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git01.mediatek.com / haproxy / f8fbcef83cf9c0bc237f2aaf2345fbd6ba7d0ff9 / . / src / proto_http.c
blob: f931da4f9050acc321d8aec4291556c0970a7cd4 [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>
50#include <proto/queue.h>
51#include <proto/session.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]52#include <proto/stream_interface.h>
Willy Tarreau2d212792008-08-27 21:41:35 +0200[diff] [blame]53#include <proto/stream_sock.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]54#include <proto/task.h>
55
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]56#ifdef CONFIG_HAP_TCPSPLICE
57#include <libtcpsplice.h>
58#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]59
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]60#define DEBUG_PARSE_NO_SPEEDUP
61#undef DEBUG_PARSE_NO_SPEEDUP
62
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]63/* This is used to perform a quick jump as an alternative to a break/continue
64 * instruction. The first argument is the label for normal operation, and the
65 * second one is the break/continue instruction in the no_speedup mode.
66 */
67
68#ifdef DEBUG_PARSE_NO_SPEEDUP
69#define QUICK_JUMP(x,y) y
70#else
71#define QUICK_JUMP(x,y) goto x
72#endif
73
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]74/* This is used by remote monitoring */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]75const char HTTP_200[] =
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]76 "HTTP/1.0 200 OK\r\n"
77 "Cache-Control: no-cache\r\n"
78 "Connection: close\r\n"
79 "Content-Type: text/html\r\n"
80 "\r\n"
81 "<html><body><h1>200 OK</h1>\nHAProxy: service ready.\n</body></html>\n";
82
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]83const struct chunk http_200_chunk = {
84 .str = (char *)&HTTP_200,
85 .len = sizeof(HTTP_200)-1
86};
87
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]88const char *HTTP_301 =
89 "HTTP/1.0 301 Moved Permantenly\r\n"
90 "Cache-Control: no-cache\r\n"
91 "Connection: close\r\n"
92 "Location: "; /* not terminated since it will be concatenated with the URL */
93
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]94const char *HTTP_302 =
95 "HTTP/1.0 302 Found\r\n"
96 "Cache-Control: no-cache\r\n"
97 "Connection: close\r\n"
98 "Location: "; /* not terminated since it will be concatenated with the URL */
99
100/* same as 302 except that the browser MUST retry with the GET method */
101const char *HTTP_303 =
102 "HTTP/1.0 303 See Other\r\n"
103 "Cache-Control: no-cache\r\n"
104 "Connection: close\r\n"
105 "Location: "; /* not terminated since it will be concatenated with the URL */
106
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]107/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
108const char *HTTP_401_fmt =
109 "HTTP/1.0 401 Unauthorized\r\n"
110 "Cache-Control: no-cache\r\n"
111 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]112 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]113 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
114 "\r\n"
115 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
116
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]117
118const int http_err_codes[HTTP_ERR_SIZE] = {
119 [HTTP_ERR_400] = 400,
120 [HTTP_ERR_403] = 403,
121 [HTTP_ERR_408] = 408,
122 [HTTP_ERR_500] = 500,
123 [HTTP_ERR_502] = 502,
124 [HTTP_ERR_503] = 503,
125 [HTTP_ERR_504] = 504,
126};
127
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]128static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]129 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]130 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]131 "Cache-Control: no-cache\r\n"
132 "Connection: close\r\n"
133 "Content-Type: text/html\r\n"
134 "\r\n"
135 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
136
137 [HTTP_ERR_403] =
138 "HTTP/1.0 403 Forbidden\r\n"
139 "Cache-Control: no-cache\r\n"
140 "Connection: close\r\n"
141 "Content-Type: text/html\r\n"
142 "\r\n"
143 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
144
145 [HTTP_ERR_408] =
146 "HTTP/1.0 408 Request Time-out\r\n"
147 "Cache-Control: no-cache\r\n"
148 "Connection: close\r\n"
149 "Content-Type: text/html\r\n"
150 "\r\n"
151 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
152
153 [HTTP_ERR_500] =
154 "HTTP/1.0 500 Server Error\r\n"
155 "Cache-Control: no-cache\r\n"
156 "Connection: close\r\n"
157 "Content-Type: text/html\r\n"
158 "\r\n"
159 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
160
161 [HTTP_ERR_502] =
162 "HTTP/1.0 502 Bad Gateway\r\n"
163 "Cache-Control: no-cache\r\n"
164 "Connection: close\r\n"
165 "Content-Type: text/html\r\n"
166 "\r\n"
167 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
168
169 [HTTP_ERR_503] =
170 "HTTP/1.0 503 Service Unavailable\r\n"
171 "Cache-Control: no-cache\r\n"
172 "Connection: close\r\n"
173 "Content-Type: text/html\r\n"
174 "\r\n"
175 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
176
177 [HTTP_ERR_504] =
178 "HTTP/1.0 504 Gateway Time-out\r\n"
179 "Cache-Control: no-cache\r\n"
180 "Connection: close\r\n"
181 "Content-Type: text/html\r\n"
182 "\r\n"
183 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
184
185};
186
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]187/* We must put the messages here since GCC cannot initialize consts depending
188 * on strlen().
189 */
190struct chunk http_err_chunks[HTTP_ERR_SIZE];
191
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]192#define FD_SETS_ARE_BITFIELDS
193#ifdef FD_SETS_ARE_BITFIELDS
194/*
195 * This map is used with all the FD_* macros to check whether a particular bit
196 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
197 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
198 * byte should be encoded. Be careful to always pass bytes from 0 to 255
199 * exclusively to the macros.
200 */
201fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
202fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
203
204#else
205#error "Check if your OS uses bitfields for fd_sets"
206#endif
207
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]208void init_proto_http()
209{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]210 int i;
211 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]212 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]213
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]214 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
215 if (!http_err_msgs[msg]) {
216 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
217 abort();
218 }
219
220 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
221 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
222 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]223
224 /* initialize the log header encoding map : '{|}"#' should be encoded with
225 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
226 * URL encoding only requires '"', '#' to be encoded as well as non-
227 * printable characters above.
228 */
229 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
230 memset(url_encode_map, 0, sizeof(url_encode_map));
231 for (i = 0; i < 32; i++) {
232 FD_SET(i, hdr_encode_map);
233 FD_SET(i, url_encode_map);
234 }
235 for (i = 127; i < 256; i++) {
236 FD_SET(i, hdr_encode_map);
237 FD_SET(i, url_encode_map);
238 }
239
240 tmp = "\"#{|}";
241 while (*tmp) {
242 FD_SET(*tmp, hdr_encode_map);
243 tmp++;
244 }
245
246 tmp = "\"#";
247 while (*tmp) {
248 FD_SET(*tmp, url_encode_map);
249 tmp++;
250 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]251
252 /* memory allocations */
253 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]254 pool2_capture = create_pool("capture", CAPTURE_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]255}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]256
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]257/*
258 * We have 26 list of methods (1 per first letter), each of which can have
259 * up to 3 entries (2 valid, 1 null).
260 */
261struct http_method_desc {
262 http_meth_t meth;
263 int len;
264 const char text[8];
265};
266
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]267const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]268 ['C' - 'A'] = {
269 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
270 },
271 ['D' - 'A'] = {
272 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
273 },
274 ['G' - 'A'] = {
275 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
276 },
277 ['H' - 'A'] = {
278 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
279 },
280 ['P' - 'A'] = {
281 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
282 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
283 },
284 ['T' - 'A'] = {
285 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
286 },
287 /* rest is empty like this :
288 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
289 */
290};
291
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]292/* 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]293 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]294 * RFC2616 for those chars.
295 */
296
297const char http_is_spht[256] = {
298 [' '] = 1, ['\t'] = 1,
299};
300
301const char http_is_crlf[256] = {
302 ['\r'] = 1, ['\n'] = 1,
303};
304
305const char http_is_lws[256] = {
306 [' '] = 1, ['\t'] = 1,
307 ['\r'] = 1, ['\n'] = 1,
308};
309
310const char http_is_sep[256] = {
311 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
312 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
313 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
314 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
315 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
316};
317
318const char http_is_ctl[256] = {
319 [0 ... 31] = 1,
320 [127] = 1,
321};
322
323/*
324 * A token is any ASCII char that is neither a separator nor a CTL char.
325 * Do not overwrite values in assignment since gcc-2.95 will not handle
326 * them correctly. Instead, define every non-CTL char's status.
327 */
328const char http_is_token[256] = {
329 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
330 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
331 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
332 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
333 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
334 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
335 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
336 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
337 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
338 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
339 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
340 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
341 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
342 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
343 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
344 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
345 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
346 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
347 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
348 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
349 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
350 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
351 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
352 ['|'] = 1, ['}'] = 0, ['~'] = 1,
353};
354
355
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]356/*
357 * An http ver_token is any ASCII which can be found in an HTTP version,
358 * which includes 'H', 'T', 'P', '/', '.' and any digit.
359 */
360const char http_is_ver_token[256] = {
361 ['.'] = 1, ['/'] = 1,
362 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
363 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
364 ['H'] = 1, ['P'] = 1, ['T'] = 1,
365};
366
367
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]368#ifdef DEBUG_FULL
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]369static char *cli_stnames[4] = { "DAT", "SHR", "SHW", "CLS" };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]370#endif
371
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]372/*
373 * Adds a header and its CRLF at the tail of buffer <b>, just before the last
374 * CRLF. Text length is measured first, so it cannot be NULL.
375 * The header is also automatically added to the index <hdr_idx>, and the end
376 * of headers is automatically adjusted. The number of bytes added is returned
377 * on success, otherwise <0 is returned indicating an error.
378 */
379int http_header_add_tail(struct buffer *b, struct http_msg *msg,
380 struct hdr_idx *hdr_idx, const char *text)
381{
382 int bytes, len;
383
384 len = strlen(text);
385 bytes = buffer_insert_line2(b, b->data + msg->eoh, text, len);
386 if (!bytes)
387 return -1;
388 msg->eoh += bytes;
389 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
390}
391
392/*
393 * Adds a header and its CRLF at the tail of buffer <b>, just before the last
394 * CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
395 * the buffer is only opened and the space reserved, but nothing is copied.
396 * The header is also automatically added to the index <hdr_idx>, and the end
397 * of headers is automatically adjusted. The number of bytes added is returned
398 * on success, otherwise <0 is returned indicating an error.
399 */
400int http_header_add_tail2(struct buffer *b, struct http_msg *msg,
401 struct hdr_idx *hdr_idx, const char *text, int len)
402{
403 int bytes;
404
405 bytes = buffer_insert_line2(b, b->data + msg->eoh, text, len);
406 if (!bytes)
407 return -1;
408 msg->eoh += bytes;
409 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
410}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]411
412/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]413 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
414 * If so, returns the position of the first non-space character relative to
415 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
416 * to return a pointer to the place after the first space. Returns 0 if the
417 * header name does not match. Checks are case-insensitive.
418 */
419int http_header_match2(const char *hdr, const char *end,
420 const char *name, int len)
421{
422 const char *val;
423
424 if (hdr + len >= end)
425 return 0;
426 if (hdr[len] != ':')
427 return 0;
428 if (strncasecmp(hdr, name, len) != 0)
429 return 0;
430 val = hdr + len + 1;
431 while (val < end && HTTP_IS_SPHT(*val))
432 val++;
433 if ((val >= end) && (len + 2 <= end - hdr))
434 return len + 2; /* we may replace starting from second space */
435 return val - hdr;
436}
437
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]438/* Find the end of the header value contained between <s> and <e>.
439 * See RFC2616, par 2.2 for more information. Note that it requires
440 * a valid header to return a valid result.
441 */
442const char *find_hdr_value_end(const char *s, const char *e)
443{
444 int quoted, qdpair;
445
446 quoted = qdpair = 0;
447 for (; s < e; s++) {
448 if (qdpair) qdpair = 0;
449 else if (quoted && *s == '\\') qdpair = 1;
450 else if (quoted && *s == '"') quoted = 0;
451 else if (*s == '"') quoted = 1;
452 else if (*s == ',') return s;
453 }
454 return s;
455}
456
457/* Find the first or next occurrence of header <name> in message buffer <sol>
458 * using headers index <idx>, and return it in the <ctx> structure. This
459 * structure holds everything necessary to use the header and find next
460 * occurrence. If its <idx> member is 0, the header is searched from the
461 * beginning. Otherwise, the next occurrence is returned. The function returns
462 * 1 when it finds a value, and 0 when there is no more.
463 */
464int http_find_header2(const char *name, int len,
465 const char *sol, struct hdr_idx *idx,
466 struct hdr_ctx *ctx)
467{
468 __label__ return_hdr, next_hdr;
469 const char *eol, *sov;
470 int cur_idx;
471
472 if (ctx->idx) {
473 /* We have previously returned a value, let's search
474 * another one on the same line.
475 */
476 cur_idx = ctx->idx;
477 sol = ctx->line;
478 sov = sol + ctx->val + ctx->vlen;
479 eol = sol + idx->v[cur_idx].len;
480
481 if (sov >= eol)
482 /* no more values in this header */
483 goto next_hdr;
484
485 /* values remaining for this header, skip the comma */
486 sov++;
487 while (sov < eol && http_is_lws[(unsigned char)*sov])
488 sov++;
489
490 goto return_hdr;
491 }
492
493 /* first request for this header */
494 sol += hdr_idx_first_pos(idx);
495 cur_idx = hdr_idx_first_idx(idx);
496
497 while (cur_idx) {
498 eol = sol + idx->v[cur_idx].len;
499
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]500 if (len == 0) {
501 /* No argument was passed, we want any header.
502 * To achieve this, we simply build a fake request. */
503 while (sol + len < eol && sol[len] != ':')
504 len++;
505 name = sol;
506 }
507
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]508 if ((len < eol - sol) &&
509 (sol[len] == ':') &&
510 (strncasecmp(sol, name, len) == 0)) {
511
512 sov = sol + len + 1;
513 while (sov < eol && http_is_lws[(unsigned char)*sov])
514 sov++;
515 return_hdr:
516 ctx->line = sol;
517 ctx->idx = cur_idx;
518 ctx->val = sov - sol;
519
520 eol = find_hdr_value_end(sov, eol);
521 ctx->vlen = eol - sov;
522 return 1;
523 }
524 next_hdr:
525 sol = eol + idx->v[cur_idx].cr + 1;
526 cur_idx = idx->v[cur_idx].next;
527 }
528 return 0;
529}
530
531int http_find_header(const char *name,
532 const char *sol, struct hdr_idx *idx,
533 struct hdr_ctx *ctx)
534{
535 return http_find_header2(name, strlen(name), sol, idx, ctx);
536}
537
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]538/* This function handles a server error at the stream interface level. The
539 * stream interface is assumed to be already in a closed state. An optional
540 * message is copied into the input buffer, and an HTTP status code stored.
541 * The error flags are set to the values in arguments. Any pending request
542 * is flushed.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]543 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]544static void http_server_error(struct session *t, struct stream_interface *si,
545 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]546{
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]547 buffer_flush(si->ob);
548 buffer_flush(si->ib);
549 buffer_write_ena(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]550 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]551 t->txn.status = status;
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]552 buffer_write(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]553 }
554 if (!(t->flags & SN_ERR_MASK))
555 t->flags |= err;
556 if (!(t->flags & SN_FINST_MASK))
557 t->flags |= finst;
558}
559
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]560/* This function returns the appropriate error location for the given session
561 * and message.
562 */
563
564struct chunk *error_message(struct session *s, int msgnum)
565{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]566 if (s->be->errmsg[msgnum].str)
567 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]568 else if (s->fe->errmsg[msgnum].str)
569 return &s->fe->errmsg[msgnum];
570 else
571 return &http_err_chunks[msgnum];
572}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]573
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]574/*
575 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
576 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
577 */
578static http_meth_t find_http_meth(const char *str, const int len)
579{
580 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]581 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]582
583 m = ((unsigned)*str - 'A');
584
585 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]586 for (h = http_methods[m]; h->len > 0; h++) {
587 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]588 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]589 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]590 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]591 };
592 return HTTP_METH_OTHER;
593 }
594 return HTTP_METH_NONE;
595
596}
597
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]598/* Parse the URI from the given transaction (which is assumed to be in request
599 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
600 * It is returned otherwise.
601 */
602static char *
603http_get_path(struct http_txn *txn)
604{
605 char *ptr, *end;
606
607 ptr = txn->req.sol + txn->req.sl.rq.u;
608 end = ptr + txn->req.sl.rq.u_l;
609
610 if (ptr >= end)
611 return NULL;
612
613 /* RFC2616, par. 5.1.2 :
614 * Request-URI = "*" | absuri | abspath | authority
615 */
616
617 if (*ptr == '*')
618 return NULL;
619
620 if (isalpha((unsigned char)*ptr)) {
621 /* this is a scheme as described by RFC3986, par. 3.1 */
622 ptr++;
623 while (ptr < end &&
624 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
625 ptr++;
626 /* skip '://' */
627 if (ptr == end || *ptr++ != ':')
628 return NULL;
629 if (ptr == end || *ptr++ != '/')
630 return NULL;
631 if (ptr == end || *ptr++ != '/')
632 return NULL;
633 }
634 /* skip [user[:passwd]@]host[:[port]] */
635
636 while (ptr < end && *ptr != '/')
637 ptr++;
638
639 if (ptr == end)
640 return NULL;
641
642 /* OK, we got the '/' ! */
643 return ptr;
644}
645
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]646/* Returns a 302 for a redirectable request. This may only be called just after
647 * the stream interface has moved to SI_ST_ASS. Unprocessable requests are
648 * left unchanged and will follow normal proxy processing.
649 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]650void perform_http_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]651{
652 struct http_txn *txn;
653 struct chunk rdr;
654 char *path;
655 int len;
656
657 /* 1: create the response header */
658 rdr.len = strlen(HTTP_302);
659 rdr.str = trash;
660 memcpy(rdr.str, HTTP_302, rdr.len);
661
662 /* 2: add the server's prefix */
663 if (rdr.len + s->srv->rdr_len > sizeof(trash))
664 return;
665
666 memcpy(rdr.str + rdr.len, s->srv->rdr_pfx, s->srv->rdr_len);
667 rdr.len += s->srv->rdr_len;
668
669 /* 3: add the request URI */
670 txn = &s->txn;
671 path = http_get_path(txn);
672 if (!path)
673 return;
674
675 len = txn->req.sl.rq.u_l + (txn->req.sol+txn->req.sl.rq.u) - path;
676 if (rdr.len + len > sizeof(trash) - 4) /* 4 for CRLF-CRLF */
677 return;
678
679 memcpy(rdr.str + rdr.len, path, len);
680 rdr.len += len;
681 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
682 rdr.len += 4;
683
684 /* prepare to return without error. */
Willy Tarreau99126c32008-11-27 10:30:51 +0100[diff] [blame]685 si->shutr(si);
686 si->shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]687 si->err_type = SI_ET_NONE;
688 si->err_loc = NULL;
689 si->state = SI_ST_CLO;
690
691 /* send the message */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]692 http_server_error(s, si, SN_ERR_PRXCOND, SN_FINST_C, 302, &rdr);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]693
694 /* FIXME: we should increase a counter of redirects per server and per backend. */
695 if (s->srv)
696 s->srv->cum_sess++;
697}
698
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]699/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]700 * that the server side is closed. Note that err_type is actually a
701 * bitmask, where almost only aborts may be cumulated with other
702 * values. We consider that aborted operations are more important
703 * than timeouts or errors due to the fact that nobody else in the
704 * logs might explain incomplete retries. All others should avoid
705 * being cumulated. It should normally not be possible to have multiple
706 * aborts at once, but just in case, the first one in sequence is reported.
