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git01.mediatek.com / haproxy / 2e1dd3d21350ad5eef7f688eee0c75e140430190 / . / src / proto_http.c
blob: a159769b6cf04184701ff7aba8fd31487a9d3112 [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>
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]44#include <proto/client.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]45#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]46#include <proto/fd.h>
47#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]48#include <proto/hdr_idx.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]49#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]50#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]51#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]52#include <proto/queue.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]53#include <proto/server.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]54#include <proto/session.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]55#include <proto/stream_interface.h>
Willy Tarreau2d212792008-08-27 21:41:35 +0200[diff] [blame]56#include <proto/stream_sock.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]57#include <proto/task.h>
58
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]59/* This is used by remote monitoring */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]60const char HTTP_200[] =
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]61 "HTTP/1.0 200 OK\r\n"
62 "Cache-Control: no-cache\r\n"
63 "Connection: close\r\n"
64 "Content-Type: text/html\r\n"
65 "\r\n"
66 "<html><body><h1>200 OK</h1>\nHAProxy: service ready.\n</body></html>\n";
67
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]68const struct chunk http_200_chunk = {
69 .str = (char *)&HTTP_200,
70 .len = sizeof(HTTP_200)-1
71};
72
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]73const char *HTTP_301 =
74 "HTTP/1.0 301 Moved Permantenly\r\n"
75 "Cache-Control: no-cache\r\n"
76 "Connection: close\r\n"
77 "Location: "; /* not terminated since it will be concatenated with the URL */
78
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]79const char *HTTP_302 =
80 "HTTP/1.0 302 Found\r\n"
81 "Cache-Control: no-cache\r\n"
82 "Connection: close\r\n"
83 "Location: "; /* not terminated since it will be concatenated with the URL */
84
85/* same as 302 except that the browser MUST retry with the GET method */
86const char *HTTP_303 =
87 "HTTP/1.0 303 See Other\r\n"
88 "Cache-Control: no-cache\r\n"
89 "Connection: close\r\n"
90 "Location: "; /* not terminated since it will be concatenated with the URL */
91
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]92/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
93const char *HTTP_401_fmt =
94 "HTTP/1.0 401 Unauthorized\r\n"
95 "Cache-Control: no-cache\r\n"
96 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]97 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]98 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
99 "\r\n"
100 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
101
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]102
103const int http_err_codes[HTTP_ERR_SIZE] = {
104 [HTTP_ERR_400] = 400,
105 [HTTP_ERR_403] = 403,
106 [HTTP_ERR_408] = 408,
107 [HTTP_ERR_500] = 500,
108 [HTTP_ERR_502] = 502,
109 [HTTP_ERR_503] = 503,
110 [HTTP_ERR_504] = 504,
111};
112
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]113static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]114 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]115 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]116 "Cache-Control: no-cache\r\n"
117 "Connection: close\r\n"
118 "Content-Type: text/html\r\n"
119 "\r\n"
120 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
121
122 [HTTP_ERR_403] =
123 "HTTP/1.0 403 Forbidden\r\n"
124 "Cache-Control: no-cache\r\n"
125 "Connection: close\r\n"
126 "Content-Type: text/html\r\n"
127 "\r\n"
128 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
129
130 [HTTP_ERR_408] =
131 "HTTP/1.0 408 Request Time-out\r\n"
132 "Cache-Control: no-cache\r\n"
133 "Connection: close\r\n"
134 "Content-Type: text/html\r\n"
135 "\r\n"
136 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
137
138 [HTTP_ERR_500] =
139 "HTTP/1.0 500 Server Error\r\n"
140 "Cache-Control: no-cache\r\n"
141 "Connection: close\r\n"
142 "Content-Type: text/html\r\n"
143 "\r\n"
144 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
145
146 [HTTP_ERR_502] =
147 "HTTP/1.0 502 Bad Gateway\r\n"
148 "Cache-Control: no-cache\r\n"
149 "Connection: close\r\n"
150 "Content-Type: text/html\r\n"
151 "\r\n"
152 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
153
154 [HTTP_ERR_503] =
155 "HTTP/1.0 503 Service Unavailable\r\n"
156 "Cache-Control: no-cache\r\n"
157 "Connection: close\r\n"
158 "Content-Type: text/html\r\n"
159 "\r\n"
160 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
161
162 [HTTP_ERR_504] =
163 "HTTP/1.0 504 Gateway Time-out\r\n"
164 "Cache-Control: no-cache\r\n"
165 "Connection: close\r\n"
166 "Content-Type: text/html\r\n"
167 "\r\n"
168 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
169
170};
171
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]172/* We must put the messages here since GCC cannot initialize consts depending
173 * on strlen().
174 */
175struct chunk http_err_chunks[HTTP_ERR_SIZE];
176
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]177#define FD_SETS_ARE_BITFIELDS
178#ifdef FD_SETS_ARE_BITFIELDS
179/*
180 * This map is used with all the FD_* macros to check whether a particular bit
181 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
182 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
183 * byte should be encoded. Be careful to always pass bytes from 0 to 255
184 * exclusively to the macros.
185 */
186fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
187fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
188
189#else
190#error "Check if your OS uses bitfields for fd_sets"
191#endif
192
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]193void init_proto_http()
194{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]195 int i;
196 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]197 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]198
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]199 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
200 if (!http_err_msgs[msg]) {
201 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
202 abort();
203 }
204
205 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
206 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
207 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]208
209 /* initialize the log header encoding map : '{|}"#' should be encoded with
210 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
211 * URL encoding only requires '"', '#' to be encoded as well as non-
212 * printable characters above.
213 */
214 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
215 memset(url_encode_map, 0, sizeof(url_encode_map));
216 for (i = 0; i < 32; i++) {
217 FD_SET(i, hdr_encode_map);
218 FD_SET(i, url_encode_map);
219 }
220 for (i = 127; i < 256; i++) {
221 FD_SET(i, hdr_encode_map);
222 FD_SET(i, url_encode_map);
223 }
224
225 tmp = "\"#{|}";
226 while (*tmp) {
227 FD_SET(*tmp, hdr_encode_map);
228 tmp++;
229 }
230
231 tmp = "\"#";
232 while (*tmp) {
233 FD_SET(*tmp, url_encode_map);
234 tmp++;
235 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]236
237 /* memory allocations */
238 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]239 pool2_capture = create_pool("capture", CAPTURE_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]240}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]241
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]242/*
243 * We have 26 list of methods (1 per first letter), each of which can have
244 * up to 3 entries (2 valid, 1 null).
245 */
246struct http_method_desc {
247 http_meth_t meth;
248 int len;
249 const char text[8];
250};
251
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]252const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]253 ['C' - 'A'] = {
254 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
255 },
256 ['D' - 'A'] = {
257 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
258 },
259 ['G' - 'A'] = {
260 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
261 },
262 ['H' - 'A'] = {
263 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
264 },
265 ['P' - 'A'] = {
266 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
267 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
268 },
269 ['T' - 'A'] = {
270 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
271 },
272 /* rest is empty like this :
273 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
274 */
275};
276
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]277/* 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]278 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]279 * RFC2616 for those chars.
280 */
281
282const char http_is_spht[256] = {
283 [' '] = 1, ['\t'] = 1,
284};
285
286const char http_is_crlf[256] = {
287 ['\r'] = 1, ['\n'] = 1,
288};
289
290const char http_is_lws[256] = {
291 [' '] = 1, ['\t'] = 1,
292 ['\r'] = 1, ['\n'] = 1,
293};
294
295const char http_is_sep[256] = {
296 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
297 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
298 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
299 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
300 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
301};
302
303const char http_is_ctl[256] = {
304 [0 ... 31] = 1,
305 [127] = 1,
306};
307
308/*
309 * A token is any ASCII char that is neither a separator nor a CTL char.
310 * Do not overwrite values in assignment since gcc-2.95 will not handle
311 * them correctly. Instead, define every non-CTL char's status.
312 */
313const char http_is_token[256] = {
314 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
315 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
316 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
317 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
318 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
319 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
320 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
321 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
322 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
323 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
324 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
325 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
326 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
327 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
328 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
329 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
330 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
331 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
332 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
333 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
334 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
335 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
336 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
337 ['|'] = 1, ['}'] = 0, ['~'] = 1,
338};
339
340
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]341/*
342 * An http ver_token is any ASCII which can be found in an HTTP version,
343 * which includes 'H', 'T', 'P', '/', '.' and any digit.
344 */
345const char http_is_ver_token[256] = {
346 ['.'] = 1, ['/'] = 1,
347 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
348 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
349 ['H'] = 1, ['P'] = 1, ['T'] = 1,
350};
351
352
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]353/*
354 * Adds a header and its CRLF at the tail of buffer <b>, just before the last
355 * CRLF. Text length is measured first, so it cannot be NULL.
356 * The header is also automatically added to the index <hdr_idx>, and the end
357 * of headers is automatically adjusted. The number of bytes added is returned
358 * on success, otherwise <0 is returned indicating an error.
359 */
360int http_header_add_tail(struct buffer *b, struct http_msg *msg,
361 struct hdr_idx *hdr_idx, const char *text)
362{
363 int bytes, len;
364
365 len = strlen(text);
366 bytes = buffer_insert_line2(b, b->data + msg->eoh, text, len);
367 if (!bytes)
368 return -1;
369 msg->eoh += bytes;
370 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
371}
372
373/*
374 * Adds a header and its CRLF at the tail of buffer <b>, just before the last
375 * CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
376 * the buffer is only opened and the space reserved, but nothing is copied.
377 * The header is also automatically added to the index <hdr_idx>, and the end
378 * of headers is automatically adjusted. The number of bytes added is returned
379 * on success, otherwise <0 is returned indicating an error.
380 */
381int http_header_add_tail2(struct buffer *b, struct http_msg *msg,
382 struct hdr_idx *hdr_idx, const char *text, int len)
383{
384 int bytes;
385
386 bytes = buffer_insert_line2(b, b->data + msg->eoh, text, len);
387 if (!bytes)
388 return -1;
389 msg->eoh += bytes;
390 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
391}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]392
393/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]394 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
395 * If so, returns the position of the first non-space character relative to
396 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
397 * to return a pointer to the place after the first space. Returns 0 if the
398 * header name does not match. Checks are case-insensitive.
399 */
400int http_header_match2(const char *hdr, const char *end,
401 const char *name, int len)
402{
403 const char *val;
404
405 if (hdr + len >= end)
406 return 0;
407 if (hdr[len] != ':')
408 return 0;
409 if (strncasecmp(hdr, name, len) != 0)
410 return 0;
411 val = hdr + len + 1;
412 while (val < end && HTTP_IS_SPHT(*val))
413 val++;
414 if ((val >= end) && (len + 2 <= end - hdr))
415 return len + 2; /* we may replace starting from second space */
416 return val - hdr;
417}
418
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]419/* Find the end of the header value contained between <s> and <e>.
420 * See RFC2616, par 2.2 for more information. Note that it requires
421 * a valid header to return a valid result.
422 */
423const char *find_hdr_value_end(const char *s, const char *e)
424{
425 int quoted, qdpair;
426
427 quoted = qdpair = 0;
428 for (; s < e; s++) {
429 if (qdpair) qdpair = 0;
430 else if (quoted && *s == '\\') qdpair = 1;
431 else if (quoted && *s == '"') quoted = 0;
432 else if (*s == '"') quoted = 1;
433 else if (*s == ',') return s;
434 }
435 return s;
436}
437
438/* Find the first or next occurrence of header <name> in message buffer <sol>
439 * using headers index <idx>, and return it in the <ctx> structure. This
440 * structure holds everything necessary to use the header and find next
441 * occurrence. If its <idx> member is 0, the header is searched from the
442 * beginning. Otherwise, the next occurrence is returned. The function returns
443 * 1 when it finds a value, and 0 when there is no more.
