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git01.mediatek.com / haproxy / 5af24efee92713d89c7a8a7e47c864129514294f / . / src / proto_http.c
blob: 35aa82c8c1b52c16dd52095ebd6242c2e747f642 [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreau7c669d72008-06-20 15:04:11 +0200[diff] [blame]4 * Copyright 2000-2008 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 Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]26#include <common/appsession.h>
27#include <common/compat.h>
28#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]29#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]30#include <common/memory.h>
31#include <common/mini-clist.h>
32#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]33#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]34#include <common/time.h>
35#include <common/uri_auth.h>
36#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]37
38#include <types/capture.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]39#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]40
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]41#include <proto/acl.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]42#include <proto/backend.h>
43#include <proto/buffers.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]44#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]45#include <proto/fd.h>
46#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]47#include <proto/hdr_idx.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]48#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]49#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]50#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]51#include <proto/queue.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]52#include <proto/server.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]53#include <proto/session.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]54#include <proto/stream_interface.h>
Willy Tarreau2d212792008-08-27 21:41:35 +0200[diff] [blame]55#include <proto/stream_sock.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]56#include <proto/task.h>
57
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]58#ifdef CONFIG_HAP_TCPSPLICE
59#include <libtcpsplice.h>
60#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]61
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]62#define DEBUG_PARSE_NO_SPEEDUP
63#undef DEBUG_PARSE_NO_SPEEDUP
64
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]65/* This is used to perform a quick jump as an alternative to a break/continue
66 * instruction. The first argument is the label for normal operation, and the
67 * second one is the break/continue instruction in the no_speedup mode.
68 */
69
70#ifdef DEBUG_PARSE_NO_SPEEDUP
71#define QUICK_JUMP(x,y) y
72#else
73#define QUICK_JUMP(x,y) goto x
74#endif
75
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]76/* This is used by remote monitoring */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]77const char HTTP_200[] =
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]78 "HTTP/1.0 200 OK\r\n"
79 "Cache-Control: no-cache\r\n"
80 "Connection: close\r\n"
81 "Content-Type: text/html\r\n"
82 "\r\n"
83 "<html><body><h1>200 OK</h1>\nHAProxy: service ready.\n</body></html>\n";
84
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]85const struct chunk http_200_chunk = {
86 .str = (char *)&HTTP_200,
87 .len = sizeof(HTTP_200)-1
88};
89
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]90const char *HTTP_301 =
91 "HTTP/1.0 301 Moved Permantenly\r\n"
92 "Cache-Control: no-cache\r\n"
93 "Connection: close\r\n"
94 "Location: "; /* not terminated since it will be concatenated with the URL */
95
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]96const char *HTTP_302 =
97 "HTTP/1.0 302 Found\r\n"
98 "Cache-Control: no-cache\r\n"
99 "Connection: close\r\n"
100 "Location: "; /* not terminated since it will be concatenated with the URL */
101
102/* same as 302 except that the browser MUST retry with the GET method */
103const char *HTTP_303 =
104 "HTTP/1.0 303 See Other\r\n"
105 "Cache-Control: no-cache\r\n"
106 "Connection: close\r\n"
107 "Location: "; /* not terminated since it will be concatenated with the URL */
108
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]109/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
110const char *HTTP_401_fmt =
111 "HTTP/1.0 401 Unauthorized\r\n"
112 "Cache-Control: no-cache\r\n"
113 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]114 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]115 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
116 "\r\n"
117 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
118
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]119
120const int http_err_codes[HTTP_ERR_SIZE] = {
121 [HTTP_ERR_400] = 400,
122 [HTTP_ERR_403] = 403,
123 [HTTP_ERR_408] = 408,
124 [HTTP_ERR_500] = 500,
125 [HTTP_ERR_502] = 502,
126 [HTTP_ERR_503] = 503,
127 [HTTP_ERR_504] = 504,
128};
129
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]130static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]131 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]132 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]133 "Cache-Control: no-cache\r\n"
134 "Connection: close\r\n"
135 "Content-Type: text/html\r\n"
136 "\r\n"
137 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
138
139 [HTTP_ERR_403] =
140 "HTTP/1.0 403 Forbidden\r\n"
141 "Cache-Control: no-cache\r\n"
142 "Connection: close\r\n"
143 "Content-Type: text/html\r\n"
144 "\r\n"
145 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
146
147 [HTTP_ERR_408] =
148 "HTTP/1.0 408 Request Time-out\r\n"
149 "Cache-Control: no-cache\r\n"
150 "Connection: close\r\n"
151 "Content-Type: text/html\r\n"
152 "\r\n"
153 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
154
155 [HTTP_ERR_500] =
156 "HTTP/1.0 500 Server Error\r\n"
157 "Cache-Control: no-cache\r\n"
158 "Connection: close\r\n"
159 "Content-Type: text/html\r\n"
160 "\r\n"
161 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
162
163 [HTTP_ERR_502] =
164 "HTTP/1.0 502 Bad Gateway\r\n"
165 "Cache-Control: no-cache\r\n"
166 "Connection: close\r\n"
167 "Content-Type: text/html\r\n"
168 "\r\n"
169 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
170
171 [HTTP_ERR_503] =
172 "HTTP/1.0 503 Service Unavailable\r\n"
173 "Cache-Control: no-cache\r\n"
174 "Connection: close\r\n"
175 "Content-Type: text/html\r\n"
176 "\r\n"
177 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
178
179 [HTTP_ERR_504] =
180 "HTTP/1.0 504 Gateway Time-out\r\n"
181 "Cache-Control: no-cache\r\n"
182 "Connection: close\r\n"
183 "Content-Type: text/html\r\n"
184 "\r\n"
185 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
186
187};
188
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]189/* We must put the messages here since GCC cannot initialize consts depending
190 * on strlen().
191 */
192struct chunk http_err_chunks[HTTP_ERR_SIZE];
193
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]194#define FD_SETS_ARE_BITFIELDS
195#ifdef FD_SETS_ARE_BITFIELDS
196/*
197 * This map is used with all the FD_* macros to check whether a particular bit
198 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
199 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
200 * byte should be encoded. Be careful to always pass bytes from 0 to 255
201 * exclusively to the macros.
202 */
203fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
204fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
205
206#else
207#error "Check if your OS uses bitfields for fd_sets"
208#endif
209
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]210void init_proto_http()
211{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]212 int i;
213 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]214 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]215
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]216 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
217 if (!http_err_msgs[msg]) {
218 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
219 abort();
220 }
221
222 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
223 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
224 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]225
226 /* initialize the log header encoding map : '{|}"#' should be encoded with
227 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
228 * URL encoding only requires '"', '#' to be encoded as well as non-
229 * printable characters above.
230 */
231 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
232 memset(url_encode_map, 0, sizeof(url_encode_map));
233 for (i = 0; i < 32; i++) {
234 FD_SET(i, hdr_encode_map);
235 FD_SET(i, url_encode_map);
236 }
237 for (i = 127; i < 256; i++) {
238 FD_SET(i, hdr_encode_map);
239 FD_SET(i, url_encode_map);
240 }
241
242 tmp = "\"#{|}";
243 while (*tmp) {
244 FD_SET(*tmp, hdr_encode_map);
245 tmp++;
246 }
247
248 tmp = "\"#";
249 while (*tmp) {
250 FD_SET(*tmp, url_encode_map);
251 tmp++;
252 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]253
254 /* memory allocations */
255 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]256 pool2_capture = create_pool("capture", CAPTURE_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]257}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]258
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]259/*
260 * We have 26 list of methods (1 per first letter), each of which can have
261 * up to 3 entries (2 valid, 1 null).
262 */
263struct http_method_desc {
264 http_meth_t meth;
265 int len;
266 const char text[8];
267};
268
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]269const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]270 ['C' - 'A'] = {
271 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
272 },
273 ['D' - 'A'] = {
274 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
275 },
276 ['G' - 'A'] = {
277 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
278 },
279 ['H' - 'A'] = {
280 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
281 },
282 ['P' - 'A'] = {
283 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
284 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
285 },
286 ['T' - 'A'] = {
287 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
288 },
289 /* rest is empty like this :
290 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
291 */
292};
293
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]294/* 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]295 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]296 * RFC2616 for those chars.
297 */
298
299const char http_is_spht[256] = {
300 [' '] = 1, ['\t'] = 1,
301};
302
303const char http_is_crlf[256] = {
304 ['\r'] = 1, ['\n'] = 1,
305};
306
307const char http_is_lws[256] = {
308 [' '] = 1, ['\t'] = 1,
309 ['\r'] = 1, ['\n'] = 1,
310};
311
312const char http_is_sep[256] = {
313 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
314 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
315 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
316 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
317 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
318};
319
320const char http_is_ctl[256] = {
321 [0 ... 31] = 1,
322 [127] = 1,
323};
324
325/*
326 * A token is any ASCII char that is neither a separator nor a CTL char.
327 * Do not overwrite values in assignment since gcc-2.95 will not handle
328 * them correctly. Instead, define every non-CTL char's status.
329 */
330const char http_is_token[256] = {
331 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
332 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
333 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
334 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
335 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
336 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
337 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
338 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
339 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
340 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
341 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
342 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
343 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
344 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
345 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
346 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
347 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
348 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
349 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
350 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
351 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
352 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
353 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
354 ['|'] = 1, ['}'] = 0, ['~'] = 1,
355};
356
357
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]358/*
359 * An http ver_token is any ASCII which can be found in an HTTP version,
360 * which includes 'H', 'T', 'P', '/', '.' and any digit.
361 */
362const char http_is_ver_token[256] = {
363 ['.'] = 1, ['/'] = 1,
364 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
365 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
366 ['H'] = 1, ['P'] = 1, ['T'] = 1,
367};
368
369
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]370#ifdef DEBUG_FULL
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]371static char *cli_stnames[4] = { "DAT", "SHR", "SHW", "CLS" };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]372#endif
373
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]374/*
375 * Adds a header and its CRLF at the tail of buffer <b>, just before the last
376 * CRLF. Text length is measured first, so it cannot be NULL.
377 * The header is also automatically added to the index <hdr_idx>, and the end
378 * of headers is automatically adjusted. The number of bytes added is returned
379 * on success, otherwise <0 is returned indicating an error.
380 */
381int http_header_add_tail(struct buffer *b, struct http_msg *msg,
382 struct hdr_idx *hdr_idx, const char *text)
383{
384 int bytes, len;
385
386 len = strlen(text);
387 bytes = buffer_insert_line2(b, b->data + msg->eoh, text, len);
388 if (!bytes)
389 return -1;
390 msg->eoh += bytes;
391 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
392}
393
394/*
395 * Adds a header and its CRLF at the tail of buffer <b>, just before the last
396 * CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
397 * the buffer is only opened and the space reserved, but nothing is copied.
398 * The header is also automatically added to the index <hdr_idx>, and the end
399 * of headers is automatically adjusted. The number of bytes added is returned
400 * on success, otherwise <0 is returned indicating an error.
401 */
402int http_header_add_tail2(struct buffer *b, struct http_msg *msg,
403 struct hdr_idx *hdr_idx, const char *text, int len)
404{
405 int bytes;
406
407 bytes = buffer_insert_line2(b, b->data + msg->eoh, text, len);
408 if (!bytes)
409 return -1;
410 msg->eoh += bytes;
411 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
412}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]413
414/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]415 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
416 * If so, returns the position of the first non-space character relative to
417 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
418 * to return a pointer to the place after the first space. Returns 0 if the
419 * header name does not match. Checks are case-insensitive.
420 */
421int http_header_match2(const char *hdr, const char *end,
422 const char *name, int len)
423{
424 const char *val;
425
426 if (hdr + len >= end)
427 return 0;
428 if (hdr[len] != ':')
429 return 0;
430 if (strncasecmp(hdr, name, len) != 0)
431 return 0;
432 val = hdr + len + 1;
433 while (val < end && HTTP_IS_SPHT(*val))
434 val++;
435 if ((val >= end) && (len + 2 <= end - hdr))
436 return len + 2; /* we may replace starting from second space */
437 return val - hdr;
438}
439
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]440/* Find the end of the header value contained between <s> and <e>.
441 * See RFC2616, par 2.2 for more information. Note that it requires
442 * a valid header to return a valid result.
443 */
444const char *find_hdr_value_end(const char *s, const char *e)
445{
446 int quoted, qdpair;
447
448 quoted = qdpair = 0;
449 for (; s < e; s++) {
450 if (qdpair) qdpair = 0;
451 else if (quoted && *s == '\\') qdpair = 1;
452 else if (quoted && *s == '"') quoted = 0;
453 else if (*s == '"') quoted = 1;
454 else if (*s == ',') return s;
455 }
456 return s;
457}
458
459/* Find the first or next occurrence of header <name> in message buffer <sol>
460 * using headers index <idx>, and return it in the <ctx> structure. This
461 * structure holds everything necessary to use the header and find next
462 * occurrence. If its <idx> member is 0, the header is searched from the
463 * beginning. Otherwise, the next occurrence is returned. The function returns
464 * 1 when it finds a value, and 0 when there is no more.
465 */
466int http_find_header2(const char *name, int len,
467 const char *sol, struct hdr_idx *idx,
468 struct hdr_ctx *ctx)
469{
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]470 const char *eol, *sov;
471 int cur_idx;
472
473 if (ctx->idx) {
474 /* We have previously returned a value, let's search
475 * another one on the same line.
476 */
477 cur_idx = ctx->idx;
478 sol = ctx->line;
479 sov = sol + ctx->val + ctx->vlen;
480 eol = sol + idx->v[cur_idx].len;
481
482 if (sov >= eol)
483 /* no more values in this header */
484 goto next_hdr;
485
486 /* values remaining for this header, skip the comma */
487 sov++;
488 while (sov < eol && http_is_lws[(unsigned char)*sov])
489 sov++;
490
491 goto return_hdr;
492 }
493
494 /* first request for this header */
495 sol += hdr_idx_first_pos(idx);
496 cur_idx = hdr_idx_first_idx(idx);
497
498 while (cur_idx) {
499 eol = sol + idx->v[cur_idx].len;
500
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]501 if (len == 0) {
502 /* No argument was passed, we want any header.
503 * To achieve this, we simply build a fake request. */
504 while (sol + len < eol && sol[len] != ':')
505 len++;
506 name = sol;
507 }
508
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]509 if ((len < eol - sol) &&
510 (sol[len] == ':') &&
511 (strncasecmp(sol, name, len) == 0)) {
512
513 sov = sol + len + 1;
514 while (sov < eol && http_is_lws[(unsigned char)*sov])
515 sov++;
516 return_hdr:
517 ctx->line = sol;
518 ctx->idx = cur_idx;
519 ctx->val = sov - sol;
520
521 eol = find_hdr_value_end(sov, eol);
522 ctx->vlen = eol - sov;
523 return 1;
524 }
525 next_hdr:
526 sol = eol + idx->v[cur_idx].cr + 1;
527 cur_idx = idx->v[cur_idx].next;
528 }
529 return 0;
530}
531
532int http_find_header(const char *name,
533 const char *sol, struct hdr_idx *idx,
534 struct hdr_ctx *ctx)
535{
536 return http_find_header2(name, strlen(name), sol, idx, ctx);
537}
538
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]539/* This function handles a server error at the stream interface level. The
540 * stream interface is assumed to be already in a closed state. An optional
541 * message is copied into the input buffer, and an HTTP status code stored.
542 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]543 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]544 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]545static void http_server_error(struct session *t, struct stream_interface *si,
546 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]547{
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]548 buffer_erase(si->ob);
549 buffer_erase(si->ib);
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]550 buffer_write_ena(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]551 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]552 t->txn.status = status;
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]553 buffer_write(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]554 }
555 if (!(t->flags & SN_ERR_MASK))
556 t->flags |= err;
557 if (!(t->flags & SN_FINST_MASK))
558 t->flags |= finst;
559}
560
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]561/* This function returns the appropriate error location for the given session
562 * and message.
563 */
564
565struct chunk *error_message(struct session *s, int msgnum)
566{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]567 if (s->be->errmsg[msgnum].str)
568 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]569 else if (s->fe->errmsg[msgnum].str)
570 return &s->fe->errmsg[msgnum];
571 else
572 return &http_err_chunks[msgnum];
573}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]574
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]575/*
576 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
577 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
578 */
579static http_meth_t find_http_meth(const char *str, const int len)
580{
581 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]582 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]583
584 m = ((unsigned)*str - 'A');
585
586 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]587 for (h = http_methods[m]; h->len > 0; h++) {
588 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]589 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]590 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]591 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]592 };
593 return HTTP_METH_OTHER;
594 }
595 return HTTP_METH_NONE;
596
597}
598
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]599/* Parse the URI from the given transaction (which is assumed to be in request
600 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
601 * It is returned otherwise.
602 */
603static char *
604http_get_path(struct http_txn *txn)
605{
606 char *ptr, *end;
607
608 ptr = txn->req.sol + txn->req.sl.rq.u;
609 end = ptr + txn->req.sl.rq.u_l;
610
611 if (ptr >= end)
612 return NULL;
613
614 /* RFC2616, par. 5.1.2 :
615 * Request-URI = "*" | absuri | abspath | authority
616 */
617
618 if (*ptr == '*')
619 return NULL;
620
621 if (isalpha((unsigned char)*ptr)) {
622 /* this is a scheme as described by RFC3986, par. 3.1 */
623 ptr++;
624 while (ptr < end &&
625 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
626 ptr++;
627 /* skip '://' */
628 if (ptr == end || *ptr++ != ':')
629 return NULL;
630 if (ptr == end || *ptr++ != '/')
631 return NULL;
632 if (ptr == end || *ptr++ != '/')
633 return NULL;
634 }
635 /* skip [user[:passwd]@]host[:[port]] */
636
637 while (ptr < end && *ptr != '/')
638 ptr++;
639
640 if (ptr == end)
641 return NULL;
642
643 /* OK, we got the '/' ! */
644 return ptr;
645}
646
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]647/* Returns a 302 for a redirectable request. This may only be called just after
648 * the stream interface has moved to SI_ST_ASS. Unprocessable requests are
649 * left unchanged and will follow normal proxy processing.
650 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]651void perform_http_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]652{
653 struct http_txn *txn;
654 struct chunk rdr;
655 char *path;
656 int len;
657
658 /* 1: create the response header */
659 rdr.len = strlen(HTTP_302);
660 rdr.str = trash;
661 memcpy(rdr.str, HTTP_302, rdr.len);
662
663 /* 2: add the server's prefix */
664 if (rdr.len + s->srv->rdr_len > sizeof(trash))
665 return;
666
667 memcpy(rdr.str + rdr.len, s->srv->rdr_pfx, s->srv->rdr_len);
668 rdr.len += s->srv->rdr_len;
669
670 /* 3: add the request URI */
671 txn = &s->txn;
672 path = http_get_path(txn);
673 if (!path)
674 return;
675
676 len = txn->req.sl.rq.u_l + (txn->req.sol+txn->req.sl.rq.u) - path;
677 if (rdr.len + len > sizeof(trash) - 4) /* 4 for CRLF-CRLF */
678 return;
679
680 memcpy(rdr.str + rdr.len, path, len);
681 rdr.len += len;
682 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
683 rdr.len += 4;
684
685 /* prepare to return without error. */
Willy Tarreau99126c32008-11-27 10:30:51 +0100[diff] [blame]686 si->shutr(si);
687 si->shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]688 si->err_type = SI_ET_NONE;
689 si->err_loc = NULL;
690 si->state = SI_ST_CLO;
691
692 /* send the message */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]693 http_server_error(s, si, SN_ERR_PRXCOND, SN_FINST_C, 302, &rdr);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]694
695 /* FIXME: we should increase a counter of redirects per server and per backend. */
696 if (s->srv)
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]697 srv_inc_sess_ctr(s->srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]698}
699
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]700/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]701 * that the server side is closed. Note that err_type is actually a
702 * bitmask, where almost only aborts may be cumulated with other
703 * values. We consider that aborted operations are more important
704 * than timeouts or errors due to the fact that nobody else in the
705 * logs might explain incomplete retries. All others should avoid
706 * being cumulated. It should normally not be possible to have multiple
707 * aborts at once, but just in case, the first one in sequence is reported.