707 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]708void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]709{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]710 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]711
712 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]713 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
714 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]715 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]716 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
717 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]718 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]719 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
720 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]721 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]722 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
723 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]724 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]725 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
726 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]727 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]728 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
729 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]730 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]731 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
732 500, error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]733}
734
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]735extern const char sess_term_cond[8];
736extern const char sess_fin_state[8];
737extern const char *monthname[12];
738const char sess_cookie[4] = "NIDV"; /* No cookie, Invalid cookie, cookie for a Down server, Valid cookie */
739const char sess_set_cookie[8] = "N1I3PD5R"; /* No set-cookie, unknown, Set-Cookie Inserted, unknown,
740 Set-cookie seen and left unchanged (passive), Set-cookie Deleted,
741 unknown, Set-cookie Rewritten */
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]742struct pool_head *pool2_requri;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]743struct pool_head *pool2_capture;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]744
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]745/*
746 * send a log for the session when we have enough info about it.
747 * Will not log if the frontend has no log defined.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]748 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]749void http_sess_log(struct session *s)
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]750{
751 char pn[INET6_ADDRSTRLEN + strlen(":65535")];
752 struct proxy *fe = s->fe;
753 struct proxy *be = s->be;
754 struct proxy *prx_log;
755 struct http_txn *txn = &s->txn;
756 int tolog;
757 char *uri, *h;
758 char *svid;
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]759 struct tm tm;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]760 static char tmpline[MAX_SYSLOG_LEN];
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]761 int t_request;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]762 int hdr;
763
764 if (fe->logfac1 < 0 && fe->logfac2 < 0)
765 return;
766 prx_log = fe;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]767
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]768 if (s->cli_addr.ss_family == AF_INET)
769 inet_ntop(AF_INET,
770 (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
771 pn, sizeof(pn));
772 else
773 inet_ntop(AF_INET6,
774 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
775 pn, sizeof(pn));
776
Willy Tarreaub7f694f2008-06-22 17:18:02 +0200[diff] [blame]777 get_localtime(s->logs.accept_date.tv_sec, &tm);
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]778
779 /* FIXME: let's limit ourselves to frontend logging for now. */
780 tolog = fe->to_log;
781
782 h = tmpline;
783 if (fe->to_log & LW_REQHDR &&
784 txn->req.cap &&
785 (h < tmpline + sizeof(tmpline) - 10)) {
786 *(h++) = ' ';
787 *(h++) = '{';
788 for (hdr = 0; hdr < fe->nb_req_cap; hdr++) {
789 if (hdr)
790 *(h++) = '|';
791 if (txn->req.cap[hdr] != NULL)
792 h = encode_string(h, tmpline + sizeof(tmpline) - 7,
793 '#', hdr_encode_map, txn->req.cap[hdr]);
794 }
795 *(h++) = '}';
796 }
797
798 if (fe->to_log & LW_RSPHDR &&
799 txn->rsp.cap &&
800 (h < tmpline + sizeof(tmpline) - 7)) {
801 *(h++) = ' ';
802 *(h++) = '{';
803 for (hdr = 0; hdr < fe->nb_rsp_cap; hdr++) {
804 if (hdr)
805 *(h++) = '|';
806 if (txn->rsp.cap[hdr] != NULL)
807 h = encode_string(h, tmpline + sizeof(tmpline) - 4,
808 '#', hdr_encode_map, txn->rsp.cap[hdr]);
809 }
810 *(h++) = '}';
811 }
812
813 if (h < tmpline + sizeof(tmpline) - 4) {
814 *(h++) = ' ';
815 *(h++) = '"';
816 uri = txn->uri ? txn->uri : "<BADREQ>";
817 h = encode_string(h, tmpline + sizeof(tmpline) - 1,
818 '#', url_encode_map, uri);
819 *(h++) = '"';
820 }
821 *h = '\0';
822
823 svid = (tolog & LW_SVID) ?
824 (s->data_source != DATA_SRC_STATS) ?
825 (s->srv != NULL) ? s->srv->id : "<NOSRV>" : "<STATS>" : "-";
826
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]827 t_request = -1;
828 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
829 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
830
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]831 send_log(prx_log, LOG_INFO,
832 "%s:%d [%02d/%s/%04d:%02d:%02d:%02d.%03d]"
833 " %s %s/%s %d/%d/%d/%d/%s%d %d %s%lld"
Krzysztof Piotr Oledzki25b501a2008-01-06 16:36:16 +0100[diff] [blame]834 " %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]835 pn,
836 (s->cli_addr.ss_family == AF_INET) ?
837 ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port) :
838 ntohs(((struct sockaddr_in6 *)&s->cli_addr)->sin6_port),
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]839 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
Willy Tarreaub7f694f2008-06-22 17:18:02 +0200[diff] [blame]840 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]841 fe->id, be->id, svid,
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]842 t_request,
843 (s->logs.t_queue >= 0) ? s->logs.t_queue - t_request : -1,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]844 (s->logs.t_connect >= 0) ? s->logs.t_connect - s->logs.t_queue : -1,
845 (s->logs.t_data >= 0) ? s->logs.t_data - s->logs.t_connect : -1,
846 (tolog & LW_BYTES) ? "" : "+", s->logs.t_close,
847 txn->status,
Willy Tarreau8b3977f2008-01-18 11:16:32 +0100[diff] [blame]848 (tolog & LW_BYTES) ? "" : "+", s->logs.bytes_out,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]849 txn->cli_cookie ? txn->cli_cookie : "-",
850 txn->srv_cookie ? txn->srv_cookie : "-",
851 sess_term_cond[(s->flags & SN_ERR_MASK) >> SN_ERR_SHIFT],
852 sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_FINST_SHIFT],
853 (be->options & PR_O_COOK_ANY) ? sess_cookie[(txn->flags & TX_CK_MASK) >> TX_CK_SHIFT] : '-',
854 (be->options & PR_O_COOK_ANY) ? sess_set_cookie[(txn->flags & TX_SCK_MASK) >> TX_SCK_SHIFT] : '-',
855 actconn, fe->feconn, be->beconn, s->srv ? s->srv->cur_sess : 0,
Krzysztof Piotr Oledzki25b501a2008-01-06 16:36:16 +0100[diff] [blame]856 (s->flags & SN_REDISP)?"+":"",
857 (s->conn_retries>0)?(be->conn_retries - s->conn_retries):be->conn_retries,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]858 s->logs.srv_queue_size, s->logs.prx_queue_size, tmpline);
859
860 s->logs.logwait = 0;
861}
862
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]863
864/*
865 * Capture headers from message starting at <som> according to header list
866 * <cap_hdr>, and fill the <idx> structure appropriately.
867 */
868void capture_headers(char *som, struct hdr_idx *idx,
869 char **cap, struct cap_hdr *cap_hdr)
870{
871 char *eol, *sol, *col, *sov;
872 int cur_idx;
873 struct cap_hdr *h;
874 int len;
875
876 sol = som + hdr_idx_first_pos(idx);
877 cur_idx = hdr_idx_first_idx(idx);
878
879 while (cur_idx) {
880 eol = sol + idx->v[cur_idx].len;
881
882 col = sol;
883 while (col < eol && *col != ':')
884 col++;
885
886 sov = col + 1;
887 while (sov < eol && http_is_lws[(unsigned char)*sov])
888 sov++;
889
890 for (h = cap_hdr; h; h = h->next) {
891 if ((h->namelen == col - sol) &&
892 (strncasecmp(sol, h->name, h->namelen) == 0)) {
893 if (cap[h->index] == NULL)
894 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]895 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]896
897 if (cap[h->index] == NULL) {
898 Alert("HTTP capture : out of memory.\n");
899 continue;
900 }
901
902 len = eol - sov;
903 if (len > h->len)
904 len = h->len;
905
906 memcpy(cap[h->index], sov, len);
907 cap[h->index][len]=0;
908 }
909 }
910 sol = eol + idx->v[cur_idx].cr + 1;
911 cur_idx = idx->v[cur_idx].next;
912 }
913}
914
915
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]916/* either we find an LF at <ptr> or we jump to <bad>.
917 */
918#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
919
920/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
921 * otherwise to <http_msg_ood> with <state> set to <st>.
922 */
923#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
924 ptr++; \
925 if (likely(ptr < end)) \
926 goto good; \
927 else { \
928 state = (st); \
929 goto http_msg_ood; \
930 } \
931 } while (0)
932
933
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]934/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]935 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]936 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
937 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
938 * will give undefined results.
939 * Note that it is upon the caller's responsibility to ensure that ptr < end,
940 * and that msg->sol points to the beginning of the response.
941 * If a complete line is found (which implies that at least one CR or LF is
942 * found before <end>, the updated <ptr> is returned, otherwise NULL is
943 * returned indicating an incomplete line (which does not mean that parts have
944 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
945 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
946 * upon next call.
947 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]948 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]949 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
950 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]951 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]952 */
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]953const char *http_parse_stsline(struct http_msg *msg, const char *msg_buf,
954 unsigned int state, const char *ptr, const char *end,
955 char **ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]956{
957 __label__
958 http_msg_rpver,
959 http_msg_rpver_sp,
960 http_msg_rpcode,
961 http_msg_rpcode_sp,
962 http_msg_rpreason,
963 http_msg_rpline_eol,
964 http_msg_ood, /* out of data */
965 http_msg_invalid;
966
967 switch (state) {
968 http_msg_rpver:
969 case HTTP_MSG_RPVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]970 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]971 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
972
973 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]974 msg->sl.st.v_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]975 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
976 }
977 goto http_msg_invalid;
978
979 http_msg_rpver_sp:
980 case HTTP_MSG_RPVER_SP:
981 if (likely(!HTTP_IS_LWS(*ptr))) {
982 msg->sl.st.c = ptr - msg_buf;
983 goto http_msg_rpcode;
984 }
985 if (likely(HTTP_IS_SPHT(*ptr)))
986 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
987 /* so it's a CR/LF, this is invalid */
988 goto http_msg_invalid;
989
990 http_msg_rpcode:
991 case HTTP_MSG_RPCODE:
992 if (likely(!HTTP_IS_LWS(*ptr)))
993 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
994
995 if (likely(HTTP_IS_SPHT(*ptr))) {
996 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
997 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
998 }
999
1000 /* so it's a CR/LF, so there is no reason phrase */
1001 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
1002 http_msg_rsp_reason:
1003 /* FIXME: should we support HTTP responses without any reason phrase ? */
1004 msg->sl.st.r = ptr - msg_buf;
1005 msg->sl.st.r_l = 0;
1006 goto http_msg_rpline_eol;
1007
1008 http_msg_rpcode_sp:
1009 case HTTP_MSG_RPCODE_SP:
1010 if (likely(!HTTP_IS_LWS(*ptr))) {
1011 msg->sl.st.r = ptr - msg_buf;
1012 goto http_msg_rpreason;
1013 }
1014 if (likely(HTTP_IS_SPHT(*ptr)))
1015 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1016 /* so it's a CR/LF, so there is no reason phrase */
1017 goto http_msg_rsp_reason;
1018
1019 http_msg_rpreason:
1020 case HTTP_MSG_RPREASON:
1021 if (likely(!HTTP_IS_CRLF(*ptr)))
1022 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
1023 msg->sl.st.r_l = (ptr - msg_buf) - msg->sl.st.r;
1024 http_msg_rpline_eol:
1025 /* We have seen the end of line. Note that we do not
1026 * necessarily have the \n yet, but at least we know that we
1027 * have EITHER \r OR \n, otherwise the response would not be
1028 * complete. We can then record the response length and return
1029 * to the caller which will be able to register it.
1030 */
1031 msg->sl.st.l = ptr - msg->sol;
1032 return ptr;
1033
1034#ifdef DEBUG_FULL
1035 default:
1036 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1037 exit(1);
1038#endif
1039 }
1040
1041 http_msg_ood:
1042 /* out of data */
1043 if (ret_state)
1044 *ret_state = state;
1045 if (ret_ptr)
1046 *ret_ptr = (char *)ptr;
1047 return NULL;
1048
1049 http_msg_invalid:
1050 /* invalid message */
1051 if (ret_state)
1052 *ret_state = HTTP_MSG_ERROR;
1053 return NULL;
1054}
1055
1056
1057/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1058 * This function parses a request line between <ptr> and <end>, starting with
1059 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1060 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1061 * will give undefined results.
1062 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1063 * and that msg->sol points to the beginning of the request.
1064 * If a complete line is found (which implies that at least one CR or LF is
1065 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1066 * returned indicating an incomplete line (which does not mean that parts have
1067 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1068 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1069 * upon next call.
1070 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1071 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1072 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1073 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1074 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1075 */
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1076const char *http_parse_reqline(struct http_msg *msg, const char *msg_buf,
1077 unsigned int state, const char *ptr, const char *end,
1078 char **ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1079{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1080 __label__
1081 http_msg_rqmeth,
1082 http_msg_rqmeth_sp,
1083 http_msg_rquri,
1084 http_msg_rquri_sp,
1085 http_msg_rqver,
1086 http_msg_rqline_eol,
1087 http_msg_ood, /* out of data */
1088 http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1089
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1090 switch (state) {
1091 http_msg_rqmeth:
1092 case HTTP_MSG_RQMETH:
1093 if (likely(HTTP_IS_TOKEN(*ptr)))
1094 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1095
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1096 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1097 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1098 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1099 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1100
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1101 if (likely(HTTP_IS_CRLF(*ptr))) {
1102 /* HTTP 0.9 request */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1103 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1104 http_msg_req09_uri:
1105 msg->sl.rq.u = ptr - msg_buf;
1106 http_msg_req09_uri_e:
1107 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1108 http_msg_req09_ver:
1109 msg->sl.rq.v = ptr - msg_buf;
1110 msg->sl.rq.v_l = 0;
1111 goto http_msg_rqline_eol;
1112 }
1113 goto http_msg_invalid;
1114
1115 http_msg_rqmeth_sp:
1116 case HTTP_MSG_RQMETH_SP:
1117 if (likely(!HTTP_IS_LWS(*ptr))) {
1118 msg->sl.rq.u = ptr - msg_buf;
1119 goto http_msg_rquri;
1120 }
1121 if (likely(HTTP_IS_SPHT(*ptr)))
1122 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1123 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1124 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1125
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1126 http_msg_rquri:
1127 case HTTP_MSG_RQURI:
1128 if (likely(!HTTP_IS_LWS(*ptr)))
1129 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1130
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1131 if (likely(HTTP_IS_SPHT(*ptr))) {
1132 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1133 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1134 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1135
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1136 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1137 goto http_msg_req09_uri_e;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1138
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1139 http_msg_rquri_sp:
1140 case HTTP_MSG_RQURI_SP:
1141 if (likely(!HTTP_IS_LWS(*ptr))) {
1142 msg->sl.rq.v = ptr - msg_buf;
1143 goto http_msg_rqver;
1144 }
1145 if (likely(HTTP_IS_SPHT(*ptr)))
1146 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1147 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1148 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1149
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1150 http_msg_rqver:
1151 case HTTP_MSG_RQVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1152 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1153 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1154
1155 if (likely(HTTP_IS_CRLF(*ptr))) {
1156 msg->sl.rq.v_l = (ptr - msg_buf) - msg->sl.rq.v;
1157 http_msg_rqline_eol:
1158 /* We have seen the end of line. Note that we do not
1159 * necessarily have the \n yet, but at least we know that we
1160 * have EITHER \r OR \n, otherwise the request would not be
1161 * complete. We can then record the request length and return
1162 * to the caller which will be able to register it.
1163 */
1164 msg->sl.rq.l = ptr - msg->sol;
1165 return ptr;
1166 }
1167
1168 /* neither an HTTP_VER token nor a CRLF */
1169 goto http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1170
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1171#ifdef DEBUG_FULL
1172 default:
1173 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1174 exit(1);
1175#endif
1176 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1177
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1178 http_msg_ood:
1179 /* out of data */
1180 if (ret_state)
1181 *ret_state = state;
1182 if (ret_ptr)
1183 *ret_ptr = (char *)ptr;
1184 return NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1185
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1186 http_msg_invalid:
1187 /* invalid message */
1188 if (ret_state)
1189 *ret_state = HTTP_MSG_ERROR;
1190 return NULL;
1191}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1192
1193
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1194/*
1195 * This function parses an HTTP message, either a request or a response,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1196 * depending on the initial msg->msg_state. It can be preempted everywhere
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1197 * when data are missing and recalled at the exact same location with no
1198 * information loss. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1199 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
1200 * fields.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1201 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1202void http_msg_analyzer(struct buffer *buf, struct http_msg *msg, struct hdr_idx *idx)
1203{
1204 __label__
1205 http_msg_rqbefore,
1206 http_msg_rqbefore_cr,
1207 http_msg_rqmeth,
1208 http_msg_rqline_end,
1209 http_msg_hdr_first,
1210 http_msg_hdr_name,
1211 http_msg_hdr_l1_sp,
1212 http_msg_hdr_l1_lf,
1213 http_msg_hdr_l1_lws,
1214 http_msg_hdr_val,
1215 http_msg_hdr_l2_lf,
1216 http_msg_hdr_l2_lws,
1217 http_msg_complete_header,
1218 http_msg_last_lf,
1219 http_msg_ood, /* out of data */
1220 http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1221
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1222 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1223 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1224
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1225 state = msg->msg_state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1226 ptr = buf->lr;
1227 end = buf->r;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1228
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1229 if (unlikely(ptr >= end))
1230 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1231
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1232 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1233 /*
1234 * First, states that are specific to the response only.
1235 * We check them first so that request and headers are
1236 * closer to each other (accessed more often).
1237 */
1238 http_msg_rpbefore:
1239 case HTTP_MSG_RPBEFORE:
1240 if (likely(HTTP_IS_TOKEN(*ptr))) {
1241 if (likely(ptr == buf->data)) {
1242 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1243 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1244 } else {
1245#if PARSE_PRESERVE_EMPTY_LINES
1246 /* only skip empty leading lines, don't remove them */
1247 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1248 msg->som = ptr - buf->data;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1249#else
1250 /* Remove empty leading lines, as recommended by
1251 * RFC2616. This takes a lot of time because we
1252 * must move all the buffer backwards, but this
1253 * is rarely needed. The method above will be
1254 * cleaner when we'll be able to start sending
1255 * the request from any place in the buffer.
1256 */
1257 buf->lr = ptr;
1258 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1259 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1260 msg->sol = buf->data;
1261 ptr = buf->data;
1262 end = buf->r;
1263#endif
1264 }
1265 hdr_idx_init(idx);
1266 state = HTTP_MSG_RPVER;
1267 goto http_msg_rpver;
1268 }
1269
1270 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1271 goto http_msg_invalid;
1272
1273 if (unlikely(*ptr == '\n'))
1274 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1275 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1276 /* stop here */
1277
1278 http_msg_rpbefore_cr:
1279 case HTTP_MSG_RPBEFORE_CR:
1280 EXPECT_LF_HERE(ptr, http_msg_invalid);
1281 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1282 /* stop here */
1283
1284 http_msg_rpver:
1285 case HTTP_MSG_RPVER:
1286 case HTTP_MSG_RPVER_SP:
1287 case HTTP_MSG_RPCODE:
1288 case HTTP_MSG_RPCODE_SP:
1289 case HTTP_MSG_RPREASON:
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1290 ptr = (char *)http_parse_stsline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1291 &buf->lr, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1292 if (unlikely(!ptr))
1293 return;
1294
1295 /* we have a full response and we know that we have either a CR
1296 * or an LF at <ptr>.