444 */
445int http_find_header2(const char *name, int len,
446 const char *sol, struct hdr_idx *idx,
447 struct hdr_ctx *ctx)
448{
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]449 const char *eol, *sov;
450 int cur_idx;
451
452 if (ctx->idx) {
453 /* We have previously returned a value, let's search
454 * another one on the same line.
455 */
456 cur_idx = ctx->idx;
457 sol = ctx->line;
458 sov = sol + ctx->val + ctx->vlen;
459 eol = sol + idx->v[cur_idx].len;
460
461 if (sov >= eol)
462 /* no more values in this header */
463 goto next_hdr;
464
465 /* values remaining for this header, skip the comma */
466 sov++;
467 while (sov < eol && http_is_lws[(unsigned char)*sov])
468 sov++;
469
470 goto return_hdr;
471 }
472
473 /* first request for this header */
474 sol += hdr_idx_first_pos(idx);
475 cur_idx = hdr_idx_first_idx(idx);
476
477 while (cur_idx) {
478 eol = sol + idx->v[cur_idx].len;
479
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]480 if (len == 0) {
481 /* No argument was passed, we want any header.
482 * To achieve this, we simply build a fake request. */
483 while (sol + len < eol && sol[len] != ':')
484 len++;
485 name = sol;
486 }
487
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]488 if ((len < eol - sol) &&
489 (sol[len] == ':') &&
490 (strncasecmp(sol, name, len) == 0)) {
491
492 sov = sol + len + 1;
493 while (sov < eol && http_is_lws[(unsigned char)*sov])
494 sov++;
495 return_hdr:
496 ctx->line = sol;
497 ctx->idx = cur_idx;
498 ctx->val = sov - sol;
499
500 eol = find_hdr_value_end(sov, eol);
501 ctx->vlen = eol - sov;
502 return 1;
503 }
504 next_hdr:
505 sol = eol + idx->v[cur_idx].cr + 1;
506 cur_idx = idx->v[cur_idx].next;
507 }
508 return 0;
509}
510
511int http_find_header(const char *name,
512 const char *sol, struct hdr_idx *idx,
513 struct hdr_ctx *ctx)
514{
515 return http_find_header2(name, strlen(name), sol, idx, ctx);
516}
517
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]518/* This function handles a server error at the stream interface level. The
519 * stream interface is assumed to be already in a closed state. An optional
520 * message is copied into the input buffer, and an HTTP status code stored.
521 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]522 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]523 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]524static void http_server_error(struct session *t, struct stream_interface *si,
525 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]526{
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]527 buffer_erase(si->ob);
528 buffer_erase(si->ib);
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]529 buffer_auto_close(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]530 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]531 t->txn.status = status;
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]532 buffer_write(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]533 }
534 if (!(t->flags & SN_ERR_MASK))
535 t->flags |= err;
536 if (!(t->flags & SN_FINST_MASK))
537 t->flags |= finst;
538}
539
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]540/* This function returns the appropriate error location for the given session
541 * and message.
542 */
543
544struct chunk *error_message(struct session *s, int msgnum)
545{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]546 if (s->be->errmsg[msgnum].str)
547 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]548 else if (s->fe->errmsg[msgnum].str)
549 return &s->fe->errmsg[msgnum];
550 else
551 return &http_err_chunks[msgnum];
552}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]553
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]554/*
555 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
556 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
557 */
558static http_meth_t find_http_meth(const char *str, const int len)
559{
560 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]561 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]562
563 m = ((unsigned)*str - 'A');
564
565 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]566 for (h = http_methods[m]; h->len > 0; h++) {
567 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]568 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]569 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]570 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]571 };
572 return HTTP_METH_OTHER;
573 }
574 return HTTP_METH_NONE;
575
576}
577
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]578/* Parse the URI from the given transaction (which is assumed to be in request
579 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
580 * It is returned otherwise.
581 */
582static char *
583http_get_path(struct http_txn *txn)
584{
585 char *ptr, *end;
586
587 ptr = txn->req.sol + txn->req.sl.rq.u;
588 end = ptr + txn->req.sl.rq.u_l;
589
590 if (ptr >= end)
591 return NULL;
592
593 /* RFC2616, par. 5.1.2 :
594 * Request-URI = "*" | absuri | abspath | authority
595 */
596
597 if (*ptr == '*')
598 return NULL;
599
600 if (isalpha((unsigned char)*ptr)) {
601 /* this is a scheme as described by RFC3986, par. 3.1 */
602 ptr++;
603 while (ptr < end &&
604 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
605 ptr++;
606 /* skip '://' */
607 if (ptr == end || *ptr++ != ':')
608 return NULL;
609 if (ptr == end || *ptr++ != '/')
610 return NULL;
611 if (ptr == end || *ptr++ != '/')
612 return NULL;
613 }
614 /* skip [user[:passwd]@]host[:[port]] */
615
616 while (ptr < end && *ptr != '/')
617 ptr++;
618
619 if (ptr == end)
620 return NULL;
621
622 /* OK, we got the '/' ! */
623 return ptr;
624}
625
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]626/* Returns a 302 for a redirectable request. This may only be called just after
627 * the stream interface has moved to SI_ST_ASS. Unprocessable requests are
628 * left unchanged and will follow normal proxy processing.
629 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]630void perform_http_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]631{
632 struct http_txn *txn;
633 struct chunk rdr;
634 char *path;
635 int len;
636
637 /* 1: create the response header */
638 rdr.len = strlen(HTTP_302);
639 rdr.str = trash;
640 memcpy(rdr.str, HTTP_302, rdr.len);
641
642 /* 2: add the server's prefix */
643 if (rdr.len + s->srv->rdr_len > sizeof(trash))
644 return;
645
646 memcpy(rdr.str + rdr.len, s->srv->rdr_pfx, s->srv->rdr_len);
647 rdr.len += s->srv->rdr_len;
648
649 /* 3: add the request URI */
650 txn = &s->txn;
651 path = http_get_path(txn);
652 if (!path)
653 return;
654
655 len = txn->req.sl.rq.u_l + (txn->req.sol+txn->req.sl.rq.u) - path;
656 if (rdr.len + len > sizeof(trash) - 4) /* 4 for CRLF-CRLF */
657 return;
658
659 memcpy(rdr.str + rdr.len, path, len);
660 rdr.len += len;
661 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
662 rdr.len += 4;
663
664 /* prepare to return without error. */
Willy Tarreau99126c32008-11-27 10:30:51 +0100[diff] [blame]665 si->shutr(si);
666 si->shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]667 si->err_type = SI_ET_NONE;
668 si->err_loc = NULL;
669 si->state = SI_ST_CLO;
670
671 /* send the message */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]672 http_server_error(s, si, SN_ERR_PRXCOND, SN_FINST_C, 302, &rdr);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]673
674 /* FIXME: we should increase a counter of redirects per server and per backend. */
675 if (s->srv)
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]676 srv_inc_sess_ctr(s->srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]677}
678
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]679/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]680 * that the server side is closed. Note that err_type is actually a
681 * bitmask, where almost only aborts may be cumulated with other
682 * values. We consider that aborted operations are more important
683 * than timeouts or errors due to the fact that nobody else in the
684 * logs might explain incomplete retries. All others should avoid
685 * being cumulated. It should normally not be possible to have multiple
686 * aborts at once, but just in case, the first one in sequence is reported.
687 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]688void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]689{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]690 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]691
692 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]693 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
694 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]695 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]696 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
697 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]698 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]699 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
700 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]701 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]702 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
703 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]704 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]705 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
706 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]707 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]708 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
709 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]710 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]711 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
712 500, error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]713}
714
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]715extern const char sess_term_cond[8];
716extern const char sess_fin_state[8];
717extern const char *monthname[12];
718const char sess_cookie[4] = "NIDV"; /* No cookie, Invalid cookie, cookie for a Down server, Valid cookie */
719const char sess_set_cookie[8] = "N1I3PD5R"; /* No set-cookie, unknown, Set-Cookie Inserted, unknown,
720 Set-cookie seen and left unchanged (passive), Set-cookie Deleted,
721 unknown, Set-cookie Rewritten */
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]722struct pool_head *pool2_requri;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]723struct pool_head *pool2_capture;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]724
Emeric Brun3a058f32009-06-30 18:26:00 +0200[diff] [blame]725void http_sess_clflog(struct session *s)
726{
727 char pn[INET6_ADDRSTRLEN + strlen(":65535")];
728 struct proxy *fe = s->fe;
729 struct proxy *be = s->be;
730 struct proxy *prx_log;
731 struct http_txn *txn = &s->txn;
732 int tolog, level, err;
733 char *uri, *h;
734 char *svid;
735 struct tm tm;
736 static char tmpline[MAX_SYSLOG_LEN];
737 int hdr;
738 size_t w;
739 int t_request;
740
741 prx_log = fe;
742 err = (s->flags & (SN_ERR_MASK | SN_REDISP)) ||
743 (s->conn_retries != be->conn_retries) ||
744 txn->status >= 500;
745
746 if (s->cli_addr.ss_family == AF_INET)
747 inet_ntop(AF_INET,
748 (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
749 pn, sizeof(pn));
750 else
751 inet_ntop(AF_INET6,
752 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
753 pn, sizeof(pn));
754
755 get_gmtime(s->logs.accept_date.tv_sec, &tm);
756
757 /* FIXME: let's limit ourselves to frontend logging for now. */
758 tolog = fe->to_log;
759
760 h = tmpline;
761
762 w = snprintf(h, sizeof(tmpline),
763 "%s - - [%02d/%s/%04d:%02d:%02d:%02d +0000]",
764 pn,
765 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
766 tm.tm_hour, tm.tm_min, tm.tm_sec);
767 if (w < 0 || w >= sizeof(tmpline) - (h - tmpline))
768 goto trunc;
769 h += w;
770
771 if (h >= tmpline + sizeof(tmpline) - 4)
772 goto trunc;
773
774 *(h++) = ' ';
775 *(h++) = '\"';
776 uri = txn->uri ? txn->uri : "<BADREQ>";
777 h = encode_string(h, tmpline + sizeof(tmpline) - 1,
778 '#', url_encode_map, uri);
779 *(h++) = '\"';
780
781 w = snprintf(h, sizeof(tmpline) - (h - tmpline), " %d %lld", txn->status, s->logs.bytes_out);
782 if (w < 0 || w >= sizeof(tmpline) - (h - tmpline))
783 goto trunc;
784 h += w;
785
786 if (h >= tmpline + sizeof(tmpline) - 9)
787 goto trunc;
788 memcpy(h, " \"-\" \"-\"", 8);
789 h += 8;
790
791 w = snprintf(h, sizeof(tmpline) - (h - tmpline),
792 " %d %03d",
793 (s->cli_addr.ss_family == AF_INET) ?
794 ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port) :
795 ntohs(((struct sockaddr_in6 *)&s->cli_addr)->sin6_port),
796 (int)s->logs.accept_date.tv_usec/1000);
797 if (w < 0 || w >= sizeof(tmpline) - (h - tmpline))
798 goto trunc;
799 h += w;
800
801 w = strlen(fe->id);
802 if (h >= tmpline + sizeof(tmpline) - 4 - w)
803 goto trunc;
804 *(h++) = ' ';
805 *(h++) = '\"';
806 memcpy(h, fe->id, w);
807 h += w;
808 *(h++) = '\"';
809
810 w = strlen(be->id);
811 if (h >= tmpline + sizeof(tmpline) - 4 - w)
812 goto trunc;
813 *(h++) = ' ';
814 *(h++) = '\"';
815 memcpy(h, be->id, w);
816 h += w;
817 *(h++) = '\"';
818
819 svid = (tolog & LW_SVID) ?
820 (s->data_source != DATA_SRC_STATS) ?