708 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]709void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]710{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]711 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]712
713 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]714 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
715 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]716 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]717 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
718 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]719 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]720 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
721 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]722 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]723 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
724 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]725 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]726 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
727 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]728 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]729 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
730 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]731 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]732 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
733 500, error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]734}
735
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]736extern const char sess_term_cond[8];
737extern const char sess_fin_state[8];
738extern const char *monthname[12];
739const char sess_cookie[4] = "NIDV"; /* No cookie, Invalid cookie, cookie for a Down server, Valid cookie */
740const char sess_set_cookie[8] = "N1I3PD5R"; /* No set-cookie, unknown, Set-Cookie Inserted, unknown,
741 Set-cookie seen and left unchanged (passive), Set-cookie Deleted,
742 unknown, Set-cookie Rewritten */
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]743struct pool_head *pool2_requri;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]744struct pool_head *pool2_capture;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]745
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]746/*
747 * send a log for the session when we have enough info about it.
748 * Will not log if the frontend has no log defined.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]749 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]750void http_sess_log(struct session *s)
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]751{
752 char pn[INET6_ADDRSTRLEN + strlen(":65535")];
753 struct proxy *fe = s->fe;
754 struct proxy *be = s->be;
755 struct proxy *prx_log;
756 struct http_txn *txn = &s->txn;
757 int tolog;
758 char *uri, *h;
759 char *svid;
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]760 struct tm tm;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]761 static char tmpline[MAX_SYSLOG_LEN];
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]762 int t_request;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]763 int hdr;
764
765 if (fe->logfac1 < 0 && fe->logfac2 < 0)
766 return;
767 prx_log = fe;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]768
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]769 if (s->cli_addr.ss_family == AF_INET)
770 inet_ntop(AF_INET,
771 (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
772 pn, sizeof(pn));
773 else
774 inet_ntop(AF_INET6,
775 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
776 pn, sizeof(pn));
777
Willy Tarreaub7f694f2008-06-22 17:18:02 +0200[diff] [blame]778 get_localtime(s->logs.accept_date.tv_sec, &tm);
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]779
780 /* FIXME: let's limit ourselves to frontend logging for now. */
781 tolog = fe->to_log;
782
783 h = tmpline;
784 if (fe->to_log & LW_REQHDR &&
785 txn->req.cap &&
786 (h < tmpline + sizeof(tmpline) - 10)) {
787 *(h++) = ' ';
788 *(h++) = '{';
789 for (hdr = 0; hdr < fe->nb_req_cap; hdr++) {
790 if (hdr)
791 *(h++) = '|';
792 if (txn->req.cap[hdr] != NULL)
793 h = encode_string(h, tmpline + sizeof(tmpline) - 7,
794 '#', hdr_encode_map, txn->req.cap[hdr]);
795 }
796 *(h++) = '}';
797 }
798
799 if (fe->to_log & LW_RSPHDR &&
800 txn->rsp.cap &&
801 (h < tmpline + sizeof(tmpline) - 7)) {
802 *(h++) = ' ';
803 *(h++) = '{';
804 for (hdr = 0; hdr < fe->nb_rsp_cap; hdr++) {
805 if (hdr)
806 *(h++) = '|';
807 if (txn->rsp.cap[hdr] != NULL)
808 h = encode_string(h, tmpline + sizeof(tmpline) - 4,
809 '#', hdr_encode_map, txn->rsp.cap[hdr]);
810 }
811 *(h++) = '}';
812 }
813
814 if (h < tmpline + sizeof(tmpline) - 4) {
815 *(h++) = ' ';
816 *(h++) = '"';
817 uri = txn->uri ? txn->uri : "<BADREQ>";
818 h = encode_string(h, tmpline + sizeof(tmpline) - 1,
819 '#', url_encode_map, uri);
820 *(h++) = '"';
821 }
822 *h = '\0';
823
824 svid = (tolog & LW_SVID) ?
825 (s->data_source != DATA_SRC_STATS) ?
826 (s->srv != NULL) ? s->srv->id : "<NOSRV>" : "<STATS>" : "-";
827
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]828 t_request = -1;
829 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
830 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
831
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]832 send_log(prx_log, LOG_INFO,
833 "%s:%d [%02d/%s/%04d:%02d:%02d:%02d.%03d]"
834 " %s %s/%s %d/%d/%d/%d/%s%d %d %s%lld"
Krzysztof Piotr Oledzki25b501a2008-01-06 16:36:16 +0100[diff] [blame]835 " %s %s %c%c%c%c %d/%d/%d/%d/%s%u %d/%d%s\n",
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]836 pn,
837 (s->cli_addr.ss_family == AF_INET) ?
838 ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port) :
839 ntohs(((struct sockaddr_in6 *)&s->cli_addr)->sin6_port),
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]840 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
Willy Tarreaub7f694f2008-06-22 17:18:02 +0200[diff] [blame]841 tm.tm_hour, tm.tm_min, tm.tm_sec, s->logs.accept_date.tv_usec/1000,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]842 fe->id, be->id, svid,
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]843 t_request,
844 (s->logs.t_queue >= 0) ? s->logs.t_queue - t_request : -1,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]845 (s->logs.t_connect >= 0) ? s->logs.t_connect - s->logs.t_queue : -1,
846 (s->logs.t_data >= 0) ? s->logs.t_data - s->logs.t_connect : -1,
847 (tolog & LW_BYTES) ? "" : "+", s->logs.t_close,
848 txn->status,
Willy Tarreau8b3977f2008-01-18 11:16:32 +0100[diff] [blame]849 (tolog & LW_BYTES) ? "" : "+", s->logs.bytes_out,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]850 txn->cli_cookie ? txn->cli_cookie : "-",
851 txn->srv_cookie ? txn->srv_cookie : "-",
852 sess_term_cond[(s->flags & SN_ERR_MASK) >> SN_ERR_SHIFT],
853 sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_FINST_SHIFT],
854 (be->options & PR_O_COOK_ANY) ? sess_cookie[(txn->flags & TX_CK_MASK) >> TX_CK_SHIFT] : '-',
855 (be->options & PR_O_COOK_ANY) ? sess_set_cookie[(txn->flags & TX_SCK_MASK) >> TX_SCK_SHIFT] : '-',
856 actconn, fe->feconn, be->beconn, s->srv ? s->srv->cur_sess : 0,
Krzysztof Piotr Oledzki25b501a2008-01-06 16:36:16 +0100[diff] [blame]857 (s->flags & SN_REDISP)?"+":"",
858 (s->conn_retries>0)?(be->conn_retries - s->conn_retries):be->conn_retries,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]859 s->logs.srv_queue_size, s->logs.prx_queue_size, tmpline);
860
861 s->logs.logwait = 0;
862}
863
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]864
865/*
866 * Capture headers from message starting at <som> according to header list
867 * <cap_hdr>, and fill the <idx> structure appropriately.
868 */
869void capture_headers(char *som, struct hdr_idx *idx,
870 char **cap, struct cap_hdr *cap_hdr)
871{
872 char *eol, *sol, *col, *sov;
873 int cur_idx;
874 struct cap_hdr *h;
875 int len;
876
877 sol = som + hdr_idx_first_pos(idx);
878 cur_idx = hdr_idx_first_idx(idx);
879
880 while (cur_idx) {
881 eol = sol + idx->v[cur_idx].len;
882
883 col = sol;
884 while (col < eol && *col != ':')
885 col++;
886
887 sov = col + 1;
888 while (sov < eol && http_is_lws[(unsigned char)*sov])
889 sov++;
890
891 for (h = cap_hdr; h; h = h->next) {
892 if ((h->namelen == col - sol) &&
893 (strncasecmp(sol, h->name, h->namelen) == 0)) {
894 if (cap[h->index] == NULL)
895 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]896 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]897
898 if (cap[h->index] == NULL) {
899 Alert("HTTP capture : out of memory.\n");
900 continue;
901 }
902
903 len = eol - sov;
904 if (len > h->len)
905 len = h->len;
906
907 memcpy(cap[h->index], sov, len);
908 cap[h->index][len]=0;
909 }
910 }
911 sol = eol + idx->v[cur_idx].cr + 1;
912 cur_idx = idx->v[cur_idx].next;
913 }
914}
915
916
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]917/* either we find an LF at <ptr> or we jump to <bad>.
918 */
919#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
920
921/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
922 * otherwise to <http_msg_ood> with <state> set to <st>.
923 */
924#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
925 ptr++; \
926 if (likely(ptr < end)) \
927 goto good; \
928 else { \
929 state = (st); \
930 goto http_msg_ood; \
931 } \
932 } while (0)
933
934
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]935/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]936 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]937 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
938 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
939 * will give undefined results.
940 * Note that it is upon the caller's responsibility to ensure that ptr < end,
941 * and that msg->sol points to the beginning of the response.
942 * If a complete line is found (which implies that at least one CR or LF is
943 * found before <end>, the updated <ptr> is returned, otherwise NULL is
944 * returned indicating an incomplete line (which does not mean that parts have
945 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
946 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
947 * upon next call.
948 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]949 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]950 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
951 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]952 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]953 */
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]954const char *http_parse_stsline(struct http_msg *msg, const char *msg_buf,
955 unsigned int state, const char *ptr, const char *end,
956 char **ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]957{
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]958 switch (state) {
959 http_msg_rpver:
960 case HTTP_MSG_RPVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]961 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]962 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
963
964 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]965 msg->sl.st.v_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]966 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
967 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]968 state = HTTP_MSG_ERROR;
969 break;
970
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]971 http_msg_rpver_sp:
972 case HTTP_MSG_RPVER_SP:
973 if (likely(!HTTP_IS_LWS(*ptr))) {
974 msg->sl.st.c = ptr - msg_buf;
975 goto http_msg_rpcode;
976 }
977 if (likely(HTTP_IS_SPHT(*ptr)))
978 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
979 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]980 state = HTTP_MSG_ERROR;
981 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]982
983 http_msg_rpcode:
984 case HTTP_MSG_RPCODE:
985 if (likely(!HTTP_IS_LWS(*ptr)))
986 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
987
988 if (likely(HTTP_IS_SPHT(*ptr))) {
989 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
990 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
991 }
992
993 /* so it's a CR/LF, so there is no reason phrase */
994 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
995 http_msg_rsp_reason:
996 /* FIXME: should we support HTTP responses without any reason phrase ? */
997 msg->sl.st.r = ptr - msg_buf;
998 msg->sl.st.r_l = 0;
999 goto http_msg_rpline_eol;
1000
1001 http_msg_rpcode_sp:
1002 case HTTP_MSG_RPCODE_SP:
1003 if (likely(!HTTP_IS_LWS(*ptr))) {
1004 msg->sl.st.r = ptr - msg_buf;
1005 goto http_msg_rpreason;
1006 }
1007 if (likely(HTTP_IS_SPHT(*ptr)))
1008 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1009 /* so it's a CR/LF, so there is no reason phrase */
1010 goto http_msg_rsp_reason;
1011
1012 http_msg_rpreason:
1013 case HTTP_MSG_RPREASON:
1014 if (likely(!HTTP_IS_CRLF(*ptr)))
1015 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
1016 msg->sl.st.r_l = (ptr - msg_buf) - msg->sl.st.r;
1017 http_msg_rpline_eol:
1018 /* We have seen the end of line. Note that we do not
1019 * necessarily have the \n yet, but at least we know that we
1020 * have EITHER \r OR \n, otherwise the response would not be
1021 * complete. We can then record the response length and return
1022 * to the caller which will be able to register it.
1023 */
1024 msg->sl.st.l = ptr - msg->sol;
1025 return ptr;
1026
1027#ifdef DEBUG_FULL
1028 default:
1029 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1030 exit(1);
1031#endif
1032 }
1033
1034 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1035 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1036 if (ret_state)
1037 *ret_state = state;
1038 if (ret_ptr)
1039 *ret_ptr = (char *)ptr;
1040 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1041}
1042
1043
1044/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1045 * This function parses a request line between <ptr> and <end>, starting with
1046 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1047 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1048 * will give undefined results.
1049 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1050 * and that msg->sol points to the beginning of the request.
1051 * If a complete line is found (which implies that at least one CR or LF is
1052 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1053 * returned indicating an incomplete line (which does not mean that parts have
1054 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1055 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1056 * upon next call.
1057 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1058 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1059 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1060 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1061 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1062 */
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1063const char *http_parse_reqline(struct http_msg *msg, const char *msg_buf,
1064 unsigned int state, const char *ptr, const char *end,
1065 char **ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1066{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1067 switch (state) {
1068 http_msg_rqmeth:
1069 case HTTP_MSG_RQMETH:
1070 if (likely(HTTP_IS_TOKEN(*ptr)))
1071 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1072
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1073 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1074 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1075 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1076 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1077
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1078 if (likely(HTTP_IS_CRLF(*ptr))) {
1079 /* HTTP 0.9 request */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1080 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1081 http_msg_req09_uri:
1082 msg->sl.rq.u = ptr - msg_buf;
1083 http_msg_req09_uri_e:
1084 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1085 http_msg_req09_ver:
1086 msg->sl.rq.v = ptr - msg_buf;
1087 msg->sl.rq.v_l = 0;
1088 goto http_msg_rqline_eol;
1089 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1090 state = HTTP_MSG_ERROR;
1091 break;
1092
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1093 http_msg_rqmeth_sp:
1094 case HTTP_MSG_RQMETH_SP:
1095 if (likely(!HTTP_IS_LWS(*ptr))) {
1096 msg->sl.rq.u = ptr - msg_buf;
1097 goto http_msg_rquri;
1098 }
1099 if (likely(HTTP_IS_SPHT(*ptr)))
1100 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1101 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1102 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1103
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1104 http_msg_rquri:
1105 case HTTP_MSG_RQURI:
1106 if (likely(!HTTP_IS_LWS(*ptr)))
1107 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1108
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1109 if (likely(HTTP_IS_SPHT(*ptr))) {
1110 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1111 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1112 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1113
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1114 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1115 goto http_msg_req09_uri_e;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1116
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1117 http_msg_rquri_sp:
1118 case HTTP_MSG_RQURI_SP:
1119 if (likely(!HTTP_IS_LWS(*ptr))) {
1120 msg->sl.rq.v = ptr - msg_buf;
1121 goto http_msg_rqver;
1122 }
1123 if (likely(HTTP_IS_SPHT(*ptr)))
1124 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1125 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1126 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1127
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1128 http_msg_rqver:
1129 case HTTP_MSG_RQVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1130 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1131 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1132
1133 if (likely(HTTP_IS_CRLF(*ptr))) {
1134 msg->sl.rq.v_l = (ptr - msg_buf) - msg->sl.rq.v;
1135 http_msg_rqline_eol:
1136 /* We have seen the end of line. Note that we do not
1137 * necessarily have the \n yet, but at least we know that we
1138 * have EITHER \r OR \n, otherwise the request would not be
1139 * complete. We can then record the request length and return
1140 * to the caller which will be able to register it.
1141 */
1142 msg->sl.rq.l = ptr - msg->sol;
1143 return ptr;
1144 }
1145
1146 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1147 state = HTTP_MSG_ERROR;
1148 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1149
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1150#ifdef DEBUG_FULL
1151 default:
1152 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1153 exit(1);
1154#endif
1155 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1156
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1157 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1158 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1159 if (ret_state)
1160 *ret_state = state;
1161 if (ret_ptr)
1162 *ret_ptr = (char *)ptr;
1163 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1164}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1165
1166
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1167/*
1168 * This function parses an HTTP message, either a request or a response,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1169 * depending on the initial msg->msg_state. It can be preempted everywhere
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1170 * when data are missing and recalled at the exact same location with no
1171 * information loss. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1172 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
1173 * fields.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1174 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1175void http_msg_analyzer(struct buffer *buf, struct http_msg *msg, struct hdr_idx *idx)
1176{
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1177 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1178 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1179
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1180 state = msg->msg_state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1181 ptr = buf->lr;
1182 end = buf->r;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1183
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1184 if (unlikely(ptr >= end))
1185 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1186
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1187 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1188 /*
1189 * First, states that are specific to the response only.
1190 * We check them first so that request and headers are
1191 * closer to each other (accessed more often).
1192 */
1193 http_msg_rpbefore:
1194 case HTTP_MSG_RPBEFORE:
1195 if (likely(HTTP_IS_TOKEN(*ptr))) {
1196 if (likely(ptr == buf->data)) {
1197 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1198 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1199 } else {
1200#if PARSE_PRESERVE_EMPTY_LINES
1201 /* only skip empty leading lines, don't remove them */
1202 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1203 msg->som = ptr - buf->data;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1204#else
1205 /* Remove empty leading lines, as recommended by
1206 * RFC2616. This takes a lot of time because we
1207 * must move all the buffer backwards, but this
1208 * is rarely needed. The method above will be
1209 * cleaner when we'll be able to start sending
1210 * the request from any place in the buffer.
1211 */
1212 buf->lr = ptr;
1213 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1214 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1215 msg->sol = buf->data;
1216 ptr = buf->data;
1217 end = buf->r;
1218#endif
1219 }
1220 hdr_idx_init(idx);
1221 state = HTTP_MSG_RPVER;
1222 goto http_msg_rpver;
1223 }
1224
1225 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1226 goto http_msg_invalid;
1227
1228 if (unlikely(*ptr == '\n'))
1229 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1230 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1231 /* stop here */
1232
1233 http_msg_rpbefore_cr:
1234 case HTTP_MSG_RPBEFORE_CR:
1235 EXPECT_LF_HERE(ptr, http_msg_invalid);
1236 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1237 /* stop here */
1238
1239 http_msg_rpver:
1240 case HTTP_MSG_RPVER:
1241 case HTTP_MSG_RPVER_SP:
1242 case HTTP_MSG_RPCODE:
1243 case HTTP_MSG_RPCODE_SP:
1244 case HTTP_MSG_RPREASON:
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1245 ptr = (char *)http_parse_stsline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1246 &buf->lr, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1247 if (unlikely(!ptr))
1248 return;
1249
1250 /* we have a full response and we know that we have either a CR
1251 * or an LF at <ptr>.
1252 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1253 //fprintf(stderr,"som=%d rq.l=%d *ptr=0x%02x\n", msg->som, msg->sl.st.l, *ptr);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1254 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1255
1256 msg->sol = ptr;
1257 if (likely(*ptr == '\r'))
1258 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1259 goto http_msg_rpline_end;
1260
1261 http_msg_rpline_end:
1262 case HTTP_MSG_RPLINE_END:
1263 /* msg->sol must point to the first of CR or LF. */
1264 EXPECT_LF_HERE(ptr, http_msg_invalid);
1265 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1266 /* stop here */
1267
1268 /*
1269 * Second, states that are specific to the request only
1270 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1271 http_msg_rqbefore:
1272 case HTTP_MSG_RQBEFORE:
1273 if (likely(HTTP_IS_TOKEN(*ptr))) {
1274 if (likely(ptr == buf->data)) {
1275 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1276 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1277 } else {
1278#if PARSE_PRESERVE_EMPTY_LINES
1279 /* only skip empty leading lines, don't remove them */
1280 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1281 msg->som = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1282#else
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1283 /* Remove empty leading lines, as recommended by
1284 * RFC2616. This takes a lot of time because we
1285 * must move all the buffer backwards, but this
1286 * is rarely needed. The method above will be
1287 * cleaner when we'll be able to start sending
1288 * the request from any place in the buffer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1289 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1290 buf->lr = ptr;
1291 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1292 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1293 msg->sol = buf->data;
1294 ptr = buf->data;
1295 end = buf->r;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1296#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1297 }
Willy Tarreauf0d058e2007-01-25 12:03:42 +0100[diff] [blame]1298 /* we will need this when keep-alive will be supported
1299 hdr_idx_init(idx);
1300 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1301 state = HTTP_MSG_RQMETH;
1302 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1303 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1304
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1305 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1306 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1307
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1308 if (unlikely(*ptr == '\n'))
1309 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1310 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1311 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1312
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1313 http_msg_rqbefore_cr:
1314 case HTTP_MSG_RQBEFORE_CR:
1315 EXPECT_LF_HERE(ptr, http_msg_invalid);
1316 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1317 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1318
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1319 http_msg_rqmeth:
1320 case HTTP_MSG_RQMETH:
1321 case HTTP_MSG_RQMETH_SP:
1322 case HTTP_MSG_RQURI:
1323 case HTTP_MSG_RQURI_SP:
1324 case HTTP_MSG_RQVER:
1325 ptr = (char *)http_parse_reqline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1326 &buf->lr, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1327 if (unlikely(!ptr))
1328 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1329
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1330 /* we have a full request and we know that we have either a CR
1331 * or an LF at <ptr>.