1297 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1298 //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]1299 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1300
1301 msg->sol = ptr;
1302 if (likely(*ptr == '\r'))
1303 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1304 goto http_msg_rpline_end;
1305
1306 http_msg_rpline_end:
1307 case HTTP_MSG_RPLINE_END:
1308 /* msg->sol must point to the first of CR or LF. */
1309 EXPECT_LF_HERE(ptr, http_msg_invalid);
1310 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1311 /* stop here */
1312
1313 /*
1314 * Second, states that are specific to the request only
1315 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1316 http_msg_rqbefore:
1317 case HTTP_MSG_RQBEFORE:
1318 if (likely(HTTP_IS_TOKEN(*ptr))) {
1319 if (likely(ptr == buf->data)) {
1320 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1321 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1322 } else {
1323#if PARSE_PRESERVE_EMPTY_LINES
1324 /* only skip empty leading lines, don't remove them */
1325 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1326 msg->som = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1327#else
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1328 /* Remove empty leading lines, as recommended by
1329 * RFC2616. This takes a lot of time because we
1330 * must move all the buffer backwards, but this
1331 * is rarely needed. The method above will be
1332 * cleaner when we'll be able to start sending
1333 * the request from any place in the buffer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1334 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1335 buf->lr = ptr;
1336 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1337 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1338 msg->sol = buf->data;
1339 ptr = buf->data;
1340 end = buf->r;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1341#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1342 }
Willy Tarreauf0d058e2007-01-25 12:03:42 +0100[diff] [blame]1343 /* we will need this when keep-alive will be supported
1344 hdr_idx_init(idx);
1345 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1346 state = HTTP_MSG_RQMETH;
1347 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1348 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1349
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1350 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1351 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1352
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1353 if (unlikely(*ptr == '\n'))
1354 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1355 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1356 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1357
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1358 http_msg_rqbefore_cr:
1359 case HTTP_MSG_RQBEFORE_CR:
1360 EXPECT_LF_HERE(ptr, http_msg_invalid);
1361 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1362 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1363
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1364 http_msg_rqmeth:
1365 case HTTP_MSG_RQMETH:
1366 case HTTP_MSG_RQMETH_SP:
1367 case HTTP_MSG_RQURI:
1368 case HTTP_MSG_RQURI_SP:
1369 case HTTP_MSG_RQVER:
1370 ptr = (char *)http_parse_reqline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1371 &buf->lr, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1372 if (unlikely(!ptr))
1373 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1374
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1375 /* we have a full request and we know that we have either a CR
1376 * or an LF at <ptr>.
1377 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1378 //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]1379 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1380
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1381 msg->sol = ptr;
1382 if (likely(*ptr == '\r'))
1383 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1384 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1385
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1386 http_msg_rqline_end:
1387 case HTTP_MSG_RQLINE_END:
1388 /* check for HTTP/0.9 request : no version information available.
1389 * msg->sol must point to the first of CR or LF.
1390 */
1391 if (unlikely(msg->sl.rq.v_l == 0))
1392 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1393
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1394 EXPECT_LF_HERE(ptr, http_msg_invalid);
1395 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1396 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1397
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1398 /*
1399 * Common states below
1400 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1401 http_msg_hdr_first:
1402 case HTTP_MSG_HDR_FIRST:
1403 msg->sol = ptr;
1404 if (likely(!HTTP_IS_CRLF(*ptr))) {
1405 goto http_msg_hdr_name;
1406 }
1407
1408 if (likely(*ptr == '\r'))
1409 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1410 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1411
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1412 http_msg_hdr_name:
1413 case HTTP_MSG_HDR_NAME:
1414 /* assumes msg->sol points to the first char */
1415 if (likely(HTTP_IS_TOKEN(*ptr)))
1416 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1417
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1418 if (likely(*ptr == ':')) {
1419 msg->col = ptr - buf->data;
1420 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
1421 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1422
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1423 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1424
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1425 http_msg_hdr_l1_sp:
1426 case HTTP_MSG_HDR_L1_SP:
1427 /* assumes msg->sol points to the first char and msg->col to the colon */
1428 if (likely(HTTP_IS_SPHT(*ptr)))
1429 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]1430
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1431 /* header value can be basically anything except CR/LF */
1432 msg->sov = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1433
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1434 if (likely(!HTTP_IS_CRLF(*ptr))) {
1435 goto http_msg_hdr_val;
1436 }
1437
1438 if (likely(*ptr == '\r'))
1439 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1440 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1441
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1442 http_msg_hdr_l1_lf:
1443 case HTTP_MSG_HDR_L1_LF:
1444 EXPECT_LF_HERE(ptr, http_msg_invalid);
1445 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]1446
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1447 http_msg_hdr_l1_lws:
1448 case HTTP_MSG_HDR_L1_LWS:
1449 if (likely(HTTP_IS_SPHT(*ptr))) {
1450 /* replace HT,CR,LF with spaces */
1451 for (; buf->data+msg->sov < ptr; msg->sov++)
1452 buf->data[msg->sov] = ' ';
1453 goto http_msg_hdr_l1_sp;
1454 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1455 /* we had a header consisting only in spaces ! */
1456 msg->eol = buf->data + msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1457 goto http_msg_complete_header;
1458
1459 http_msg_hdr_val:
1460 case HTTP_MSG_HDR_VAL:
1461 /* assumes msg->sol points to the first char, msg->col to the
1462 * colon, and msg->sov points to the first character of the
1463 * value.
1464 */
1465 if (likely(!HTTP_IS_CRLF(*ptr)))
1466 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1467
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1468 msg->eol = ptr;
1469 /* Note: we could also copy eol into ->eoh so that we have the
1470 * real header end in case it ends with lots of LWS, but is this
1471 * really needed ?
1472 */
1473 if (likely(*ptr == '\r'))
1474 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1475 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1476
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1477 http_msg_hdr_l2_lf:
1478 case HTTP_MSG_HDR_L2_LF:
1479 EXPECT_LF_HERE(ptr, http_msg_invalid);
1480 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]1481
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1482 http_msg_hdr_l2_lws:
1483 case HTTP_MSG_HDR_L2_LWS:
1484 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1485 /* LWS: replace HT,CR,LF with spaces */
1486 for (; msg->eol < ptr; msg->eol++)
1487 *msg->eol = ' ';
1488 goto http_msg_hdr_val;
1489 }
1490 http_msg_complete_header:
1491 /*
1492 * It was a new header, so the last one is finished.
1493 * Assumes msg->sol points to the first char, msg->col to the
1494 * colon, msg->sov points to the first character of the value
1495 * and msg->eol to the first CR or LF so we know how the line
1496 * ends. We insert last header into the index.
1497 */
1498 /*
1499 fprintf(stderr,"registering %-2d bytes : ", msg->eol - msg->sol);
1500 write(2, msg->sol, msg->eol-msg->sol);
1501 fprintf(stderr,"\n");
1502 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1503
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1504 if (unlikely(hdr_idx_add(msg->eol - msg->sol, *msg->eol == '\r',
1505 idx, idx->tail) < 0))
1506 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1507
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1508 msg->sol = ptr;
1509 if (likely(!HTTP_IS_CRLF(*ptr))) {
1510 goto http_msg_hdr_name;
1511 }
1512
1513 if (likely(*ptr == '\r'))
1514 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1515 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1516
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1517 http_msg_last_lf:
1518 case HTTP_MSG_LAST_LF:
1519 /* Assumes msg->sol points to the first of either CR or LF */
1520 EXPECT_LF_HERE(ptr, http_msg_invalid);
1521 ptr++;
1522 buf->lr = ptr;
1523 msg->eoh = msg->sol - buf->data;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1524 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1525 return;
1526#ifdef DEBUG_FULL
1527 default:
1528 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1529 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1530#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1531 }
1532 http_msg_ood:
1533 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1534 msg->msg_state = state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1535 buf->lr = ptr;
1536 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1537
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1538 http_msg_invalid:
1539 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1540 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1541 return;
1542}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1543
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1544/* This function performs all the processing enabled for the current request.
Willy Tarreauedcf6682008-11-30 23:15:34 +0100[diff] [blame]1545 * It returns 1 if the processing can continue on next analysers, or zero if it
1546 * needs more data, encounters an error, or wants to immediately abort the
1547 * request. It relies on buffers flags, and updates s->req->analysers. Its
1548 * behaviour is rather simple:
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]1549 * - all enabled analysers are called in turn from the lower to the higher
1550 * bit.
Willy Tarreauedcf6682008-11-30 23:15:34 +0100[diff] [blame]1551 * - the analyser must check for errors and timeouts, and react as expected.
1552 * It does not have to close anything upon error, the caller will.
1553 * - if the analyser does not have enough data, it must return 0without calling
1554 * other ones. It should also probably do a buffer_write_dis() to ensure
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]1555 * that unprocessed data will not be forwarded. But that probably depends on
Willy Tarreauedcf6682008-11-30 23:15:34 +0100[diff] [blame]1556 * the protocol.
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]1557 * - 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]1558 * analyser without using buffer_write_dis() (enabled by default).
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]1559 * - if an analyser thinks it has no added value anymore staying here, it must
1560 * reset its bit from the analysers flags in order not to be called anymore.
1561 *
1562 * In the future, analysers should be able to indicate that they want to be
1563 * called after XXX bytes have been received (or transfered), and the min of
1564 * all's wishes will be used to ring back (unless a special condition occurs).
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1565 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1566int http_process_request(struct session *s, struct buffer *req)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1567{
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1568
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]1569 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]1570 now_ms, __FUNCTION__,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1571 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]1572 req,
1573 req->rex, req->wex,
1574 req->flags,
1575 req->l,
1576 req->analysers);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1577
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1578 /*
1579 * We will parse the partial (or complete) lines.
1580 * We will check the request syntax, and also join multi-line
1581 * headers. An index of all the lines will be elaborated while
1582 * parsing.
1583 *
1584 * For the parsing, we use a 28 states FSM.
1585 *
1586 * Here is the information we currently have :
1587 * req->data + req->som = beginning of request
1588 * req->data + req->eoh = end of processed headers / start of current one
1589 * req->data + req->eol = end of current header or line (LF or CRLF)
1590 * req->lr = first non-visited byte
1591 * req->r = end of data
1592 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1593
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1594 int cur_idx;
1595 struct http_txn *txn = &s->txn;
1596 struct http_msg *msg = &txn->req;
1597 struct proxy *cur_proxy;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1598
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1599 if (likely(req->lr < req->r))
1600 http_msg_analyzer(req, msg, &txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1601
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1602 /* 1: we might have to print this header in debug mode */
1603 if (unlikely((global.mode & MODE_DEBUG) &&
1604 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
1605 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
1606 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1607
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1608 sol = req->data + msg->som;
1609 eol = sol + msg->sl.rq.l;
1610 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1611
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1612 sol += hdr_idx_first_pos(&txn->hdr_idx);
1613 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1614
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1615 while (cur_idx) {
1616 eol = sol + txn->hdr_idx.v[cur_idx].len;
1617 debug_hdr("clihdr", s, sol, eol);
1618 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
1619 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1620 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1621 }
1622
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1623
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1624 /*
1625 * Now we quickly check if we have found a full valid request.
1626 * If not so, we check the FD and buffer states before leaving.
1627 * A full request is indicated by the fact that we have seen
1628 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
1629 * requests are checked first.
1630 *
1631 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1632
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1633 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1634 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1635 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1636 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1637 if (unlikely(msg->msg_state == HTTP_MSG_ERROR))
1638 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1639
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1640 /* 1: Since we are in header mode, if there's no space
1641 * left for headers, we won't be able to free more
1642 * later, so the session will never terminate. We
1643 * must terminate it now.
1644 */
1645 if (unlikely(req->flags & BF_FULL)) {
1646 /* FIXME: check if URI is set and return Status
1647 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1648 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1649 goto return_bad_req;
1650 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1651
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1652 /* 2: have we encountered a read error ? */
1653 else if (req->flags & BF_READ_ERROR) {
1654 /* we cannot return any message on error */
1655 msg->msg_state = HTTP_MSG_ERROR;
1656 req->analysers = 0;
1657 s->fe->failed_req++;
1658 if (!(s->flags & SN_ERR_MASK))
1659 s->flags |= SN_ERR_CLICL;
1660 if (!(s->flags & SN_FINST_MASK))
1661 s->flags |= SN_FINST_R;
1662 return 0;
1663 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]1664
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1665 /* 3: has the read timeout expired ? */
1666 else if (req->flags & BF_READ_TIMEOUT || tick_is_expired(req->analyse_exp, now_ms)) {
1667 /* read timeout : give up with an error message. */
1668 txn->status = 408;
1669 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_408));
1670 msg->msg_state = HTTP_MSG_ERROR;
1671 req->analysers = 0;
1672 s->fe->failed_req++;
1673 if (!(s->flags & SN_ERR_MASK))
1674 s->flags |= SN_ERR_CLITO;
1675 if (!(s->flags & SN_FINST_MASK))
1676 s->flags |= SN_FINST_R;
1677 return 0;
1678 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1679
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1680 /* 4: have we encountered a close ? */
1681 else if (req->flags & BF_SHUTR) {
1682 txn->status = 400;
1683 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
1684 msg->msg_state = HTTP_MSG_ERROR;
1685 req->analysers = 0;
1686 s->fe->failed_req++;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1687
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1688 if (!(s->flags & SN_ERR_MASK))
1689 s->flags |= SN_ERR_CLICL;
1690 if (!(s->flags & SN_FINST_MASK))
1691 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]1692 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1693 }
1694
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1695 buffer_write_dis(req);
1696 /* just set the request timeout once at the beginning of the request */
1697 if (!tick_isset(req->analyse_exp))
1698 req->analyse_exp = tick_add_ifset(now_ms, s->fe->timeout.httpreq);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1699
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1700 /* we're not ready yet */
1701 return 0;
1702 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1703
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]1704
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1705 /****************************************************************
1706 * More interesting part now : we know that we have a complete *
1707 * request which at least looks like HTTP. We have an indicator *
1708 * of each header's length, so we can parse them quickly. *
1709 ****************************************************************/
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1710
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1711 req->analysers &= ~AN_REQ_HTTP_HDR;
1712 req->analyse_exp = TICK_ETERNITY;
1713
1714 /* ensure we keep this pointer to the beginning of the message */
1715 msg->sol = req->data + msg->som;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1716
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1717 /*
1718 * 1: identify the method
1719 */
1720 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
1721
1722 /* we can make use of server redirect on GET and HEAD */
1723 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
1724 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]1725
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1726 /*
1727 * 2: check if the URI matches the monitor_uri.
1728 * We have to do this for every request which gets in, because
1729 * the monitor-uri is defined by the frontend.
1730 */
1731 if (unlikely((s->fe->monitor_uri_len != 0) &&
1732 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
1733 !memcmp(&req->data[msg->sl.rq.u],
1734 s->fe->monitor_uri,
1735 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1736 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1737 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1738 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1739 struct acl_cond *cond;
1740 cur_proxy = s->fe;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1741
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1742 s->flags |= SN_MONITOR;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1743
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1744 /* Check if we want to fail this monitor request or not */
1745 list_for_each_entry(cond, &cur_proxy->mon_fail_cond, list) {
1746 int ret = acl_exec_cond(cond, cur_proxy, s, txn, ACL_DIR_REQ);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1747
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1748 ret = acl_pass(ret);
1749 if (cond->pol == ACL_COND_UNLESS)
1750 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1751
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1752 if (ret) {
1753 /* we fail this request, let's return 503 service unavail */
1754 txn->status = 503;
1755 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_503));
1756 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1757 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1758 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]1759
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1760 /* nothing to fail, let's reply normaly */
1761 txn->status = 200;
1762 stream_int_retnclose(req->prod, &http_200_chunk);
1763 goto return_prx_cond;
1764 }
1765
1766 /*
1767 * 3: Maybe we have to copy the original REQURI for the logs ?
1768 * Note: we cannot log anymore if the request has been
1769 * classified as invalid.
1770 */
1771 if (unlikely(s->logs.logwait & LW_REQ)) {
1772 /* we have a complete HTTP request that we must log */
1773 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
1774 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1775
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1776 if (urilen >= REQURI_LEN)
1777 urilen = REQURI_LEN - 1;
1778 memcpy(txn->uri, &req->data[msg->som], urilen);
1779 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1780
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1781 if (!(s->logs.logwait &= ~LW_REQ))
1782 s->do_log(s);
1783 } else {
1784 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1785 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1786 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1787
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1788 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
1789 if (unlikely(msg->sl.rq.v_l == 0)) {
1790 int delta;
1791 char *cur_end;
1792 msg->sol = req->data + msg->som;
1793 cur_end = msg->sol + msg->sl.rq.l;
1794 delta = 0;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1795
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1796 if (msg->sl.rq.u_l == 0) {
1797 /* if no URI was set, add "/" */
1798 delta = buffer_replace2(req, cur_end, cur_end, " /", 2);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1799 cur_end += delta;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1800 msg->eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1801 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1802 /* add HTTP version */
1803 delta = buffer_replace2(req, cur_end, cur_end, " HTTP/1.0\r\n", 11);
1804 msg->eoh += delta;
1805 cur_end += delta;
1806 cur_end = (char *)http_parse_reqline(msg, req->data,
1807 HTTP_MSG_RQMETH,
1808 msg->sol, cur_end + 1,
1809 NULL, NULL);
1810 if (unlikely(!cur_end))
1811 goto return_bad_req;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1812
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1813 /* we have a full HTTP/1.0 request now and we know that
1814 * we have either a CR or an LF at <ptr>.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1815 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1816 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1817 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1818
1819
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1820 /* 5: we may need to capture headers */
1821 if (unlikely((s->logs.logwait & LW_REQHDR) && s->fe->req_cap))
1822 capture_headers(req->data + msg->som, &txn->hdr_idx,
1823 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1824
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1825 /*
1826 * 6: we will have to evaluate the filters.
1827 * As opposed to version 1.2, now they will be evaluated in the
1828 * filters order and not in the header order. This means that
1829 * each filter has to be validated among all headers.
1830 *
1831 * We can now check whether we want to switch to another
1832 * backend, in which case we will re-check the backend's
1833 * filters and various options. In order to support 3-level
1834 * switching, here's how we should proceed :
1835 *
1836 * a) run be.
1837 * if (switch) then switch ->be to the new backend.
1838 * b) run be if (be != fe).
1839 * There cannot be any switch from there, so ->be cannot be
1840 * changed anymore.
1841 *
1842 * => filters always apply to ->be, then ->be may change.
1843 *
1844 * The response path will be able to apply either ->be, or
1845 * ->be then ->fe filters in order to match the reverse of
1846 * the forward sequence.
