)
712{
713 char *ptr, *end;
714
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]715 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]716 end = ptr + txn->req.sl.rq.u_l;
717
718 if (ptr >= end)
719 return NULL;
720
721 /* RFC2616, par. 5.1.2 :
722 * Request-URI = "*" | absuri | abspath | authority
723 */
724
725 if (*ptr == '*')
726 return NULL;
727
728 if (isalpha((unsigned char)*ptr)) {
729 /* this is a scheme as described by RFC3986, par. 3.1 */
730 ptr++;
731 while (ptr < end &&
732 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
733 ptr++;
734 /* skip '://' */
735 if (ptr == end || *ptr++ != ':')
736 return NULL;
737 if (ptr == end || *ptr++ != '/')
738 return NULL;
739 if (ptr == end || *ptr++ != '/')
740 return NULL;
741 }
742 /* skip [user[:passwd]@]host[:[port]] */
743
744 while (ptr < end && *ptr != '/')
745 ptr++;
746
747 if (ptr == end)
748 return NULL;
749
750 /* OK, we got the '/' ! */
751 return ptr;
752}
753
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]754/* Returns a 302 for a redirectable request. This may only be called just after
755 * the stream interface has moved to SI_ST_ASS. Unprocessable requests are
756 * left unchanged and will follow normal proxy processing.
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]757 * NOTE: this function is designed to support being called once data are scheduled
758 * for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]759 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]760void perform_http_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]761{
762 struct http_txn *txn;
763 struct chunk rdr;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]764 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]765 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]766 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]767
768 /* 1: create the response header */
769 rdr.len = strlen(HTTP_302);
770 rdr.str = trash;
David du Colombier7af46052012-05-16 14:16:48 +0200[diff] [blame]771 rdr.size = trashlen;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]772 memcpy(rdr.str, HTTP_302, rdr.len);
773
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]774 srv = target_srv(&s->target);
775
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]776 /* 2: add the server's prefix */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]777 if (rdr.len + srv->rdr_len > rdr.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]778 return;
779
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]780 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]781 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
782 memcpy(rdr.str + rdr.len, srv->rdr_pfx, srv->rdr_len);
783 rdr.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]784 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]785
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]786 /* 3: add the request URI. Since it was already forwarded, we need
787 * to temporarily rewind the buffer.
788 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]789 txn = &s->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]790 b_rew(s->req->buf, rewind = s->req->buf->o);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]791
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]792 path = http_get_path(txn);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]793 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]794
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]795 b_adv(s->req->buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]796
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]797 if (!path)
798 return;
799
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]800 if (rdr.len + len > rdr.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]801 return;
802
803 memcpy(rdr.str + rdr.len, path, len);
804 rdr.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]805
806 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
807 memcpy(rdr.str + rdr.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
808 rdr.len += 29;
809 } else {
810 memcpy(rdr.str + rdr.len, "\r\nConnection: close\r\n\r\n", 23);
811 rdr.len += 23;
812 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]813
814 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]815 si_shutr(si);
816 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]817 si->err_type = SI_ET_NONE;
818 si->err_loc = NULL;
819 si->state = SI_ST_CLO;
820
821 /* send the message */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]822 http_server_error(s, si, SN_ERR_PRXCOND, SN_FINST_C, 302, &rdr);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]823
824 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]825 if (srv)
826 srv_inc_sess_ctr(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]827}
828
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]829/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]830 * that the server side is closed. Note that err_type is actually a
831 * bitmask, where almost only aborts may be cumulated with other
832 * values. We consider that aborted operations are more important
833 * than timeouts or errors due to the fact that nobody else in the
834 * logs might explain incomplete retries. All others should avoid
835 * being cumulated. It should normally not be possible to have multiple
836 * aborts at once, but just in case, the first one in sequence is reported.
837 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]838void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]839{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]840 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]841
842 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]843 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]844 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]845 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]846 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]847 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]848 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]849 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]850 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]851 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]852 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]853 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]854 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]855 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]856 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]857 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]858 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]859 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]860 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]861 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]862 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]863}
864
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]865extern const char sess_term_cond[8];
866extern const char sess_fin_state[8];
867extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]868struct pool_head *pool2_requri;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]869struct pool_head *pool2_capture;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]870struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]871
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]872/*
873 * Capture headers from message starting at <som> according to header list
874 * <cap_hdr>, and fill the <idx> structure appropriately.
875 */
876void capture_headers(char *som, struct hdr_idx *idx,
877 char **cap, struct cap_hdr *cap_hdr)
878{
879 char *eol, *sol, *col, *sov;
880 int cur_idx;
881 struct cap_hdr *h;
882 int len;
883
884 sol = som + hdr_idx_first_pos(idx);
885 cur_idx = hdr_idx_first_idx(idx);
886
887 while (cur_idx) {
888 eol = sol + idx->v[cur_idx].len;
889
890 col = sol;
891 while (col < eol && *col != ':')
892 col++;
893
894 sov = col + 1;
895 while (sov < eol && http_is_lws[(unsigned char)*sov])
896 sov++;
897
898 for (h = cap_hdr; h; h = h->next) {
899 if ((h->namelen == col - sol) &&
900 (strncasecmp(sol, h->name, h->namelen) == 0)) {
901 if (cap[h->index] == NULL)
902 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]903 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]904
905 if (cap[h->index] == NULL) {
906 Alert("HTTP capture : out of memory.\n");
907 continue;
908 }
909
910 len = eol - sov;
911 if (len > h->len)
912 len = h->len;
913
914 memcpy(cap[h->index], sov, len);
915 cap[h->index][len]=0;
916 }
917 }
918 sol = eol + idx->v[cur_idx].cr + 1;
919 cur_idx = idx->v[cur_idx].next;
920 }
921}
922
923
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]924/* either we find an LF at <ptr> or we jump to <bad>.
925 */
926#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
927
928/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
929 * otherwise to <http_msg_ood> with <state> set to <st>.
930 */
931#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
932 ptr++; \
933 if (likely(ptr < end)) \
934 goto good; \
935 else { \
936 state = (st); \
937 goto http_msg_ood; \
938 } \
939 } while (0)
940
941
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]942/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]943 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]944 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
945 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
946 * will give undefined results.
947 * Note that it is upon the caller's responsibility to ensure that ptr < end,
948 * and that msg->sol points to the beginning of the response.
949 * If a complete line is found (which implies that at least one CR or LF is
950 * found before <end>, the updated <ptr> is returned, otherwise NULL is
951 * returned indicating an incomplete line (which does not mean that parts have
952 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
953 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
954 * upon next call.
955 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]956 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]957 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
958 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]959 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]960 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]961const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]962 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]963 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]964{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]965 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]966
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]967 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]968 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]969 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]970 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]971 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
972
973 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]974 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]975 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
976 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]977 state = HTTP_MSG_ERROR;
978 break;
979
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]980 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]981 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]982 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]983 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]984 goto http_msg_rpcode;
985 }
986 if (likely(HTTP_IS_SPHT(*ptr)))
987 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
988 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]989 state = HTTP_MSG_ERROR;
990 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]991
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]992 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]993 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]994 if (likely(!HTTP_IS_LWS(*ptr)))
995 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
996
997 if (likely(HTTP_IS_SPHT(*ptr))) {
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 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1000 }
1001
1002 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1003 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1004 http_msg_rsp_reason:
1005 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1006 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1007 msg->sl.st.r_l = 0;
1008 goto http_msg_rpline_eol;
1009
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1010 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1011 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1012 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1013 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1014 goto http_msg_rpreason;
1015 }
1016 if (likely(HTTP_IS_SPHT(*ptr)))
1017 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1018 /* so it's a CR/LF, so there is no reason phrase */
1019 goto http_msg_rsp_reason;
1020
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1021 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1022 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1023 if (likely(!HTTP_IS_CRLF(*ptr)))
1024 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1025 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1026 http_msg_rpline_eol:
1027 /* We have seen the end of line. Note that we do not
1028 * necessarily have the \n yet, but at least we know that we
1029 * have EITHER \r OR \n, otherwise the response would not be
1030 * complete. We can then record the response length and return
1031 * to the caller which will be able to register it.
1032 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1033 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1034 return ptr;
1035
1036#ifdef DEBUG_FULL
1037 default:
1038 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1039 exit(1);
1040#endif
1041 }
1042
1043 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1044 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1045 if (ret_state)
1046 *ret_state = state;
1047 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1048 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1049 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1050}
1051
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1052/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1053 * This function parses a request line between <ptr> and <end>, starting with
1054 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1055 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1056 * will give undefined results.
1057 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1058 * and that msg->sol points to the beginning of the request.
1059 * If a complete line is found (which implies that at least one CR or LF is
1060 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1061 * returned indicating an incomplete line (which does not mean that parts have
1062 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1063 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1064 * upon next call.
1065 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1066 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1067 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1068 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1069 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1070 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1071const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1072 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1073 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1074{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1075 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1076
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1077 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1078 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1079 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1080 if (likely(HTTP_IS_TOKEN(*ptr)))
1081 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
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_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1084 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1085 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1086 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1087
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1088 if (likely(HTTP_IS_CRLF(*ptr))) {
1089 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1090 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1091 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1092 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1093 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1094 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1095 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1096 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1097 msg->sl.rq.v_l = 0;
1098 goto http_msg_rqline_eol;
1099 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1100 state = HTTP_MSG_ERROR;
1101 break;
1102
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1103 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1104 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1105 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1106 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1107 goto http_msg_rquri;
1108 }
1109 if (likely(HTTP_IS_SPHT(*ptr)))
1110 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1111 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1112 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1113
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1114 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1115 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1116 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1117 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1118
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1119 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1120 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1121 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1122 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1123
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1124 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1125 /* non-ASCII chars are forbidden unless option
1126 * accept-invalid-http-request is enabled in the frontend.
1127 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1128 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1129 if (msg->err_pos < -1)
1130 goto invalid_char;
1131 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1132 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1133 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1134 }
1135
1136 if (likely(HTTP_IS_CRLF(*ptr))) {
1137 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1138 goto http_msg_req09_uri_e;
1139 }
1140
1141 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1142 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1143 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1144 state = HTTP_MSG_ERROR;
1145 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1146
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1147 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1148 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1149 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1150 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1151 goto http_msg_rqver;
1152 }
1153 if (likely(HTTP_IS_SPHT(*ptr)))
1154 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1155 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1156 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1157
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1158 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1159 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1160 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1161 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1162
1163 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1164 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1165 http_msg_rqline_eol:
1166 /* We have seen the end of line. Note that we do not
1167 * necessarily have the \n yet, but at least we know that we
1168 * have EITHER \r OR \n, otherwise the request would not be
1169 * complete. We can then record the request length and return
1170 * to the caller which will be able to register it.
1171 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1172 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1173 return ptr;
1174 }
1175
1176 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1177 state = HTTP_MSG_ERROR;
1178 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1179
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1180#ifdef DEBUG_FULL
1181 default:
1182 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1183 exit(1);
1184#endif
1185 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1186
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1187 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1188 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1189 if (ret_state)
1190 *ret_state = state;
1191 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1192 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1193 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1194}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1195
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1196/*
1197 * Returns the data from Authorization header. Function may be called more
1198 * than once so data is stored in txn->auth_data. When no header is found
1199 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
1200 * searching again for something we are unable to find anyway.
1201 */
1202
1203char get_http_auth_buff[BUFSIZE];
1204
1205int
1206get_http_auth(struct session *s)
1207{
1208
1209 struct http_txn *txn = &s->txn;
1210 struct chunk auth_method;
1211 struct hdr_ctx ctx;
1212 char *h, *p;
1213 int len;
1214
1215#ifdef DEBUG_AUTH
1216 printf("Auth for session %p: %d\n", s, txn->auth.method);
1217#endif
1218
1219 if (txn->auth.method == HTTP_AUTH_WRONG)
1220 return 0;
1221
1222 if (txn->auth.method)
1223 return 1;
1224
1225 txn->auth.method = HTTP_AUTH_WRONG;
1226
1227 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1228
1229 if (txn->flags & TX_USE_PX_CONN) {
1230 h = "Proxy-Authorization";
1231 len = strlen(h);
1232 } else {
1233 h = "Authorization";
1234 len = strlen(h);
1235 }
1236
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1237 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]1238 return 0;
1239
1240 h = ctx.line + ctx.val;
1241
1242 p = memchr(h, ' ', ctx.vlen);
1243 if (!p || p == h)
1244 return 0;
1245
1246 chunk_initlen(&auth_method, h, 0, p-h);
1247 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1248
1249 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1250
1251 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
1252 get_http_auth_buff, BUFSIZE - 1);
1253
1254 if (len < 0)
1255 return 0;
1256
1257
1258 get_http_auth_buff[len] = '\0';
1259
1260 p = strchr(get_http_auth_buff, ':');
1261
1262 if (!p)
1263 return 0;
1264
1265 txn->auth.user = get_http_auth_buff;
1266 *p = '\0';
1267 txn->auth.pass = p+1;
1268
1269 txn->auth.method = HTTP_AUTH_BASIC;
1270 return 1;
1271 }
1272
1273 return 0;
1274}
1275
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1276
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1277/*
1278 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1279 * depending on the initial msg->msg_state. The caller is responsible for
1280 * ensuring that the message does not wrap. The function can be preempted
1281 * everywhere when data are missing and recalled at the exact same location
1282 * with no information loss. The message may even be realigned between two
1283 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1284 * 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]1285 * fields. Note that msg->sol will be initialized after completing the first
1286 * state, so that none of the msg pointers has to be initialized prior to the
1287 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1288 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1289void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1290{
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1291 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1292 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1293 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1294
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1295 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1296 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1297 ptr = buf->p + msg->next;
1298 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1299
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1300 if (unlikely(ptr >= end))
1301 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1302
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1303 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1304 /*
1305 * First, states that are specific to the response only.
1306 * We check them first so that request and headers are
1307 * closer to each other (accessed more often).
1308 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1309 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1310 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1311 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1312 /* we have a start of message, but we have to check
1313 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1314 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1315 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1316 if (unlikely(ptr != buf->p)) {
1317 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1318 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1319 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1320 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1321 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1322 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1323 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1324 hdr_idx_init(idx);
1325 state = HTTP_MSG_RPVER;
1326 goto http_msg_rpver;
1327 }
1328
1329 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1330 goto http_msg_invalid;
1331
1332 if (unlikely(*ptr == '\n'))
1333 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1334 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1335 /* stop here */
1336
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1337 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1338 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1339 EXPECT_LF_HERE(ptr, http_msg_invalid);
1340 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1341 /* stop here */
1342
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1343 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1344 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1345 case HTTP_MSG_RPVER_SP:
1346 case HTTP_MSG_RPCODE:
1347 case HTTP_MSG_RPCODE_SP:
1348 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1349 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1350 state, ptr, end,
1351 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1352 if (unlikely(!ptr))
1353 return;
1354
1355 /* we have a full response and we know that we have either a CR
1356 * or an LF at <ptr>.
1357 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1358 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1359
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1360 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1361 if (likely(*ptr == '\r'))
1362 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1363 goto http_msg_rpline_end;
1364
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1365 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1366 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1367 /* msg->sol must point to the first of CR or LF. */
1368 EXPECT_LF_HERE(ptr, http_msg_invalid);
1369 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1370 /* stop here */
1371
1372 /*
1373 * Second, states that are specific to the request only
1374 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1375 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1376 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1377 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1378 /* we have a start of message, but we have to check
1379 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1380 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1381 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1382 if (likely(ptr != buf->p)) {
1383 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1384 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1385 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1386 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1387 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1388 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1389 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1390 state = HTTP_MSG_RQMETH;
1391 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1392 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1393
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1394 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1395 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1396
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1397 if (unlikely(*ptr == '\n'))
1398 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1399 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1400 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1401
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1402 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1403 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1404 EXPECT_LF_HERE(ptr, http_msg_invalid);
1405 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1406 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1407
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1408 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1409 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1410 case HTTP_MSG_RQMETH_SP:
1411 case HTTP_MSG_RQURI:
1412 case HTTP_MSG_RQURI_SP:
1413 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1414 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1415 state, ptr, end,
1416 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1417 if (unlikely(!ptr))
1418 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1419
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1420 /* we have a full request and we know that we have either a CR
1421 * or an LF at <ptr>.
1422 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1423 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1424
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1425 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1426 if (likely(*ptr == '\r'))
1427 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1428 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1429
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1430 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1431 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1432 /* check for HTTP/0.9 request : no version information available.
1433 * msg->sol must point to the first of CR or LF.
1434 */
1435 if (unlikely(msg->sl.rq.v_l == 0))
1436 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1437
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1438 EXPECT_LF_HERE(ptr, http_msg_invalid);
1439 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1440 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1441
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1442 /*
1443 * Common states below
1444 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1445 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1446 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1447 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1448 if (likely(!HTTP_IS_CRLF(*ptr))) {
1449 goto http_msg_hdr_name;
1450 }
1451
1452 if (likely(*ptr == '\r'))
1453 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1454 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1455
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1456 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1457 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1458 /* assumes msg->sol points to the first char */
1459 if (likely(HTTP_IS_TOKEN(*ptr)))
1460 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1461
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1462 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1463 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]1464
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1465 if (likely(msg->err_pos < -1) || *ptr == '\n')
1466 goto http_msg_invalid;
1467
1468 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1469 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1470
1471 /* and we still accept this non-token character */
1472 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1473
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1474 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1475 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1476 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1477 if (likely(HTTP_IS_SPHT(*ptr)))
1478 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]1479
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1480 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1481 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1482
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1483 if (likely(!HTTP_IS_CRLF(*ptr))) {
1484 goto http_msg_hdr_val;
1485 }
1486
1487 if (likely(*ptr == '\r'))
1488 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1489 goto http_msg_hdr_l1_lf;
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_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1492 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1493 EXPECT_LF_HERE(ptr, http_msg_invalid);
1494 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]1495
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1496 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1497 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1498 if (likely(HTTP_IS_SPHT(*ptr))) {
1499 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1500 for (; buf->p + msg->sov < ptr; msg->sov++)
1501 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1502 goto http_msg_hdr_l1_sp;
1503 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1504 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1505 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1506 goto http_msg_complete_header;
1507
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1508 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1509 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1510 /* assumes msg->sol points to the first char, and msg->sov
1511 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1512 */
1513 if (likely(!HTTP_IS_CRLF(*ptr)))
1514 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1515
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1516 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1517 /* Note: we could also copy eol into ->eoh so that we have the
1518 * real header end in case it ends with lots of LWS, but is this
1519 * really needed ?
1520 */
1521 if (likely(*ptr == '\r'))
1522 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1523 goto http_msg_hdr_l2_lf;
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_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1526 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1527 EXPECT_LF_HERE(ptr, http_msg_invalid);
1528 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]1529
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1530 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1531 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1532 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1533 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1534 for (; buf->p + msg->eol < ptr; msg->eol++)
1535 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1536 goto http_msg_hdr_val;
1537 }
1538 http_msg_complete_header:
1539 /*
1540 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1541 * Assumes msg->sol points to the first char, msg->sov points
1542 * to the first character of the value and msg->eol to the
1543 * first CR or LF so we know how the line ends. We insert last
1544 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1545 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1546 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1547 idx, idx->tail) < 0))
1548 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1549
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1550 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1551 if (likely(!HTTP_IS_CRLF(*ptr))) {
1552 goto http_msg_hdr_name;
1553 }
1554
1555 if (likely(*ptr == '\r'))
1556 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1557 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1558
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1559 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1560 http_msg_last_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1561 /* Assumes msg->sol points to the first of either CR or LF */
1562 EXPECT_LF_HERE(ptr, http_msg_invalid);
1563 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1564 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1565 msg->eoh = msg->sol;
1566 msg->sol = 0;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1567 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1568 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1569
1570 case HTTP_MSG_ERROR:
1571 /* this may only happen if we call http_msg_analyser() twice with an error */
1572 break;
1573
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1574#ifdef DEBUG_FULL
1575 default:
1576 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1577 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1578#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1579 }
1580 http_msg_ood:
1581 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1582 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1583 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1584 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1585
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1586 http_msg_invalid:
1587 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1588 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1589 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1590 return;
1591}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1592
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1593/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1594 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1595 * nothing is done and 1 is returned.
1596 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1597static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1598{
1599 int delta;
1600 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1601 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1602
1603 if (msg->sl.rq.v_l != 0)
1604 return 1;
1605
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1606 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1607 delta = 0;
1608
1609 if (msg->sl.rq.u_l == 0) {
1610 /* if no URI was set, add "/" */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1611 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " /", 2);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1612 cur_end += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1613 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1614 }
1615 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1616 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]1617 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1618 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1619 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1620 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1621 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1622 NULL, NULL);
1623 if (unlikely(!cur_end))
1624 return 0;
1625
1626 /* we have a full HTTP/1.0 request now and we know that
1627 * we have either a CR or an LF at <ptr>.
1628 */
1629 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1630 return 1;
1631}
1632
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1633/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1634 * and "keep-alive" values. If we already know that some headers may safely
1635 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1636 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1637 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
1638 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1639 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1640 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1641 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1642 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1643void 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]1644{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1645 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1646 const char *hdr_val = "Connection";
1647 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1648
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1649 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1650 return;
1651
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1652 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1653 hdr_val = "Proxy-Connection";
1654 hdr_len = 16;
1655 }
1656
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1657 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1658 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1659 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]1660 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1661 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1662 if (to_del & 2)
1663 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1664 else
1665 txn->flags |= TX_CON_KAL_SET;
1666 }
1667 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1668 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1669 if (to_del & 1)
1670 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1671 else
1672 txn->flags |= TX_CON_CLO_SET;
1673 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1674 }
1675
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1676 txn->flags |= TX_HDR_CONN_PRS;
1677 return;
1678}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1679
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1680/* Apply desired changes on the Connection: header. Values may be removed and/or
1681 * added depending on the <wanted> flags, which are exclusively composed of
1682 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1683 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1684 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1685void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1686{
1687 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1688 const char *hdr_val = "Connection";
1689 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1690
1691 ctx.idx = 0;
1692
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1693
1694 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1695 hdr_val = "Proxy-Connection";
1696 hdr_len = 16;
1697 }
1698
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1699 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1700 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1701 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1702 if (wanted & TX_CON_KAL_SET)
1703 txn->flags |= TX_CON_KAL_SET;
1704 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1705 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1706 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1707 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1708 if (wanted & TX_CON_CLO_SET)
1709 txn->flags |= TX_CON_CLO_SET;
1710 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1711 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1712 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1713 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1714
1715 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1716 return;
1717
1718 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1719 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1720 hdr_val = "Connection: close";
1721 hdr_len = 17;
1722 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1723 hdr_val = "Proxy-Connection: close";
1724 hdr_len = 23;
1725 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1726 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1727 }
1728
1729 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1730 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1731 hdr_val = "Connection: keep-alive";
1732 hdr_len = 22;
1733 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1734 hdr_val = "Proxy-Connection: keep-alive";
1735 hdr_len = 28;
1736 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1737 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1738 }
1739 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1740}
1741
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1742/* Parse the chunk size at msg->next. Once done, it adjusts ->next to point to the
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1743 * first byte of body, and increments msg->sov by the number of bytes parsed,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1744 * so that we know we can forward between ->sol and ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1745 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1746 * Note: this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1747 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1748int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1749{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1750 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1751 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1752 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1753 const char *end = buf->data + buf->size;
1754 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1755 unsigned int chunk = 0;
1756
1757 /* The chunk size is in the following form, though we are only
1758 * interested in the size and CRLF :
1759 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1760 */
1761 while (1) {
1762 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1763 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1764 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1765 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1766 if (c < 0) /* not a hex digit anymore */
1767 break;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1768 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1769 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1770 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1771 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1772 chunk = (chunk << 4) + c;
1773 }
1774
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1775 /* empty size not allowed */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1776 if (ptr == ptr_old)
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1777 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1778
1779 while (http_is_spht[(unsigned char)*ptr]) {
1780 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1781 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1782 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1783 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1784 }
1785
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1786 /* Up to there, we know that at least one byte is present at *ptr. Check
1787 * for the end of chunk size.
1788 */
1789 while (1) {
1790 if (likely(HTTP_IS_CRLF(*ptr))) {
1791 /* we now have a CR or an LF at ptr */
1792 if (likely(*ptr == '\r')) {
1793 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1794 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1795 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1796 return 0;
1797 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1798
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1799 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1800 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1801 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1802 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1803 /* done */
1804 break;
1805 }
1806 else if (*ptr == ';') {
1807 /* chunk extension, ends at next CRLF */
1808 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1809 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1810 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1811 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1812
1813 while (!HTTP_IS_CRLF(*ptr)) {
1814 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1815 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1816 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1817 return 0;
1818 }
1819 /* we have a CRLF now, loop above */
1820 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1821 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1822 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1823 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1824 }
1825
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1826 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1827 * which may or may not be present. We save that into ->next and
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1828 * ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1829 */
Willy Tarreaub8ffd372012-09-27 15:08:56 +0200[diff] [blame]1830 if (ptr < ptr_old)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1831 msg->sov += buf->size;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1832 msg->sov += ptr - ptr_old;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1833 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]1834 msg->chunk_len = chunk;
1835 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1836 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1837 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1838 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1839 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1840 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1841}
1842
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1843/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1844 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1845 * the trailers is found, it is automatically scheduled to be forwarded,
1846 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
1847 * If not enough data are available, the function does not change anything
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1848 * except maybe msg->next and msg->sov if it could parse some lines, and returns
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1849 * zero. If a parse error is encountered, the function returns < 0 and does not
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1850 * change anything except maybe msg->next and msg->sov. Note that the message
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1851 * must already be in HTTP_MSG_TRAILERS state before calling this function,
1852 * which implies that all non-trailers data have already been scheduled for
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1853 * forwarding, and that the difference between msg->sol and msg->sov exactly
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1854 * matches the length of trailers already parsed and not forwarded. It is also
1855 * important to note that this function is designed to be able to parse wrapped
1856 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1857 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1858int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1859{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1860 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1861
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1862 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1863 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1864 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1865 const char *ptr = b_ptr(buf, msg->next);
1866 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1867 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1868
1869 /* scan current line and stop at LF or CRLF */
1870 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1871 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1872 return 0;
1873
1874 if (*ptr == '\n') {
1875 if (!p1)
1876 p1 = ptr;
1877 p2 = ptr;
1878 break;
1879 }
1880
1881 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1882 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1883 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1884 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1885 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1886 p1 = ptr;
1887 }
1888
1889 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1890 if (ptr >= buf->data + buf->size)
1891 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1892 }
1893
1894 /* after LF; point to beginning of next line */
1895 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1896 if (p2 >= buf->data + buf->size)
1897 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1898
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1899 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1900 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1901 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1902
1903 /* schedule this line for forwarding */
1904 msg->sov += bytes;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1905 if (msg->sov >= buf->size)
1906 msg->sov -= buf->size;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1907
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1908 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1909 /* LF/CRLF at beginning of line => end of trailers at p2.