821 (s->srv != NULL) ? s->srv->id : "<NOSRV>" : "<STATS>" : "-";
822
823 w = strlen(svid);
824 if (h >= tmpline + sizeof(tmpline) - 4 - w)
825 goto trunc;
826 *(h++) = ' ';
827 *(h++) = '\"';
828 memcpy(h, svid, w);
829 h += w;
830 *(h++) = '\"';
831
832 t_request = -1;
833 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
834 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
835 w = snprintf(h, sizeof(tmpline) - (h - tmpline),
836 " %d %ld %ld %ld %ld",
837 t_request,
838 (s->logs.t_queue >= 0) ? s->logs.t_queue - t_request : -1,
839 (s->logs.t_connect >= 0) ? s->logs.t_connect - s->logs.t_queue : -1,
840 (s->logs.t_data >= 0) ? s->logs.t_data - s->logs.t_connect : -1,
841 s->logs.t_close);
842 if (w < 0 || w >= sizeof(tmpline) - (h - tmpline))
843 goto trunc;
844 h += w;
845
846 if (h >= tmpline + sizeof(tmpline) - 8)
847 goto trunc;
848 *(h++) = ' ';
849 *(h++) = '\"';
850 *(h++) = sess_term_cond[(s->flags & SN_ERR_MASK) >> SN_ERR_SHIFT];
851 *(h++) = sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_FINST_SHIFT];
852 *(h++) = (be->options & PR_O_COOK_ANY) ? sess_cookie[(txn->flags & TX_CK_MASK) >> TX_CK_SHIFT] : '-',
853 *(h++) = (be->options & PR_O_COOK_ANY) ? sess_set_cookie[(txn->flags & TX_SCK_MASK) >> TX_SCK_SHIFT] : '-';
854 *(h++) = '\"';
855
856 w = snprintf(h, sizeof(tmpline) - (h - tmpline),
857 " %d %d %d %d %d %ld %ld",
858 actconn, fe->feconn, be->beconn, s->srv ? s->srv->cur_sess : 0,
859 (s->conn_retries > 0) ? (be->conn_retries - s->conn_retries) : be->conn_retries,
860 s->logs.srv_queue_size, s->logs.prx_queue_size);
861
862 if (w < 0 || w >= sizeof(tmpline) - (h - tmpline))
863 goto trunc;
864 h += w;
865
866 if (txn->cli_cookie) {
867 w = strlen(txn->cli_cookie);
868 if (h >= tmpline + sizeof(tmpline) - 4 - w)
869 goto trunc;
870 *(h++) = ' ';
871 *(h++) = '\"';
872 memcpy(h, txn->cli_cookie, w);
873 h += w;
874 *(h++) = '\"';
875 } else {
876 if (h >= tmpline + sizeof(tmpline) - 5)
877 goto trunc;
878 memcpy(h, " \"-\"", 4);
879 h += 4;
880 }
881
882 if (txn->srv_cookie) {
883 w = strlen(txn->srv_cookie);
884 if (h >= tmpline + sizeof(tmpline) - 4 - w)
885 goto trunc;
886 *(h++) = ' ';
887 *(h++) = '\"';
888 memcpy(h, txn->srv_cookie, w);
889 h += w;
890 *(h++) = '\"';
891 } else {
892 if (h >= tmpline + sizeof(tmpline) - 5)
893 goto trunc;
894 memcpy(h, " \"-\"", 4);
895 h += 4;
896 }
897
898 if ((fe->to_log & LW_REQHDR) && txn->req.cap) {
899 for (hdr = 0; hdr < fe->nb_req_cap; hdr++) {
900 if (h >= sizeof (tmpline) + tmpline - 4)
901 goto trunc;
902 *(h++) = ' ';
903 *(h++) = '\"';
904 h = encode_string(h, tmpline + sizeof(tmpline) - 2,
905 '#', hdr_encode_map, txn->req.cap[hdr]);
906 *(h++) = '\"';
907 }
908 }
909
910 if ((fe->to_log & LW_RSPHDR) && txn->rsp.cap) {
911 for (hdr = 0; hdr < fe->nb_rsp_cap; hdr++) {
912 if (h >= sizeof (tmpline) + tmpline - 4)
913 goto trunc;
914 *(h++) = ' ';
915 *(h++) = '\"';
916 h = encode_string(h, tmpline + sizeof(tmpline) - 2,
917 '#', hdr_encode_map, txn->rsp.cap[hdr]);
918 *(h++) = '\"';
919 }
920 }
921
922trunc:
923 *h = '\0';
924
925 level = LOG_INFO;
926 if (err && (fe->options2 & PR_O2_LOGERRORS))
927 level = LOG_ERR;
928
929 send_log(prx_log, level, "%s\n", tmpline);
930
931 s->logs.logwait = 0;
932}
933
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]934/*
935 * send a log for the session when we have enough info about it.
936 * Will not log if the frontend has no log defined.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]937 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]938void http_sess_log(struct session *s)
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]939{
940 char pn[INET6_ADDRSTRLEN + strlen(":65535")];
941 struct proxy *fe = s->fe;
942 struct proxy *be = s->be;
943 struct proxy *prx_log;
944 struct http_txn *txn = &s->txn;
Willy Tarreauc9bd0cc2009-05-10 11:57:02 +0200[diff] [blame]945 int tolog, level, err;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]946 char *uri, *h;
947 char *svid;
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]948 struct tm tm;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]949 static char tmpline[MAX_SYSLOG_LEN];
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]950 int t_request;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]951 int hdr;
952
Willy Tarreauc9bd0cc2009-05-10 11:57:02 +0200[diff] [blame]953 /* if we don't want to log normal traffic, return now */
954 err = (s->flags & (SN_ERR_MASK | SN_REDISP)) ||
955 (s->conn_retries != be->conn_retries) ||
956 txn->status >= 500;
957 if (!err && (fe->options2 & PR_O2_NOLOGNORM))
958 return;
959
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]960 if (fe->logfac1 < 0 && fe->logfac2 < 0)
961 return;
962 prx_log = fe;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]963
Emeric Brun3a058f32009-06-30 18:26:00 +0200[diff] [blame]964 if (prx_log->options2 & PR_O2_CLFLOG)
965 return http_sess_clflog(s);
966
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]967 if (s->cli_addr.ss_family == AF_INET)
968 inet_ntop(AF_INET,
969 (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
970 pn, sizeof(pn));
971 else
972 inet_ntop(AF_INET6,
973 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
974 pn, sizeof(pn));
975
Willy Tarreaub7f694f2008-06-22 17:18:02 +0200[diff] [blame]976 get_localtime(s->logs.accept_date.tv_sec, &tm);
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]977
978 /* FIXME: let's limit ourselves to frontend logging for now. */
979 tolog = fe->to_log;
980
981 h = tmpline;
982 if (fe->to_log & LW_REQHDR &&
983 txn->req.cap &&
984 (h < tmpline + sizeof(tmpline) - 10)) {
985 *(h++) = ' ';
986 *(h++) = '{';
987 for (hdr = 0; hdr < fe->nb_req_cap; hdr++) {
988 if (hdr)
989 *(h++) = '|';
990 if (txn->req.cap[hdr] != NULL)
991 h = encode_string(h, tmpline + sizeof(tmpline) - 7,
992 '#', hdr_encode_map, txn->req.cap[hdr]);
993 }
994 *(h++) = '}';
995 }
996
997 if (fe->to_log & LW_RSPHDR &&
998 txn->rsp.cap &&
999 (h < tmpline + sizeof(tmpline) - 7)) {
1000 *(h++) = ' ';
1001 *(h++) = '{';
1002 for (hdr = 0; hdr < fe->nb_rsp_cap; hdr++) {
1003 if (hdr)
1004 *(h++) = '|';
1005 if (txn->rsp.cap[hdr] != NULL)
1006 h = encode_string(h, tmpline + sizeof(tmpline) - 4,
1007 '#', hdr_encode_map, txn->rsp.cap[hdr]);
1008 }
1009 *(h++) = '}';
1010 }
1011
1012 if (h < tmpline + sizeof(tmpline) - 4) {
1013 *(h++) = ' ';
1014 *(h++) = '"';
1015 uri = txn->uri ? txn->uri : "<BADREQ>";
1016 h = encode_string(h, tmpline + sizeof(tmpline) - 1,
1017 '#', url_encode_map, uri);
1018 *(h++) = '"';
1019 }
1020 *h = '\0';
1021
1022 svid = (tolog & LW_SVID) ?
1023 (s->data_source != DATA_SRC_STATS) ?
1024 (s->srv != NULL) ? s->srv->id : "<NOSRV>" : "<STATS>" : "-";
1025
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]1026 t_request = -1;
1027 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
1028 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
1029
Willy Tarreauc9bd0cc2009-05-10 11:57:02 +0200[diff] [blame]1030 level = LOG_INFO;
1031 if (err && (fe->options2 & PR_O2_LOGERRORS))
1032 level = LOG_ERR;
1033
1034 send_log(prx_log, level,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1035 "%s:%d [%02d/%s/%04d:%02d:%02d:%02d.%03d]"
Willy Tarreau1772ece2009-04-03 14:49:12 +0200[diff] [blame]1036 " %s %s/%s %d/%ld/%ld/%ld/%s%ld %d %s%lld"
1037 " %s %s %c%c%c%c %d/%d/%d/%d/%s%u %ld/%ld%s\n",
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1038 pn,
1039 (s->cli_addr.ss_family == AF_INET) ?
1040 ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port) :
1041 ntohs(((struct sockaddr_in6 *)&s->cli_addr)->sin6_port),
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]1042 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
Willy Tarreau1772ece2009-04-03 14:49:12 +0200[diff] [blame]1043 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)s->logs.accept_date.tv_usec/1000,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1044 fe->id, be->id, svid,
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]1045 t_request,
1046 (s->logs.t_queue >= 0) ? s->logs.t_queue - t_request : -1,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1047 (s->logs.t_connect >= 0) ? s->logs.t_connect - s->logs.t_queue : -1,
1048 (s->logs.t_data >= 0) ? s->logs.t_data - s->logs.t_connect : -1,
1049 (tolog & LW_BYTES) ? "" : "+", s->logs.t_close,
1050 txn->status,
Willy Tarreau8b3977f2008-01-18 11:16:32 +0100[diff] [blame]1051 (tolog & LW_BYTES) ? "" : "+", s->logs.bytes_out,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1052 txn->cli_cookie ? txn->cli_cookie : "-",
1053 txn->srv_cookie ? txn->srv_cookie : "-",
1054 sess_term_cond[(s->flags & SN_ERR_MASK) >> SN_ERR_SHIFT],
1055 sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_FINST_SHIFT],
1056 (be->options & PR_O_COOK_ANY) ? sess_cookie[(txn->flags & TX_CK_MASK) >> TX_CK_SHIFT] : '-',
1057 (be->options & PR_O_COOK_ANY) ? sess_set_cookie[(txn->flags & TX_SCK_MASK) >> TX_SCK_SHIFT] : '-',
1058 actconn, fe->feconn, be->beconn, s->srv ? s->srv->cur_sess : 0,
Krzysztof Piotr Oledzki25b501a2008-01-06 16:36:16 +0100[diff] [blame]1059 (s->flags & SN_REDISP)?"+":"",
1060 (s->conn_retries>0)?(be->conn_retries - s->conn_retries):be->conn_retries,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1061 s->logs.srv_queue_size, s->logs.prx_queue_size, tmpline);
1062
1063 s->logs.logwait = 0;
1064}
1065
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1066
1067/*
1068 * Capture headers from message starting at <som> according to header list
1069 * <cap_hdr>, and fill the <idx> structure appropriately.