1847 */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1848
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1849 do {
1850 struct acl_cond *cond;
1851 struct redirect_rule *rule;
1852 struct proxy *rule_set = s->be;
1853 cur_proxy = s->be;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1854
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1855 /* first check whether we have some ACLs set to redirect this request */
1856 list_for_each_entry(rule, &cur_proxy->redirect_rules, list) {
1857 int ret = acl_exec_cond(rule->cond, cur_proxy, s, txn, ACL_DIR_REQ);
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1858
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1859 ret = acl_pass(ret);
1860 if (rule->cond->pol == ACL_COND_UNLESS)
1861 ret = !ret;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1862
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1863 if (ret) {
1864 struct chunk rdr = { trash, 0 };
1865 const char *msg_fmt;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1866
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1867 /* build redirect message */
1868 switch(rule->code) {
1869 case 303:
1870 rdr.len = strlen(HTTP_303);
1871 msg_fmt = HTTP_303;
1872 break;
1873 case 301:
1874 rdr.len = strlen(HTTP_301);
1875 msg_fmt = HTTP_301;
1876 break;
1877 case 302:
1878 default:
1879 rdr.len = strlen(HTTP_302);
1880 msg_fmt = HTTP_302;
1881 break;
1882 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1883
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1884 if (unlikely(rdr.len > sizeof(trash)))
1885 goto return_bad_req;
1886 memcpy(rdr.str, msg_fmt, rdr.len);
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1887
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1888 switch(rule->type) {
1889 case REDIRECT_TYPE_PREFIX: {
1890 const char *path;
1891 int pathlen;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1892
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1893 path = http_get_path(txn);
1894 /* build message using path */
1895 if (path) {
1896 pathlen = txn->req.sl.rq.u_l + (txn->req.sol+txn->req.sl.rq.u) - path;
1897 } else {
1898 path = "/";
1899 pathlen = 1;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1900 }
1901
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1902 if (rdr.len + rule->rdr_len + pathlen > sizeof(trash) - 4)
1903 goto return_bad_req;
1904
1905 /* add prefix */
1906 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
1907 rdr.len += rule->rdr_len;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1908
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1909 /* add path */
1910 memcpy(rdr.str + rdr.len, path, pathlen);
1911 rdr.len += pathlen;
1912 break;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1913 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1914 case REDIRECT_TYPE_LOCATION:
1915 default:
1916 if (rdr.len + rule->rdr_len > sizeof(trash) - 4)
1917 goto return_bad_req;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1918
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1919 /* add location */
1920 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
1921 rdr.len += rule->rdr_len;
1922 break;
1923 }
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1924
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1925 /* add end of headers */
1926 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
1927 rdr.len += 4;
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1928
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1929 txn->status = rule->code;
1930 /* let's log the request time */
1931 s->logs.tv_request = now;
1932 stream_int_retnclose(req->prod, &rdr);
1933 goto return_prx_cond;
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1934 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1935 }
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1936
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1937 /* first check whether we have some ACLs set to block this request */
1938 list_for_each_entry(cond, &cur_proxy->block_cond, list) {
1939 int ret = acl_exec_cond(cond, cur_proxy, s, txn, ACL_DIR_REQ);
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1940
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1941 ret = acl_pass(ret);
1942 if (cond->pol == ACL_COND_UNLESS)
1943 ret = !ret;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1944
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1945 if (ret) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1946 txn->status = 403;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1947 /* let's log the request time */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1948 s->logs.tv_request = now;
1949 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_403));
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1950 goto return_prx_cond;
1951 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1952 }
1953
1954 /* try headers filters */
1955 if (rule_set->req_exp != NULL) {
1956 if (apply_filters_to_request(s, req, rule_set->req_exp) < 0)
1957 goto return_bad_req;
1958 }
1959
1960 if (!(s->flags & SN_BE_ASSIGNED) && (s->be != cur_proxy)) {
1961 /* to ensure correct connection accounting on
1962 * the backend, we count the connection for the
1963 * one managing the queue.
1964 */
1965 s->be->beconn++;
1966 if (s->be->beconn > s->be->beconn_max)
1967 s->be->beconn_max = s->be->beconn;
1968 s->be->cum_beconn++;
1969 s->flags |= SN_BE_ASSIGNED;
1970 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1971
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1972 /* has the request been denied ? */
1973 if (txn->flags & TX_CLDENY) {
1974 /* no need to go further */
1975 txn->status = 403;
1976 /* let's log the request time */
1977 s->logs.tv_request = now;
1978 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_403));
1979 goto return_prx_cond;
1980 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1981
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1982 /* We might have to check for "Connection:" */
1983 if (((s->fe->options | s->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
1984 !(s->flags & SN_CONN_CLOSED)) {
1985 char *cur_ptr, *cur_end, *cur_next;
1986 int cur_idx, old_idx, delta, val;
1987 struct hdr_idx_elem *cur_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1988
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1989 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
1990 old_idx = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1991
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1992 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
1993 cur_hdr = &txn->hdr_idx.v[cur_idx];
1994 cur_ptr = cur_next;
1995 cur_end = cur_ptr + cur_hdr->len;
1996 cur_next = cur_end + cur_hdr->cr + 1;
1997
1998 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
1999 if (val) {
2000 /* 3 possibilities :
2001 * - we have already set Connection: close,
2002 * so we remove this line.
2003 * - we have not yet set Connection: close,
2004 * but this line indicates close. We leave
2005 * it untouched and set the flag.
2006 * - we have not yet set Connection: close,
2007 * and this line indicates non-close. We
2008 * replace it.
2009 */
2010 if (s->flags & SN_CONN_CLOSED) {
2011 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
2012 txn->req.eoh += delta;
2013 cur_next += delta;
2014 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
2015 txn->hdr_idx.used--;
2016 cur_hdr->len = 0;
2017 } else {
2018 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
2019 delta = buffer_replace2(req, cur_ptr + val, cur_end,
2020 "close", 5);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2021 cur_next += delta;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2022 cur_hdr->len += delta;
2023 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2024 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2025 s->flags |= SN_CONN_CLOSED;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2026 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2027 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2028 old_idx = cur_idx;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2029 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2030 }
2031 /* add request headers from the rule sets in the same order */
2032 for (cur_idx = 0; cur_idx < rule_set->nb_reqadd; cur_idx++) {
2033 if (unlikely(http_header_add_tail(req,
2034 &txn->req,
2035 &txn->hdr_idx,
2036 rule_set->req_add[cur_idx])) < 0)
2037 goto return_bad_req;
2038 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2039
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2040 /* check if stats URI was requested, and if an auth is needed */
2041 if (rule_set->uri_auth != NULL &&
2042 (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)) {
2043 /* we have to check the URI and auth for this request.
2044 * FIXME!!! that one is rather dangerous, we want to
2045 * make it follow standard rules (eg: clear req->analysers).
2046 */
2047 if (stats_check_uri_auth(s, rule_set)) {
2048 req->analysers = 0;
2049 return 0;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2050 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2051 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2052
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2053 /* now check whether we have some switching rules for this request */
2054 if (!(s->flags & SN_BE_ASSIGNED)) {
2055 struct switching_rule *rule;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2056
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2057 list_for_each_entry(rule, &cur_proxy->switching_rules, list) {
2058 int ret;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2059
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2060 ret = acl_exec_cond(rule->cond, cur_proxy, s, txn, ACL_DIR_REQ);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2061
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2062 ret = acl_pass(ret);
2063 if (rule->cond->pol == ACL_COND_UNLESS)
2064 ret = !ret;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2065
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2066 if (ret) {
2067 s->be = rule->be.backend;
2068 s->be->beconn++;
2069 if (s->be->beconn > s->be->beconn_max)
2070 s->be->beconn_max = s->be->beconn;
2071 s->be->cum_beconn++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[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;
2078 break;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2079 }
2080 }
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]2081 }
2082
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2083 if (!(s->flags & SN_BE_ASSIGNED) && cur_proxy->defbe.be) {
2084 /* No backend was set, but there was a default
2085 * backend set in the frontend, so we use it and
2086 * loop again.
2087 */
2088 s->be = cur_proxy->defbe.be;
2089 s->be->beconn++;
2090 if (s->be->beconn > s->be->beconn_max)
2091 s->be->beconn_max = s->be->beconn;
2092 s->be->cum_beconn++;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2093
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2094 /* assign new parameters to the session from the new backend */
2095 s->rep->rto = s->req->wto = s->be->timeout.server;
2096 s->req->cto = s->be->timeout.connect;
2097 s->conn_retries = s->be->conn_retries;
2098 s->flags |= SN_BE_ASSIGNED;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]2099 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2100 } while (s->be != cur_proxy); /* we loop only if s->be has changed */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2101
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2102 if (!(s->flags & SN_BE_ASSIGNED)) {
2103 /* To ensure correct connection accounting on
2104 * the backend, we count the connection for the
2105 * one managing the queue.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2106 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2107 s->be->beconn++;
2108 if (s->be->beconn > s->be->beconn_max)
2109 s->be->beconn_max = s->be->beconn;
2110 s->be->cum_beconn++;
2111 s->flags |= SN_BE_ASSIGNED;
2112 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2113
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2114 /*
2115 * Right now, we know that we have processed the entire headers
2116 * and that unwanted requests have been filtered out. We can do
2117 * whatever we want with the remaining request. Also, now we
2118 * may have separate values for ->fe, ->be.
2119 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2120
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2121 /*
2122 * If HTTP PROXY is set we simply get remote server address
2123 * parsing incoming request.
2124 */
2125 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
2126 url2sa(req->data + msg->sl.rq.u, msg->sl.rq.u_l, &s->srv_addr);
2127 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2128
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2129 /*
2130 * 7: the appsession cookie was looked up very early in 1.2,
2131 * so let's do the same now.
2132 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2133
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2134 /* It needs to look into the URI */
2135 if (s->be->appsession_name) {
2136 get_srv_from_appsession(s, &req->data[msg->som], msg->sl.rq.l);
2137 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2138
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2139 /*
2140 * 8: Now we can work with the cookies.
2141 * Note that doing so might move headers in the request, but
2142 * the fields will stay coherent and the URI will not move.
2143 * This should only be performed in the backend.
2144 */
2145 if ((s->be->cookie_name || s->be->appsession_name || s->be->capture_name)
2146 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
2147 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2148
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2149 /*
2150 * 9: add X-Forwarded-For if either the frontend or the backend
2151 * asks for it.
2152 */
2153 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
2154 if (s->cli_addr.ss_family == AF_INET) {
2155 /* Add an X-Forwarded-For header unless the source IP is
2156 * in the 'except' network range.
2157 */
2158 if ((!s->fe->except_mask.s_addr ||
2159 (((struct sockaddr_in *)&s->cli_addr)->sin_addr.s_addr & s->fe->except_mask.s_addr)
2160 != s->fe->except_net.s_addr) &&
2161 (!s->be->except_mask.s_addr ||
2162 (((struct sockaddr_in *)&s->cli_addr)->sin_addr.s_addr & s->be->except_mask.s_addr)
2163 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2164 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2165 unsigned char *pn;
2166 pn = (unsigned char *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2167
2168 /* Note: we rely on the backend to get the header name to be used for
2169 * x-forwarded-for, because the header is really meant for the backends.
2170 * However, if the backend did not specify any option, we have to rely
2171 * on the frontend's header name.
2172 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2173 if (s->be->fwdfor_hdr_len) {
2174 len = s->be->fwdfor_hdr_len;
2175 memcpy(trash, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2176 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2177 len = s->fe->fwdfor_hdr_len;
2178 memcpy(trash, s->fe->fwdfor_hdr_name, len);
2179 }
2180 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]2181
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2182 if (unlikely(http_header_add_tail2(req, &txn->req,
2183 &txn->hdr_idx, trash, len)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2184 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2185 }
2186 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2187 else if (s->cli_addr.ss_family == AF_INET6) {
2188 /* FIXME: for the sake of completeness, we should also support
2189 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2190 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2191 int len;
2192 char pn[INET6_ADDRSTRLEN];
2193 inet_ntop(AF_INET6,
2194 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
2195 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2196
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2197 /* Note: we rely on the backend to get the header name to be used for
2198 * x-forwarded-for, because the header is really meant for the backends.
2199 * However, if the backend did not specify any option, we have to rely
2200 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2201 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2202 if (s->be->fwdfor_hdr_len) {
2203 len = s->be->fwdfor_hdr_len;
2204 memcpy(trash, s->be->fwdfor_hdr_name, len);
2205 } else {
2206 len = s->fe->fwdfor_hdr_len;
2207 memcpy(trash, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2208 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2209 len += sprintf(trash + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2210
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2211 if (unlikely(http_header_add_tail2(req, &txn->req,
2212 &txn->hdr_idx, trash, len)) < 0)
2213 goto return_bad_req;
2214 }
2215 }
2216
2217 /*
2218 * 10: add "Connection: close" if needed and not yet set.
2219 * Note that we do not need to add it in case of HTTP/1.0.
2220 */
2221 if (!(s->flags & SN_CONN_CLOSED) &&
2222 ((s->fe->options | s->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) {
2223 if ((unlikely(msg->sl.rq.v_l != 8) ||
2224 unlikely(req->data[msg->som + msg->sl.rq.v + 7] != '0')) &&
2225 unlikely(http_header_add_tail2(req, &txn->req, &txn->hdr_idx,
2226 "Connection: close", 17)) < 0)
2227 goto return_bad_req;
2228 s->flags |= SN_CONN_CLOSED;
2229 }
2230 /* Before we switch to data, was assignment set in manage_client_side_cookie?
2231 * If not assigned, perhaps we are balancing on url_param, but this is a
2232 * POST; and the parameters are in the body, maybe scan there to find our server.
2233 * (unless headers overflowed the buffer?)
2234 */
2235 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
2236 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
2237 s->be->url_param_post_limit != 0 && !(req->flags & BF_FULL) &&
2238 memchr(msg->sol + msg->sl.rq.u, '?', msg->sl.rq.u_l) == NULL) {
2239 /* are there enough bytes here? total == l || r || rlim ?
2240 * len is unsigned, but eoh is int,
2241 * how many bytes of body have we received?
2242 * eoh is the first empty line of the header
2243 */
2244 /* already established CRLF or LF at eoh, move to start of message, find message length in buffer */
2245 unsigned long len = req->l - (msg->sol[msg->eoh] == '\r' ? msg->eoh + 2 : msg->eoh + 1);
2246
2247 /* If we have HTTP/1.1 and Expect: 100-continue, then abort.
2248 * We can't assume responsibility for the server's decision,
2249 * on this URI and header set. See rfc2616: 14.20, 8.2.3,
2250 * We also can't change our mind later, about which server to choose, so round robin.
2251 */
2252 if ((likely(msg->sl.rq.v_l == 8) && req->data[msg->som + msg->sl.rq.v + 7] == '1')) {
2253 struct hdr_ctx ctx;
2254 ctx.idx = 0;
2255 /* Expect is allowed in 1.1, look for it */
2256 http_find_header2("Expect", 6, msg->sol, &txn->hdr_idx, &ctx);
2257 if (ctx.idx != 0 &&
2258 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0))
2259 /* We can't reliablly stall and wait for data, because of
2260 * .NET clients that don't conform to rfc2616; so, no need for
2261 * the next block to check length expectations.
2262 * We could send 100 status back to the client, but then we need to
2263 * re-write headers, and send the message. And this isn't the right
2264 * place for that action.
2265 * TODO: support Expect elsewhere and delete this block.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2266 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2267 goto end_check_maybe_wait_for_body;
2268 }
2269
2270 if (likely(len > s->be->url_param_post_limit)) {
2271 /* nothing to do, we got enough */
2272 } else {
2273 /* limit implies we are supposed to need this many bytes
2274 * to find the parameter. Let's see how many bytes we can wait for.
2275 */
2276 long long hint = len;
2277 struct hdr_ctx ctx;
2278 ctx.idx = 0;
2279 http_find_header2("Transfer-Encoding", 17, msg->sol, &txn->hdr_idx, &ctx);
2280 if (ctx.idx && ctx.vlen >= 7 && strncasecmp(ctx.line+ctx.val, "chunked", 7) == 0) {
2281 buffer_write_dis(req);
2282 req->analysers |= AN_REQ_HTTP_BODY;
2283 }
2284 else {
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2285 ctx.idx = 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2286 http_find_header2("Content-Length", 14, msg->sol, &txn->hdr_idx, &ctx);
2287 /* now if we have a length, we'll take the hint */
2288 if (ctx.idx) {
2289 /* We have Content-Length */
2290 if (strl2llrc(ctx.line+ctx.val,ctx.vlen, &hint))
2291 hint = 0; /* parse failure, untrusted client */
2292 else {
2293 if (hint > 0)
2294 msg->hdr_content_len = hint;
2295 else
2296 hint = 0; /* bad client, sent negative length */
2297 }
2298 }
2299 /* but limited to what we care about, maybe we don't expect any entity data (hint == 0) */
2300 if (s->be->url_param_post_limit < hint)
2301 hint = s->be->url_param_post_limit;
2302 /* now do we really need to buffer more data? */
2303 if (len < hint) {
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]2304 buffer_write_dis(req);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2305 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2306 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2307 /* else... There are no body bytes to wait for */
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2308 }
2309 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2310 }
2311 end_check_maybe_wait_for_body:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2312
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2313 /*************************************************************
2314 * OK, that's finished for the headers. We have done what we *
2315 * could. Let's switch to the DATA state. *
2316 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2317
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2318 buffer_set_rlim(req, BUFSIZE); /* no more rewrite needed */
2319 s->logs.tv_request = now;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2320
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2321 /* When a connection is tarpitted, we use the tarpit timeout,
2322 * which may be the same as the connect timeout if unspecified.
2323 * If unset, then set it to zero because we really want it to
2324 * eventually expire. We build the tarpit as an analyser.
2325 */
2326 if (txn->flags & TX_CLTARPIT) {
2327 buffer_flush(s->req);
2328 /* flush the request so that we can drop the connection early
2329 * if the client closes first.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2330 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2331 buffer_write_dis(req);
2332 req->analysers |= AN_REQ_HTTP_TARPIT;
2333 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
2334 if (!req->analyse_exp)
2335 req->analyse_exp = now_ms;
2336 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2337
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2338 /* OK let's go on with the BODY now */
2339 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2340
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2341 return_bad_req: /* let's centralize all bad requests */
2342 txn->req.msg_state = HTTP_MSG_ERROR;
2343 txn->status = 400;
2344 req->analysers = 0;
2345 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
2346 s->fe->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2347
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2348 return_prx_cond:
2349 if (!(s->flags & SN_ERR_MASK))
2350 s->flags |= SN_ERR_PRXCOND;
2351 if (!(s->flags & SN_FINST_MASK))
2352 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2353 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2354}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2355
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2356/* This function is an analyser which processes the HTTP tarpit. It always
2357 * returns zero, at the beginning because it prevents any other processing
2358 * from occurring, and at the end because it terminates the request.
2359 */
2360int http_process_tarpit(struct session *s, struct buffer *req)
2361{
2362 struct http_txn *txn = &s->txn;
2363
2364 /* This connection is being tarpitted. The CLIENT side has
2365 * already set the connect expiration date to the right
2366 * timeout. We just have to check that the client is still
2367 * there and that the timeout has not expired.
2368 */
2369 if ((req->flags & (BF_SHUTR|BF_READ_ERROR)) == 0 &&
2370 !tick_is_expired(req->analyse_exp, now_ms))
2371 return 0;
2372
2373 /* We will set the queue timer to the time spent, just for
2374 * logging purposes. We fake a 500 server error, so that the
2375 * attacker will not suspect his connection has been tarpitted.
2376 * It will not cause trouble to the logs because we can exclude
2377 * the tarpitted connections by filtering on the 'PT' status flags.
2378 */
2379 trace_term(s, TT_HTTP_SRV_2);
2380 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
2381
2382 txn->status = 500;
2383 if (req->flags != BF_READ_ERROR)
2384 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_500));
2385
2386 req->analysers = 0;
2387 req->analyse_exp = TICK_ETERNITY;
2388
2389 s->fe->failed_req++;
2390 if (!(s->flags & SN_ERR_MASK))
2391 s->flags |= SN_ERR_PRXCOND;
2392 if (!(s->flags & SN_FINST_MASK))
2393 s->flags |= SN_FINST_T;
2394 return 0;
2395}
2396
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2397/* This function is an analyser which processes the HTTP request body. It looks
2398 * for parameters to be used for the load balancing algorithm (url_param). It
2399 * must only be called after the standard HTTP request processing has occurred,
2400 * because it expects the request to be parsed. It returns zero if it needs to
2401 * read more data, or 1 once it has completed its analysis.
2402 */
2403int http_process_request_body(struct session *s, struct buffer *req)
2404{
2405 struct http_msg *msg = &s->txn.req;
2406 unsigned long body = msg->sol[msg->eoh] == '\r' ? msg->eoh + 2 : msg->eoh + 1;
2407 long long limit = s->be->url_param_post_limit;
2408 struct hdr_ctx ctx;
2409
2410 /* We have to parse the HTTP request body to find any required data.
2411 * "balance url_param check_post" should have been the only way to get
2412 * into this. We were brought here after HTTP header analysis, so all
2413 * related structures are ready.