1910 * Everything was scheduled for forwarding, there's nothing
1911 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]1912 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1913 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1914 msg->msg_state = HTTP_MSG_DONE;
1915 return 1;
1916 }
1917 /* OK, next line then */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1918 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1919 }
1920}
1921
1922/* This function may be called only in HTTP_MSG_DATA_CRLF. It reads the CRLF or
1923 * a possible LF alone at the end of a chunk. It automatically adjusts msg->sov,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1924 * ->sol, ->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1925 * Note that the caller must ensure that ->p points to the first byte to parse.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1926 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
1927 * not enough data are available, the function does not change anything and
1928 * returns zero. If a parse error is encountered, the function returns < 0 and
1929 * does not change anything. Note: this function is designed to parse wrapped
1930 * CRLF at the end of the buffer.
1931 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1932int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1933{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1934 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1935 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1936 int bytes;
1937
1938 /* NB: we'll check data availabilty at the end. It's not a
1939 * problem because whatever we match first will be checked
1940 * against the correct length.
1941 */
1942 bytes = 1;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1943 ptr = buf->p;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1944 if (*ptr == '\r') {
1945 bytes++;
1946 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1947 if (ptr >= buf->data + buf->size)
1948 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1949 }
1950
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1951 if (bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1952 return 0;
1953
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1954 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1955 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1956 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1957 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1958
1959 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1960 if (ptr >= buf->data + buf->size)
1961 ptr = buf->data;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1962 /* prepare the CRLF to be forwarded (between ->sol and ->sov) */
1963 msg->sol = 0;
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1964 msg->sov = msg->next = bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1965 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
1966 return 1;
1967}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1968
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1969/* This stream analyser waits for a complete HTTP request. It returns 1 if the
1970 * processing can continue on next analysers, or zero if it either needs more
1971 * data or wants to immediately abort the request (eg: timeout, error, ...). It
1972 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
1973 * when it has nothing left to do, and may remove any analyser when it wants to
1974 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1975 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]1976int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1977{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1978 /*
1979 * We will parse the partial (or complete) lines.
1980 * We will check the request syntax, and also join multi-line
1981 * headers. An index of all the lines will be elaborated while
1982 * parsing.
1983 *
1984 * For the parsing, we use a 28 states FSM.
1985 *
1986 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1987 * req->buf->p = beginning of request
1988 * req->buf->p + msg->eoh = end of processed headers / start of current one
1989 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1990 * msg->eol = end of current header or line (LF or CRLF)
1991 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1992 *
1993 * At end of parsing, we may perform a capture of the error (if any), and
1994 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
1995 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
1996 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1997 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1998
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1999 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2000 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2001 struct http_txn *txn = &s->txn;
2002 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2003 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2004
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2005 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]2006 now_ms, __FUNCTION__,
2007 s,
2008 req,
2009 req->rex, req->wex,
2010 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2011 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2012 req->analysers);
2013
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2014 /* we're speaking HTTP here, so let's speak HTTP to the client */
2015 s->srv_error = http_return_srv_error;
2016
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2017 /* There's a protected area at the end of the buffer for rewriting
2018 * purposes. We don't want to start to parse the request if the
2019 * protected area is affected, because we may have to move processed
2020 * data later, which is much more complicated.
2021 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2022 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2023 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2024 unlikely(channel_full(req) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2025 bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2026 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite)) {
2027 if (req->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2028 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2029 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2030 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2031 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2032 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2033 return 0;
2034 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2035 if (bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2036 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite)
2037 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2038 }
2039
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2040 /* Note that we have the same problem with the response ; we
2041 * may want to send a redirect, error or anything which requires
2042 * some spare space. So we'll ensure that we have at least
2043 * maxrewrite bytes available in the response buffer before
2044 * processing that one. This will only affect pipelined
2045 * keep-alive requests.
2046 */
2047 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]2048 unlikely(channel_full(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2049 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2050 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2051 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2052 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]2053 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2054 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2055 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2056 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2057 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2058 return 0;
2059 }
2060 }
2061
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2062 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2063 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2064 }
2065
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2066 /* 1: we might have to print this header in debug mode */
2067 if (unlikely((global.mode & MODE_DEBUG) &&
2068 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2069 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2070 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2071
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2072 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2073 /* this is a bit complex : in case of error on the request line,
2074 * we know that rq.l is still zero, so we display only the part
2075 * up to the end of the line (truncated by debug_hdr).
2076 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2077 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2078 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2079
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2080 sol += hdr_idx_first_pos(&txn->hdr_idx);
2081 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2082
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2083 while (cur_idx) {
2084 eol = sol + txn->hdr_idx.v[cur_idx].len;
2085 debug_hdr("clihdr", s, sol, eol);
2086 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2087 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2088 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2089 }
2090
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2091
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2092 /*
2093 * Now we quickly check if we have found a full valid request.
2094 * If not so, we check the FD and buffer states before leaving.
2095 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2096 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2097 * requests are checked first. When waiting for a second request
2098 * on a keep-alive session, if we encounter and error, close, t/o,
2099 * we note the error in the session flags but don't set any state.
2100 * Since the error will be noted there, it will not be counted by
2101 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2102 * Last, we may increase some tracked counters' http request errors on
2103 * the cases that are deliberately the client's fault. For instance,
2104 * a timeout or connection reset is not counted as an error. However
2105 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2106 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2107
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2108 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2109 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2110 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2111 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2112 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2113 session_inc_http_req_ctr(s);
2114 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2115 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2116 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2117 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2118
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2119 /* 1: Since we are in header mode, if there's no space
2120 * left for headers, we won't be able to free more
2121 * later, so the session will never terminate. We
2122 * must terminate it now.
2123 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2124 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2125 /* FIXME: check if URI is set and return Status
2126 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2127 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2128 session_inc_http_req_ctr(s);
2129 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2130 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2131 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2132 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2133 goto return_bad_req;
2134 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2135
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2136 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2137 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2138 if (!(s->flags & SN_ERR_MASK))
2139 s->flags |= SN_ERR_CLICL;
2140
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2141 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2142 goto failed_keep_alive;
2143
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2144 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2145 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2146 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]2147 session_inc_http_err_ctr(s);
2148 }
2149
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2150 msg->msg_state = HTTP_MSG_ERROR;
2151 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2152
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2153 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2154 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2155 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2156 if (s->listener->counters)
2157 s->listener->counters->failed_req++;
2158
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2159 if (!(s->flags & SN_FINST_MASK))
2160 s->flags |= SN_FINST_R;
2161 return 0;
2162 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2163
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2164 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2165 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]2166 if (!(s->flags & SN_ERR_MASK))
2167 s->flags |= SN_ERR_CLITO;
2168
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2169 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2170 goto failed_keep_alive;
2171
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2172 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2173 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2174 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]2175 session_inc_http_err_ctr(s);
2176 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2177 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2178 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2179 msg->msg_state = HTTP_MSG_ERROR;
2180 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2181
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2182 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2183 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2184 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2185 if (s->listener->counters)
2186 s->listener->counters->failed_req++;
2187
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2188 if (!(s->flags & SN_FINST_MASK))
2189 s->flags |= SN_FINST_R;
2190 return 0;
2191 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2192
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2193 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2194 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2195 if (!(s->flags & SN_ERR_MASK))
2196 s->flags |= SN_ERR_CLICL;
2197
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2198 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2199 goto failed_keep_alive;
2200
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2201 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2202 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]2203 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2204 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2205 msg->msg_state = HTTP_MSG_ERROR;
2206 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2207
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2208 session_inc_http_err_ctr(s);
2209 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2210 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2211 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2212 if (s->listener->counters)
2213 s->listener->counters->failed_req++;
2214
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2215 if (!(s->flags & SN_FINST_MASK))
2216 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2217 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2218 }
2219
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2220 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2221 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2222 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2223#ifdef TCP_QUICKACK
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2224 if (s->listener->options & LI_O_NOQUICKACK && req->buf->i) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2225 /* We need more data, we have to re-enable quick-ack in case we
2226 * previously disabled it, otherwise we might cause the client
2227 * to delay next data.
2228 */
Willy Tarreaufb7508a2012-05-21 16:47:54 +0200[diff] [blame]2229 setsockopt(si_fd(&s->si[0]), IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2230 }
2231#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2232
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2233 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2234 /* If the client starts to talk, let's fall back to
2235 * request timeout processing.
2236 */
2237 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2238 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2239 }
2240
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2241 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2242 if (!tick_isset(req->analyse_exp)) {
2243 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2244 (txn->flags & TX_WAIT_NEXT_RQ) &&
2245 tick_isset(s->be->timeout.httpka))
2246 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2247 else
2248 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2249 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2250
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2251 /* we're not ready yet */
2252 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2253
2254 failed_keep_alive:
2255 /* Here we process low-level errors for keep-alive requests. In
2256 * short, if the request is not the first one and it experiences
2257 * a timeout, read error or shutdown, we just silently close so
2258 * that the client can try again.
2259 */
2260 txn->status = 0;
2261 msg->msg_state = HTTP_MSG_RQBEFORE;
2262 req->analysers = 0;
2263 s->logs.logwait = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2264 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2265 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2266 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2267 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2268
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2269 /* OK now we have a complete HTTP request with indexed headers. Let's
2270 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2271 * 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]2272 * 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]2273 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2274 * byte after the last LF. msg->sov points to the first byte of data.
2275 * msg->eol cannot be trusted because it may have been left uninitialized
2276 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2277 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2278
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2279 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2280 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2281
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2282 if (txn->flags & TX_WAIT_NEXT_RQ) {
2283 /* kill the pending keep-alive timeout */
2284 txn->flags &= ~TX_WAIT_NEXT_RQ;
2285 req->analyse_exp = TICK_ETERNITY;
2286 }
2287
2288
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2289 /* Maybe we found in invalid header name while we were configured not
2290 * to block on that, so we have to capture it now.
2291 */
2292 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2293 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]2294
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2295 /*
2296 * 1: identify the method
2297 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2298 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2299
2300 /* we can make use of server redirect on GET and HEAD */
2301 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2302 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2303
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2304 /*
2305 * 2: check if the URI matches the monitor_uri.
2306 * We have to do this for every request which gets in, because
2307 * the monitor-uri is defined by the frontend.
2308 */
2309 if (unlikely((s->fe->monitor_uri_len != 0) &&
2310 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2311 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2312 s->fe->monitor_uri,
2313 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2314 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2315 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2316 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2317 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2318
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2319 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2320 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2321
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2322 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2323 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2324 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]2325
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2326 ret = acl_pass(ret);
2327 if (cond->pol == ACL_COND_UNLESS)
2328 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2329
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2330 if (ret) {
2331 /* we fail this request, let's return 503 service unavail */
2332 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2333 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2334 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2335 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2336 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2337
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2338 /* nothing to fail, let's reply normaly */
2339 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2340 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2341 goto return_prx_cond;
2342 }
2343
2344 /*
2345 * 3: Maybe we have to copy the original REQURI for the logs ?
2346 * Note: we cannot log anymore if the request has been
2347 * classified as invalid.
2348 */
2349 if (unlikely(s->logs.logwait & LW_REQ)) {
2350 /* we have a complete HTTP request that we must log */
2351 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2352 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2353
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2354 if (urilen >= REQURI_LEN)
2355 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2356 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2357 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2358
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2359 if (!(s->logs.logwait &= ~LW_REQ))
2360 s->do_log(s);
2361 } else {
2362 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2363 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2364 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2365
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]2366 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
2367 s->unique_id = pool_alloc2(pool2_uniqueid);
2368 }
2369
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2370 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2371 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2372 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2373
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2374 /* ... and check if the request is HTTP/1.1 or above */
2375 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2376 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2377 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2378 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2379 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2380
2381 /* "connection" has not been parsed yet */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2382 txn->flags &= ~(TX_HDR_CONN_PRS | TX_HDR_CONN_CLO | TX_HDR_CONN_KAL);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2383
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2384 /* if the frontend has "option http-use-proxy-header", we'll check if
2385 * we have what looks like a proxied connection instead of a connection,
2386 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2387 * Note that this is *not* RFC-compliant, however browsers and proxies
2388 * happen to do that despite being non-standard :-(
2389 * We consider that a request not beginning with either '/' or '*' is
2390 * a proxied connection, which covers both "scheme://location" and
2391 * CONNECT ip:port.
2392 */
2393 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2394 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2395 txn->flags |= TX_USE_PX_CONN;
2396
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2397 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2398 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2399
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2400 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2401 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2402 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2403 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2404
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2405 /* 6: determine the transfer-length.
2406 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2407 * the presence of a message-body in a REQUEST and its transfer length
2408 * must be determined that way (in order of precedence) :
2409 * 1. The presence of a message-body in a request is signaled by the
2410 * inclusion of a Content-Length or Transfer-Encoding header field
2411 * in the request's header fields. When a request message contains
2412 * both a message-body of non-zero length and a method that does
2413 * not define any semantics for that request message-body, then an
2414 * origin server SHOULD either ignore the message-body or respond
2415 * with an appropriate error message (e.g., 413). A proxy or
2416 * gateway, when presented the same request, SHOULD either forward
2417 * the request inbound with the message- body or ignore the
2418 * message-body when determining a response.
2419 *
2420 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2421 * and the "chunked" transfer-coding (Section 6.2) is used, the
2422 * transfer-length is defined by the use of this transfer-coding.
2423 * If a Transfer-Encoding header field is present and the "chunked"
2424 * transfer-coding is not present, the transfer-length is defined
2425 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2426 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2427 * 3. If a Content-Length header field is present, its decimal value in
2428 * OCTETs represents both the entity-length and the transfer-length.
2429 * If a message is received with both a Transfer-Encoding header
2430 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2431 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2432 * 4. By the server closing the connection. (Closing the connection
2433 * cannot be used to indicate the end of a request body, since that
2434 * would leave no possibility for the server to send back a response.)
2435 *
2436 * Whenever a transfer-coding is applied to a message-body, the set of
2437 * transfer-codings MUST include "chunked", unless the message indicates
2438 * it is terminated by closing the connection. When the "chunked"
2439 * transfer-coding is used, it MUST be the last transfer-coding applied
2440 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2441 */
2442
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2443 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2444 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2445 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2446 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2447 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2448 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2449 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2450 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2451 /* bad transfer-encoding (chunked followed by something else) */
2452 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2453 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2454 break;
2455 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2456 }
2457
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2458 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2459 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2460 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2461 signed long long cl;
2462
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2463 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2464 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2465 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2466 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2467
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2468 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2469 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2470 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2471 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2472
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2473 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2474 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2475 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2476 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2477
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2478 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2479 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2480 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2481 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2482
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2483 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2484 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2485 }
2486
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2487 /* bodyless requests have a known length */
2488 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2489 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2490
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2491 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2492 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2493 req->analyse_exp = TICK_ETERNITY;
2494 return 1;
2495
2496 return_bad_req:
2497 /* We centralize bad requests processing here */
2498 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2499 /* we detected a parsing error. We want to archive this request
2500 * in the dedicated proxy area for later troubleshooting.
2501 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2502 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]2503 }
2504
2505 txn->req.msg_state = HTTP_MSG_ERROR;
2506 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2507 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2508
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2509 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2510 if (s->listener->counters)
2511 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2512
2513 return_prx_cond:
2514 if (!(s->flags & SN_ERR_MASK))
2515 s->flags |= SN_ERR_PRXCOND;
2516 if (!(s->flags & SN_FINST_MASK))
2517 s->flags |= SN_FINST_R;
2518
2519 req->analysers = 0;
2520 req->analyse_exp = TICK_ETERNITY;
2521 return 0;
2522}
2523
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2524/* We reached the stats page through a POST request.
2525 * Parse the posted data and enable/disable servers if necessary.
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2526 * Returns 1 if request was parsed or zero if it needs more data.
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2527 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2528int 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]2529{
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2530 struct proxy *px = NULL;
2531 struct server *sv = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2532
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2533 char key[LINESIZE];
2534 int action = ST_ADM_ACTION_NONE;
2535 int reprocess = 0;
2536
2537 int total_servers = 0;
2538 int altered_servers = 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2539
2540 char *first_param, *cur_param, *next_param, *end_params;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]2541 char *st_cur_param = NULL;
2542 char *st_next_param = NULL;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2543
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2544 first_param = req->buf->p + txn->req.eoh + 2;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2545 end_params = first_param + txn->req.body_len;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2546
2547 cur_param = next_param = end_params;
2548
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2549 if (end_params >= req->buf->data + req->buf->size - global.tune.maxrewrite) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2550 /* Prevent buffer overflow */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2551 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2552 return 1;
2553 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2554 else if (end_params > req->buf->p + req->buf->i) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2555 /* we need more data */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2556 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2557 return 0;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2558 }
2559
2560 *end_params = '\0';
2561
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2562 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2563
2564 /*
2565 * Parse the parameters in reverse order to only store the last value.
2566 * From the html form, the backend and the action are at the end.
2567 */
2568 while (cur_param > first_param) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2569 char *value;
2570 int poffset, plen;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2571
2572 cur_param--;
2573 if ((*cur_param == '&') || (cur_param == first_param)) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2574 reprocess_servers:
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2575 /* Parse the key */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2576 poffset = (cur_param != first_param ? 1 : 0);
2577 plen = next_param - cur_param + (cur_param == first_param ? 1 : 0);
2578 if ((plen > 0) && (plen <= sizeof(key))) {
2579 strncpy(key, cur_param + poffset, plen);
2580 key[plen - 1] = '\0';
2581 } else {
2582 si->applet.ctx.stats.st_code = STAT_STATUS_EXCD;
2583 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2584 }
2585
2586 /* Parse the value */
2587 value = key;
2588 while (*value != '\0' && *value != '=') {
2589 value++;
2590 }
2591 if (*value == '=') {
2592 /* Ok, a value is found, we can mark the end of the key */
2593 *value++ = '\0';
2594 }
2595
Willy Tarreaubf9c2fc2011-05-31 18:06:18 +0200[diff] [blame]2596 if (!url_decode(key) || !url_decode(value))
2597 break;
2598
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2599 /* Now we can check the key to see what to do */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2600 if (!px && (strcmp(key, "b") == 0)) {
2601 if ((px = findproxy(value, PR_CAP_BE)) == NULL) {
2602 /* the backend name is unknown or ambiguous (duplicate names) */
2603 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2604 goto out;
2605 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2606 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2607 else if (!action && (strcmp(key, "action") == 0)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2608 if (strcmp(value, "disable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2609 action = ST_ADM_ACTION_DISABLE;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2610 }
2611 else if (strcmp(value, "enable") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2612 action = ST_ADM_ACTION_ENABLE;
2613 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2614 else if (strcmp(value, "stop") == 0) {
2615 action = ST_ADM_ACTION_STOP;
2616 }
2617 else if (strcmp(value, "start") == 0) {
2618 action = ST_ADM_ACTION_START;
2619 }
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2620 else if (strcmp(value, "shutdown") == 0) {
2621 action = ST_ADM_ACTION_SHUTDOWN;
2622 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2623 else {
2624 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2625 goto out;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2626 }
2627 }
2628 else if (strcmp(key, "s") == 0) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2629 if (!(px && action)) {
2630 /*
2631 * Indicates that we'll need to reprocess the parameters
2632 * as soon as backend and action are known
2633 */
2634 if (!reprocess) {
2635 st_cur_param = cur_param;
2636 st_next_param = next_param;
2637 }
2638 reprocess = 1;
2639 }
2640 else if ((sv = findserver(px, value)) != NULL) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2641 switch (action) {
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2642 case ST_ADM_ACTION_DISABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2643 if ((px->state != PR_STSTOPPED) && !(sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2644 /* Not already in maintenance, we can change the server state */
2645 sv->state |= SRV_MAINTAIN;
2646 set_server_down(sv);
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2647 altered_servers++;
2648 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2649 }
2650 break;
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2651 case ST_ADM_ACTION_ENABLE:
Cyril Bonté1e2a1702011-03-03 21:05:17 +0100[diff] [blame]2652 if ((px->state != PR_STSTOPPED) && (sv->state & SRV_MAINTAIN)) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2653 /* Already in maintenance, we can change the server state */
2654 set_server_up(sv);
Willy Tarreau70461302010-10-22 14:39:02 +0200[diff] [blame]2655 sv->health = sv->rise; /* up, but will fall down at first failure */
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2656 altered_servers++;
2657 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2658 }
Willy Tarreaud7282242012-06-04 00:22:44 +0200[diff] [blame]2659 break;
2660 case ST_ADM_ACTION_STOP:
2661 case ST_ADM_ACTION_START:
2662 if (action == ST_ADM_ACTION_START)
2663 sv->uweight = sv->iweight;
2664 else
2665 sv->uweight = 0;
2666
2667 if (px->lbprm.algo & BE_LB_PROP_DYN) {
2668 /* we must take care of not pushing the server to full throttle during slow starts */
2669 if ((sv->state & SRV_WARMINGUP) && (px->lbprm.algo & BE_LB_PROP_DYN))
2670 sv->eweight = (BE_WEIGHT_SCALE * (now.tv_sec - sv->last_change) + sv->slowstart - 1) / sv->slowstart;
2671 else
2672 sv->eweight = BE_WEIGHT_SCALE;
2673 sv->eweight *= sv->uweight;
2674 } else {
2675 sv->eweight = sv->uweight;
2676 }
2677
2678 /* static LB algorithms are a bit harder to update */
2679 if (px->lbprm.update_server_eweight)
2680 px->lbprm.update_server_eweight(sv);
2681 else if (sv->eweight) {
2682 if (px->lbprm.set_server_status_up)
2683 px->lbprm.set_server_status_up(sv);
2684 }
2685 else {
2686 if (px->lbprm.set_server_status_down)
2687 px->lbprm.set_server_status_down(sv);
2688 }
2689 altered_servers++;
2690 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2691 break;
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2692 case ST_ADM_ACTION_SHUTDOWN:
2693 if (px->state != PR_STSTOPPED) {
2694 struct session *sess, *sess_bck;
2695
2696 list_for_each_entry_safe(sess, sess_bck, &sv->actconns, by_srv)
2697 if (sess->srv_conn == sv)
2698 session_shutdown(sess, SN_ERR_KILLED);
2699
2700 altered_servers++;
2701 total_servers++;
2702 }
2703 break;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2704 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2705 } else {
2706 /* the server name is unknown or ambiguous (duplicate names) */
2707 total_servers++;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2708 }
2709 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2710 if (reprocess && px && action) {
2711 /* Now, we know the backend and the action chosen by the user.
2712 * We can safely restart from the first server parameter
2713 * to reprocess them
2714 */
2715 cur_param = st_cur_param;
2716 next_param = st_next_param;
2717 reprocess = 0;
2718 goto reprocess_servers;
2719 }
2720
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2721 next_param = cur_param;
2722 }
2723 }
Cyril Bontécf8d9ae2012-04-04 12:57:18 +0200[diff] [blame]2724
2725 if (total_servers == 0) {
2726 si->applet.ctx.stats.st_code = STAT_STATUS_NONE;
2727 }
2728 else if (altered_servers == 0) {
2729 si->applet.ctx.stats.st_code = STAT_STATUS_ERRP;
2730 }
2731 else if (altered_servers == total_servers) {
2732 si->applet.ctx.stats.st_code = STAT_STATUS_DONE;
2733 }
2734 else {
2735 si->applet.ctx.stats.st_code = STAT_STATUS_PART;
2736 }
2737 out:
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]2738 return 1;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]2739}
2740
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2741/* returns a pointer to the first rule which forbids access (deny or http_auth),
2742 * or NULL if everything's OK.
