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git01.mediatek.com / haproxy / 3ffeba1f673120a6883c2fd38cf6b11850086234 / . / src / proto_http.c
blob: ecbc8872df84be533baefd9ce6993c926735be30 [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;
Willy Tarreau79da4692008-11-19 20:03:04 +0100[diff] [blame]1897 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
1898 int qs = 0;
1899 while (qs < pathlen) {
1900 if (path[qs] == '?') {
1901 pathlen = qs;
1902 break;
1903 }
1904 qs++;
1905 }
1906 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1907 } else {
1908 path = "/";
1909 pathlen = 1;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1910 }
1911
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1912 if (rdr.len + rule->rdr_len + pathlen > sizeof(trash) - 4)
1913 goto return_bad_req;
1914
Willy Tarreaufe651a52008-11-19 21:15:17 +0100[diff] [blame]1915 /* add prefix. Note that if prefix == "/", we don't want to
1916 * add anything, otherwise it makes it hard for the user to
1917 * configure a self-redirection.
1918 */
1919 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
1920 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
1921 rdr.len += rule->rdr_len;
1922 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1923
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1924 /* add path */
1925 memcpy(rdr.str + rdr.len, path, pathlen);
1926 rdr.len += pathlen;
1927 break;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1928 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1929 case REDIRECT_TYPE_LOCATION:
1930 default:
1931 if (rdr.len + rule->rdr_len > sizeof(trash) - 4)
1932 goto return_bad_req;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1933
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1934 /* add location */
1935 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
1936 rdr.len += rule->rdr_len;
1937 break;
1938 }
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1939
Willy Tarreau0140f252008-11-19 21:07:09 +0100[diff] [blame]1940 if (rule->cookie_len) {
1941 memcpy(rdr.str + rdr.len, "\r\nSet-Cookie: ", 14);
1942 rdr.len += 14;
1943 memcpy(rdr.str + rdr.len, rule->cookie_str, rule->cookie_len);
1944 rdr.len += rule->cookie_len;
1945 memcpy(rdr.str + rdr.len, "\r\n", 2);
1946 rdr.len += 2;
1947 }
1948
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1949 /* add end of headers */
1950 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
1951 rdr.len += 4;
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1952
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1953 txn->status = rule->code;
1954 /* let's log the request time */
1955 s->logs.tv_request = now;
1956 stream_int_retnclose(req->prod, &rdr);
1957 goto return_prx_cond;
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1958 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1959 }
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1960
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1961 /* first check whether we have some ACLs set to block this request */
1962 list_for_each_entry(cond, &cur_proxy->block_cond, list) {
1963 int ret = acl_exec_cond(cond, cur_proxy, s, txn, ACL_DIR_REQ);
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1964
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1965 ret = acl_pass(ret);
1966 if (cond->pol == ACL_COND_UNLESS)
1967 ret = !ret;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1968
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1969 if (ret) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1970 txn->status = 403;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1971 /* let's log the request time */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1972 s->logs.tv_request = now;
1973 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_403));
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1974 goto return_prx_cond;
1975 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1976 }
1977
1978 /* try headers filters */
1979 if (rule_set->req_exp != NULL) {
1980 if (apply_filters_to_request(s, req, rule_set->req_exp) < 0)
1981 goto return_bad_req;
1982 }
1983
1984 if (!(s->flags & SN_BE_ASSIGNED) && (s->be != cur_proxy)) {
1985 /* to ensure correct connection accounting on
1986 * the backend, we count the connection for the
1987 * one managing the queue.
1988 */
1989 s->be->beconn++;
1990 if (s->be->beconn > s->be->beconn_max)
1991 s->be->beconn_max = s->be->beconn;
1992 s->be->cum_beconn++;
1993 s->flags |= SN_BE_ASSIGNED;
1994 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1995
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1996 /* has the request been denied ? */
1997 if (txn->flags & TX_CLDENY) {
1998 /* no need to go further */
1999 txn->status = 403;
2000 /* let's log the request time */
2001 s->logs.tv_request = now;
2002 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_403));
2003 goto return_prx_cond;
2004 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2005
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2006 /* We might have to check for "Connection:" */
2007 if (((s->fe->options | s->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
2008 !(s->flags & SN_CONN_CLOSED)) {
2009 char *cur_ptr, *cur_end, *cur_next;
2010 int cur_idx, old_idx, delta, val;
2011 struct hdr_idx_elem *cur_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2012
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2013 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
2014 old_idx = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2015
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2016 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
2017 cur_hdr = &txn->hdr_idx.v[cur_idx];
2018 cur_ptr = cur_next;
2019 cur_end = cur_ptr + cur_hdr->len;
2020 cur_next = cur_end + cur_hdr->cr + 1;
2021
2022 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
2023 if (val) {
2024 /* 3 possibilities :
2025 * - we have already set Connection: close,
2026 * so we remove this line.
2027 * - we have not yet set Connection: close,
2028 * but this line indicates close. We leave
2029 * it untouched and set the flag.
2030 * - we have not yet set Connection: close,
2031 * and this line indicates non-close. We
2032 * replace it.
2033 */
2034 if (s->flags & SN_CONN_CLOSED) {
2035 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
2036 txn->req.eoh += delta;
2037 cur_next += delta;
2038 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
2039 txn->hdr_idx.used--;
2040 cur_hdr->len = 0;
2041 } else {
2042 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
2043 delta = buffer_replace2(req, cur_ptr + val, cur_end,
2044 "close", 5);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2045 cur_next += delta;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2046 cur_hdr->len += delta;
2047 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2048 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2049 s->flags |= SN_CONN_CLOSED;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2050 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2051 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2052 old_idx = cur_idx;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2053 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2054 }
2055 /* add request headers from the rule sets in the same order */
2056 for (cur_idx = 0; cur_idx < rule_set->nb_reqadd; cur_idx++) {
2057 if (unlikely(http_header_add_tail(req,
2058 &txn->req,
2059 &txn->hdr_idx,
2060 rule_set->req_add[cur_idx])) < 0)
2061 goto return_bad_req;
2062 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2063
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2064 /* check if stats URI was requested, and if an auth is needed */
2065 if (rule_set->uri_auth != NULL &&
2066 (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)) {
2067 /* we have to check the URI and auth for this request.
2068 * FIXME!!! that one is rather dangerous, we want to
2069 * make it follow standard rules (eg: clear req->analysers).
2070 */
2071 if (stats_check_uri_auth(s, rule_set)) {
2072 req->analysers = 0;
2073 return 0;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2074 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2075 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2076
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2077 /* now check whether we have some switching rules for this request */
2078 if (!(s->flags & SN_BE_ASSIGNED)) {
2079 struct switching_rule *rule;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2080
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2081 list_for_each_entry(rule, &cur_proxy->switching_rules, list) {
2082 int ret;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2083
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2084 ret = acl_exec_cond(rule->cond, cur_proxy, s, txn, ACL_DIR_REQ);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2085
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2086 ret = acl_pass(ret);
2087 if (rule->cond->pol == ACL_COND_UNLESS)
2088 ret = !ret;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2089
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2090 if (ret) {
2091 s->be = rule->be.backend;
2092 s->be->beconn++;
2093 if (s->be->beconn > s->be->beconn_max)
2094 s->be->beconn_max = s->be->beconn;
2095 s->be->cum_beconn++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]2096
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2097 /* assign new parameters to the session from the new backend */
2098 s->rep->rto = s->req->wto = s->be->timeout.server;
2099 s->req->cto = s->be->timeout.connect;
2100 s->conn_retries = s->be->conn_retries;
2101 s->flags |= SN_BE_ASSIGNED;
2102 break;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2103 }
2104 }
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]2105 }
2106
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2107 if (!(s->flags & SN_BE_ASSIGNED) && cur_proxy->defbe.be) {
2108 /* No backend was set, but there was a default
2109 * backend set in the frontend, so we use it and
2110 * loop again.
2111 */
2112 s->be = cur_proxy->defbe.be;
2113 s->be->beconn++;
2114 if (s->be->beconn > s->be->beconn_max)
2115 s->be->beconn_max = s->be->beconn;
2116 s->be->cum_beconn++;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2117
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2118 /* assign new parameters to the session from the new backend */
2119 s->rep->rto = s->req->wto = s->be->timeout.server;
2120 s->req->cto = s->be->timeout.connect;
2121 s->conn_retries = s->be->conn_retries;
2122 s->flags |= SN_BE_ASSIGNED;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]2123 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2124 } while (s->be != cur_proxy); /* we loop only if s->be has changed */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2125
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2126 if (!(s->flags & SN_BE_ASSIGNED)) {
2127 /* To ensure correct connection accounting on
2128 * the backend, we count the connection for the
2129 * one managing the queue.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2130 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2131 s->be->beconn++;
2132 if (s->be->beconn > s->be->beconn_max)
2133 s->be->beconn_max = s->be->beconn;
2134 s->be->cum_beconn++;
2135 s->flags |= SN_BE_ASSIGNED;
2136 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2137
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2138 /*
2139 * Right now, we know that we have processed the entire headers
2140 * and that unwanted requests have been filtered out. We can do
2141 * whatever we want with the remaining request. Also, now we
2142 * may have separate values for ->fe, ->be.
2143 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2144
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2145 /*
2146 * If HTTP PROXY is set we simply get remote server address
2147 * parsing incoming request.
2148 */
2149 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
2150 url2sa(req->data + msg->sl.rq.u, msg->sl.rq.u_l, &s->srv_addr);
2151 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2152
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2153 /*
2154 * 7: the appsession cookie was looked up very early in 1.2,
2155 * so let's do the same now.
2156 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2157
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2158 /* It needs to look into the URI */
2159 if (s->be->appsession_name) {
2160 get_srv_from_appsession(s, &req->data[msg->som], msg->sl.rq.l);
2161 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2162
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2163 /*
2164 * 8: Now we can work with the cookies.
2165 * Note that doing so might move headers in the request, but
2166 * the fields will stay coherent and the URI will not move.
2167 * This should only be performed in the backend.
2168 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]2169 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2170 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
2171 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2172
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2173 /*
2174 * 9: add X-Forwarded-For if either the frontend or the backend
2175 * asks for it.
2176 */
2177 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
2178 if (s->cli_addr.ss_family == AF_INET) {
2179 /* Add an X-Forwarded-For header unless the source IP is
2180 * in the 'except' network range.
2181 */
2182 if ((!s->fe->except_mask.s_addr ||
2183 (((struct sockaddr_in *)&s->cli_addr)->sin_addr.s_addr & s->fe->except_mask.s_addr)
2184 != s->fe->except_net.s_addr) &&
2185 (!s->be->except_mask.s_addr ||
2186 (((struct sockaddr_in *)&s->cli_addr)->sin_addr.s_addr & s->be->except_mask.s_addr)
2187 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2188 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2189 unsigned char *pn;
2190 pn = (unsigned char *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2191
2192 /* Note: we rely on the backend to get the header name to be used for
2193 * x-forwarded-for, because the header is really meant for the backends.
2194 * However, if the backend did not specify any option, we have to rely
2195 * on the frontend's header name.
2196 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2197 if (s->be->fwdfor_hdr_len) {
2198 len = s->be->fwdfor_hdr_len;
2199 memcpy(trash, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2200 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2201 len = s->fe->fwdfor_hdr_len;
2202 memcpy(trash, s->fe->fwdfor_hdr_name, len);
2203 }
2204 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]2205
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2206 if (unlikely(http_header_add_tail2(req, &txn->req,
2207 &txn->hdr_idx, trash, len)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2208 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2209 }
2210 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2211 else if (s->cli_addr.ss_family == AF_INET6) {
2212 /* FIXME: for the sake of completeness, we should also support
2213 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2214 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2215 int len;
2216 char pn[INET6_ADDRSTRLEN];
2217 inet_ntop(AF_INET6,
2218 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
2219 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2220
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2221 /* Note: we rely on the backend to get the header name to be used for
2222 * x-forwarded-for, because the header is really meant for the backends.
2223 * However, if the backend did not specify any option, we have to rely
2224 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2225 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2226 if (s->be->fwdfor_hdr_len) {
2227 len = s->be->fwdfor_hdr_len;
2228 memcpy(trash, s->be->fwdfor_hdr_name, len);
2229 } else {
2230 len = s->fe->fwdfor_hdr_len;
2231 memcpy(trash, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2232 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2233 len += sprintf(trash + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2234
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2235 if (unlikely(http_header_add_tail2(req, &txn->req,
2236 &txn->hdr_idx, trash, len)) < 0)
2237 goto return_bad_req;
2238 }
2239 }
2240
2241 /*
2242 * 10: add "Connection: close" if needed and not yet set.