2414 */
2415
2416 ctx.idx = 0;
2417
2418 /* now if we have a length, we'll take the hint */
2419 http_find_header2("Transfer-Encoding", 17, msg->sol, &s->txn.hdr_idx, &ctx);
2420 if (ctx.idx && ctx.vlen >= 7 && strncasecmp(ctx.line+ctx.val, "chunked", 7) == 0) {
2421 unsigned int chunk = 0;
2422 while (body < req->l && !HTTP_IS_CRLF(msg->sol[body])) {
2423 char c = msg->sol[body];
2424 if (ishex(c)) {
2425 unsigned int hex = toupper(c) - '0';
2426 if (hex > 9)
2427 hex -= 'A' - '9' - 1;
2428 chunk = (chunk << 4) | hex;
2429 } else
2430 break;
2431 body++;
2432 }
2433 if (body + 2 >= req->l) /* we want CRLF too */
2434 goto http_body_end; /* end of buffer? data missing! */
2435
2436 if (memcmp(msg->sol+body, "\r\n", 2) != 0)
2437 goto http_body_end; /* chunked encoding len ends with CRLF, and we don't have it yet */
2438
2439 body += 2; // skip CRLF
2440
2441 /* if we support more then one chunk here, we have to do it again when assigning server
2442 * 1. how much entity data do we have? new var
2443 * 2. should save entity_start, entity_cursor, elen & rlen in req; so we don't repeat scanning here
2444 * 3. test if elen > limit, or set new limit to elen if 0 (end of entity found)
2445 */
2446
2447 if (chunk < limit)
2448 limit = chunk; /* only reading one chunk */
2449 } else {
2450 if (msg->hdr_content_len < limit)
2451 limit = msg->hdr_content_len;
2452 }
2453
2454 http_body_end:
2455 /* we leave once we know we have nothing left to do. This means that we have
2456 * enough bytes, or that we know we'll not get any more (buffer full, read
2457 * buffer closed).
2458 */
2459 if (req->l - body >= limit || /* enough bytes! */
2460 req->flags & (BF_FULL | BF_READ_ERROR | BF_SHUTR | BF_READ_TIMEOUT) ||
2461 tick_is_expired(req->analyse_exp, now_ms)) {
2462 /* The situation will not evolve, so let's give up on the analysis. */
2463 s->logs.tv_request = now; /* update the request timer to reflect full request */
2464 req->analysers &= ~AN_REQ_HTTP_BODY;
2465 req->analyse_exp = TICK_ETERNITY;
2466 return 1;
2467 }
2468 else {
2469 /* Not enough data. We'll re-use the http-request
2470 * timeout here. Ideally, we should set the timeout
2471 * relative to the accept() date. We just set the
2472 * request timeout once at the beginning of the
2473 * request.
2474 */
2475 buffer_write_dis(req);
2476 if (!tick_isset(req->analyse_exp))
2477 req->analyse_exp = tick_add_ifset(now_ms, s->fe->timeout.httpreq);
2478 return 0;
2479 }
2480}
2481
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2482/* This function performs all the processing enabled for the current response.
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2483 * It normally returns zero, but may return 1 if it absolutely needs to be
2484 * called again after other functions. It relies on buffers flags, and updates
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2485 * t->rep->analysers. It might make sense to explode it into several other
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2486 * functions. It works like process_request (see indications above).
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2487 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2488int process_response(struct session *t)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2489{
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2490 struct http_txn *txn = &t->txn;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2491 struct buffer *req = t->req;
2492 struct buffer *rep = t->rep;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2493
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2494 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]2495 now_ms, __FUNCTION__,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2496 t,
2497 rep,
2498 rep->rex, rep->wex,
2499 rep->flags,
2500 rep->l,
2501 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]2502
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2503 if (rep->analysers & AN_RTR_HTTP_HDR) { /* receiving server headers */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2504 /*
2505 * Now parse the partial (or complete) lines.
2506 * We will check the response syntax, and also join multi-line
2507 * headers. An index of all the lines will be elaborated while
2508 * parsing.
2509 *
2510 * For the parsing, we use a 28 states FSM.
2511 *
2512 * Here is the information we currently have :
Willy Tarreaue393fe22008-08-16 22:18:07 +0200[diff] [blame]2513 * rep->data + rep->som = beginning of response
2514 * rep->data + rep->eoh = end of processed headers / start of current one
2515 * rep->data + rep->eol = end of current header or line (LF or CRLF)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2516 * rep->lr = first non-visited byte
2517 * rep->r = end of data
2518 */
Willy Tarreau7f875f62008-08-11 17:35:01 +0200[diff] [blame]2519
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2520 int cur_idx;
2521 struct http_msg *msg = &txn->rsp;
2522 struct proxy *cur_proxy;
2523
2524 if (likely(rep->lr < rep->r))
2525 http_msg_analyzer(rep, msg, &txn->hdr_idx);
2526
2527 /* 1: we might have to print this header in debug mode */
2528 if (unlikely((global.mode & MODE_DEBUG) &&
2529 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
2530 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
2531 char *eol, *sol;
2532
2533 sol = rep->data + msg->som;
2534 eol = sol + msg->sl.rq.l;
2535 debug_hdr("srvrep", t, sol, eol);
2536
2537 sol += hdr_idx_first_pos(&txn->hdr_idx);
2538 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
2539
2540 while (cur_idx) {
2541 eol = sol + txn->hdr_idx.v[cur_idx].len;
2542 debug_hdr("srvhdr", t, sol, eol);
2543 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2544 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2545 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2546 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2547
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2548 /*
2549 * Now we quickly check if we have found a full valid response.
2550 * If not so, we check the FD and buffer states before leaving.
2551 * A full response is indicated by the fact that we have seen
2552 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
2553 * responses are checked first.
2554 *
2555 * Depending on whether the client is still there or not, we
2556 * may send an error response back or not. Note that normally
2557 * we should only check for HTTP status there, and check I/O
2558 * errors somewhere else.
2559 */
2560
2561 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2562 /* Invalid response */
2563 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
2564 hdr_response_bad:
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2565 //buffer_shutr(rep);
2566 //buffer_shutw(req);
2567 //fd_delete(req->cons->fd);
2568 //req->cons->state = SI_ST_CLO;
2569 buffer_shutr_now(rep);
2570 buffer_shutw_now(req);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2571 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2572 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2573 t->srv->failed_resp++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2574 //sess_change_server(t, NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2575 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2576 t->be->failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2577 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2578 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2579 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2580 if (!(t->flags & SN_ERR_MASK))
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2581 t->flags |= SN_ERR_PRXCOND;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2582 if (!(t->flags & SN_FINST_MASK))
2583 t->flags |= SN_FINST_H;
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]2584
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2585 //if (t->srv && may_dequeue_tasks(t->srv, t->be))
2586 // process_srv_queue(t->srv);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2587
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2588 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2589 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2590 /* too large response does not fit in buffer. */
2591 else if (rep->flags & BF_FULL) {
2592 goto hdr_response_bad;
2593 }
2594 /* read error */
2595 else if (rep->flags & BF_READ_ERROR) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2596 buffer_shutr_now(rep);
2597 buffer_shutw_now(req);
2598 //fd_delete(req->cons->fd);
2599 //req->cons->state = SI_ST_CLO;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2600 //if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2601 //t->srv->cur_sess--;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2602 //t->srv->failed_resp++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2603 //sess_change_server(t, NULL);
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2604 //}
2605 //t->be->failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2606 rep->analysers = 0;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2607 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2608 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2609 if (!(t->flags & SN_ERR_MASK))
2610 t->flags |= SN_ERR_SRVCL;
2611 if (!(t->flags & SN_FINST_MASK))
2612 t->flags |= SN_FINST_H;
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]2613
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2614 //if (t->srv && may_dequeue_tasks(t->srv, t->be))
2615 // process_srv_queue(t->srv);
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2616
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2617 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2618 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2619 /* read timeout : return a 504 to the client. */
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2620 else if (rep->flags & BF_READ_TIMEOUT) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2621 buffer_shutr_now(rep);
2622 buffer_shutw_now(req);
2623 //fd_delete(req->cons->fd);
2624 //req->cons->state = SI_ST_CLO;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2625 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2626 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2627 t->srv->failed_resp++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2628 //sess_change_server(t, NULL);
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2629 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2630 t->be->failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2631 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2632 txn->status = 504;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2633 stream_int_return(rep->cons, error_message(t, HTTP_ERR_504));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2634 if (!(t->flags & SN_ERR_MASK))
2635 t->flags |= SN_ERR_SRVTO;
2636 if (!(t->flags & SN_FINST_MASK))
2637 t->flags |= SN_FINST_H;
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]2638
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2639 //if (t->srv && may_dequeue_tasks(t->srv, t->be))
2640 // process_srv_queue(t->srv);
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2641 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2642 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2643 /* write error to client, or close from server */
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]2644 else if (rep->flags & (BF_WRITE_ERROR|BF_SHUTR)) {
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2645 buffer_shutr_now(rep);
2646 buffer_shutw_now(req);
2647 //fd_delete(req->cons->fd);
2648 //req->cons->state = SI_ST_CLO;
2649 if (t->srv) {
2650 //t->srv->cur_sess--;
2651 t->srv->failed_resp++;
2652 //sess_change_server(t, NULL);
2653 }
2654 t->be->failed_resp++;
2655 rep->analysers = 0;
2656 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2657 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2658 if (!(t->flags & SN_ERR_MASK))
2659 t->flags |= SN_ERR_SRVCL;
2660 if (!(t->flags & SN_FINST_MASK))
2661 t->flags |= SN_FINST_H;
2662
2663 //if (t->srv && may_dequeue_tasks(t->srv, t->be))
2664 // process_srv_queue(t->srv);
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2665
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2666 return 0;
2667 }
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]2668 buffer_write_dis(rep);
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2669 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2670 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2671
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2672
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2673 /*****************************************************************
2674 * More interesting part now : we know that we have a complete *
2675 * response which at least looks like HTTP. We have an indicator *
2676 * of each header's length, so we can parse them quickly. *
2677 ****************************************************************/
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2678
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2679 rep->analysers &= ~AN_RTR_HTTP_HDR;
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]2680
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2681 /* ensure we keep this pointer to the beginning of the message */
2682 msg->sol = rep->data + msg->som;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2683
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2684 /*
2685 * 1: get the status code and check for cacheability.
2686 */
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2687
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2688 t->logs.logwait &= ~LW_RESP;
2689 txn->status = strl2ui(rep->data + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2690
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2691 switch (txn->status) {
2692 case 200:
2693 case 203:
2694 case 206:
2695 case 300:
2696 case 301:
2697 case 410:
2698 /* RFC2616 @13.4:
2699 * "A response received with a status code of
2700 * 200, 203, 206, 300, 301 or 410 MAY be stored
2701 * by a cache (...) unless a cache-control
2702 * directive prohibits caching."
2703 *
2704 * RFC2616 @9.5: POST method :
2705 * "Responses to this method are not cacheable,
2706 * unless the response includes appropriate
2707 * Cache-Control or Expires header fields."
2708 */
2709 if (likely(txn->meth != HTTP_METH_POST) &&
2710 (t->be->options & (PR_O_CHK_CACHE|PR_O_COOK_NOC)))
2711 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
2712 break;
2713 default:
2714 break;
2715 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2716
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2717 /*
2718 * 2: we may need to capture headers
2719 */
2720 if (unlikely((t->logs.logwait & LW_RSPHDR) && t->fe->rsp_cap))
2721 capture_headers(rep->data + msg->som, &txn->hdr_idx,
2722 txn->rsp.cap, t->fe->rsp_cap);
2723
2724 /*
2725 * 3: we will have to evaluate the filters.
2726 * As opposed to version 1.2, now they will be evaluated in the
2727 * filters order and not in the header order. This means that
2728 * each filter has to be validated among all headers.
2729 *
2730 * Filters are tried with ->be first, then with ->fe if it is
2731 * different from ->be.
2732 */
2733
2734 t->flags &= ~SN_CONN_CLOSED; /* prepare for inspection */
2735
2736 cur_proxy = t->be;
2737 while (1) {
2738 struct proxy *rule_set = cur_proxy;
2739
2740 /* try headers filters */
2741 if (rule_set->rsp_exp != NULL) {
2742 if (apply_filters_to_response(t, rep, rule_set->rsp_exp) < 0) {
2743 return_bad_resp:
2744 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2745 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2746 t->srv->failed_resp++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2747 //sess_change_server(t, NULL);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2748 }
2749 cur_proxy->failed_resp++;
2750 return_srv_prx_502:
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2751 buffer_shutr_now(rep);
2752 buffer_shutw_now(req);
2753 //fd_delete(req->cons->fd);
2754 //req->cons->state = SI_ST_CLO;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2755 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2756 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2757 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2758 if (!(t->flags & SN_ERR_MASK))
2759 t->flags |= SN_ERR_PRXCOND;
2760 if (!(t->flags & SN_FINST_MASK))
2761 t->flags |= SN_FINST_H;
2762 /* We used to have a free connection slot. Since we'll never use it,
2763 * we have to inform the server that it may be used by another session.
2764 */
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2765 //if (t->srv && may_dequeue_tasks(t->srv, cur_proxy))
2766 // process_srv_queue(t->srv);
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2767 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2768 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2769 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2770
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2771 /* has the response been denied ? */
2772 if (txn->flags & TX_SVDENY) {
Willy Tarreauf899b942008-03-28 18:09:38 +0100[diff] [blame]2773 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2774 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2775 t->srv->failed_secu++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2776 //sess_change_server(t, NULL);
Willy Tarreauf899b942008-03-28 18:09:38 +0100[diff] [blame]2777 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2778 cur_proxy->denied_resp++;
2779 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]2780 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2781
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2782 /* We might have to check for "Connection:" */
2783 if (((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
2784 !(t->flags & SN_CONN_CLOSED)) {
2785 char *cur_ptr, *cur_end, *cur_next;
2786 int cur_idx, old_idx, delta, val;
2787 struct hdr_idx_elem *cur_hdr;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2788
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2789 cur_next = rep->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
2790 old_idx = 0;
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]2791
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2792 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
2793 cur_hdr = &txn->hdr_idx.v[cur_idx];
2794 cur_ptr = cur_next;
2795 cur_end = cur_ptr + cur_hdr->len;
2796 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2797
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2798 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
2799 if (val) {
2800 /* 3 possibilities :
2801 * - we have already set Connection: close,
2802 * so we remove this line.
2803 * - we have not yet set Connection: close,
2804 * but this line indicates close. We leave
2805 * it untouched and set the flag.
2806 * - we have not yet set Connection: close,
2807 * and this line indicates non-close. We
2808 * replace it.
2809 */
2810 if (t->flags & SN_CONN_CLOSED) {
2811 delta = buffer_replace2(rep, cur_ptr, cur_next, NULL, 0);
2812 txn->rsp.eoh += delta;
2813 cur_next += delta;
2814 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
2815 txn->hdr_idx.used--;
2816 cur_hdr->len = 0;
2817 } else {
2818 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
2819 delta = buffer_replace2(rep, cur_ptr + val, cur_end,
2820 "close", 5);
2821 cur_next += delta;
2822 cur_hdr->len += delta;
2823 txn->rsp.eoh += delta;
2824 }
2825 t->flags |= SN_CONN_CLOSED;
2826 }
2827 }
2828 old_idx = cur_idx;
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]2829 }
2830 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2831
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2832 /* add response headers from the rule sets in the same order */
2833 for (cur_idx = 0; cur_idx < rule_set->nb_rspadd; cur_idx++) {
2834 if (unlikely(http_header_add_tail(rep, &txn->rsp, &txn->hdr_idx,
2835 rule_set->rsp_add[cur_idx])) < 0)
2836 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2837 }
2838
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2839 /* check whether we're already working on the frontend */
2840 if (cur_proxy == t->fe)
2841 break;
2842 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2843 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2844
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2845 /*
2846 * 4: check for server cookie.
2847 */
2848 if (t->be->cookie_name || t->be->appsession_name || t->be->capture_name
2849 || (t->be->options & PR_O_CHK_CACHE))
2850 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2851
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2852
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2853 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2854 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2855 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2856 if ((t->be->options & (PR_O_COOK_NOC | PR_O_CHK_CACHE)) != 0)
2857 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2858
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2859 /*
2860 * 6: add server cookie in the response if needed
2861 */
2862 if ((t->srv) && !(t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_INS) &&
2863 (!(t->be->options & PR_O_COOK_POST) || (txn->meth == HTTP_METH_POST))) {
2864 int len;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2865
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2866 /* the server is known, it's not the one the client requested, we have to
2867 * insert a set-cookie here, except if we want to insert only on POST
2868 * requests and this one isn't. Note that servers which don't have cookies
2869 * (eg: some backup servers) will return a full cookie removal request.
2870 */
2871 len = sprintf(trash, "Set-Cookie: %s=%s; path=/",
2872 t->be->cookie_name,
2873 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]2874
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2875 if (t->be->cookie_domain)
2876 len += sprintf(trash+len, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2877
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2878 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
2879 trash, len)) < 0)
2880 goto return_bad_resp;
2881 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2882
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2883 /* Here, we will tell an eventual cache on the client side that we don't
2884 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
2885 * Some caches understand the correct form: 'no-cache="set-cookie"', but
2886 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
2887 */
2888 if ((t->be->options & PR_O_COOK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2889
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2890 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
2891
2892 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
2893 "Cache-control: private", 22)) < 0)
2894 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2895 }
2896 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2897
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2898
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2899 /*
2900 * 7: check if result will be cacheable with a cookie.
2901 * We'll block the response if security checks have caught
2902 * nasty things such as a cacheable cookie.
2903 */
2904 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) ==
2905 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) &&
2906 (t->be->options & PR_O_CHK_CACHE)) {
2907
2908 /* we're in presence of a cacheable response containing
2909 * a set-cookie header. We'll block it as requested by
2910 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2911 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2912 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2913 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2914 t->srv->failed_secu++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2915 //sess_change_server(t, NULL);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2916 }
2917 t->be->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2918
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2919 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
2920 t->be->id, t->srv?t->srv->id:"<dispatch>");
2921 send_log(t->be, LOG_ALERT,
2922 "Blocking cacheable cookie in response from instance %s, server %s.\n",
2923 t->be->id, t->srv?t->srv->id:"<dispatch>");
2924 goto return_srv_prx_502;
2925 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2926
2927 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2928 * 8: add "Connection: close" if needed and not yet set.
2929 * 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]2930 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2931 if (!(t->flags & SN_CONN_CLOSED) &&
2932 ((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) {
2933 if ((unlikely(msg->sl.st.v_l != 8) ||
2934 unlikely(req->data[msg->som + 7] != '0')) &&
2935 unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
2936 "Connection: close", 17)) < 0)
2937 goto return_bad_resp;
2938 t->flags |= SN_CONN_CLOSED;
2939 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2940
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2941 /*************************************************************
2942 * OK, that's finished for the headers. We have done what we *
2943 * could. Let's switch to the DATA state. *
2944 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2945
Willy Tarreaue393fe22008-08-16 22:18:07 +0200[diff] [blame]2946 buffer_set_rlim(rep, BUFSIZE); /* no more rewrite needed */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2947 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2948
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2949#ifdef CONFIG_HAP_TCPSPLICE
2950 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
2951 /* TCP splicing supported by both FE and BE */
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2952 tcp_splice_splicefd(rep->cons->fd, rep->prod->fd, 0);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2953 }
2954#endif
2955 /* if the user wants to log as soon as possible, without counting
2956 * bytes from the server, then this is the right moment. We have
2957 * to temporarily assign bytes_out to log what we currently have.
2958 */
2959 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
2960 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
2961 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2962 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2963 t->logs.bytes_out = 0;
2964 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2965
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2966 /* Note: we must not try to cheat by jumping directly to DATA,
2967 * otherwise we would not let the client side wake up.