2743 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2744static inline struct http_req_rule *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2745http_check_access_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
2746{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2747 struct http_req_rule *rule;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2748
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2749 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2750 int ret = 1;
2751
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2752 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2753 continue;
2754
2755 /* check condition, but only if attached */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2756 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2757 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]2758 ret = acl_pass(ret);
2759
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2760 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2761 ret = !ret;
2762 }
2763
2764 if (ret) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2765 if (rule->action == HTTP_REQ_ACT_ALLOW)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2766 return NULL; /* no problem */
2767 else
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2768 return rule; /* most likely a deny or auth rule */
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2769 }
2770 }
2771 return NULL;
2772}
2773
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2774/* This stream analyser runs all HTTP request processing which is common to
2775 * frontends and backends, which means blocking ACLs, filters, connection-close,
2776 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2777 * 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]2778 * either needs more data or wants to immediately abort the request (eg: deny,
2779 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2780 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2781int 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]2782{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2783 struct http_txn *txn = &s->txn;
2784 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2785 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2786 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2787 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]2788 struct cond_wordlist *wl;
Simon Horman70735c92011-06-07 11:07:50 +0900[diff] [blame]2789 int do_stats;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2790
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2791 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2792 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2793 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2794 return 0;
2795 }
2796
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2797 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2798 req->analyse_exp = TICK_ETERNITY;
2799
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2800 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]2801 now_ms, __FUNCTION__,
2802 s,
2803 req,
2804 req->rex, req->wex,
2805 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2806 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2807 req->analysers);
2808
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2809 /* first check whether we have some ACLs set to block this request */
2810 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2811 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]2812
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2813 ret = acl_pass(ret);
2814 if (cond->pol == ACL_COND_UNLESS)
2815 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]2816
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2817 if (ret) {
2818 txn->status = 403;
2819 /* let's log the request time */
2820 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2821 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2822 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2823 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2824 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2825 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2826
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2827 /* evaluate http-request rules */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2828 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]2829
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2830 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2831 if (!http_req_last_rule) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2832 do_stats = stats_check_uri(s->rep->prod, txn, px);
2833 if (do_stats)
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2834 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]2835 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2836 else
2837 do_stats = 0;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2838
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2839 /* return a 403 if either rule has blocked */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2840 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]2841 txn->status = 403;
2842 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2843 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2844 session_inc_http_err_ctr(s);
Willy Tarreau6da0f6d2011-01-06 18:19:50 +0100[diff] [blame]2845 s->fe->fe_counters.denied_req++;
2846 if (an_bit == AN_REQ_HTTP_PROCESS_BE)
2847 s->be->be_counters.denied_req++;
2848 if (s->listener->counters)
2849 s->listener->counters->denied_req++;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2850 goto return_prx_cond;
2851 }
2852
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2853 /* try headers filters */
2854 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]2855 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2856 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2857
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2858 /* has the request been denied ? */
2859 if (txn->flags & TX_CLDENY) {
2860 /* no need to go further */
2861 txn->status = 403;
2862 /* let's log the request time */
2863 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2864 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2865 session_inc_http_err_ctr(s);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2866 goto return_prx_cond;
2867 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2868
2869 /* When a connection is tarpitted, we use the tarpit timeout,
2870 * which may be the same as the connect timeout if unspecified.
2871 * If unset, then set it to zero because we really want it to
2872 * eventually expire. We build the tarpit as an analyser.
2873 */
2874 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2875 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2876 /* wipe the request out so that we can drop the connection early
2877 * if the client closes first.
2878 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2879 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2880 req->analysers = 0; /* remove switching rules etc... */
2881 req->analysers |= AN_REQ_HTTP_TARPIT;
2882 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
2883 if (!req->analyse_exp)
2884 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2885 session_inc_http_err_ctr(s);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2886 return 1;
2887 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2888 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2889
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2890 /* Until set to anything else, the connection mode is set as TUNNEL. It will
2891 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2892 * Option httpclose by itself does not set a mode, it remains a tunnel mode
2893 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2894 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
2895 * avoid to redo the same work if FE and BE have the same settings (common).
2896 * The method consists in checking if options changed between the two calls
2897 * (implying that either one is non-null, or one of them is non-null and we
2898 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]2899 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2900
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]2901 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
2902 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
2903 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
2904 (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]2905 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2906
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]2907 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
2908 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2909 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2910 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
2911 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2912 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2913 tmp = TX_CON_WANT_CLO;
2914
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2915 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
2916 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2917
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2918 if (!(txn->flags & TX_HDR_CONN_PRS)) {
2919 /* parse the Connection header and possibly clean it */
2920 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2921 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]2922 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
2923 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2924 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2925 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2926 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2927 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2928 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2929
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2930 /* check if client or config asks for explicit close in KAL/SCL */
2931 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
2932 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
2933 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2934 (!(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]2935 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2936 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]2937 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2938 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
2939 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]2940
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2941 /* we can be blocked here because the request needs to be authenticated,
2942 * either to pass or to access stats.
2943 */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2944 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_HTTP_AUTH) {
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2945 struct chunk msg;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2946 char *realm = http_req_last_rule->http_auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2947
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]2948 if (!realm)
2949 realm = do_stats?STATS_DEFAULT_REALM:px->id;
2950
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]2951 sprintf(trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, realm);
David du Colombier7af46052012-05-16 14:16:48 +0200[diff] [blame]2952 chunk_initlen(&msg, trash, trashlen, strlen(trash));
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2953 txn->status = 401;
2954 stream_int_retnclose(req->prod, &msg);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2955 /* on 401 we still count one error, because normal browsing
2956 * won't significantly increase the counter but brute force
2957 * attempts will.
2958 */
2959 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]2960 goto return_prx_cond;
2961 }
2962
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2963 /* add request headers from the rule sets in the same order */
2964 list_for_each_entry(wl, &px->req_add, list) {
2965 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2966 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]2967 ret = acl_pass(ret);
2968 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
2969 ret = !ret;
2970 if (!ret)
2971 continue;
2972 }
2973
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2974 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2975 goto return_bad_req;
2976 }
2977
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]2978 if (do_stats) {
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]2979 struct stats_admin_rule *stats_admin_rule;
2980
2981 /* We need to provide stats for this request.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2982 * FIXME!!! that one is rather dangerous, we want to
2983 * make it follow standard rules (eg: clear req->analysers).
2984 */
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]2985
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]2986 /* now check whether we have some admin rules for this request */
2987 list_for_each_entry(stats_admin_rule, &s->be->uri_auth->admin_rules, list) {
2988 int ret = 1;
2989
2990 if (stats_admin_rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2991 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]2992 ret = acl_pass(ret);
2993 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
2994 ret = !ret;
2995 }
2996
2997 if (ret) {
2998 /* no rule, or the rule matches */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]2999 s->rep->prod->applet.ctx.stats.flags |= STAT_ADMIN;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3000 break;
3001 }
3002 }
3003
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3004 /* Was the status page requested with a POST ? */
3005 if (txn->meth == HTTP_METH_POST) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3006 if (s->rep->prod->applet.ctx.stats.flags & STAT_ADMIN) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3007 if (msg->msg_state < HTTP_MSG_100_SENT) {
3008 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3009 * send an HTTP/1.1 100 Continue intermediate response.
3010 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3011 if (msg->flags & HTTP_MSGF_VER_11) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3012 struct hdr_ctx ctx;
3013 ctx.idx = 0;
3014 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3015 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3016 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3017 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3018 }
3019 }
3020 msg->msg_state = HTTP_MSG_100_SENT;
3021 s->logs.tv_request = now; /* update the request timer to reflect full request */
3022 }
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3023 if (!http_process_req_stat_post(s->rep->prod, txn, req)) {
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3024 /* we need more data */
3025 req->analysers |= an_bit;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3026 channel_dont_connect(req);
Cyril Bonté23b39d92011-02-10 22:54:44 +0100[diff] [blame]3027 return 0;
3028 }
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3029 } else {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]3030 s->rep->prod->applet.ctx.stats.st_code = STAT_STATUS_DENY;
Cyril Bonté474be412010-10-12 00:14:36 +0200[diff] [blame]3031 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]3032 }
3033
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3034 s->logs.tv_request = now;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3035 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreaub24281b2011-02-13 13:16:36 +0100[diff] [blame]3036 stream_int_register_handler(s->rep->prod, &http_stats_applet);
Willy Tarreau3cefd522012-08-30 15:49:18 +0200[diff] [blame]3037 copy_target(&s->target, &s->rep->prod->conn.target); // for logging only
Willy Tarreauf7bc57c2012-10-03 00:19:48 +0200[diff] [blame]3038 s->rep->prod->conn.xprt_ctx = s;
Willy Tarreaubc4af052011-02-13 13:25:14 +0100[diff] [blame]3039 s->rep->prod->applet.st0 = s->rep->prod->applet.st1 = 0;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3040 req->analysers = 0;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]3041 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3042 s->fe->fe_counters.intercepted_req++;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3043
3044 return 0;
3045
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3046 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3047
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3048 /* check whether we have some ACLs set to redirect this request */
3049 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3050 int ret = ACL_PAT_PASS;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3051
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3052 if (rule->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3053 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]3054 ret = acl_pass(ret);
3055 if (rule->cond->pol == ACL_COND_UNLESS)
3056 ret = !ret;
3057 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3058
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3059 if (ret) {
David du Colombier7af46052012-05-16 14:16:48 +0200[diff] [blame]3060 struct chunk rdr = { .str = trash, .size = trashlen, .len = 0 };
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3061 const char *msg_fmt;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3062
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3063 /* build redirect message */
3064 switch(rule->code) {
3065 case 303:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3066 msg_fmt = HTTP_303;
3067 break;
3068 case 301:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3069 msg_fmt = HTTP_301;
3070 break;
3071 case 302:
3072 default:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3073 msg_fmt = HTTP_302;
3074 break;
3075 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3076
Willy Tarreau3bb9c232010-01-03 12:24:37 +0100[diff] [blame]3077 if (unlikely(!chunk_strcpy(&rdr, msg_fmt)))
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3078 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3079
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3080 switch(rule->type) {
Willy Tarreau2e1dca82012-09-12 08:43:15 +0200[diff] [blame]3081 case REDIRECT_TYPE_SCHEME: {
3082 const char *path;
3083 const char *host;
3084 struct hdr_ctx ctx;
3085 int pathlen;
3086 int hostlen;
3087
3088 host = "";
3089 hostlen = 0;
3090 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3091 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]3092 host = ctx.line + ctx.val;
3093 hostlen = ctx.vlen;
3094 }
3095
3096 path = http_get_path(txn);
3097 /* build message using path */
3098 if (path) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3099 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]3100 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3101 int qs = 0;
3102 while (qs < pathlen) {
3103 if (path[qs] == '?') {
3104 pathlen = qs;
3105 break;
3106 }
3107 qs++;
3108 }
3109 }
3110 } else {
3111 path = "/";
3112 pathlen = 1;
3113 }
3114
3115 /* check if we can add scheme + "://" + host + path */
3116 if (rdr.len + rule->rdr_len + 3 + hostlen + pathlen > rdr.size - 4)
3117 goto return_bad_req;
3118
3119 /* add scheme */
3120 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
3121 rdr.len += rule->rdr_len;
3122
3123 /* add "://" */
3124 memcpy(rdr.str + rdr.len, "://", 3);
3125 rdr.len += 3;
3126
3127 /* add host */
3128 memcpy(rdr.str + rdr.len, host, hostlen);
3129 rdr.len += hostlen;
3130
3131 /* add path */
3132 memcpy(rdr.str + rdr.len, path, pathlen);
3133 rdr.len += pathlen;
3134
3135 /* append a slash at the end of the location is needed and missing */
3136 if (rdr.len && rdr.str[rdr.len - 1] != '/' &&
3137 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3138 if (rdr.len > rdr.size - 5)
3139 goto return_bad_req;
3140 rdr.str[rdr.len] = '/';
3141 rdr.len++;
3142 }
3143
3144 break;
3145 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3146 case REDIRECT_TYPE_PREFIX: {
3147 const char *path;
3148 int pathlen;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3149
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3150 path = http_get_path(txn);
3151 /* build message using path */
3152 if (path) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3153 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]3154 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3155 int qs = 0;
3156 while (qs < pathlen) {
3157 if (path[qs] == '?') {
3158 pathlen = qs;
3159 break;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3160 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3161 qs++;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3162 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3163 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3164 } else {
3165 path = "/";
3166 pathlen = 1;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3167 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3168
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]3169 if (rdr.len + rule->rdr_len + pathlen > rdr.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3170 goto return_bad_req;
3171
3172 /* add prefix. Note that if prefix == "/", we don't want to
3173 * add anything, otherwise it makes it hard for the user to
3174 * configure a self-redirection.
3175 */
3176 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3177 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
3178 rdr.len += rule->rdr_len;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3179 }
3180
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3181 /* add path */
3182 memcpy(rdr.str + rdr.len, path, pathlen);
3183 rdr.len += pathlen;
Willy Tarreau81e3b4f2010-01-10 00:42:19 +0100[diff] [blame]3184
3185 /* append a slash at the end of the location is needed and missing */
3186 if (rdr.len && rdr.str[rdr.len - 1] != '/' &&
3187 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3188 if (rdr.len > rdr.size - 5)
3189 goto return_bad_req;
3190 rdr.str[rdr.len] = '/';
3191 rdr.len++;
3192 }
3193
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3194 break;
3195 }
3196 case REDIRECT_TYPE_LOCATION:
3197 default:
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]3198 if (rdr.len + rule->rdr_len > rdr.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3199 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3200
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3201 /* add location */
3202 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
3203 rdr.len += rule->rdr_len;
3204 break;
3205 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3206
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3207 if (rule->cookie_len) {
3208 memcpy(rdr.str + rdr.len, "\r\nSet-Cookie: ", 14);
3209 rdr.len += 14;
3210 memcpy(rdr.str + rdr.len, rule->cookie_str, rule->cookie_len);
3211 rdr.len += rule->cookie_len;
3212 memcpy(rdr.str + rdr.len, "\r\n", 2);
3213 rdr.len += 2;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3214 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]3215
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3216 /* add end of headers and the keep-alive/close status.
3217 * We may choose to set keep-alive if the Location begins
3218 * with a slash, because the client will come back to the
3219 * same server.
3220 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3221 txn->status = rule->code;
3222 /* let's log the request time */
3223 s->logs.tv_request = now;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3224
3225 if (rule->rdr_len >= 1 && *rule->rdr_str == '/' &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3226 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3227 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3228 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3229 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3230 /* keep-alive possible */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3231 if (!(msg->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3232 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3233 memcpy(rdr.str + rdr.len, "\r\nProxy-Connection: keep-alive", 30);
3234 rdr.len += 30;
3235 } else {
3236 memcpy(rdr.str + rdr.len, "\r\nConnection: keep-alive", 24);
3237 rdr.len += 24;
3238 }
Willy Tarreau75661452010-01-10 10:35:01 +0100[diff] [blame]3239 }
3240 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
3241 rdr.len += 4;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3242 bo_inject(req->prod->ob, rdr.str, rdr.len);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3243 /* "eat" the request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3244 bi_fast_delete(req->buf, msg->sov);
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3245 msg->sov = 0;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3246 req->analysers = AN_REQ_HTTP_XFER_BODY;
Willy Tarreau9300fb22010-01-05 00:58:24 +0100[diff] [blame]3247 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3248 txn->req.msg_state = HTTP_MSG_CLOSED;
3249 txn->rsp.msg_state = HTTP_MSG_DONE;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3250 break;
3251 } else {
3252 /* keep-alive not possible */
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3253 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3254 memcpy(rdr.str + rdr.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3255 rdr.len += 29;
3256 } else {
3257 memcpy(rdr.str + rdr.len, "\r\nConnection: close\r\n\r\n", 23);
3258 rdr.len += 23;
3259 }
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]3260 stream_int_retnclose(req->prod, &rdr);
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3261 goto return_prx_cond;
3262 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3263 }
3264 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3265
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3266 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3267 * If this happens, then the data will not come immediately, so we must
3268 * send all what we have without waiting. Note that due to the small gain
3269 * 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]3270 * 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]3271 * itself once used.
3272 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3273 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3274
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3275 /* that's OK for us now, let's move on to next analysers */
3276 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3277
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3278 return_bad_req:
3279 /* We centralize bad requests processing here */
3280 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3281 /* we detected a parsing error. We want to archive this request
3282 * in the dedicated proxy area for later troubleshooting.
3283 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3284 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]3285 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3286
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3287 txn->req.msg_state = HTTP_MSG_ERROR;
3288 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3289 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3290
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3291 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3292 if (s->listener->counters)
3293 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3294
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3295 return_prx_cond:
3296 if (!(s->flags & SN_ERR_MASK))
3297 s->flags |= SN_ERR_PRXCOND;
3298 if (!(s->flags & SN_FINST_MASK))
3299 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3300
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3301 req->analysers = 0;
3302 req->analyse_exp = TICK_ETERNITY;
3303 return 0;
3304}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3305
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3306/* This function performs all the processing enabled for the current request.
3307 * It returns 1 if the processing can continue on next analysers, or zero if it
3308 * needs more data, encounters an error, or wants to immediately abort the
3309 * request. It relies on buffers flags, and updates s->req->analysers.
3310 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3311int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3312{
3313 struct http_txn *txn = &s->txn;
3314 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3315
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3316 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3317 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3318 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3319 return 0;
3320 }
3321
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3322 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]3323 now_ms, __FUNCTION__,
3324 s,
3325 req,
3326 req->rex, req->wex,
3327 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3328 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3329 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3330
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3331 /*
3332 * Right now, we know that we have processed the entire headers
3333 * and that unwanted requests have been filtered out. We can do
3334 * whatever we want with the remaining request. Also, now we
3335 * may have separate values for ->fe, ->be.
3336 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3337
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3338 /*
3339 * If HTTP PROXY is set we simply get remote server address
3340 * parsing incoming request.
3341 */
3342 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3343 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]3344 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3345
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3346 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3347 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3348 * Note that doing so might move headers in the request, but
3349 * the fields will stay coherent and the URI will not move.
3350 * This should only be performed in the backend.
3351 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3352 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3353 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3354 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3355
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3356 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3357 * 8: the appsession cookie was looked up very early in 1.2,
3358 * so let's do the same now.
3359 */
3360
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3361 /* It needs to look into the URI unless persistence must be ignored */
3362 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3363 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]3364 }
3365
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3366 /* add unique-id if "header-unique-id" is specified */
3367
3368 if (!LIST_ISEMPTY(&s->fe->format_unique_id))
3369 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
3370
3371 if (s->fe->header_unique_id && s->unique_id) {
3372 int ret = snprintf(trash, global.tune.bufsize, "%s: %s", s->fe->header_unique_id, s->unique_id);
3373 if (ret < 0 || ret > global.tune.bufsize)
3374 goto return_bad_req;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3375 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, trash) < 0))
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3376 goto return_bad_req;
3377 }
3378
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3379 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3380 * 9: add X-Forwarded-For if either the frontend or the backend
3381 * asks for it.
3382 */
3383 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3384 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3385 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3386 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3387 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]3388 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3389 /* The header is set to be added only if none is present
3390 * and we found it, so don't do anything.
3391 */
3392 }
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3393 else if (s->req->prod->conn.addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3394 /* Add an X-Forwarded-For header unless the source IP is
3395 * in the 'except' network range.
3396 */
3397 if ((!s->fe->except_mask.s_addr ||
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3398 (((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]3399 != s->fe->except_net.s_addr) &&
3400 (!s->be->except_mask.s_addr ||
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3401 (((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]3402 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3403 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3404 unsigned char *pn;
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3405 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn.addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3406
3407 /* Note: we rely on the backend to get the header name to be used for
3408 * x-forwarded-for, because the header is really meant for the backends.
3409 * However, if the backend did not specify any option, we have to rely
3410 * on the frontend's header name.
3411 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3412 if (s->be->fwdfor_hdr_len) {
3413 len = s->be->fwdfor_hdr_len;
3414 memcpy(trash, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3415 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3416 len = s->fe->fwdfor_hdr_len;
3417 memcpy(trash, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3418 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3419 len += sprintf(trash + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
Willy Tarreauedcf6682008-11-30 23:15:34 +0100[diff] [blame]3420
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3421 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, len) < 0))
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3422 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3423 }
3424 }
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3425 else if (s->req->prod->conn.addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3426 /* FIXME: for the sake of completeness, we should also support
3427 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3428 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3429 int len;
3430 char pn[INET6_ADDRSTRLEN];
3431 inet_ntop(AF_INET6,
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3432 (const void *)&((struct sockaddr_in6 *)(&s->req->prod->conn.addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3433 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3434
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3435 /* Note: we rely on the backend to get the header name to be used for
3436 * x-forwarded-for, because the header is really meant for the backends.
3437 * However, if the backend did not specify any option, we have to rely
3438 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3439 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3440 if (s->be->fwdfor_hdr_len) {
3441 len = s->be->fwdfor_hdr_len;
3442 memcpy(trash, s->be->fwdfor_hdr_name, len);
3443 } else {
3444 len = s->fe->fwdfor_hdr_len;
3445 memcpy(trash, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3446 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3447 len += sprintf(trash + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3448
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3449 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, len) < 0))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3450 goto return_bad_req;
3451 }
3452 }
3453
3454 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3455 * 10: add X-Original-To if either the frontend or the backend
3456 * asks for it.
3457 */
3458 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3459
3460 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3461 if (s->req->prod->conn.addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3462 /* Add an X-Original-To header unless the destination IP is
3463 * in the 'except' network range.
3464 */
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3465 conn_get_to_addr(&s->req->prod->conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3466
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3467 if (s->req->prod->conn.addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3468 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3469 (((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]3470 != s->fe->except_to.s_addr) &&
3471 (!s->be->except_mask_to.s_addr ||
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3472 (((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]3473 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3474 int len;
3475 unsigned char *pn;
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]3476 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn.addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3477
3478 /* Note: we rely on the backend to get the header name to be used for
3479 * x-original-to, because the header is really meant for the backends.
3480 * However, if the backend did not specify any option, we have to rely
3481 * on the frontend's header name.
3482 */
3483 if (s->be->orgto_hdr_len) {
3484 len = s->be->orgto_hdr_len;
3485 memcpy(trash, s->be->orgto_hdr_name, len);
3486 } else {
3487 len = s->fe->orgto_hdr_len;
3488 memcpy(trash, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3489 }
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3490 len += sprintf(trash + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
3491
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3492 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, len) < 0))
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3493 goto return_bad_req;
3494 }
3495 }
3496 }
3497
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3498 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set. */
3499 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3500 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3501 unsigned int want_flags = 0;
3502
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3503 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3504 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
3505 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
3506 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3507 want_flags |= TX_CON_CLO_SET;
3508 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3509 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3510 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3511 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3512 want_flags |= TX_CON_KAL_SET;
3513 }
3514
3515 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3516 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3517 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3518
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3519
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3520 /* If we have no server assigned yet and we're balancing on url_param
3521 * with a POST request, we may be interested in checking the body for
3522 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3523 */
3524 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3525 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3526 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3527 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3528 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3529 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3530 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3531
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3532 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3533 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3534#ifdef TCP_QUICKACK
3535 /* We expect some data from the client. Unless we know for sure
3536 * we already have a full request, we have to re-enable quick-ack
3537 * in case we previously disabled it, otherwise we might cause
3538 * the client to delay further data.
3539 */
3540 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3541 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3542 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaufb7508a2012-05-21 16:47:54 +0200[diff] [blame]3543 setsockopt(si_fd(&s->si[0]), IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3544#endif
3545 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]3546
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3547 /*************************************************************
3548 * OK, that's finished for the headers. We have done what we *
3549 * could. Let's switch to the DATA state. *
3550 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3551 req->analyse_exp = TICK_ETERNITY;
3552 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3553
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3554 /* if the server closes the connection, we want to immediately react
3555 * and close the socket to save packets and syscalls.
3556 */
3557 req->cons->flags |= SI_FL_NOHALF;
3558
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3559 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3560 /* OK let's go on with the BODY now */
3561 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3562
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3563 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3564 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3565 /* we detected a parsing error. We want to archive this request
3566 * in the dedicated proxy area for later troubleshooting.
3567 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3568 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]3569 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3570
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3571 txn->req.msg_state = HTTP_MSG_ERROR;
3572 txn->status = 400;
3573 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3574 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3575
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3576 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3577 if (s->listener->counters)
3578 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3579
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3580 if (!(s->flags & SN_ERR_MASK))
3581 s->flags |= SN_ERR_PRXCOND;
3582 if (!(s->flags & SN_FINST_MASK))
3583 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3584 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3585}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3586
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3587/* This function is an analyser which processes the HTTP tarpit. It always
3588 * returns zero, at the beginning because it prevents any other processing
3589 * from occurring, and at the end because it terminates the request.
3590 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3591int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3592{
3593 struct http_txn *txn = &s->txn;
3594
3595 /* This connection is being tarpitted. The CLIENT side has
3596 * already set the connect expiration date to the right
3597 * timeout. We just have to check that the client is still
3598 * there and that the timeout has not expired.
3599 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3600 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3601 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3602 !tick_is_expired(req->analyse_exp, now_ms))
3603 return 0;
3604
3605 /* We will set the queue timer to the time spent, just for
3606 * logging purposes. We fake a 500 server error, so that the
3607 * attacker will not suspect his connection has been tarpitted.
3608 * It will not cause trouble to the logs because we can exclude
3609 * the tarpitted connections by filtering on the 'PT' status flags.
3610 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3611 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
3612
3613 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3614 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3615 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3616
3617 req->analysers = 0;
3618 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3619
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3620 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3621 if (s->listener->counters)
3622 s->listener->counters->failed_req++;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3623
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3624 if (!(s->flags & SN_ERR_MASK))
3625 s->flags |= SN_ERR_PRXCOND;
3626 if (!(s->flags & SN_FINST_MASK))
3627 s->flags |= SN_FINST_T;
3628 return 0;
3629}
3630
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3631/* This function is an analyser which processes the HTTP request body. It looks
3632 * for parameters to be used for the load balancing algorithm (url_param). It
3633 * must only be called after the standard HTTP request processing has occurred,
3634 * because it expects the request to be parsed. It returns zero if it needs to
3635 * read more data, or 1 once it has completed its analysis.
3636 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3637int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3638{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3639 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3640 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3641 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3642
3643 /* We have to parse the HTTP request body to find any required data.
3644 * "balance url_param check_post" should have been the only way to get
3645 * into this. We were brought here after HTTP header analysis, so all
3646 * related structures are ready.
3647 */
3648
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3649 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
3650 goto missing_data;
3651
3652 if (msg->msg_state < HTTP_MSG_100_SENT) {
3653 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3654 * send an HTTP/1.1 100 Continue intermediate response.