2243 * Note that we do not need to add it in case of HTTP/1.0.
2244 */
2245 if (!(s->flags & SN_CONN_CLOSED) &&
2246 ((s->fe->options | s->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) {
2247 if ((unlikely(msg->sl.rq.v_l != 8) ||
2248 unlikely(req->data[msg->som + msg->sl.rq.v + 7] != '0')) &&
2249 unlikely(http_header_add_tail2(req, &txn->req, &txn->hdr_idx,
2250 "Connection: close", 17)) < 0)
2251 goto return_bad_req;
2252 s->flags |= SN_CONN_CLOSED;
2253 }
2254 /* Before we switch to data, was assignment set in manage_client_side_cookie?
2255 * If not assigned, perhaps we are balancing on url_param, but this is a
2256 * POST; and the parameters are in the body, maybe scan there to find our server.
2257 * (unless headers overflowed the buffer?)
2258 */
2259 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
2260 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
2261 s->be->url_param_post_limit != 0 && !(req->flags & BF_FULL) &&
2262 memchr(msg->sol + msg->sl.rq.u, '?', msg->sl.rq.u_l) == NULL) {
2263 /* are there enough bytes here? total == l || r || rlim ?
2264 * len is unsigned, but eoh is int,
2265 * how many bytes of body have we received?
2266 * eoh is the first empty line of the header
2267 */
2268 /* already established CRLF or LF at eoh, move to start of message, find message length in buffer */
2269 unsigned long len = req->l - (msg->sol[msg->eoh] == '\r' ? msg->eoh + 2 : msg->eoh + 1);
2270
2271 /* If we have HTTP/1.1 and Expect: 100-continue, then abort.
2272 * We can't assume responsibility for the server's decision,
2273 * on this URI and header set. See rfc2616: 14.20, 8.2.3,
2274 * We also can't change our mind later, about which server to choose, so round robin.
2275 */
2276 if ((likely(msg->sl.rq.v_l == 8) && req->data[msg->som + msg->sl.rq.v + 7] == '1')) {
2277 struct hdr_ctx ctx;
2278 ctx.idx = 0;
2279 /* Expect is allowed in 1.1, look for it */
2280 http_find_header2("Expect", 6, msg->sol, &txn->hdr_idx, &ctx);
2281 if (ctx.idx != 0 &&
2282 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0))
2283 /* We can't reliablly stall and wait for data, because of
2284 * .NET clients that don't conform to rfc2616; so, no need for
2285 * the next block to check length expectations.
2286 * We could send 100 status back to the client, but then we need to
2287 * re-write headers, and send the message. And this isn't the right
2288 * place for that action.
2289 * TODO: support Expect elsewhere and delete this block.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2290 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2291 goto end_check_maybe_wait_for_body;
2292 }
2293
2294 if (likely(len > s->be->url_param_post_limit)) {
2295 /* nothing to do, we got enough */
2296 } else {
2297 /* limit implies we are supposed to need this many bytes
2298 * to find the parameter. Let's see how many bytes we can wait for.
2299 */
2300 long long hint = len;
2301 struct hdr_ctx ctx;
2302 ctx.idx = 0;
2303 http_find_header2("Transfer-Encoding", 17, msg->sol, &txn->hdr_idx, &ctx);
2304 if (ctx.idx && ctx.vlen >= 7 && strncasecmp(ctx.line+ctx.val, "chunked", 7) == 0) {
2305 buffer_write_dis(req);
2306 req->analysers |= AN_REQ_HTTP_BODY;
2307 }
2308 else {
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2309 ctx.idx = 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2310 http_find_header2("Content-Length", 14, msg->sol, &txn->hdr_idx, &ctx);
2311 /* now if we have a length, we'll take the hint */
2312 if (ctx.idx) {
2313 /* We have Content-Length */
2314 if (strl2llrc(ctx.line+ctx.val,ctx.vlen, &hint))
2315 hint = 0; /* parse failure, untrusted client */
2316 else {
2317 if (hint > 0)
2318 msg->hdr_content_len = hint;
2319 else
2320 hint = 0; /* bad client, sent negative length */
2321 }
2322 }
2323 /* but limited to what we care about, maybe we don't expect any entity data (hint == 0) */
2324 if (s->be->url_param_post_limit < hint)
2325 hint = s->be->url_param_post_limit;
2326 /* now do we really need to buffer more data? */
2327 if (len < hint) {
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]2328 buffer_write_dis(req);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2329 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2330 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2331 /* else... There are no body bytes to wait for */
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2332 }
2333 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2334 }
2335 end_check_maybe_wait_for_body:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2336
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2337 /*************************************************************
2338 * OK, that's finished for the headers. We have done what we *
2339 * could. Let's switch to the DATA state. *
2340 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2341
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2342 buffer_set_rlim(req, BUFSIZE); /* no more rewrite needed */
2343 s->logs.tv_request = now;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2344
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2345 /* When a connection is tarpitted, we use the tarpit timeout,
2346 * which may be the same as the connect timeout if unspecified.
2347 * If unset, then set it to zero because we really want it to
2348 * eventually expire. We build the tarpit as an analyser.
2349 */
2350 if (txn->flags & TX_CLTARPIT) {
2351 buffer_flush(s->req);
2352 /* flush the request so that we can drop the connection early
2353 * if the client closes first.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2354 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2355 buffer_write_dis(req);
2356 req->analysers |= AN_REQ_HTTP_TARPIT;
2357 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
2358 if (!req->analyse_exp)
2359 req->analyse_exp = now_ms;
2360 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2361
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2362 /* OK let's go on with the BODY now */
2363 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2364
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2365 return_bad_req: /* let's centralize all bad requests */
2366 txn->req.msg_state = HTTP_MSG_ERROR;
2367 txn->status = 400;
2368 req->analysers = 0;
2369 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
2370 s->fe->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2371
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2372 return_prx_cond:
2373 if (!(s->flags & SN_ERR_MASK))
2374 s->flags |= SN_ERR_PRXCOND;
2375 if (!(s->flags & SN_FINST_MASK))
2376 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2377 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2378}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2379
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2380/* This function is an analyser which processes the HTTP tarpit. It always
2381 * returns zero, at the beginning because it prevents any other processing
2382 * from occurring, and at the end because it terminates the request.
2383 */
2384int http_process_tarpit(struct session *s, struct buffer *req)
2385{
2386 struct http_txn *txn = &s->txn;
2387
2388 /* This connection is being tarpitted. The CLIENT side has
2389 * already set the connect expiration date to the right
2390 * timeout. We just have to check that the client is still
2391 * there and that the timeout has not expired.
2392 */
2393 if ((req->flags & (BF_SHUTR|BF_READ_ERROR)) == 0 &&
2394 !tick_is_expired(req->analyse_exp, now_ms))
2395 return 0;
2396
2397 /* We will set the queue timer to the time spent, just for
2398 * logging purposes. We fake a 500 server error, so that the
2399 * attacker will not suspect his connection has been tarpitted.
2400 * It will not cause trouble to the logs because we can exclude
2401 * the tarpitted connections by filtering on the 'PT' status flags.
2402 */
2403 trace_term(s, TT_HTTP_SRV_2);
2404 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
2405
2406 txn->status = 500;
2407 if (req->flags != BF_READ_ERROR)
2408 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_500));
2409
2410 req->analysers = 0;
2411 req->analyse_exp = TICK_ETERNITY;
2412
2413 s->fe->failed_req++;
2414 if (!(s->flags & SN_ERR_MASK))
2415 s->flags |= SN_ERR_PRXCOND;
2416 if (!(s->flags & SN_FINST_MASK))
2417 s->flags |= SN_FINST_T;
2418 return 0;
2419}
2420
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2421/* This function is an analyser which processes the HTTP request body. It looks
2422 * for parameters to be used for the load balancing algorithm (url_param). It
2423 * must only be called after the standard HTTP request processing has occurred,
2424 * because it expects the request to be parsed. It returns zero if it needs to
2425 * read more data, or 1 once it has completed its analysis.
2426 */
2427int http_process_request_body(struct session *s, struct buffer *req)
2428{
2429 struct http_msg *msg = &s->txn.req;
2430 unsigned long body = msg->sol[msg->eoh] == '\r' ? msg->eoh + 2 : msg->eoh + 1;
2431 long long limit = s->be->url_param_post_limit;
2432 struct hdr_ctx ctx;
2433
2434 /* We have to parse the HTTP request body to find any required data.
2435 * "balance url_param check_post" should have been the only way to get
2436 * into this. We were brought here after HTTP header analysis, so all
2437 * related structures are ready.
2438 */
2439
2440 ctx.idx = 0;
2441
2442 /* now if we have a length, we'll take the hint */
2443 http_find_header2("Transfer-Encoding", 17, msg->sol, &s->txn.hdr_idx, &ctx);
2444 if (ctx.idx && ctx.vlen >= 7 && strncasecmp(ctx.line+ctx.val, "chunked", 7) == 0) {
2445 unsigned int chunk = 0;
2446 while (body < req->l && !HTTP_IS_CRLF(msg->sol[body])) {
2447 char c = msg->sol[body];
2448 if (ishex(c)) {
2449 unsigned int hex = toupper(c) - '0';
2450 if (hex > 9)
2451 hex -= 'A' - '9' - 1;
2452 chunk = (chunk << 4) | hex;
2453 } else
2454 break;
2455 body++;
2456 }
2457 if (body + 2 >= req->l) /* we want CRLF too */
2458 goto http_body_end; /* end of buffer? data missing! */
2459
2460 if (memcmp(msg->sol+body, "\r\n", 2) != 0)
2461 goto http_body_end; /* chunked encoding len ends with CRLF, and we don't have it yet */
2462
2463 body += 2; // skip CRLF
2464
2465 /* if we support more then one chunk here, we have to do it again when assigning server
2466 * 1. how much entity data do we have? new var
2467 * 2. should save entity_start, entity_cursor, elen & rlen in req; so we don't repeat scanning here
2468 * 3. test if elen > limit, or set new limit to elen if 0 (end of entity found)
2469 */
2470
2471 if (chunk < limit)
2472 limit = chunk; /* only reading one chunk */
2473 } else {
2474 if (msg->hdr_content_len < limit)
2475 limit = msg->hdr_content_len;
2476 }
2477
2478 http_body_end:
2479 /* we leave once we know we have nothing left to do. This means that we have
2480 * enough bytes, or that we know we'll not get any more (buffer full, read
2481 * buffer closed).
2482 */
2483 if (req->l - body >= limit || /* enough bytes! */
2484 req->flags & (BF_FULL | BF_READ_ERROR | BF_SHUTR | BF_READ_TIMEOUT) ||
2485 tick_is_expired(req->analyse_exp, now_ms)) {
2486 /* The situation will not evolve, so let's give up on the analysis. */
2487 s->logs.tv_request = now; /* update the request timer to reflect full request */
2488 req->analysers &= ~AN_REQ_HTTP_BODY;
2489 req->analyse_exp = TICK_ETERNITY;
2490 return 1;
2491 }
2492 else {
2493 /* Not enough data. We'll re-use the http-request
2494 * timeout here. Ideally, we should set the timeout
2495 * relative to the accept() date. We just set the
2496 * request timeout once at the beginning of the
2497 * request.
2498 */
2499 buffer_write_dis(req);
2500 if (!tick_isset(req->analyse_exp))
2501 req->analyse_exp = tick_add_ifset(now_ms, s->fe->timeout.httpreq);
2502 return 0;
2503 }
2504}
2505
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2506/* This function performs all the processing enabled for the current response.
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2507 * It normally returns zero, but may return 1 if it absolutely needs to be
2508 * called again after other functions. It relies on buffers flags, and updates
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2509 * t->rep->analysers. It might make sense to explode it into several other
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2510 * functions. It works like process_request (see indications above).
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2511 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2512int process_response(struct session *t)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2513{
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2514 struct http_txn *txn = &t->txn;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2515 struct buffer *req = t->req;
2516 struct buffer *rep = t->rep;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2517
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2518 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]2519 now_ms, __FUNCTION__,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2520 t,
2521 rep,
2522 rep->rex, rep->wex,
2523 rep->flags,
2524 rep->l,
2525 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]2526
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2527 if (rep->analysers & AN_RTR_HTTP_HDR) { /* receiving server headers */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2528 /*
2529 * Now parse the partial (or complete) lines.
2530 * We will check the response syntax, and also join multi-line
2531 * headers. An index of all the lines will be elaborated while
2532 * parsing.
2533 *
2534 * For the parsing, we use a 28 states FSM.