1070 */
1071void capture_headers(char *som, struct hdr_idx *idx,
1072 char **cap, struct cap_hdr *cap_hdr)
1073{
1074 char *eol, *sol, *col, *sov;
1075 int cur_idx;
1076 struct cap_hdr *h;
1077 int len;
1078
1079 sol = som + hdr_idx_first_pos(idx);
1080 cur_idx = hdr_idx_first_idx(idx);
1081
1082 while (cur_idx) {
1083 eol = sol + idx->v[cur_idx].len;
1084
1085 col = sol;
1086 while (col < eol && *col != ':')
1087 col++;
1088
1089 sov = col + 1;
1090 while (sov < eol && http_is_lws[(unsigned char)*sov])
1091 sov++;
1092
1093 for (h = cap_hdr; h; h = h->next) {
1094 if ((h->namelen == col - sol) &&
1095 (strncasecmp(sol, h->name, h->namelen) == 0)) {
1096 if (cap[h->index] == NULL)
1097 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]1098 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1099
1100 if (cap[h->index] == NULL) {
1101 Alert("HTTP capture : out of memory.\n");
1102 continue;
1103 }
1104
1105 len = eol - sov;
1106 if (len > h->len)
1107 len = h->len;
1108
1109 memcpy(cap[h->index], sov, len);
1110 cap[h->index][len]=0;
1111 }
1112 }
1113 sol = eol + idx->v[cur_idx].cr + 1;
1114 cur_idx = idx->v[cur_idx].next;
1115 }
1116}
1117
1118
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1119/* either we find an LF at <ptr> or we jump to <bad>.
1120 */
1121#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
1122
1123/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1124 * otherwise to <http_msg_ood> with <state> set to <st>.
1125 */
1126#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1127 ptr++; \
1128 if (likely(ptr < end)) \
1129 goto good; \
1130 else { \
1131 state = (st); \
1132 goto http_msg_ood; \
1133 } \
1134 } while (0)
1135
1136
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1137/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1138 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1139 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1140 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1141 * will give undefined results.
1142 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1143 * and that msg->sol points to the beginning of the response.
1144 * If a complete line is found (which implies that at least one CR or LF is
1145 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1146 * returned indicating an incomplete line (which does not mean that parts have
1147 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1148 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1149 * upon next call.
1150 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1151 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1152 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1153 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1154 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1155 */
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1156const char *http_parse_stsline(struct http_msg *msg, const char *msg_buf,
1157 unsigned int state, const char *ptr, const char *end,
1158 char **ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1159{
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1160 switch (state) {
1161 http_msg_rpver:
1162 case HTTP_MSG_RPVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1163 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1164 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1165
1166 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1167 msg->sl.st.v_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1168 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1169 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1170 state = HTTP_MSG_ERROR;
1171 break;
1172
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1173 http_msg_rpver_sp:
1174 case HTTP_MSG_RPVER_SP:
1175 if (likely(!HTTP_IS_LWS(*ptr))) {
1176 msg->sl.st.c = ptr - msg_buf;
1177 goto http_msg_rpcode;
1178 }
1179 if (likely(HTTP_IS_SPHT(*ptr)))
1180 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1181 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1182 state = HTTP_MSG_ERROR;
1183 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1184
1185 http_msg_rpcode:
1186 case HTTP_MSG_RPCODE:
1187 if (likely(!HTTP_IS_LWS(*ptr)))
1188 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1189
1190 if (likely(HTTP_IS_SPHT(*ptr))) {
1191 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
1192 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1193 }
1194
1195 /* so it's a CR/LF, so there is no reason phrase */
1196 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
1197 http_msg_rsp_reason:
1198 /* FIXME: should we support HTTP responses without any reason phrase ? */
1199 msg->sl.st.r = ptr - msg_buf;
1200 msg->sl.st.r_l = 0;
1201 goto http_msg_rpline_eol;
1202
1203 http_msg_rpcode_sp:
1204 case HTTP_MSG_RPCODE_SP:
1205 if (likely(!HTTP_IS_LWS(*ptr))) {
1206 msg->sl.st.r = ptr - msg_buf;
1207 goto http_msg_rpreason;
1208 }
1209 if (likely(HTTP_IS_SPHT(*ptr)))
1210 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1211 /* so it's a CR/LF, so there is no reason phrase */
1212 goto http_msg_rsp_reason;
1213
1214 http_msg_rpreason:
1215 case HTTP_MSG_RPREASON:
1216 if (likely(!HTTP_IS_CRLF(*ptr)))
1217 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
1218 msg->sl.st.r_l = (ptr - msg_buf) - msg->sl.st.r;
1219 http_msg_rpline_eol:
1220 /* We have seen the end of line. Note that we do not
1221 * necessarily have the \n yet, but at least we know that we
1222 * have EITHER \r OR \n, otherwise the response would not be
1223 * complete. We can then record the response length and return
1224 * to the caller which will be able to register it.
1225 */
1226 msg->sl.st.l = ptr - msg->sol;
1227 return ptr;
1228
1229#ifdef DEBUG_FULL
1230 default:
1231 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1232 exit(1);
1233#endif
1234 }
1235
1236 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1237 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1238 if (ret_state)
1239 *ret_state = state;
1240 if (ret_ptr)
1241 *ret_ptr = (char *)ptr;
1242 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1243}
1244
1245
1246/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1247 * This function parses a request line between <ptr> and <end>, starting with
1248 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1249 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1250 * will give undefined results.
1251 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1252 * and that msg->sol points to the beginning of the request.
1253 * If a complete line is found (which implies that at least one CR or LF is
1254 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1255 * returned indicating an incomplete line (which does not mean that parts have
1256 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1257 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1258 * upon next call.
1259 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1260 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1261 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1262 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1263 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1264 */
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1265const char *http_parse_reqline(struct http_msg *msg, const char *msg_buf,
1266 unsigned int state, const char *ptr, const char *end,
1267 char **ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1268{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1269 switch (state) {
1270 http_msg_rqmeth:
1271 case HTTP_MSG_RQMETH:
1272 if (likely(HTTP_IS_TOKEN(*ptr)))
1273 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1274
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1275 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1276 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1277 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1278 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1279
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1280 if (likely(HTTP_IS_CRLF(*ptr))) {
1281 /* HTTP 0.9 request */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1282 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1283 http_msg_req09_uri:
1284 msg->sl.rq.u = ptr - msg_buf;
1285 http_msg_req09_uri_e:
1286 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1287 http_msg_req09_ver:
1288 msg->sl.rq.v = ptr - msg_buf;
1289 msg->sl.rq.v_l = 0;
1290 goto http_msg_rqline_eol;
1291 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1292 state = HTTP_MSG_ERROR;
1293 break;
1294
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1295 http_msg_rqmeth_sp:
1296 case HTTP_MSG_RQMETH_SP:
1297 if (likely(!HTTP_IS_LWS(*ptr))) {
1298 msg->sl.rq.u = ptr - msg_buf;
1299 goto http_msg_rquri;
1300 }
1301 if (likely(HTTP_IS_SPHT(*ptr)))
1302 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1303 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1304 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1305
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1306 http_msg_rquri:
1307 case HTTP_MSG_RQURI:
1308 if (likely(!HTTP_IS_LWS(*ptr)))
1309 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1310
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1311 if (likely(HTTP_IS_SPHT(*ptr))) {
1312 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1313 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1314 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1315
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1316 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1317 goto http_msg_req09_uri_e;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1318
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1319 http_msg_rquri_sp:
1320 case HTTP_MSG_RQURI_SP:
1321 if (likely(!HTTP_IS_LWS(*ptr))) {
1322 msg->sl.rq.v = ptr - msg_buf;
1323 goto http_msg_rqver;
1324 }
1325 if (likely(HTTP_IS_SPHT(*ptr)))
1326 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1327 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1328 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1329
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1330 http_msg_rqver:
1331 case HTTP_MSG_RQVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1332 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1333 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1334
1335 if (likely(HTTP_IS_CRLF(*ptr))) {
1336 msg->sl.rq.v_l = (ptr - msg_buf) - msg->sl.rq.v;
1337 http_msg_rqline_eol:
1338 /* We have seen the end of line. Note that we do not
1339 * necessarily have the \n yet, but at least we know that we
1340 * have EITHER \r OR \n, otherwise the request would not be
1341 * complete. We can then record the request length and return
1342 * to the caller which will be able to register it.
1343 */
1344 msg->sl.rq.l = ptr - msg->sol;
1345 return ptr;
1346 }
1347
1348 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1349 state = HTTP_MSG_ERROR;
1350 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1351
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1352#ifdef DEBUG_FULL
1353 default:
1354 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1355 exit(1);
1356#endif
1357 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1358
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1359 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1360 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1361 if (ret_state)
1362 *ret_state = state;
1363 if (ret_ptr)
1364 *ret_ptr = (char *)ptr;
1365 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1366}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1367
1368
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1369/*
1370 * This function parses an HTTP message, either a request or a response,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1371 * depending on the initial msg->msg_state. It can be preempted everywhere
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1372 * when data are missing and recalled at the exact same location with no
1373 * information loss. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1374 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
1375 * fields.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1376 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1377void http_msg_analyzer(struct buffer *buf, struct http_msg *msg, struct hdr_idx *idx)
1378{
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1379 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1380 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1381
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1382 state = msg->msg_state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1383 ptr = buf->lr;
1384 end = buf->r;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1385
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1386 if (unlikely(ptr >= end))
1387 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1388
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1389 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1390 /*
1391 * First, states that are specific to the response only.
1392 * We check them first so that request and headers are
1393 * closer to each other (accessed more often).
1394 */
1395 http_msg_rpbefore:
1396 case HTTP_MSG_RPBEFORE:
1397 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]1398#if !defined(PARSE_PRESERVE_EMPTY_LINES)
1399 if (likely(ptr != buf->data)) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1400 /* Remove empty leading lines, as recommended by
1401 * RFC2616. This takes a lot of time because we
1402 * must move all the buffer backwards, but this
1403 * is rarely needed. The method above will be
1404 * cleaner when we'll be able to start sending
1405 * the request from any place in the buffer.
1406 */
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]1407 ptr += buffer_replace2(buf, buf->lr, ptr, NULL, 0);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1408 end = buf->r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1409 }
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]1410#endif
1411 msg->sol = ptr;
1412 msg->som = ptr - buf->data;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1413 hdr_idx_init(idx);
1414 state = HTTP_MSG_RPVER;
1415 goto http_msg_rpver;
1416 }
1417
1418 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1419 goto http_msg_invalid;
1420
1421 if (unlikely(*ptr == '\n'))
1422 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1423 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1424 /* stop here */
1425
1426 http_msg_rpbefore_cr:
1427 case HTTP_MSG_RPBEFORE_CR:
1428 EXPECT_LF_HERE(ptr, http_msg_invalid);
1429 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1430 /* stop here */
1431
1432 http_msg_rpver:
1433 case HTTP_MSG_RPVER:
1434 case HTTP_MSG_RPVER_SP:
1435 case HTTP_MSG_RPCODE:
1436 case HTTP_MSG_RPCODE_SP:
1437 case HTTP_MSG_RPREASON:
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1438 ptr = (char *)http_parse_stsline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1439 &buf->lr, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1440 if (unlikely(!ptr))
1441 return;
1442
1443 /* we have a full response and we know that we have either a CR
1444 * or an LF at <ptr>.