1332 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1333 //fprintf(stderr,"som=%d rq.l=%d *ptr=0x%02x\n", msg->som, msg->sl.rq.l, *ptr);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1334 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1335
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1336 msg->sol = ptr;
1337 if (likely(*ptr == '\r'))
1338 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1339 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1340
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1341 http_msg_rqline_end:
1342 case HTTP_MSG_RQLINE_END:
1343 /* check for HTTP/0.9 request : no version information available.
1344 * msg->sol must point to the first of CR or LF.
1345 */
1346 if (unlikely(msg->sl.rq.v_l == 0))
1347 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1348
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1349 EXPECT_LF_HERE(ptr, http_msg_invalid);
1350 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1351 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1352
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1353 /*
1354 * Common states below
1355 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1356 http_msg_hdr_first:
1357 case HTTP_MSG_HDR_FIRST:
1358 msg->sol = ptr;
1359 if (likely(!HTTP_IS_CRLF(*ptr))) {
1360 goto http_msg_hdr_name;
1361 }
1362
1363 if (likely(*ptr == '\r'))
1364 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1365 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1366
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1367 http_msg_hdr_name:
1368 case HTTP_MSG_HDR_NAME:
1369 /* assumes msg->sol points to the first char */
1370 if (likely(HTTP_IS_TOKEN(*ptr)))
1371 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1372
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1373 if (likely(*ptr == ':')) {
1374 msg->col = ptr - buf->data;
1375 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
1376 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1377
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1378 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1379
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1380 http_msg_hdr_l1_sp:
1381 case HTTP_MSG_HDR_L1_SP:
1382 /* assumes msg->sol points to the first char and msg->col to the colon */
1383 if (likely(HTTP_IS_SPHT(*ptr)))
1384 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]1385
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1386 /* header value can be basically anything except CR/LF */
1387 msg->sov = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1388
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1389 if (likely(!HTTP_IS_CRLF(*ptr))) {
1390 goto http_msg_hdr_val;
1391 }
1392
1393 if (likely(*ptr == '\r'))
1394 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1395 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1396
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1397 http_msg_hdr_l1_lf:
1398 case HTTP_MSG_HDR_L1_LF:
1399 EXPECT_LF_HERE(ptr, http_msg_invalid);
1400 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]1401
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1402 http_msg_hdr_l1_lws:
1403 case HTTP_MSG_HDR_L1_LWS:
1404 if (likely(HTTP_IS_SPHT(*ptr))) {
1405 /* replace HT,CR,LF with spaces */
1406 for (; buf->data+msg->sov < ptr; msg->sov++)
1407 buf->data[msg->sov] = ' ';
1408 goto http_msg_hdr_l1_sp;
1409 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1410 /* we had a header consisting only in spaces ! */
1411 msg->eol = buf->data + msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1412 goto http_msg_complete_header;
1413
1414 http_msg_hdr_val:
1415 case HTTP_MSG_HDR_VAL:
1416 /* assumes msg->sol points to the first char, msg->col to the
1417 * colon, and msg->sov points to the first character of the
1418 * value.
1419 */
1420 if (likely(!HTTP_IS_CRLF(*ptr)))
1421 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1422
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1423 msg->eol = ptr;
1424 /* Note: we could also copy eol into ->eoh so that we have the
1425 * real header end in case it ends with lots of LWS, but is this
1426 * really needed ?
1427 */
1428 if (likely(*ptr == '\r'))
1429 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1430 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1431
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1432 http_msg_hdr_l2_lf:
1433 case HTTP_MSG_HDR_L2_LF:
1434 EXPECT_LF_HERE(ptr, http_msg_invalid);
1435 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]1436
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1437 http_msg_hdr_l2_lws:
1438 case HTTP_MSG_HDR_L2_LWS:
1439 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1440 /* LWS: replace HT,CR,LF with spaces */
1441 for (; msg->eol < ptr; msg->eol++)
1442 *msg->eol = ' ';
1443 goto http_msg_hdr_val;
1444 }
1445 http_msg_complete_header:
1446 /*
1447 * It was a new header, so the last one is finished.
1448 * Assumes msg->sol points to the first char, msg->col to the
1449 * colon, msg->sov points to the first character of the value
1450 * and msg->eol to the first CR or LF so we know how the line
1451 * ends. We insert last header into the index.
1452 */
1453 /*
1454 fprintf(stderr,"registering %-2d bytes : ", msg->eol - msg->sol);
1455 write(2, msg->sol, msg->eol-msg->sol);
1456 fprintf(stderr,"\n");
1457 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1458
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1459 if (unlikely(hdr_idx_add(msg->eol - msg->sol, *msg->eol == '\r',
1460 idx, idx->tail) < 0))
1461 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1462
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1463 msg->sol = ptr;
1464 if (likely(!HTTP_IS_CRLF(*ptr))) {
1465 goto http_msg_hdr_name;
1466 }
1467
1468 if (likely(*ptr == '\r'))
1469 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1470 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1471
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1472 http_msg_last_lf:
1473 case HTTP_MSG_LAST_LF:
1474 /* Assumes msg->sol points to the first of either CR or LF */
1475 EXPECT_LF_HERE(ptr, http_msg_invalid);
1476 ptr++;
1477 buf->lr = ptr;
1478 msg->eoh = msg->sol - buf->data;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1479 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1480 return;
1481#ifdef DEBUG_FULL
1482 default:
1483 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1484 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1485#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1486 }
1487 http_msg_ood:
1488 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1489 msg->msg_state = state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1490 buf->lr = ptr;
1491 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1492
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1493 http_msg_invalid:
1494 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1495 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1496 buf->lr = ptr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1497 return;
1498}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1499
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1500/* This function performs all the processing enabled for the current request.
Willy Tarreauedcf6682008-11-30 23:15:34 +0100[diff] [blame]1501 * It returns 1 if the processing can continue on next analysers, or zero if it
1502 * needs more data, encounters an error, or wants to immediately abort the
1503 * request. It relies on buffers flags, and updates s->req->analysers. Its
1504 * behaviour is rather simple:
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]1505 * - all enabled analysers are called in turn from the lower to the higher
1506 * bit.
Willy Tarreauedcf6682008-11-30 23:15:34 +0100[diff] [blame]1507 * - the analyser must check for errors and timeouts, and react as expected.
1508 * It does not have to close anything upon error, the caller will.
1509 * - if the analyser does not have enough data, it must return 0without calling
1510 * other ones. It should also probably do a buffer_write_dis() to ensure
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]1511 * that unprocessed data will not be forwarded. But that probably depends on
Willy Tarreauedcf6682008-11-30 23:15:34 +0100[diff] [blame]1512 * the protocol.
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]1513 * - if an analyser has enough data, it just has to pass on to the next
Willy Tarreauedcf6682008-11-30 23:15:34 +0100[diff] [blame]1514 * analyser without using buffer_write_dis() (enabled by default).
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]1515 * - if an analyser thinks it has no added value anymore staying here, it must
1516 * reset its bit from the analysers flags in order not to be called anymore.
1517 *
1518 * In the future, analysers should be able to indicate that they want to be
1519 * called after XXX bytes have been received (or transfered), and the min of
1520 * all's wishes will be used to ring back (unless a special condition occurs).
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1521 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1522int http_process_request(struct session *s, struct buffer *req)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1523{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1524 /*
1525 * We will parse the partial (or complete) lines.
1526 * We will check the request syntax, and also join multi-line
1527 * headers. An index of all the lines will be elaborated while
1528 * parsing.
1529 *
1530 * For the parsing, we use a 28 states FSM.
1531 *
1532 * Here is the information we currently have :
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]1533 * req->data + msg->som = beginning of request
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1534 * req->data + req->eoh = end of processed headers / start of current one
1535 * req->data + req->eol = end of current header or line (LF or CRLF)
1536 * req->lr = first non-visited byte
1537 * req->r = end of data
1538 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1539
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1540 int cur_idx;
1541 struct http_txn *txn = &s->txn;
1542 struct http_msg *msg = &txn->req;
1543 struct proxy *cur_proxy;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1544
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]1545 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
1546 now_ms, __FUNCTION__,
1547 s,
1548 req,
1549 req->rex, req->wex,
1550 req->flags,
1551 req->l,
1552 req->analysers);
1553
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1554 if (likely(req->lr < req->r))
1555 http_msg_analyzer(req, msg, &txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1556
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1557 /* 1: we might have to print this header in debug mode */
1558 if (unlikely((global.mode & MODE_DEBUG) &&
1559 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
1560 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
1561 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1562
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1563 sol = req->data + msg->som;
1564 eol = sol + msg->sl.rq.l;
1565 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1566
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1567 sol += hdr_idx_first_pos(&txn->hdr_idx);
1568 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1569
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1570 while (cur_idx) {
1571 eol = sol + txn->hdr_idx.v[cur_idx].len;
1572 debug_hdr("clihdr", s, sol, eol);
1573 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
1574 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1575 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1576 }
1577
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1578
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1579 /*
1580 * Now we quickly check if we have found a full valid request.
1581 * If not so, we check the FD and buffer states before leaving.
1582 * A full request is indicated by the fact that we have seen
1583 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
1584 * requests are checked first.
1585 *
1586 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1587
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1588 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1589 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1590 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1591 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1592 if (unlikely(msg->msg_state == HTTP_MSG_ERROR))
1593 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1594
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1595 /* 1: Since we are in header mode, if there's no space
1596 * left for headers, we won't be able to free more
1597 * later, so the session will never terminate. We
1598 * must terminate it now.
1599 */
1600 if (unlikely(req->flags & BF_FULL)) {
1601 /* FIXME: check if URI is set and return Status
1602 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1603 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1604 goto return_bad_req;
1605 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1606
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1607 /* 2: have we encountered a read error ? */
1608 else if (req->flags & BF_READ_ERROR) {
1609 /* we cannot return any message on error */
1610 msg->msg_state = HTTP_MSG_ERROR;
1611 req->analysers = 0;
1612 s->fe->failed_req++;
1613 if (!(s->flags & SN_ERR_MASK))
1614 s->flags |= SN_ERR_CLICL;
1615 if (!(s->flags & SN_FINST_MASK))
1616 s->flags |= SN_FINST_R;
1617 return 0;
1618 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]1619
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1620 /* 3: has the read timeout expired ? */
1621 else if (req->flags & BF_READ_TIMEOUT || tick_is_expired(req->analyse_exp, now_ms)) {
1622 /* read timeout : give up with an error message. */
1623 txn->status = 408;
1624 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_408));
1625 msg->msg_state = HTTP_MSG_ERROR;
1626 req->analysers = 0;
1627 s->fe->failed_req++;
1628 if (!(s->flags & SN_ERR_MASK))
1629 s->flags |= SN_ERR_CLITO;
1630 if (!(s->flags & SN_FINST_MASK))
1631 s->flags |= SN_FINST_R;
1632 return 0;
1633 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1634
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1635 /* 4: have we encountered a close ? */
1636 else if (req->flags & BF_SHUTR) {
1637 txn->status = 400;
1638 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
1639 msg->msg_state = HTTP_MSG_ERROR;
1640 req->analysers = 0;
1641 s->fe->failed_req++;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1642
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1643 if (!(s->flags & SN_ERR_MASK))
1644 s->flags |= SN_ERR_CLICL;
1645 if (!(s->flags & SN_FINST_MASK))
1646 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]1647 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1648 }
1649
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1650 buffer_write_dis(req);
1651 /* just set the request timeout once at the beginning of the request */
1652 if (!tick_isset(req->analyse_exp))
1653 req->analyse_exp = tick_add_ifset(now_ms, s->fe->timeout.httpreq);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1654
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1655 /* we're not ready yet */
1656 return 0;
1657 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1658
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]1659
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1660 /****************************************************************
1661 * More interesting part now : we know that we have a complete *
1662 * request which at least looks like HTTP. We have an indicator *
1663 * of each header's length, so we can parse them quickly. *
1664 ****************************************************************/
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1665
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1666 req->analysers &= ~AN_REQ_HTTP_HDR;
1667 req->analyse_exp = TICK_ETERNITY;
1668
1669 /* ensure we keep this pointer to the beginning of the message */
1670 msg->sol = req->data + msg->som;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1671
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1672 /*
1673 * 1: identify the method
1674 */
1675 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
1676
1677 /* we can make use of server redirect on GET and HEAD */
1678 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
1679 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]1680
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1681 /*
1682 * 2: check if the URI matches the monitor_uri.
1683 * We have to do this for every request which gets in, because
1684 * the monitor-uri is defined by the frontend.
1685 */
1686 if (unlikely((s->fe->monitor_uri_len != 0) &&
1687 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
1688 !memcmp(&req->data[msg->sl.rq.u],
1689 s->fe->monitor_uri,
1690 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1691 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1692 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1693 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1694 struct acl_cond *cond;
1695 cur_proxy = s->fe;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1696
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1697 s->flags |= SN_MONITOR;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1698
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1699 /* Check if we want to fail this monitor request or not */
1700 list_for_each_entry(cond, &cur_proxy->mon_fail_cond, list) {
1701 int ret = acl_exec_cond(cond, cur_proxy, s, txn, ACL_DIR_REQ);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1702
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1703 ret = acl_pass(ret);
1704 if (cond->pol == ACL_COND_UNLESS)
1705 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1706
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1707 if (ret) {
1708 /* we fail this request, let's return 503 service unavail */
1709 txn->status = 503;
1710 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_503));
1711 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1712 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1713 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]1714
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1715 /* nothing to fail, let's reply normaly */
1716 txn->status = 200;
1717 stream_int_retnclose(req->prod, &http_200_chunk);
1718 goto return_prx_cond;
1719 }
1720
1721 /*
1722 * 3: Maybe we have to copy the original REQURI for the logs ?
1723 * Note: we cannot log anymore if the request has been
1724 * classified as invalid.
1725 */
1726 if (unlikely(s->logs.logwait & LW_REQ)) {
1727 /* we have a complete HTTP request that we must log */
1728 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
1729 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1730
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1731 if (urilen >= REQURI_LEN)
1732 urilen = REQURI_LEN - 1;
1733 memcpy(txn->uri, &req->data[msg->som], urilen);
1734 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1735
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1736 if (!(s->logs.logwait &= ~LW_REQ))
1737 s->do_log(s);
1738 } else {
1739 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1740 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1741 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1742
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1743 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
1744 if (unlikely(msg->sl.rq.v_l == 0)) {
1745 int delta;
1746 char *cur_end;
1747 msg->sol = req->data + msg->som;
1748 cur_end = msg->sol + msg->sl.rq.l;
1749 delta = 0;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1750
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1751 if (msg->sl.rq.u_l == 0) {
1752 /* if no URI was set, add "/" */
1753 delta = buffer_replace2(req, cur_end, cur_end, " /", 2);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1754 cur_end += delta;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1755 msg->eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1756 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1757 /* add HTTP version */
1758 delta = buffer_replace2(req, cur_end, cur_end, " HTTP/1.0\r\n", 11);
1759 msg->eoh += delta;
1760 cur_end += delta;
1761 cur_end = (char *)http_parse_reqline(msg, req->data,
1762 HTTP_MSG_RQMETH,
1763 msg->sol, cur_end + 1,
1764 NULL, NULL);
1765 if (unlikely(!cur_end))
1766 goto return_bad_req;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1767
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1768 /* we have a full HTTP/1.0 request now and we know that
1769 * we have either a CR or an LF at <ptr>.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1770 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1771 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1772 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1773
1774
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1775 /* 5: we may need to capture headers */
1776 if (unlikely((s->logs.logwait & LW_REQHDR) && s->fe->req_cap))
1777 capture_headers(req->data + msg->som, &txn->hdr_idx,
1778 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1779
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1780 /*
1781 * 6: we will have to evaluate the filters.
1782 * As opposed to version 1.2, now they will be evaluated in the
1783 * filters order and not in the header order. This means that
1784 * each filter has to be validated among all headers.
1785 *
1786 * We can now check whether we want to switch to another
1787 * backend, in which case we will re-check the backend's
1788 * filters and various options. In order to support 3-level
1789 * switching, here's how we should proceed :
1790 *
1791 * a) run be.
1792 * if (switch) then switch ->be to the new backend.
1793 * b) run be if (be != fe).
1794 * There cannot be any switch from there, so ->be cannot be
1795 * changed anymore.
1796 *
1797 * => filters always apply to ->be, then ->be may change.
1798 *
1799 * The response path will be able to apply either ->be, or
1800 * ->be then ->fe filters in order to match the reverse of
1801 * the forward sequence.
1802 */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1803
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1804 do {
1805 struct acl_cond *cond;
1806 struct redirect_rule *rule;
1807 struct proxy *rule_set = s->be;
1808 cur_proxy = s->be;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1809
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1810 /* first check whether we have some ACLs set to redirect this request */
1811 list_for_each_entry(rule, &cur_proxy->redirect_rules, list) {
1812 int ret = acl_exec_cond(rule->cond, cur_proxy, s, txn, ACL_DIR_REQ);
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1813
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1814 ret = acl_pass(ret);
1815 if (rule->cond->pol == ACL_COND_UNLESS)
1816 ret = !ret;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1817
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1818 if (ret) {
1819 struct chunk rdr = { trash, 0 };
1820 const char *msg_fmt;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1821
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1822 /* build redirect message */
1823 switch(rule->code) {
1824 case 303:
1825 rdr.len = strlen(HTTP_303);
1826 msg_fmt = HTTP_303;
1827 break;
1828 case 301:
1829 rdr.len = strlen(HTTP_301);
1830 msg_fmt = HTTP_301;
1831 break;
1832 case 302:
1833 default:
1834 rdr.len = strlen(HTTP_302);
1835 msg_fmt = HTTP_302;
1836 break;
1837 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1838
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1839 if (unlikely(rdr.len > sizeof(trash)))
1840 goto return_bad_req;
1841 memcpy(rdr.str, msg_fmt, rdr.len);
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1842
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1843 switch(rule->type) {
1844 case REDIRECT_TYPE_PREFIX: {
1845 const char *path;
1846 int pathlen;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1847
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1848 path = http_get_path(txn);
1849 /* build message using path */
1850 if (path) {
1851 pathlen = txn->req.sl.rq.u_l + (txn->req.sol+txn->req.sl.rq.u) - path;
Willy Tarreau79da4692008-11-19 20:03:04 +0100[diff] [blame]1852 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
1853 int qs = 0;
1854 while (qs < pathlen) {
1855 if (path[qs] == '?') {
1856 pathlen = qs;
1857 break;
1858 }
1859 qs++;
1860 }
1861 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1862 } else {
1863 path = "/";
1864 pathlen = 1;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1865 }
1866
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1867 if (rdr.len + rule->rdr_len + pathlen > sizeof(trash) - 4)
1868 goto return_bad_req;
1869
Willy Tarreaufe651a52008-11-19 21:15:17 +0100[diff] [blame]1870 /* add prefix. Note that if prefix == "/", we don't want to
1871 * add anything, otherwise it makes it hard for the user to
1872 * configure a self-redirection.