2535 *
2536 * Here is the information we currently have :
Willy Tarreaue393fe22008-08-16 22:18:07 +0200[diff] [blame]2537 * rep->data + rep->som = beginning of response
2538 * rep->data + rep->eoh = end of processed headers / start of current one
2539 * rep->data + rep->eol = end of current header or line (LF or CRLF)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2540 * rep->lr = first non-visited byte
2541 * rep->r = end of data
2542 */
Willy Tarreau7f875f62008-08-11 17:35:01 +0200[diff] [blame]2543
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2544 int cur_idx;
2545 struct http_msg *msg = &txn->rsp;
2546 struct proxy *cur_proxy;
2547
2548 if (likely(rep->lr < rep->r))
2549 http_msg_analyzer(rep, msg, &txn->hdr_idx);
2550
2551 /* 1: we might have to print this header in debug mode */
2552 if (unlikely((global.mode & MODE_DEBUG) &&
2553 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
2554 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
2555 char *eol, *sol;
2556
2557 sol = rep->data + msg->som;
2558 eol = sol + msg->sl.rq.l;
2559 debug_hdr("srvrep", t, sol, eol);
2560
2561 sol += hdr_idx_first_pos(&txn->hdr_idx);
2562 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
2563
2564 while (cur_idx) {
2565 eol = sol + txn->hdr_idx.v[cur_idx].len;
2566 debug_hdr("srvhdr", t, sol, eol);
2567 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2568 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2569 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2570 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2571
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2572 /*
2573 * Now we quickly check if we have found a full valid response.
2574 * If not so, we check the FD and buffer states before leaving.
2575 * A full response is indicated by the fact that we have seen
2576 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
2577 * responses are checked first.
2578 *
2579 * Depending on whether the client is still there or not, we
2580 * may send an error response back or not. Note that normally
2581 * we should only check for HTTP status there, and check I/O
2582 * errors somewhere else.
2583 */
2584
2585 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2586 /* Invalid response */
2587 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
2588 hdr_response_bad:
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2589 //buffer_shutr(rep);
2590 //buffer_shutw(req);
2591 //fd_delete(req->cons->fd);
2592 //req->cons->state = SI_ST_CLO;
2593 buffer_shutr_now(rep);
2594 buffer_shutw_now(req);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2595 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2596 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2597 t->srv->failed_resp++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2598 //sess_change_server(t, NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2599 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2600 t->be->failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2601 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2602 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2603 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2604 if (!(t->flags & SN_ERR_MASK))
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2605 t->flags |= SN_ERR_PRXCOND;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2606 if (!(t->flags & SN_FINST_MASK))
2607 t->flags |= SN_FINST_H;
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]2608
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2609 //if (t->srv && may_dequeue_tasks(t->srv, t->be))
2610 // process_srv_queue(t->srv);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2611
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2612 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2613 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2614 /* too large response does not fit in buffer. */
2615 else if (rep->flags & BF_FULL) {
2616 goto hdr_response_bad;
2617 }
2618 /* read error */
2619 else if (rep->flags & BF_READ_ERROR) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2620 buffer_shutr_now(rep);
2621 buffer_shutw_now(req);
2622 //fd_delete(req->cons->fd);
2623 //req->cons->state = SI_ST_CLO;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2624 //if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2625 //t->srv->cur_sess--;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2626 //t->srv->failed_resp++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2627 //sess_change_server(t, NULL);
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2628 //}
2629 //t->be->failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2630 rep->analysers = 0;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2631 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2632 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2633 if (!(t->flags & SN_ERR_MASK))
2634 t->flags |= SN_ERR_SRVCL;
2635 if (!(t->flags & SN_FINST_MASK))
2636 t->flags |= SN_FINST_H;
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]2637
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2638 //if (t->srv && may_dequeue_tasks(t->srv, t->be))
2639 // process_srv_queue(t->srv);
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2640
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 Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2643 /* read timeout : return a 504 to the client. */
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2644 else if (rep->flags & BF_READ_TIMEOUT) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +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;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2649 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2650 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2651 t->srv->failed_resp++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2652 //sess_change_server(t, NULL);
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2653 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2654 t->be->failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2655 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2656 txn->status = 504;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2657 stream_int_return(rep->cons, error_message(t, HTTP_ERR_504));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2658 if (!(t->flags & SN_ERR_MASK))
2659 t->flags |= SN_ERR_SRVTO;
2660 if (!(t->flags & SN_FINST_MASK))
2661 t->flags |= SN_FINST_H;
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]2662
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2663 //if (t->srv && may_dequeue_tasks(t->srv, t->be))
2664 // process_srv_queue(t->srv);
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2665 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2666 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2667 /* write error to client, or close from server */
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]2668 else if (rep->flags & (BF_WRITE_ERROR|BF_SHUTR)) {
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2669 buffer_shutr_now(rep);
2670 buffer_shutw_now(req);
2671 //fd_delete(req->cons->fd);
2672 //req->cons->state = SI_ST_CLO;
2673 if (t->srv) {
2674 //t->srv->cur_sess--;
2675 t->srv->failed_resp++;
2676 //sess_change_server(t, NULL);
2677 }
2678 t->be->failed_resp++;
2679 rep->analysers = 0;
2680 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2681 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2682 if (!(t->flags & SN_ERR_MASK))
2683 t->flags |= SN_ERR_SRVCL;
2684 if (!(t->flags & SN_FINST_MASK))
2685 t->flags |= SN_FINST_H;
2686
2687 //if (t->srv && may_dequeue_tasks(t->srv, t->be))
2688 // process_srv_queue(t->srv);
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2689
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2690 return 0;
2691 }
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]2692 buffer_write_dis(rep);
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2693 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2694 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2695
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2696
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2697 /*****************************************************************
2698 * More interesting part now : we know that we have a complete *
2699 * response which at least looks like HTTP. We have an indicator *
2700 * of each header's length, so we can parse them quickly. *
2701 ****************************************************************/
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2702
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2703 rep->analysers &= ~AN_RTR_HTTP_HDR;
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]2704
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2705 /* ensure we keep this pointer to the beginning of the message */
2706 msg->sol = rep->data + msg->som;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2707
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2708 /*
2709 * 1: get the status code and check for cacheability.
2710 */
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2711
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2712 t->logs.logwait &= ~LW_RESP;
2713 txn->status = strl2ui(rep->data + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2714
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2715 switch (txn->status) {
2716 case 200:
2717 case 203:
2718 case 206:
2719 case 300:
2720 case 301:
2721 case 410:
2722 /* RFC2616 @13.4:
2723 * "A response received with a status code of
2724 * 200, 203, 206, 300, 301 or 410 MAY be stored
2725 * by a cache (...) unless a cache-control
2726 * directive prohibits caching."
2727 *
2728 * RFC2616 @9.5: POST method :
2729 * "Responses to this method are not cacheable,
2730 * unless the response includes appropriate
2731 * Cache-Control or Expires header fields."
2732 */
2733 if (likely(txn->meth != HTTP_METH_POST) &&
2734 (t->be->options & (PR_O_CHK_CACHE|PR_O_COOK_NOC)))
2735 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
2736 break;
2737 default:
2738 break;
2739 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2740
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2741 /*
2742 * 2: we may need to capture headers
2743 */
2744 if (unlikely((t->logs.logwait & LW_RSPHDR) && t->fe->rsp_cap))
2745 capture_headers(rep->data + msg->som, &txn->hdr_idx,
2746 txn->rsp.cap, t->fe->rsp_cap);
2747
2748 /*
2749 * 3: we will have to evaluate the filters.
2750 * As opposed to version 1.2, now they will be evaluated in the
2751 * filters order and not in the header order. This means that
2752 * each filter has to be validated among all headers.
2753 *
2754 * Filters are tried with ->be first, then with ->fe if it is
2755 * different from ->be.
2756 */
2757
2758 t->flags &= ~SN_CONN_CLOSED; /* prepare for inspection */
2759
2760 cur_proxy = t->be;
2761 while (1) {
2762 struct proxy *rule_set = cur_proxy;
2763
2764 /* try headers filters */
2765 if (rule_set->rsp_exp != NULL) {
2766 if (apply_filters_to_response(t, rep, rule_set->rsp_exp) < 0) {
2767 return_bad_resp:
2768 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2769 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2770 t->srv->failed_resp++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2771 //sess_change_server(t, NULL);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2772 }
2773 cur_proxy->failed_resp++;
2774 return_srv_prx_502:
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2775 buffer_shutr_now(rep);
2776 buffer_shutw_now(req);
2777 //fd_delete(req->cons->fd);
2778 //req->cons->state = SI_ST_CLO;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2779 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2780 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2781 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2782 if (!(t->flags & SN_ERR_MASK))
2783 t->flags |= SN_ERR_PRXCOND;
2784 if (!(t->flags & SN_FINST_MASK))
2785 t->flags |= SN_FINST_H;
2786 /* We used to have a free connection slot. Since we'll never use it,
2787 * we have to inform the server that it may be used by another session.
2788 */
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2789 //if (t->srv && may_dequeue_tasks(t->srv, cur_proxy))
2790 // process_srv_queue(t->srv);
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2791 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2792 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2793 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2794
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2795 /* has the response been denied ? */
2796 if (txn->flags & TX_SVDENY) {
Willy Tarreauf899b942008-03-28 18:09:38 +0100[diff] [blame]2797 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2798 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2799 t->srv->failed_secu++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2800 //sess_change_server(t, NULL);
Willy Tarreauf899b942008-03-28 18:09:38 +0100[diff] [blame]2801 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2802 cur_proxy->denied_resp++;
2803 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]2804 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2805
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2806 /* We might have to check for "Connection:" */
2807 if (((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
2808 !(t->flags & SN_CONN_CLOSED)) {
2809 char *cur_ptr, *cur_end, *cur_next;
2810 int cur_idx, old_idx, delta, val;
2811 struct hdr_idx_elem *cur_hdr;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2812
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2813 cur_next = rep->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
2814 old_idx = 0;
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]2815
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2816 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
2817 cur_hdr = &txn->hdr_idx.v[cur_idx];
2818 cur_ptr = cur_next;
2819 cur_end = cur_ptr + cur_hdr->len;
2820 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2821
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2822 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
2823 if (val) {
2824 /* 3 possibilities :
2825 * - we have already set Connection: close,
2826 * so we remove this line.
2827 * - we have not yet set Connection: close,
2828 * but this line indicates close. We leave
2829 * it untouched and set the flag.
2830 * - we have not yet set Connection: close,
2831 * and this line indicates non-close. We
2832 * replace it.
2833 */
2834 if (t->flags & SN_CONN_CLOSED) {
2835 delta = buffer_replace2(rep, cur_ptr, cur_next, NULL, 0);
2836 txn->rsp.eoh += delta;
2837 cur_next += delta;
2838 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
2839 txn->hdr_idx.used--;
2840 cur_hdr->len = 0;
2841 } else {
2842 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
2843 delta = buffer_replace2(rep, cur_ptr + val, cur_end,
2844 "close", 5);
2845 cur_next += delta;
2846 cur_hdr->len += delta;
2847 txn->rsp.eoh += delta;
2848 }
2849 t->flags |= SN_CONN_CLOSED;
2850 }
2851 }
2852 old_idx = cur_idx;
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]2853 }
2854 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2855
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2856 /* add response headers from the rule sets in the same order */
2857 for (cur_idx = 0; cur_idx < rule_set->nb_rspadd; cur_idx++) {
2858 if (unlikely(http_header_add_tail(rep, &txn->rsp, &txn->hdr_idx,
2859 rule_set->rsp_add[cur_idx])) < 0)
2860 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2861 }
2862
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2863 /* check whether we're already working on the frontend */
2864 if (cur_proxy == t->fe)
2865 break;
2866 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2867 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2868
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2869 /*
2870 * 4: check for server cookie.
2871 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]2872 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2873 || (t->be->options & PR_O_CHK_CACHE))
2874 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2875
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2876
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2877 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2878 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2879 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2880 if ((t->be->options & (PR_O_COOK_NOC | PR_O_CHK_CACHE)) != 0)
2881 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2882
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2883 /*
2884 * 6: add server cookie in the response if needed
2885 */
2886 if ((t->srv) && !(t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_INS) &&
2887 (!(t->be->options & PR_O_COOK_POST) || (txn->meth == HTTP_METH_POST))) {
2888 int len;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2889
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2890 /* the server is known, it's not the one the client requested, we have to
2891 * insert a set-cookie here, except if we want to insert only on POST
2892 * requests and this one isn't. Note that servers which don't have cookies
2893 * (eg: some backup servers) will return a full cookie removal request.