1445 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1446 //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]1447 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1448
1449 msg->sol = ptr;
1450 if (likely(*ptr == '\r'))
1451 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1452 goto http_msg_rpline_end;
1453
1454 http_msg_rpline_end:
1455 case HTTP_MSG_RPLINE_END:
1456 /* msg->sol must point to the first of CR or LF. */
1457 EXPECT_LF_HERE(ptr, http_msg_invalid);
1458 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1459 /* stop here */
1460
1461 /*
1462 * Second, states that are specific to the request only
1463 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1464 http_msg_rqbefore:
1465 case HTTP_MSG_RQBEFORE:
1466 if (likely(HTTP_IS_TOKEN(*ptr))) {
1467 if (likely(ptr == buf->data)) {
1468 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1469 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1470 } else {
1471#if PARSE_PRESERVE_EMPTY_LINES
1472 /* only skip empty leading lines, don't remove them */
1473 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1474 msg->som = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1475#else
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1476 /* Remove empty leading lines, as recommended by
1477 * RFC2616. This takes a lot of time because we
1478 * must move all the buffer backwards, but this
1479 * is rarely needed. The method above will be
1480 * cleaner when we'll be able to start sending
1481 * the request from any place in the buffer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1482 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1483 buf->lr = ptr;
1484 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1485 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1486 msg->sol = buf->data;
1487 ptr = buf->data;
1488 end = buf->r;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1489#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1490 }
Willy Tarreauf0d058e2007-01-25 12:03:42 +0100[diff] [blame]1491 /* we will need this when keep-alive will be supported
1492 hdr_idx_init(idx);
1493 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1494 state = HTTP_MSG_RQMETH;
1495 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1496 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1497
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1498 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1499 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1500
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1501 if (unlikely(*ptr == '\n'))
1502 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1503 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1504 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1505
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1506 http_msg_rqbefore_cr:
1507 case HTTP_MSG_RQBEFORE_CR:
1508 EXPECT_LF_HERE(ptr, http_msg_invalid);
1509 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1510 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1511
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1512 http_msg_rqmeth:
1513 case HTTP_MSG_RQMETH:
1514 case HTTP_MSG_RQMETH_SP:
1515 case HTTP_MSG_RQURI:
1516 case HTTP_MSG_RQURI_SP:
1517 case HTTP_MSG_RQVER:
1518 ptr = (char *)http_parse_reqline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1519 &buf->lr, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1520 if (unlikely(!ptr))
1521 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1522
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1523 /* we have a full request and we know that we have either a CR
1524 * or an LF at <ptr>.
1525 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1526 //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]1527 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1528
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1529 msg->sol = ptr;
1530 if (likely(*ptr == '\r'))
1531 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1532 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1533
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1534 http_msg_rqline_end:
1535 case HTTP_MSG_RQLINE_END:
1536 /* check for HTTP/0.9 request : no version information available.
1537 * msg->sol must point to the first of CR or LF.
1538 */
1539 if (unlikely(msg->sl.rq.v_l == 0))
1540 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1541
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1542 EXPECT_LF_HERE(ptr, http_msg_invalid);
1543 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1544 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1545
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1546 /*
1547 * Common states below
1548 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1549 http_msg_hdr_first:
1550 case HTTP_MSG_HDR_FIRST:
1551 msg->sol = ptr;
1552 if (likely(!HTTP_IS_CRLF(*ptr))) {
1553 goto http_msg_hdr_name;
1554 }
1555
1556 if (likely(*ptr == '\r'))
1557 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1558 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1559
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1560 http_msg_hdr_name:
1561 case HTTP_MSG_HDR_NAME:
1562 /* assumes msg->sol points to the first char */
1563 if (likely(HTTP_IS_TOKEN(*ptr)))
1564 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1565
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1566 if (likely(*ptr == ':')) {
1567 msg->col = ptr - buf->data;
1568 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
1569 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1570
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1571 if (likely(msg->err_pos < -1) || *ptr == '\n')
1572 goto http_msg_invalid;
1573
1574 if (msg->err_pos == -1) /* capture error pointer */
1575 msg->err_pos = ptr - buf->data; /* >= 0 now */
1576
1577 /* and we still accept this non-token character */
1578 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1579
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1580 http_msg_hdr_l1_sp:
1581 case HTTP_MSG_HDR_L1_SP:
1582 /* assumes msg->sol points to the first char and msg->col to the colon */
1583 if (likely(HTTP_IS_SPHT(*ptr)))
1584 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]1585
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1586 /* header value can be basically anything except CR/LF */
1587 msg->sov = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1588
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1589 if (likely(!HTTP_IS_CRLF(*ptr))) {
1590 goto http_msg_hdr_val;
1591 }
1592
1593 if (likely(*ptr == '\r'))
1594 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1595 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1596
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1597 http_msg_hdr_l1_lf:
1598 case HTTP_MSG_HDR_L1_LF:
1599 EXPECT_LF_HERE(ptr, http_msg_invalid);
1600 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]1601
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1602 http_msg_hdr_l1_lws:
1603 case HTTP_MSG_HDR_L1_LWS:
1604 if (likely(HTTP_IS_SPHT(*ptr))) {
1605 /* replace HT,CR,LF with spaces */
1606 for (; buf->data+msg->sov < ptr; msg->sov++)
1607 buf->data[msg->sov] = ' ';
1608 goto http_msg_hdr_l1_sp;
1609 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1610 /* we had a header consisting only in spaces ! */
1611 msg->eol = buf->data + msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1612 goto http_msg_complete_header;
1613
1614 http_msg_hdr_val:
1615 case HTTP_MSG_HDR_VAL:
1616 /* assumes msg->sol points to the first char, msg->col to the
1617 * colon, and msg->sov points to the first character of the
1618 * value.
1619 */
1620 if (likely(!HTTP_IS_CRLF(*ptr)))
1621 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1622
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1623 msg->eol = ptr;
1624 /* Note: we could also copy eol into ->eoh so that we have the
1625 * real header end in case it ends with lots of LWS, but is this
1626 * really needed ?
1627 */
1628 if (likely(*ptr == '\r'))
1629 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1630 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1631
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1632 http_msg_hdr_l2_lf:
1633 case HTTP_MSG_HDR_L2_LF:
1634 EXPECT_LF_HERE(ptr, http_msg_invalid);
1635 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]1636
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1637 http_msg_hdr_l2_lws:
1638 case HTTP_MSG_HDR_L2_LWS:
1639 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1640 /* LWS: replace HT,CR,LF with spaces */
1641 for (; msg->eol < ptr; msg->eol++)
1642 *msg->eol = ' ';
1643 goto http_msg_hdr_val;
1644 }
1645 http_msg_complete_header:
1646 /*
1647 * It was a new header, so the last one is finished.
1648 * Assumes msg->sol points to the first char, msg->col to the
1649 * colon, msg->sov points to the first character of the value
1650 * and msg->eol to the first CR or LF so we know how the line
1651 * ends. We insert last header into the index.
1652 */
1653 /*
1654 fprintf(stderr,"registering %-2d bytes : ", msg->eol - msg->sol);
1655 write(2, msg->sol, msg->eol-msg->sol);
1656 fprintf(stderr,"\n");
1657 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1658
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1659 if (unlikely(hdr_idx_add(msg->eol - msg->sol, *msg->eol == '\r',
1660 idx, idx->tail) < 0))
1661 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1662
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1663 msg->sol = ptr;
1664 if (likely(!HTTP_IS_CRLF(*ptr))) {
1665 goto http_msg_hdr_name;
1666 }
1667
1668 if (likely(*ptr == '\r'))
1669 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1670 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1671
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1672 http_msg_last_lf:
1673 case HTTP_MSG_LAST_LF:
1674 /* Assumes msg->sol points to the first of either CR or LF */
1675 EXPECT_LF_HERE(ptr, http_msg_invalid);
1676 ptr++;
1677 buf->lr = ptr;
1678 msg->eoh = msg->sol - buf->data;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1679 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1680 return;
1681#ifdef DEBUG_FULL
1682 default:
1683 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1684 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1685#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1686 }
1687 http_msg_ood:
1688 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1689 msg->msg_state = state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1690 buf->lr = ptr;
1691 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1692
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1693 http_msg_invalid:
1694 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1695 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1696 buf->lr = ptr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1697 return;
1698}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1699
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1700/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1701 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1702 * nothing is done and 1 is returned.
1703 */
1704static int http_upgrade_v09_to_v10(struct buffer *req, struct http_msg *msg, struct http_txn *txn)
1705{
1706 int delta;
1707 char *cur_end;
1708
1709 if (msg->sl.rq.v_l != 0)
1710 return 1;
1711
1712 msg->sol = req->data + msg->som;
1713 cur_end = msg->sol + msg->sl.rq.l;
1714 delta = 0;
1715
1716 if (msg->sl.rq.u_l == 0) {
1717 /* if no URI was set, add "/" */
1718 delta = buffer_replace2(req, cur_end, cur_end, " /", 2);
1719 cur_end += delta;
1720 msg->eoh += delta;
1721 }
1722 /* add HTTP version */
1723 delta = buffer_replace2(req, cur_end, cur_end, " HTTP/1.0\r\n", 11);
1724 msg->eoh += delta;
1725 cur_end += delta;
1726 cur_end = (char *)http_parse_reqline(msg, req->data,
1727 HTTP_MSG_RQMETH,
1728 msg->sol, cur_end + 1,
1729 NULL, NULL);
1730 if (unlikely(!cur_end))
1731 return 0;
1732
1733 /* we have a full HTTP/1.0 request now and we know that
1734 * we have either a CR or an LF at <ptr>.
1735 */
1736 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1737 return 1;
1738}
1739
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1740/* This stream analyser waits for a complete HTTP request. It returns 1 if the
1741 * processing can continue on next analysers, or zero if it either needs more
1742 * data or wants to immediately abort the request (eg: timeout, error, ...). It
1743 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
1744 * when it has nothing left to do, and may remove any analyser when it wants to
1745 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1746 */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]1747int http_wait_for_request(struct session *s, struct buffer *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1748{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1749 /*
1750 * We will parse the partial (or complete) lines.
1751 * We will check the request syntax, and also join multi-line
1752 * headers. An index of all the lines will be elaborated while
1753 * parsing.
1754 *
1755 * For the parsing, we use a 28 states FSM.
1756 *
1757 * Here is the information we currently have :
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]1758 * req->data + msg->som = beginning of request
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1759 * req->data + req->eoh = end of processed headers / start of current one
1760 * req->data + req->eol = end of current header or line (LF or CRLF)
1761 * req->lr = first non-visited byte
1762 * req->r = end of data
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1763 *
1764 * At end of parsing, we may perform a capture of the error (if any), and
1765 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
1766 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
1767 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1768 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1769
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1770 int cur_idx;
1771 struct http_txn *txn = &s->txn;
1772 struct http_msg *msg = &txn->req;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1773
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]1774 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
1775 now_ms, __FUNCTION__,
1776 s,
1777 req,
1778 req->rex, req->wex,
1779 req->flags,
1780 req->l,
1781 req->analysers);
1782
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]1783 /* we're speaking HTTP here, so let's speak HTTP to the client */
1784 s->srv_error = http_return_srv_error;
1785
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1786 if (likely(req->lr < req->r))
1787 http_msg_analyzer(req, msg, &txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1788
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1789 /* 1: we might have to print this header in debug mode */
1790 if (unlikely((global.mode & MODE_DEBUG) &&
1791 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
1792 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
1793 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1794
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1795 sol = req->data + msg->som;
1796 eol = sol + msg->sl.rq.l;
1797 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1798
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1799 sol += hdr_idx_first_pos(&txn->hdr_idx);
1800 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1801
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1802 while (cur_idx) {
1803 eol = sol + txn->hdr_idx.v[cur_idx].len;
1804 debug_hdr("clihdr", s, sol, eol);
1805 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
1806 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1807 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1808 }
1809
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1810
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1811 /*
1812 * Now we quickly check if we have found a full valid request.
1813 * If not so, we check the FD and buffer states before leaving.
1814 * A full request is indicated by the fact that we have seen
1815 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
1816 * requests are checked first.
1817 *
1818 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1819
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1820 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1821 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1822 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1823 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1824 if (unlikely(msg->msg_state == HTTP_MSG_ERROR))
1825 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1826
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1827 /* 1: Since we are in header mode, if there's no space
1828 * left for headers, we won't be able to free more
1829 * later, so the session will never terminate. We
1830 * must terminate it now.