1873 */
1874 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
1875 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
1876 rdr.len += rule->rdr_len;
1877 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1878
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1879 /* add path */
1880 memcpy(rdr.str + rdr.len, path, pathlen);
1881 rdr.len += pathlen;
1882 break;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1883 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1884 case REDIRECT_TYPE_LOCATION:
1885 default:
1886 if (rdr.len + rule->rdr_len > sizeof(trash) - 4)
1887 goto return_bad_req;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1888
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1889 /* add location */
1890 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
1891 rdr.len += rule->rdr_len;
1892 break;
1893 }
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1894
Willy Tarreau0140f252008-11-19 21:07:09 +0100[diff] [blame]1895 if (rule->cookie_len) {
1896 memcpy(rdr.str + rdr.len, "\r\nSet-Cookie: ", 14);
1897 rdr.len += 14;
1898 memcpy(rdr.str + rdr.len, rule->cookie_str, rule->cookie_len);
1899 rdr.len += rule->cookie_len;
1900 memcpy(rdr.str + rdr.len, "\r\n", 2);
1901 rdr.len += 2;
1902 }
1903
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1904 /* add end of headers */
1905 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
1906 rdr.len += 4;
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1907
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1908 txn->status = rule->code;
1909 /* let's log the request time */
1910 s->logs.tv_request = now;
1911 stream_int_retnclose(req->prod, &rdr);
1912 goto return_prx_cond;
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1913 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1914 }
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1915
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1916 /* first check whether we have some ACLs set to block this request */
1917 list_for_each_entry(cond, &cur_proxy->block_cond, list) {
1918 int ret = acl_exec_cond(cond, cur_proxy, s, txn, ACL_DIR_REQ);
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1919
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1920 ret = acl_pass(ret);
1921 if (cond->pol == ACL_COND_UNLESS)
1922 ret = !ret;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1923
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1924 if (ret) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1925 txn->status = 403;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1926 /* let's log the request time */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1927 s->logs.tv_request = now;
1928 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_403));
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1929 goto return_prx_cond;
1930 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1931 }
1932
1933 /* try headers filters */
1934 if (rule_set->req_exp != NULL) {
1935 if (apply_filters_to_request(s, req, rule_set->req_exp) < 0)
1936 goto return_bad_req;
1937 }
1938
1939 if (!(s->flags & SN_BE_ASSIGNED) && (s->be != cur_proxy)) {
1940 /* to ensure correct connection accounting on
1941 * the backend, we count the connection for the
1942 * one managing the queue.
1943 */
1944 s->be->beconn++;
1945 if (s->be->beconn > s->be->beconn_max)
1946 s->be->beconn_max = s->be->beconn;
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]1947 proxy_inc_be_ctr(s->be);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1948 s->flags |= SN_BE_ASSIGNED;
1949 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1950
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1951 /* has the request been denied ? */
1952 if (txn->flags & TX_CLDENY) {
1953 /* no need to go further */
1954 txn->status = 403;
1955 /* let's log the request time */
1956 s->logs.tv_request = now;
1957 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_403));
1958 goto return_prx_cond;
1959 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1960
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1961 /* We might have to check for "Connection:" */
1962 if (((s->fe->options | s->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
1963 !(s->flags & SN_CONN_CLOSED)) {
1964 char *cur_ptr, *cur_end, *cur_next;
1965 int cur_idx, old_idx, delta, val;
1966 struct hdr_idx_elem *cur_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1967
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1968 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
1969 old_idx = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1970
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1971 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
1972 cur_hdr = &txn->hdr_idx.v[cur_idx];
1973 cur_ptr = cur_next;
1974 cur_end = cur_ptr + cur_hdr->len;
1975 cur_next = cur_end + cur_hdr->cr + 1;
1976
1977 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
1978 if (val) {
1979 /* 3 possibilities :
1980 * - we have already set Connection: close,
1981 * so we remove this line.
1982 * - we have not yet set Connection: close,
1983 * but this line indicates close. We leave
1984 * it untouched and set the flag.
1985 * - we have not yet set Connection: close,
1986 * and this line indicates non-close. We
1987 * replace it.
1988 */
1989 if (s->flags & SN_CONN_CLOSED) {
1990 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
1991 txn->req.eoh += delta;
1992 cur_next += delta;
1993 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
1994 txn->hdr_idx.used--;
1995 cur_hdr->len = 0;
1996 } else {
1997 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
1998 delta = buffer_replace2(req, cur_ptr + val, cur_end,
1999 "close", 5);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2000 cur_next += delta;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2001 cur_hdr->len += delta;
2002 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2003 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2004 s->flags |= SN_CONN_CLOSED;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2005 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2006 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2007 old_idx = cur_idx;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2008 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2009 }
2010 /* add request headers from the rule sets in the same order */
2011 for (cur_idx = 0; cur_idx < rule_set->nb_reqadd; cur_idx++) {
2012 if (unlikely(http_header_add_tail(req,
2013 &txn->req,
2014 &txn->hdr_idx,
2015 rule_set->req_add[cur_idx])) < 0)
2016 goto return_bad_req;
2017 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2018
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2019 /* check if stats URI was requested, and if an auth is needed */
2020 if (rule_set->uri_auth != NULL &&
2021 (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)) {
2022 /* we have to check the URI and auth for this request.
2023 * FIXME!!! that one is rather dangerous, we want to
2024 * make it follow standard rules (eg: clear req->analysers).
2025 */
2026 if (stats_check_uri_auth(s, rule_set)) {
2027 req->analysers = 0;
2028 return 0;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2029 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2030 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2031
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2032 /* now check whether we have some switching rules for this request */
2033 if (!(s->flags & SN_BE_ASSIGNED)) {
2034 struct switching_rule *rule;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2035
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2036 list_for_each_entry(rule, &cur_proxy->switching_rules, list) {
2037 int ret;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2038
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2039 ret = acl_exec_cond(rule->cond, cur_proxy, s, txn, ACL_DIR_REQ);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2040
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2041 ret = acl_pass(ret);
2042 if (rule->cond->pol == ACL_COND_UNLESS)
2043 ret = !ret;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2044
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2045 if (ret) {
2046 s->be = rule->be.backend;
2047 s->be->beconn++;
2048 if (s->be->beconn > s->be->beconn_max)
2049 s->be->beconn_max = s->be->beconn;
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]2050 proxy_inc_be_ctr(s->be);
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]2051
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2052 /* assign new parameters to the session from the new backend */
2053 s->rep->rto = s->req->wto = s->be->timeout.server;
2054 s->req->cto = s->be->timeout.connect;
2055 s->conn_retries = s->be->conn_retries;
2056 s->flags |= SN_BE_ASSIGNED;
2057 break;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2058 }
2059 }
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]2060 }
2061
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2062 if (!(s->flags & SN_BE_ASSIGNED) && cur_proxy->defbe.be) {
2063 /* No backend was set, but there was a default
2064 * backend set in the frontend, so we use it and
2065 * loop again.
2066 */
2067 s->be = cur_proxy->defbe.be;
2068 s->be->beconn++;
2069 if (s->be->beconn > s->be->beconn_max)
2070 s->be->beconn_max = s->be->beconn;
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]2071 proxy_inc_be_ctr(s->be);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2072
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2073 /* assign new parameters to the session from the new backend */
2074 s->rep->rto = s->req->wto = s->be->timeout.server;
2075 s->req->cto = s->be->timeout.connect;
2076 s->conn_retries = s->be->conn_retries;
2077 s->flags |= SN_BE_ASSIGNED;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]2078 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2079 } while (s->be != cur_proxy); /* we loop only if s->be has changed */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2080
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2081 if (!(s->flags & SN_BE_ASSIGNED)) {
2082 /* To ensure correct connection accounting on
2083 * the backend, we count the connection for the
2084 * one managing the queue.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2085 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2086 s->be->beconn++;
2087 if (s->be->beconn > s->be->beconn_max)
2088 s->be->beconn_max = s->be->beconn;
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]2089 proxy_inc_be_ctr(s->be);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2090 s->flags |= SN_BE_ASSIGNED;
2091 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2092
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2093 /*
2094 * Right now, we know that we have processed the entire headers
2095 * and that unwanted requests have been filtered out. We can do
2096 * whatever we want with the remaining request. Also, now we
2097 * may have separate values for ->fe, ->be.
2098 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2099
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2100 /*
2101 * If HTTP PROXY is set we simply get remote server address
2102 * parsing incoming request.
2103 */
2104 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
2105 url2sa(req->data + msg->sl.rq.u, msg->sl.rq.u_l, &s->srv_addr);
2106 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2107
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2108 /*
2109 * 7: the appsession cookie was looked up very early in 1.2,
2110 * so let's do the same now.
2111 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2112
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2113 /* It needs to look into the URI */
2114 if (s->be->appsession_name) {
2115 get_srv_from_appsession(s, &req->data[msg->som], msg->sl.rq.l);
2116 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2117
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2118 /*
2119 * 8: Now we can work with the cookies.
2120 * Note that doing so might move headers in the request, but
2121 * the fields will stay coherent and the URI will not move.
2122 * This should only be performed in the backend.
2123 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]2124 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2125 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
2126 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2127
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2128 /*
2129 * 9: add X-Forwarded-For if either the frontend or the backend
2130 * asks for it.
2131 */
2132 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
2133 if (s->cli_addr.ss_family == AF_INET) {
2134 /* Add an X-Forwarded-For header unless the source IP is
2135 * in the 'except' network range.
2136 */
2137 if ((!s->fe->except_mask.s_addr ||
2138 (((struct sockaddr_in *)&s->cli_addr)->sin_addr.s_addr & s->fe->except_mask.s_addr)
2139 != s->fe->except_net.s_addr) &&
2140 (!s->be->except_mask.s_addr ||
2141 (((struct sockaddr_in *)&s->cli_addr)->sin_addr.s_addr & s->be->except_mask.s_addr)
2142 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2143 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2144 unsigned char *pn;
2145 pn = (unsigned char *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2146
2147 /* Note: we rely on the backend to get the header name to be used for
2148 * x-forwarded-for, because the header is really meant for the backends.
2149 * However, if the backend did not specify any option, we have to rely
2150 * on the frontend's header name.
2151 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2152 if (s->be->fwdfor_hdr_len) {
2153 len = s->be->fwdfor_hdr_len;
2154 memcpy(trash, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2155 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2156 len = s->fe->fwdfor_hdr_len;
2157 memcpy(trash, s->fe->fwdfor_hdr_name, len);
2158 }
2159 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]2160
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2161 if (unlikely(http_header_add_tail2(req, &txn->req,
2162 &txn->hdr_idx, trash, len)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2163 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2164 }
2165 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2166 else if (s->cli_addr.ss_family == AF_INET6) {
2167 /* FIXME: for the sake of completeness, we should also support
2168 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2169 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2170 int len;
2171 char pn[INET6_ADDRSTRLEN];
2172 inet_ntop(AF_INET6,
2173 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
2174 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2175
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2176 /* Note: we rely on the backend to get the header name to be used for
2177 * x-forwarded-for, because the header is really meant for the backends.
2178 * However, if the backend did not specify any option, we have to rely
2179 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2180 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2181 if (s->be->fwdfor_hdr_len) {
2182 len = s->be->fwdfor_hdr_len;
2183 memcpy(trash, s->be->fwdfor_hdr_name, len);
2184 } else {
2185 len = s->fe->fwdfor_hdr_len;
2186 memcpy(trash, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2187 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2188 len += sprintf(trash + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2189
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2190 if (unlikely(http_header_add_tail2(req, &txn->req,
2191 &txn->hdr_idx, trash, len)) < 0)
2192 goto return_bad_req;
2193 }
2194 }
2195
2196 /*
2197 * 10: add "Connection: close" if needed and not yet set.
2198 * Note that we do not need to add it in case of HTTP/1.0.
2199 */
2200 if (!(s->flags & SN_CONN_CLOSED) &&
2201 ((s->fe->options | s->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) {
2202 if ((unlikely(msg->sl.rq.v_l != 8) ||
2203 unlikely(req->data[msg->som + msg->sl.rq.v + 7] != '0')) &&
2204 unlikely(http_header_add_tail2(req, &txn->req, &txn->hdr_idx,
2205 "Connection: close", 17)) < 0)
2206 goto return_bad_req;
2207 s->flags |= SN_CONN_CLOSED;
2208 }
2209 /* Before we switch to data, was assignment set in manage_client_side_cookie?
2210 * If not assigned, perhaps we are balancing on url_param, but this is a
2211 * POST; and the parameters are in the body, maybe scan there to find our server.
2212 * (unless headers overflowed the buffer?)
2213 */
2214 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
2215 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
2216 s->be->url_param_post_limit != 0 && !(req->flags & BF_FULL) &&
2217 memchr(msg->sol + msg->sl.rq.u, '?', msg->sl.rq.u_l) == NULL) {
2218 /* are there enough bytes here? total == l || r || rlim ?
2219 * len is unsigned, but eoh is int,
2220 * how many bytes of body have we received?
2221 * eoh is the first empty line of the header
2222 */
2223 /* already established CRLF or LF at eoh, move to start of message, find message length in buffer */
2224 unsigned long len = req->l - (msg->sol[msg->eoh] == '\r' ? msg->eoh + 2 : msg->eoh + 1);
2225
2226 /* If we have HTTP/1.1 and Expect: 100-continue, then abort.
2227 * We can't assume responsibility for the server's decision,
2228 * on this URI and header set. See rfc2616: 14.20, 8.2.3,
2229 * We also can't change our mind later, about which server to choose, so round robin.
2230 */
2231 if ((likely(msg->sl.rq.v_l == 8) && req->data[msg->som + msg->sl.rq.v + 7] == '1')) {
2232 struct hdr_ctx ctx;
2233 ctx.idx = 0;
2234 /* Expect is allowed in 1.1, look for it */
2235 http_find_header2("Expect", 6, msg->sol, &txn->hdr_idx, &ctx);
2236 if (ctx.idx != 0 &&
2237 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0))
2238 /* We can't reliablly stall and wait for data, because of
2239 * .NET clients that don't conform to rfc2616; so, no need for
2240 * the next block to check length expectations.
2241 * We could send 100 status back to the client, but then we need to
2242 * re-write headers, and send the message. And this isn't the right
2243 * place for that action.
2244 * TODO: support Expect elsewhere and delete this block.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2245 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2246 goto end_check_maybe_wait_for_body;
2247 }
2248
2249 if (likely(len > s->be->url_param_post_limit)) {
2250 /* nothing to do, we got enough */
2251 } else {
2252 /* limit implies we are supposed to need this many bytes
2253 * to find the parameter. Let's see how many bytes we can wait for.
2254 */
2255 long long hint = len;
2256 struct hdr_ctx ctx;
2257 ctx.idx = 0;
2258 http_find_header2("Transfer-Encoding", 17, msg->sol, &txn->hdr_idx, &ctx);
2259 if (ctx.idx && ctx.vlen >= 7 && strncasecmp(ctx.line+ctx.val, "chunked", 7) == 0) {
2260 buffer_write_dis(req);
2261 req->analysers |= AN_REQ_HTTP_BODY;
2262 }
2263 else {
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2264 ctx.idx = 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2265 http_find_header2("Content-Length", 14, msg->sol, &txn->hdr_idx, &ctx);
2266 /* now if we have a length, we'll take the hint */
2267 if (ctx.idx) {
2268 /* We have Content-Length */
2269 if (strl2llrc(ctx.line+ctx.val,ctx.vlen, &hint))
2270 hint = 0; /* parse failure, untrusted client */
2271 else {
2272 if (hint > 0)
2273 msg->hdr_content_len = hint;
2274 else
2275 hint = 0; /* bad client, sent negative length */
2276 }
2277 }
2278 /* but limited to what we care about, maybe we don't expect any entity data (hint == 0) */
2279 if (s->be->url_param_post_limit < hint)
2280 hint = s->be->url_param_post_limit;
2281 /* now do we really need to buffer more data? */
2282 if (len < hint) {
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]2283 buffer_write_dis(req);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2284 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2285 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2286 /* else... There are no body bytes to wait for */
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2287 }
2288 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2289 }
2290 end_check_maybe_wait_for_body:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2291
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2292 /*************************************************************
2293 * OK, that's finished for the headers. We have done what we *
2294 * could. Let's switch to the DATA state. *
2295 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2296
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2297 buffer_set_rlim(req, BUFSIZE); /* no more rewrite needed */
2298 s->logs.tv_request = now;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2299
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2300 /* When a connection is tarpitted, we use the tarpit timeout,
2301 * which may be the same as the connect timeout if unspecified.
2302 * If unset, then set it to zero because we really want it to
2303 * eventually expire. We build the tarpit as an analyser.
2304 */
2305 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]2306 buffer_erase(s->req);
2307 /* wipe the request out so that we can drop the connection early
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2308 * if the client closes first.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2309 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2310 buffer_write_dis(req);
2311 req->analysers |= AN_REQ_HTTP_TARPIT;
2312 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
2313 if (!req->analyse_exp)
2314 req->analyse_exp = now_ms;
2315 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2316
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2317 /* OK let's go on with the BODY now */
2318 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2319
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2320 return_bad_req: /* let's centralize all bad requests */
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]2321 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
2322 /* we detected a parsing error. We want to archive this request
2323 * in the dedicated proxy area for later troubleshooting.
2324 */
2325 struct error_snapshot *es = &s->fe->invalid_req;
2326 int maxlen = MIN(req->r - req->data + msg->som, sizeof(es->buf));
2327 memcpy(es->buf, req->data + msg->som, maxlen);
2328 es->pos = req->lr - req->data + msg->som;
2329 es->len = req->r - req->data + msg->som;
Willy Tarreaudefc52d2009-03-04 20:53:44 +0100[diff] [blame]2330 es->when = date; // user-visible date
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]2331 es->sid = s->uniq_id;
2332 es->srv = s->srv;
2333 es->oe = s->be;
2334 es->src = s->cli_addr;
2335 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2336 txn->req.msg_state = HTTP_MSG_ERROR;
2337 txn->status = 400;
2338 req->analysers = 0;
2339 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
2340 s->fe->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2341
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2342 return_prx_cond:
2343 if (!(s->flags & SN_ERR_MASK))
2344 s->flags |= SN_ERR_PRXCOND;
2345 if (!(s->flags & SN_FINST_MASK))
2346 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2347 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2348}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2349
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2350/* This function is an analyser which processes the HTTP tarpit. It always
2351 * returns zero, at the beginning because it prevents any other processing
2352 * from occurring, and at the end because it terminates the request.
2353 */
2354int http_process_tarpit(struct session *s, struct buffer *req)
2355{
2356 struct http_txn *txn = &s->txn;
2357
2358 /* This connection is being tarpitted. The CLIENT side has
2359 * already set the connect expiration date to the right
2360 * timeout. We just have to check that the client is still
2361 * there and that the timeout has not expired.
2362 */
2363 if ((req->flags & (BF_SHUTR|BF_READ_ERROR)) == 0 &&
2364 !tick_is_expired(req->analyse_exp, now_ms))
2365 return 0;
2366
2367 /* We will set the queue timer to the time spent, just for
2368 * logging purposes. We fake a 500 server error, so that the
2369 * attacker will not suspect his connection has been tarpitted.
2370 * It will not cause trouble to the logs because we can exclude
2371 * the tarpitted connections by filtering on the 'PT' status flags.
2372 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2373 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
2374
2375 txn->status = 500;
2376 if (req->flags != BF_READ_ERROR)
2377 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_500));
2378
2379 req->analysers = 0;
2380 req->analyse_exp = TICK_ETERNITY;
2381
2382 s->fe->failed_req++;
2383 if (!(s->flags & SN_ERR_MASK))
2384 s->flags |= SN_ERR_PRXCOND;
2385 if (!(s->flags & SN_FINST_MASK))
2386 s->flags |= SN_FINST_T;
2387 return 0;
2388}
2389
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2390/* This function is an analyser which processes the HTTP request body. It looks
2391 * for parameters to be used for the load balancing algorithm (url_param). It
2392 * must only be called after the standard HTTP request processing has occurred,
2393 * because it expects the request to be parsed. It returns zero if it needs to
2394 * read more data, or 1 once it has completed its analysis.
2395 */
2396int http_process_request_body(struct session *s, struct buffer *req)
2397{
2398 struct http_msg *msg = &s->txn.req;
2399 unsigned long body = msg->sol[msg->eoh] == '\r' ? msg->eoh + 2 : msg->eoh + 1;
2400 long long limit = s->be->url_param_post_limit;
2401 struct hdr_ctx ctx;
2402
2403 /* We have to parse the HTTP request body to find any required data.
2404 * "balance url_param check_post" should have been the only way to get
2405 * into this. We were brought here after HTTP header analysis, so all
2406 * related structures are ready.