2894 */
2895 len = sprintf(trash, "Set-Cookie: %s=%s; path=/",
2896 t->be->cookie_name,
2897 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]2898
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2899 if (t->be->cookie_domain)
2900 len += sprintf(trash+len, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2901
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2902 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
2903 trash, len)) < 0)
2904 goto return_bad_resp;
2905 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2906
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2907 /* Here, we will tell an eventual cache on the client side that we don't
2908 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
2909 * Some caches understand the correct form: 'no-cache="set-cookie"', but
2910 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
2911 */
2912 if ((t->be->options & PR_O_COOK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2913
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2914 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
2915
2916 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
2917 "Cache-control: private", 22)) < 0)
2918 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2919 }
2920 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2921
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2922
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2923 /*
2924 * 7: check if result will be cacheable with a cookie.
2925 * We'll block the response if security checks have caught
2926 * nasty things such as a cacheable cookie.
2927 */
2928 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) ==
2929 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) &&
2930 (t->be->options & PR_O_CHK_CACHE)) {
2931
2932 /* we're in presence of a cacheable response containing
2933 * a set-cookie header. We'll block it as requested by
2934 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2935 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2936 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2937 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2938 t->srv->failed_secu++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2939 //sess_change_server(t, NULL);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2940 }
2941 t->be->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2942
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2943 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
2944 t->be->id, t->srv?t->srv->id:"<dispatch>");
2945 send_log(t->be, LOG_ALERT,
2946 "Blocking cacheable cookie in response from instance %s, server %s.\n",
2947 t->be->id, t->srv?t->srv->id:"<dispatch>");
2948 goto return_srv_prx_502;
2949 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2950
2951 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2952 * 8: add "Connection: close" if needed and not yet set.
2953 * 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]2954 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2955 if (!(t->flags & SN_CONN_CLOSED) &&
2956 ((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) {
2957 if ((unlikely(msg->sl.st.v_l != 8) ||
2958 unlikely(req->data[msg->som + 7] != '0')) &&
2959 unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
2960 "Connection: close", 17)) < 0)
2961 goto return_bad_resp;
2962 t->flags |= SN_CONN_CLOSED;
2963 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2964
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2965 /*************************************************************
2966 * OK, that's finished for the headers. We have done what we *
2967 * could. Let's switch to the DATA state. *
2968 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2969
Willy Tarreaue393fe22008-08-16 22:18:07 +0200[diff] [blame]2970 buffer_set_rlim(rep, BUFSIZE); /* no more rewrite needed */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2971 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2972
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2973#ifdef CONFIG_HAP_TCPSPLICE
2974 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
2975 /* TCP splicing supported by both FE and BE */
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2976 tcp_splice_splicefd(rep->cons->fd, rep->prod->fd, 0);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2977 }
2978#endif
2979 /* if the user wants to log as soon as possible, without counting
2980 * bytes from the server, then this is the right moment. We have
2981 * to temporarily assign bytes_out to log what we currently have.
2982 */
2983 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
2984 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
2985 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2986 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2987 t->logs.bytes_out = 0;
2988 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2989
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2990 /* Note: we must not try to cheat by jumping directly to DATA,
2991 * otherwise we would not let the client side wake up.
2992 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2993
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2994 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2995 }
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2996
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2997 /* Note: eventhough nobody should set an unknown flag, clearing them right now will
2998 * probably reduce one day's debugging session.
2999 */
3000#ifdef DEBUG_DEV
3001 if (rep->analysers & ~(AN_RTR_HTTP_HDR)) {
3002 fprintf(stderr, "FIXME !!!! unknown analysers flags %s:%d = 0x%08X\n",
3003 __FILE__, __LINE__, rep->analysers);
3004 ABORT_NOW();
3005 }
3006#endif
3007 rep->analysers &= AN_RTR_HTTP_HDR;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3008 return 0;
3009}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3010
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3011/*
3012 * Produces data for the session <s> depending on its source. Expects to be
Willy Tarreau1ae3a052008-08-16 10:56:30 +0200[diff] [blame]3013 * called with client socket shut down on input. Right now, only statistics can
Willy Tarreau72b179a2008-08-28 16:01:32 +0200[diff] [blame]3014 * be produced. It stops by itself by unsetting the BF_HIJACK flag from the
3015 * 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]3016 * the buffer, or simply by letting an empty buffer upon return.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3017 */
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3018void produce_content(struct session *s, struct buffer *rep)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3019{
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3020 if (s->data_source == DATA_SRC_NONE) {
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3021 buffer_stop_hijack(rep);
3022 return;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3023 }
3024 else if (s->data_source == DATA_SRC_STATS) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3025 /* dump server statistics */
Willy Tarreau0a464892008-12-07 18:30:00 +0100[diff] [blame]3026 int ret = stats_dump_http(s, rep, s->be->uri_auth);
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3027 if (ret >= 0)
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3028 return;
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3029 /* -1 indicates an error */
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3030 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3031
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3032 /* unknown data source or internal error */
3033 s->txn.status = 500;
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3034 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_500));
Willy Tarreauf8533202008-08-16 14:55:08 +0200[diff] [blame]3035 trace_term(s, TT_HTTP_CNT_1);
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3036 if (!(s->flags & SN_ERR_MASK))
3037 s->flags |= SN_ERR_PRXCOND;
3038 if (!(s->flags & SN_FINST_MASK))
3039 s->flags |= SN_FINST_R;
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3040 buffer_stop_hijack(rep);
3041 return;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3042}
3043
3044
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3045/* Iterate the same filter through all request headers.
3046 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3047 * Since it can manage the switch to another backend, it updates the per-proxy
3048 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3049 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3050int 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]3051{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3052 char term;
3053 char *cur_ptr, *cur_end, *cur_next;
3054 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3055 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3056 struct hdr_idx_elem *cur_hdr;
3057 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]3058
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3059 last_hdr = 0;
3060
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3061 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3062 old_idx = 0;
3063
3064 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3065 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3066 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3067 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3068 (exp->action == ACT_ALLOW ||
3069 exp->action == ACT_DENY ||
3070 exp->action == ACT_TARPIT))
3071 return 0;
3072
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3073 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3074 if (!cur_idx)
3075 break;
3076
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3077 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3078 cur_ptr = cur_next;
3079 cur_end = cur_ptr + cur_hdr->len;
3080 cur_next = cur_end + cur_hdr->cr + 1;
3081
3082 /* Now we have one header between cur_ptr and cur_end,
3083 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3084 */
3085
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3086 /* The annoying part is that pattern matching needs
3087 * that we modify the contents to null-terminate all
3088 * strings before testing them.
3089 */
3090
3091 term = *cur_end;
3092 *cur_end = '\0';
3093
3094 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3095 switch (exp->action) {
3096 case ACT_SETBE:
3097 /* It is not possible to jump a second time.
3098 * FIXME: should we return an HTTP/500 here so that
3099 * the admin knows there's a problem ?
3100 */
3101 if (t->be != t->fe)
3102 break;
3103
3104 /* Swithing Proxy */
3105 t->be = (struct proxy *) exp->replace;
3106
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3107 /* right now, the backend switch is not overly complicated
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3108 * because we have associated req_cap and rsp_cap to the
3109 * frontend, and the beconn will be updated later.
3110 */
3111
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3112 t->rep->rto = t->req->wto = t->be->timeout.server;
3113 t->req->cto = t->be->timeout.connect;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3114 t->conn_retries = t->be->conn_retries;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3115 last_hdr = 1;
3116 break;
3117
3118 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3119 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3120 last_hdr = 1;
3121 break;
3122
3123 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3124 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3125 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3126 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3127 break;
3128
3129 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3130 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3131 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3132 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3133 break;
3134
3135 case ACT_REPLACE:
3136 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3137 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3138 /* FIXME: if the user adds a newline in the replacement, the
3139 * index will not be recalculated for now, and the new line
3140 * will not be counted as a new header.
3141 */
3142
3143 cur_end += delta;
3144 cur_next += delta;
3145 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3146 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3147 break;
3148
3149 case ACT_REMOVE:
3150 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
3151 cur_next += delta;
3152
3153 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3154 txn->req.eoh += delta;
3155 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3156 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3157 cur_hdr->len = 0;
3158 cur_end = NULL; /* null-term has been rewritten */
3159 break;
3160
3161 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3162 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3163 if (cur_end)
3164 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3165
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3166 /* keep the link from this header to next one in case of later
3167 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3168 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3169 old_idx = cur_idx;
3170 }
3171 return 0;
3172}
3173
3174
3175/* Apply the filter to the request line.
3176 * Returns 0 if nothing has been done, 1 if the filter has been applied,
3177 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3178 * Since it can manage the switch to another backend, it updates the per-proxy
3179 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3180 */
3181int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
3182{
3183 char term;
3184 char *cur_ptr, *cur_end;
3185 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3186 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3187 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3188
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3189
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3190 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3191 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3192 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3193 (exp->action == ACT_ALLOW ||
3194 exp->action == ACT_DENY ||
3195 exp->action == ACT_TARPIT))
3196 return 0;
3197 else if (exp->action == ACT_REMOVE)
3198 return 0;
3199
3200 done = 0;
3201
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3202 cur_ptr = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3203 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3204
3205 /* Now we have the request line between cur_ptr and cur_end */
3206
3207 /* The annoying part is that pattern matching needs
3208 * that we modify the contents to null-terminate all
3209 * strings before testing them.
3210 */
3211
3212 term = *cur_end;
3213 *cur_end = '\0';
3214
3215 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3216 switch (exp->action) {
3217 case ACT_SETBE:
3218 /* It is not possible to jump a second time.
3219 * FIXME: should we return an HTTP/500 here so that
3220 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3221 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3222 if (t->be != t->fe)
3223 break;
3224
3225 /* Swithing Proxy */
3226 t->be = (struct proxy *) exp->replace;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3227
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3228 /* right now, the backend switch is not too much complicated
3229 * because we have associated req_cap and rsp_cap to the
3230 * frontend, and the beconn will be updated later.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3231 */
3232
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3233 t->rep->rto = t->req->wto = t->be->timeout.server;
3234 t->req->cto = t->be->timeout.connect;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3235 t->conn_retries = t->be->conn_retries;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3236 done = 1;
3237 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3238
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3239 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3240 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3241 done = 1;
3242 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3243
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3244 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3245 txn->flags |= TX_CLDENY;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3246 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3247 done = 1;
3248 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3249
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3250 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3251 txn->flags |= TX_CLTARPIT;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3252 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3253 done = 1;
3254 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3255
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3256 case ACT_REPLACE:
3257 *cur_end = term; /* restore the string terminator */
3258 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3259 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3260 /* FIXME: if the user adds a newline in the replacement, the
3261 * index will not be recalculated for now, and the new line
3262 * will not be counted as a new header.
3263 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3264
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3265 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3266 cur_end += delta;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3267
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3268 txn->req.sol = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3269 cur_end = (char *)http_parse_reqline(&txn->req, req->data,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3270 HTTP_MSG_RQMETH,
3271 cur_ptr, cur_end + 1,
3272 NULL, NULL);
3273 if (unlikely(!cur_end))
3274 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3275
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3276 /* we have a full request and we know that we have either a CR
3277 * or an LF at <ptr>.
3278 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3279 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
3280 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]3281 /* there is no point trying this regex on headers */
3282 return 1;
3283 }
3284 }
3285 *cur_end = term; /* restore the string terminator */
3286 return done;
3287}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]3288
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3289
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3290
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3291/*
3292 * Apply all the req filters <exp> to all headers in buffer <req> of session <t>.
3293 * 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]3294 * unparsable request. Since it can manage the switch to another backend, it
3295 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3296 */
3297int apply_filters_to_request(struct session *t, struct buffer *req, struct hdr_exp *exp)
3298{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3299 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3300 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3301 while (exp && !(txn->flags & (TX_CLDENY|TX_CLTARPIT))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3302 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3303
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3304 /*
3305 * The interleaving of transformations and verdicts
3306 * makes it difficult to decide to continue or stop
3307 * the evaluation.
3308 */
3309
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3310 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3311 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
3312 exp->action == ACT_TARPIT || exp->action == ACT_PASS)) {
3313 exp = exp->next;
3314 continue;
3315 }
3316
3317 /* Apply the filter to the request line. */
3318 ret = apply_filter_to_req_line(t, req, exp);
3319 if (unlikely(ret < 0))
3320 return -1;
3321
3322 if (likely(ret == 0)) {
3323 /* The filter did not match the request, it can be
3324 * iterated through all headers.