2968 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2969
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2970 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2971 }
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2972
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2973 /* Note: eventhough nobody should set an unknown flag, clearing them right now will
2974 * probably reduce one day's debugging session.
2975 */
2976#ifdef DEBUG_DEV
2977 if (rep->analysers & ~(AN_RTR_HTTP_HDR)) {
2978 fprintf(stderr, "FIXME !!!! unknown analysers flags %s:%d = 0x%08X\n",
2979 __FILE__, __LINE__, rep->analysers);
2980 ABORT_NOW();
2981 }
2982#endif
2983 rep->analysers &= AN_RTR_HTTP_HDR;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2984 return 0;
2985}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2986
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2987/*
2988 * Produces data for the session <s> depending on its source. Expects to be
Willy Tarreau1ae3a052008-08-16 10:56:30 +0200[diff] [blame]2989 * called with client socket shut down on input. Right now, only statistics can
Willy Tarreau72b179a2008-08-28 16:01:32 +0200[diff] [blame]2990 * be produced. It stops by itself by unsetting the BF_HIJACK flag from the
2991 * 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]2992 * the buffer, or simply by letting an empty buffer upon return.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2993 */
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]2994void produce_content(struct session *s, struct buffer *rep)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2995{
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2996 if (s->data_source == DATA_SRC_NONE) {
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]2997 buffer_stop_hijack(rep);
2998 return;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2999 }
3000 else if (s->data_source == DATA_SRC_STATS) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3001 /* dump server statistics */
Willy Tarreau0a464892008-12-07 18:30:00 +0100[diff] [blame]3002 int ret = stats_dump_http(s, rep, s->be->uri_auth);
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3003 if (ret >= 0)
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3004 return;
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3005 /* -1 indicates an error */
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3006 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3007
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3008 /* unknown data source or internal error */
3009 s->txn.status = 500;
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3010 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_500));
Willy Tarreauf8533202008-08-16 14:55:08 +0200[diff] [blame]3011 trace_term(s, TT_HTTP_CNT_1);
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3012 if (!(s->flags & SN_ERR_MASK))
3013 s->flags |= SN_ERR_PRXCOND;
3014 if (!(s->flags & SN_FINST_MASK))
3015 s->flags |= SN_FINST_R;
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3016 buffer_stop_hijack(rep);
3017 return;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3018}
3019
3020
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3021/* Iterate the same filter through all request headers.
3022 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3023 * Since it can manage the switch to another backend, it updates the per-proxy
3024 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3025 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3026int 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]3027{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3028 char term;
3029 char *cur_ptr, *cur_end, *cur_next;
3030 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3031 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3032 struct hdr_idx_elem *cur_hdr;
3033 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]3034
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3035 last_hdr = 0;
3036
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3037 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3038 old_idx = 0;
3039
3040 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3041 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3042 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3043 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3044 (exp->action == ACT_ALLOW ||
3045 exp->action == ACT_DENY ||
3046 exp->action == ACT_TARPIT))
3047 return 0;
3048
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3049 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3050 if (!cur_idx)
3051 break;
3052
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3053 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3054 cur_ptr = cur_next;
3055 cur_end = cur_ptr + cur_hdr->len;
3056 cur_next = cur_end + cur_hdr->cr + 1;
3057
3058 /* Now we have one header between cur_ptr and cur_end,
3059 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3060 */
3061
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3062 /* The annoying part is that pattern matching needs
3063 * that we modify the contents to null-terminate all
3064 * strings before testing them.
3065 */
3066
3067 term = *cur_end;
3068 *cur_end = '\0';
3069
3070 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3071 switch (exp->action) {
3072 case ACT_SETBE:
3073 /* It is not possible to jump a second time.
3074 * FIXME: should we return an HTTP/500 here so that
3075 * the admin knows there's a problem ?
3076 */
3077 if (t->be != t->fe)
3078 break;
3079
3080 /* Swithing Proxy */
3081 t->be = (struct proxy *) exp->replace;
3082
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3083 /* right now, the backend switch is not overly complicated
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3084 * because we have associated req_cap and rsp_cap to the
3085 * frontend, and the beconn will be updated later.
3086 */
3087
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3088 t->rep->rto = t->req->wto = t->be->timeout.server;
3089 t->req->cto = t->be->timeout.connect;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3090 t->conn_retries = t->be->conn_retries;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3091 last_hdr = 1;
3092 break;
3093
3094 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3095 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3096 last_hdr = 1;
3097 break;
3098
3099 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3100 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3101 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3102 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3103 break;
3104
3105 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3106 txn->flags |= TX_CLTARPIT;
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_REPLACE:
3112 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3113 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3114 /* FIXME: if the user adds a newline in the replacement, the
3115 * index will not be recalculated for now, and the new line
3116 * will not be counted as a new header.
3117 */
3118
3119 cur_end += delta;
3120 cur_next += delta;
3121 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3122 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3123 break;
3124
3125 case ACT_REMOVE:
3126 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
3127 cur_next += delta;
3128
3129 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3130 txn->req.eoh += delta;
3131 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3132 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3133 cur_hdr->len = 0;
3134 cur_end = NULL; /* null-term has been rewritten */
3135 break;
3136
3137 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3138 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3139 if (cur_end)
3140 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3141
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3142 /* keep the link from this header to next one in case of later
3143 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3144 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3145 old_idx = cur_idx;
3146 }
3147 return 0;
3148}
3149
3150
3151/* Apply the filter to the request line.
3152 * Returns 0 if nothing has been done, 1 if the filter has been applied,
3153 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3154 * Since it can manage the switch to another backend, it updates the per-proxy
3155 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3156 */
3157int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
3158{
3159 char term;
3160 char *cur_ptr, *cur_end;
3161 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3162 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3163 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3164
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3165
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3166 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3167 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3168 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3169 (exp->action == ACT_ALLOW ||
3170 exp->action == ACT_DENY ||
3171 exp->action == ACT_TARPIT))
3172 return 0;
3173 else if (exp->action == ACT_REMOVE)
3174 return 0;
3175
3176 done = 0;
3177
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3178 cur_ptr = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3179 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3180
3181 /* Now we have the request line between cur_ptr and cur_end */
3182
3183 /* The annoying part is that pattern matching needs
3184 * that we modify the contents to null-terminate all
3185 * strings before testing them.
3186 */
3187
3188 term = *cur_end;
3189 *cur_end = '\0';
3190
3191 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3192 switch (exp->action) {
3193 case ACT_SETBE:
3194 /* It is not possible to jump a second time.
3195 * FIXME: should we return an HTTP/500 here so that
3196 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3197 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3198 if (t->be != t->fe)
3199 break;
3200
3201 /* Swithing Proxy */
3202 t->be = (struct proxy *) exp->replace;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3203
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3204 /* right now, the backend switch is not too much complicated
3205 * because we have associated req_cap and rsp_cap to the
3206 * frontend, and the beconn will be updated later.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3207 */
3208
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3209 t->rep->rto = t->req->wto = t->be->timeout.server;
3210 t->req->cto = t->be->timeout.connect;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3211 t->conn_retries = t->be->conn_retries;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3212 done = 1;
3213 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3214
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3215 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3216 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3217 done = 1;
3218 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3219
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3220 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3221 txn->flags |= TX_CLDENY;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3222 t->be->denied_req++;
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_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3227 txn->flags |= TX_CLTARPIT;
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_REPLACE:
3233 *cur_end = term; /* restore the string terminator */
3234 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3235 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3236 /* FIXME: if the user adds a newline in the replacement, the
3237 * index will not be recalculated for now, and the new line
3238 * will not be counted as a new header.
3239 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3240
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3241 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3242 cur_end += delta;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3243
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3244 txn->req.sol = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3245 cur_end = (char *)http_parse_reqline(&txn->req, req->data,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3246 HTTP_MSG_RQMETH,
3247 cur_ptr, cur_end + 1,
3248 NULL, NULL);
3249 if (unlikely(!cur_end))
3250 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3251
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3252 /* we have a full request and we know that we have either a CR
3253 * or an LF at <ptr>.
3254 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3255 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
3256 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]3257 /* there is no point trying this regex on headers */
3258 return 1;
3259 }
3260 }
3261 *cur_end = term; /* restore the string terminator */
3262 return done;
3263}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]3264
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3265
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3266
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3267/*
3268 * Apply all the req filters <exp> to all headers in buffer <req> of session <t>.
3269 * 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]3270 * unparsable request. Since it can manage the switch to another backend, it
3271 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3272 */
3273int apply_filters_to_request(struct session *t, struct buffer *req, struct hdr_exp *exp)
3274{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3275 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3276 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3277 while (exp && !(txn->flags & (TX_CLDENY|TX_CLTARPIT))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3278 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3279
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3280 /*
3281 * The interleaving of transformations and verdicts
3282 * makes it difficult to decide to continue or stop
3283 * the evaluation.
3284 */
3285
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3286 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3287 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
3288 exp->action == ACT_TARPIT || exp->action == ACT_PASS)) {
3289 exp = exp->next;
3290 continue;
3291 }
3292
3293 /* Apply the filter to the request line. */
3294 ret = apply_filter_to_req_line(t, req, exp);
3295 if (unlikely(ret < 0))
3296 return -1;
3297
3298 if (likely(ret == 0)) {
3299 /* The filter did not match the request, it can be
3300 * iterated through all headers.
3301 */
3302 apply_filter_to_req_headers(t, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3303 }
3304 exp = exp->next;
3305 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3306 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3307}
3308
3309
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3310
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3311/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3312 * Manage client-side cookie. It can impact performance by about 2% so it is
3313 * desirable to call it only when needed.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3314 */
3315void manage_client_side_cookies(struct session *t, struct buffer *req)
3316{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3317 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3318 char *p1, *p2, *p3, *p4;
3319 char *del_colon, *del_cookie, *colon;
3320 int app_cookies;
3321
3322 appsess *asession_temp = NULL;
3323 appsess local_asession;
3324
3325 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3326 int cur_idx, old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3327
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3328 /* Iterate through the headers.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3329 * we start with the start line.
3330 */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]3331 old_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3332 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3333
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3334 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3335 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3336 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3337
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3338 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3339 cur_ptr = cur_next;
3340 cur_end = cur_ptr + cur_hdr->len;
3341 cur_next = cur_end + cur_hdr->cr + 1;
3342
3343 /* We have one full header between cur_ptr and cur_end, and the
3344 * next header starts at cur_next. We're only interested in
3345 * "Cookie:" headers.
3346 */
3347
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3348 val = http_header_match2(cur_ptr, cur_end, "Cookie", 6);
3349 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3350 old_idx = cur_idx;
3351 continue;
3352 }
3353
3354 /* Now look for cookies. Conforming to RFC2109, we have to support
3355 * attributes whose name begin with a '$', and associate them with
3356 * the right cookie, if we want to delete this cookie.
3357 * So there are 3 cases for each cookie read :
3358 * 1) it's a special attribute, beginning with a '$' : ignore it.
3359 * 2) it's a server id cookie that we *MAY* want to delete : save
3360 * some pointers on it (last semi-colon, beginning of cookie...)
3361 * 3) it's an application cookie : we *MAY* have to delete a previous
3362 * "special" cookie.
3363 * At the end of loop, if a "special" cookie remains, we may have to
3364 * remove it. If no application cookie persists in the header, we
3365 * *MUST* delete it
3366 */
3367
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3368 colon = p1 = cur_ptr + val; /* first non-space char after 'Cookie:' */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3369
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3370 /* del_cookie == NULL => nothing to be deleted */
3371 del_colon = del_cookie = NULL;
3372 app_cookies = 0;
3373
3374 while (p1 < cur_end) {
3375 /* skip spaces and colons, but keep an eye on these ones */
3376 while (p1 < cur_end) {
3377 if (*p1 == ';' || *p1 == ',')
3378 colon = p1;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3379 else if (!isspace((unsigned char)*p1))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3380 break;
3381 p1++;
3382 }
3383
3384 if (p1 == cur_end)
3385 break;
3386
3387 /* p1 is at the beginning of the cookie name */
3388 p2 = p1;
3389 while (p2 < cur_end && *p2 != '=')
3390 p2++;
3391
3392 if (p2 == cur_end)
3393 break;
3394
3395 p3 = p2 + 1; /* skips the '=' sign */
3396 if (p3 == cur_end)
3397 break;
3398
3399 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3400 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';' && *p4 != ',')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3401 p4++;
3402
3403 /* here, we have the cookie name between p1 and p2,
3404 * and its value between p3 and p4.
3405 * we can process it :
3406 *
3407 * Cookie: NAME=VALUE;
3408 * | || || |
3409 * | || || +--> p4
3410 * | || |+-------> p3
3411 * | || +--------> p2
3412 * | |+------------> p1
3413 * | +-------------> colon
3414 * +--------------------> cur_ptr
3415 */
3416
3417 if (*p1 == '$') {
3418 /* skip this one */
3419 }
3420 else {
3421 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3422 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3423 txn->cli_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3424 (p4 - p1 >= t->fe->capture_namelen) &&
3425 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3426 int log_len = p4 - p1;
3427
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]3428 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3429 Alert("HTTP logging : out of memory.\n");
3430 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3431 if (log_len > t->fe->capture_len)
3432 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3433 memcpy(txn->cli_cookie, p1, log_len);
3434 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3435 }
3436 }
3437
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3438 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
3439 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3440 /* Cool... it's the right one */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3441 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3442 char *delim;
3443
3444 /* if we're in cookie prefix mode, we'll search the delimitor so that we
3445 * have the server ID betweek p3 and delim, and the original cookie between
3446 * delim+1 and p4. Otherwise, delim==p4 :
3447 *
3448 * Cookie: NAME=SRV~VALUE;
3449 * | || || | |
3450 * | || || | +--> p4
3451 * | || || +--------> delim
3452 * | || |+-----------> p3
3453 * | || +------------> p2
3454 * | |+----------------> p1
3455 * | +-----------------> colon
3456 * +------------------------> cur_ptr
3457 */
3458
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3459 if (t->be->options & PR_O_COOK_PFX) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3460 for (delim = p3; delim < p4; delim++)
3461 if (*delim == COOKIE_DELIM)
3462 break;
3463 }
3464 else
3465 delim = p4;
3466
3467
3468 /* Here, we'll look for the first running server which supports the cookie.
3469 * This allows to share a same cookie between several servers, for example
3470 * to dedicate backup servers to specific servers only.
3471 * However, to prevent clients from sticking to cookie-less backup server
3472 * when they have incidentely learned an empty cookie, we simply ignore
3473 * empty cookies and mark them as invalid.
3474 */
3475 if (delim == p3)
3476 srv = NULL;
3477
3478 while (srv) {
Willy Tarreau92f2ab12007-02-02 22:14:47 +0100[diff] [blame]3479 if (srv->cookie && (srv->cklen == delim - p3) &&
3480 !memcmp(p3, srv->cookie, delim - p3)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3481 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3482 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3483 txn->flags &= ~TX_CK_MASK;
3484 txn->flags |= TX_CK_VALID;
3485 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3486 t->srv = srv;
3487 break;
3488 } else {
3489 /* we found a server, but it's down */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3490 txn->flags &= ~TX_CK_MASK;
3491 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3492 }
3493 }
3494 srv = srv->next;
3495 }
3496
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3497 if (!srv && !(txn->flags & TX_CK_DOWN)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3498 /* no server matched this cookie */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3499 txn->flags &= ~TX_CK_MASK;
3500 txn->flags |= TX_CK_INVALID;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3501 }
3502
3503 /* depending on the cookie mode, we may have to either :
3504 * - delete the complete cookie if we're in insert+indirect mode, so that
3505 * the server never sees it ;
3506 * - remove the server id from the cookie value, and tag the cookie as an
3507 * application cookie so that it does not get accidentely removed later,
3508 * if we're in cookie prefix mode
3509 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3510 if ((t->be->options & PR_O_COOK_PFX) && (delim != p4)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3511 int delta; /* negative */
3512
3513 delta = buffer_replace2(req, p3, delim + 1, NULL, 0);
3514 p4 += delta;
3515 cur_end += delta;
3516 cur_next += delta;
3517 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3518 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3519
3520 del_cookie = del_colon = NULL;
3521 app_cookies++; /* protect the header from deletion */
3522 }
3523 else if (del_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3524 (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]3525 del_cookie = p1;
3526 del_colon = colon;
3527 }
3528 } else {
3529 /* now we know that we must keep this cookie since it's
3530 * not ours. But if we wanted to delete our cookie
3531 * earlier, we cannot remove the complete header, but we
3532 * can remove the previous block itself.
3533 */
3534 app_cookies++;
3535
3536 if (del_cookie != NULL) {
3537 int delta; /* negative */
3538
3539 delta = buffer_replace2(req, del_cookie, p1, NULL, 0);
3540 p4 += delta;
3541 cur_end += delta;
3542 cur_next += delta;
3543 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3544 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3545 del_cookie = del_colon = NULL;
3546 }
3547 }
3548
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3549 if ((t->be->appsession_name != NULL) &&
3550 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3551 /* first, let's see if the cookie is our appcookie*/
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3552
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3553 /* Cool... it's the right one */
3554
3555 asession_temp = &local_asession;
3556
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3557 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3558 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
3559 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
3560 return;
3561 }
3562
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3563 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
3564 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3565 asession_temp->serverid = NULL;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3566
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3567 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3568 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
3569 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3570 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3571 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3572 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3573 Alert("Not enough memory process_cli():asession:calloc().\n");
3574 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
3575 return;
3576 }
3577
3578 asession_temp->sessid = local_asession.sessid;
3579 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3580 asession_temp->request_count = 0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3581 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3582 } else {
3583 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3584 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3585 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3586 if (asession_temp->serverid == NULL) {
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3587 /* TODO redispatch request */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3588 Alert("Found Application Session without matching server.\n");
3589 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3590 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3591 while (srv) {
3592 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3593 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3594 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3595 txn->flags &= ~TX_CK_MASK;
3596 txn->flags |= TX_CK_VALID;
3597 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3598 t->srv = srv;
3599 break;
3600 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3601 txn->flags &= ~TX_CK_MASK;
3602 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3603 }
3604 }
3605 srv = srv->next;
3606 }/* end while(srv) */
3607 }/* end else if server == NULL */
3608
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]3609 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3610 asession_temp->request_count++;
3611#if defined(DEBUG_HASH)
3612 Alert("manage_client_side_cookies\n");
3613 appsession_hash_dump(&(t->be->htbl_proxy));
3614#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3615 }/* end if ((t->proxy->appsession_name != NULL) ... */
3616 }
3617
3618 /* we'll have to look for another cookie ... */
3619 p1 = p4;
3620 } /* while (p1 < cur_end) */
3621
3622 /* There's no more cookie on this line.
3623 * We may have marked the last one(s) for deletion.
3624 * We must do this now in two ways :
3625 * - if there is no app cookie, we simply delete the header ;
3626 * - if there are app cookies, we must delete the end of the
3627 * string properly, including the colon/semi-colon before
3628 * the cookie name.
3629 */
3630 if (del_cookie != NULL) {
3631 int delta;
3632 if (app_cookies) {
3633 delta = buffer_replace2(req, del_colon, cur_end, NULL, 0);
3634 cur_end = del_colon;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3635 cur_hdr->len += delta;
3636 } else {
3637 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3638
3639 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3640 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3641 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3642 cur_hdr->len = 0;
3643 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]3644 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3645 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3646 }
3647
3648 /* keep the link from this header to next one */
3649 old_idx = cur_idx;
3650 } /* end of cookie processing on this header */
3651}
3652
3653
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3654/* Iterate the same filter through all response headers contained in <rtr>.
3655 * Returns 1 if this filter can be stopped upon return, otherwise 0.