2407 */
2408
2409 ctx.idx = 0;
2410
2411 /* now if we have a length, we'll take the hint */
2412 http_find_header2("Transfer-Encoding", 17, msg->sol, &s->txn.hdr_idx, &ctx);
2413 if (ctx.idx && ctx.vlen >= 7 && strncasecmp(ctx.line+ctx.val, "chunked", 7) == 0) {
2414 unsigned int chunk = 0;
2415 while (body < req->l && !HTTP_IS_CRLF(msg->sol[body])) {
2416 char c = msg->sol[body];
2417 if (ishex(c)) {
2418 unsigned int hex = toupper(c) - '0';
2419 if (hex > 9)
2420 hex -= 'A' - '9' - 1;
2421 chunk = (chunk << 4) | hex;
2422 } else
2423 break;
2424 body++;
2425 }
2426 if (body + 2 >= req->l) /* we want CRLF too */
2427 goto http_body_end; /* end of buffer? data missing! */
2428
2429 if (memcmp(msg->sol+body, "\r\n", 2) != 0)
2430 goto http_body_end; /* chunked encoding len ends with CRLF, and we don't have it yet */
2431
2432 body += 2; // skip CRLF
2433
2434 /* if we support more then one chunk here, we have to do it again when assigning server
2435 * 1. how much entity data do we have? new var
2436 * 2. should save entity_start, entity_cursor, elen & rlen in req; so we don't repeat scanning here
2437 * 3. test if elen > limit, or set new limit to elen if 0 (end of entity found)
2438 */
2439
2440 if (chunk < limit)
2441 limit = chunk; /* only reading one chunk */
2442 } else {
2443 if (msg->hdr_content_len < limit)
2444 limit = msg->hdr_content_len;
2445 }
2446
2447 http_body_end:
2448 /* we leave once we know we have nothing left to do. This means that we have
2449 * enough bytes, or that we know we'll not get any more (buffer full, read
2450 * buffer closed).
2451 */
2452 if (req->l - body >= limit || /* enough bytes! */
2453 req->flags & (BF_FULL | BF_READ_ERROR | BF_SHUTR | BF_READ_TIMEOUT) ||
2454 tick_is_expired(req->analyse_exp, now_ms)) {
2455 /* The situation will not evolve, so let's give up on the analysis. */
2456 s->logs.tv_request = now; /* update the request timer to reflect full request */
2457 req->analysers &= ~AN_REQ_HTTP_BODY;
2458 req->analyse_exp = TICK_ETERNITY;
2459 return 1;
2460 }
2461 else {
2462 /* Not enough data. We'll re-use the http-request
2463 * timeout here. Ideally, we should set the timeout
2464 * relative to the accept() date. We just set the
2465 * request timeout once at the beginning of the
2466 * request.
2467 */
2468 buffer_write_dis(req);
2469 if (!tick_isset(req->analyse_exp))
2470 req->analyse_exp = tick_add_ifset(now_ms, s->fe->timeout.httpreq);
2471 return 0;
2472 }
2473}
2474
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2475/* This function performs all the processing enabled for the current response.
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2476 * It normally returns zero, but may return 1 if it absolutely needs to be
2477 * called again after other functions. It relies on buffers flags, and updates
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2478 * t->rep->analysers. It might make sense to explode it into several other
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2479 * functions. It works like process_request (see indications above).
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2480 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2481int process_response(struct session *t)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2482{
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2483 struct http_txn *txn = &t->txn;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2484 struct buffer *req = t->req;
2485 struct buffer *rep = t->rep;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2486
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2487 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2488 now_ms, __FUNCTION__,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2489 t,
2490 rep,
2491 rep->rex, rep->wex,
2492 rep->flags,
2493 rep->l,
2494 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]2495
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2496 if (rep->analysers & AN_RTR_HTTP_HDR) { /* receiving server headers */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2497 /*
2498 * Now parse the partial (or complete) lines.
2499 * We will check the response syntax, and also join multi-line
2500 * headers. An index of all the lines will be elaborated while
2501 * parsing.
2502 *
2503 * For the parsing, we use a 28 states FSM.
2504 *
2505 * Here is the information we currently have :
Willy Tarreaue393fe22008-08-16 22:18:07 +0200[diff] [blame]2506 * rep->data + rep->som = beginning of response
2507 * rep->data + rep->eoh = end of processed headers / start of current one
2508 * rep->data + rep->eol = end of current header or line (LF or CRLF)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2509 * rep->lr = first non-visited byte
2510 * rep->r = end of data
2511 */
Willy Tarreau7f875f62008-08-11 17:35:01 +0200[diff] [blame]2512
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2513 int cur_idx;
2514 struct http_msg *msg = &txn->rsp;
2515 struct proxy *cur_proxy;
2516
2517 if (likely(rep->lr < rep->r))
2518 http_msg_analyzer(rep, msg, &txn->hdr_idx);
2519
2520 /* 1: we might have to print this header in debug mode */
2521 if (unlikely((global.mode & MODE_DEBUG) &&
2522 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
2523 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
2524 char *eol, *sol;
2525
2526 sol = rep->data + msg->som;
2527 eol = sol + msg->sl.rq.l;
2528 debug_hdr("srvrep", t, sol, eol);
2529
2530 sol += hdr_idx_first_pos(&txn->hdr_idx);
2531 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
2532
2533 while (cur_idx) {
2534 eol = sol + txn->hdr_idx.v[cur_idx].len;
2535 debug_hdr("srvhdr", t, sol, eol);
2536 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2537 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2538 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2539 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2540
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2541 /*
2542 * Now we quickly check if we have found a full valid response.
2543 * If not so, we check the FD and buffer states before leaving.
2544 * A full response is indicated by the fact that we have seen
2545 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
2546 * responses are checked first.
2547 *
2548 * Depending on whether the client is still there or not, we
2549 * may send an error response back or not. Note that normally
2550 * we should only check for HTTP status there, and check I/O
2551 * errors somewhere else.
2552 */
2553
2554 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2555 /* Invalid response */
2556 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]2557 /* we detected a parsing error. We want to archive this response
2558 * in the dedicated proxy area for later troubleshooting.
2559 */
2560 struct error_snapshot *es = &t->be->invalid_rep;
2561 int maxlen = MIN(rep->r - rep->data + msg->som, sizeof(es->buf));
2562 memcpy(es->buf, rep->data + msg->som, maxlen);
2563 es->pos = rep->lr - rep->data + msg->som;
2564 es->len = rep->r - rep->data + msg->som;
Willy Tarreaudefc52d2009-03-04 20:53:44 +0100[diff] [blame]2565 es->when = date; // user-visible date
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]2566 es->sid = t->uniq_id;
2567 es->srv = t->srv;
2568 es->oe = t->fe;
2569 es->src = t->cli_addr;
2570
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2571 hdr_response_bad:
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2572 //buffer_shutr(rep);
2573 //buffer_shutw(req);
2574 //fd_delete(req->cons->fd);
2575 //req->cons->state = SI_ST_CLO;
2576 buffer_shutr_now(rep);
2577 buffer_shutw_now(req);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2578 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2579 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2580 t->srv->failed_resp++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2581 //sess_change_server(t, NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2582 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2583 t->be->failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2584 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2585 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2586 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2587 if (!(t->flags & SN_ERR_MASK))
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2588 t->flags |= SN_ERR_PRXCOND;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2589 if (!(t->flags & SN_FINST_MASK))
2590 t->flags |= SN_FINST_H;
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]2591
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2592 //if (t->srv && may_dequeue_tasks(t->srv, t->be))
2593 // process_srv_queue(t->srv);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2594
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2595 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2596 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2597 /* too large response does not fit in buffer. */
2598 else if (rep->flags & BF_FULL) {
2599 goto hdr_response_bad;
2600 }
2601 /* read error */
2602 else if (rep->flags & BF_READ_ERROR) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2603 buffer_shutr_now(rep);
2604 buffer_shutw_now(req);
2605 //fd_delete(req->cons->fd);
2606 //req->cons->state = SI_ST_CLO;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2607 //if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2608 //t->srv->cur_sess--;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2609 //t->srv->failed_resp++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2610 //sess_change_server(t, NULL);
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2611 //}
2612 //t->be->failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2613 rep->analysers = 0;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2614 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2615 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2616 if (!(t->flags & SN_ERR_MASK))
2617 t->flags |= SN_ERR_SRVCL;
2618 if (!(t->flags & SN_FINST_MASK))
2619 t->flags |= SN_FINST_H;
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]2620
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2621 //if (t->srv && may_dequeue_tasks(t->srv, t->be))
2622 // process_srv_queue(t->srv);
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2623
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2624 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2625 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2626 /* read timeout : return a 504 to the client. */
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2627 else if (rep->flags & BF_READ_TIMEOUT) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2628 buffer_shutr_now(rep);
2629 buffer_shutw_now(req);
2630 //fd_delete(req->cons->fd);
2631 //req->cons->state = SI_ST_CLO;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2632 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2633 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2634 t->srv->failed_resp++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2635 //sess_change_server(t, NULL);
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2636 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2637 t->be->failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2638 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2639 txn->status = 504;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2640 stream_int_return(rep->cons, error_message(t, HTTP_ERR_504));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2641 if (!(t->flags & SN_ERR_MASK))
2642 t->flags |= SN_ERR_SRVTO;
2643 if (!(t->flags & SN_FINST_MASK))
2644 t->flags |= SN_FINST_H;
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]2645
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2646 //if (t->srv && may_dequeue_tasks(t->srv, t->be))
2647 // process_srv_queue(t->srv);
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2648 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2649 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2650 /* write error to client, or close from server */
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]2651 else if (rep->flags & (BF_WRITE_ERROR|BF_SHUTR)) {
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2652 buffer_shutr_now(rep);
2653 buffer_shutw_now(req);
2654 //fd_delete(req->cons->fd);
2655 //req->cons->state = SI_ST_CLO;
2656 if (t->srv) {
2657 //t->srv->cur_sess--;
2658 t->srv->failed_resp++;
2659 //sess_change_server(t, NULL);
2660 }
2661 t->be->failed_resp++;
2662 rep->analysers = 0;
2663 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2664 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2665 if (!(t->flags & SN_ERR_MASK))
2666 t->flags |= SN_ERR_SRVCL;
2667 if (!(t->flags & SN_FINST_MASK))
2668 t->flags |= SN_FINST_H;
2669
2670 //if (t->srv && may_dequeue_tasks(t->srv, t->be))
2671 // process_srv_queue(t->srv);
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2672
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2673 return 0;
2674 }
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]2675 buffer_write_dis(rep);
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2676 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2677 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2678
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2679
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2680 /*****************************************************************
2681 * More interesting part now : we know that we have a complete *
2682 * response which at least looks like HTTP. We have an indicator *
2683 * of each header's length, so we can parse them quickly. *
2684 ****************************************************************/
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2685
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2686 rep->analysers &= ~AN_RTR_HTTP_HDR;
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]2687
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2688 /* ensure we keep this pointer to the beginning of the message */
2689 msg->sol = rep->data + msg->som;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2690
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2691 /*
2692 * 1: get the status code and check for cacheability.
2693 */
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2694
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2695 t->logs.logwait &= ~LW_RESP;
2696 txn->status = strl2ui(rep->data + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2697
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2698 switch (txn->status) {
2699 case 200:
2700 case 203:
2701 case 206:
2702 case 300:
2703 case 301:
2704 case 410:
2705 /* RFC2616 @13.4:
2706 * "A response received with a status code of
2707 * 200, 203, 206, 300, 301 or 410 MAY be stored
2708 * by a cache (...) unless a cache-control
2709 * directive prohibits caching."
2710 *
2711 * RFC2616 @9.5: POST method :
2712 * "Responses to this method are not cacheable,
2713 * unless the response includes appropriate
2714 * Cache-Control or Expires header fields."
2715 */
2716 if (likely(txn->meth != HTTP_METH_POST) &&
2717 (t->be->options & (PR_O_CHK_CACHE|PR_O_COOK_NOC)))
2718 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
2719 break;
2720 default:
2721 break;
2722 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2723
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2724 /*
2725 * 2: we may need to capture headers
2726 */
2727 if (unlikely((t->logs.logwait & LW_RSPHDR) && t->fe->rsp_cap))
2728 capture_headers(rep->data + msg->som, &txn->hdr_idx,
2729 txn->rsp.cap, t->fe->rsp_cap);
2730
2731 /*
2732 * 3: we will have to evaluate the filters.
2733 * As opposed to version 1.2, now they will be evaluated in the
2734 * filters order and not in the header order. This means that
2735 * each filter has to be validated among all headers.
2736 *
2737 * Filters are tried with ->be first, then with ->fe if it is
2738 * different from ->be.
2739 */
2740
2741 t->flags &= ~SN_CONN_CLOSED; /* prepare for inspection */
2742
2743 cur_proxy = t->be;
2744 while (1) {
2745 struct proxy *rule_set = cur_proxy;
2746
2747 /* try headers filters */
2748 if (rule_set->rsp_exp != NULL) {
2749 if (apply_filters_to_response(t, rep, rule_set->rsp_exp) < 0) {
2750 return_bad_resp:
2751 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2752 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2753 t->srv->failed_resp++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2754 //sess_change_server(t, NULL);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2755 }
2756 cur_proxy->failed_resp++;
2757 return_srv_prx_502:
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2758 buffer_shutr_now(rep);
2759 buffer_shutw_now(req);
2760 //fd_delete(req->cons->fd);
2761 //req->cons->state = SI_ST_CLO;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2762 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2763 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2764 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2765 if (!(t->flags & SN_ERR_MASK))
2766 t->flags |= SN_ERR_PRXCOND;
2767 if (!(t->flags & SN_FINST_MASK))
2768 t->flags |= SN_FINST_H;
2769 /* We used to have a free connection slot. Since we'll never use it,
2770 * we have to inform the server that it may be used by another session.
2771 */
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2772 //if (t->srv && may_dequeue_tasks(t->srv, cur_proxy))
2773 // process_srv_queue(t->srv);
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2774 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2775 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2776 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2777
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2778 /* has the response been denied ? */
2779 if (txn->flags & TX_SVDENY) {
Willy Tarreauf899b942008-03-28 18:09:38 +0100[diff] [blame]2780 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2781 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2782 t->srv->failed_secu++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2783 //sess_change_server(t, NULL);
Willy Tarreauf899b942008-03-28 18:09:38 +0100[diff] [blame]2784 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2785 cur_proxy->denied_resp++;
2786 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]2787 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2788
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2789 /* We might have to check for "Connection:" */
2790 if (((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
2791 !(t->flags & SN_CONN_CLOSED)) {
2792 char *cur_ptr, *cur_end, *cur_next;
2793 int cur_idx, old_idx, delta, val;
2794 struct hdr_idx_elem *cur_hdr;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2795
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2796 cur_next = rep->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
2797 old_idx = 0;
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]2798
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2799 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
2800 cur_hdr = &txn->hdr_idx.v[cur_idx];
2801 cur_ptr = cur_next;
2802 cur_end = cur_ptr + cur_hdr->len;
2803 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2804
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2805 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
2806 if (val) {
2807 /* 3 possibilities :
2808 * - we have already set Connection: close,
2809 * so we remove this line.
2810 * - we have not yet set Connection: close,
2811 * but this line indicates close. We leave
2812 * it untouched and set the flag.
2813 * - we have not yet set Connection: close,
2814 * and this line indicates non-close. We
2815 * replace it.
2816 */
2817 if (t->flags & SN_CONN_CLOSED) {
2818 delta = buffer_replace2(rep, cur_ptr, cur_next, NULL, 0);
2819 txn->rsp.eoh += delta;
2820 cur_next += delta;
2821 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
2822 txn->hdr_idx.used--;
2823 cur_hdr->len = 0;
2824 } else {
2825 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
2826 delta = buffer_replace2(rep, cur_ptr + val, cur_end,
2827 "close", 5);
2828 cur_next += delta;
2829 cur_hdr->len += delta;
2830 txn->rsp.eoh += delta;
2831 }
2832 t->flags |= SN_CONN_CLOSED;
2833 }
2834 }
2835 old_idx = cur_idx;
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]2836 }
2837 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2838
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2839 /* add response headers from the rule sets in the same order */
2840 for (cur_idx = 0; cur_idx < rule_set->nb_rspadd; cur_idx++) {
2841 if (unlikely(http_header_add_tail(rep, &txn->rsp, &txn->hdr_idx,
2842 rule_set->rsp_add[cur_idx])) < 0)
2843 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2844 }
2845
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2846 /* check whether we're already working on the frontend */
2847 if (cur_proxy == t->fe)
2848 break;
2849 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2850 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2851
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2852 /*
2853 * 4: check for server cookie.
2854 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]2855 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2856 || (t->be->options & PR_O_CHK_CACHE))
2857 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2858
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2859
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2860 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2861 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2862 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2863 if ((t->be->options & (PR_O_COOK_NOC | PR_O_CHK_CACHE)) != 0)
2864 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2865
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2866 /*
2867 * 6: add server cookie in the response if needed
2868 */
2869 if ((t->srv) && !(t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_INS) &&
2870 (!(t->be->options & PR_O_COOK_POST) || (txn->meth == HTTP_METH_POST))) {
2871 int len;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2872
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2873 /* the server is known, it's not the one the client requested, we have to
2874 * insert a set-cookie here, except if we want to insert only on POST
2875 * requests and this one isn't. Note that servers which don't have cookies
2876 * (eg: some backup servers) will return a full cookie removal request.
2877 */
2878 len = sprintf(trash, "Set-Cookie: %s=%s; path=/",
2879 t->be->cookie_name,
2880 t->srv->cookie ? t->srv->cookie : "; Expires=Thu, 01-Jan-1970 00:00:01 GMT");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2881
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2882 if (t->be->cookie_domain)
2883 len += sprintf(trash+len, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2884
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2885 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
2886 trash, len)) < 0)
2887 goto return_bad_resp;
2888 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2889
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2890 /* Here, we will tell an eventual cache on the client side that we don't
2891 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
2892 * Some caches understand the correct form: 'no-cache="set-cookie"', but
2893 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
2894 */
2895 if ((t->be->options & PR_O_COOK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2896
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2897 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
2898
2899 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
2900 "Cache-control: private", 22)) < 0)
2901 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2902 }
2903 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2904
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2905
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2906 /*
2907 * 7: check if result will be cacheable with a cookie.
2908 * We'll block the response if security checks have caught
2909 * nasty things such as a cacheable cookie.
2910 */
2911 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) ==
2912 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) &&
2913 (t->be->options & PR_O_CHK_CACHE)) {
2914
2915 /* we're in presence of a cacheable response containing
2916 * a set-cookie header. We'll block it as requested by
2917 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2918 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2919 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2920 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2921 t->srv->failed_secu++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2922 //sess_change_server(t, NULL);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2923 }
2924 t->be->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2925
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2926 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
2927 t->be->id, t->srv?t->srv->id:"<dispatch>");
2928 send_log(t->be, LOG_ALERT,
2929 "Blocking cacheable cookie in response from instance %s, server %s.\n",
2930 t->be->id, t->srv?t->srv->id:"<dispatch>");
2931 goto return_srv_prx_502;
2932 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2933
2934 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2935 * 8: add "Connection: close" if needed and not yet set.
2936 * Note that we do not need to add it in case of HTTP/1.0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2937 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2938 if (!(t->flags & SN_CONN_CLOSED) &&
2939 ((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) {
2940 if ((unlikely(msg->sl.st.v_l != 8) ||
2941 unlikely(req->data[msg->som + 7] != '0')) &&
2942 unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
2943 "Connection: close", 17)) < 0)
2944 goto return_bad_resp;
2945 t->flags |= SN_CONN_CLOSED;
2946 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2947
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2948 /*************************************************************
2949 * OK, that's finished for the headers. We have done what we *
2950 * could. Let's switch to the DATA state. *
2951 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2952
Willy Tarreaue393fe22008-08-16 22:18:07 +0200[diff] [blame]2953 buffer_set_rlim(rep, BUFSIZE); /* no more rewrite needed */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2954 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2955
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2956#ifdef CONFIG_HAP_TCPSPLICE
2957 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
2958 /* TCP splicing supported by both FE and BE */
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2959 tcp_splice_splicefd(rep->cons->fd, rep->prod->fd, 0);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2960 }
2961#endif
2962 /* if the user wants to log as soon as possible, without counting
2963 * bytes from the server, then this is the right moment. We have
2964 * to temporarily assign bytes_out to log what we currently have.