1831 */
1832 if (unlikely(req->flags & BF_FULL)) {
1833 /* FIXME: check if URI is set and return Status
1834 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1835 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1836 goto return_bad_req;
1837 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1838
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1839 /* 2: have we encountered a read error ? */
1840 else if (req->flags & BF_READ_ERROR) {
1841 /* we cannot return any message on error */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]1842 if (msg->err_pos >= 0)
1843 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1844 msg->msg_state = HTTP_MSG_ERROR;
1845 req->analysers = 0;
1846 s->fe->failed_req++;
1847 if (!(s->flags & SN_ERR_MASK))
1848 s->flags |= SN_ERR_CLICL;
1849 if (!(s->flags & SN_FINST_MASK))
1850 s->flags |= SN_FINST_R;
1851 return 0;
1852 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]1853
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1854 /* 3: has the read timeout expired ? */
1855 else if (req->flags & BF_READ_TIMEOUT || tick_is_expired(req->analyse_exp, now_ms)) {
1856 /* read timeout : give up with an error message. */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]1857 if (msg->err_pos >= 0)
1858 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1859 txn->status = 408;
1860 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_408));
1861 msg->msg_state = HTTP_MSG_ERROR;
1862 req->analysers = 0;
1863 s->fe->failed_req++;
1864 if (!(s->flags & SN_ERR_MASK))
1865 s->flags |= SN_ERR_CLITO;
1866 if (!(s->flags & SN_FINST_MASK))
1867 s->flags |= SN_FINST_R;
1868 return 0;
1869 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1870
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1871 /* 4: have we encountered a close ? */
1872 else if (req->flags & BF_SHUTR) {
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]1873 if (msg->err_pos >= 0)
1874 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1875 txn->status = 400;
1876 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
1877 msg->msg_state = HTTP_MSG_ERROR;
1878 req->analysers = 0;
1879 s->fe->failed_req++;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1880
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1881 if (!(s->flags & SN_ERR_MASK))
1882 s->flags |= SN_ERR_CLICL;
1883 if (!(s->flags & SN_FINST_MASK))
1884 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]1885 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1886 }
1887
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]1888 buffer_dont_connect(req);
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]1889 req->flags |= BF_READ_DONTWAIT; /* try to get back here ASAP */
1890
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1891 /* just set the request timeout once at the beginning of the request */
1892 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]1893 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1894
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1895 /* we're not ready yet */
1896 return 0;
1897 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1898
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1899 /* OK now we have a complete HTTP request with indexed headers. Let's
1900 * complete the request parsing by setting a few fields we will need
1901 * later.
1902 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1903
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1904 /* Maybe we found in invalid header name while we were configured not
1905 * to block on that, so we have to capture it now.
1906 */
1907 if (unlikely(msg->err_pos >= 0))
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]1908 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
1909
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1910 /* ensure we keep this pointer to the beginning of the message */
1911 msg->sol = req->data + msg->som;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1912
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1913 /*
1914 * 1: identify the method
1915 */
1916 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
1917
1918 /* we can make use of server redirect on GET and HEAD */
1919 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
1920 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]1921
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1922 /*
1923 * 2: check if the URI matches the monitor_uri.
1924 * We have to do this for every request which gets in, because
1925 * the monitor-uri is defined by the frontend.
1926 */
1927 if (unlikely((s->fe->monitor_uri_len != 0) &&
1928 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
1929 !memcmp(&req->data[msg->sl.rq.u],
1930 s->fe->monitor_uri,
1931 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1932 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1933 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1934 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1935 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1936
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1937 s->flags |= SN_MONITOR;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1938
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1939 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1940 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
1941 int ret = acl_exec_cond(cond, s->fe, s, txn, ACL_DIR_REQ);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1942
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1943 ret = acl_pass(ret);
1944 if (cond->pol == ACL_COND_UNLESS)
1945 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1946
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1947 if (ret) {
1948 /* we fail this request, let's return 503 service unavail */
1949 txn->status = 503;
1950 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_503));
1951 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1952 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1953 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]1954
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1955 /* nothing to fail, let's reply normaly */
1956 txn->status = 200;
1957 stream_int_retnclose(req->prod, &http_200_chunk);
1958 goto return_prx_cond;
1959 }
1960
1961 /*
1962 * 3: Maybe we have to copy the original REQURI for the logs ?
1963 * Note: we cannot log anymore if the request has been
1964 * classified as invalid.
1965 */
1966 if (unlikely(s->logs.logwait & LW_REQ)) {
1967 /* we have a complete HTTP request that we must log */
1968 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
1969 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1970
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1971 if (urilen >= REQURI_LEN)
1972 urilen = REQURI_LEN - 1;
1973 memcpy(txn->uri, &req->data[msg->som], urilen);
1974 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1975
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1976 if (!(s->logs.logwait &= ~LW_REQ))
1977 s->do_log(s);
1978 } else {
1979 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1980 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1981 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1982
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1983 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1984 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(req, msg, txn))
1985 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1986
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1987 /* 5: we may need to capture headers */
1988 if (unlikely((s->logs.logwait & LW_REQHDR) && s->fe->req_cap))
1989 capture_headers(req->data + msg->som, &txn->hdr_idx,
1990 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1991
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1992 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]1993 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1994 req->analyse_exp = TICK_ETERNITY;
1995 return 1;
1996
1997 return_bad_req:
1998 /* We centralize bad requests processing here */
1999 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2000 /* we detected a parsing error. We want to archive this request
2001 * in the dedicated proxy area for later troubleshooting.
2002 */
2003 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
2004 }
2005
2006 txn->req.msg_state = HTTP_MSG_ERROR;
2007 txn->status = 400;
2008 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
2009 s->fe->failed_req++;
2010
2011 return_prx_cond:
2012 if (!(s->flags & SN_ERR_MASK))
2013 s->flags |= SN_ERR_PRXCOND;
2014 if (!(s->flags & SN_FINST_MASK))
2015 s->flags |= SN_FINST_R;
2016
2017 req->analysers = 0;
2018 req->analyse_exp = TICK_ETERNITY;
2019 return 0;
2020}
2021
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2022/* This stream analyser runs all HTTP request processing which is common to
2023 * frontends and backends, which means blocking ACLs, filters, connection-close,
2024 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2025 * It returns 1 if the processing can continue on next analysers, or zero if it
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2026 * either needs more data or wants to immediately abort the request (eg: deny,
2027 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2028 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2029int http_process_req_common(struct session *s, struct buffer *req, int an_bit, struct proxy *px)
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2030{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2031 struct http_txn *txn = &s->txn;
2032 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2033 struct acl_cond *cond;
2034 struct redirect_rule *rule;
2035 int cur_idx;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2036
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2037 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
2038 /* we need more data */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2039 buffer_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2040 return 0;
2041 }
2042
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2043 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2044 req->analyse_exp = TICK_ETERNITY;
2045
2046 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
2047 now_ms, __FUNCTION__,
2048 s,
2049 req,
2050 req->rex, req->wex,
2051 req->flags,
2052 req->l,
2053 req->analysers);
2054
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2055 /* first check whether we have some ACLs set to block this request */
2056 list_for_each_entry(cond, &px->block_cond, list) {
2057 int ret = acl_exec_cond(cond, px, s, txn, ACL_DIR_REQ);
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]2058
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2059 ret = acl_pass(ret);
2060 if (cond->pol == ACL_COND_UNLESS)
2061 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]2062
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2063 if (ret) {
2064 txn->status = 403;
2065 /* let's log the request time */
2066 s->logs.tv_request = now;
2067 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_403));
2068 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2069 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2070 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2071
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2072 /* try headers filters */
2073 if (px->req_exp != NULL) {
2074 if (apply_filters_to_request(s, req, px->req_exp) < 0)
2075 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2076
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2077 /* has the request been denied ? */
2078 if (txn->flags & TX_CLDENY) {
2079 /* no need to go further */
2080 txn->status = 403;
2081 /* let's log the request time */
2082 s->logs.tv_request = now;
2083 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_403));
2084 goto return_prx_cond;
2085 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2086
2087 /* When a connection is tarpitted, we use the tarpit timeout,
2088 * which may be the same as the connect timeout if unspecified.
2089 * If unset, then set it to zero because we really want it to
2090 * eventually expire. We build the tarpit as an analyser.
2091 */
2092 if (txn->flags & TX_CLTARPIT) {
2093 buffer_erase(s->req);
2094 /* wipe the request out so that we can drop the connection early
2095 * if the client closes first.
2096 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2097 buffer_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2098 req->analysers = 0; /* remove switching rules etc... */
2099 req->analysers |= AN_REQ_HTTP_TARPIT;
2100 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
2101 if (!req->analyse_exp)
2102 req->analyse_exp = tick_add(now_ms, 0);
2103 return 1;
2104 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2105 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2106
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2107 /* We might have to check for "Connection:" */
2108 if (((s->fe->options | s->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
2109 !(s->flags & SN_CONN_CLOSED)) {
2110 char *cur_ptr, *cur_end, *cur_next;
2111 int old_idx, delta, val;
2112 struct hdr_idx_elem *cur_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2113
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2114 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
2115 old_idx = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2116
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2117 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
2118 cur_hdr = &txn->hdr_idx.v[cur_idx];
2119 cur_ptr = cur_next;
2120 cur_end = cur_ptr + cur_hdr->len;
2121 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2122
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2123 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
2124 if (val) {
2125 /* 3 possibilities :
2126 * - we have already set Connection: close,
2127 * so we remove this line.
2128 * - we have not yet set Connection: close,
2129 * but this line indicates close. We leave
2130 * it untouched and set the flag.
2131 * - we have not yet set Connection: close,
2132 * and this line indicates non-close. We
2133 * replace it.
2134 */
2135 if (s->flags & SN_CONN_CLOSED) {
2136 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
2137 txn->req.eoh += delta;
2138 cur_next += delta;
2139 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
2140 txn->hdr_idx.used--;
2141 cur_hdr->len = 0;
2142 } else {
2143 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
2144 delta = buffer_replace2(req, cur_ptr + val, cur_end,
2145 "close", 5);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2146 cur_next += delta;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2147 cur_hdr->len += delta;
2148 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2149 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2150 s->flags |= SN_CONN_CLOSED;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2151 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2152 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2153 old_idx = cur_idx;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2154 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2155 }
2156 /* add request headers from the rule sets in the same order */
2157 for (cur_idx = 0; cur_idx < px->nb_reqadd; cur_idx++) {
2158 if (unlikely(http_header_add_tail(req,
2159 &txn->req,
2160 &txn->hdr_idx,
2161 px->req_add[cur_idx])) < 0)
2162 goto return_bad_req;
2163 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2164
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2165 /* check if stats URI was requested, and if an auth is needed */
2166 if (px->uri_auth != NULL &&
2167 (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)) {
2168 /* we have to check the URI and auth for this request.
2169 * FIXME!!! that one is rather dangerous, we want to
2170 * make it follow standard rules (eg: clear req->analysers).