3325 */
3326 apply_filter_to_req_headers(t, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3327 }
3328 exp = exp->next;
3329 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3330 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3331}
3332
3333
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3334
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3335/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3336 * Manage client-side cookie. It can impact performance by about 2% so it is
3337 * desirable to call it only when needed.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3338 */
3339void manage_client_side_cookies(struct session *t, struct buffer *req)
3340{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3341 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3342 char *p1, *p2, *p3, *p4;
3343 char *del_colon, *del_cookie, *colon;
3344 int app_cookies;
3345
3346 appsess *asession_temp = NULL;
3347 appsess local_asession;
3348
3349 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3350 int cur_idx, old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3351
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3352 /* Iterate through the headers.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3353 * we start with the start line.
3354 */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]3355 old_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3356 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3357
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3358 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3359 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3360 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3361
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3362 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3363 cur_ptr = cur_next;
3364 cur_end = cur_ptr + cur_hdr->len;
3365 cur_next = cur_end + cur_hdr->cr + 1;
3366
3367 /* We have one full header between cur_ptr and cur_end, and the
3368 * next header starts at cur_next. We're only interested in
3369 * "Cookie:" headers.
3370 */
3371
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3372 val = http_header_match2(cur_ptr, cur_end, "Cookie", 6);
3373 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3374 old_idx = cur_idx;
3375 continue;
3376 }
3377
3378 /* Now look for cookies. Conforming to RFC2109, we have to support
3379 * attributes whose name begin with a '$', and associate them with
3380 * the right cookie, if we want to delete this cookie.
3381 * So there are 3 cases for each cookie read :
3382 * 1) it's a special attribute, beginning with a '$' : ignore it.
3383 * 2) it's a server id cookie that we *MAY* want to delete : save
3384 * some pointers on it (last semi-colon, beginning of cookie...)
3385 * 3) it's an application cookie : we *MAY* have to delete a previous
3386 * "special" cookie.
3387 * At the end of loop, if a "special" cookie remains, we may have to
3388 * remove it. If no application cookie persists in the header, we
3389 * *MUST* delete it
3390 */
3391
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3392 colon = p1 = cur_ptr + val; /* first non-space char after 'Cookie:' */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3393
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3394 /* del_cookie == NULL => nothing to be deleted */
3395 del_colon = del_cookie = NULL;
3396 app_cookies = 0;
3397
3398 while (p1 < cur_end) {
3399 /* skip spaces and colons, but keep an eye on these ones */
3400 while (p1 < cur_end) {
3401 if (*p1 == ';' || *p1 == ',')
3402 colon = p1;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3403 else if (!isspace((unsigned char)*p1))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3404 break;
3405 p1++;
3406 }
3407
3408 if (p1 == cur_end)
3409 break;
3410
3411 /* p1 is at the beginning of the cookie name */
3412 p2 = p1;
3413 while (p2 < cur_end && *p2 != '=')
3414 p2++;
3415
3416 if (p2 == cur_end)
3417 break;
3418
3419 p3 = p2 + 1; /* skips the '=' sign */
3420 if (p3 == cur_end)
3421 break;
3422
3423 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3424 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';' && *p4 != ',')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3425 p4++;
3426
3427 /* here, we have the cookie name between p1 and p2,
3428 * and its value between p3 and p4.
3429 * we can process it :
3430 *
3431 * Cookie: NAME=VALUE;
3432 * | || || |
3433 * | || || +--> p4
3434 * | || |+-------> p3
3435 * | || +--------> p2
3436 * | |+------------> p1
3437 * | +-------------> colon
3438 * +--------------------> cur_ptr
3439 */
3440
3441 if (*p1 == '$') {
3442 /* skip this one */
3443 }
3444 else {
3445 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3446 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3447 txn->cli_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3448 (p4 - p1 >= t->fe->capture_namelen) &&
3449 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3450 int log_len = p4 - p1;
3451
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]3452 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3453 Alert("HTTP logging : out of memory.\n");
3454 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3455 if (log_len > t->fe->capture_len)
3456 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3457 memcpy(txn->cli_cookie, p1, log_len);
3458 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3459 }
3460 }
3461
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3462 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
3463 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3464 /* Cool... it's the right one */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3465 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3466 char *delim;
3467
3468 /* if we're in cookie prefix mode, we'll search the delimitor so that we
3469 * have the server ID betweek p3 and delim, and the original cookie between
3470 * delim+1 and p4. Otherwise, delim==p4 :
3471 *
3472 * Cookie: NAME=SRV~VALUE;
3473 * | || || | |
3474 * | || || | +--> p4
3475 * | || || +--------> delim
3476 * | || |+-----------> p3
3477 * | || +------------> p2
3478 * | |+----------------> p1
3479 * | +-----------------> colon
3480 * +------------------------> cur_ptr
3481 */
3482
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3483 if (t->be->options & PR_O_COOK_PFX) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3484 for (delim = p3; delim < p4; delim++)
3485 if (*delim == COOKIE_DELIM)
3486 break;
3487 }
3488 else
3489 delim = p4;
3490
3491
3492 /* Here, we'll look for the first running server which supports the cookie.
3493 * This allows to share a same cookie between several servers, for example
3494 * to dedicate backup servers to specific servers only.
3495 * However, to prevent clients from sticking to cookie-less backup server
3496 * when they have incidentely learned an empty cookie, we simply ignore
3497 * empty cookies and mark them as invalid.
3498 */
3499 if (delim == p3)
3500 srv = NULL;
3501
3502 while (srv) {
Willy Tarreau92f2ab12007-02-02 22:14:47 +0100[diff] [blame]3503 if (srv->cookie && (srv->cklen == delim - p3) &&
3504 !memcmp(p3, srv->cookie, delim - p3)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3505 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3506 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3507 txn->flags &= ~TX_CK_MASK;
3508 txn->flags |= TX_CK_VALID;
3509 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3510 t->srv = srv;
3511 break;
3512 } else {
3513 /* we found a server, but it's down */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3514 txn->flags &= ~TX_CK_MASK;
3515 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3516 }
3517 }
3518 srv = srv->next;
3519 }
3520
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3521 if (!srv && !(txn->flags & TX_CK_DOWN)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3522 /* no server matched this cookie */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3523 txn->flags &= ~TX_CK_MASK;
3524 txn->flags |= TX_CK_INVALID;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3525 }
3526
3527 /* depending on the cookie mode, we may have to either :
3528 * - delete the complete cookie if we're in insert+indirect mode, so that
3529 * the server never sees it ;
3530 * - remove the server id from the cookie value, and tag the cookie as an
3531 * application cookie so that it does not get accidentely removed later,
3532 * if we're in cookie prefix mode
3533 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3534 if ((t->be->options & PR_O_COOK_PFX) && (delim != p4)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3535 int delta; /* negative */
3536
3537 delta = buffer_replace2(req, p3, delim + 1, NULL, 0);
3538 p4 += delta;
3539 cur_end += delta;
3540 cur_next += delta;
3541 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3542 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3543
3544 del_cookie = del_colon = NULL;
3545 app_cookies++; /* protect the header from deletion */
3546 }
3547 else if (del_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3548 (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]3549 del_cookie = p1;
3550 del_colon = colon;
3551 }
3552 } else {
3553 /* now we know that we must keep this cookie since it's
3554 * not ours. But if we wanted to delete our cookie
3555 * earlier, we cannot remove the complete header, but we
3556 * can remove the previous block itself.
3557 */
3558 app_cookies++;
3559
3560 if (del_cookie != NULL) {
3561 int delta; /* negative */
3562
3563 delta = buffer_replace2(req, del_cookie, p1, NULL, 0);
3564 p4 += delta;
3565 cur_end += delta;
3566 cur_next += delta;
3567 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3568 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3569 del_cookie = del_colon = NULL;
3570 }
3571 }
3572
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3573 if ((t->be->appsession_name != NULL) &&
3574 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3575 /* first, let's see if the cookie is our appcookie*/
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3576
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3577 /* Cool... it's the right one */
3578
3579 asession_temp = &local_asession;
3580
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3581 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3582 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
3583 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
3584 return;
3585 }
3586
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3587 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
3588 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3589 asession_temp->serverid = NULL;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3590
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3591 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3592 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
3593 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3594 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3595 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3596 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3597 Alert("Not enough memory process_cli():asession:calloc().\n");
3598 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
3599 return;
3600 }
3601
3602 asession_temp->sessid = local_asession.sessid;
3603 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3604 asession_temp->request_count = 0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3605 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3606 } else {
3607 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3608 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3609 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3610 if (asession_temp->serverid == NULL) {
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3611 /* TODO redispatch request */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3612 Alert("Found Application Session without matching server.\n");
3613 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3614 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3615 while (srv) {
3616 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3617 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3618 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3619 txn->flags &= ~TX_CK_MASK;
3620 txn->flags |= TX_CK_VALID;
3621 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3622 t->srv = srv;
3623 break;
3624 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3625 txn->flags &= ~TX_CK_MASK;
3626 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3627 }
3628 }
3629 srv = srv->next;
3630 }/* end while(srv) */
3631 }/* end else if server == NULL */
3632
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]3633 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3634 asession_temp->request_count++;
3635#if defined(DEBUG_HASH)
3636 Alert("manage_client_side_cookies\n");
3637 appsession_hash_dump(&(t->be->htbl_proxy));
3638#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3639 }/* end if ((t->proxy->appsession_name != NULL) ... */
3640 }
3641
3642 /* we'll have to look for another cookie ... */
3643 p1 = p4;
3644 } /* while (p1 < cur_end) */
3645
3646 /* There's no more cookie on this line.
3647 * We may have marked the last one(s) for deletion.
3648 * We must do this now in two ways :
3649 * - if there is no app cookie, we simply delete the header ;
3650 * - if there are app cookies, we must delete the end of the
3651 * string properly, including the colon/semi-colon before
3652 * the cookie name.
3653 */
3654 if (del_cookie != NULL) {
3655 int delta;
3656 if (app_cookies) {
3657 delta = buffer_replace2(req, del_colon, cur_end, NULL, 0);
3658 cur_end = del_colon;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3659 cur_hdr->len += delta;
3660 } else {
3661 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3662
3663 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3664 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3665 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3666 cur_hdr->len = 0;
3667 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]3668 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3669 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3670 }
3671
3672 /* keep the link from this header to next one */
3673 old_idx = cur_idx;
3674 } /* end of cookie processing on this header */
3675}
3676
3677
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3678/* Iterate the same filter through all response headers contained in <rtr>.
3679 * Returns 1 if this filter can be stopped upon return, otherwise 0.
3680 */
3681int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
3682{
3683 char term;
3684 char *cur_ptr, *cur_end, *cur_next;
3685 int cur_idx, old_idx, last_hdr;
3686 struct http_txn *txn = &t->txn;
3687 struct hdr_idx_elem *cur_hdr;
3688 int len, delta;
3689
3690 last_hdr = 0;
3691
3692 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
3693 old_idx = 0;
3694
3695 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3696 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3697 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3698 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3699 (exp->action == ACT_ALLOW ||
3700 exp->action == ACT_DENY))
3701 return 0;
3702
3703 cur_idx = txn->hdr_idx.v[old_idx].next;
3704 if (!cur_idx)
3705 break;
3706
3707 cur_hdr = &txn->hdr_idx.v[cur_idx];
3708 cur_ptr = cur_next;
3709 cur_end = cur_ptr + cur_hdr->len;
3710 cur_next = cur_end + cur_hdr->cr + 1;
3711
3712 /* Now we have one header between cur_ptr and cur_end,
3713 * and the next header starts at cur_next.
3714 */
3715
3716 /* The annoying part is that pattern matching needs
3717 * that we modify the contents to null-terminate all
3718 * strings before testing them.
3719 */
3720
3721 term = *cur_end;
3722 *cur_end = '\0';
3723
3724 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3725 switch (exp->action) {
3726 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3727 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3728 last_hdr = 1;
3729 break;
3730
3731 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3732 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3733 last_hdr = 1;
3734 break;
3735
3736 case ACT_REPLACE:
3737 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3738 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
3739 /* FIXME: if the user adds a newline in the replacement, the
3740 * index will not be recalculated for now, and the new line
3741 * will not be counted as a new header.
3742 */
3743
3744 cur_end += delta;
3745 cur_next += delta;
3746 cur_hdr->len += delta;
3747 txn->rsp.eoh += delta;
3748 break;
3749
3750 case ACT_REMOVE:
3751 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
3752 cur_next += delta;
3753
3754 /* FIXME: this should be a separate function */
3755 txn->rsp.eoh += delta;
3756 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3757 txn->hdr_idx.used--;
3758 cur_hdr->len = 0;
3759 cur_end = NULL; /* null-term has been rewritten */
3760 break;
3761
3762 }
3763 }
3764 if (cur_end)
3765 *cur_end = term; /* restore the string terminator */
3766
3767 /* keep the link from this header to next one in case of later
3768 * removal of next header.