2965 */
2966 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
2967 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
2968 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2969 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2970 t->logs.bytes_out = 0;
2971 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2972
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2973 /* Note: we must not try to cheat by jumping directly to DATA,
2974 * otherwise we would not let the client side wake up.
2975 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2976
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2977 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2978 }
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2979
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2980 /* Note: eventhough nobody should set an unknown flag, clearing them right now will
2981 * probably reduce one day's debugging session.
2982 */
2983#ifdef DEBUG_DEV
2984 if (rep->analysers & ~(AN_RTR_HTTP_HDR)) {
2985 fprintf(stderr, "FIXME !!!! unknown analysers flags %s:%d = 0x%08X\n",
2986 __FILE__, __LINE__, rep->analysers);
2987 ABORT_NOW();
2988 }
2989#endif
2990 rep->analysers &= AN_RTR_HTTP_HDR;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2991 return 0;
2992}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2993
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2994/*
2995 * Produces data for the session <s> depending on its source. Expects to be
Willy Tarreau1ae3a052008-08-16 10:56:30 +0200[diff] [blame]2996 * called with client socket shut down on input. Right now, only statistics can
Willy Tarreau72b179a2008-08-28 16:01:32 +0200[diff] [blame]2997 * be produced. It stops by itself by unsetting the BF_HIJACK flag from the
2998 * buffer, which it uses to keep on being called when there is free space in
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]2999 * the buffer, or simply by letting an empty buffer upon return.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3000 */
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3001void produce_content(struct session *s, struct buffer *rep)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3002{
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3003 if (s->data_source == DATA_SRC_NONE) {
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3004 buffer_stop_hijack(rep);
3005 return;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3006 }
3007 else if (s->data_source == DATA_SRC_STATS) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3008 /* dump server statistics */
Willy Tarreau0a464892008-12-07 18:30:00 +0100[diff] [blame]3009 int ret = stats_dump_http(s, rep, s->be->uri_auth);
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3010 if (ret >= 0)
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3011 return;
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3012 /* -1 indicates an error */
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3013 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3014
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3015 /* unknown data source or internal error */
3016 s->txn.status = 500;
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3017 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_500));
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3018 if (!(s->flags & SN_ERR_MASK))
3019 s->flags |= SN_ERR_PRXCOND;
3020 if (!(s->flags & SN_FINST_MASK))
3021 s->flags |= SN_FINST_R;
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3022 buffer_stop_hijack(rep);
3023 return;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3024}
3025
3026
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3027/* Iterate the same filter through all request headers.
3028 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3029 * Since it can manage the switch to another backend, it updates the per-proxy
3030 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3031 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3032int apply_filter_to_req_headers(struct session *t, struct buffer *req, struct hdr_exp *exp)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3033{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3034 char term;
3035 char *cur_ptr, *cur_end, *cur_next;
3036 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3037 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3038 struct hdr_idx_elem *cur_hdr;
3039 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]3040
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3041 last_hdr = 0;
3042
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3043 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3044 old_idx = 0;
3045
3046 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3047 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3048 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3049 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3050 (exp->action == ACT_ALLOW ||
3051 exp->action == ACT_DENY ||
3052 exp->action == ACT_TARPIT))
3053 return 0;
3054
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3055 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3056 if (!cur_idx)
3057 break;
3058
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3059 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3060 cur_ptr = cur_next;
3061 cur_end = cur_ptr + cur_hdr->len;
3062 cur_next = cur_end + cur_hdr->cr + 1;
3063
3064 /* Now we have one header between cur_ptr and cur_end,
3065 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3066 */
3067
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3068 /* The annoying part is that pattern matching needs
3069 * that we modify the contents to null-terminate all
3070 * strings before testing them.
3071 */
3072
3073 term = *cur_end;
3074 *cur_end = '\0';
3075
3076 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3077 switch (exp->action) {
3078 case ACT_SETBE:
3079 /* It is not possible to jump a second time.
3080 * FIXME: should we return an HTTP/500 here so that
3081 * the admin knows there's a problem ?
3082 */
3083 if (t->be != t->fe)
3084 break;
3085
3086 /* Swithing Proxy */
3087 t->be = (struct proxy *) exp->replace;
3088
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3089 /* right now, the backend switch is not overly complicated
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3090 * because we have associated req_cap and rsp_cap to the
3091 * frontend, and the beconn will be updated later.
3092 */
3093
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3094 t->rep->rto = t->req->wto = t->be->timeout.server;
3095 t->req->cto = t->be->timeout.connect;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3096 t->conn_retries = t->be->conn_retries;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3097 last_hdr = 1;
3098 break;
3099
3100 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3101 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3102 last_hdr = 1;
3103 break;
3104
3105 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3106 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3107 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3108 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3109 break;
3110
3111 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3112 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3113 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3114 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3115 break;
3116
3117 case ACT_REPLACE:
3118 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3119 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3120 /* FIXME: if the user adds a newline in the replacement, the
3121 * index will not be recalculated for now, and the new line
3122 * will not be counted as a new header.
3123 */
3124
3125 cur_end += delta;
3126 cur_next += delta;
3127 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3128 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3129 break;
3130
3131 case ACT_REMOVE:
3132 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
3133 cur_next += delta;
3134
3135 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3136 txn->req.eoh += delta;
3137 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3138 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3139 cur_hdr->len = 0;
3140 cur_end = NULL; /* null-term has been rewritten */
3141 break;
3142
3143 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3144 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3145 if (cur_end)
3146 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3147
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3148 /* keep the link from this header to next one in case of later
3149 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3150 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3151 old_idx = cur_idx;
3152 }
3153 return 0;
3154}
3155
3156
3157/* Apply the filter to the request line.
3158 * Returns 0 if nothing has been done, 1 if the filter has been applied,
3159 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3160 * Since it can manage the switch to another backend, it updates the per-proxy
3161 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3162 */
3163int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
3164{
3165 char term;
3166 char *cur_ptr, *cur_end;
3167 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3168 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3169 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3170
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3171
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3172 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3173 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3174 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3175 (exp->action == ACT_ALLOW ||
3176 exp->action == ACT_DENY ||
3177 exp->action == ACT_TARPIT))
3178 return 0;
3179 else if (exp->action == ACT_REMOVE)
3180 return 0;
3181
3182 done = 0;
3183
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3184 cur_ptr = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3185 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3186
3187 /* Now we have the request line between cur_ptr and cur_end */
3188
3189 /* The annoying part is that pattern matching needs
3190 * that we modify the contents to null-terminate all
3191 * strings before testing them.
3192 */
3193
3194 term = *cur_end;
3195 *cur_end = '\0';
3196
3197 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3198 switch (exp->action) {
3199 case ACT_SETBE:
3200 /* It is not possible to jump a second time.
3201 * FIXME: should we return an HTTP/500 here so that
3202 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3203 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3204 if (t->be != t->fe)
3205 break;
3206
3207 /* Swithing Proxy */
3208 t->be = (struct proxy *) exp->replace;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3209
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3210 /* right now, the backend switch is not too much complicated
3211 * because we have associated req_cap and rsp_cap to the
3212 * frontend, and the beconn will be updated later.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3213 */
3214
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3215 t->rep->rto = t->req->wto = t->be->timeout.server;
3216 t->req->cto = t->be->timeout.connect;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3217 t->conn_retries = t->be->conn_retries;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3218 done = 1;
3219 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3220
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3221 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3222 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3223 done = 1;
3224 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3225
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3226 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3227 txn->flags |= TX_CLDENY;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3228 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3229 done = 1;
3230 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3231
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3232 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3233 txn->flags |= TX_CLTARPIT;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3234 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3235 done = 1;
3236 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3237
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3238 case ACT_REPLACE:
3239 *cur_end = term; /* restore the string terminator */
3240 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3241 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3242 /* FIXME: if the user adds a newline in the replacement, the
3243 * index will not be recalculated for now, and the new line
3244 * will not be counted as a new header.
3245 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3246
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3247 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3248 cur_end += delta;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3249
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3250 txn->req.sol = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3251 cur_end = (char *)http_parse_reqline(&txn->req, req->data,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3252 HTTP_MSG_RQMETH,
3253 cur_ptr, cur_end + 1,
3254 NULL, NULL);
3255 if (unlikely(!cur_end))
3256 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3257
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3258 /* we have a full request and we know that we have either a CR
3259 * or an LF at <ptr>.
3260 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3261 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
3262 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]3263 /* there is no point trying this regex on headers */
3264 return 1;
3265 }
3266 }
3267 *cur_end = term; /* restore the string terminator */
3268 return done;
3269}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]3270
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3271
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3272
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3273/*
3274 * Apply all the req filters <exp> to all headers in buffer <req> of session <t>.
3275 * 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]3276 * unparsable request. Since it can manage the switch to another backend, it
3277 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3278 */
3279int apply_filters_to_request(struct session *t, struct buffer *req, struct hdr_exp *exp)
3280{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3281 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3282 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3283 while (exp && !(txn->flags & (TX_CLDENY|TX_CLTARPIT))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3284 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3285
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3286 /*
3287 * The interleaving of transformations and verdicts
3288 * makes it difficult to decide to continue or stop
3289 * the evaluation.
3290 */
3291
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3292 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3293 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
3294 exp->action == ACT_TARPIT || exp->action == ACT_PASS)) {
3295 exp = exp->next;
3296 continue;
3297 }
3298
3299 /* Apply the filter to the request line. */
3300 ret = apply_filter_to_req_line(t, req, exp);
3301 if (unlikely(ret < 0))
3302 return -1;
3303
3304 if (likely(ret == 0)) {
3305 /* The filter did not match the request, it can be
3306 * iterated through all headers.
3307 */
3308 apply_filter_to_req_headers(t, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3309 }
3310 exp = exp->next;
3311 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3312 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3313}
3314
3315
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3316
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3317/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3318 * Manage client-side cookie. It can impact performance by about 2% so it is
3319 * desirable to call it only when needed.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3320 */
3321void manage_client_side_cookies(struct session *t, struct buffer *req)
3322{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3323 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3324 char *p1, *p2, *p3, *p4;
3325 char *del_colon, *del_cookie, *colon;
3326 int app_cookies;
3327
3328 appsess *asession_temp = NULL;
3329 appsess local_asession;
3330
3331 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3332 int cur_idx, old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3333
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3334 /* Iterate through the headers.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3335 * we start with the start line.
3336 */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]3337 old_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3338 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3339
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3340 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3341 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3342 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3343
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3344 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3345 cur_ptr = cur_next;
3346 cur_end = cur_ptr + cur_hdr->len;
3347 cur_next = cur_end + cur_hdr->cr + 1;
3348
3349 /* We have one full header between cur_ptr and cur_end, and the
3350 * next header starts at cur_next. We're only interested in
3351 * "Cookie:" headers.
3352 */
3353
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3354 val = http_header_match2(cur_ptr, cur_end, "Cookie", 6);
3355 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3356 old_idx = cur_idx;
3357 continue;
3358 }
3359
3360 /* Now look for cookies. Conforming to RFC2109, we have to support
3361 * attributes whose name begin with a '$', and associate them with
3362 * the right cookie, if we want to delete this cookie.
3363 * So there are 3 cases for each cookie read :
3364 * 1) it's a special attribute, beginning with a '$' : ignore it.
3365 * 2) it's a server id cookie that we *MAY* want to delete : save
3366 * some pointers on it (last semi-colon, beginning of cookie...)
3367 * 3) it's an application cookie : we *MAY* have to delete a previous
3368 * "special" cookie.
3369 * At the end of loop, if a "special" cookie remains, we may have to
3370 * remove it. If no application cookie persists in the header, we
3371 * *MUST* delete it
3372 */
3373
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3374 colon = p1 = cur_ptr + val; /* first non-space char after 'Cookie:' */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3375
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3376 /* del_cookie == NULL => nothing to be deleted */
3377 del_colon = del_cookie = NULL;
3378 app_cookies = 0;
3379
3380 while (p1 < cur_end) {
3381 /* skip spaces and colons, but keep an eye on these ones */
3382 while (p1 < cur_end) {
3383 if (*p1 == ';' || *p1 == ',')
3384 colon = p1;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3385 else if (!isspace((unsigned char)*p1))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3386 break;
3387 p1++;
3388 }
3389
3390 if (p1 == cur_end)
3391 break;
3392
3393 /* p1 is at the beginning of the cookie name */
3394 p2 = p1;
3395 while (p2 < cur_end && *p2 != '=')
3396 p2++;
3397
3398 if (p2 == cur_end)
3399 break;
3400
3401 p3 = p2 + 1; /* skips the '=' sign */
3402 if (p3 == cur_end)
3403 break;
3404
3405 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3406 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';' && *p4 != ',')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3407 p4++;
3408
3409 /* here, we have the cookie name between p1 and p2,
3410 * and its value between p3 and p4.
3411 * we can process it :
3412 *
3413 * Cookie: NAME=VALUE;
3414 * | || || |
3415 * | || || +--> p4
3416 * | || |+-------> p3
3417 * | || +--------> p2
3418 * | |+------------> p1
3419 * | +-------------> colon
3420 * +--------------------> cur_ptr
3421 */
3422
3423 if (*p1 == '$') {
3424 /* skip this one */
3425 }
3426 else {
3427 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3428 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3429 txn->cli_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3430 (p4 - p1 >= t->fe->capture_namelen) &&
3431 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3432 int log_len = p4 - p1;
3433
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]3434 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3435 Alert("HTTP logging : out of memory.\n");
3436 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3437 if (log_len > t->fe->capture_len)
3438 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3439 memcpy(txn->cli_cookie, p1, log_len);
3440 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3441 }
3442 }
3443
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3444 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
3445 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3446 /* Cool... it's the right one */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3447 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3448 char *delim;
3449
3450 /* if we're in cookie prefix mode, we'll search the delimitor so that we
3451 * have the server ID betweek p3 and delim, and the original cookie between
3452 * delim+1 and p4. Otherwise, delim==p4 :
3453 *
3454 * Cookie: NAME=SRV~VALUE;
3455 * | || || | |
3456 * | || || | +--> p4
3457 * | || || +--------> delim
3458 * | || |+-----------> p3
3459 * | || +------------> p2
3460 * | |+----------------> p1
3461 * | +-----------------> colon
3462 * +------------------------> cur_ptr
3463 */
3464
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3465 if (t->be->options & PR_O_COOK_PFX) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3466 for (delim = p3; delim < p4; delim++)
3467 if (*delim == COOKIE_DELIM)
3468 break;
3469 }
3470 else
3471 delim = p4;
3472
3473
3474 /* Here, we'll look for the first running server which supports the cookie.
3475 * This allows to share a same cookie between several servers, for example
3476 * to dedicate backup servers to specific servers only.
3477 * However, to prevent clients from sticking to cookie-less backup server
3478 * when they have incidentely learned an empty cookie, we simply ignore
3479 * empty cookies and mark them as invalid.
3480 */
3481 if (delim == p3)
3482 srv = NULL;
3483
3484 while (srv) {
Willy Tarreau92f2ab12007-02-02 22:14:47 +0100[diff] [blame]3485 if (srv->cookie && (srv->cklen == delim - p3) &&
3486 !memcmp(p3, srv->cookie, delim - p3)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3487 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3488 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3489 txn->flags &= ~TX_CK_MASK;
3490 txn->flags |= TX_CK_VALID;
3491 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3492 t->srv = srv;
3493 break;
3494 } else {
3495 /* we found a server, but it's down */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3496 txn->flags &= ~TX_CK_MASK;
3497 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3498 }
3499 }
3500 srv = srv->next;
3501 }
3502
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3503 if (!srv && !(txn->flags & TX_CK_DOWN)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3504 /* no server matched this cookie */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3505 txn->flags &= ~TX_CK_MASK;
3506 txn->flags |= TX_CK_INVALID;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3507 }
3508
3509 /* depending on the cookie mode, we may have to either :
3510 * - delete the complete cookie if we're in insert+indirect mode, so that
3511 * the server never sees it ;
3512 * - remove the server id from the cookie value, and tag the cookie as an
3513 * application cookie so that it does not get accidentely removed later,
3514 * if we're in cookie prefix mode
3515 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3516 if ((t->be->options & PR_O_COOK_PFX) && (delim != p4)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3517 int delta; /* negative */
3518
3519 delta = buffer_replace2(req, p3, delim + 1, NULL, 0);
3520 p4 += delta;
3521 cur_end += delta;
3522 cur_next += delta;
3523 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3524 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3525
3526 del_cookie = del_colon = NULL;
3527 app_cookies++; /* protect the header from deletion */
3528 }
3529 else if (del_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3530 (t->be->options & (PR_O_COOK_INS | PR_O_COOK_IND)) == (PR_O_COOK_INS | PR_O_COOK_IND)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3531 del_cookie = p1;
3532 del_colon = colon;
3533 }
3534 } else {
3535 /* now we know that we must keep this cookie since it's
3536 * not ours. But if we wanted to delete our cookie
3537 * earlier, we cannot remove the complete header, but we
3538 * can remove the previous block itself.
3539 */
3540 app_cookies++;
3541
3542 if (del_cookie != NULL) {
3543 int delta; /* negative */
3544
3545 delta = buffer_replace2(req, del_cookie, p1, NULL, 0);
3546 p4 += delta;
3547 cur_end += delta;
3548 cur_next += delta;
3549 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3550 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3551 del_cookie = del_colon = NULL;
3552 }
3553 }
3554
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3555 if ((t->be->appsession_name != NULL) &&
3556 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3557 /* first, let's see if the cookie is our appcookie*/
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3558
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3559 /* Cool... it's the right one */
3560
3561 asession_temp = &local_asession;
3562
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3563 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3564 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
3565 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
3566 return;
3567 }
3568
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3569 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
3570 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3571 asession_temp->serverid = NULL;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3572
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3573 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3574 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
3575 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3576 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3577 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3578 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3579 Alert("Not enough memory process_cli():asession:calloc().\n");
3580 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
3581 return;
3582 }
3583
3584 asession_temp->sessid = local_asession.sessid;
3585 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3586 asession_temp->request_count = 0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3587 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3588 } else {
3589 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3590 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3591 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3592 if (asession_temp->serverid == NULL) {
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3593 /* TODO redispatch request */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3594 Alert("Found Application Session without matching server.\n");
3595 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3596 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3597 while (srv) {
3598 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3599 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3600 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3601 txn->flags &= ~TX_CK_MASK;
3602 txn->flags |= TX_CK_VALID;
3603 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3604 t->srv = srv;
3605 break;
3606 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3607 txn->flags &= ~TX_CK_MASK;
3608 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3609 }
3610 }
3611 srv = srv->next;
3612 }/* end while(srv) */
3613 }/* end else if server == NULL */
3614
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]3615 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3616 asession_temp->request_count++;
3617#if defined(DEBUG_HASH)
3618 Alert("manage_client_side_cookies\n");
3619 appsession_hash_dump(&(t->be->htbl_proxy));
3620#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3621 }/* end if ((t->proxy->appsession_name != NULL) ... */
3622 }
3623
3624 /* we'll have to look for another cookie ... */
3625 p1 = p4;
3626 } /* while (p1 < cur_end) */
3627
3628 /* There's no more cookie on this line.
3629 * We may have marked the last one(s) for deletion.
3630 * We must do this now in two ways :
3631 * - if there is no app cookie, we simply delete the header ;
3632 * - if there are app cookies, we must delete the end of the
3633 * string properly, including the colon/semi-colon before
3634 * the cookie name.
3635 */
3636 if (del_cookie != NULL) {
3637 int delta;
3638 if (app_cookies) {
3639 delta = buffer_replace2(req, del_colon, cur_end, NULL, 0);
3640 cur_end = del_colon;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3641 cur_hdr->len += delta;
3642 } else {
3643 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3644
3645 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3646 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3647 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3648 cur_hdr->len = 0;
3649 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]3650 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3651 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3652 }
3653
3654 /* keep the link from this header to next one */
3655 old_idx = cur_idx;
3656 } /* end of cookie processing on this header */
3657}
3658
3659
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3660/* Iterate the same filter through all response headers contained in <rtr>.