3656 */
3657int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
3658{
3659 char term;
3660 char *cur_ptr, *cur_end, *cur_next;
3661 int cur_idx, old_idx, last_hdr;
3662 struct http_txn *txn = &t->txn;
3663 struct hdr_idx_elem *cur_hdr;
3664 int len, delta;
3665
3666 last_hdr = 0;
3667
3668 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
3669 old_idx = 0;
3670
3671 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3672 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3673 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3674 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3675 (exp->action == ACT_ALLOW ||
3676 exp->action == ACT_DENY))
3677 return 0;
3678
3679 cur_idx = txn->hdr_idx.v[old_idx].next;
3680 if (!cur_idx)
3681 break;
3682
3683 cur_hdr = &txn->hdr_idx.v[cur_idx];
3684 cur_ptr = cur_next;
3685 cur_end = cur_ptr + cur_hdr->len;
3686 cur_next = cur_end + cur_hdr->cr + 1;
3687
3688 /* Now we have one header between cur_ptr and cur_end,
3689 * and the next header starts at cur_next.
3690 */
3691
3692 /* The annoying part is that pattern matching needs
3693 * that we modify the contents to null-terminate all
3694 * strings before testing them.
3695 */
3696
3697 term = *cur_end;
3698 *cur_end = '\0';
3699
3700 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3701 switch (exp->action) {
3702 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3703 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3704 last_hdr = 1;
3705 break;
3706
3707 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3708 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3709 last_hdr = 1;
3710 break;
3711
3712 case ACT_REPLACE:
3713 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3714 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
3715 /* FIXME: if the user adds a newline in the replacement, the
3716 * index will not be recalculated for now, and the new line
3717 * will not be counted as a new header.
3718 */
3719
3720 cur_end += delta;
3721 cur_next += delta;
3722 cur_hdr->len += delta;
3723 txn->rsp.eoh += delta;
3724 break;
3725
3726 case ACT_REMOVE:
3727 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
3728 cur_next += delta;
3729
3730 /* FIXME: this should be a separate function */
3731 txn->rsp.eoh += delta;
3732 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3733 txn->hdr_idx.used--;
3734 cur_hdr->len = 0;
3735 cur_end = NULL; /* null-term has been rewritten */
3736 break;
3737
3738 }
3739 }
3740 if (cur_end)
3741 *cur_end = term; /* restore the string terminator */
3742
3743 /* keep the link from this header to next one in case of later
3744 * removal of next header.
3745 */
3746 old_idx = cur_idx;
3747 }
3748 return 0;
3749}
3750
3751
3752/* Apply the filter to the status line in the response buffer <rtr>.
3753 * Returns 0 if nothing has been done, 1 if the filter has been applied,
3754 * or -1 if a replacement resulted in an invalid status line.
3755 */
3756int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
3757{
3758 char term;
3759 char *cur_ptr, *cur_end;
3760 int done;
3761 struct http_txn *txn = &t->txn;
3762 int len, delta;
3763
3764
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3765 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3766 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3767 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3768 (exp->action == ACT_ALLOW ||
3769 exp->action == ACT_DENY))
3770 return 0;
3771 else if (exp->action == ACT_REMOVE)
3772 return 0;
3773
3774 done = 0;
3775
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3776 cur_ptr = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3777 cur_end = cur_ptr + txn->rsp.sl.rq.l;
3778
3779 /* Now we have the status line between cur_ptr and cur_end */
3780
3781 /* The annoying part is that pattern matching needs
3782 * that we modify the contents to null-terminate all
3783 * strings before testing them.
3784 */
3785
3786 term = *cur_end;
3787 *cur_end = '\0';
3788
3789 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3790 switch (exp->action) {
3791 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3792 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3793 done = 1;
3794 break;
3795
3796 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3797 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3798 done = 1;
3799 break;
3800
3801 case ACT_REPLACE:
3802 *cur_end = term; /* restore the string terminator */
3803 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3804 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
3805 /* FIXME: if the user adds a newline in the replacement, the
3806 * index will not be recalculated for now, and the new line
3807 * will not be counted as a new header.
3808 */
3809
3810 txn->rsp.eoh += delta;
3811 cur_end += delta;
3812
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3813 txn->rsp.sol = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3814 cur_end = (char *)http_parse_stsline(&txn->rsp, rtr->data,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]3815 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3816 cur_ptr, cur_end + 1,
3817 NULL, NULL);
3818 if (unlikely(!cur_end))
3819 return -1;
3820
3821 /* we have a full respnse and we know that we have either a CR
3822 * or an LF at <ptr>.
3823 */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3824 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]3825 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.rq.l, *cur_end == '\r');
3826 /* there is no point trying this regex on headers */
3827 return 1;
3828 }
3829 }
3830 *cur_end = term; /* restore the string terminator */
3831 return done;
3832}
3833
3834
3835
3836/*
3837 * Apply all the resp filters <exp> to all headers in buffer <rtr> of session <t>.
3838 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
3839 * unparsable response.
3840 */
3841int apply_filters_to_response(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
3842{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3843 struct http_txn *txn = &t->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3844 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3845 while (exp && !(txn->flags & TX_SVDENY)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3846 int ret;
3847
3848 /*
3849 * The interleaving of transformations and verdicts
3850 * makes it difficult to decide to continue or stop
3851 * the evaluation.
3852 */
3853
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3854 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3855 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
3856 exp->action == ACT_PASS)) {
3857 exp = exp->next;
3858 continue;
3859 }
3860
3861 /* Apply the filter to the status line. */
3862 ret = apply_filter_to_sts_line(t, rtr, exp);
3863 if (unlikely(ret < 0))
3864 return -1;
3865
3866 if (likely(ret == 0)) {
3867 /* The filter did not match the response, it can be
3868 * iterated through all headers.
3869 */
3870 apply_filter_to_resp_headers(t, rtr, exp);
3871 }
3872 exp = exp->next;
3873 }
3874 return 0;
3875}
3876
3877
3878
3879/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3880 * Manage server-side cookies. It can impact performance by about 2% so it is
3881 * desirable to call it only when needed.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3882 */
3883void manage_server_side_cookies(struct session *t, struct buffer *rtr)
3884{
3885 struct http_txn *txn = &t->txn;
3886 char *p1, *p2, *p3, *p4;
3887
3888 appsess *asession_temp = NULL;
3889 appsess local_asession;
3890
3891 char *cur_ptr, *cur_end, *cur_next;
3892 int cur_idx, old_idx, delta;
3893
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3894 /* Iterate through the headers.
3895 * we start with the start line.
3896 */
3897 old_idx = 0;
3898 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
3899
3900 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
3901 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3902 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3903
3904 cur_hdr = &txn->hdr_idx.v[cur_idx];
3905 cur_ptr = cur_next;
3906 cur_end = cur_ptr + cur_hdr->len;
3907 cur_next = cur_end + cur_hdr->cr + 1;
3908
3909 /* We have one full header between cur_ptr and cur_end, and the
3910 * next header starts at cur_next. We're only interested in
3911 * "Cookie:" headers.
3912 */
3913
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3914 val = http_header_match2(cur_ptr, cur_end, "Set-Cookie", 10);
3915 if (!val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3916 old_idx = cur_idx;
3917 continue;
3918 }
3919
3920 /* OK, right now we know we have a set-cookie at cur_ptr */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3921 txn->flags |= TX_SCK_ANY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3922
3923
3924 /* maybe we only wanted to see if there was a set-cookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3925 if (t->be->cookie_name == NULL &&
3926 t->be->appsession_name == NULL &&
3927 t->be->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3928 return;
3929
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3930 p1 = cur_ptr + val; /* first non-space char after 'Set-Cookie:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3931
3932 while (p1 < cur_end) { /* in fact, we'll break after the first cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3933 if (p1 == cur_end || *p1 == ';') /* end of cookie */
3934 break;
3935
3936 /* p1 is at the beginning of the cookie name */
3937 p2 = p1;
3938
3939 while (p2 < cur_end && *p2 != '=' && *p2 != ';')
3940 p2++;
3941
3942 if (p2 == cur_end || *p2 == ';') /* next cookie */
3943 break;
3944
3945 p3 = p2 + 1; /* skip the '=' sign */
3946 if (p3 == cur_end)
3947 break;
3948
3949 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3950 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';')
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3951 p4++;
3952
3953 /* here, we have the cookie name between p1 and p2,
3954 * and its value between p3 and p4.
3955 * we can process it.
3956 */
3957
3958 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3959 if (t->be->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3960 txn->srv_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3961 (p4 - p1 >= t->be->capture_namelen) &&
3962 memcmp(p1, t->be->capture_name, t->be->capture_namelen) == 0) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3963 int log_len = p4 - p1;
3964
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]3965 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3966 Alert("HTTP logging : out of memory.\n");
3967 }
3968
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3969 if (log_len > t->be->capture_len)
3970 log_len = t->be->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3971 memcpy(txn->srv_cookie, p1, log_len);
3972 txn->srv_cookie[log_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3973 }
3974
3975 /* now check if we need to process it for persistence */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3976 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
3977 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3978 /* Cool... it's the right one */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3979 txn->flags |= TX_SCK_SEEN;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3980
3981 /* If the cookie is in insert mode on a known server, we'll delete
3982 * this occurrence because we'll insert another one later.
3983 * We'll delete it too if the "indirect" option is set and we're in
3984 * a direct access. */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3985 if (((t->srv) && (t->be->options & PR_O_COOK_INS)) ||
3986 ((t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_IND))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3987 /* this header must be deleted */
3988 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
3989 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3990 txn->hdr_idx.used--;
3991 cur_hdr->len = 0;
3992 cur_next += delta;
3993 txn->rsp.eoh += delta;
3994
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3995 txn->flags |= TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3996 }
3997 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3998 (t->be->options & PR_O_COOK_RW)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3999 /* replace bytes p3->p4 with the cookie name associated
4000 * with this server since we know it.
4001 */
4002 delta = buffer_replace2(rtr, p3, p4, t->srv->cookie, t->srv->cklen);
4003 cur_hdr->len += delta;
4004 cur_next += delta;
4005 txn->rsp.eoh += delta;
4006
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4007 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4008 }
4009 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4010 (t->be->options & PR_O_COOK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4011 /* insert the cookie name associated with this server
4012 * before existing cookie, and insert a delimitor between them..
4013 */
4014 delta = buffer_replace2(rtr, p3, p3, t->srv->cookie, t->srv->cklen + 1);
4015 cur_hdr->len += delta;
4016 cur_next += delta;
4017 txn->rsp.eoh += delta;
4018
4019 p3[t->srv->cklen] = COOKIE_DELIM;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4020 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4021 }
4022 }
4023 /* next, let's see if the cookie is our appcookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4024 else if ((t->be->appsession_name != NULL) &&
4025 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4026
4027 /* Cool... it's the right one */
4028
4029 size_t server_id_len = strlen(t->srv->id) + 1;
4030 asession_temp = &local_asession;
4031
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4032 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4033 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4034 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4035 return;
4036 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4037 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4038 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4039 asession_temp->serverid = NULL;
4040
4041 /* only do insert, if lookup fails */
Ryan Warnick6d0b1fa2008-02-17 11:24:35 +0100[diff] [blame]4042 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
4043 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4044 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4045 Alert("Not enough Memory process_srv():asession:calloc().\n");
4046 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
4047 return;
4048 }
4049 asession_temp->sessid = local_asession.sessid;
4050 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4051 asession_temp->request_count = 0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4052 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
4053 } else {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4054 /* free wasted memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4055 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4056 }
4057
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4058 if (asession_temp->serverid == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4059 if ((asession_temp->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4060 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4061 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4062 return;
4063 }
4064 asession_temp->serverid[0] = '\0';
4065 }
4066
4067 if (asession_temp->serverid[0] == '\0')
4068 memcpy(asession_temp->serverid, t->srv->id, server_id_len);
4069
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]4070 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4071 asession_temp->request_count++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4072#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4073 Alert("manage_server_side_cookies\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4074 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4075#endif
4076 }/* end if ((t->proxy->appsession_name != NULL) ... */
4077 break; /* we don't want to loop again since there cannot be another cookie on the same line */
4078 } /* we're now at the end of the cookie value */
4079
4080 /* keep the link from this header to next one */
4081 old_idx = cur_idx;
4082 } /* end of cookie processing on this header */
4083}
4084
4085
4086
4087/*
4088 * Check if response is cacheable or not. Updates t->flags.
4089 */
4090void check_response_for_cacheability(struct session *t, struct buffer *rtr)
4091{
4092 struct http_txn *txn = &t->txn;
4093 char *p1, *p2;
4094
4095 char *cur_ptr, *cur_end, *cur_next;
4096 int cur_idx;
4097
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]4098 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4099 return;
4100
4101 /* Iterate through the headers.
4102 * we start with the start line.
4103 */
4104 cur_idx = 0;
4105 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4106
4107 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4108 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4109 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4110
4111 cur_hdr = &txn->hdr_idx.v[cur_idx];
4112 cur_ptr = cur_next;
4113 cur_end = cur_ptr + cur_hdr->len;
4114 cur_next = cur_end + cur_hdr->cr + 1;
4115
4116 /* We have one full header between cur_ptr and cur_end, and the
4117 * next header starts at cur_next. We're only interested in
4118 * "Cookie:" headers.
4119 */
4120
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4121 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
4122 if (val) {
4123 if ((cur_end - (cur_ptr + val) >= 8) &&
4124 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
4125 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
4126 return;
4127 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4128 }
4129
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4130 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
4131 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4132 continue;
4133
4134 /* OK, right now we know we have a cache-control header at cur_ptr */
4135
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4136 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4137
4138 if (p1 >= cur_end) /* no more info */
4139 continue;
4140
4141 /* p1 is at the beginning of the value */
4142 p2 = p1;
4143
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4144 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4145 p2++;
4146
4147 /* we have a complete value between p1 and p2 */
4148 if (p2 < cur_end && *p2 == '=') {
4149 /* we have something of the form no-cache="set-cookie" */
4150 if ((cur_end - p1 >= 21) &&
4151 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
4152 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4153 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4154 continue;
4155 }
4156
4157 /* OK, so we know that either p2 points to the end of string or to a comma */
4158 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
4159 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
4160 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
4161 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4162 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4163 return;
4164 }
4165
4166 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4167 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4168 continue;
4169 }
4170 }
4171}
4172
4173
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4174/*
4175 * Try to retrieve a known appsession in the URI, then the associated server.
4176 * If the server is found, it's assigned to the session.
4177 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4178void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4179{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4180 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4181 appsess *asession_temp = NULL;
4182 appsess local_asession;
4183 char *request_line;
4184
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4185 if (t->be->appsession_name == NULL ||
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]4186 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST) ||
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4187 (request_line = memchr(begin, ';', len)) == NULL ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4188 ((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]4189 return;
4190
4191 /* skip ';' */
4192 request_line++;
4193
4194 /* look if we have a jsessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4195 if (strncasecmp(request_line, t->be->appsession_name, t->be->appsession_name_len) != 0)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4196 return;
4197
4198 /* skip jsessionid= */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4199 request_line += t->be->appsession_name_len + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4200
4201 /* First try if we already have an appsession */
4202 asession_temp = &local_asession;
4203
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4204 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4205 Alert("Not enough memory process_cli():asession_temp->sessid:calloc().\n");
4206 send_log(t->be, LOG_ALERT, "Not enough Memory process_cli():asession_temp->sessid:calloc().\n");
4207 return;
4208 }
4209
4210 /* Copy the sessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4211 memcpy(asession_temp->sessid, request_line, t->be->appsession_len);
4212 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4213 asession_temp->serverid = NULL;
4214
4215 /* only do insert, if lookup fails */
Ryan Warnick6d0b1fa2008-02-17 11:24:35 +0100[diff] [blame]4216 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
4217 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4218 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4219 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4220 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4221 Alert("Not enough memory process_cli():asession:calloc().\n");
4222 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4223 return;
4224 }
4225 asession_temp->sessid = local_asession.sessid;
4226 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4227 asession_temp->request_count=0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4228 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4229 }
4230 else {
4231 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4232 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4233 }
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4234
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]4235 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4236 asession_temp->request_count++;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4237
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4238#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4239 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4240 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4241#endif
4242 if (asession_temp->serverid == NULL) {
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4243 /* TODO redispatch request */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4244 Alert("Found Application Session without matching server.\n");
4245 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4246 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4247 while (srv) {
4248 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4249 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4250 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4251 txn->flags &= ~TX_CK_MASK;
4252 txn->flags |= TX_CK_VALID;
4253 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4254 t->srv = srv;
4255 break;
4256 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4257 txn->flags &= ~TX_CK_MASK;
4258 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4259 }
4260 }
4261 srv = srv->next;
4262 }
4263 }
4264}
4265
4266
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4267/*
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4268 * In a GET or HEAD request, check if the requested URI matches the stats uri
4269 * for the current backend, and if an authorization has been passed and is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4270 *
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4271 * 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]4272 * 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]4273 * produce_content() can be called to start sending data.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4274 *
4275 * Returns 1 if the session's state changes, otherwise 0.
4276 */
4277int stats_check_uri_auth(struct session *t, struct proxy *backend)
4278{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4279 struct http_txn *txn = &t->txn;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4280 struct uri_auth *uri_auth = backend->uri_auth;
4281 struct user_auth *user;
4282 int authenticated, cur_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4283 char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4284
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4285 memset(&t->data_ctx.stats, 0, sizeof(t->data_ctx.stats));
4286
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4287 /* check URI size */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4288 if (uri_auth->uri_len > txn->req.sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4289 return 0;
4290
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4291 h = t->req->data + txn->req.sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4292
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4293 /* the URI is in h */
4294 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4295 return 0;
4296
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4297 h += uri_auth->uri_len;
4298 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 3) {
4299 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4300 t->data_ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4301 break;
4302 }
4303 h++;
4304 }
4305
4306 if (uri_auth->refresh) {
4307 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4308 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 10) {
4309 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4310 t->data_ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4311 break;
4312 }
4313 h++;
4314 }
4315 }
4316
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]4317 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4318 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 4) {
4319 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4320 t->data_ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]4321 break;
4322 }
4323 h++;
4324 }
4325
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4326 t->data_ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
4327
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4328 /* we are in front of a interceptable URI. Let's check
4329 * if there's an authentication and if it's valid.
4330 */
4331 user = uri_auth->users;
4332 if (!user) {
4333 /* no user auth required, it's OK */
4334 authenticated = 1;
4335 } else {
4336 authenticated = 0;
4337
4338 /* a user list is defined, we have to check.
4339 * skip 21 chars for "Authorization: Basic ".
4340 */
4341
4342 /* FIXME: this should move to an earlier place */
4343 cur_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4344 h = t->req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
4345 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4346 int len = txn->hdr_idx.v[cur_idx].len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4347 if (len > 14 &&
4348 !strncasecmp("Authorization:", h, 14)) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4349 txn->auth_hdr.str = h;
4350 txn->auth_hdr.len = len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4351 break;
4352 }
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4353 h += len + txn->hdr_idx.v[cur_idx].cr + 1;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4354 }
4355
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4356 if (txn->auth_hdr.len < 21 ||
4357 memcmp(txn->auth_hdr.str + 14, " Basic ", 7))
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4358 user = NULL;
4359
4360 while (user) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4361 if ((txn->auth_hdr.len == user->user_len + 14 + 7)
4362 && !memcmp(txn->auth_hdr.str + 14 + 7,
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4363 user->user_pwd, user->user_len)) {
4364 authenticated = 1;
4365 break;
4366 }
4367 user = user->next;
4368 }
4369 }
4370
4371 if (!authenticated) {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4372 struct chunk msg;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4373
4374 /* no need to go further */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4375 msg.str = trash;
4376 msg.len = sprintf(trash, HTTP_401_fmt, uri_auth->auth_realm);
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4377 txn->status = 401;
Willy Tarreaudded32d2008-11-30 19:48:07 +0100[diff] [blame]4378 stream_int_retnclose(t->req->prod, &msg);
Willy Tarreauf8533202008-08-16 14:55:08 +0200[diff] [blame]4379 trace_term(t, TT_HTTP_URI_1);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]4380 t->req->analysers = 0;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4381 if (!(t->flags & SN_ERR_MASK))
4382 t->flags |= SN_ERR_PRXCOND;
4383 if (!(t->flags & SN_FINST_MASK))
4384 t->flags |= SN_FINST_R;
4385 return 1;
4386 }
4387
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4388 /* The request is valid, the user is authenticated. Let's start sending
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4389 * data.