3769 */
3770 old_idx = cur_idx;
3771 }
3772 return 0;
3773}
3774
3775
3776/* Apply the filter to the status line in the response buffer <rtr>.
3777 * Returns 0 if nothing has been done, 1 if the filter has been applied,
3778 * or -1 if a replacement resulted in an invalid status line.
3779 */
3780int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
3781{
3782 char term;
3783 char *cur_ptr, *cur_end;
3784 int done;
3785 struct http_txn *txn = &t->txn;
3786 int len, delta;
3787
3788
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3789 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3790 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3791 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3792 (exp->action == ACT_ALLOW ||
3793 exp->action == ACT_DENY))
3794 return 0;
3795 else if (exp->action == ACT_REMOVE)
3796 return 0;
3797
3798 done = 0;
3799
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3800 cur_ptr = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3801 cur_end = cur_ptr + txn->rsp.sl.rq.l;
3802
3803 /* Now we have the status line between cur_ptr and cur_end */
3804
3805 /* The annoying part is that pattern matching needs
3806 * that we modify the contents to null-terminate all
3807 * strings before testing them.
3808 */
3809
3810 term = *cur_end;
3811 *cur_end = '\0';
3812
3813 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3814 switch (exp->action) {
3815 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3816 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3817 done = 1;
3818 break;
3819
3820 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3821 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3822 done = 1;
3823 break;
3824
3825 case ACT_REPLACE:
3826 *cur_end = term; /* restore the string terminator */
3827 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3828 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
3829 /* FIXME: if the user adds a newline in the replacement, the
3830 * index will not be recalculated for now, and the new line
3831 * will not be counted as a new header.
3832 */
3833
3834 txn->rsp.eoh += delta;
3835 cur_end += delta;
3836
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3837 txn->rsp.sol = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3838 cur_end = (char *)http_parse_stsline(&txn->rsp, rtr->data,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]3839 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3840 cur_ptr, cur_end + 1,
3841 NULL, NULL);
3842 if (unlikely(!cur_end))
3843 return -1;
3844
3845 /* we have a full respnse and we know that we have either a CR
3846 * or an LF at <ptr>.
3847 */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3848 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]3849 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.rq.l, *cur_end == '\r');
3850 /* there is no point trying this regex on headers */
3851 return 1;
3852 }
3853 }
3854 *cur_end = term; /* restore the string terminator */
3855 return done;
3856}
3857
3858
3859
3860/*
3861 * Apply all the resp filters <exp> to all headers in buffer <rtr> of session <t>.
3862 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
3863 * unparsable response.
3864 */
3865int apply_filters_to_response(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
3866{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3867 struct http_txn *txn = &t->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3868 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3869 while (exp && !(txn->flags & TX_SVDENY)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3870 int ret;
3871
3872 /*
3873 * The interleaving of transformations and verdicts
3874 * makes it difficult to decide to continue or stop
3875 * the evaluation.
3876 */
3877
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3878 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3879 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
3880 exp->action == ACT_PASS)) {
3881 exp = exp->next;
3882 continue;
3883 }
3884
3885 /* Apply the filter to the status line. */
3886 ret = apply_filter_to_sts_line(t, rtr, exp);
3887 if (unlikely(ret < 0))
3888 return -1;
3889
3890 if (likely(ret == 0)) {
3891 /* The filter did not match the response, it can be
3892 * iterated through all headers.
3893 */
3894 apply_filter_to_resp_headers(t, rtr, exp);
3895 }
3896 exp = exp->next;
3897 }
3898 return 0;
3899}
3900
3901
3902
3903/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3904 * Manage server-side cookies. It can impact performance by about 2% so it is
3905 * desirable to call it only when needed.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3906 */
3907void manage_server_side_cookies(struct session *t, struct buffer *rtr)
3908{
3909 struct http_txn *txn = &t->txn;
3910 char *p1, *p2, *p3, *p4;
3911
3912 appsess *asession_temp = NULL;
3913 appsess local_asession;
3914
3915 char *cur_ptr, *cur_end, *cur_next;
3916 int cur_idx, old_idx, delta;
3917
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3918 /* Iterate through the headers.
3919 * we start with the start line.
3920 */
3921 old_idx = 0;
3922 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
3923
3924 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
3925 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3926 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3927
3928 cur_hdr = &txn->hdr_idx.v[cur_idx];
3929 cur_ptr = cur_next;
3930 cur_end = cur_ptr + cur_hdr->len;
3931 cur_next = cur_end + cur_hdr->cr + 1;
3932
3933 /* We have one full header between cur_ptr and cur_end, and the
3934 * next header starts at cur_next. We're only interested in
3935 * "Cookie:" headers.
3936 */
3937
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3938 val = http_header_match2(cur_ptr, cur_end, "Set-Cookie", 10);
3939 if (!val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3940 old_idx = cur_idx;
3941 continue;
3942 }
3943
3944 /* OK, right now we know we have a set-cookie at cur_ptr */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3945 txn->flags |= TX_SCK_ANY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3946
3947
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3948 /* maybe we only wanted to see if there was a set-cookie. Note that
3949 * the cookie capture is declared in the fronend.
3950 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3951 if (t->be->cookie_name == NULL &&
3952 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3953 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3954 return;
3955
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3956 p1 = cur_ptr + val; /* first non-space char after 'Set-Cookie:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3957
3958 while (p1 < cur_end) { /* in fact, we'll break after the first cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3959 if (p1 == cur_end || *p1 == ';') /* end of cookie */
3960 break;
3961
3962 /* p1 is at the beginning of the cookie name */
3963 p2 = p1;
3964
3965 while (p2 < cur_end && *p2 != '=' && *p2 != ';')
3966 p2++;
3967
3968 if (p2 == cur_end || *p2 == ';') /* next cookie */
3969 break;
3970
3971 p3 = p2 + 1; /* skip the '=' sign */
3972 if (p3 == cur_end)
3973 break;
3974
3975 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3976 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';')
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3977 p4++;
3978
3979 /* here, we have the cookie name between p1 and p2,
3980 * and its value between p3 and p4.
3981 * we can process it.
3982 */
3983
3984 /* first, let's see if we want to capture it */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3985 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3986 txn->srv_cookie == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3987 (p4 - p1 >= t->fe->capture_namelen) &&
3988 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3989 int log_len = p4 - p1;
3990
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]3991 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3992 Alert("HTTP logging : out of memory.\n");
3993 }
3994
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3995 if (log_len > t->fe->capture_len)
3996 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3997 memcpy(txn->srv_cookie, p1, log_len);
3998 txn->srv_cookie[log_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3999 }
4000
4001 /* now check if we need to process it for persistence */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4002 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4003 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4004 /* Cool... it's the right one */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4005 txn->flags |= TX_SCK_SEEN;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4006
4007 /* If the cookie is in insert mode on a known server, we'll delete
4008 * this occurrence because we'll insert another one later.
4009 * We'll delete it too if the "indirect" option is set and we're in
4010 * a direct access. */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4011 if (((t->srv) && (t->be->options & PR_O_COOK_INS)) ||
4012 ((t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_IND))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4013 /* this header must be deleted */
4014 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4015 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4016 txn->hdr_idx.used--;
4017 cur_hdr->len = 0;
4018 cur_next += delta;
4019 txn->rsp.eoh += delta;
4020
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4021 txn->flags |= TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4022 }
4023 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4024 (t->be->options & PR_O_COOK_RW)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4025 /* replace bytes p3->p4 with the cookie name associated
4026 * with this server since we know it.
4027 */
4028 delta = buffer_replace2(rtr, p3, p4, t->srv->cookie, t->srv->cklen);
4029 cur_hdr->len += delta;
4030 cur_next += delta;
4031 txn->rsp.eoh += delta;
4032
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4033 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4034 }
4035 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4036 (t->be->options & PR_O_COOK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4037 /* insert the cookie name associated with this server
4038 * before existing cookie, and insert a delimitor between them..
4039 */
4040 delta = buffer_replace2(rtr, p3, p3, t->srv->cookie, t->srv->cklen + 1);
4041 cur_hdr->len += delta;
4042 cur_next += delta;
4043 txn->rsp.eoh += delta;
4044
4045 p3[t->srv->cklen] = COOKIE_DELIM;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4046 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4047 }
4048 }
4049 /* next, let's see if the cookie is our appcookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4050 else if ((t->be->appsession_name != NULL) &&
4051 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4052
4053 /* Cool... it's the right one */
4054
4055 size_t server_id_len = strlen(t->srv->id) + 1;
4056 asession_temp = &local_asession;
4057
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4058 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4059 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4060 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4061 return;
4062 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4063 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4064 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4065 asession_temp->serverid = NULL;
4066
4067 /* only do insert, if lookup fails */
Ryan Warnick6d0b1fa2008-02-17 11:24:35 +0100[diff] [blame]4068 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
4069 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4070 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4071 Alert("Not enough Memory process_srv():asession:calloc().\n");
4072 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
4073 return;
4074 }
4075 asession_temp->sessid = local_asession.sessid;
4076 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4077 asession_temp->request_count = 0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4078 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
4079 } else {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4080 /* free wasted memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4081 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4082 }
4083
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4084 if (asession_temp->serverid == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4085 if ((asession_temp->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4086 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4087 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4088 return;
4089 }
4090 asession_temp->serverid[0] = '\0';
4091 }
4092
4093 if (asession_temp->serverid[0] == '\0')
4094 memcpy(asession_temp->serverid, t->srv->id, server_id_len);
4095
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]4096 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4097 asession_temp->request_count++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4098#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4099 Alert("manage_server_side_cookies\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4100 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4101#endif
4102 }/* end if ((t->proxy->appsession_name != NULL) ... */
4103 break; /* we don't want to loop again since there cannot be another cookie on the same line */
4104 } /* we're now at the end of the cookie value */
4105
4106 /* keep the link from this header to next one */
4107 old_idx = cur_idx;
4108 } /* end of cookie processing on this header */
4109}
4110
4111
4112
4113/*
4114 * Check if response is cacheable or not. Updates t->flags.
4115 */
4116void check_response_for_cacheability(struct session *t, struct buffer *rtr)
4117{
4118 struct http_txn *txn = &t->txn;
4119 char *p1, *p2;
4120
4121 char *cur_ptr, *cur_end, *cur_next;
4122 int cur_idx;
4123
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]4124 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4125 return;
4126
4127 /* Iterate through the headers.
4128 * we start with the start line.
4129 */
4130 cur_idx = 0;
4131 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4132
4133 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4134 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4135 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4136
4137 cur_hdr = &txn->hdr_idx.v[cur_idx];
4138 cur_ptr = cur_next;
4139 cur_end = cur_ptr + cur_hdr->len;
4140 cur_next = cur_end + cur_hdr->cr + 1;
4141
4142 /* We have one full header between cur_ptr and cur_end, and the
4143 * next header starts at cur_next. We're only interested in
4144 * "Cookie:" headers.
4145 */
4146
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4147 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
4148 if (val) {
4149 if ((cur_end - (cur_ptr + val) >= 8) &&
4150 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
4151 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
4152 return;
4153 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4154 }
4155
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4156 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
4157 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4158 continue;
4159
4160 /* OK, right now we know we have a cache-control header at cur_ptr */
4161
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4162 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4163
4164 if (p1 >= cur_end) /* no more info */
4165 continue;
4166
4167 /* p1 is at the beginning of the value */
4168 p2 = p1;
4169
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4170 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4171 p2++;
4172
4173 /* we have a complete value between p1 and p2 */
4174 if (p2 < cur_end && *p2 == '=') {
4175 /* we have something of the form no-cache="set-cookie" */
4176 if ((cur_end - p1 >= 21) &&
4177 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
4178 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4179 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4180 continue;
4181 }
4182
4183 /* OK, so we know that either p2 points to the end of string or to a comma */
4184 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
4185 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
4186 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
4187 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4188 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4189 return;
4190 }
4191
4192 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4193 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4194 continue;
4195 }
4196 }
4197}
4198
4199
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4200/*
4201 * Try to retrieve a known appsession in the URI, then the associated server.
4202 * If the server is found, it's assigned to the session.