3655 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3656 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3657 struct hdr_ctx ctx;
3658 ctx.idx = 0;
3659 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3660 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3661 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]3662 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3663 }
3664 }
3665 msg->msg_state = HTTP_MSG_100_SENT;
3666 }
3667
3668 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3669 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3670 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]3671 * is still null. We must save the body in msg->next because it
3672 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3673 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]3674 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3675
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3676 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3677 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
3678 else
3679 msg->msg_state = HTTP_MSG_DATA;
3680 }
3681
3682 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3683 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]3684 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3685 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3686 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]3687 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3688
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3689 if (!ret)
3690 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3691 else if (ret < 0) {
3692 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3693 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3694 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3695 }
3696
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3697 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]3698 * We have the first data byte is in msg->sov. We're waiting for at
3699 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3700 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3701
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3702 if (msg->body_len < limit)
3703 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3704
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3705 if (req->buf->i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3706 goto http_end;
3707
3708 missing_data:
3709 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3710 if (buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3711 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3712 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3713 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]3714
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3715 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3716 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3717 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3718
3719 if (!(s->flags & SN_ERR_MASK))
3720 s->flags |= SN_ERR_CLITO;
3721 if (!(s->flags & SN_FINST_MASK))
3722 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3723 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3724 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3725
3726 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3727 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]3728 /* Not enough data. We'll re-use the http-request
3729 * timeout here. Ideally, we should set the timeout
3730 * relative to the accept() date. We just set the
3731 * request timeout once at the beginning of the
3732 * request.
3733 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3734 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3735 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]3736 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3737 return 0;
3738 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3739
3740 http_end:
3741 /* The situation will not evolve, so let's give up on the analysis. */
3742 s->logs.tv_request = now; /* update the request timer to reflect full request */
3743 req->analysers &= ~an_bit;
3744 req->analyse_exp = TICK_ETERNITY;
3745 return 1;
3746
3747 return_bad_req: /* let's centralize all bad requests */
3748 txn->req.msg_state = HTTP_MSG_ERROR;
3749 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3750 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3751
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]3752 if (!(s->flags & SN_ERR_MASK))
3753 s->flags |= SN_ERR_PRXCOND;
3754 if (!(s->flags & SN_FINST_MASK))
3755 s->flags |= SN_FINST_R;
3756
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3757 return_err_msg:
3758 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3759 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3760 if (s->listener->counters)
3761 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3762 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]3763}
3764
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3765/* send a server's name with an outgoing request over an established connection.
3766 * Note: this function is designed to be called once the request has been scheduled
3767 * for being forwarded. This is the reason why it rewinds the buffer before
3768 * proceeding.
3769 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]3770int 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]3771
3772 struct hdr_ctx ctx;
3773
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3774 char *hdr_name = be->server_id_hdr_name;
3775 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]3776 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3777 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3778 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3779
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]3780 ctx.idx = 0;
3781
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3782 old_o = chn->buf->o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3783 if (old_o) {
3784 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3785 b_rew(chn->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3786 }
3787
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3788 old_i = chn->buf->i;
3789 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]3790 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3791 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3792 }
3793
3794 /* Add the new header requested with the server value */
3795 hdr_val = trash;
3796 memcpy(hdr_val, hdr_name, hdr_name_len);
3797 hdr_val += hdr_name_len;
3798 *hdr_val++ = ':';
3799 *hdr_val++ = ' ';
David du Colombier7af46052012-05-16 14:16:48 +0200[diff] [blame]3800 hdr_val += strlcpy2(hdr_val, srv_name, trash + trashlen - hdr_val);
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3801 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash, hdr_val - trash);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3802
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3803 if (old_o) {
3804 /* If this was a forwarded request, we must readjust the amount of
3805 * data to be forwarded in order to take into account the size
3806 * variations.
3807 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3808 b_adv(chn->buf, old_o + chn->buf->i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]3809 }
3810
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]3811 return 0;
3812}
3813
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3814/* Terminate current transaction and prepare a new one. This is very tricky
3815 * right now but it works.
3816 */
3817void http_end_txn_clean_session(struct session *s)
3818{
3819 /* FIXME: We need a more portable way of releasing a backend's and a
3820 * server's connections. We need a safer way to reinitialize buffer
3821 * flags. We also need a more accurate method for computing per-request
3822 * data.
3823 */
3824 http_silent_debug(__LINE__, s);
3825
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3826 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]3827 si_shutr(s->req->cons);
3828 si_shutw(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3829
3830 http_silent_debug(__LINE__, s);
3831
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]3832 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3833 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]3834 if (unlikely(s->srv_conn))
3835 sess_change_server(s, NULL);
3836 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3837
3838 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
3839 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]3840 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3841
3842 if (s->txn.status) {
3843 int n;
3844
3845 n = s->txn.status / 100;
3846 if (n < 1 || n > 5)
3847 n = 0;
3848
3849 if (s->fe->mode == PR_MODE_HTTP)
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3850 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3851
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]3852 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3853 (s->be->mode == PR_MODE_HTTP))
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3854 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3855 }
3856
3857 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3858 s->logs.bytes_in -= s->req->buf->i;
3859 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3860
3861 /* let's do a final log if we need it */
3862 if (s->logs.logwait &&
3863 !(s->flags & SN_MONITOR) &&
3864 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
3865 s->do_log(s);
3866 }
3867
3868 s->logs.accept_date = date; /* user-visible date for logging */
3869 s->logs.tv_accept = now; /* corrected date for internal use */
3870 tv_zero(&s->logs.tv_request);
3871 s->logs.t_queue = -1;
3872 s->logs.t_connect = -1;
3873 s->logs.t_data = -1;
3874 s->logs.t_close = 0;
3875 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
3876 s->logs.srv_queue_size = 0; /* we will get this number soon */
3877
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3878 s->logs.bytes_in = s->req->total = s->req->buf->i;
3879 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3880
3881 if (s->pend_pos)
3882 pendconn_free(s->pend_pos);
3883
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]3884 if (target_srv(&s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3885 if (s->flags & SN_CURR_SESS) {
3886 s->flags &= ~SN_CURR_SESS;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]3887 target_srv(&s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3888 }
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]3889 if (may_dequeue_tasks(target_srv(&s->target), s->be))
3890 process_srv_queue(target_srv(&s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3891 }
3892
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]3893 clear_target(&s->target);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3894
3895 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreaufb7508a2012-05-21 16:47:54 +0200[diff] [blame]3896 s->req->cons->conn.t.sock.fd = -1; /* just to help with debugging */
Willy Tarreau505e34a2012-07-06 10:17:53 +0200[diff] [blame]3897 s->req->cons->conn.flags = CO_FL_NONE;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3898 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]3899 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3900 s->req->cons->err_loc = NULL;
3901 s->req->cons->exp = TICK_ETERNITY;
3902 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3903 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
3904 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]3905 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]3906 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
3907 s->txn.meth = 0;
3908 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]3909 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]3910 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3911 s->req->cons->flags |= SI_FL_INDEP_STR;
3912
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]3913 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3914 s->req->flags |= CF_NEVER_WAIT;
3915 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]3916 }
3917
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3918 /* if the request buffer is not empty, it means we're
3919 * about to process another request, so send pending
3920 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]3921 * Just don't do this if the buffer is close to be full,
3922 * because the request will wait for it to flush a little
3923 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3924 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3925 if (s->req->buf->i) {
3926 if (s->rep->buf->o &&
3927 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
3928 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]3929 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]3930 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3931
3932 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3933 channel_auto_read(s->req);
3934 channel_auto_close(s->req);
3935 channel_auto_read(s->rep);
3936 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3937
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]3938 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3939 s->rep->analysers = 0;
3940
3941 http_silent_debug(__LINE__, s);
3942}
3943
3944
3945/* This function updates the request state machine according to the response
3946 * state machine and buffer flags. It returns 1 if it changes anything (flag
3947 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
3948 * it is only used to find when a request/response couple is complete. Both
3949 * this function and its equivalent should loop until both return zero. It
3950 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
3951 */
3952int http_sync_req_state(struct session *s)
3953{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]3954 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3955 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]3956 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3957 unsigned int old_state = txn->req.msg_state;
3958
3959 http_silent_debug(__LINE__, s);
3960 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
3961 return 0;
3962
3963 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3964 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]3965 * We can shut the read side unless we want to abort_on_close,
3966 * or we have a POST request. The issue with POST requests is
3967 * that some browsers still send a CRLF after the request, and
3968 * this CRLF must be read so that it does not remain in the kernel
3969 * buffers, otherwise a close could cause an RST on some systems
3970 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]3971 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]3972 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]3973 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3974
3975 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
3976 goto wait_other_side;
3977
3978 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
3979 /* The server has not finished to respond, so we
3980 * don't want to move in order not to upset it.
3981 */
3982 goto wait_other_side;
3983 }
3984
3985 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
3986 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]3987 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]3988 txn->req.msg_state = HTTP_MSG_TUNNEL;
3989 goto wait_other_side;
3990 }
3991
3992 /* When we get here, it means that both the request and the
3993 * response have finished receiving. Depending on the connection
3994 * mode, we'll have to wait for the last bytes to leave in either
3995 * direction, and sometimes for a close to be effective.
3996 */
3997
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]3998 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
3999 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4000 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4001 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4002 }
4003 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4004 /* Option forceclose is set, or either side wants to close,
4005 * let's enforce it now that we're not expecting any new
4006 * data to come. The caller knows the session is complete
4007 * once both states are CLOSED.
4008 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4009 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4010 channel_shutr_now(chn);
4011 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4012 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4013 }
4014 else {
4015 /* The last possible modes are keep-alive and tunnel. Since tunnel
4016 * mode does not set the body analyser, we can't reach this place
4017 * in tunnel mode, so we're left with keep-alive only.
4018 * This mode is currently not implemented, we switch to tunnel mode.
4019 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4020 channel_auto_read(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4021 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4022 }
4023
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4024 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4025 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4026 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4027
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4028 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4029 txn->req.msg_state = HTTP_MSG_CLOSING;
4030 goto http_msg_closing;
4031 }
4032 else {
4033 txn->req.msg_state = HTTP_MSG_CLOSED;
4034 goto http_msg_closed;
4035 }
4036 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4037 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4038 }
4039
4040 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4041 http_msg_closing:
4042 /* nothing else to forward, just waiting for the output buffer
4043 * to be empty and for the shutw_now to take effect.
4044 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4045 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4046 txn->req.msg_state = HTTP_MSG_CLOSED;
4047 goto http_msg_closed;
4048 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4049 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4050 txn->req.msg_state = HTTP_MSG_ERROR;
4051 goto wait_other_side;
4052 }
4053 }
4054
4055 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4056 http_msg_closed:
4057 goto wait_other_side;
4058 }
4059
4060 wait_other_side:
4061 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4062 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4063}
4064
4065
4066/* This function updates the response state machine according to the request
4067 * state machine and buffer flags. It returns 1 if it changes anything (flag
4068 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4069 * it is only used to find when a request/response couple is complete. Both
4070 * this function and its equivalent should loop until both return zero. It
4071 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4072 */
4073int http_sync_res_state(struct session *s)
4074{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4075 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4076 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4077 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4078 unsigned int old_state = txn->rsp.msg_state;
4079
4080 http_silent_debug(__LINE__, s);
4081 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4082 return 0;
4083
4084 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4085 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4086 * still monitor the server connection for a possible close
4087 * while the request is being uploaded, so we don't disable
4088 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4089 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4090 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4091
4092 if (txn->req.msg_state == HTTP_MSG_ERROR)
4093 goto wait_other_side;
4094
4095 if (txn->req.msg_state < HTTP_MSG_DONE) {
4096 /* The client seems to still be sending data, probably
4097 * because we got an error response during an upload.
4098 * We have the choice of either breaking the connection
4099 * or letting it pass through. Let's do the later.
4100 */
4101 goto wait_other_side;
4102 }
4103
4104 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4105 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4106 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4107 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
4108 goto wait_other_side;
4109 }
4110
4111 /* When we get here, it means that both the request and the
4112 * response have finished receiving. Depending on the connection
4113 * mode, we'll have to wait for the last bytes to leave in either
4114 * direction, and sometimes for a close to be effective.
4115 */
4116
4117 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4118 /* Server-close mode : shut read and wait for the request
4119 * side to close its output buffer. The caller will detect
4120 * when we're in DONE and the other is in CLOSED and will
4121 * catch that for the final cleanup.
4122 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4123 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4124 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4125 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4126 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4127 /* Option forceclose is set, or either side wants to close,
4128 * let's enforce it now that we're not expecting any new
4129 * data to come. The caller knows the session is complete
4130 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4131 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4132 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4133 channel_shutr_now(chn);
4134 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4135 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4136 }
4137 else {
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4138 /* The last possible modes are keep-alive and tunnel. Since tunnel
4139 * mode does not set the body analyser, we can't reach this place
4140 * in tunnel mode, so we're left with keep-alive only.
4141 * This mode is currently not implemented, we switch to tunnel mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4142 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4143 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4144 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4145 }
4146
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4147 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4148 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4149 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4150 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4151 goto http_msg_closing;
4152 }
4153 else {
4154 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4155 goto http_msg_closed;
4156 }
4157 }
4158 goto wait_other_side;
4159 }
4160
4161 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4162 http_msg_closing:
4163 /* nothing else to forward, just waiting for the output buffer
4164 * to be empty and for the shutw_now to take effect.
4165 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4166 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4167 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4168 goto http_msg_closed;
4169 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4170 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4171 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4172 s->be->be_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4173 if (target_srv(&s->target))
4174 target_srv(&s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4175 goto wait_other_side;
4176 }
4177 }
4178
4179 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4180 http_msg_closed:
4181 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4182 bi_erase(chn);
4183 channel_auto_close(chn);
4184 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4185 goto wait_other_side;
4186 }
4187
4188 wait_other_side:
4189 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4190 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4191}
4192
4193
4194/* Resync the request and response state machines. Return 1 if either state
4195 * changes.
4196 */
4197int http_resync_states(struct session *s)
4198{
4199 struct http_txn *txn = &s->txn;
4200 int old_req_state = txn->req.msg_state;
4201 int old_res_state = txn->rsp.msg_state;
4202
4203 http_silent_debug(__LINE__, s);
4204 http_sync_req_state(s);
4205 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4206 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4207 if (!http_sync_res_state(s))
4208 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4209 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4210 if (!http_sync_req_state(s))
4211 break;
4212 }
4213 http_silent_debug(__LINE__, s);
4214 /* OK, both state machines agree on a compatible state.
4215 * There are a few cases we're interested in :
4216 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4217 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4218 * directions, so let's simply disable both analysers.
4219 * - HTTP_MSG_CLOSED on the response only means we must abort the
4220 * request.
4221 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4222 * with server-close mode means we've completed one request and we
4223 * must re-initialize the server connection.
4224 */
4225
4226 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4227 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4228 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4229 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4230 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4231 channel_auto_close(s->req);
4232 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4233 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4234 channel_auto_close(s->rep);
4235 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4236 }
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4237 else if (txn->rsp.msg_state == HTTP_MSG_CLOSED ||
4238 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4239 txn->req.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4240 (s->rep->flags & CF_SHUTW)) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4241 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4242 channel_auto_close(s->rep);
4243 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4244 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4245 channel_abort(s->req);
4246 channel_auto_close(s->req);
4247 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4248 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4249 }
4250 else if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4251 txn->rsp.msg_state == HTTP_MSG_DONE &&
4252 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)) {
4253 /* server-close: terminate this server connection and
4254 * reinitialize a fresh-new transaction.
4255 */
4256 http_end_txn_clean_session(s);
4257 }
4258
4259 http_silent_debug(__LINE__, s);
4260 return txn->req.msg_state != old_req_state ||
4261 txn->rsp.msg_state != old_res_state;
4262}
4263
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4264/* This function is an analyser which forwards request body (including chunk
4265 * sizes if any). It is called as soon as we must forward, even if we forward
4266 * zero byte. The only situation where it must not be called is when we're in
4267 * tunnel mode and we want to forward till the close. It's used both to forward
4268 * remaining data and to resync after end of body. It expects the msg_state to
4269 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4270 * 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]4271 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4272 * bytes of pending data + the headers if not already done (between sol and sov).
4273 * 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]4274 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4275int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4276{
4277 struct http_txn *txn = &s->txn;
4278 struct http_msg *msg = &s->txn.req;
4279
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4280 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4281 return 0;
4282
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4283 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]4284 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4285 /* Output closed while we were sending data. We must abort and
4286 * wake the other side up.
4287 */
4288 msg->msg_state = HTTP_MSG_ERROR;
4289 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4290 return 1;
4291 }
4292
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4293 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4294 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4295
4296 /* Note that we don't have to send 100-continue back because we don't
4297 * need the data to complete our job, and it's up to the server to
4298 * decide whether to return 100, 417 or anything else in return of
4299 * an "Expect: 100-continue" header.
4300 */
4301
4302 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4303 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4304 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4305 * is still null. We must save the body in msg->next because it
4306 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4307 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4308 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4309
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4310 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4311 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4312 else {
4313 msg->msg_state = HTTP_MSG_DATA;
4314 }
4315 }
4316
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4317 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4318 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4319
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4320 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4321 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4322 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4323 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4324 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4325 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4326 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4327 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4328 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4329
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4330 if (msg->msg_state == HTTP_MSG_DATA) {
4331 /* must still forward */
4332 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4333 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4334
4335 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4336 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4337 msg->msg_state = HTTP_MSG_DATA_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4338 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4339 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4340 }
4341 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4342 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4343 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4344 * TRAILERS state.
4345 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4346 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4347
4348 if (!ret)
4349 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4350 else if (ret < 0) {
4351 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4352 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4353 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]4354 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4355 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4356 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4357 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4358 else if (msg->msg_state == HTTP_MSG_DATA_CRLF) {
4359 /* we want the CRLF after the data */
4360 int ret;
4361
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4362 ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4363
4364 if (ret == 0)
4365 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4366 else if (ret < 0) {
4367 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4368 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4369 http_capture_bad_message(&s->fe->invalid_req, s, msg, HTTP_MSG_DATA_CRLF, s->be);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4370 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4371 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4372 /* we're in MSG_CHUNK_SIZE now */
4373 }
4374 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4375 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4376
4377 if (ret == 0)
4378 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4379 else if (ret < 0) {
4380 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4381 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4382 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]4383 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4384 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4385 /* we're in HTTP_MSG_DONE now */
4386 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4387 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4388 int old_state = msg->msg_state;
4389
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4390 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4391 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4392 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4393 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4394 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4395 if (http_resync_states(s)) {
4396 /* some state changes occurred, maybe the analyser
4397 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4398 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4399 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4400 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4401 /* request errors are most likely due to
4402 * the server aborting the transfer.
4403 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4404 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4405 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4406 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4407 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4408 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4409 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4410 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4411 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4412
4413 /* If "option abortonclose" is set on the backend, we
4414 * want to monitor the client's connection and forward
4415 * any shutdown notification to the server, which will
4416 * decide whether to close or to go on processing the
4417 * request.
4418 */
4419 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4420 channel_auto_read(req);
4421 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4422 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4423 else if (s->txn.meth == HTTP_METH_POST) {
4424 /* POST requests may require to read extra CRLF
4425 * sent by broken browsers and which could cause
4426 * an RST to be sent upon close on some systems
4427 * (eg: Linux).
4428 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4429 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4430 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4431
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4432 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4433 }
4434 }
4435
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4436 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4437 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4438 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4439 if (!(s->flags & SN_ERR_MASK))
4440 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4441 if (!(s->flags & SN_FINST_MASK)) {
4442 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4443 s->flags |= SN_FINST_H;
4444 else
4445 s->flags |= SN_FINST_D;
4446 }
4447
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4448 s->fe->fe_counters.cli_aborts++;
4449 s->be->be_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4450 if (target_srv(&s->target))
4451 target_srv(&s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4452
4453 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4454 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4455
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4456 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4457 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4458 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4459
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4460 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4461 * 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]4462 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4463 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4464 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4465
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4466 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4467 * 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]4468 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4469 * modes are already handled by the stream sock layer. We must not do
4470 * this in content-length mode because it could present the MSG_MORE
4471 * flag with the last block of forwarded data, which would cause an
4472 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4473 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4474 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4475 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4476
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4477 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4478 return 0;
4479
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4480 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4481 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4482 if (s->listener->counters)
4483 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4484 return_bad_req_stats_ok:
4485 txn->req.msg_state = HTTP_MSG_ERROR;
4486 if (txn->status) {
4487 /* Note: we don't send any error if some data were already sent */
4488 stream_int_retnclose(req->prod, NULL);
4489 } else {
4490 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4491 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4492 }
4493 req->analysers = 0;
4494 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]4495
4496 if (!(s->flags & SN_ERR_MASK))
4497 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4498 if (!(s->flags & SN_FINST_MASK)) {
4499 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4500 s->flags |= SN_FINST_H;
4501 else
4502 s->flags |= SN_FINST_D;
4503 }
4504 return 0;
4505
4506 aborted_xfer:
4507 txn->req.msg_state = HTTP_MSG_ERROR;
4508 if (txn->status) {
4509 /* Note: we don't send any error if some data were already sent */
4510 stream_int_retnclose(req->prod, NULL);
4511 } else {
4512 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4513 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4514 }
4515 req->analysers = 0;
4516 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
4517
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4518 s->fe->fe_counters.srv_aborts++;
4519 s->be->be_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4520 if (target_srv(&s->target))
4521 target_srv(&s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4522
4523 if (!(s->flags & SN_ERR_MASK))
4524 s->flags |= SN_ERR_SRVCL;
4525 if (!(s->flags & SN_FINST_MASK)) {
4526 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4527 s->flags |= SN_FINST_H;
4528 else
4529 s->flags |= SN_FINST_D;
4530 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4531 return 0;
4532}
4533
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4534/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4535 * processing can continue on next analysers, or zero if it either needs more
4536 * data or wants to immediately abort the response (eg: timeout, error, ...). It
4537 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
4538 * when it has nothing left to do, and may remove any analyser when it wants to
4539 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4540 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4541int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4542{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4543 struct http_txn *txn = &s->txn;
4544 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4545 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4546 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4547 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4548 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4549
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4550 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]4551 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4552 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4553 rep,
4554 rep->rex, rep->wex,
4555 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4556 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4557 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]4558
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4559 /*
4560 * Now parse the partial (or complete) lines.
4561 * We will check the response syntax, and also join multi-line
4562 * headers. An index of all the lines will be elaborated while
4563 * parsing.
4564 *
4565 * For the parsing, we use a 28 states FSM.
4566 *
4567 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4568 * rep->buf->p = beginning of response
4569 * rep->buf->p + msg->eoh = end of processed headers / start of current one
4570 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4571 * msg->eol = end of current header or line (LF or CRLF)
4572 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4573 */
4574
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4575 /* There's a protected area at the end of the buffer for rewriting
4576 * purposes. We don't want to start to parse the request if the
4577 * protected area is affected, because we may have to move processed
4578 * data later, which is much more complicated.
4579 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4580 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]4581 if (unlikely(channel_full(rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4582 bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
4583 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite)) {
4584 if (rep->buf->o) {
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4585 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4586 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4587 goto abort_response;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4588 channel_dont_close(rep);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4589 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]4590 return 0;
4591 }
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4592 if (rep->buf->i <= rep->buf->size - global.tune.maxrewrite)
4593 buffer_slow_realign(msg->chn->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4594 }
4595
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4596 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]4597 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4598 }
4599
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4600 /* 1: we might have to print this header in debug mode */
4601 if (unlikely((global.mode & MODE_DEBUG) &&
4602 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4603 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4604 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4605
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4606 sol = rep->buf->p;
4607 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4608 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4609
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4610 sol += hdr_idx_first_pos(&txn->hdr_idx);
4611 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4612
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4613 while (cur_idx) {
4614 eol = sol + txn->hdr_idx.v[cur_idx].len;
4615 debug_hdr("srvhdr", s, sol, eol);
4616 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
4617 cur_idx = txn->hdr_idx.v[cur_idx].next;
4618 }
4619 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4620
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4621 /*
4622 * Now we quickly check if we have found a full valid response.
4623 * If not so, we check the FD and buffer states before leaving.
4624 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4625 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4626 * responses are checked first.
4627 *
4628 * Depending on whether the client is still there or not, we
4629 * may send an error response back or not. Note that normally
4630 * we should only check for HTTP status there, and check I/O
4631 * errors somewhere else.
4632 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4633
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4634 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4635 /* Invalid response */
4636 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
4637 /* we detected a parsing error. We want to archive this response
4638 * in the dedicated proxy area for later troubleshooting.
4639 */
4640 hdr_response_bad:
4641 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4642 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]4643
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4644 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4645 if (target_srv(&s->target)) {
4646 target_srv(&s->target)->counters.failed_resp++;
4647 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4648 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]4649 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4650 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4651 rep->analysers = 0;
4652 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4653 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4654 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4655 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4656
4657 if (!(s->flags & SN_ERR_MASK))
4658 s->flags |= SN_ERR_PRXCOND;
4659 if (!(s->flags & SN_FINST_MASK))
4660 s->flags |= SN_FINST_H;
4661
4662 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4663 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4664
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4665 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4666 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]4667 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4668 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4669 goto hdr_response_bad;
4670 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4671
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4672 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4673 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4674 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4675 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]4676
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4677 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4678 if (target_srv(&s->target)) {
4679 target_srv(&s->target)->counters.failed_resp++;
4680 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4681 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]4682
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4683 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4684 rep->analysers = 0;
4685 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4686 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4687 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4688 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]4689
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4690 if (!(s->flags & SN_ERR_MASK))
4691 s->flags |= SN_ERR_SRVCL;
4692 if (!(s->flags & SN_FINST_MASK))
4693 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]4694 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4695 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4696
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4697 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4698 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4699 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4700 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]4701
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4702 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4703 if (target_srv(&s->target)) {
4704 target_srv(&s->target)->counters.failed_resp++;
4705 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4706 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4707
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4708 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4709 rep->analysers = 0;
4710 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4711 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4712 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4713 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4714
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4715 if (!(s->flags & SN_ERR_MASK))
4716 s->flags |= SN_ERR_SRVTO;
4717 if (!(s->flags & SN_FINST_MASK))
4718 s->flags |= SN_FINST_H;
4719 return 0;
4720 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]4721
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4722 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4723 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]4724 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4725 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]4726
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4727 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4728 if (target_srv(&s->target)) {
4729 target_srv(&s->target)->counters.failed_resp++;
4730 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4731 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4732
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4733 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4734 rep->analysers = 0;
4735 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]4736 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4737 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4738 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4739
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4740 if (!(s->flags & SN_ERR_MASK))
4741 s->flags |= SN_ERR_SRVCL;
4742 if (!(s->flags & SN_FINST_MASK))
4743 s->flags |= SN_FINST_H;
4744 return 0;
4745 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4746
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4747 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4748 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4749 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4750 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]4751
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4752 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4753 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4754 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4755
4756 if (!(s->flags & SN_ERR_MASK))
4757 s->flags |= SN_ERR_CLICL;
4758 if (!(s->flags & SN_FINST_MASK))
4759 s->flags |= SN_FINST_H;
4760
4761 /* process_session() will take care of the error */
4762 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4763 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4764
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4765 channel_dont_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4766 return 0;
4767 }
4768
4769 /* More interesting part now : we know that we have a complete
4770 * response which at least looks like HTTP. We have an indicator
4771 * of each header's length, so we can parse them quickly.