3661 * Returns 1 if this filter can be stopped upon return, otherwise 0.
3662 */
3663int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
3664{
3665 char term;
3666 char *cur_ptr, *cur_end, *cur_next;
3667 int cur_idx, old_idx, last_hdr;
3668 struct http_txn *txn = &t->txn;
3669 struct hdr_idx_elem *cur_hdr;
3670 int len, delta;
3671
3672 last_hdr = 0;
3673
3674 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
3675 old_idx = 0;
3676
3677 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3678 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3679 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3680 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3681 (exp->action == ACT_ALLOW ||
3682 exp->action == ACT_DENY))
3683 return 0;
3684
3685 cur_idx = txn->hdr_idx.v[old_idx].next;
3686 if (!cur_idx)
3687 break;
3688
3689 cur_hdr = &txn->hdr_idx.v[cur_idx];
3690 cur_ptr = cur_next;
3691 cur_end = cur_ptr + cur_hdr->len;
3692 cur_next = cur_end + cur_hdr->cr + 1;
3693
3694 /* Now we have one header between cur_ptr and cur_end,
3695 * and the next header starts at cur_next.
3696 */
3697
3698 /* The annoying part is that pattern matching needs
3699 * that we modify the contents to null-terminate all
3700 * strings before testing them.
3701 */
3702
3703 term = *cur_end;
3704 *cur_end = '\0';
3705
3706 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3707 switch (exp->action) {
3708 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3709 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3710 last_hdr = 1;
3711 break;
3712
3713 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3714 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3715 last_hdr = 1;
3716 break;
3717
3718 case ACT_REPLACE:
3719 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3720 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
3721 /* FIXME: if the user adds a newline in the replacement, the
3722 * index will not be recalculated for now, and the new line
3723 * will not be counted as a new header.
3724 */
3725
3726 cur_end += delta;
3727 cur_next += delta;
3728 cur_hdr->len += delta;
3729 txn->rsp.eoh += delta;
3730 break;
3731
3732 case ACT_REMOVE:
3733 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
3734 cur_next += delta;
3735
3736 /* FIXME: this should be a separate function */
3737 txn->rsp.eoh += delta;
3738 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3739 txn->hdr_idx.used--;
3740 cur_hdr->len = 0;
3741 cur_end = NULL; /* null-term has been rewritten */
3742 break;
3743
3744 }
3745 }
3746 if (cur_end)
3747 *cur_end = term; /* restore the string terminator */
3748
3749 /* keep the link from this header to next one in case of later
3750 * removal of next header.
3751 */
3752 old_idx = cur_idx;
3753 }
3754 return 0;
3755}
3756
3757
3758/* Apply the filter to the status line in the response buffer <rtr>.
3759 * Returns 0 if nothing has been done, 1 if the filter has been applied,
3760 * or -1 if a replacement resulted in an invalid status line.
3761 */
3762int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
3763{
3764 char term;
3765 char *cur_ptr, *cur_end;
3766 int done;
3767 struct http_txn *txn = &t->txn;
3768 int len, delta;
3769
3770
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3771 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3772 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3773 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3774 (exp->action == ACT_ALLOW ||
3775 exp->action == ACT_DENY))
3776 return 0;
3777 else if (exp->action == ACT_REMOVE)
3778 return 0;
3779
3780 done = 0;
3781
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3782 cur_ptr = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3783 cur_end = cur_ptr + txn->rsp.sl.rq.l;
3784
3785 /* Now we have the status line between cur_ptr and cur_end */
3786
3787 /* The annoying part is that pattern matching needs
3788 * that we modify the contents to null-terminate all
3789 * strings before testing them.
3790 */
3791
3792 term = *cur_end;
3793 *cur_end = '\0';
3794
3795 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3796 switch (exp->action) {
3797 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3798 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3799 done = 1;
3800 break;
3801
3802 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3803 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3804 done = 1;
3805 break;
3806
3807 case ACT_REPLACE:
3808 *cur_end = term; /* restore the string terminator */
3809 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3810 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
3811 /* FIXME: if the user adds a newline in the replacement, the
3812 * index will not be recalculated for now, and the new line
3813 * will not be counted as a new header.
3814 */
3815
3816 txn->rsp.eoh += delta;
3817 cur_end += delta;
3818
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3819 txn->rsp.sol = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3820 cur_end = (char *)http_parse_stsline(&txn->rsp, rtr->data,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]3821 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3822 cur_ptr, cur_end + 1,
3823 NULL, NULL);
3824 if (unlikely(!cur_end))
3825 return -1;
3826
3827 /* we have a full respnse and we know that we have either a CR
3828 * or an LF at <ptr>.
3829 */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3830 txn->status = strl2ui(rtr->data + txn->rsp.sl.st.c, txn->rsp.sl.st.c_l);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3831 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.rq.l, *cur_end == '\r');
3832 /* there is no point trying this regex on headers */
3833 return 1;
3834 }
3835 }
3836 *cur_end = term; /* restore the string terminator */
3837 return done;
3838}
3839
3840
3841
3842/*
3843 * Apply all the resp filters <exp> to all headers in buffer <rtr> of session <t>.
3844 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
3845 * unparsable response.
3846 */
3847int apply_filters_to_response(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
3848{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3849 struct http_txn *txn = &t->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3850 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3851 while (exp && !(txn->flags & TX_SVDENY)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3852 int ret;
3853
3854 /*
3855 * The interleaving of transformations and verdicts
3856 * makes it difficult to decide to continue or stop
3857 * the evaluation.
3858 */
3859
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3860 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3861 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
3862 exp->action == ACT_PASS)) {
3863 exp = exp->next;
3864 continue;
3865 }
3866
3867 /* Apply the filter to the status line. */
3868 ret = apply_filter_to_sts_line(t, rtr, exp);
3869 if (unlikely(ret < 0))
3870 return -1;
3871
3872 if (likely(ret == 0)) {
3873 /* The filter did not match the response, it can be
3874 * iterated through all headers.
3875 */
3876 apply_filter_to_resp_headers(t, rtr, exp);
3877 }
3878 exp = exp->next;
3879 }
3880 return 0;
3881}
3882
3883
3884
3885/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3886 * Manage server-side cookies. It can impact performance by about 2% so it is
3887 * desirable to call it only when needed.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3888 */
3889void manage_server_side_cookies(struct session *t, struct buffer *rtr)
3890{
3891 struct http_txn *txn = &t->txn;
3892 char *p1, *p2, *p3, *p4;
3893
3894 appsess *asession_temp = NULL;
3895 appsess local_asession;
3896
3897 char *cur_ptr, *cur_end, *cur_next;
3898 int cur_idx, old_idx, delta;
3899
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3900 /* Iterate through the headers.
3901 * we start with the start line.
3902 */
3903 old_idx = 0;
3904 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
3905
3906 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
3907 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3908 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3909
3910 cur_hdr = &txn->hdr_idx.v[cur_idx];
3911 cur_ptr = cur_next;
3912 cur_end = cur_ptr + cur_hdr->len;
3913 cur_next = cur_end + cur_hdr->cr + 1;
3914
3915 /* We have one full header between cur_ptr and cur_end, and the
3916 * next header starts at cur_next. We're only interested in
3917 * "Cookie:" headers.
3918 */
3919
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3920 val = http_header_match2(cur_ptr, cur_end, "Set-Cookie", 10);
3921 if (!val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3922 old_idx = cur_idx;
3923 continue;
3924 }
3925
3926 /* OK, right now we know we have a set-cookie at cur_ptr */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3927 txn->flags |= TX_SCK_ANY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3928
3929
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3930 /* maybe we only wanted to see if there was a set-cookie. Note that
3931 * the cookie capture is declared in the fronend.
3932 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3933 if (t->be->cookie_name == NULL &&
3934 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3935 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3936 return;
3937
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3938 p1 = cur_ptr + val; /* first non-space char after 'Set-Cookie:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3939
3940 while (p1 < cur_end) { /* in fact, we'll break after the first cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3941 if (p1 == cur_end || *p1 == ';') /* end of cookie */
3942 break;
3943
3944 /* p1 is at the beginning of the cookie name */
3945 p2 = p1;
3946
3947 while (p2 < cur_end && *p2 != '=' && *p2 != ';')
3948 p2++;
3949
3950 if (p2 == cur_end || *p2 == ';') /* next cookie */
3951 break;
3952
3953 p3 = p2 + 1; /* skip the '=' sign */
3954 if (p3 == cur_end)
3955 break;
3956
3957 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3958 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';')
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3959 p4++;
3960
3961 /* here, we have the cookie name between p1 and p2,
3962 * and its value between p3 and p4.
3963 * we can process it.
3964 */
3965
3966 /* first, let's see if we want to capture it */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3967 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3968 txn->srv_cookie == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3969 (p4 - p1 >= t->fe->capture_namelen) &&
3970 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3971 int log_len = p4 - p1;
3972
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]3973 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3974 Alert("HTTP logging : out of memory.\n");
3975 }
3976
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3977 if (log_len > t->fe->capture_len)
3978 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3979 memcpy(txn->srv_cookie, p1, log_len);
3980 txn->srv_cookie[log_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3981 }
3982
3983 /* now check if we need to process it for persistence */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3984 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
3985 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3986 /* Cool... it's the right one */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3987 txn->flags |= TX_SCK_SEEN;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3988
3989 /* If the cookie is in insert mode on a known server, we'll delete
3990 * this occurrence because we'll insert another one later.
3991 * We'll delete it too if the "indirect" option is set and we're in
3992 * a direct access. */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3993 if (((t->srv) && (t->be->options & PR_O_COOK_INS)) ||
3994 ((t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_IND))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3995 /* this header must be deleted */
3996 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
3997 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3998 txn->hdr_idx.used--;
3999 cur_hdr->len = 0;
4000 cur_next += delta;
4001 txn->rsp.eoh += delta;
4002
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4003 txn->flags |= TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4004 }
4005 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4006 (t->be->options & PR_O_COOK_RW)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4007 /* replace bytes p3->p4 with the cookie name associated
4008 * with this server since we know it.
4009 */
4010 delta = buffer_replace2(rtr, p3, p4, t->srv->cookie, t->srv->cklen);
4011 cur_hdr->len += delta;
4012 cur_next += delta;
4013 txn->rsp.eoh += delta;
4014
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4015 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4016 }
4017 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4018 (t->be->options & PR_O_COOK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4019 /* insert the cookie name associated with this server
4020 * before existing cookie, and insert a delimitor between them..
4021 */
4022 delta = buffer_replace2(rtr, p3, p3, t->srv->cookie, t->srv->cklen + 1);
4023 cur_hdr->len += delta;
4024 cur_next += delta;
4025 txn->rsp.eoh += delta;
4026
4027 p3[t->srv->cklen] = COOKIE_DELIM;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4028 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4029 }
4030 }
4031 /* next, let's see if the cookie is our appcookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4032 else if ((t->be->appsession_name != NULL) &&
4033 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4034
4035 /* Cool... it's the right one */
4036
4037 size_t server_id_len = strlen(t->srv->id) + 1;
4038 asession_temp = &local_asession;
4039
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4040 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4041 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4042 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4043 return;
4044 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4045 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4046 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4047 asession_temp->serverid = NULL;
4048
4049 /* only do insert, if lookup fails */
Ryan Warnick6d0b1fa2008-02-17 11:24:35 +0100[diff] [blame]4050 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
4051 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4052 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4053 Alert("Not enough Memory process_srv():asession:calloc().\n");
4054 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
4055 return;
4056 }
4057 asession_temp->sessid = local_asession.sessid;
4058 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4059 asession_temp->request_count = 0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4060 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
4061 } else {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4062 /* free wasted memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4063 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4064 }
4065
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4066 if (asession_temp->serverid == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4067 if ((asession_temp->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4068 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4069 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4070 return;
4071 }
4072 asession_temp->serverid[0] = '\0';
4073 }
4074
4075 if (asession_temp->serverid[0] == '\0')
4076 memcpy(asession_temp->serverid, t->srv->id, server_id_len);
4077
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]4078 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4079 asession_temp->request_count++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4080#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4081 Alert("manage_server_side_cookies\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4082 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4083#endif
4084 }/* end if ((t->proxy->appsession_name != NULL) ... */
4085 break; /* we don't want to loop again since there cannot be another cookie on the same line */
4086 } /* we're now at the end of the cookie value */
4087
4088 /* keep the link from this header to next one */
4089 old_idx = cur_idx;
4090 } /* end of cookie processing on this header */
4091}
4092
4093
4094
4095/*
4096 * Check if response is cacheable or not. Updates t->flags.
4097 */
4098void check_response_for_cacheability(struct session *t, struct buffer *rtr)
4099{
4100 struct http_txn *txn = &t->txn;
4101 char *p1, *p2;
4102
4103 char *cur_ptr, *cur_end, *cur_next;
4104 int cur_idx;
4105
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]4106 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4107 return;
4108
4109 /* Iterate through the headers.
4110 * we start with the start line.
4111 */
4112 cur_idx = 0;
4113 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4114
4115 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4116 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4117 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4118
4119 cur_hdr = &txn->hdr_idx.v[cur_idx];
4120 cur_ptr = cur_next;
4121 cur_end = cur_ptr + cur_hdr->len;
4122 cur_next = cur_end + cur_hdr->cr + 1;
4123
4124 /* We have one full header between cur_ptr and cur_end, and the
4125 * next header starts at cur_next. We're only interested in
4126 * "Cookie:" headers.
4127 */
4128
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4129 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
4130 if (val) {
4131 if ((cur_end - (cur_ptr + val) >= 8) &&
4132 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
4133 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
4134 return;
4135 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4136 }
4137
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4138 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
4139 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4140 continue;
4141
4142 /* OK, right now we know we have a cache-control header at cur_ptr */
4143
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4144 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4145
4146 if (p1 >= cur_end) /* no more info */
4147 continue;
4148
4149 /* p1 is at the beginning of the value */
4150 p2 = p1;
4151
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4152 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4153 p2++;
4154
4155 /* we have a complete value between p1 and p2 */
4156 if (p2 < cur_end && *p2 == '=') {
4157 /* we have something of the form no-cache="set-cookie" */
4158 if ((cur_end - p1 >= 21) &&
4159 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
4160 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4161 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4162 continue;
4163 }
4164
4165 /* OK, so we know that either p2 points to the end of string or to a comma */
4166 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
4167 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
4168 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
4169 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4170 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4171 return;
4172 }
4173
4174 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4175 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4176 continue;
4177 }
4178 }
4179}
4180
4181
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4182/*
4183 * Try to retrieve a known appsession in the URI, then the associated server.
4184 * If the server is found, it's assigned to the session.
4185 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4186void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4187{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4188 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4189 appsess *asession_temp = NULL;
4190 appsess local_asession;
4191 char *request_line;
4192
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4193 if (t->be->appsession_name == NULL ||
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]4194 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST) ||
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4195 (request_line = memchr(begin, ';', len)) == NULL ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4196 ((1 + t->be->appsession_name_len + 1 + t->be->appsession_len) > (begin + len - request_line)))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4197 return;
4198
4199 /* skip ';' */
4200 request_line++;
4201
4202 /* look if we have a jsessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4203 if (strncasecmp(request_line, t->be->appsession_name, t->be->appsession_name_len) != 0)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4204 return;
4205
4206 /* skip jsessionid= */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4207 request_line += t->be->appsession_name_len + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4208
4209 /* First try if we already have an appsession */
4210 asession_temp = &local_asession;
4211
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4212 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4213 Alert("Not enough memory process_cli():asession_temp->sessid:calloc().\n");
4214 send_log(t->be, LOG_ALERT, "Not enough Memory process_cli():asession_temp->sessid:calloc().\n");
4215 return;
4216 }
4217
4218 /* Copy the sessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4219 memcpy(asession_temp->sessid, request_line, t->be->appsession_len);
4220 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4221 asession_temp->serverid = NULL;
4222
4223 /* only do insert, if lookup fails */
Ryan Warnick6d0b1fa2008-02-17 11:24:35 +0100[diff] [blame]4224 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
4225 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4226 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4227 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4228 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4229 Alert("Not enough memory process_cli():asession:calloc().\n");
4230 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4231 return;
4232 }
4233 asession_temp->sessid = local_asession.sessid;
4234 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4235 asession_temp->request_count=0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4236 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4237 }
4238 else {
4239 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4240 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4241 }
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4242
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]4243 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4244 asession_temp->request_count++;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4245
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4246#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4247 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4248 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4249#endif
4250 if (asession_temp->serverid == NULL) {
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4251 /* TODO redispatch request */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4252 Alert("Found Application Session without matching server.\n");
4253 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4254 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4255 while (srv) {
4256 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4257 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4258 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4259 txn->flags &= ~TX_CK_MASK;
4260 txn->flags |= TX_CK_VALID;
4261 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4262 t->srv = srv;
4263 break;
4264 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4265 txn->flags &= ~TX_CK_MASK;
4266 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4267 }
4268 }
4269 srv = srv->next;
4270 }
4271 }
4272}
4273
4274
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4275/*
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4276 * In a GET or HEAD request, check if the requested URI matches the stats uri
4277 * for the current backend, and if an authorization has been passed and is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4278 *
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4279 * It is assumed that the request is either a HEAD or GET and that the
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4280 * t->be->uri_auth field is valid. An HTTP/401 response may be sent, or
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4281 * produce_content() can be called to start sending data.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4282 *
4283 * Returns 1 if the session's state changes, otherwise 0.
4284 */
4285int stats_check_uri_auth(struct session *t, struct proxy *backend)
4286{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4287 struct http_txn *txn = &t->txn;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4288 struct uri_auth *uri_auth = backend->uri_auth;
4289 struct user_auth *user;
4290 int authenticated, cur_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4291 char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4292
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4293 memset(&t->data_ctx.stats, 0, sizeof(t->data_ctx.stats));
4294
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4295 /* check URI size */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4296 if (uri_auth->uri_len > txn->req.sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4297 return 0;
4298
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4299 h = t->req->data + txn->req.sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4300
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4301 /* the URI is in h */
4302 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4303 return 0;
4304
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4305 h += uri_auth->uri_len;
4306 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 3) {
4307 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4308 t->data_ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4309 break;
4310 }
4311 h++;
4312 }
4313
4314 if (uri_auth->refresh) {
4315 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4316 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 10) {
4317 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4318 t->data_ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4319 break;
4320 }
4321 h++;
4322 }
4323 }
4324
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]4325 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4326 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 4) {
4327 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4328 t->data_ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]4329 break;
4330 }
4331 h++;
4332 }
4333
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4334 t->data_ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
4335
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4336 /* we are in front of a interceptable URI. Let's check
4337 * if there's an authentication and if it's valid.
4338 */
4339 user = uri_auth->users;
4340 if (!user) {
4341 /* no user auth required, it's OK */
4342 authenticated = 1;
4343 } else {
4344 authenticated = 0;
4345
4346 /* a user list is defined, we have to check.
4347 * skip 21 chars for "Authorization: Basic ".
4348 */
4349
4350 /* FIXME: this should move to an earlier place */
4351 cur_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4352 h = t->req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
4353 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4354 int len = txn->hdr_idx.v[cur_idx].len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4355 if (len > 14 &&
4356 !strncasecmp("Authorization:", h, 14)) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4357 txn->auth_hdr.str = h;
4358 txn->auth_hdr.len = len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4359 break;
4360 }
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4361 h += len + txn->hdr_idx.v[cur_idx].cr + 1;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4362 }
4363
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4364 if (txn->auth_hdr.len < 21 ||
4365 memcmp(txn->auth_hdr.str + 14, " Basic ", 7))
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4366 user = NULL;
4367
4368 while (user) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4369 if ((txn->auth_hdr.len == user->user_len + 14 + 7)
4370 && !memcmp(txn->auth_hdr.str + 14 + 7,
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4371 user->user_pwd, user->user_len)) {
4372 authenticated = 1;
4373 break;
4374 }
4375 user = user->next;
4376 }
4377 }
4378
4379 if (!authenticated) {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4380 struct chunk msg;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4381
4382 /* no need to go further */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4383 msg.str = trash;
4384 msg.len = sprintf(trash, HTTP_401_fmt, uri_auth->auth_realm);
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4385 txn->status = 401;
Willy Tarreaudded32d2008-11-30 19:48:07 +0100[diff] [blame]4386 stream_int_retnclose(t->req->prod, &msg);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]4387 t->req->analysers = 0;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4388 if (!(t->flags & SN_ERR_MASK))
4389 t->flags |= SN_ERR_PRXCOND;
4390 if (!(t->flags & SN_FINST_MASK))
4391 t->flags |= SN_FINST_R;
4392 return 1;
4393 }
4394
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4395 /* The request is valid, the user is authenticated. Let's start sending
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4396 * data.