4203 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4204void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4205{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4206 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4207 appsess *asession_temp = NULL;
4208 appsess local_asession;
4209 char *request_line;
4210
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4211 if (t->be->appsession_name == NULL ||
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]4212 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST) ||
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4213 (request_line = memchr(begin, ';', len)) == NULL ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4214 ((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]4215 return;
4216
4217 /* skip ';' */
4218 request_line++;
4219
4220 /* look if we have a jsessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4221 if (strncasecmp(request_line, t->be->appsession_name, t->be->appsession_name_len) != 0)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4222 return;
4223
4224 /* skip jsessionid= */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4225 request_line += t->be->appsession_name_len + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4226
4227 /* First try if we already have an appsession */
4228 asession_temp = &local_asession;
4229
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4230 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4231 Alert("Not enough memory process_cli():asession_temp->sessid:calloc().\n");
4232 send_log(t->be, LOG_ALERT, "Not enough Memory process_cli():asession_temp->sessid:calloc().\n");
4233 return;
4234 }
4235
4236 /* Copy the sessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4237 memcpy(asession_temp->sessid, request_line, t->be->appsession_len);
4238 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4239 asession_temp->serverid = NULL;
4240
4241 /* only do insert, if lookup fails */
Ryan Warnick6d0b1fa2008-02-17 11:24:35 +0100[diff] [blame]4242 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
4243 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4244 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4245 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4246 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4247 Alert("Not enough memory process_cli():asession:calloc().\n");
4248 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4249 return;
4250 }
4251 asession_temp->sessid = local_asession.sessid;
4252 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4253 asession_temp->request_count=0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4254 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4255 }
4256 else {
4257 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4258 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4259 }
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4260
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]4261 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4262 asession_temp->request_count++;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4263
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4264#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4265 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4266 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4267#endif
4268 if (asession_temp->serverid == NULL) {
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4269 /* TODO redispatch request */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4270 Alert("Found Application Session without matching server.\n");
4271 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4272 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4273 while (srv) {
4274 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4275 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4276 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4277 txn->flags &= ~TX_CK_MASK;
4278 txn->flags |= TX_CK_VALID;
4279 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4280 t->srv = srv;
4281 break;
4282 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4283 txn->flags &= ~TX_CK_MASK;
4284 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4285 }
4286 }
4287 srv = srv->next;
4288 }
4289 }
4290}
4291
4292
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4293/*
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4294 * In a GET or HEAD request, check if the requested URI matches the stats uri
4295 * for the current backend, and if an authorization has been passed and is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4296 *
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4297 * 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]4298 * 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]4299 * produce_content() can be called to start sending data.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4300 *
4301 * Returns 1 if the session's state changes, otherwise 0.
4302 */
4303int stats_check_uri_auth(struct session *t, struct proxy *backend)
4304{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4305 struct http_txn *txn = &t->txn;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4306 struct uri_auth *uri_auth = backend->uri_auth;
4307 struct user_auth *user;
4308 int authenticated, cur_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4309 char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4310
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4311 memset(&t->data_ctx.stats, 0, sizeof(t->data_ctx.stats));
4312
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4313 /* check URI size */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4314 if (uri_auth->uri_len > txn->req.sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4315 return 0;
4316
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4317 h = t->req->data + txn->req.sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4318
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4319 /* the URI is in h */
4320 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4321 return 0;
4322
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4323 h += uri_auth->uri_len;
4324 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 3) {
4325 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4326 t->data_ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4327 break;
4328 }
4329 h++;
4330 }
4331
4332 if (uri_auth->refresh) {
4333 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4334 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 10) {
4335 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4336 t->data_ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4337 break;
4338 }
4339 h++;
4340 }
4341 }
4342
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]4343 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4344 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 4) {
4345 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4346 t->data_ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]4347 break;
4348 }
4349 h++;
4350 }
4351
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4352 t->data_ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
4353
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4354 /* we are in front of a interceptable URI. Let's check
4355 * if there's an authentication and if it's valid.
4356 */
4357 user = uri_auth->users;
4358 if (!user) {
4359 /* no user auth required, it's OK */
4360 authenticated = 1;
4361 } else {
4362 authenticated = 0;
4363
4364 /* a user list is defined, we have to check.
4365 * skip 21 chars for "Authorization: Basic ".
4366 */
4367
4368 /* FIXME: this should move to an earlier place */
4369 cur_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4370 h = t->req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
4371 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4372 int len = txn->hdr_idx.v[cur_idx].len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4373 if (len > 14 &&
4374 !strncasecmp("Authorization:", h, 14)) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4375 txn->auth_hdr.str = h;
4376 txn->auth_hdr.len = len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4377 break;
4378 }
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4379 h += len + txn->hdr_idx.v[cur_idx].cr + 1;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4380 }
4381
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4382 if (txn->auth_hdr.len < 21 ||
4383 memcmp(txn->auth_hdr.str + 14, " Basic ", 7))
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4384 user = NULL;
4385
4386 while (user) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4387 if ((txn->auth_hdr.len == user->user_len + 14 + 7)
4388 && !memcmp(txn->auth_hdr.str + 14 + 7,
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4389 user->user_pwd, user->user_len)) {
4390 authenticated = 1;
4391 break;
4392 }
4393 user = user->next;
4394 }
4395 }
4396
4397 if (!authenticated) {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4398 struct chunk msg;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4399
4400 /* no need to go further */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4401 msg.str = trash;
4402 msg.len = sprintf(trash, HTTP_401_fmt, uri_auth->auth_realm);
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4403 txn->status = 401;
Willy Tarreaudded32d2008-11-30 19:48:07 +0100[diff] [blame]4404 stream_int_retnclose(t->req->prod, &msg);
Willy Tarreauf8533202008-08-16 14:55:08 +0200[diff] [blame]4405 trace_term(t, TT_HTTP_URI_1);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]4406 t->req->analysers = 0;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4407 if (!(t->flags & SN_ERR_MASK))
4408 t->flags |= SN_ERR_PRXCOND;
4409 if (!(t->flags & SN_FINST_MASK))
4410 t->flags |= SN_FINST_R;
4411 return 1;
4412 }
4413
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4414 /* The request is valid, the user is authenticated. Let's start sending
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4415 * data.
4416 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]4417 buffer_write_dis(t->req);
Willy Tarreau72b179a2008-08-28 16:01:32 +0200[diff] [blame]4418 buffer_shutw_now(t->req);
4419 buffer_shutr_now(t->rep);
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]4420 t->logs.tv_request = now;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4421 t->data_source = DATA_SRC_STATS;
4422 t->data_state = DATA_ST_INIT;
Willy Tarreau91e99932008-06-30 07:51:00 +0200[diff] [blame]4423 t->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]4424 buffer_install_hijacker(t, t->rep, produce_content);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4425 return 1;
4426}
4427
4428
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4429/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4430 * Print a debug line with a header
4431 */
4432void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
4433{
4434 int len, max;
4435 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4436 dir, (unsigned short)t->req->prod->fd, (unsigned short)t->req->cons->fd);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4437 max = end - start;
4438 UBOUND(max, sizeof(trash) - len - 1);
4439 len += strlcpy2(trash + len, start, max + 1);
4440 trash[len++] = '\n';
4441 write(1, trash, len);
4442}
4443
4444
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4445/************************************************************************/
4446/* The code below is dedicated to ACL parsing and matching */
4447/************************************************************************/
4448
4449
4450
4451
4452/* 1. Check on METHOD
4453 * We use the pre-parsed method if it is known, and store its number as an
4454 * integer. If it is unknown, we use the pointer and the length.
4455 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4456static int acl_parse_meth(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4457{
4458 int len, meth;
4459
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4460 len = strlen(*text);
4461 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4462
4463 pattern->val.i = meth;
4464 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4465 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4466 if (!pattern->ptr.str)
4467 return 0;
4468 pattern->len = len;
4469 }
4470 return 1;
4471}
4472
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4473static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4474acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, int dir,
4475 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4476{
4477 int meth;
4478 struct http_txn *txn = l7;
4479
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4480 if (!txn)
4481 return 0;
4482
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4483 if (txn->req.msg_state != HTTP_MSG_BODY)
4484 return 0;
4485
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4486 meth = txn->meth;
4487 test->i = meth;
4488 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4489 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4490 /* ensure the indexes are not affected */
4491 return 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4492 test->len = txn->req.sl.rq.m_l;
4493 test->ptr = txn->req.sol;
4494 }
4495 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4496 return 1;
4497}
4498
4499static int acl_match_meth(struct acl_test *test, struct acl_pattern *pattern)
4500{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4501 int icase;
4502
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4503 if (test->i != pattern->val.i)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4504 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4505
4506 if (test->i != HTTP_METH_OTHER)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4507 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4508
4509 /* Other method, we must compare the strings */
4510 if (pattern->len != test->len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4511 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4512
4513 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
4514 if ((icase && strncasecmp(pattern->ptr.str, test->ptr, test->len) != 0) ||
4515 (!icase && strncmp(pattern->ptr.str, test->ptr, test->len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4516 return ACL_PAT_FAIL;
4517 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4518}
4519
4520/* 2. Check on Request/Status Version
4521 * We simply compare strings here.
4522 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4523static int acl_parse_ver(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4524{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4525 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4526 if (!pattern->ptr.str)
4527 return 0;
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4528 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4529 return 1;
4530}
4531
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4532static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4533acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, int dir,
4534 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4535{
4536 struct http_txn *txn = l7;
4537 char *ptr;
4538 int len;
4539
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4540 if (!txn)
4541 return 0;
4542
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4543 if (txn->req.msg_state != HTTP_MSG_BODY)
4544 return 0;
4545
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4546 len = txn->req.sl.rq.v_l;
4547 ptr = txn->req.sol + txn->req.sl.rq.v - txn->req.som;
4548
4549 while ((len-- > 0) && (*ptr++ != '/'));
4550 if (len <= 0)
4551 return 0;
4552
4553 test->ptr = ptr;
4554 test->len = len;
4555
4556 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4557 return 1;
4558}
4559
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4560static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4561acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, int dir,
4562 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4563{
4564 struct http_txn *txn = l7;
4565 char *ptr;
4566 int len;
4567
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4568 if (!txn)
4569 return 0;
4570
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4571 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4572 return 0;
4573
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4574 len = txn->rsp.sl.st.v_l;
4575 ptr = txn->rsp.sol;
4576
4577 while ((len-- > 0) && (*ptr++ != '/'));
4578 if (len <= 0)
4579 return 0;
4580
4581 test->ptr = ptr;
4582 test->len = len;
4583
4584 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4585 return 1;
4586}
4587
4588/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4589static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4590acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, int dir,
4591 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4592{
4593 struct http_txn *txn = l7;
4594 char *ptr;
4595 int len;
4596
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4597 if (!txn)
4598 return 0;
4599
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4600 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4601 return 0;
4602
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4603 len = txn->rsp.sl.st.c_l;
4604 ptr = txn->rsp.sol + txn->rsp.sl.st.c - txn->rsp.som;
4605
4606 test->i = __strl2ui(ptr, len);
4607 test->flags = ACL_TEST_F_VOL_1ST;
4608 return 1;
4609}
4610
4611/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4612static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4613acl_fetch_url(struct proxy *px, struct session *l4, void *l7, int dir,
4614 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4615{
4616 struct http_txn *txn = l7;
4617
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4618 if (!txn)
4619 return 0;
4620
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4621 if (txn->req.msg_state != HTTP_MSG_BODY)
4622 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4623
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4624 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4625 /* ensure the indexes are not affected */
4626 return 0;
4627
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4628 test->len = txn->req.sl.rq.u_l;
4629 test->ptr = txn->req.sol + txn->req.sl.rq.u;
4630
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]4631 /* we do not need to set READ_ONLY because the data is in a buffer */
4632 test->flags = ACL_TEST_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4633 return 1;
4634}
4635
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4636static int
4637acl_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, int dir,
4638 struct acl_expr *expr, struct acl_test *test)
4639{
4640 struct http_txn *txn = l7;
4641
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4642 if (!txn)
4643 return 0;
4644
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4645 if (txn->req.msg_state != HTTP_MSG_BODY)
4646 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4647
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4648 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4649 /* ensure the indexes are not affected */
4650 return 0;
4651
4652 /* Parse HTTP request */
4653 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
4654 test->ptr = (void *)&((struct sockaddr_in *)&l4->srv_addr)->sin_addr;
4655 test->i = AF_INET;
4656
4657 /*
4658 * If we are parsing url in frontend space, we prepare backend stage
4659 * to not parse again the same url ! optimization lazyness...