4772 */
4773
4774 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4775 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]4776
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4777 /*
4778 * 1: get the status code
4779 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4780 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4781 if (n < 1 || n > 5)
4782 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4783 /* when the client triggers a 4xx from the server, it's most often due
4784 * to a missing object or permission. These events should be tracked
4785 * because if they happen often, it may indicate a brute force or a
4786 * vulnerability scan.
4787 */
4788 if (n == 4)
4789 session_inc_http_err_ctr(s);
4790
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4791 if (target_srv(&s->target))
4792 target_srv(&s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4793
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4794 /* check if the response is HTTP/1.1 or above */
4795 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4796 ((rep->buf->p[5] > '1') ||
4797 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4798 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4799
4800 /* "connection" has not been parsed yet */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]4801 txn->flags &= ~(TX_HDR_CONN_PRS|TX_HDR_CONN_CLO|TX_HDR_CONN_KAL|TX_CON_CLO_SET|TX_CON_KAL_SET);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4802
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4803 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4804 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4805
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4806 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]4807
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]4808 /* Adjust server's health based on status code. Note: status codes 501
4809 * and 505 are triggered on demand by client request, so we must not
4810 * count them as server failures.
4811 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4812 if (target_srv(&s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]4813 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4814 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]4815 else
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]4816 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]4817 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]4818
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4819 /*
4820 * 2: check for cacheability.
4821 */
4822
4823 switch (txn->status) {
4824 case 200:
4825 case 203:
4826 case 206:
4827 case 300:
4828 case 301:
4829 case 410:
4830 /* RFC2616 @13.4:
4831 * "A response received with a status code of
4832 * 200, 203, 206, 300, 301 or 410 MAY be stored
4833 * by a cache (...) unless a cache-control
4834 * directive prohibits caching."
4835 *
4836 * RFC2616 @9.5: POST method :
4837 * "Responses to this method are not cacheable,
4838 * unless the response includes appropriate
4839 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4840 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4841 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]4842 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4843 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
4844 break;
4845 default:
4846 break;
4847 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]4848
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4849 /*
4850 * 3: we may need to capture headers
4851 */
4852 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]4853 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4854 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4855 txn->rsp.cap, s->fe->rsp_cap);
4856
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4857 /* 4: determine the transfer-length.
4858 * According to RFC2616 #4.4, amended by the HTTPbis working group,
4859 * the presence of a message-body in a RESPONSE and its transfer length
4860 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4861 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4862 * All responses to the HEAD request method MUST NOT include a
4863 * message-body, even though the presence of entity-header fields
4864 * might lead one to believe they do. All 1xx (informational), 204
4865 * (No Content), and 304 (Not Modified) responses MUST NOT include a
4866 * message-body. All other responses do include a message-body,
4867 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4868 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4869 * 1. Any response which "MUST NOT" include a message-body (such as the
4870 * 1xx, 204 and 304 responses and any response to a HEAD request) is
4871 * always terminated by the first empty line after the header fields,
4872 * regardless of the entity-header fields present in the message.
4873 *
4874 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
4875 * the "chunked" transfer-coding (Section 6.2) is used, the
4876 * transfer-length is defined by the use of this transfer-coding.
4877 * If a Transfer-Encoding header field is present and the "chunked"
4878 * transfer-coding is not present, the transfer-length is defined by
4879 * the sender closing the connection.
4880 *
4881 * 3. If a Content-Length header field is present, its decimal value in
4882 * OCTETs represents both the entity-length and the transfer-length.
4883 * If a message is received with both a Transfer-Encoding header
4884 * field and a Content-Length header field, the latter MUST be ignored.
4885 *
4886 * 4. If the message uses the media type "multipart/byteranges", and
4887 * the transfer-length is not otherwise specified, then this self-
4888 * delimiting media type defines the transfer-length. This media
4889 * type MUST NOT be used unless the sender knows that the recipient
4890 * can parse it; the presence in a request of a Range header with
4891 * multiple byte-range specifiers from a 1.1 client implies that the
4892 * client can parse multipart/byteranges responses.
4893 *
4894 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4895 */
4896
4897 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4898 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4899 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4900 * FIXME: should we parse anyway and return an error on chunked encoding ?
4901 */
4902 if (txn->meth == HTTP_METH_HEAD ||
4903 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4904 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4905 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4906 goto skip_content_length;
4907 }
4908
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4909 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4910 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4911 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4912 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4913 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4914 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
4915 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4916 /* bad transfer-encoding (chunked followed by something else) */
4917 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4918 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4919 break;
4920 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4921 }
4922
4923 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
4924 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4925 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4926 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4927 signed long long cl;
4928
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4929 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4930 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4931 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4932 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4933
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4934 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4935 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4936 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4937 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4938
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4939 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4940 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4941 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4942 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4943
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4944 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4945 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4946 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]4947 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4948
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4949 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4950 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4951 }
4952
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4953 /* FIXME: we should also implement the multipart/byterange method.
4954 * For now on, we resort to close mode in this case (unknown length).
4955 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4956skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4957
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4958 /* end of job, return OK */
4959 rep->analysers &= ~an_bit;
4960 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4961 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4962 return 1;
4963}
4964
4965/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]4966 * It normally returns 1 unless it wants to break. It relies on buffers flags,
4967 * and updates t->rep->analysers. It might make sense to explode it into several
4968 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4969 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4970int 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]4971{
4972 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4973 struct http_msg *msg = &txn->rsp;
4974 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]4975 struct cond_wordlist *wl;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4976
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4977 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]4978 now_ms, __FUNCTION__,
4979 t,
4980 rep,
4981 rep->rex, rep->wex,
4982 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4983 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4984 rep->analysers);
4985
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4986 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4987 return 0;
4988
4989 rep->analysers &= ~an_bit;
4990 rep->analyse_exp = TICK_ETERNITY;
4991
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]4992 /* Now we have to check if we need to modify the Connection header.
4993 * This is more difficult on the response than it is on the request,
4994 * because we can have two different HTTP versions and we don't know
4995 * how the client will interprete a response. For instance, let's say
4996 * that the client sends a keep-alive request in HTTP/1.0 and gets an
4997 * HTTP/1.1 response without any header. Maybe it will bound itself to
4998 * HTTP/1.0 because it only knows about it, and will consider the lack
4999 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5000 * the lack of header as a keep-alive. Thus we will use two flags
5001 * indicating how a request MAY be understood by the client. In case
5002 * of multiple possibilities, we'll fix the header to be explicit. If
5003 * ambiguous cases such as both close and keepalive are seen, then we
5004 * will fall back to explicit close. Note that we won't take risks with
5005 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5006 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5007 */
5008
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5009 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5010 txn->status == 101)) {
5011 /* Either we've established an explicit tunnel, or we're
5012 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5013 * to understand the next protocols. We have to switch to tunnel
5014 * mode, so that we transfer the request and responses then let
5015 * this protocol pass unmodified. When we later implement specific
5016 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5017 * header which contains information about that protocol for
5018 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5019 */
5020 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5021 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5022 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5023 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5024 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5025 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5026
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5027 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5028 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5029 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5030 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5031
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5032 /* now adjust header transformations depending on current state */
5033 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5034 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5035 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5036 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5037 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5038 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5039 else { /* SCL / KAL */
5040 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5041 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5042 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5043 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5044
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5045 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5046 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5047
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5048 /* Some keep-alive responses are converted to Server-close if
5049 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5050 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5051 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5052 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5053 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5054 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5055 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5056 }
5057
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5058 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5059 /*
5060 * 3: we will have to evaluate the filters.
5061 * As opposed to version 1.2, now they will be evaluated in the
5062 * filters order and not in the header order. This means that
5063 * each filter has to be validated among all headers.
5064 *
5065 * Filters are tried with ->be first, then with ->fe if it is
5066 * different from ->be.
5067 */
5068
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5069 cur_proxy = t->be;
5070 while (1) {
5071 struct proxy *rule_set = cur_proxy;
5072
5073 /* try headers filters */
5074 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5075 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5076 return_bad_resp:
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5077 if (target_srv(&t->target)) {
5078 target_srv(&t->target)->counters.failed_resp++;
5079 health_adjust(target_srv(&t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5080 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5081 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5082 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5083 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5084 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5085 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5086 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5087 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5088 if (!(t->flags & SN_ERR_MASK))
5089 t->flags |= SN_ERR_PRXCOND;
5090 if (!(t->flags & SN_FINST_MASK))
5091 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5092 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5093 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5094 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5095
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5096 /* has the response been denied ? */
5097 if (txn->flags & TX_SVDENY) {
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5098 if (target_srv(&t->target))
5099 target_srv(&t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5100
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5101 t->be->be_counters.denied_resp++;
5102 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5103 if (t->listener->counters)
5104 t->listener->counters->denied_resp++;
5105
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5106 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5107 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5108
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5109 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5110 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5111 if (txn->status < 200)
5112 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5113 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5114 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]5115 ret = acl_pass(ret);
5116 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5117 ret = !ret;
5118 if (!ret)
5119 continue;
5120 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5121 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5122 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5123 }
5124
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5125 /* check whether we're already working on the frontend */
5126 if (cur_proxy == t->fe)
5127 break;
5128 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5129 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5130
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5131 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5132 * We may be facing a 100-continue response, in which case this
5133 * is not the right response, and we're waiting for the next one.
5134 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5135 * next one.
5136 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5137 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5138 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5139 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5140 msg->msg_state = HTTP_MSG_RPBEFORE;
5141 txn->status = 0;
5142 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5143 return 1;
5144 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5145 else if (unlikely(txn->status < 200))
5146 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5147
5148 /* we don't have any 1xx status code now */
5149
5150 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5151 * 4: check for server cookie.
5152 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5153 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5154 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5155 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5156
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5157
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5158 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5159 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5160 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5161 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]5162 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5163
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5164 /*
5165 * 6: add server cookie in the response if needed
5166 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5167 if (target_srv(&t->target) && (t->be->ck_opts & PR_CK_INS) &&
5168 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5169 (!(t->flags & SN_DIRECT) ||
5170 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5171 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5172 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5173 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5174 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5175 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5176 int len;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5177 /* the server is known, it's not the one the client requested, or the
5178 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5179 * insert a set-cookie here, except if we want to insert only on POST
5180 * requests and this one isn't. Note that servers which don't have cookies
5181 * (eg: some backup servers) will return a full cookie removal request.
5182 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5183 if (!target_srv(&t->target)->cookie) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5184 len = sprintf(trash,
5185 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5186 t->be->cookie_name);
5187 }
5188 else {
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5189 len = sprintf(trash, "Set-Cookie: %s=%s", t->be->cookie_name, target_srv(&t->target)->cookie);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5190
5191 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5192 /* emit last_date, which is mandatory */
5193 trash[len++] = COOKIE_DELIM_DATE;
5194 s30tob64((date.tv_sec+3) >> 2, trash + len); len += 5;
5195 if (t->be->cookie_maxlife) {
5196 /* emit first_date, which is either the original one or
5197 * the current date.
5198 */
5199 trash[len++] = COOKIE_DELIM_DATE;
5200 s30tob64(txn->cookie_first_date ?
5201 txn->cookie_first_date >> 2 :
5202 (date.tv_sec+3) >> 2, trash + len);
5203 len += 5;
5204 }
5205 }
5206 len += sprintf(trash + len, "; path=/");
5207 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5208
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5209 if (t->be->cookie_domain)
5210 len += sprintf(trash+len, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5211
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5212 if (t->be->ck_opts & PR_CK_HTTPONLY)
5213 len += sprintf(trash+len, "; HttpOnly");
5214
5215 if (t->be->ck_opts & PR_CK_SECURE)
5216 len += sprintf(trash+len, "; Secure");
5217
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5218 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash, len) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5219 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5220
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5221 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5222 if (target_srv(&t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5223 /* the server did not change, only the date was updated */
5224 txn->flags |= TX_SCK_UPDATED;
5225 else
5226 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5227
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5228 /* Here, we will tell an eventual cache on the client side that we don't
5229 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5230 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5231 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5232 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5233 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5234
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5235 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5236
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5237 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5238 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5239 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5240 }
5241 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5242
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5243 /*
5244 * 7: check if result will be cacheable with a cookie.
5245 * We'll block the response if security checks have caught
5246 * nasty things such as a cacheable cookie.
5247 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5248 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5249 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5250 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5251
5252 /* we're in presence of a cacheable response containing
5253 * a set-cookie header. We'll block it as requested by
5254 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5255 */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5256 if (target_srv(&t->target))
5257 target_srv(&t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5258
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5259 t->be->be_counters.denied_resp++;
5260 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5261 if (t->listener->counters)
5262 t->listener->counters->denied_resp++;
5263
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5264 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5265 t->be->id, target_srv(&t->target) ? target_srv(&t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5266 send_log(t->be, LOG_ALERT,
5267 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5268 t->be->id, target_srv(&t->target) ? target_srv(&t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5269 goto return_srv_prx_502;
5270 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5271
5272 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5273 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5274 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5275 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5276 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE)) {
5277 unsigned int want_flags = 0;
5278
5279 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5280 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5281 /* we want a keep-alive response here. Keep-alive header
5282 * required if either side is not 1.1.
5283 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5284 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5285 want_flags |= TX_CON_KAL_SET;
5286 }
5287 else {
5288 /* we want a close response here. Close header required if
5289 * the server is 1.1, regardless of the client.
5290 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5291 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5292 want_flags |= TX_CON_CLO_SET;
5293 }
5294
5295 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5296 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5297 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5298
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5299 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5300 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5301 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5302 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5303
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5304 /*************************************************************
5305 * OK, that's finished for the headers. We have done what we *
5306 * could. Let's switch to the DATA state. *
5307 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5308
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5309 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5310
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5311 /* if the user wants to log as soon as possible, without counting
5312 * bytes from the server, then this is the right moment. We have
5313 * to temporarily assign bytes_out to log what we currently have.
5314 */
5315 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
5316 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5317 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5318 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5319 t->logs.bytes_out = 0;
5320 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5321
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5322 /* Note: we must not try to cheat by jumping directly to DATA,
5323 * otherwise we would not let the client side wake up.
5324 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5325
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5326 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5327 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5328 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5329}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5330
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5331/* This function is an analyser which forwards response body (including chunk
5332 * sizes if any). It is called as soon as we must forward, even if we forward
5333 * zero byte. The only situation where it must not be called is when we're in
5334 * tunnel mode and we want to forward till the close. It's used both to forward
5335 * remaining data and to resync after end of body. It expects the msg_state to
5336 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5337 * 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]5338 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5339 * bytes of pending data + the headers if not already done (between sol and sov).
5340 * 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]5341 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5342int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5343{
5344 struct http_txn *txn = &s->txn;
5345 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5346 unsigned int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5347
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5348 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5349 return 0;
5350
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5351 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]5352 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5353 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5354 /* Output closed while we were sending data. We must abort and
5355 * wake the other side up.
5356 */
5357 msg->msg_state = HTTP_MSG_ERROR;
5358 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5359 return 1;
5360 }
5361
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5362 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5363 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5364
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5365 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5366 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5367 * rep->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5368 * is still null. We must save the body in msg->next because it
5369 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5370 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]5371 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5372
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5373 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5374 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5375 else {
5376 msg->msg_state = HTTP_MSG_DATA;
5377 }
5378 }
5379
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5380 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5381 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5382 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5383 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]5384 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5385 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5386 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5387 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5388 msg->chunk_len -= channel_forward(res, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5389 }
5390
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5391 if (msg->msg_state == HTTP_MSG_DATA) {
5392 /* must still forward */
5393 if (res->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5394 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5395
5396 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5397 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5398 msg->msg_state = HTTP_MSG_DATA_CRLF;
5399 else
5400 msg->msg_state = HTTP_MSG_DONE;
5401 }
5402 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5403 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5404 * set ->sov and ->next to point to the body and switch to DATA or
5405 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5406 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5407 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5408
5409 if (!ret)
5410 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5411 else if (ret < 0) {
5412 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5413 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]5414 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5415 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5416 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5417 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5418 else if (msg->msg_state == HTTP_MSG_DATA_CRLF) {
5419 /* we want the CRLF after the data */
5420 int ret;
5421
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5422 ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5423
5424 if (!ret)
5425 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5426 else if (ret < 0) {
5427 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5428 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_DATA_CRLF, s->fe);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5429 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5430 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5431 /* we're in MSG_CHUNK_SIZE now */
5432 }
5433 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5434 int ret = http_forward_trailers(msg);
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5435
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5436 if (ret == 0)
5437 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5438 else if (ret < 0) {
5439 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5440 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]5441 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5442 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5443 /* we're in HTTP_MSG_DONE now */
5444 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5445 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5446 int old_state = msg->msg_state;
5447
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5448 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5449 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5450 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5451 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5452 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5453 if (http_resync_states(s)) {
5454 http_silent_debug(__LINE__, s);
5455 /* some state changes occurred, maybe the analyser
5456 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5457 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5458 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5459 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5460 /* response errors are most likely due to
5461 * the client aborting the transfer.
5462 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5463 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5464 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5465 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5466 http_capture_bad_message(&s->be->invalid_rep, s, msg, old_state, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5467 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5468 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5469 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5470 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5471 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5472 }
5473 }
5474
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5475 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5476 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5477 if (res->flags & CF_SHUTR) {
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5478 if (!(s->flags & SN_ERR_MASK))
5479 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5480 s->be->be_counters.srv_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5481 if (target_srv(&s->target))
5482 target_srv(&s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5483 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5484 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5485
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5486 if (res->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5487 goto aborted_xfer;
5488
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5489 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5490 if (!s->req->analysers)
5491 goto return_bad_res;
5492
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5493 /* forward any data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5494 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]5495 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5496 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5497 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5498 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5499 msg->chunk_len -= channel_forward(res, msg->chunk_len);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5500 }
5501
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5502 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5503 * 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]5504 * Similarly, with keep-alive on the client side, we don't want to forward a
5505 * close.
5506 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5507 if ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5508 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5509 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5510 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5511
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5512 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5513 * 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]5514 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5515 * modes are already handled by the stream sock layer. We must not do
5516 * this in content-length mode because it could present the MSG_MORE
5517 * flag with the last block of forwarded data, which would cause an
5518 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5519 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5520 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5521 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5522
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5523 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5524 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5525 return 0;
5526
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5527 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5528 s->be->be_counters.failed_resp++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5529 if (target_srv(&s->target))
5530 target_srv(&s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5531
5532 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5533 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]5534 /* don't send any error message as we're in the body */
5535 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5536 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5537 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5538 if (target_srv(&s->target))
5539 health_adjust(target_srv(&s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5540
5541 if (!(s->flags & SN_ERR_MASK))
5542 s->flags |= SN_ERR_PRXCOND;
5543 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5544 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5545 return 0;
5546
5547 aborted_xfer:
5548 txn->rsp.msg_state = HTTP_MSG_ERROR;
5549 /* don't send any error message as we're in the body */
5550 stream_int_retnclose(res->cons, NULL);
5551 res->analysers = 0;
5552 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
5553
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5554 s->fe->fe_counters.cli_aborts++;
5555 s->be->be_counters.cli_aborts++;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]5556 if (target_srv(&s->target))
5557 target_srv(&s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5558
5559 if (!(s->flags & SN_ERR_MASK))
5560 s->flags |= SN_ERR_CLICL;
5561 if (!(s->flags & SN_FINST_MASK))
5562 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5563 return 0;
5564}
5565
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5566/* Iterate the same filter through all request headers.
5567 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5568 * Since it can manage the switch to another backend, it updates the per-proxy
5569 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5570 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5571int 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]5572{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5573 char term;
5574 char *cur_ptr, *cur_end, *cur_next;
5575 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5576 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5577 struct hdr_idx_elem *cur_hdr;
5578 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]5579
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5580 last_hdr = 0;
5581
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5582 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5583 old_idx = 0;
5584
5585 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5586 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5587 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5588 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5589 (exp->action == ACT_ALLOW ||
5590 exp->action == ACT_DENY ||
5591 exp->action == ACT_TARPIT))
5592 return 0;
5593
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5594 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5595 if (!cur_idx)
5596 break;
5597
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5598 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5599 cur_ptr = cur_next;
5600 cur_end = cur_ptr + cur_hdr->len;
5601 cur_next = cur_end + cur_hdr->cr + 1;
5602
5603 /* Now we have one header between cur_ptr and cur_end,
5604 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5605 */
5606
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5607 /* The annoying part is that pattern matching needs
5608 * that we modify the contents to null-terminate all
5609 * strings before testing them.
5610 */
5611
5612 term = *cur_end;
5613 *cur_end = '\0';
5614
5615 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5616 switch (exp->action) {
5617 case ACT_SETBE:
5618 /* It is not possible to jump a second time.
5619 * FIXME: should we return an HTTP/500 here so that
5620 * the admin knows there's a problem ?
5621 */
5622 if (t->be != t->fe)
5623 break;
5624
5625 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]5626 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5627 last_hdr = 1;
5628 break;
5629
5630 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5631 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5632 last_hdr = 1;
5633 break;
5634
5635 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5636 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5637 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5638
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5639 t->fe->fe_counters.denied_req++;
5640 if (t->fe != t->be)
5641 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5642 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5643 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5644
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5645 break;
5646
5647 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5648 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5649 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5650
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5651 t->fe->fe_counters.denied_req++;
5652 if (t->fe != t->be)
5653 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5654 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5655 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5656
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5657 break;
5658
5659 case ACT_REPLACE:
5660 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5661 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash, len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5662 /* FIXME: if the user adds a newline in the replacement, the
5663 * index will not be recalculated for now, and the new line
5664 * will not be counted as a new header.
5665 */
5666
5667 cur_end += delta;
5668 cur_next += delta;
5669 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5670 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5671 break;
5672
5673 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5674 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5675 cur_next += delta;
5676
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5677 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5678 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
5679 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5680 cur_hdr->len = 0;
5681 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]5682 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5683 break;
5684
5685 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5686 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5687 if (cur_end)
5688 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5689
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5690 /* keep the link from this header to next one in case of later
5691 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5692 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5693 old_idx = cur_idx;
5694 }
5695 return 0;
5696}
5697
5698
5699/* Apply the filter to the request line.
5700 * Returns 0 if nothing has been done, 1 if the filter has been applied,
5701 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5702 * Since it can manage the switch to another backend, it updates the per-proxy
5703 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5704 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5705int 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]5706{
5707 char term;
5708 char *cur_ptr, *cur_end;
5709 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5710 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5711 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5712
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5713
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5714 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5715 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5716 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5717 (exp->action == ACT_ALLOW ||
5718 exp->action == ACT_DENY ||
5719 exp->action == ACT_TARPIT))
5720 return 0;
5721 else if (exp->action == ACT_REMOVE)
5722 return 0;
5723
5724 done = 0;
5725
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5726 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5727 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5728
5729 /* Now we have the request line between cur_ptr and cur_end */
5730
5731 /* The annoying part is that pattern matching needs
5732 * that we modify the contents to null-terminate all
5733 * strings before testing them.
5734 */
5735
5736 term = *cur_end;
5737 *cur_end = '\0';
5738
5739 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
5740 switch (exp->action) {
5741 case ACT_SETBE:
5742 /* It is not possible to jump a second time.
5743 * FIXME: should we return an HTTP/500 here so that
5744 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5745 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5746 if (t->be != t->fe)
5747 break;
5748
5749 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]5750 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5751 done = 1;
5752 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5753
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5754 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5755 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5756 done = 1;
5757 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5758
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5759 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5760 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5761
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5762 t->fe->fe_counters.denied_req++;
5763 if (t->fe != t->be)
5764 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5765 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5766 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5767
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5768 done = 1;
5769 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5770
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5771 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5772 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5773
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5774 t->fe->fe_counters.denied_req++;
5775 if (t->fe != t->be)
5776 t->be->be_counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5777 if (t->listener->counters)
Willy Tarreaubb695392010-06-23 08:43:37 +0200[diff] [blame]5778 t->listener->counters->denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5779
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5780 done = 1;
5781 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5782
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5783 case ACT_REPLACE:
5784 *cur_end = term; /* restore the string terminator */
5785 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5786 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash, len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5787 /* FIXME: if the user adds a newline in the replacement, the
5788 * index will not be recalculated for now, and the new line
5789 * will not be counted as a new header.
5790 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5791
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]5792 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5793 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]5794 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5795 HTTP_MSG_RQMETH,
5796 cur_ptr, cur_end + 1,
5797 NULL, NULL);
5798 if (unlikely(!cur_end))
5799 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]5800
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5801 /* we have a full request and we know that we have either a CR
5802 * or an LF at <ptr>.