2171 */
2172 if (stats_check_uri_auth(s, px)) {
2173 req->analysers = 0;
2174 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2175 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2176 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2177
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2178 /* check whether we have some ACLs set to redirect this request */
2179 list_for_each_entry(rule, &px->redirect_rules, list) {
2180 int ret = acl_exec_cond(rule->cond, px, s, txn, ACL_DIR_REQ);
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2181
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2182 ret = acl_pass(ret);
2183 if (rule->cond->pol == ACL_COND_UNLESS)
2184 ret = !ret;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2185
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2186 if (ret) {
2187 struct chunk rdr = { trash, 0 };
2188 const char *msg_fmt;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2189
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2190 /* build redirect message */
2191 switch(rule->code) {
2192 case 303:
2193 rdr.len = strlen(HTTP_303);
2194 msg_fmt = HTTP_303;
2195 break;
2196 case 301:
2197 rdr.len = strlen(HTTP_301);
2198 msg_fmt = HTTP_301;
2199 break;
2200 case 302:
2201 default:
2202 rdr.len = strlen(HTTP_302);
2203 msg_fmt = HTTP_302;
2204 break;
2205 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2206
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2207 if (unlikely(rdr.len > sizeof(trash)))
2208 goto return_bad_req;
2209 memcpy(rdr.str, msg_fmt, rdr.len);
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2210
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2211 switch(rule->type) {
2212 case REDIRECT_TYPE_PREFIX: {
2213 const char *path;
2214 int pathlen;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2215
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2216 path = http_get_path(txn);
2217 /* build message using path */
2218 if (path) {
2219 pathlen = txn->req.sl.rq.u_l + (txn->req.sol+txn->req.sl.rq.u) - path;
2220 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
2221 int qs = 0;
2222 while (qs < pathlen) {
2223 if (path[qs] == '?') {
2224 pathlen = qs;
2225 break;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2226 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2227 qs++;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2228 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2229 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2230 } else {
2231 path = "/";
2232 pathlen = 1;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2233 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2234
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2235 if (rdr.len + rule->rdr_len + pathlen > sizeof(trash) - 4)
2236 goto return_bad_req;
2237
2238 /* add prefix. Note that if prefix == "/", we don't want to
2239 * add anything, otherwise it makes it hard for the user to
2240 * configure a self-redirection.
2241 */
2242 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2243 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
2244 rdr.len += rule->rdr_len;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2245 }
2246
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2247 /* add path */
2248 memcpy(rdr.str + rdr.len, path, pathlen);
2249 rdr.len += pathlen;
2250 break;
2251 }
2252 case REDIRECT_TYPE_LOCATION:
2253 default:
2254 if (rdr.len + rule->rdr_len > sizeof(trash) - 4)
2255 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2256
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2257 /* add location */
2258 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
2259 rdr.len += rule->rdr_len;
2260 break;
2261 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2262
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2263 if (rule->cookie_len) {
2264 memcpy(rdr.str + rdr.len, "\r\nSet-Cookie: ", 14);
2265 rdr.len += 14;
2266 memcpy(rdr.str + rdr.len, rule->cookie_str, rule->cookie_len);
2267 rdr.len += rule->cookie_len;
2268 memcpy(rdr.str + rdr.len, "\r\n", 2);
2269 rdr.len += 2;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2270 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2271
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2272 /* add end of headers */
2273 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
2274 rdr.len += 4;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2275
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2276 txn->status = rule->code;
2277 /* let's log the request time */
2278 s->logs.tv_request = now;
2279 stream_int_retnclose(req->prod, &rdr);
2280 goto return_prx_cond;
2281 }
2282 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2283
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2284 /* that's OK for us now, let's move on to next analysers */
2285 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2286
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2287 return_bad_req:
2288 /* We centralize bad requests processing here */
2289 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2290 /* we detected a parsing error. We want to archive this request
2291 * in the dedicated proxy area for later troubleshooting.
2292 */
2293 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
2294 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2295
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2296 txn->req.msg_state = HTTP_MSG_ERROR;
2297 txn->status = 400;
2298 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
2299 s->fe->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]2300
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2301 return_prx_cond:
2302 if (!(s->flags & SN_ERR_MASK))
2303 s->flags |= SN_ERR_PRXCOND;
2304 if (!(s->flags & SN_FINST_MASK))
2305 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]2306
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2307 req->analysers = 0;
2308 req->analyse_exp = TICK_ETERNITY;
2309 return 0;
2310}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2311
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2312/* This function performs all the processing enabled for the current request.
2313 * It returns 1 if the processing can continue on next analysers, or zero if it
2314 * needs more data, encounters an error, or wants to immediately abort the
2315 * request. It relies on buffers flags, and updates s->req->analysers.
2316 */
2317int http_process_request(struct session *s, struct buffer *req, int an_bit)
2318{
2319 struct http_txn *txn = &s->txn;
2320 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2321
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2322 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
2323 /* we need more data */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2324 buffer_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2325 return 0;
2326 }
2327
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2328 req->analysers &= ~an_bit;
2329 req->analyse_exp = TICK_ETERNITY;
2330
2331 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
2332 now_ms, __FUNCTION__,
2333 s,
2334 req,
2335 req->rex, req->wex,
2336 req->flags,
2337 req->l,
2338 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2339
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2340 /*
2341 * Right now, we know that we have processed the entire headers
2342 * and that unwanted requests have been filtered out. We can do
2343 * whatever we want with the remaining request. Also, now we
2344 * may have separate values for ->fe, ->be.
2345 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2346
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2347 /*
2348 * If HTTP PROXY is set we simply get remote server address
2349 * parsing incoming request.
2350 */
2351 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
2352 url2sa(req->data + msg->sl.rq.u, msg->sl.rq.u_l, &s->srv_addr);
2353 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2354
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2355 /*
2356 * 7: the appsession cookie was looked up very early in 1.2,
2357 * so let's do the same now.
2358 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2359
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2360 /* It needs to look into the URI */
2361 if (s->be->appsession_name) {
2362 get_srv_from_appsession(s, &req->data[msg->som], msg->sl.rq.l);
2363 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2364
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2365 /*
2366 * 8: Now we can work with the cookies.
2367 * Note that doing so might move headers in the request, but
2368 * the fields will stay coherent and the URI will not move.
2369 * This should only be performed in the backend.
2370 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]2371 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2372 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
2373 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2374
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2375 /*
2376 * 9: add X-Forwarded-For if either the frontend or the backend
2377 * asks for it.
2378 */
2379 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
2380 if (s->cli_addr.ss_family == AF_INET) {
2381 /* Add an X-Forwarded-For header unless the source IP is
2382 * in the 'except' network range.
2383 */
2384 if ((!s->fe->except_mask.s_addr ||
2385 (((struct sockaddr_in *)&s->cli_addr)->sin_addr.s_addr & s->fe->except_mask.s_addr)
2386 != s->fe->except_net.s_addr) &&
2387 (!s->be->except_mask.s_addr ||
2388 (((struct sockaddr_in *)&s->cli_addr)->sin_addr.s_addr & s->be->except_mask.s_addr)
2389 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2390 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2391 unsigned char *pn;
2392 pn = (unsigned char *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2393
2394 /* Note: we rely on the backend to get the header name to be used for
2395 * x-forwarded-for, because the header is really meant for the backends.
2396 * However, if the backend did not specify any option, we have to rely
2397 * on the frontend's header name.
2398 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2399 if (s->be->fwdfor_hdr_len) {
2400 len = s->be->fwdfor_hdr_len;
2401 memcpy(trash, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2402 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2403 len = s->fe->fwdfor_hdr_len;
2404 memcpy(trash, s->fe->fwdfor_hdr_name, len);
2405 }
2406 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]2407
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2408 if (unlikely(http_header_add_tail2(req, &txn->req,
2409 &txn->hdr_idx, trash, len)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2410 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2411 }
2412 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2413 else if (s->cli_addr.ss_family == AF_INET6) {
2414 /* FIXME: for the sake of completeness, we should also support
2415 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2416 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2417 int len;
2418 char pn[INET6_ADDRSTRLEN];
2419 inet_ntop(AF_INET6,
2420 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
2421 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2422
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2423 /* Note: we rely on the backend to get the header name to be used for
2424 * x-forwarded-for, because the header is really meant for the backends.
2425 * However, if the backend did not specify any option, we have to rely
2426 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2427 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2428 if (s->be->fwdfor_hdr_len) {
2429 len = s->be->fwdfor_hdr_len;
2430 memcpy(trash, s->be->fwdfor_hdr_name, len);
2431 } else {
2432 len = s->fe->fwdfor_hdr_len;
2433 memcpy(trash, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2434 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2435 len += sprintf(trash + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2436
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2437 if (unlikely(http_header_add_tail2(req, &txn->req,
2438 &txn->hdr_idx, trash, len)) < 0)
2439 goto return_bad_req;
2440 }
2441 }
2442
2443 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]2444 * 10: add X-Original-To if either the frontend or the backend
2445 * asks for it.
2446 */
2447 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
2448
2449 /* FIXME: don't know if IPv6 can handle that case too. */
2450 if (s->cli_addr.ss_family == AF_INET) {
2451 /* Add an X-Original-To header unless the destination IP is
2452 * in the 'except' network range.
2453 */
2454 if (!(s->flags & SN_FRT_ADDR_SET))
2455 get_frt_addr(s);
2456
2457 if ((!s->fe->except_mask_to.s_addr ||
2458 (((struct sockaddr_in *)&s->frt_addr)->sin_addr.s_addr & s->fe->except_mask_to.s_addr)
2459 != s->fe->except_to.s_addr) &&
2460 (!s->be->except_mask_to.s_addr ||
2461 (((struct sockaddr_in *)&s->frt_addr)->sin_addr.s_addr & s->be->except_mask_to.s_addr)
2462 != s->be->except_to.s_addr)) {
2463 int len;
2464 unsigned char *pn;
2465 pn = (unsigned char *)&((struct sockaddr_in *)&s->frt_addr)->sin_addr;
2466
2467 /* Note: we rely on the backend to get the header name to be used for
2468 * x-original-to, because the header is really meant for the backends.
2469 * However, if the backend did not specify any option, we have to rely
2470 * on the frontend's header name.
2471 */
2472 if (s->be->orgto_hdr_len) {
2473 len = s->be->orgto_hdr_len;
2474 memcpy(trash, s->be->orgto_hdr_name, len);
2475 } else {
2476 len = s->fe->orgto_hdr_len;
2477 memcpy(trash, s->fe->orgto_hdr_name, len);
2478 }
2479 len += sprintf(trash + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
2480
2481 if (unlikely(http_header_add_tail2(req, &txn->req,
2482 &txn->hdr_idx, trash, len)) < 0)
2483 goto return_bad_req;
2484 }
2485 }
2486 }
2487
2488 /*
2489 * 11: add "Connection: close" if needed and not yet set.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2490 * Note that we do not need to add it in case of HTTP/1.0.
2491 */
2492 if (!(s->flags & SN_CONN_CLOSED) &&
2493 ((s->fe->options | s->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) {
2494 if ((unlikely(msg->sl.rq.v_l != 8) ||
2495 unlikely(req->data[msg->som + msg->sl.rq.v + 7] != '0')) &&
2496 unlikely(http_header_add_tail2(req, &txn->req, &txn->hdr_idx,
2497 "Connection: close", 17)) < 0)
2498 goto return_bad_req;
2499 s->flags |= SN_CONN_CLOSED;
2500 }
2501 /* Before we switch to data, was assignment set in manage_client_side_cookie?
2502 * If not assigned, perhaps we are balancing on url_param, but this is a
2503 * POST; and the parameters are in the body, maybe scan there to find our server.
2504 * (unless headers overflowed the buffer?)
2505 */
2506 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
2507 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
2508 s->be->url_param_post_limit != 0 && !(req->flags & BF_FULL) &&
2509 memchr(msg->sol + msg->sl.rq.u, '?', msg->sl.rq.u_l) == NULL) {
2510 /* are there enough bytes here? total == l || r || rlim ?
2511 * len is unsigned, but eoh is int,
2512 * how many bytes of body have we received?
2513 * eoh is the first empty line of the header
2514 */
2515 /* already established CRLF or LF at eoh, move to start of message, find message length in buffer */
2516 unsigned long len = req->l - (msg->sol[msg->eoh] == '\r' ? msg->eoh + 2 : msg->eoh + 1);
2517
2518 /* If we have HTTP/1.1 and Expect: 100-continue, then abort.
2519 * We can't assume responsibility for the server's decision,
2520 * on this URI and header set. See rfc2616: 14.20, 8.2.3,
2521 * We also can't change our mind later, about which server to choose, so round robin.