4397 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]4398 buffer_write_dis(t->req);
Willy Tarreau72b179a2008-08-28 16:01:32 +0200[diff] [blame]4399 buffer_shutw_now(t->req);
4400 buffer_shutr_now(t->rep);
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]4401 t->logs.tv_request = now;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4402 t->data_source = DATA_SRC_STATS;
4403 t->data_state = DATA_ST_INIT;
Willy Tarreau91e99932008-06-30 07:51:00 +0200[diff] [blame]4404 t->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]4405 buffer_install_hijacker(t, t->rep, produce_content);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4406 return 1;
4407}
4408
4409
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4410/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4411 * Print a debug line with a header
4412 */
4413void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
4414{
4415 int len, max;
4416 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4417 dir, (unsigned short)t->req->prod->fd, (unsigned short)t->req->cons->fd);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4418 max = end - start;
4419 UBOUND(max, sizeof(trash) - len - 1);
4420 len += strlcpy2(trash + len, start, max + 1);
4421 trash[len++] = '\n';
4422 write(1, trash, len);
4423}
4424
4425
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4426/************************************************************************/
4427/* The code below is dedicated to ACL parsing and matching */
4428/************************************************************************/
4429
4430
4431
4432
4433/* 1. Check on METHOD
4434 * We use the pre-parsed method if it is known, and store its number as an
4435 * integer. If it is unknown, we use the pointer and the length.
4436 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4437static int acl_parse_meth(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4438{
4439 int len, meth;
4440
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4441 len = strlen(*text);
4442 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4443
4444 pattern->val.i = meth;
4445 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4446 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4447 if (!pattern->ptr.str)
4448 return 0;
4449 pattern->len = len;
4450 }
4451 return 1;
4452}
4453
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4454static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4455acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, int dir,
4456 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4457{
4458 int meth;
4459 struct http_txn *txn = l7;
4460
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4461 if (!txn)
4462 return 0;
4463
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4464 if (txn->req.msg_state != HTTP_MSG_BODY)
4465 return 0;
4466
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4467 meth = txn->meth;
4468 test->i = meth;
4469 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4470 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4471 /* ensure the indexes are not affected */
4472 return 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4473 test->len = txn->req.sl.rq.m_l;
4474 test->ptr = txn->req.sol;
4475 }
4476 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4477 return 1;
4478}
4479
4480static int acl_match_meth(struct acl_test *test, struct acl_pattern *pattern)
4481{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4482 int icase;
4483
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4484 if (test->i != pattern->val.i)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4485 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4486
4487 if (test->i != HTTP_METH_OTHER)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4488 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4489
4490 /* Other method, we must compare the strings */
4491 if (pattern->len != test->len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4492 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4493
4494 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
4495 if ((icase && strncasecmp(pattern->ptr.str, test->ptr, test->len) != 0) ||
4496 (!icase && strncmp(pattern->ptr.str, test->ptr, test->len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4497 return ACL_PAT_FAIL;
4498 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4499}
4500
4501/* 2. Check on Request/Status Version
4502 * We simply compare strings here.
4503 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4504static int acl_parse_ver(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4505{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4506 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4507 if (!pattern->ptr.str)
4508 return 0;
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4509 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4510 return 1;
4511}
4512
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4513static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4514acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, int dir,
4515 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4516{
4517 struct http_txn *txn = l7;
4518 char *ptr;
4519 int len;
4520
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4521 if (!txn)
4522 return 0;
4523
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4524 if (txn->req.msg_state != HTTP_MSG_BODY)
4525 return 0;
4526
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4527 len = txn->req.sl.rq.v_l;
4528 ptr = txn->req.sol + txn->req.sl.rq.v - txn->req.som;
4529
4530 while ((len-- > 0) && (*ptr++ != '/'));
4531 if (len <= 0)
4532 return 0;
4533
4534 test->ptr = ptr;
4535 test->len = len;
4536
4537 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4538 return 1;
4539}
4540
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4541static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4542acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, int dir,
4543 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4544{
4545 struct http_txn *txn = l7;
4546 char *ptr;
4547 int len;
4548
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4549 if (!txn)
4550 return 0;
4551
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4552 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4553 return 0;
4554
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4555 len = txn->rsp.sl.st.v_l;
4556 ptr = txn->rsp.sol;
4557
4558 while ((len-- > 0) && (*ptr++ != '/'));
4559 if (len <= 0)
4560 return 0;
4561
4562 test->ptr = ptr;
4563 test->len = len;
4564
4565 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4566 return 1;
4567}
4568
4569/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4570static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4571acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, int dir,
4572 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4573{
4574 struct http_txn *txn = l7;
4575 char *ptr;
4576 int len;
4577
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4578 if (!txn)
4579 return 0;
4580
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4581 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4582 return 0;
4583
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4584 len = txn->rsp.sl.st.c_l;
4585 ptr = txn->rsp.sol + txn->rsp.sl.st.c - txn->rsp.som;
4586
4587 test->i = __strl2ui(ptr, len);
4588 test->flags = ACL_TEST_F_VOL_1ST;
4589 return 1;
4590}
4591
4592/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4593static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4594acl_fetch_url(struct proxy *px, struct session *l4, void *l7, int dir,
4595 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4596{
4597 struct http_txn *txn = l7;
4598
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4599 if (!txn)
4600 return 0;
4601
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4602 if (txn->req.msg_state != HTTP_MSG_BODY)
4603 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4604
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4605 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4606 /* ensure the indexes are not affected */
4607 return 0;
4608
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4609 test->len = txn->req.sl.rq.u_l;
4610 test->ptr = txn->req.sol + txn->req.sl.rq.u;
4611
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]4612 /* we do not need to set READ_ONLY because the data is in a buffer */
4613 test->flags = ACL_TEST_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4614 return 1;
4615}
4616
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4617static int
4618acl_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, int dir,
4619 struct acl_expr *expr, struct acl_test *test)
4620{
4621 struct http_txn *txn = l7;
4622
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4623 if (!txn)
4624 return 0;
4625
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4626 if (txn->req.msg_state != HTTP_MSG_BODY)
4627 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4628
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4629 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4630 /* ensure the indexes are not affected */
4631 return 0;
4632
4633 /* Parse HTTP request */
4634 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
4635 test->ptr = (void *)&((struct sockaddr_in *)&l4->srv_addr)->sin_addr;
4636 test->i = AF_INET;
4637
4638 /*
4639 * If we are parsing url in frontend space, we prepare backend stage
4640 * to not parse again the same url ! optimization lazyness...
4641 */
4642 if (px->options & PR_O_HTTP_PROXY)
4643 l4->flags |= SN_ADDR_SET;
4644
4645 test->flags = ACL_TEST_F_READ_ONLY;
4646 return 1;
4647}
4648
4649static int
4650acl_fetch_url_port(struct proxy *px, struct session *l4, void *l7, int dir,
4651 struct acl_expr *expr, struct acl_test *test)
4652{
4653 struct http_txn *txn = l7;
4654
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4655 if (!txn)
4656 return 0;
4657
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4658 if (txn->req.msg_state != HTTP_MSG_BODY)
4659 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4660
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4661 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4662 /* ensure the indexes are not affected */
4663 return 0;
4664
4665 /* Same optimization as url_ip */
4666 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
4667 test->i = ntohs(((struct sockaddr_in *)&l4->srv_addr)->sin_port);
4668
4669 if (px->options & PR_O_HTTP_PROXY)
4670 l4->flags |= SN_ADDR_SET;
4671
4672 test->flags = ACL_TEST_F_READ_ONLY;
4673 return 1;
4674}
4675
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4676/* 5. Check on HTTP header. A pointer to the beginning of the value is returned.
4677 * This generic function is used by both acl_fetch_chdr() and acl_fetch_shdr().
4678 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4679static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4680acl_fetch_hdr(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4681 struct acl_expr *expr, struct acl_test *test)
4682{
4683 struct http_txn *txn = l7;
4684 struct hdr_idx *idx = &txn->hdr_idx;
4685 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4686
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4687 if (!txn)
4688 return 0;
4689
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4690 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
4691 /* search for header from the beginning */
4692 ctx->idx = 0;
4693
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4694 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
4695 test->flags |= ACL_TEST_F_FETCH_MORE;
4696 test->flags |= ACL_TEST_F_VOL_HDR;
4697 test->len = ctx->vlen;
4698 test->ptr = (char *)ctx->line + ctx->val;
4699 return 1;
4700 }
4701
4702 test->flags &= ~ACL_TEST_F_FETCH_MORE;
4703 test->flags |= ACL_TEST_F_VOL_HDR;
4704 return 0;
4705}
4706
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4707static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4708acl_fetch_chdr(struct proxy *px, struct session *l4, void *l7, int dir,
4709 struct acl_expr *expr, struct acl_test *test)
4710{
4711 struct http_txn *txn = l7;
4712
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4713 if (!txn)
4714 return 0;
4715
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4716 if (txn->req.msg_state != HTTP_MSG_BODY)
4717 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4718
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4719 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4720 /* ensure the indexes are not affected */
4721 return 0;
4722
4723 return acl_fetch_hdr(px, l4, txn, txn->req.sol, expr, test);
4724}
4725
4726static int
4727acl_fetch_shdr(struct proxy *px, struct session *l4, void *l7, int dir,
4728 struct acl_expr *expr, struct acl_test *test)
4729{
4730 struct http_txn *txn = l7;
4731
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4732 if (!txn)
4733 return 0;
4734
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4735 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4736 return 0;
4737
4738 return acl_fetch_hdr(px, l4, txn, txn->rsp.sol, expr, test);
4739}
4740
4741/* 6. Check on HTTP header count. The number of occurrences is returned.
4742 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
4743 */
4744static int
4745acl_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4746 struct acl_expr *expr, struct acl_test *test)
4747{
4748 struct http_txn *txn = l7;
4749 struct hdr_idx *idx = &txn->hdr_idx;
4750 struct hdr_ctx ctx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4751 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4752
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4753 if (!txn)
4754 return 0;
4755
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4756 ctx.idx = 0;
4757 cnt = 0;
4758 while (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, &ctx))
4759 cnt++;
4760
4761 test->i = cnt;
4762 test->flags = ACL_TEST_F_VOL_HDR;
4763 return 1;
4764}
4765
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4766static int
4767acl_fetch_chdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
4768 struct acl_expr *expr, struct acl_test *test)
4769{
4770 struct http_txn *txn = l7;
4771
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4772 if (!txn)
4773 return 0;
4774
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4775 if (txn->req.msg_state != HTTP_MSG_BODY)
4776 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4777
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4778 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4779 /* ensure the indexes are not affected */
4780 return 0;
4781
4782 return acl_fetch_hdr_cnt(px, l4, txn, txn->req.sol, expr, test);
4783}
4784
4785static int
4786acl_fetch_shdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
4787 struct acl_expr *expr, struct acl_test *test)
4788{
4789 struct http_txn *txn = l7;
4790
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4791 if (!txn)
4792 return 0;
4793
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4794 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4795 return 0;
4796
4797 return acl_fetch_hdr_cnt(px, l4, txn, txn->rsp.sol, expr, test);
4798}
4799
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4800/* 7. Check on HTTP header's integer value. The integer value is returned.
4801 * FIXME: the type is 'int', it may not be appropriate for everything.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4802 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4803 */
4804static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4805acl_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4806 struct acl_expr *expr, struct acl_test *test)
4807{
4808 struct http_txn *txn = l7;
4809 struct hdr_idx *idx = &txn->hdr_idx;
4810 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4811
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4812 if (!txn)
4813 return 0;
4814
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4815 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
4816 /* search for header from the beginning */
4817 ctx->idx = 0;
4818
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4819 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
4820 test->flags |= ACL_TEST_F_FETCH_MORE;
4821 test->flags |= ACL_TEST_F_VOL_HDR;
4822 test->i = strl2ic((char *)ctx->line + ctx->val, ctx->vlen);
4823 return 1;
4824 }
4825
4826 test->flags &= ~ACL_TEST_F_FETCH_MORE;
4827 test->flags |= ACL_TEST_F_VOL_HDR;
4828 return 0;
4829}
4830
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4831static int
4832acl_fetch_chdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
4833 struct acl_expr *expr, struct acl_test *test)
4834{
4835 struct http_txn *txn = l7;
4836
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4837 if (!txn)
4838 return 0;
4839
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4840 if (txn->req.msg_state != HTTP_MSG_BODY)
4841 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4842
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4843 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4844 /* ensure the indexes are not affected */
4845 return 0;
4846
4847 return acl_fetch_hdr_val(px, l4, txn, txn->req.sol, expr, test);
4848}
4849
4850static int
4851acl_fetch_shdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
4852 struct acl_expr *expr, struct acl_test *test)
4853{
4854 struct http_txn *txn = l7;
4855
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4856 if (!txn)
4857 return 0;
4858
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4859 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4860 return 0;
4861
4862 return acl_fetch_hdr_val(px, l4, txn, txn->rsp.sol, expr, test);
4863}
4864
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]4865/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
4866 * the first '/' after the possible hostname, and ends before the possible '?'.
4867 */
4868static int
4869acl_fetch_path(struct proxy *px, struct session *l4, void *l7, int dir,
4870 struct acl_expr *expr, struct acl_test *test)
4871{
4872 struct http_txn *txn = l7;
4873 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4874
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4875 if (!txn)
4876 return 0;
4877
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4878 if (txn->req.msg_state != HTTP_MSG_BODY)
4879 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4880
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4881 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4882 /* ensure the indexes are not affected */
4883 return 0;
4884
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4885 end = txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
4886 ptr = http_get_path(txn);
4887 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]4888 return 0;
4889
4890 /* OK, we got the '/' ! */
4891 test->ptr = ptr;
4892
4893 while (ptr < end && *ptr != '?')
4894 ptr++;
4895
4896 test->len = ptr - test->ptr;
4897
4898 /* we do not need to set READ_ONLY because the data is in a buffer */
4899 test->flags = ACL_TEST_F_VOL_1ST;
4900 return 1;
4901}
4902
4903
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4904
4905/************************************************************************/
4906/* All supported keywords must be declared here. */
4907/************************************************************************/
4908
4909/* Note: must not be declared <const> as its list will be overwritten */
4910static struct acl_kw_list acl_kws = {{ },{
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]4911 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT },
4912 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE },
4913 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE },
4914 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4915
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]4916 { "url", acl_parse_str, acl_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE },
4917 { "url_beg", acl_parse_str, acl_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
4918 { "url_end", acl_parse_str, acl_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE },
4919 { "url_sub", acl_parse_str, acl_fetch_url, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
4920 { "url_dir", acl_parse_str, acl_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
4921 { "url_dom", acl_parse_str, acl_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
4922 { "url_reg", acl_parse_reg, acl_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
4923 { "url_ip", acl_parse_ip, acl_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE },
4924 { "url_port", acl_parse_int, acl_fetch_url_port, acl_match_int, ACL_USE_L7REQ_VOLATILE },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4925
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]4926 /* note: we should set hdr* to use ACL_USE_HDR_VOLATILE, and chdr* to use L7REQ_VOLATILE */
4927 { "hdr", acl_parse_str, acl_fetch_chdr, acl_match_str, ACL_USE_L7REQ_VOLATILE },
4928 { "hdr_reg", acl_parse_reg, acl_fetch_chdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
4929 { "hdr_beg", acl_parse_str, acl_fetch_chdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
4930 { "hdr_end", acl_parse_str, acl_fetch_chdr, acl_match_end, ACL_USE_L7REQ_VOLATILE },
4931 { "hdr_sub", acl_parse_str, acl_fetch_chdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
4932 { "hdr_dir", acl_parse_str, acl_fetch_chdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
4933 { "hdr_dom", acl_parse_str, acl_fetch_chdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
4934 { "hdr_cnt", acl_parse_int, acl_fetch_chdr_cnt,acl_match_int, ACL_USE_L7REQ_VOLATILE },
4935 { "hdr_val", acl_parse_int, acl_fetch_chdr_val,acl_match_int, ACL_USE_L7REQ_VOLATILE },
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4936
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]4937 { "shdr", acl_parse_str, acl_fetch_shdr, acl_match_str, ACL_USE_L7RTR_VOLATILE },
4938 { "shdr_reg", acl_parse_reg, acl_fetch_shdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE },
4939 { "shdr_beg", acl_parse_str, acl_fetch_shdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE },
4940 { "shdr_end", acl_parse_str, acl_fetch_shdr, acl_match_end, ACL_USE_L7RTR_VOLATILE },
4941 { "shdr_sub", acl_parse_str, acl_fetch_shdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE },
4942 { "shdr_dir", acl_parse_str, acl_fetch_shdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE },
4943 { "shdr_dom", acl_parse_str, acl_fetch_shdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE },
4944 { "shdr_cnt", acl_parse_int, acl_fetch_shdr_cnt,acl_match_int, ACL_USE_L7RTR_VOLATILE },
4945 { "shdr_val", acl_parse_int, acl_fetch_shdr_val,acl_match_int, ACL_USE_L7RTR_VOLATILE },
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]4946
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]4947 { "path", acl_parse_str, acl_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE },
4948 { "path_reg", acl_parse_reg, acl_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
4949 { "path_beg", acl_parse_str, acl_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
4950 { "path_end", acl_parse_str, acl_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE },
4951 { "path_sub", acl_parse_str, acl_fetch_path, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
4952 { "path_dir", acl_parse_str, acl_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
4953 { "path_dom", acl_parse_str, acl_fetch_path, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]4954
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]4955 { NULL, NULL, NULL, NULL },
4956
4957#if 0
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4958 { "line", acl_parse_str, acl_fetch_line, acl_match_str },
4959 { "line_reg", acl_parse_reg, acl_fetch_line, acl_match_reg },
4960 { "line_beg", acl_parse_str, acl_fetch_line, acl_match_beg },
4961 { "line_end", acl_parse_str, acl_fetch_line, acl_match_end },
4962 { "line_sub", acl_parse_str, acl_fetch_line, acl_match_sub },
4963 { "line_dir", acl_parse_str, acl_fetch_line, acl_match_dir },
4964 { "line_dom", acl_parse_str, acl_fetch_line, acl_match_dom },
4965
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4966 { "cook", acl_parse_str, acl_fetch_cook, acl_match_str },
4967 { "cook_reg", acl_parse_reg, acl_fetch_cook, acl_match_reg },
4968 { "cook_beg", acl_parse_str, acl_fetch_cook, acl_match_beg },
4969 { "cook_end", acl_parse_str, acl_fetch_cook, acl_match_end },
4970 { "cook_sub", acl_parse_str, acl_fetch_cook, acl_match_sub },
4971 { "cook_dir", acl_parse_str, acl_fetch_cook, acl_match_dir },
4972 { "cook_dom", acl_parse_str, acl_fetch_cook, acl_match_dom },
4973 { "cook_pst", acl_parse_none, acl_fetch_cook, acl_match_pst },
4974
4975 { "auth_user", acl_parse_str, acl_fetch_user, acl_match_str },
4976 { "auth_regex", acl_parse_reg, acl_fetch_user, acl_match_reg },
4977 { "auth_clear", acl_parse_str, acl_fetch_auth, acl_match_str },
4978 { "auth_md5", acl_parse_str, acl_fetch_auth, acl_match_md5 },
4979 { NULL, NULL, NULL, NULL },
4980#endif
4981}};
4982
4983
4984__attribute__((constructor))
4985static void __http_protocol_init(void)
4986{
4987 acl_register_keywords(&acl_kws);
4988}
4989
4990
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4991/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4992 * Local variables:
4993 * c-indent-level: 8
4994 * c-basic-offset: 8
4995 * End:
4996 */