5803 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5804 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
5805 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]5806 /* there is no point trying this regex on headers */
5807 return 1;
5808 }
5809 }
5810 *cur_end = term; /* restore the string terminator */
5811 return done;
5812}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]5813
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5814
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5815
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5816/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5817 * 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]5818 * 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]5819 * unparsable request. Since it can manage the switch to another backend, it
5820 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5821 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5822int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5823{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5824 struct http_txn *txn = &s->txn;
5825 struct hdr_exp *exp;
5826
5827 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5828 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5829
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5830 /*
5831 * The interleaving of transformations and verdicts
5832 * makes it difficult to decide to continue or stop
5833 * the evaluation.
5834 */
5835
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5836 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
5837 break;
5838
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5839 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5840 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5841 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5842 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5843
5844 /* if this filter had a condition, evaluate it now and skip to
5845 * next filter if the condition does not match.
5846 */
5847 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5848 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]5849 ret = acl_pass(ret);
5850 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
5851 ret = !ret;
5852
5853 if (!ret)
5854 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5855 }
5856
5857 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5858 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5859 if (unlikely(ret < 0))
5860 return -1;
5861
5862 if (likely(ret == 0)) {
5863 /* The filter did not match the request, it can be
5864 * iterated through all headers.
5865 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]5866 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5867 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5868 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5869 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5870}
5871
5872
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5873
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5874/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5875 * Try to retrieve the server associated to the appsession.
5876 * If the server is found, it's assigned to the session.
5877 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5878void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5879 struct http_txn *txn = &t->txn;
5880 appsess *asession = NULL;
5881 char *sessid_temp = NULL;
5882
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5883 if (len > t->be->appsession_len) {
5884 len = t->be->appsession_len;
5885 }
5886
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5887 if (t->be->options2 & PR_O2_AS_REQL) {
5888 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]5889 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5890 /* 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]5891 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5892 }
5893
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]5894 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5895 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
5896 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
5897 return;
5898 }
5899
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]5900 memcpy(txn->sessid, buf, len);
5901 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5902 }
5903
5904 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
5905 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
5906 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
5907 return;
5908 }
5909
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]5910 memcpy(sessid_temp, buf, len);
5911 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5912
5913 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
5914 /* free previously allocated memory */
5915 pool_free2(apools.sessid, sessid_temp);
5916
5917 if (asession != NULL) {
5918 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
5919 if (!(t->be->options2 & PR_O2_AS_REQL))
5920 asession->request_count++;
5921
5922 if (asession->serverid != NULL) {
5923 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5924
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5925 while (srv) {
5926 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]5927 if ((srv->state & SRV_RUNNING) ||
5928 (t->be->options & PR_O_PERSIST) ||
5929 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5930 /* we found the server and it's usable */
5931 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]5932 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5933 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]5934 set_target_server(&t->target, srv);
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]5935
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]5936 break;
5937 } else {
5938 txn->flags &= ~TX_CK_MASK;
5939 txn->flags |= TX_CK_DOWN;
5940 }
5941 }
5942 srv = srv->next;
5943 }
5944 }
5945 }
5946}
5947
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5948/* Find the end of a cookie value contained between <s> and <e>. It works the
5949 * same way as with headers above except that the semi-colon also ends a token.
5950 * See RFC2965 for more information. Note that it requires a valid header to
5951 * return a valid result.
5952 */
5953char *find_cookie_value_end(char *s, const char *e)
5954{
5955 int quoted, qdpair;
5956
5957 quoted = qdpair = 0;
5958 for (; s < e; s++) {
5959 if (qdpair) qdpair = 0;
5960 else if (quoted) {
5961 if (*s == '\\') qdpair = 1;
5962 else if (*s == '"') quoted = 0;
5963 }
5964 else if (*s == '"') quoted = 1;
5965 else if (*s == ',' || *s == ';') return s;
5966 }
5967 return s;
5968}
5969
5970/* Delete a value in a header between delimiters <from> and <next> in buffer
5971 * <buf>. The number of characters displaced is returned, and the pointer to
5972 * the first delimiter is updated if required. The function tries as much as
5973 * possible to respect the following principles :
5974 * - replace <from> delimiter by the <next> one unless <from> points to a
5975 * colon, in which case <next> is simply removed
5976 * - set exactly one space character after the new first delimiter, unless
5977 * there are not enough characters in the block being moved to do so.
5978 * - remove unneeded spaces before the previous delimiter and after the new
5979 * one.
5980 *
5981 * It is the caller's responsibility to ensure that :
5982 * - <from> points to a valid delimiter or the colon ;
5983 * - <next> points to a valid delimiter or the final CR/LF ;
5984 * - there are non-space chars before <from> ;
5985 * - there is a CR/LF at or after <next>.
5986 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]5987int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]5988{
5989 char *prev = *from;
5990
5991 if (*prev == ':') {
5992 /* We're removing the first value, preserve the colon and add a
5993 * space if possible.
5994 */
5995 if (!http_is_crlf[(unsigned char)*next])
5996 next++;
5997 prev++;
5998 if (prev < next)
5999 *prev++ = ' ';
6000
6001 while (http_is_spht[(unsigned char)*next])
6002 next++;
6003 } else {
6004 /* Remove useless spaces before the old delimiter. */
6005 while (http_is_spht[(unsigned char)*(prev-1)])
6006 prev--;
6007 *from = prev;
6008
6009 /* copy the delimiter and if possible a space if we're
6010 * not at the end of the line.
6011 */
6012 if (!http_is_crlf[(unsigned char)*next]) {
6013 *prev++ = *next++;
6014 if (prev + 1 < next)
6015 *prev++ = ' ';
6016 while (http_is_spht[(unsigned char)*next])
6017 next++;
6018 }
6019 }
6020 return buffer_replace2(buf, prev, next, NULL, 0);
6021}
6022
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6023/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6024 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6025 * desirable to call it only when needed. This code is quite complex because
6026 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6027 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6028 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6029void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6030{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6031 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6032 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6033 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6034 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6035 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6036
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6037 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6038 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6039 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6040
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6041 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6042 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6043 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6044
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6045 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6046 hdr_beg = hdr_next;
6047 hdr_end = hdr_beg + cur_hdr->len;
6048 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6049
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6050 /* We have one full header between hdr_beg and hdr_end, and the
6051 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6052 * "Cookie:" headers.
6053 */
6054
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6055 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6056 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6057 old_idx = cur_idx;
6058 continue;
6059 }
6060
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6061 del_from = NULL; /* nothing to be deleted */
6062 preserve_hdr = 0; /* assume we may kill the whole header */
6063
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6064 /* Now look for cookies. Conforming to RFC2109, we have to support
6065 * attributes whose name begin with a '$', and associate them with
6066 * the right cookie, if we want to delete this cookie.
6067 * So there are 3 cases for each cookie read :
6068 * 1) it's a special attribute, beginning with a '$' : ignore it.
6069 * 2) it's a server id cookie that we *MAY* want to delete : save
6070 * some pointers on it (last semi-colon, beginning of cookie...)
6071 * 3) it's an application cookie : we *MAY* have to delete a previous
6072 * "special" cookie.
6073 * At the end of loop, if a "special" cookie remains, we may have to
6074 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6075 * *MUST* delete it.
6076 *
6077 * Note: RFC2965 is unclear about the processing of spaces around
6078 * the equal sign in the ATTR=VALUE form. A careful inspection of
6079 * the RFC explicitly allows spaces before it, and not within the
6080 * tokens (attrs or values). An inspection of RFC2109 allows that
6081 * too but section 10.1.3 lets one think that spaces may be allowed
6082 * after the equal sign too, resulting in some (rare) buggy
6083 * implementations trying to do that. So let's do what servers do.
6084 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6085 * allowed quoted strings in values, with any possible character
6086 * after a backslash, including control chars and delimitors, which
6087 * causes parsing to become ambiguous. Browsers also allow spaces
6088 * within values even without quotes.
6089 *
6090 * We have to keep multiple pointers in order to support cookie
6091 * removal at the beginning, middle or end of header without
6092 * corrupting the header. All of these headers are valid :
6093 *
6094 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6095 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6096 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6097 * | | | | | | | | |
6098 * | | | | | | | | hdr_end <--+
6099 * | | | | | | | +--> next
6100 * | | | | | | +----> val_end
6101 * | | | | | +-----------> val_beg
6102 * | | | | +--------------> equal
6103 * | | | +----------------> att_end
6104 * | | +---------------------> att_beg
6105 * | +--------------------------> prev
6106 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6107 */
6108
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6109 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6110 /* Iterate through all cookies on this line */
6111
6112 /* find att_beg */
6113 att_beg = prev + 1;
6114 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6115 att_beg++;
6116
6117 /* find att_end : this is the first character after the last non
6118 * space before the equal. It may be equal to hdr_end.
6119 */
6120 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6121
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6122 while (equal < hdr_end) {
6123 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6124 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6125 if (http_is_spht[(unsigned char)*equal++])
6126 continue;
6127 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6128 }
6129
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6130 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6131 * is between <att_beg> and <equal>, both may be identical.
6132 */
6133
6134 /* look for end of cookie if there is an equal sign */
6135 if (equal < hdr_end && *equal == '=') {
6136 /* look for the beginning of the value */
6137 val_beg = equal + 1;
6138 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6139 val_beg++;
6140
6141 /* find the end of the value, respecting quotes */
6142 next = find_cookie_value_end(val_beg, hdr_end);
6143
6144 /* make val_end point to the first white space or delimitor after the value */
6145 val_end = next;
6146 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6147 val_end--;
6148 } else {
6149 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6150 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6151
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6152 /* We have nothing to do with attributes beginning with '$'. However,
6153 * they will automatically be removed if a header before them is removed,
6154 * since they're supposed to be linked together.
6155 */
6156 if (*att_beg == '$')
6157 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6158
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6159 /* Ignore cookies with no equal sign */
6160 if (equal == next) {
6161 /* This is not our cookie, so we must preserve it. But if we already
6162 * scheduled another cookie for removal, we cannot remove the
6163 * complete header, but we can remove the previous block itself.
6164 */
6165 preserve_hdr = 1;
6166 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6167 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6168 val_end += delta;
6169 next += delta;
6170 hdr_end += delta;
6171 hdr_next += delta;
6172 cur_hdr->len += delta;
6173 http_msg_move_end(&txn->req, delta);
6174 prev = del_from;
6175 del_from = NULL;
6176 }
6177 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6178 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6179
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6180 /* if there are spaces around the equal sign, we need to
6181 * strip them otherwise we'll get trouble for cookie captures,
6182 * or even for rewrites. Since this happens extremely rarely,
6183 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6184 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6185 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6186 int stripped_before = 0;
6187 int stripped_after = 0;
6188
6189 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6190 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6191 equal += stripped_before;
6192 val_beg += stripped_before;
6193 }
6194
6195 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6196 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6197 val_beg += stripped_after;
6198 stripped_before += stripped_after;
6199 }
6200
6201 val_end += stripped_before;
6202 next += stripped_before;
6203 hdr_end += stripped_before;
6204 hdr_next += stripped_before;
6205 cur_hdr->len += stripped_before;
6206 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6207 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6208 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6209
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6210 /* First, let's see if we want to capture this cookie. We check
6211 * that we don't already have a client side cookie, because we
6212 * can only capture one. Also as an optimisation, we ignore
6213 * cookies shorter than the declared name.
6214 */
6215 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6216 (val_end - att_beg >= t->fe->capture_namelen) &&
6217 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6218 int log_len = val_end - att_beg;
6219
6220 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6221 Alert("HTTP logging : out of memory.\n");
6222 } else {
6223 if (log_len > t->fe->capture_len)
6224 log_len = t->fe->capture_len;
6225 memcpy(txn->cli_cookie, att_beg, log_len);
6226 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6227 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6228 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6229
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6230 /* Persistence cookies in passive, rewrite or insert mode have the
6231 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6232 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6233 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6234 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6235 * For cookies in prefix mode, the form is :
6236 *
6237 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6238 */
6239 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6240 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6241 struct server *srv = t->be->srv;
6242 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6243
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6244 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6245 * have the server ID between val_beg and delim, and the original cookie between
6246 * delim+1 and val_end. Otherwise, delim==val_end :
6247 *
6248 * Cookie: NAME=SRV; # in all but prefix modes
6249 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6250 * | || || | |+-> next
6251 * | || || | +--> val_end
6252 * | || || +---------> delim
6253 * | || |+------------> val_beg
6254 * | || +-------------> att_end = equal
6255 * | |+-----------------> att_beg
6256 * | +------------------> prev
6257 * +-------------------------> hdr_beg
6258 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6259
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6260 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6261 for (delim = val_beg; delim < val_end; delim++)
6262 if (*delim == COOKIE_DELIM)
6263 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6264 } else {
6265 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6266 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6267 /* Now check if the cookie contains a date field, which would
6268 * appear after a vertical bar ('|') just after the server name
6269 * and before the delimiter.
6270 */
6271 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6272 if (vbar1) {
6273 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6274 * right is the last seen date. It is a base64 encoded
6275 * 30-bit value representing the UNIX date since the
6276 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6277 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6278 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6279 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6280 if (val_end - vbar1 >= 5) {
6281 val = b64tos30(vbar1);
6282 if (val > 0)
6283 txn->cookie_last_date = val << 2;
6284 }
6285 /* look for a second vertical bar */
6286 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6287 if (vbar1 && (val_end - vbar1 > 5)) {
6288 val = b64tos30(vbar1 + 1);
6289 if (val > 0)
6290 txn->cookie_first_date = val << 2;
6291 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6292 }
6293 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6294
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6295 /* if the cookie has an expiration date and the proxy wants to check
6296 * it, then we do that now. We first check if the cookie is too old,
6297 * then only if it has expired. We detect strict overflow because the
6298 * time resolution here is not great (4 seconds). Cookies with dates
6299 * in the future are ignored if their offset is beyond one day. This
6300 * allows an admin to fix timezone issues without expiring everyone
6301 * and at the same time avoids keeping unwanted side effects for too
6302 * long.
6303 */
6304 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6305 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6306 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6307 txn->flags &= ~TX_CK_MASK;
6308 txn->flags |= TX_CK_OLD;
6309 delim = val_beg; // let's pretend we have not found the cookie
6310 txn->cookie_first_date = 0;
6311 txn->cookie_last_date = 0;
6312 }
6313 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6314 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6315 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6316 txn->flags &= ~TX_CK_MASK;
6317 txn->flags |= TX_CK_EXPIRED;
6318 delim = val_beg; // let's pretend we have not found the cookie
6319 txn->cookie_first_date = 0;
6320 txn->cookie_last_date = 0;
6321 }
6322
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6323 /* Here, we'll look for the first running server which supports the cookie.
6324 * This allows to share a same cookie between several servers, for example
6325 * to dedicate backup servers to specific servers only.
6326 * However, to prevent clients from sticking to cookie-less backup server
6327 * when they have incidentely learned an empty cookie, we simply ignore
6328 * empty cookies and mark them as invalid.
6329 * The same behaviour is applied when persistence must be ignored.
6330 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6331 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6332 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6333
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6334 while (srv) {
6335 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6336 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6337 if ((srv->state & SRV_RUNNING) ||
6338 (t->be->options & PR_O_PERSIST) ||
6339 (t->flags & SN_FORCE_PRST)) {
6340 /* we found the server and we can use it */
6341 txn->flags &= ~TX_CK_MASK;
6342 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6343 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]6344 set_target_server(&t->target, srv);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6345 break;
6346 } else {
6347 /* we found a server, but it's down,
6348 * mark it as such and go on in case
6349 * another one is available.
6350 */
6351 txn->flags &= ~TX_CK_MASK;
6352 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6353 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6354 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6355 srv = srv->next;
6356 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6357
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6358 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6359 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6360 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6361 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6362 txn->flags |= TX_CK_UNUSED;
6363 else
6364 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6365 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6366
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6367 /* depending on the cookie mode, we may have to either :
6368 * - delete the complete cookie if we're in insert+indirect mode, so that
6369 * the server never sees it ;
6370 * - remove the server id from the cookie value, and tag the cookie as an
6371 * application cookie so that it does not get accidentely removed later,
6372 * if we're in cookie prefix mode
6373 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6374 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6375 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6376
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6377 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6378 val_end += delta;
6379 next += delta;
6380 hdr_end += delta;
6381 hdr_next += delta;
6382 cur_hdr->len += delta;
6383 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6384
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6385 del_from = NULL;
6386 preserve_hdr = 1; /* we want to keep this cookie */
6387 }
6388 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6389 (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]6390 del_from = prev;
6391 }
6392 } else {
6393 /* This is not our cookie, so we must preserve it. But if we already
6394 * scheduled another cookie for removal, we cannot remove the
6395 * complete header, but we can remove the previous block itself.
6396 */
6397 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6398
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6399 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6400 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]6401 if (att_beg >= del_from)
6402 att_beg += delta;
6403 if (att_end >= del_from)
6404 att_end += delta;
6405 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6406 val_end += delta;
6407 next += delta;
6408 hdr_end += delta;
6409 hdr_next += delta;
6410 cur_hdr->len += delta;
6411 http_msg_move_end(&txn->req, delta);
6412 prev = del_from;
6413 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6414 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6415 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6416
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6417 /* Look for the appsession cookie unless persistence must be ignored */
6418 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
6419 int cmp_len, value_len;
6420 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]6421
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6422 if (t->be->options2 & PR_O2_AS_PFX) {
6423 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6424 value_begin = att_beg + t->be->appsession_name_len;
6425 value_len = val_end - att_beg - t->be->appsession_name_len;
6426 } else {
6427 cmp_len = att_end - att_beg;
6428 value_begin = val_beg;
6429 value_len = val_end - val_beg;
6430 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6431
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6432 /* let's see if the cookie is our appcookie */
6433 if (cmp_len == t->be->appsession_name_len &&
6434 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
6435 manage_client_side_appsession(t, value_begin, value_len);
6436 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6437 }
6438
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6439 /* continue with next cookie on this header line */
6440 att_beg = next;
6441 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6442
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6443 /* There are no more cookies on this line.
6444 * We may still have one (or several) marked for deletion at the
6445 * end of the line. We must do this now in two ways :
6446 * - if some cookies must be preserved, we only delete from the
6447 * mark to the end of line ;
6448 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6449 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6450 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6451 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6452 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6453 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6454 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6455 cur_hdr->len += delta;
6456 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6457 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6458
6459 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6460 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6461 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6462 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6463 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6464 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6465 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6466 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6467 }
6468
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6469 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6470 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6471 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6472}
6473
6474
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6475/* Iterate the same filter through all response headers contained in <rtr>.
6476 * Returns 1 if this filter can be stopped upon return, otherwise 0.
6477 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6478int 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]6479{
6480 char term;
6481 char *cur_ptr, *cur_end, *cur_next;
6482 int cur_idx, old_idx, last_hdr;
6483 struct http_txn *txn = &t->txn;
6484 struct hdr_idx_elem *cur_hdr;
6485 int len, delta;
6486
6487 last_hdr = 0;
6488
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6489 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6490 old_idx = 0;
6491
6492 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6493 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6494 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6495 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6496 (exp->action == ACT_ALLOW ||
6497 exp->action == ACT_DENY))
6498 return 0;
6499
6500 cur_idx = txn->hdr_idx.v[old_idx].next;
6501 if (!cur_idx)
6502 break;
6503
6504 cur_hdr = &txn->hdr_idx.v[cur_idx];
6505 cur_ptr = cur_next;
6506 cur_end = cur_ptr + cur_hdr->len;
6507 cur_next = cur_end + cur_hdr->cr + 1;
6508
6509 /* Now we have one header between cur_ptr and cur_end,
6510 * and the next header starts at cur_next.
6511 */
6512
6513 /* The annoying part is that pattern matching needs
6514 * that we modify the contents to null-terminate all
6515 * strings before testing them.
6516 */
6517
6518 term = *cur_end;
6519 *cur_end = '\0';
6520
6521 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6522 switch (exp->action) {
6523 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6524 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6525 last_hdr = 1;
6526 break;
6527
6528 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6529 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6530 last_hdr = 1;
6531 break;
6532
6533 case ACT_REPLACE:
6534 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6535 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash, len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6536 /* FIXME: if the user adds a newline in the replacement, the
6537 * index will not be recalculated for now, and the new line
6538 * will not be counted as a new header.
6539 */
6540
6541 cur_end += delta;
6542 cur_next += delta;
6543 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6544 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6545 break;
6546
6547 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6548 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6549 cur_next += delta;
6550
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6551 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6552 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6553 txn->hdr_idx.used--;
6554 cur_hdr->len = 0;
6555 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6556 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6557 break;
6558
6559 }
6560 }
6561 if (cur_end)
6562 *cur_end = term; /* restore the string terminator */
6563
6564 /* keep the link from this header to next one in case of later
6565 * removal of next header.
6566 */
6567 old_idx = cur_idx;
6568 }
6569 return 0;
6570}
6571
6572
6573/* Apply the filter to the status line in the response buffer <rtr>.
6574 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6575 * or -1 if a replacement resulted in an invalid status line.
6576 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6577int 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]6578{
6579 char term;
6580 char *cur_ptr, *cur_end;
6581 int done;
6582 struct http_txn *txn = &t->txn;
6583 int len, delta;
6584
6585
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6586 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6587 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6588 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6589 (exp->action == ACT_ALLOW ||
6590 exp->action == ACT_DENY))
6591 return 0;
6592 else if (exp->action == ACT_REMOVE)
6593 return 0;
6594
6595 done = 0;
6596
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6597 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]6598 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6599
6600 /* Now we have the status line between cur_ptr and cur_end */
6601
6602 /* The annoying part is that pattern matching needs
6603 * that we modify the contents to null-terminate all
6604 * strings before testing them.
6605 */
6606
6607 term = *cur_end;
6608 *cur_end = '\0';
6609
6610 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6611 switch (exp->action) {
6612 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6613 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6614 done = 1;
6615 break;
6616
6617 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6618 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6619 done = 1;
6620 break;
6621
6622 case ACT_REPLACE:
6623 *cur_end = term; /* restore the string terminator */
6624 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6625 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash, len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6626 /* FIXME: if the user adds a newline in the replacement, the
6627 * index will not be recalculated for now, and the new line
6628 * will not be counted as a new header.
6629 */
6630
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6631 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6632 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6633 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]6634 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6635 cur_ptr, cur_end + 1,
6636 NULL, NULL);
6637 if (unlikely(!cur_end))
6638 return -1;
6639
6640 /* we have a full respnse and we know that we have either a CR
6641 * or an LF at <ptr>.
6642 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6643 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]6644 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]6645 /* there is no point trying this regex on headers */
6646 return 1;
6647 }
6648 }
6649 *cur_end = term; /* restore the string terminator */
6650 return done;
6651}
6652
6653
6654
6655/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6656 * 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]6657 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
6658 * unparsable response.
6659 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6660int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6661{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6662 struct http_txn *txn = &s->txn;
6663 struct hdr_exp *exp;
6664
6665 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6666 int ret;
6667
6668 /*
6669 * The interleaving of transformations and verdicts
6670 * makes it difficult to decide to continue or stop
6671 * the evaluation.
6672 */
6673
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6674 if (txn->flags & TX_SVDENY)
6675 break;
6676
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6677 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6678 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
6679 exp->action == ACT_PASS)) {
6680 exp = exp->next;
6681 continue;
6682 }
6683
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6684 /* if this filter had a condition, evaluate it now and skip to
6685 * next filter if the condition does not match.
6686 */
6687 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6688 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]6689 ret = acl_pass(ret);
6690 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6691 ret = !ret;
6692 if (!ret)
6693 continue;
6694 }
6695
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6696 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6697 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6698 if (unlikely(ret < 0))
6699 return -1;
6700
6701 if (likely(ret == 0)) {
6702 /* The filter did not match the response, it can be
6703 * iterated through all headers.
6704 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]6705 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6706 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6707 }
6708 return 0;
6709}
6710
6711
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6712/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6713 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6714 * desirable to call it only when needed. This function is also used when we
6715 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6716 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6717void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6718{
6719 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6720 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6721 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6722 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6723 char *hdr_beg, *hdr_end, *hdr_next;
6724 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6725
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6726 /* Iterate through the headers.
6727 * we start with the start line.
6728 */
6729 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6730 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6731
6732 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
6733 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6734 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6735
6736 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6737 hdr_beg = hdr_next;
6738 hdr_end = hdr_beg + cur_hdr->len;
6739 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6740
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6741 /* We have one full header between hdr_beg and hdr_end, and the
6742 * next header starts at hdr_next. We're only interested in
6743 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6744 */
6745
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6746 is_cookie2 = 0;
6747 prev = hdr_beg + 10;
6748 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6749 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6750 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
6751 if (!val) {
6752 old_idx = cur_idx;
6753 continue;
6754 }
6755 is_cookie2 = 1;
6756 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6757 }
6758
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6759 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
6760 * <prev> points to the colon.
6761 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6762 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6763
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6764 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
6765 * check-cache is enabled) and we are not interested in checking
6766 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]6767 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]6768 if (t->be->cookie_name == NULL &&
6769 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]6770 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6771 return;
6772
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6773 /* OK so now we know we have to process this response cookie.
6774 * The format of the Set-Cookie header is slightly different
6775 * from the format of the Cookie header in that it does not
6776 * support the comma as a cookie delimiter (thus the header
6777 * cannot be folded) because the Expires attribute described in
6778 * the original Netscape's spec may contain an unquoted date
6779 * with a comma inside. We have to live with this because
6780 * many browsers don't support Max-Age and some browsers don't
6781 * support quoted strings. However the Set-Cookie2 header is
6782 * clean.