4660 */
4661 if (px->options & PR_O_HTTP_PROXY)
4662 l4->flags |= SN_ADDR_SET;
4663
4664 test->flags = ACL_TEST_F_READ_ONLY;
4665 return 1;
4666}
4667
4668static int
4669acl_fetch_url_port(struct proxy *px, struct session *l4, void *l7, int dir,
4670 struct acl_expr *expr, struct acl_test *test)
4671{
4672 struct http_txn *txn = l7;
4673
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4674 if (!txn)
4675 return 0;
4676
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4677 if (txn->req.msg_state != HTTP_MSG_BODY)
4678 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4679
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4680 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4681 /* ensure the indexes are not affected */
4682 return 0;
4683
4684 /* Same optimization as url_ip */
4685 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
4686 test->i = ntohs(((struct sockaddr_in *)&l4->srv_addr)->sin_port);
4687
4688 if (px->options & PR_O_HTTP_PROXY)
4689 l4->flags |= SN_ADDR_SET;
4690
4691 test->flags = ACL_TEST_F_READ_ONLY;
4692 return 1;
4693}
4694
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4695/* 5. Check on HTTP header. A pointer to the beginning of the value is returned.
4696 * This generic function is used by both acl_fetch_chdr() and acl_fetch_shdr().
4697 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4698static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4699acl_fetch_hdr(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4700 struct acl_expr *expr, struct acl_test *test)
4701{
4702 struct http_txn *txn = l7;
4703 struct hdr_idx *idx = &txn->hdr_idx;
4704 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4705
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4706 if (!txn)
4707 return 0;
4708
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4709 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
4710 /* search for header from the beginning */
4711 ctx->idx = 0;
4712
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4713 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
4714 test->flags |= ACL_TEST_F_FETCH_MORE;
4715 test->flags |= ACL_TEST_F_VOL_HDR;
4716 test->len = ctx->vlen;
4717 test->ptr = (char *)ctx->line + ctx->val;
4718 return 1;
4719 }
4720
4721 test->flags &= ~ACL_TEST_F_FETCH_MORE;
4722 test->flags |= ACL_TEST_F_VOL_HDR;
4723 return 0;
4724}
4725
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4726static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4727acl_fetch_chdr(struct proxy *px, struct session *l4, void *l7, int dir,
4728 struct acl_expr *expr, struct acl_test *test)
4729{
4730 struct http_txn *txn = l7;
4731
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4732 if (!txn)
4733 return 0;
4734
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4735 if (txn->req.msg_state != HTTP_MSG_BODY)
4736 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4737
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4738 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4739 /* ensure the indexes are not affected */
4740 return 0;
4741
4742 return acl_fetch_hdr(px, l4, txn, txn->req.sol, expr, test);
4743}
4744
4745static int
4746acl_fetch_shdr(struct proxy *px, struct session *l4, void *l7, int dir,
4747 struct acl_expr *expr, struct acl_test *test)
4748{
4749 struct http_txn *txn = l7;
4750
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4751 if (!txn)
4752 return 0;
4753
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4754 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4755 return 0;
4756
4757 return acl_fetch_hdr(px, l4, txn, txn->rsp.sol, expr, test);
4758}
4759
4760/* 6. Check on HTTP header count. The number of occurrences is returned.
4761 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
4762 */
4763static int
4764acl_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4765 struct acl_expr *expr, struct acl_test *test)
4766{
4767 struct http_txn *txn = l7;
4768 struct hdr_idx *idx = &txn->hdr_idx;
4769 struct hdr_ctx ctx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4770 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4771
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4772 if (!txn)
4773 return 0;
4774
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4775 ctx.idx = 0;
4776 cnt = 0;
4777 while (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, &ctx))
4778 cnt++;
4779
4780 test->i = cnt;
4781 test->flags = ACL_TEST_F_VOL_HDR;
4782 return 1;
4783}
4784
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4785static int
4786acl_fetch_chdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
4787 struct acl_expr *expr, struct acl_test *test)
4788{
4789 struct http_txn *txn = l7;
4790
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4791 if (!txn)
4792 return 0;
4793
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4794 if (txn->req.msg_state != HTTP_MSG_BODY)
4795 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4796
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4797 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4798 /* ensure the indexes are not affected */
4799 return 0;
4800
4801 return acl_fetch_hdr_cnt(px, l4, txn, txn->req.sol, expr, test);
4802}
4803
4804static int
4805acl_fetch_shdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
4806 struct acl_expr *expr, struct acl_test *test)
4807{
4808 struct http_txn *txn = l7;
4809
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4810 if (!txn)
4811 return 0;
4812
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4813 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4814 return 0;
4815
4816 return acl_fetch_hdr_cnt(px, l4, txn, txn->rsp.sol, expr, test);
4817}
4818
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4819/* 7. Check on HTTP header's integer value. The integer value is returned.
4820 * FIXME: the type is 'int', it may not be appropriate for everything.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4821 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4822 */
4823static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4824acl_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4825 struct acl_expr *expr, struct acl_test *test)
4826{
4827 struct http_txn *txn = l7;
4828 struct hdr_idx *idx = &txn->hdr_idx;
4829 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4830
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4831 if (!txn)
4832 return 0;
4833
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4834 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
4835 /* search for header from the beginning */
4836 ctx->idx = 0;
4837
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4838 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
4839 test->flags |= ACL_TEST_F_FETCH_MORE;
4840 test->flags |= ACL_TEST_F_VOL_HDR;
4841 test->i = strl2ic((char *)ctx->line + ctx->val, ctx->vlen);
4842 return 1;
4843 }
4844
4845 test->flags &= ~ACL_TEST_F_FETCH_MORE;
4846 test->flags |= ACL_TEST_F_VOL_HDR;
4847 return 0;
4848}
4849
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4850static int
4851acl_fetch_chdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
4852 struct acl_expr *expr, struct acl_test *test)
4853{
4854 struct http_txn *txn = l7;
4855
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4856 if (!txn)
4857 return 0;
4858
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4859 if (txn->req.msg_state != HTTP_MSG_BODY)
4860 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4861
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4862 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4863 /* ensure the indexes are not affected */
4864 return 0;
4865
4866 return acl_fetch_hdr_val(px, l4, txn, txn->req.sol, expr, test);
4867}
4868
4869static int
4870acl_fetch_shdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
4871 struct acl_expr *expr, struct acl_test *test)
4872{
4873 struct http_txn *txn = l7;
4874
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4875 if (!txn)
4876 return 0;
4877
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4878 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4879 return 0;
4880
4881 return acl_fetch_hdr_val(px, l4, txn, txn->rsp.sol, expr, test);
4882}
4883
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]4884/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
4885 * the first '/' after the possible hostname, and ends before the possible '?'.
4886 */
4887static int
4888acl_fetch_path(struct proxy *px, struct session *l4, void *l7, int dir,
4889 struct acl_expr *expr, struct acl_test *test)
4890{
4891 struct http_txn *txn = l7;
4892 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4893
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4894 if (!txn)
4895 return 0;
4896
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4897 if (txn->req.msg_state != HTTP_MSG_BODY)
4898 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4899
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4900 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4901 /* ensure the indexes are not affected */
4902 return 0;
4903
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4904 end = txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
4905 ptr = http_get_path(txn);
4906 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]4907 return 0;
4908
4909 /* OK, we got the '/' ! */
4910 test->ptr = ptr;
4911
4912 while (ptr < end && *ptr != '?')
4913 ptr++;
4914
4915 test->len = ptr - test->ptr;
4916
4917 /* we do not need to set READ_ONLY because the data is in a buffer */
4918 test->flags = ACL_TEST_F_VOL_1ST;
4919 return 1;
4920}
4921
4922
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4923
4924/************************************************************************/
4925/* All supported keywords must be declared here. */
4926/************************************************************************/
4927
4928/* Note: must not be declared <const> as its list will be overwritten */
4929static struct acl_kw_list acl_kws = {{ },{
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]4930 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT },
4931 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE },
4932 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE },
4933 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4934
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]4935 { "url", acl_parse_str, acl_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE },
4936 { "url_beg", acl_parse_str, acl_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
4937 { "url_end", acl_parse_str, acl_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE },
4938 { "url_sub", acl_parse_str, acl_fetch_url, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
4939 { "url_dir", acl_parse_str, acl_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
4940 { "url_dom", acl_parse_str, acl_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
4941 { "url_reg", acl_parse_reg, acl_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
4942 { "url_ip", acl_parse_ip, acl_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE },
4943 { "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]4944
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]4945 /* note: we should set hdr* to use ACL_USE_HDR_VOLATILE, and chdr* to use L7REQ_VOLATILE */
4946 { "hdr", acl_parse_str, acl_fetch_chdr, acl_match_str, ACL_USE_L7REQ_VOLATILE },
4947 { "hdr_reg", acl_parse_reg, acl_fetch_chdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
4948 { "hdr_beg", acl_parse_str, acl_fetch_chdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
4949 { "hdr_end", acl_parse_str, acl_fetch_chdr, acl_match_end, ACL_USE_L7REQ_VOLATILE },
4950 { "hdr_sub", acl_parse_str, acl_fetch_chdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
4951 { "hdr_dir", acl_parse_str, acl_fetch_chdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
4952 { "hdr_dom", acl_parse_str, acl_fetch_chdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
4953 { "hdr_cnt", acl_parse_int, acl_fetch_chdr_cnt,acl_match_int, ACL_USE_L7REQ_VOLATILE },
4954 { "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]4955
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]4956 { "shdr", acl_parse_str, acl_fetch_shdr, acl_match_str, ACL_USE_L7RTR_VOLATILE },
4957 { "shdr_reg", acl_parse_reg, acl_fetch_shdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE },
4958 { "shdr_beg", acl_parse_str, acl_fetch_shdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE },
4959 { "shdr_end", acl_parse_str, acl_fetch_shdr, acl_match_end, ACL_USE_L7RTR_VOLATILE },
4960 { "shdr_sub", acl_parse_str, acl_fetch_shdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE },
4961 { "shdr_dir", acl_parse_str, acl_fetch_shdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE },
4962 { "shdr_dom", acl_parse_str, acl_fetch_shdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE },
4963 { "shdr_cnt", acl_parse_int, acl_fetch_shdr_cnt,acl_match_int, ACL_USE_L7RTR_VOLATILE },
4964 { "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]4965
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]4966 { "path", acl_parse_str, acl_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE },
4967 { "path_reg", acl_parse_reg, acl_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
4968 { "path_beg", acl_parse_str, acl_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
4969 { "path_end", acl_parse_str, acl_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE },
4970 { "path_sub", acl_parse_str, acl_fetch_path, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
4971 { "path_dir", acl_parse_str, acl_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
4972 { "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]4973
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]4974 { NULL, NULL, NULL, NULL },
4975
4976#if 0
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4977 { "line", acl_parse_str, acl_fetch_line, acl_match_str },
4978 { "line_reg", acl_parse_reg, acl_fetch_line, acl_match_reg },
4979 { "line_beg", acl_parse_str, acl_fetch_line, acl_match_beg },
4980 { "line_end", acl_parse_str, acl_fetch_line, acl_match_end },
4981 { "line_sub", acl_parse_str, acl_fetch_line, acl_match_sub },
4982 { "line_dir", acl_parse_str, acl_fetch_line, acl_match_dir },
4983 { "line_dom", acl_parse_str, acl_fetch_line, acl_match_dom },
4984
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4985 { "cook", acl_parse_str, acl_fetch_cook, acl_match_str },
4986 { "cook_reg", acl_parse_reg, acl_fetch_cook, acl_match_reg },
4987 { "cook_beg", acl_parse_str, acl_fetch_cook, acl_match_beg },
4988 { "cook_end", acl_parse_str, acl_fetch_cook, acl_match_end },
4989 { "cook_sub", acl_parse_str, acl_fetch_cook, acl_match_sub },
4990 { "cook_dir", acl_parse_str, acl_fetch_cook, acl_match_dir },
4991 { "cook_dom", acl_parse_str, acl_fetch_cook, acl_match_dom },
4992 { "cook_pst", acl_parse_none, acl_fetch_cook, acl_match_pst },
4993
4994 { "auth_user", acl_parse_str, acl_fetch_user, acl_match_str },
4995 { "auth_regex", acl_parse_reg, acl_fetch_user, acl_match_reg },
4996 { "auth_clear", acl_parse_str, acl_fetch_auth, acl_match_str },
4997 { "auth_md5", acl_parse_str, acl_fetch_auth, acl_match_md5 },
4998 { NULL, NULL, NULL, NULL },
4999#endif
5000}};
5001
5002
5003__attribute__((constructor))
5004static void __http_protocol_init(void)
5005{
5006 acl_register_keywords(&acl_kws);
5007}
5008
5009
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5010/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5011 * Local variables:
5012 * c-indent-level: 8
5013 * c-basic-offset: 8
5014 * End:
5015 */