4390 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]4391 buffer_write_dis(t->req);
Willy Tarreau72b179a2008-08-28 16:01:32 +0200[diff] [blame]4392 buffer_shutw_now(t->req);
4393 buffer_shutr_now(t->rep);
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]4394 t->logs.tv_request = now;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4395 t->data_source = DATA_SRC_STATS;
4396 t->data_state = DATA_ST_INIT;
Willy Tarreau91e99932008-06-30 07:51:00 +0200[diff] [blame]4397 t->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]4398 buffer_install_hijacker(t, t->rep, produce_content);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4399 return 1;
4400}
4401
4402
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4403/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4404 * Print a debug line with a header
4405 */
4406void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
4407{
4408 int len, max;
4409 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4410 dir, (unsigned short)t->req->prod->fd, (unsigned short)t->req->cons->fd);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4411 max = end - start;
4412 UBOUND(max, sizeof(trash) - len - 1);
4413 len += strlcpy2(trash + len, start, max + 1);
4414 trash[len++] = '\n';
4415 write(1, trash, len);
4416}
4417
4418
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4419/************************************************************************/
4420/* The code below is dedicated to ACL parsing and matching */
4421/************************************************************************/
4422
4423
4424
4425
4426/* 1. Check on METHOD
4427 * We use the pre-parsed method if it is known, and store its number as an
4428 * integer. If it is unknown, we use the pointer and the length.
4429 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4430static int acl_parse_meth(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4431{
4432 int len, meth;
4433
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4434 len = strlen(*text);
4435 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4436
4437 pattern->val.i = meth;
4438 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4439 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4440 if (!pattern->ptr.str)
4441 return 0;
4442 pattern->len = len;
4443 }
4444 return 1;
4445}
4446
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4447static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4448acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, int dir,
4449 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4450{
4451 int meth;
4452 struct http_txn *txn = l7;
4453
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4454 if (!txn)
4455 return 0;
4456
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4457 if (txn->req.msg_state != HTTP_MSG_BODY)
4458 return 0;
4459
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4460 meth = txn->meth;
4461 test->i = meth;
4462 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4463 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4464 /* ensure the indexes are not affected */
4465 return 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4466 test->len = txn->req.sl.rq.m_l;
4467 test->ptr = txn->req.sol;
4468 }
4469 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4470 return 1;
4471}
4472
4473static int acl_match_meth(struct acl_test *test, struct acl_pattern *pattern)
4474{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4475 int icase;
4476
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4477 if (test->i != pattern->val.i)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4478 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4479
4480 if (test->i != HTTP_METH_OTHER)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4481 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4482
4483 /* Other method, we must compare the strings */
4484 if (pattern->len != test->len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4485 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4486
4487 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
4488 if ((icase && strncasecmp(pattern->ptr.str, test->ptr, test->len) != 0) ||
4489 (!icase && strncmp(pattern->ptr.str, test->ptr, test->len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4490 return ACL_PAT_FAIL;
4491 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4492}
4493
4494/* 2. Check on Request/Status Version
4495 * We simply compare strings here.
4496 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4497static int acl_parse_ver(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4498{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4499 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4500 if (!pattern->ptr.str)
4501 return 0;
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4502 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4503 return 1;
4504}
4505
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4506static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4507acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, int dir,
4508 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4509{
4510 struct http_txn *txn = l7;
4511 char *ptr;
4512 int len;
4513
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4514 if (!txn)
4515 return 0;
4516
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4517 if (txn->req.msg_state != HTTP_MSG_BODY)
4518 return 0;
4519
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4520 len = txn->req.sl.rq.v_l;
4521 ptr = txn->req.sol + txn->req.sl.rq.v - txn->req.som;
4522
4523 while ((len-- > 0) && (*ptr++ != '/'));
4524 if (len <= 0)
4525 return 0;
4526
4527 test->ptr = ptr;
4528 test->len = len;
4529
4530 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4531 return 1;
4532}
4533
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4534static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4535acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, int dir,
4536 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4537{
4538 struct http_txn *txn = l7;
4539 char *ptr;
4540 int len;
4541
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4542 if (!txn)
4543 return 0;
4544
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4545 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4546 return 0;
4547
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4548 len = txn->rsp.sl.st.v_l;
4549 ptr = txn->rsp.sol;
4550
4551 while ((len-- > 0) && (*ptr++ != '/'));
4552 if (len <= 0)
4553 return 0;
4554
4555 test->ptr = ptr;
4556 test->len = len;
4557
4558 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4559 return 1;
4560}
4561
4562/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4563static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4564acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, int dir,
4565 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4566{
4567 struct http_txn *txn = l7;
4568 char *ptr;
4569 int len;
4570
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4571 if (!txn)
4572 return 0;
4573
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4574 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4575 return 0;
4576
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4577 len = txn->rsp.sl.st.c_l;
4578 ptr = txn->rsp.sol + txn->rsp.sl.st.c - txn->rsp.som;
4579
4580 test->i = __strl2ui(ptr, len);
4581 test->flags = ACL_TEST_F_VOL_1ST;
4582 return 1;
4583}
4584
4585/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4586static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4587acl_fetch_url(struct proxy *px, struct session *l4, void *l7, int dir,
4588 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4589{
4590 struct http_txn *txn = l7;
4591
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4592 if (!txn)
4593 return 0;
4594
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4595 if (txn->req.msg_state != HTTP_MSG_BODY)
4596 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4597
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4598 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4599 /* ensure the indexes are not affected */
4600 return 0;
4601
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4602 test->len = txn->req.sl.rq.u_l;
4603 test->ptr = txn->req.sol + txn->req.sl.rq.u;
4604
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]4605 /* we do not need to set READ_ONLY because the data is in a buffer */
4606 test->flags = ACL_TEST_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4607 return 1;
4608}
4609
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4610static int
4611acl_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, int dir,
4612 struct acl_expr *expr, struct acl_test *test)
4613{
4614 struct http_txn *txn = l7;
4615
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4616 if (!txn)
4617 return 0;
4618
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4619 if (txn->req.msg_state != HTTP_MSG_BODY)
4620 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4621
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4622 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4623 /* ensure the indexes are not affected */
4624 return 0;
4625
4626 /* Parse HTTP request */
4627 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
4628 test->ptr = (void *)&((struct sockaddr_in *)&l4->srv_addr)->sin_addr;
4629 test->i = AF_INET;
4630
4631 /*
4632 * If we are parsing url in frontend space, we prepare backend stage
4633 * to not parse again the same url ! optimization lazyness...
4634 */
4635 if (px->options & PR_O_HTTP_PROXY)
4636 l4->flags |= SN_ADDR_SET;
4637
4638 test->flags = ACL_TEST_F_READ_ONLY;
4639 return 1;
4640}
4641
4642static int
4643acl_fetch_url_port(struct proxy *px, struct session *l4, void *l7, int dir,
4644 struct acl_expr *expr, struct acl_test *test)
4645{
4646 struct http_txn *txn = l7;
4647
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4648 if (!txn)
4649 return 0;
4650
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4651 if (txn->req.msg_state != HTTP_MSG_BODY)
4652 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4653
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4654 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4655 /* ensure the indexes are not affected */
4656 return 0;
4657
4658 /* Same optimization as url_ip */
4659 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
4660 test->i = ntohs(((struct sockaddr_in *)&l4->srv_addr)->sin_port);
4661
4662 if (px->options & PR_O_HTTP_PROXY)
4663 l4->flags |= SN_ADDR_SET;
4664
4665 test->flags = ACL_TEST_F_READ_ONLY;
4666 return 1;
4667}
4668
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4669/* 5. Check on HTTP header. A pointer to the beginning of the value is returned.
4670 * This generic function is used by both acl_fetch_chdr() and acl_fetch_shdr().
4671 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4672static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4673acl_fetch_hdr(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4674 struct acl_expr *expr, struct acl_test *test)
4675{
4676 struct http_txn *txn = l7;
4677 struct hdr_idx *idx = &txn->hdr_idx;
4678 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4679
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4680 if (!txn)
4681 return 0;
4682
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4683 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
4684 /* search for header from the beginning */
4685 ctx->idx = 0;
4686
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4687 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
4688 test->flags |= ACL_TEST_F_FETCH_MORE;
4689 test->flags |= ACL_TEST_F_VOL_HDR;
4690 test->len = ctx->vlen;
4691 test->ptr = (char *)ctx->line + ctx->val;
4692 return 1;
4693 }
4694
4695 test->flags &= ~ACL_TEST_F_FETCH_MORE;
4696 test->flags |= ACL_TEST_F_VOL_HDR;
4697 return 0;
4698}
4699
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4700static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4701acl_fetch_chdr(struct proxy *px, struct session *l4, void *l7, int dir,
4702 struct acl_expr *expr, struct acl_test *test)
4703{
4704 struct http_txn *txn = l7;
4705
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4706 if (!txn)
4707 return 0;
4708
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4709 if (txn->req.msg_state != HTTP_MSG_BODY)
4710 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4711
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4712 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4713 /* ensure the indexes are not affected */
4714 return 0;
4715
4716 return acl_fetch_hdr(px, l4, txn, txn->req.sol, expr, test);
4717}
4718
4719static int
4720acl_fetch_shdr(struct proxy *px, struct session *l4, void *l7, int dir,
4721 struct acl_expr *expr, struct acl_test *test)
4722{
4723 struct http_txn *txn = l7;
4724
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4725 if (!txn)
4726 return 0;
4727
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4728 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4729 return 0;
4730
4731 return acl_fetch_hdr(px, l4, txn, txn->rsp.sol, expr, test);
4732}
4733
4734/* 6. Check on HTTP header count. The number of occurrences is returned.
4735 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
4736 */
4737static int
4738acl_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4739 struct acl_expr *expr, struct acl_test *test)
4740{
4741 struct http_txn *txn = l7;
4742 struct hdr_idx *idx = &txn->hdr_idx;
4743 struct hdr_ctx ctx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4744 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4745
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4746 if (!txn)
4747 return 0;
4748
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4749 ctx.idx = 0;
4750 cnt = 0;
4751 while (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, &ctx))
4752 cnt++;
4753
4754 test->i = cnt;
4755 test->flags = ACL_TEST_F_VOL_HDR;
4756 return 1;
4757}
4758
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4759static int
4760acl_fetch_chdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
4761 struct acl_expr *expr, struct acl_test *test)
4762{
4763 struct http_txn *txn = l7;
4764
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4765 if (!txn)
4766 return 0;
4767
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4768 if (txn->req.msg_state != HTTP_MSG_BODY)
4769 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4770
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4771 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4772 /* ensure the indexes are not affected */
4773 return 0;
4774
4775 return acl_fetch_hdr_cnt(px, l4, txn, txn->req.sol, expr, test);
4776}
4777
4778static int
4779acl_fetch_shdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
4780 struct acl_expr *expr, struct acl_test *test)
4781{
4782 struct http_txn *txn = l7;
4783
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4784 if (!txn)
4785 return 0;
4786
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4787 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4788 return 0;
4789
4790 return acl_fetch_hdr_cnt(px, l4, txn, txn->rsp.sol, expr, test);
4791}
4792
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4793/* 7. Check on HTTP header's integer value. The integer value is returned.
4794 * FIXME: the type is 'int', it may not be appropriate for everything.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4795 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4796 */
4797static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4798acl_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4799 struct acl_expr *expr, struct acl_test *test)
4800{
4801 struct http_txn *txn = l7;
4802 struct hdr_idx *idx = &txn->hdr_idx;
4803 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4804
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4805 if (!txn)
4806 return 0;
4807
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4808 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
4809 /* search for header from the beginning */
4810 ctx->idx = 0;
4811
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4812 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
4813 test->flags |= ACL_TEST_F_FETCH_MORE;
4814 test->flags |= ACL_TEST_F_VOL_HDR;
4815 test->i = strl2ic((char *)ctx->line + ctx->val, ctx->vlen);
4816 return 1;
4817 }
4818
4819 test->flags &= ~ACL_TEST_F_FETCH_MORE;
4820 test->flags |= ACL_TEST_F_VOL_HDR;
4821 return 0;
4822}
4823
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4824static int
4825acl_fetch_chdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
4826 struct acl_expr *expr, struct acl_test *test)
4827{
4828 struct http_txn *txn = l7;
4829
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4830 if (!txn)
4831 return 0;
4832
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4833 if (txn->req.msg_state != HTTP_MSG_BODY)
4834 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4835
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4836 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4837 /* ensure the indexes are not affected */
4838 return 0;
4839
4840 return acl_fetch_hdr_val(px, l4, txn, txn->req.sol, expr, test);
4841}
4842
4843static int
4844acl_fetch_shdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
4845 struct acl_expr *expr, struct acl_test *test)
4846{
4847 struct http_txn *txn = l7;
4848
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4849 if (!txn)
4850 return 0;
4851
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4852 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4853 return 0;
4854
4855 return acl_fetch_hdr_val(px, l4, txn, txn->rsp.sol, expr, test);
4856}
4857
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]4858/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
4859 * the first '/' after the possible hostname, and ends before the possible '?'.
4860 */
4861static int
4862acl_fetch_path(struct proxy *px, struct session *l4, void *l7, int dir,
4863 struct acl_expr *expr, struct acl_test *test)
4864{
4865 struct http_txn *txn = l7;
4866 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4867
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4868 if (!txn)
4869 return 0;
4870
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4871 if (txn->req.msg_state != HTTP_MSG_BODY)
4872 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4873
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4874 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4875 /* ensure the indexes are not affected */
4876 return 0;
4877
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4878 end = txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
4879 ptr = http_get_path(txn);
4880 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]4881 return 0;
4882
4883 /* OK, we got the '/' ! */
4884 test->ptr = ptr;
4885
4886 while (ptr < end && *ptr != '?')
4887 ptr++;
4888
4889 test->len = ptr - test->ptr;
4890
4891 /* we do not need to set READ_ONLY because the data is in a buffer */
4892 test->flags = ACL_TEST_F_VOL_1ST;
4893 return 1;
4894}
4895
4896
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4897
4898/************************************************************************/
4899/* All supported keywords must be declared here. */
4900/************************************************************************/
4901
4902/* Note: must not be declared <const> as its list will be overwritten */
4903static struct acl_kw_list acl_kws = {{ },{
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]4904 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT },
4905 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE },
4906 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE },
4907 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4908
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]4909 { "url", acl_parse_str, acl_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE },
4910 { "url_beg", acl_parse_str, acl_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
4911 { "url_end", acl_parse_str, acl_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE },
4912 { "url_sub", acl_parse_str, acl_fetch_url, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
4913 { "url_dir", acl_parse_str, acl_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
4914 { "url_dom", acl_parse_str, acl_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
4915 { "url_reg", acl_parse_reg, acl_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
4916 { "url_ip", acl_parse_ip, acl_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE },
4917 { "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]4918
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]4919 /* note: we should set hdr* to use ACL_USE_HDR_VOLATILE, and chdr* to use L7REQ_VOLATILE */
4920 { "hdr", acl_parse_str, acl_fetch_chdr, acl_match_str, ACL_USE_L7REQ_VOLATILE },
4921 { "hdr_reg", acl_parse_reg, acl_fetch_chdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
4922 { "hdr_beg", acl_parse_str, acl_fetch_chdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
4923 { "hdr_end", acl_parse_str, acl_fetch_chdr, acl_match_end, ACL_USE_L7REQ_VOLATILE },
4924 { "hdr_sub", acl_parse_str, acl_fetch_chdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
4925 { "hdr_dir", acl_parse_str, acl_fetch_chdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
4926 { "hdr_dom", acl_parse_str, acl_fetch_chdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
4927 { "hdr_cnt", acl_parse_int, acl_fetch_chdr_cnt,acl_match_int, ACL_USE_L7REQ_VOLATILE },
4928 { "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]4929
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]4930 { "shdr", acl_parse_str, acl_fetch_shdr, acl_match_str, ACL_USE_L7RTR_VOLATILE },
4931 { "shdr_reg", acl_parse_reg, acl_fetch_shdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE },
4932 { "shdr_beg", acl_parse_str, acl_fetch_shdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE },
4933 { "shdr_end", acl_parse_str, acl_fetch_shdr, acl_match_end, ACL_USE_L7RTR_VOLATILE },
4934 { "shdr_sub", acl_parse_str, acl_fetch_shdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE },
4935 { "shdr_dir", acl_parse_str, acl_fetch_shdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE },
4936 { "shdr_dom", acl_parse_str, acl_fetch_shdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE },
4937 { "shdr_cnt", acl_parse_int, acl_fetch_shdr_cnt,acl_match_int, ACL_USE_L7RTR_VOLATILE },
4938 { "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]4939
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]4940 { "path", acl_parse_str, acl_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE },
4941 { "path_reg", acl_parse_reg, acl_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
4942 { "path_beg", acl_parse_str, acl_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
4943 { "path_end", acl_parse_str, acl_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE },
4944 { "path_sub", acl_parse_str, acl_fetch_path, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
4945 { "path_dir", acl_parse_str, acl_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
4946 { "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]4947
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]4948 { NULL, NULL, NULL, NULL },
4949
4950#if 0
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4951 { "line", acl_parse_str, acl_fetch_line, acl_match_str },
4952 { "line_reg", acl_parse_reg, acl_fetch_line, acl_match_reg },
4953 { "line_beg", acl_parse_str, acl_fetch_line, acl_match_beg },
4954 { "line_end", acl_parse_str, acl_fetch_line, acl_match_end },
4955 { "line_sub", acl_parse_str, acl_fetch_line, acl_match_sub },
4956 { "line_dir", acl_parse_str, acl_fetch_line, acl_match_dir },
4957 { "line_dom", acl_parse_str, acl_fetch_line, acl_match_dom },
4958
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4959 { "cook", acl_parse_str, acl_fetch_cook, acl_match_str },
4960 { "cook_reg", acl_parse_reg, acl_fetch_cook, acl_match_reg },
4961 { "cook_beg", acl_parse_str, acl_fetch_cook, acl_match_beg },
4962 { "cook_end", acl_parse_str, acl_fetch_cook, acl_match_end },
4963 { "cook_sub", acl_parse_str, acl_fetch_cook, acl_match_sub },
4964 { "cook_dir", acl_parse_str, acl_fetch_cook, acl_match_dir },
4965 { "cook_dom", acl_parse_str, acl_fetch_cook, acl_match_dom },
4966 { "cook_pst", acl_parse_none, acl_fetch_cook, acl_match_pst },
4967
4968 { "auth_user", acl_parse_str, acl_fetch_user, acl_match_str },
4969 { "auth_regex", acl_parse_reg, acl_fetch_user, acl_match_reg },
4970 { "auth_clear", acl_parse_str, acl_fetch_auth, acl_match_str },
4971 { "auth_md5", acl_parse_str, acl_fetch_auth, acl_match_md5 },
4972 { NULL, NULL, NULL, NULL },
4973#endif
4974}};
4975
4976
4977__attribute__((constructor))
4978static void __http_protocol_init(void)
4979{
4980 acl_register_keywords(&acl_kws);
4981}
4982
4983
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4984/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4985 * Local variables:
4986 * c-indent-level: 8
4987 * c-basic-offset: 8
4988 * End:
4989 */