6783 *
6784 * We have to keep multiple pointers in order to support cookie
6785 * removal at the beginning, middle or end of header without
6786 * corrupting the header (in case of set-cookie2). A special
6787 * pointer, <scav> points to the beginning of the set-cookie-av
6788 * fields after the first semi-colon. The <next> pointer points
6789 * either to the end of line (set-cookie) or next unquoted comma
6790 * (set-cookie2). All of these headers are valid :
6791 *
6792 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
6793 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
6794 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
6795 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
6796 * | | | | | | | | | |
6797 * | | | | | | | | +-> next hdr_end <--+
6798 * | | | | | | | +------------> scav
6799 * | | | | | | +--------------> val_end
6800 * | | | | | +--------------------> val_beg
6801 * | | | | +----------------------> equal
6802 * | | | +------------------------> att_end
6803 * | | +----------------------------> att_beg
6804 * | +------------------------------> prev
6805 * +-----------------------------------------> hdr_beg
6806 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6807
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6808 for (; prev < hdr_end; prev = next) {
6809 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6810
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6811 /* find att_beg */
6812 att_beg = prev + 1;
6813 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6814 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6815
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6816 /* find att_end : this is the first character after the last non
6817 * space before the equal. It may be equal to hdr_end.
6818 */
6819 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6820
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6821 while (equal < hdr_end) {
6822 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
6823 break;
6824 if (http_is_spht[(unsigned char)*equal++])
6825 continue;
6826 att_end = equal;
6827 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6828
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6829 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6830 * is between <att_beg> and <equal>, both may be identical.
6831 */
6832
6833 /* look for end of cookie if there is an equal sign */
6834 if (equal < hdr_end && *equal == '=') {
6835 /* look for the beginning of the value */
6836 val_beg = equal + 1;
6837 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6838 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6839
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6840 /* find the end of the value, respecting quotes */
6841 next = find_cookie_value_end(val_beg, hdr_end);
6842
6843 /* make val_end point to the first white space or delimitor after the value */
6844 val_end = next;
6845 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6846 val_end--;
6847 } else {
6848 /* <equal> points to next comma, semi-colon or EOL */
6849 val_beg = val_end = next = equal;
6850 }
6851
6852 if (next < hdr_end) {
6853 /* Set-Cookie2 supports multiple cookies, and <next> points to
6854 * a colon or semi-colon before the end. So skip all attr-value
6855 * pairs and look for the next comma. For Set-Cookie, since
6856 * commas are permitted in values, skip to the end.
6857 */
6858 if (is_cookie2)
6859 next = find_hdr_value_end(next, hdr_end);
6860 else
6861 next = hdr_end;
6862 }
6863
6864 /* Now everything is as on the diagram above */
6865
6866 /* Ignore cookies with no equal sign */
6867 if (equal == val_end)
6868 continue;
6869
6870 /* If there are spaces around the equal sign, we need to
6871 * strip them otherwise we'll get trouble for cookie captures,
6872 * or even for rewrites. Since this happens extremely rarely,
6873 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6874 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6875 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6876 int stripped_before = 0;
6877 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6878
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6879 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6880 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6881 equal += stripped_before;
6882 val_beg += stripped_before;
6883 }
6884
6885 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6886 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6887 val_beg += stripped_after;
6888 stripped_before += stripped_after;
6889 }
6890
6891 val_end += stripped_before;
6892 next += stripped_before;
6893 hdr_end += stripped_before;
6894 hdr_next += stripped_before;
6895 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]6896 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6897 }
6898
6899 /* First, let's see if we want to capture this cookie. We check
6900 * that we don't already have a server side cookie, because we
6901 * can only capture one. Also as an optimisation, we ignore
6902 * cookies shorter than the declared name.
6903 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]6904 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]6905 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6906 (val_end - att_beg >= t->fe->capture_namelen) &&
6907 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6908 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]6909 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6910 Alert("HTTP logging : out of memory.\n");
6911 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]6912 else {
6913 if (log_len > t->fe->capture_len)
6914 log_len = t->fe->capture_len;
6915 memcpy(txn->srv_cookie, att_beg, log_len);
6916 txn->srv_cookie[log_len] = 0;
6917 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6918 }
6919
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6920 srv = target_srv(&t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6921 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6922 if (!(t->flags & SN_IGNORE_PRST) &&
6923 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6924 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6925 /* assume passive cookie by default */
6926 txn->flags &= ~TX_SCK_MASK;
6927 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6928
6929 /* If the cookie is in insert mode on a known server, we'll delete
6930 * this occurrence because we'll insert another one later.
6931 * 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]6932 * a direct access.
6933 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6934 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]6935 /* The "preserve" flag was set, we don't want to touch the
6936 * server's cookie.
6937 */
6938 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6939 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
6940 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6941 /* this cookie must be deleted */
6942 if (*prev == ':' && next == hdr_end) {
6943 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6944 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6945 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6946 txn->hdr_idx.used--;
6947 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6948 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6949 hdr_next += delta;
6950 http_msg_move_end(&txn->rsp, delta);
6951 /* note: while both invalid now, <next> and <hdr_end>
6952 * are still equal, so the for() will stop as expected.
6953 */
6954 } else {
6955 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6956 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6957 next = prev;
6958 hdr_end += delta;
6959 hdr_next += delta;
6960 cur_hdr->len += delta;
6961 http_msg_move_end(&txn->rsp, delta);
6962 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6963 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6964 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6965 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6966 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6967 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6968 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6969 * with this server since we know it.
6970 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6971 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6972 next += delta;
6973 hdr_end += delta;
6974 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6975 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6976 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6977
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6978 txn->flags &= ~TX_SCK_MASK;
6979 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6980 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]6981 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6982 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6983 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6984 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6985 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]6986 next += delta;
6987 hdr_end += delta;
6988 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6989 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6990 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6991
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]6992 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6993 txn->flags &= ~TX_SCK_MASK;
6994 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6995 }
6996 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6997 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
6998 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6999 int cmp_len, value_len;
7000 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7001
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7002 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7003 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7004 value_begin = att_beg + t->be->appsession_name_len;
7005 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]7006 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7007 cmp_len = att_end - att_beg;
7008 value_begin = val_beg;
7009 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7010 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7011
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7012 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7013 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7014 /* free a possibly previously allocated memory */
7015 pool_free2(apools.sessid, txn->sessid);
7016
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7017 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7018 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7019 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7020 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7021 return;
7022 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7023 memcpy(txn->sessid, value_begin, value_len);
7024 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7025 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7026 }
7027 /* that's done for this cookie, check the next one on the same
7028 * line when next != hdr_end (only if is_cookie2).
7029 */
7030 }
7031 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7032 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7033 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7034
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7035 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7036 appsess *asession = NULL;
7037 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7038 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7039 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7040 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7041 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7042 Alert("Not enough Memory process_srv():asession:calloc().\n");
7043 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7044 return;
7045 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7046 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7047
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7048 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7049 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7050 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]7051 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7052 return;
7053 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7054 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7055 asession->sessid[t->be->appsession_len] = 0;
7056
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7057 server_id_len = strlen(target_srv(&t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7058 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7059 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7060 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]7061 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7062 return;
7063 }
7064 asession->serverid[0] = '\0';
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7065 memcpy(asession->serverid, target_srv(&t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7066
7067 asession->request_count = 0;
7068 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7069 }
7070
7071 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7072 asession->request_count++;
7073 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7074}
7075
7076
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7077/*
7078 * Check if response is cacheable or not. Updates t->flags.
7079 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7080void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7081{
7082 struct http_txn *txn = &t->txn;
7083 char *p1, *p2;
7084
7085 char *cur_ptr, *cur_end, *cur_next;
7086 int cur_idx;
7087
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7088 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7089 return;
7090
7091 /* Iterate through the headers.
7092 * we start with the start line.
7093 */
7094 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7095 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7096
7097 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7098 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7099 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7100
7101 cur_hdr = &txn->hdr_idx.v[cur_idx];
7102 cur_ptr = cur_next;
7103 cur_end = cur_ptr + cur_hdr->len;
7104 cur_next = cur_end + cur_hdr->cr + 1;
7105
7106 /* We have one full header between cur_ptr and cur_end, and the
7107 * next header starts at cur_next. We're only interested in
7108 * "Cookie:" headers.
7109 */
7110
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7111 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7112 if (val) {
7113 if ((cur_end - (cur_ptr + val) >= 8) &&
7114 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7115 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7116 return;
7117 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7118 }
7119
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7120 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7121 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7122 continue;
7123
7124 /* OK, right now we know we have a cache-control header at cur_ptr */
7125
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7126 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7127
7128 if (p1 >= cur_end) /* no more info */
7129 continue;
7130
7131 /* p1 is at the beginning of the value */
7132 p2 = p1;
7133
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7134 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7135 p2++;
7136
7137 /* we have a complete value between p1 and p2 */
7138 if (p2 < cur_end && *p2 == '=') {
7139 /* we have something of the form no-cache="set-cookie" */
7140 if ((cur_end - p1 >= 21) &&
7141 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7142 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7143 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7144 continue;
7145 }
7146
7147 /* OK, so we know that either p2 points to the end of string or to a comma */
7148 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
7149 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7150 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7151 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7152 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7153 return;
7154 }
7155
7156 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7157 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7158 continue;
7159 }
7160 }
7161}
7162
7163
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7164/*
7165 * Try to retrieve a known appsession in the URI, then the associated server.
7166 * If the server is found, it's assigned to the session.
7167 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7168void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7169{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7170 char *end_params, *first_param, *cur_param, *next_param;
7171 char separator;
7172 int value_len;
7173
7174 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7175
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7176 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7177 (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]7178 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7179 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7180
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7181 first_param = NULL;
7182 switch (mode) {
7183 case PR_O2_AS_M_PP:
7184 first_param = memchr(begin, ';', len);
7185 break;
7186 case PR_O2_AS_M_QS:
7187 first_param = memchr(begin, '?', len);
7188 break;
7189 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7190
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7191 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7192 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7193 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7194
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7195 switch (mode) {
7196 case PR_O2_AS_M_PP:
7197 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7198 end_params = (char *) begin + len;
7199 }
7200 separator = ';';
7201 break;
7202 case PR_O2_AS_M_QS:
7203 end_params = (char *) begin + len;
7204 separator = '&';
7205 break;
7206 default:
7207 /* unknown mode, shouldn't happen */
7208 return;
7209 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7210
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7211 cur_param = next_param = end_params;
7212 while (cur_param > first_param) {
7213 cur_param--;
7214 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7215 /* let's see if this is the appsession parameter */
7216 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7217 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7218 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7219 /* Cool... it's the right one */
7220 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7221 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7222 if (value_len > 0) {
7223 manage_client_side_appsession(t, cur_param, value_len);
7224 }
7225 break;
7226 }
7227 next_param = cur_param;
7228 }
7229 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7230#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7231 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7232 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7233#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7234}
7235
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7236/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7237 * 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]7238 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7239 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7240 * 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]7241 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7242 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7243 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7244 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7245int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7246{
7247 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7248 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7249 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7250 const char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7251
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7252 if (!uri_auth)
7253 return 0;
7254
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7255 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]7256 return 0;
7257
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7258 memset(&si->applet.ctx.stats, 0, sizeof(si->applet.ctx.stats));
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7259 si->applet.ctx.stats.st_code = STAT_STATUS_INIT;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7260
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7261 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7262 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7263 return 0;
7264
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7265 h = uri;
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]7266 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7267 return 0;
7268
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7269 h += uri_auth->uri_len;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7270 while (h <= uri + msg->sl.rq.u_l - 3) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7271 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7272 si->applet.ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7273 break;
7274 }
7275 h++;
7276 }
7277
7278 if (uri_auth->refresh) {
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7279 h = uri + uri_auth->uri_len;
7280 while (h <= uri + msg->sl.rq.u_l - 10) {
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7281 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7282 si->applet.ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]7283 break;
7284 }
7285 h++;
7286 }
7287 }
7288
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7289 h = uri + uri_auth->uri_len;
7290 while (h <= uri + msg->sl.rq.u_l - 4) {
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7291 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7292 si->applet.ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]7293 break;
7294 }
7295 h++;
7296 }
7297
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7298 h = uri + uri_auth->uri_len;
7299 while (h <= uri + msg->sl.rq.u_l - 8) {
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7300 if (memcmp(h, ";st=", 4) == 0) {
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7301 int i;
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7302 h += 4;
Cyril Bonté20a804a2012-05-10 19:42:52 +0200[diff] [blame]7303 si->applet.ctx.stats.st_code = STAT_STATUS_UNKN;
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]7304 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
7305 if (strncmp(stat_status_codes[i], h, 4) == 0) {
7306 si->applet.ctx.stats.st_code = i;
7307 break;
7308 }
7309 }
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7310 break;
7311 }
7312 h++;
7313 }
7314
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7315 si->applet.ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]7316
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7317 return 1;
7318}
7319
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7320/*
7321 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7322 * By default it tries to report the error position as msg->err_pos. However if
7323 * this one is not set, it will then report msg->next, which is the last known
7324 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7325 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7326 */
7327void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7328 struct http_msg *msg,
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7329 int state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7330{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7331 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7332 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7333
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7334 es->len = MIN(chn->buf->i, sizeof(es->buf));
7335 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7336 len1 = MIN(len1, es->len);
7337 len2 = es->len - len1; /* remaining data if buffer wraps */
7338
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7339 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7340 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7341 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7342
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7343 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7344 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7345 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7346 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7347
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7348 es->when = date; // user-visible date
7349 es->sid = s->uniq_id;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7350 es->srv = target_srv(&s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7351 es->oe = other_end;
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]7352 es->src = s->req->prod->conn.addr.from;
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7353 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7354 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7355 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7356 es->s_flags = s->flags;
7357 es->t_flags = s->txn.flags;
7358 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7359 es->b_out = chn->buf->o;
7360 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7361 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7362 es->m_clen = msg->chunk_len;
7363 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7364}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7365
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7366/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7367 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7368 * performed over the whole headers. Otherwise it must contain a valid header
7369 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7370 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7371 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7372 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
7373 * -1.
7374 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7375 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7376unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7377 struct hdr_idx *idx, int occ,
7378 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7379{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7380 struct hdr_ctx local_ctx;
7381 char *ptr_hist[MAX_HDR_HISTORY];
7382 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7383 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7384 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7385
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7386 if (!ctx) {
7387 local_ctx.idx = 0;
7388 ctx = &local_ctx;
7389 }
7390
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7391 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7392 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7393 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7394 occ--;
7395 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7396 *vptr = ctx->line + ctx->val;
7397 *vlen = ctx->vlen;
7398 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7399 }
7400 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7401 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7402 }
7403
7404 /* negative occurrence, we scan all the list then walk back */
7405 if (-occ > MAX_HDR_HISTORY)
7406 return 0;
7407
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7408 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7409 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7410 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7411 len_hist[hist_ptr] = ctx->vlen;
7412 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7413 hist_ptr = 0;
7414 found++;
7415 }
7416 if (-occ > found)
7417 return 0;
7418 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
7419 * find occurrence -occ, so we have to check [hist_ptr+occ].
7420 */
7421 hist_ptr += occ;
7422 if (hist_ptr >= MAX_HDR_HISTORY)
7423 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7424 *vptr = ptr_hist[hist_ptr];
7425 *vlen = len_hist[hist_ptr];
7426 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7427}
7428
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]7429/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7430 * Print a debug line with a header. Always stop at the first CR or LF char,
7431 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
7432 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7433 */
7434void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
7435{
7436 int len, max;
7437 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreaufb7508a2012-05-21 16:47:54 +0200[diff] [blame]7438 dir, (unsigned short)si_fd(t->req->prod), (unsigned short)si_fd(t->req->cons));
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7439
7440 for (max = 0; start + max < end; max++)
7441 if (start[max] == '\r' || start[max] == '\n')
7442 break;
7443
7444 UBOUND(max, trashlen - len - 3);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7445 len += strlcpy2(trash + len, start, max + 1);
7446 trash[len++] = '\n';
Willy Tarreau21337822012-04-29 14:11:38 +0200[diff] [blame]7447 if (write(1, trash, len) < 0) /* shut gcc warning */;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7448}
7449
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7450/*
7451 * Initialize a new HTTP transaction for session <s>. It is assumed that all
7452 * the required fields are properly allocated and that we only need to (re)init
7453 * them. This should be used before processing any new request.
7454 */
7455void http_init_txn(struct session *s)
7456{
7457 struct http_txn *txn = &s->txn;
7458 struct proxy *fe = s->fe;
7459
7460 txn->flags = 0;
7461 txn->status = -1;
7462
William Lallemand5f232402012-04-05 18:02:55 +0200[diff] [blame]7463 global.req_count++;
7464
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7465 txn->cookie_first_date = 0;
7466 txn->cookie_last_date = 0;
7467
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7468 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7469 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7470 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7471 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7472 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7473 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]7474 txn->req.chunk_len = 0LL;
7475 txn->req.body_len = 0LL;
7476 txn->rsp.chunk_len = 0LL;
7477 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7478 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
7479 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]7480 txn->req.chn = s->req;
7481 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7482
7483 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7484
7485 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
7486 if (fe->options2 & PR_O2_REQBUG_OK)
7487 txn->req.err_pos = -1; /* let buggy requests pass */
7488
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7489 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7490 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
7491
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7492 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7493 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
7494
7495 if (txn->hdr_idx.v)
7496 hdr_idx_init(&txn->hdr_idx);
7497}
7498
7499/* to be used at the end of a transaction */
7500void http_end_txn(struct session *s)
7501{
7502 struct http_txn *txn = &s->txn;
7503
7504 /* these ones will have been dynamically allocated */
7505 pool_free2(pool2_requri, txn->uri);
7506 pool_free2(pool2_capture, txn->cli_cookie);
7507 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7508 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7509 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7510
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]7511 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7512 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7513 txn->uri = NULL;
7514 txn->srv_cookie = NULL;
7515 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7516
7517 if (txn->req.cap) {
7518 struct cap_hdr *h;
7519 for (h = s->fe->req_cap; h; h = h->next)
7520 pool_free2(h->pool, txn->req.cap[h->index]);
7521 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
7522 }
7523
7524 if (txn->rsp.cap) {
7525 struct cap_hdr *h;
7526 for (h = s->fe->rsp_cap; h; h = h->next)
7527 pool_free2(h->pool, txn->rsp.cap[h->index]);
7528 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
7529 }
7530
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7531}
7532
7533/* to be used at the end of a transaction to prepare a new one */
7534void http_reset_txn(struct session *s)
7535{
7536 http_end_txn(s);
7537 http_init_txn(s);
7538
7539 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7540 s->logs.logwait = s->fe->to_log;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]7541 session_del_srv_conn(s);
Willy Tarreau9e000c62011-03-10 14:03:36 +0100[diff] [blame]7542 clear_target(&s->target);
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]7543 /* re-init store persistence */
7544 s->store_count = 0;
7545
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7546 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7547
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7548 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7549
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7550 /* We must trim any excess data from the response buffer, because we
7551 * may have blocked an invalid response from a server that we don't
7552 * want to accidentely forward once we disable the analysers, nor do
7553 * we want those data to come along with next response. A typical
7554 * example of such data would be from a buggy server responding to
7555 * a HEAD with some data, or sending more than the advertised
7556 * content-length.
7557 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7558 if (unlikely(s->rep->buf->i))
7559 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]7560
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7561 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7562 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7563
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]7564 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7565 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7566
7567 s->req->rex = TICK_ETERNITY;
7568 s->req->wex = TICK_ETERNITY;
7569 s->req->analyse_exp = TICK_ETERNITY;
7570 s->rep->rex = TICK_ETERNITY;
7571 s->rep->wex = TICK_ETERNITY;
7572 s->rep->analyse_exp = TICK_ETERNITY;
7573}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7574
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7575void free_http_req_rules(struct list *r) {
7576 struct http_req_rule *tr, *pr;
7577
7578 list_for_each_entry_safe(pr, tr, r, list) {
7579 LIST_DEL(&pr->list);
7580 if (pr->action == HTTP_REQ_ACT_HTTP_AUTH)
7581 free(pr->http_auth.realm);
7582
7583 free(pr);
7584 }
7585}
7586
7587struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
7588{
7589 struct http_req_rule *rule;
7590 int cur_arg;
7591
7592 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
7593 if (!rule) {
7594 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
7595 return NULL;
7596 }
7597
7598 if (!*args[0]) {
7599 goto req_error_parsing;
7600 } else if (!strcmp(args[0], "allow")) {
7601 rule->action = HTTP_REQ_ACT_ALLOW;
7602 cur_arg = 1;
7603 } else if (!strcmp(args[0], "deny")) {
7604 rule->action = HTTP_REQ_ACT_DENY;
7605 cur_arg = 1;
7606 } else if (!strcmp(args[0], "auth")) {
7607 rule->action = HTTP_REQ_ACT_HTTP_AUTH;
7608 cur_arg = 1;
7609
7610 while(*args[cur_arg]) {
7611 if (!strcmp(args[cur_arg], "realm")) {
7612 rule->http_auth.realm = strdup(args[cur_arg + 1]);
7613 cur_arg+=2;
7614 continue;
7615 } else
7616 break;
7617 }
7618 } else {
7619req_error_parsing:
7620 Alert("parsing [%s:%d]: %s '%s', expects 'allow', 'deny', 'auth'.\n",
7621 file, linenum, *args[1]?"unknown parameter":"missing keyword in", args[*args[1]?1:0]);
7622 return NULL;
7623 }
7624
7625 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
7626 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7627 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7628
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]7629 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
7630 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
7631 file, linenum, args[0], errmsg);
7632 free(errmsg);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]7633 return NULL;
7634 }
7635 rule->cond = cond;
7636 }
7637 else if (*args[cur_arg]) {
7638 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
7639 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
7640 file, linenum, args[0], args[cur_arg]);
7641 return NULL;
7642 }
7643
7644 return rule;
7645}
7646
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7647/************************************************************************/
7648/* The code below is dedicated to ACL parsing and matching */
7649/************************************************************************/
7650
7651
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7652/* This function ensures that the prerequisites for an L7 fetch are ready,
7653 * which means that a request or response is ready. If some data is missing,
7654 * 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]7655 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
7656 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7657 *
7658 * The function returns :
7659 * 0 if some data is missing or if the requested data cannot be fetched
7660 * -1 if it is certain that we'll never have any HTTP message there
7661 * 1 if an HTTP message is ready
7662 */
7663static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7664acl_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7665 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7666{
7667 struct http_txn *txn = l7;
7668 struct http_msg *msg = &txn->req;
7669
7670 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
7671 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
7672 */
7673
7674 if (unlikely(!s || !txn))
7675 return 0;
7676
7677 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7678 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7679
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7680 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7681 if (unlikely(!s->req))
7682 return 0;
7683
7684 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]7685 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7686 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7687 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7688 return -1;
7689 }
7690
7691 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7692 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7693 http_msg_analyzer(msg, &txn->hdr_idx);
7694
7695 /* Still no valid request ? */
7696 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]7697 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7698 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7699 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7700 return -1;
7701 }
7702 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7703 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7704 return 0;
7705 }
7706
7707 /* OK we just got a valid HTTP request. We have some minor
7708 * preparation to perform so that further checks can rely
7709 * on HTTP tests.
7710 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7711 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7712 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
7713 s->flags |= SN_REDIRECTABLE;
7714
7715 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn)) {
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]7716 smp->data.uint = 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7717 return -1;
7718 }
7719 }
7720
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7721 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7722 return 0; /* data might have moved and indexes changed */
7723
7724 /* otherwise everything's ready for the request */
7725 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7726 else {
7727 /* Check for a dependency on a response */
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]7728 if (txn->rsp.msg_state < HTTP_MSG_BODY)
7729 return 0;
7730 }
7731
7732 /* everything's OK */
7733 return 1;
7734}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7735
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7736#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7737 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]7738
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7739#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7740 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]7741
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7742
7743/* 1. Check on METHOD
7744 * We use the pre-parsed method if it is known, and store its number as an
7745 * integer. If it is unknown, we use the pointer and the length.
7746 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7747static 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]7748{
7749 int len, meth;
7750
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7751 len = strlen(*text);
7752 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7753
7754 pattern->val.i = meth;
7755 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7756 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7757 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]7758 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7759 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7760 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7761 pattern->len = len;
7762 }
7763 return 1;
7764}
7765
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7766/* This function fetches the method of current HTTP request and stores
7767 * it in the global pattern struct as a chunk. There are two possibilities :
7768 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
7769 * in <len> and <ptr> is NULL ;
7770 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
7771 * <len> to its length.
7772 * This is intended to be used with acl_match_meth() only.
7773 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7774static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7775acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7776 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7777{
7778 int meth;
7779 struct http_txn *txn = l7;
7780
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7781 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7782
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7783 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7784 smp->type = SMP_T_UINT;
7785 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7786 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7787 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
7788 /* ensure the indexes are not affected */
7789 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7790 smp->type = SMP_T_CSTR;
7791 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7792 smp->data.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7793 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]7794 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7795 return 1;
7796}
7797
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7798/* See above how the method is stored in the global pattern */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7799static int acl_match_meth(struct sample *smp, struct acl_pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7800{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]7801 int icase;
7802
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7803
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7804 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7805 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7806 if (smp->data.uint == pattern->val.i)
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7807 return ACL_PAT_PASS;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]7808 return ACL_PAT_FAIL;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7809 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7810
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]7811 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
7812 if (pattern->val.i != HTTP_METH_OTHER)
7813 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7814
7815 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7816 if (pattern->len != smp->data.str.len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]7817 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]7818
7819 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7820 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
7821 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]7822 return ACL_PAT_FAIL;
7823 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7824}
7825
7826/* 2. Check on Request/Status Version
7827 * We simply compare strings here.
7828 */
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7829static 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]7830{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7831 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7832 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]7833 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7834 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]7835 }
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]7836 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7837 return 1;
7838}
7839
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7840static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7841acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7842 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7843{
7844 struct http_txn *txn = l7;
7845 char *ptr;
7846 int len;
7847
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7848 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7849
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7850 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7851 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7852
7853 while ((len-- > 0) && (*ptr++ != '/'));
7854 if (len <= 0)
7855 return 0;
7856
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7857 smp->type = SMP_T_CSTR;
7858 smp->data.str.str = ptr;
7859 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7860
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]7861 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7862 return 1;
7863}
7864
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7865static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7866acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7867 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7868{
7869 struct http_txn *txn = l7;
7870 char *ptr;
7871 int len;
7872
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7873 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7874
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7875 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7876 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7877
7878 while ((len-- > 0) && (*ptr++ != '/'));
7879 if (len <= 0)
7880 return 0;
7881
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7882 smp->type = SMP_T_CSTR;
7883 smp->data.str.str = ptr;
7884 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7885
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]7886 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7887 return 1;
7888}
7889
7890/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7891static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7892acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7893 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7894{
7895 struct http_txn *txn = l7;
7896 char *ptr;
7897 int len;
7898
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7899 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7900
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7901 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7902 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7903
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7904 smp->type = SMP_T_UINT;
7905 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7906 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7907 return 1;
7908}
7909
7910/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]7911static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]7912smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7913 const struct arg *args, struct sample *smp)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7914{
7915 struct http_txn *txn = l7;
7916
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7917 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7918
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7919 smp->type = SMP_T_CSTR;
7920 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7921 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7922 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]7923 return 1;
7924}
7925
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7926static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]7927smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7928 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7929{
7930 struct http_txn *txn = l7;
7931
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7932 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7933
7934 /* Parse HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7935 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->req->cons->conn.addr.to);
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]7936 if (((struct sockaddr_in *)&l4->req->cons->conn.addr.to)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]7937 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]7938 smp->type = SMP_T_IPV4;
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]7939 smp->data.ipv4 = ((struct sockaddr_in *)&l4->req->cons->conn.addr.to)->sin_addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7940
7941 /*
7942 * If we are parsing url in frontend space, we prepare backend stage
7943 * to not parse again the same url ! optimization lazyness...
7944 */
7945 if (px->options & PR_O_HTTP_PROXY)
7946 l4->flags |= SN_ADDR_SET;
7947
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7948 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7949 return 1;
7950}
7951
7952static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]7953smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7954 const struct arg *args, struct sample *smp)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7955{
7956 struct http_txn *txn = l7;
7957
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]7958 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7959
7960 /* Same optimization as url_ip */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7961 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]7962 smp->type = SMP_T_UINT;
Willy Tarreau986a9d22012-08-30 21:11:38 +0200[diff] [blame]7963 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]7964
7965 if (px->options & PR_O_HTTP_PROXY)
7966 l4->flags |= SN_ADDR_SET;
7967
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]7968 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]7969 return 1;
7970}
7971
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7972/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
7973 * Accepts an optional argument of type string containing the header field name,
7974 * and an optional argument of type signed or unsigned integer to request an
7975 * explicit occurrence of the header. Note that in the event of a missing name,
7976 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]7977 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7978static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7979smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]7980 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]7981{
7982 struct http_txn *txn = l7;
7983 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]7984 struct hdr_ctx *ctx = (struct hdr_ctx *)smp->ctx.a;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7985 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]7986 int occ = 0;
7987 const char *name_str = NULL;
7988 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]7989
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7990 if (args) {
7991 if (args[0].type != ARGT_STR)
7992 return 0;
7993 name_str = args[0].data.str.str;
7994 name_len = args[0].data.str.len;
7995
7996 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
7997 occ = args[1].data.uint;
7998 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]7999
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8000 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8001
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8002 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8003 /* search for header from the beginning */
8004 ctx->idx = 0;
8005
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8006 if (!occ && !(opt & SMP_OPT_ITERATE))
8007 /* no explicit occurrence and single fetch => last header by default */
8008 occ = -1;
8009
8010 if (!occ)
8011 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8012 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]8013
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8014 smp->type = SMP_T_CSTR;
8015 smp->flags |= SMP_F_VOL_HDR;
8016 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]8017 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8018
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8019 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8020 return 0;
8021}
8022
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8023/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8024 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8025 */
8026static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8027smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8028 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8029{
8030 struct http_txn *txn = l7;
8031 struct hdr_idx *idx = &txn->hdr_idx;
8032 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8033 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]8034 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8035
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8036 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8037 return 0;
8038
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8039 CHECK_HTTP_MESSAGE_FIRST();
8040
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8041 ctx.idx = 0;
8042 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8043 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]8044 cnt++;
8045
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8046 smp->type = SMP_T_UINT;
8047 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8048 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8049 return 1;
8050}
8051
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8052/* Fetch an HTTP header's integer value. The integer value is returned. It
8053 * takes a mandatory argument of type string and an optional one of type int
8054 * to designate a specific occurrence. It returns an unsigned integer, which
8055 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8056 */
8057static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8058smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8059 const struct arg *args, struct sample *smp)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8060{
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8061 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8062
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8063 if (ret > 0) {
8064 smp->type = SMP_T_UINT;
8065 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8066 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8067
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8068 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8069}
8070
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8071/* Fetch an HTTP header's integer value. The integer value is returned. It
8072 * takes a mandatory argument of type string and an optional one of type int
8073 * to designate a specific occurrence. It returns an IPv4 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8074 */
8075static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8076smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8077 const struct arg *args, struct sample *smp)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8078{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8079 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8080
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8081 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp)) > 0) {
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8082 smp->type = SMP_T_IPV4;
8083 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4))
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8084 break;
8085 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8086 if (!(smp->flags & SMP_F_NOT_LAST))
8087 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8088 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]8089 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]8090}
8091
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8092/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
8093 * the first '/' after the possible hostname, and ends before the possible '?'.
8094 */
8095static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8096smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8097 const struct arg *args, struct sample *smp)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8098{
8099 struct http_txn *txn = l7;
8100 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]8101
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8102 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8103
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8104 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]8105 ptr = http_get_path(txn);
8106 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8107 return 0;
8108
8109 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8110 smp->type = SMP_T_CSTR;
8111 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8112
8113 while (ptr < end && *ptr != '?')
8114 ptr++;
8115
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8116 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8117 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]8118 return 1;
8119}
8120
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8121/* This produces a concatenation of the first occurrence of the Host header
8122 * followed by the path component if it begins with a slash ('/'). This means
8123 * that '*' will not be added, resulting in exactly the first Host entry.
8124 * If no Host header is found, then the path is returned as-is. The returned
8125 * value is stored in the trash so it does not need to be marked constant.
8126 */
8127static int
8128smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8129 const struct arg *args, struct sample *smp)
8130{
8131 struct http_txn *txn = l7;
8132 char *ptr, *end, *beg;
8133 struct hdr_ctx ctx;
8134
8135 CHECK_HTTP_MESSAGE_FIRST();
8136
8137 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8138 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]8139 !ctx.vlen)
8140 return smp_fetch_path(px, l4, l7, opt, args, smp);
8141
8142 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
8143 memcpy(trash, ctx.line + ctx.val, ctx.vlen);
8144 smp->type = SMP_T_STR;
8145 smp->data.str.str = trash;
8146 smp->data.str.len = ctx.vlen;
8147
8148 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8149 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]8150 beg = http_get_path(txn);
8151 if (!beg)
8152 beg = end;
8153
8154 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
8155
8156 if (beg < ptr && *beg == '/') {
8157 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
8158 smp->data.str.len += ptr - beg;
8159 }
8160
8161 smp->flags = SMP_F_VOL_1ST;
8162 return 1;
8163}
8164
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8165static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8166acl_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8167 const struct arg *args, struct sample *smp)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8168{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8169 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8170 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8171 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8172
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8173 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8174
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8175 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8176 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]8177 return 1;
8178}
8179
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8180/* return a valid test if the current request is the first one on the connection */
8181static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8182acl_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]8183 const struct arg *args, struct sample *smp)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8184{
8185 if (!s)
8186 return 0;
8187
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8188 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]8189 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]8190 return 1;
8191}
8192
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8193/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8194static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8195acl_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8196 const struct arg *args, struct sample *smp)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8197{
8198
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8199 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8200 return 0;
8201
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8202 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8203
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8204 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8205 return 0;
8206
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8207 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8208 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]8209 return 1;
8210}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8211
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]8212/* Accepts exactly 1 argument of type userlist */
8213static int
8214acl_fetch_http_auth_grp(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8215 const struct arg *args, struct sample *smp)
8216{
8217
8218 if (!args || args->type != ARGT_USR)
8219 return 0;
8220
8221 CHECK_HTTP_MESSAGE_FIRST();
8222
8223 if (!get_http_auth(l4))
8224 return 0;
8225
8226 /* acl_match_auth() will need several information at once */
8227 smp->ctx.a[0] = args->data.usr; /* user list */
8228 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
8229 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
8230
8231 /* if the user does not belong to the userlist or has a wrong password,
8232 * report that it unconditionally does not match. Otherwise we return
8233 * a non-zero integer which will be ignored anyway since all the params
8234 * that acl_match_auth() will use are in test->ctx.a[0,1,2].
8235 */
8236 smp->type = SMP_T_BOOL;
8237 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
8238 if (smp->data.uint)
8239 smp->type = SMP_T_UINT;
8240
8241 return 1;
8242}
8243
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8244/* Try to find the next occurrence of a cookie name in a cookie header value.
8245 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
8246 * the cookie value is returned into *value and *value_l, and the function
8247 * returns a pointer to the next pointer to search from if the value was found.
8248 * Otherwise if the cookie was not found, NULL is returned and neither value
8249 * nor value_l are touched. The input <hdr> string should first point to the
8250 * header's value, and the <hdr_end> pointer must point to the first character
8251 * not part of the value. <list> must be non-zero if value may represent a list
8252 * of values (cookie headers). This makes it faster to abort parsing when no
8253 * list is expected.
8254 */
8255static char *
8256extract_cookie_value(char *hdr, const char *hdr_end,
8257 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]8258 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8259{
8260 char *equal, *att_end, *att_beg, *val_beg, *val_end;
8261 char *next;
8262
8263 /* we search at least a cookie name followed by an equal, and more
8264 * generally something like this :
8265 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
8266 */
8267 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
8268 /* Iterate through all cookies on this line */
8269
8270 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8271 att_beg++;
8272
8273 /* find att_end : this is the first character after the last non
8274 * space before the equal. It may be equal to hdr_end.
8275 */
8276 equal = att_end = att_beg;
8277
8278 while (equal < hdr_end) {
8279 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
8280 break;
8281 if (http_is_spht[(unsigned char)*equal++])
8282 continue;
8283 att_end = equal;
8284 }
8285
8286 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8287 * is between <att_beg> and <equal>, both may be identical.
8288 */
8289
8290 /* look for end of cookie if there is an equal sign */
8291 if (equal < hdr_end && *equal == '=') {
8292 /* look for the beginning of the value */
8293 val_beg = equal + 1;
8294 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8295 val_beg++;
8296
8297 /* find the end of the value, respecting quotes */
8298 next = find_cookie_value_end(val_beg, hdr_end);
8299
8300 /* make val_end point to the first white space or delimitor after the value */
8301 val_end = next;
8302 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8303 val_end--;
8304 } else {
8305 val_beg = val_end = next = equal;
8306 }
8307
8308 /* We have nothing to do with attributes beginning with '$'. However,
8309 * they will automatically be removed if a header before them is removed,
8310 * since they're supposed to be linked together.
8311 */
8312 if (*att_beg == '$')
8313 continue;
8314
8315 /* Ignore cookies with no equal sign */
8316 if (equal == next)
8317 continue;
8318
8319 /* Now we have the cookie name between att_beg and att_end, and
8320 * its value between val_beg and val_end.
8321 */
8322
8323 if (att_end - att_beg == cookie_name_l &&
8324 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
8325 /* let's return this value and indicate where to go on from */
8326 *value = val_beg;
8327 *value_l = val_end - val_beg;
8328 return next + 1;
8329 }
8330
8331 /* Set-Cookie headers only have the name in the first attr=value part */
8332 if (!list)
8333 break;
8334 }
8335
8336 return NULL;
8337}
8338
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8339/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8340 * smp->ctx.a[0] for the in-header position, smp->ctx.a[1] for the
8341 * 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]8342 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8343 * 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]8344 * Accepts exactly 1 argument of type string. If the input options indicate
8345 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8346 */
8347static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8348smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8349 const struct arg *args, struct sample *smp)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8350{
8351 struct http_txn *txn = l7;
8352 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8353 struct hdr_ctx *ctx = (struct hdr_ctx *)&smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8354 const struct http_msg *msg;
8355 const char *hdr_name;
8356 int hdr_name_len;
8357 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8358 int occ = 0;
8359 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8360
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8361 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8362 return 0;
8363
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8364 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8365
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8366 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8367 msg = &txn->req;
8368 hdr_name = "Cookie";
8369 hdr_name_len = 6;
8370 } else {
8371 msg = &txn->rsp;
8372 hdr_name = "Set-Cookie";
8373 hdr_name_len = 10;
8374 }
8375
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8376 if (!occ && !(opt & SMP_OPT_ITERATE))
8377 /* no explicit occurrence and single fetch => last cookie by default */
8378 occ = -1;
8379
8380 /* OK so basically here, either we want only one value and it's the
8381 * last one, or we want to iterate over all of them and we fetch the
8382 * next one.
8383 */
8384
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8385 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8386 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8387 /* search for the header from the beginning, we must first initialize
8388 * the search parameters.
8389 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8390 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8391 ctx->idx = 0;
8392 }
8393
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8394 smp->flags |= SMP_F_VOL_HDR;
8395
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8396 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8397 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
8398 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8399 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
8400 goto out;
8401
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8402 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8403 continue;
8404
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8405 smp->ctx.a[0] = ctx->line + ctx->val;
8406 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8407 }
8408
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8409 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8410 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]8411 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8412 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8413 &smp->data.str.str,
8414 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8415 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8416 found = 1;
8417 if (occ >= 0) {
8418 /* one value was returned into smp->data.str.{str,len} */
8419 smp->flags |= SMP_F_NOT_LAST;
8420 return 1;
8421 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8422 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8423 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8424 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8425 /* all cookie headers and values were scanned. If we're looking for the
8426 * last occurrence, we may return it now.
8427 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8428 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8429 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]8430 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8431}
8432
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8433/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8434 * 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]8435 * multiple cookies may be parsed on the same line.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8436 * Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8437 */
8438static int
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8439acl_fetch_cookie_cnt(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 Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8441{
8442 struct http_txn *txn = l7;
8443 struct hdr_idx *idx = &txn->hdr_idx;
8444 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8445 const struct http_msg *msg;
8446 const char *hdr_name;
8447 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8448 int cnt;
8449 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8450 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8451
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8452 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]8453 return 0;
8454
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8455 CHECK_HTTP_MESSAGE_FIRST();
8456
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8457 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]8458 msg = &txn->req;
8459 hdr_name = "Cookie";
8460 hdr_name_len = 6;
8461 } else {
8462 msg = &txn->rsp;
8463 hdr_name = "Set-Cookie";
8464 hdr_name_len = 10;
8465 }
8466
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8467 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]8468 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8469 ctx.idx = 0;
8470 cnt = 0;
8471
8472 while (1) {
8473 /* Note: val_beg == NULL every time we need to fetch a new header */
8474 if (!val_beg) {
8475 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
8476 break;
8477
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8478 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8479 continue;
8480
8481 val_beg = ctx.line + ctx.val;
8482 val_end = val_beg + ctx.vlen;
8483 }
8484
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8485 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8486 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8487 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8488 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8489 &smp->data.str.str,
8490 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8491 cnt++;
8492 }
8493 }
8494
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8495 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8496 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]8497 return 1;
8498}
8499
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8500/* Fetch an cookie's integer value. The integer value is returned. It
8501 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
8502 */
8503static int
8504smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8505 const struct arg *args, struct sample *smp)
8506{
8507 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp);
8508
8509 if (ret > 0) {
8510 smp->type = SMP_T_UINT;
8511 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8512 }
8513
8514 return ret;
8515}
8516
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8517/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8518/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8519/************************************************************************/
8520
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8521/*
8522 * Given a path string and its length, find the position of beginning of the
8523 * query string. Returns NULL if no query string is found in the path.
8524 *
8525 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
8526 *
8527 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
8528 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8529static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8530{
8531 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]8532
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8533 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8534 return p ? p + 1 : NULL;
8535}
8536
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8537static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8538{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8539 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8540}
8541
8542/*
8543 * Given a url parameter, find the starting position of the first occurence,
8544 * or NULL if the parameter is not found.
8545 *
8546 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
8547 * the function will return query_string+8.
8548 */
8549static char*
8550find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8551 char* url_param_name, size_t url_param_name_l,
8552 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8553{
8554 char *pos, *last;
8555
8556 pos = query_string;
8557 last = query_string + query_string_l - url_param_name_l - 1;
8558
8559 while (pos <= last) {
8560 if (pos[url_param_name_l] == '=') {
8561 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
8562 return pos;
8563 pos += url_param_name_l + 1;
8564 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8565 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8566 pos++;
8567 pos++;
8568 }
8569 return NULL;
8570}
8571
8572/*
8573 * Given a url parameter name, returns its value and size into *value and
8574 * *value_l respectively, and returns non-zero. If the parameter is not found,
8575 * zero is returned and value/value_l are not touched.
8576 */
8577static int
8578find_url_param_value(char* path, size_t path_l,
8579 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8580 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8581{
8582 char *query_string, *qs_end;
8583 char *arg_start;
8584 char *value_start, *value_end;
8585
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8586 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8587 if (!query_string)
8588 return 0;
8589
8590 qs_end = path + path_l;
8591 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8592 url_param_name, url_param_name_l,
8593 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8594 if (!arg_start)
8595 return 0;
8596
8597 value_start = arg_start + url_param_name_l + 1;
8598 value_end = value_start;
8599
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8600 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8601 value_end++;
8602
8603 *value = value_start;
8604 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]8605 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8606}
8607
8608static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8609smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8610 const struct arg *args, struct sample *smp)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8611{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8612 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8613 struct http_txn *txn = l7;
8614 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8615
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8616 if (!args || args[0].type != ARGT_STR ||
8617 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8618 return 0;
8619
8620 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8621
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]8622 if (args[1].type)
8623 delim = *args[1].data.str.str;
8624
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8625 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]8626 args->data.str.str, args->data.str.len,
8627 &smp->data.str.str, &smp->data.str.len,
8628 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8629 return 0;
8630
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]8631 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8632 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]8633 return 1;
8634}
8635
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]8636/* Return the signed integer value for the specified url parameter (see url_param
8637 * above).
8638 */
8639static int
8640smp_fetch_url_param_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
8641 const struct arg *args, struct sample *smp)
8642{
8643 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp);
8644
8645 if (ret > 0) {
8646 smp->type = SMP_T_UINT;
8647 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
8648 }
8649
8650 return ret;
8651}
8652
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8653/* This function is used to validate the arguments passed to any "hdr" fetch
8654 * keyword. These keywords support an optional positive or negative occurrence
8655 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
8656 * is assumed that the types are already the correct ones. Returns 0 on error,
8657 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
8658 * error message in case of error, that the caller is responsible for freeing.
8659 * The initial location must either be freeable or NULL.
8660 */
8661static int val_hdr(struct arg *arg, char **err_msg)
8662{
8663 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8664 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8665 return 0;
8666 }
8667 return 1;
8668}
8669
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8670/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]8671/* All supported ACL keywords must be declared here. */
8672/************************************************************************/
8673
8674/* Note: must not be declared <const> as its list will be overwritten.
8675 * Please take care of keeping this list alphabetically sorted.
8676 */
8677static struct acl_kw_list acl_kws = {{ },{
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]8678 { "base", acl_parse_str, smp_fetch_base, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8679 { "base_beg", acl_parse_str, smp_fetch_base, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8680 { "base_dir", acl_parse_str, smp_fetch_base, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8681 { "base_dom", acl_parse_str, smp_fetch_base, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8682 { "base_end", acl_parse_str, smp_fetch_base, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8683 { "base_len", acl_parse_int, smp_fetch_base, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8684 { "base_reg", acl_parse_reg, smp_fetch_base, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8685 { "base_sub", acl_parse_str, smp_fetch_base, acl_match_sub, ACL_USE_L7REQ_VOLATILE, 0 },
8686
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8687 { "cook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
8688 { "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]8689 { "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]8690 { "cook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8691 { "cook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8692 { "cook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8693 { "cook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8694 { "cook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8695 { "cook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8696 { "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]8697
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8698 { "hdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
8699 { "hdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8700 { "hdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7REQ_VOLATILE, ARG1(0,STR) },
8701 { "hdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8702 { "hdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8703 { "hdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8704 { "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 },
8705 { "hdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8706 { "hdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8707 { "hdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8708 { "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]8709
8710 { "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]8711 { "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]8712 { "http_first_req", acl_parse_nothing, acl_fetch_http_first_req, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
8713
8714 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT, 0 },
8715
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8716 { "path", acl_parse_str, smp_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8717 { "path_beg", acl_parse_str, smp_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8718 { "path_dir", acl_parse_str, smp_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8719 { "path_dom", acl_parse_str, smp_fetch_path, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8720 { "path_end", acl_parse_str, smp_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8721 { "path_len", acl_parse_int, smp_fetch_path, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8722 { "path_reg", acl_parse_reg, smp_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8723 { "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]8724
8725 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT, 0 },
8726 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8727 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, 0 },
8728
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]8729 { "scook", acl_parse_str, smp_fetch_cookie, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG1(0,STR) },
8730 { "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]8731 { "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]8732 { "scook_dir", acl_parse_str, smp_fetch_cookie, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8733 { "scook_dom", acl_parse_str, smp_fetch_cookie, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8734 { "scook_end", acl_parse_str, smp_fetch_cookie, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8735 { "scook_len", acl_parse_int, smp_fetch_cookie, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8736 { "scook_reg", acl_parse_reg, smp_fetch_cookie, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8737 { "scook_sub", acl_parse_str, smp_fetch_cookie, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8738 { "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]8739
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8740 { "shdr", acl_parse_str, smp_fetch_hdr, acl_match_str, ACL_USE_L7RTR_VOLATILE|ACL_MAY_LOOKUP, ARG2(0,STR,SINT), val_hdr },
8741 { "shdr_beg", acl_parse_str, smp_fetch_hdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8742 { "shdr_cnt", acl_parse_int, smp_fetch_hdr_cnt, acl_match_int, ACL_USE_L7RTR_VOLATILE, ARG1(0,STR) },
8743 { "shdr_dir", acl_parse_str, smp_fetch_hdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8744 { "shdr_dom", acl_parse_str, smp_fetch_hdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8745 { "shdr_end", acl_parse_str, smp_fetch_hdr, acl_match_end, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8746 { "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 },
8747 { "shdr_len", acl_parse_int, smp_fetch_hdr, acl_match_len, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8748 { "shdr_reg", acl_parse_reg, smp_fetch_hdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8749 { "shdr_sub", acl_parse_str, smp_fetch_hdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE, ARG2(0,STR,SINT), val_hdr },
8750 { "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]8751
8752 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT, 0 },
8753
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8754 { "url", acl_parse_str, smp_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8755 { "url_beg", acl_parse_str, smp_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE, 0 },
8756 { "url_dir", acl_parse_str, smp_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE, 0 },
8757 { "url_dom", acl_parse_str, smp_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE, 0 },
8758 { "url_end", acl_parse_str, smp_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE, 0 },
8759 { "url_ip", acl_parse_ip, smp_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, 0 },
8760 { "url_len", acl_parse_int, smp_fetch_url, acl_match_len, ACL_USE_L7REQ_VOLATILE, 0 },
8761 { "url_port", acl_parse_int, smp_fetch_url_port, acl_match_int, ACL_USE_L7REQ_VOLATILE, 0 },
8762 { "url_reg", acl_parse_reg, smp_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE, 0 },
8763 { "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]8764
8765 { "urlp", acl_parse_str, smp_fetch_url_param, acl_match_str, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
8766 { "urlp_beg", acl_parse_str, smp_fetch_url_param, acl_match_beg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8767 { "urlp_dir", acl_parse_str, smp_fetch_url_param, acl_match_dir, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8768 { "urlp_dom", acl_parse_str, smp_fetch_url_param, acl_match_dom, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8769 { "urlp_end", acl_parse_str, smp_fetch_url_param, acl_match_end, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8770 { "urlp_ip", acl_parse_ip, smp_fetch_url_param, acl_match_ip, ACL_USE_L7REQ_VOLATILE|ACL_MAY_LOOKUP, ARG1(1,STR) },
8771 { "urlp_len", acl_parse_int, smp_fetch_url_param, acl_match_len, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8772 { "urlp_reg", acl_parse_reg, smp_fetch_url_param, acl_match_reg, ACL_USE_L7REQ_VOLATILE, ARG1(1,STR) },
8773 { "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]8774 { "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]8775
8776 { NULL, NULL, NULL, NULL },
8777}};
8778
8779/************************************************************************/
8780/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8781/************************************************************************/
8782/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8783static struct sample_fetch_kw_list sample_fetch_keywords = {{ },{
Willy Tarreau1b6c00c2012-10-05 22:41:26 +0200[diff] [blame]8784 { "hdr", smp_fetch_hdr, ARG2(1,STR,SINT), val_hdr, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
8785 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
8786 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
8787 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
8788 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_CAP_L7|SMP_CAP_REQ },
8789 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_CAP_L7|SMP_CAP_REQ },
8790 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ },
8791 { "cookie", smp_fetch_cookie, ARG1(1,STR), NULL, SMP_T_CSTR, SMP_CAP_L7|SMP_CAP_REQ|SMP_CAP_RES },
8792 { "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]8793 { NULL, NULL, 0, 0, 0 },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]8794}};
8795
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8796
8797__attribute__((constructor))
8798static void __http_protocol_init(void)
8799{
8800 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]8801 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8802}
8803
8804
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8805/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8806 * Local variables:
8807 * c-indent-level: 8
8808 * c-basic-offset: 8
8809 * End:
8810 */