2522 */
2523 if ((likely(msg->sl.rq.v_l == 8) && req->data[msg->som + msg->sl.rq.v + 7] == '1')) {
2524 struct hdr_ctx ctx;
2525 ctx.idx = 0;
2526 /* Expect is allowed in 1.1, look for it */
2527 http_find_header2("Expect", 6, msg->sol, &txn->hdr_idx, &ctx);
2528 if (ctx.idx != 0 &&
2529 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0))
2530 /* We can't reliablly stall and wait for data, because of
2531 * .NET clients that don't conform to rfc2616; so, no need for
2532 * the next block to check length expectations.
2533 * We could send 100 status back to the client, but then we need to
2534 * re-write headers, and send the message. And this isn't the right
2535 * place for that action.
2536 * TODO: support Expect elsewhere and delete this block.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2537 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2538 goto end_check_maybe_wait_for_body;
2539 }
2540
2541 if (likely(len > s->be->url_param_post_limit)) {
2542 /* nothing to do, we got enough */
2543 } else {
2544 /* limit implies we are supposed to need this many bytes
2545 * to find the parameter. Let's see how many bytes we can wait for.
2546 */
2547 long long hint = len;
2548 struct hdr_ctx ctx;
2549 ctx.idx = 0;
2550 http_find_header2("Transfer-Encoding", 17, msg->sol, &txn->hdr_idx, &ctx);
2551 if (ctx.idx && ctx.vlen >= 7 && strncasecmp(ctx.line+ctx.val, "chunked", 7) == 0) {
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2552 buffer_dont_connect(req);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2553 req->analysers |= AN_REQ_HTTP_BODY;
2554 }
2555 else {
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2556 ctx.idx = 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2557 http_find_header2("Content-Length", 14, msg->sol, &txn->hdr_idx, &ctx);
2558 /* now if we have a length, we'll take the hint */
2559 if (ctx.idx) {
2560 /* We have Content-Length */
2561 if (strl2llrc(ctx.line+ctx.val,ctx.vlen, &hint))
2562 hint = 0; /* parse failure, untrusted client */
2563 else {
2564 if (hint > 0)
2565 msg->hdr_content_len = hint;
2566 else
2567 hint = 0; /* bad client, sent negative length */
2568 }
2569 }
2570 /* but limited to what we care about, maybe we don't expect any entity data (hint == 0) */
2571 if (s->be->url_param_post_limit < hint)
2572 hint = s->be->url_param_post_limit;
2573 /* now do we really need to buffer more data? */
2574 if (len < hint) {
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2575 buffer_dont_connect(req);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2576 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2577 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2578 /* else... There are no body bytes to wait for */
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2579 }
2580 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2581 }
2582 end_check_maybe_wait_for_body:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2583
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2584 /*************************************************************
2585 * OK, that's finished for the headers. We have done what we *
2586 * could. Let's switch to the DATA state. *
2587 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2588
Willy Tarreaua07a34e2009-08-16 23:27:46 +0200[diff] [blame]2589 buffer_set_rlim(req, req->size); /* no more rewrite needed */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2590 s->logs.tv_request = now;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2591
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2592 /* OK let's go on with the BODY now */
2593 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2594
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2595 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2596 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]2597 /* we detected a parsing error. We want to archive this request
2598 * in the dedicated proxy area for later troubleshooting.
2599 */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2600 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]2601 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2602
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2603 txn->req.msg_state = HTTP_MSG_ERROR;
2604 txn->status = 400;
2605 req->analysers = 0;
2606 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
2607 s->fe->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2608
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2609 if (!(s->flags & SN_ERR_MASK))
2610 s->flags |= SN_ERR_PRXCOND;
2611 if (!(s->flags & SN_FINST_MASK))
2612 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2613 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2614}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2615
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2616/* This function is an analyser which processes the HTTP tarpit. It always
2617 * returns zero, at the beginning because it prevents any other processing
2618 * from occurring, and at the end because it terminates the request.
2619 */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2620int http_process_tarpit(struct session *s, struct buffer *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2621{
2622 struct http_txn *txn = &s->txn;
2623
2624 /* This connection is being tarpitted. The CLIENT side has
2625 * already set the connect expiration date to the right
2626 * timeout. We just have to check that the client is still
2627 * there and that the timeout has not expired.
2628 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2629 buffer_dont_connect(req);
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2630 if ((req->flags & (BF_SHUTR|BF_READ_ERROR)) == 0 &&
2631 !tick_is_expired(req->analyse_exp, now_ms))
2632 return 0;
2633
2634 /* We will set the queue timer to the time spent, just for
2635 * logging purposes. We fake a 500 server error, so that the
2636 * attacker will not suspect his connection has been tarpitted.
2637 * It will not cause trouble to the logs because we can exclude
2638 * the tarpitted connections by filtering on the 'PT' status flags.
2639 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2640 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
2641
2642 txn->status = 500;
2643 if (req->flags != BF_READ_ERROR)
2644 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_500));
2645
2646 req->analysers = 0;
2647 req->analyse_exp = TICK_ETERNITY;
2648
2649 s->fe->failed_req++;
2650 if (!(s->flags & SN_ERR_MASK))
2651 s->flags |= SN_ERR_PRXCOND;
2652 if (!(s->flags & SN_FINST_MASK))
2653 s->flags |= SN_FINST_T;
2654 return 0;
2655}
2656
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2657/* This function is an analyser which processes the HTTP request body. It looks
2658 * for parameters to be used for the load balancing algorithm (url_param). It
2659 * must only be called after the standard HTTP request processing has occurred,
2660 * because it expects the request to be parsed. It returns zero if it needs to
2661 * read more data, or 1 once it has completed its analysis.
2662 */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2663int http_process_request_body(struct session *s, struct buffer *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2664{
2665 struct http_msg *msg = &s->txn.req;
2666 unsigned long body = msg->sol[msg->eoh] == '\r' ? msg->eoh + 2 : msg->eoh + 1;
2667 long long limit = s->be->url_param_post_limit;
2668 struct hdr_ctx ctx;
2669
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2670 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
2671 /* we need more data */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2672 buffer_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2673 return 0;
2674 }
2675
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2676 /* We have to parse the HTTP request body to find any required data.
2677 * "balance url_param check_post" should have been the only way to get
2678 * into this. We were brought here after HTTP header analysis, so all
2679 * related structures are ready.
2680 */
2681
2682 ctx.idx = 0;
2683
2684 /* now if we have a length, we'll take the hint */
2685 http_find_header2("Transfer-Encoding", 17, msg->sol, &s->txn.hdr_idx, &ctx);
2686 if (ctx.idx && ctx.vlen >= 7 && strncasecmp(ctx.line+ctx.val, "chunked", 7) == 0) {
2687 unsigned int chunk = 0;
2688 while (body < req->l && !HTTP_IS_CRLF(msg->sol[body])) {
2689 char c = msg->sol[body];
2690 if (ishex(c)) {
2691 unsigned int hex = toupper(c) - '0';
2692 if (hex > 9)
2693 hex -= 'A' - '9' - 1;
2694 chunk = (chunk << 4) | hex;
2695 } else
2696 break;
2697 body++;
2698 }
2699 if (body + 2 >= req->l) /* we want CRLF too */
2700 goto http_body_end; /* end of buffer? data missing! */
2701
2702 if (memcmp(msg->sol+body, "\r\n", 2) != 0)
2703 goto http_body_end; /* chunked encoding len ends with CRLF, and we don't have it yet */
2704
2705 body += 2; // skip CRLF
2706
2707 /* if we support more then one chunk here, we have to do it again when assigning server
2708 * 1. how much entity data do we have? new var
2709 * 2. should save entity_start, entity_cursor, elen & rlen in req; so we don't repeat scanning here
2710 * 3. test if elen > limit, or set new limit to elen if 0 (end of entity found)
2711 */
2712
2713 if (chunk < limit)
2714 limit = chunk; /* only reading one chunk */
2715 } else {
2716 if (msg->hdr_content_len < limit)
2717 limit = msg->hdr_content_len;
2718 }
2719
2720 http_body_end:
2721 /* we leave once we know we have nothing left to do. This means that we have
2722 * enough bytes, or that we know we'll not get any more (buffer full, read
2723 * buffer closed).
2724 */
2725 if (req->l - body >= limit || /* enough bytes! */
2726 req->flags & (BF_FULL | BF_READ_ERROR | BF_SHUTR | BF_READ_TIMEOUT) ||
2727 tick_is_expired(req->analyse_exp, now_ms)) {
2728 /* The situation will not evolve, so let's give up on the analysis. */
2729 s->logs.tv_request = now; /* update the request timer to reflect full request */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2730 req->analysers &= ~an_bit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2731 req->analyse_exp = TICK_ETERNITY;
2732 return 1;
2733 }
2734 else {
2735 /* Not enough data. We'll re-use the http-request
2736 * timeout here. Ideally, we should set the timeout
2737 * relative to the accept() date. We just set the
2738 * request timeout once at the beginning of the
2739 * request.
2740 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2741 buffer_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2742 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]2743 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2744 return 0;
2745 }
2746}
2747
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2748/* This function performs all the processing enabled for the current response.
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2749 * It normally returns zero, but may return 1 if it absolutely needs to be
2750 * called again after other functions. It relies on buffers flags, and updates
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2751 * t->rep->analysers. It might make sense to explode it into several other
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2752 * functions. It works like process_request (see indications above).
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2753 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2754int process_response(struct session *t)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2755{
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2756 struct http_txn *txn = &t->txn;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2757 struct buffer *req = t->req;
2758 struct buffer *rep = t->rep;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2759
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]2760 next_response:
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2761 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]2762 now_ms, __FUNCTION__,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2763 t,
2764 rep,
2765 rep->rex, rep->wex,
2766 rep->flags,
2767 rep->l,
2768 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]2769
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2770 if (rep->analysers & AN_RTR_HTTP_HDR) { /* receiving server headers */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2771 /*
2772 * Now parse the partial (or complete) lines.
2773 * We will check the response syntax, and also join multi-line
2774 * headers. An index of all the lines will be elaborated while
2775 * parsing.
2776 *
2777 * For the parsing, we use a 28 states FSM.
2778 *
2779 * Here is the information we currently have :
Willy Tarreaue393fe22008-08-16 22:18:07 +0200[diff] [blame]2780 * rep->data + rep->som = beginning of response
2781 * rep->data + rep->eoh = end of processed headers / start of current one
2782 * rep->data + rep->eol = end of current header or line (LF or CRLF)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2783 * rep->lr = first non-visited byte
2784 * rep->r = end of data
2785 */
Willy Tarreau7f875f62008-08-11 17:35:01 +0200[diff] [blame]2786
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2787 int cur_idx;
2788 struct http_msg *msg = &txn->rsp;
2789 struct proxy *cur_proxy;
2790
2791 if (likely(rep->lr < rep->r))
2792 http_msg_analyzer(rep, msg, &txn->hdr_idx);
2793
2794 /* 1: we might have to print this header in debug mode */
2795 if (unlikely((global.mode & MODE_DEBUG) &&
2796 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
2797 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
2798 char *eol, *sol;
2799
2800 sol = rep->data + msg->som;
2801 eol = sol + msg->sl.rq.l;
2802 debug_hdr("srvrep", t, sol, eol);
2803
2804 sol += hdr_idx_first_pos(&txn->hdr_idx);
2805 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
2806
2807 while (cur_idx) {
2808 eol = sol + txn->hdr_idx.v[cur_idx].len;
2809 debug_hdr("srvhdr", t, sol, eol);
2810 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2811 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2812 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2813 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2814
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2815 /*
2816 * Now we quickly check if we have found a full valid response.
2817 * If not so, we check the FD and buffer states before leaving.
2818 * A full response is indicated by the fact that we have seen
2819 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
2820 * responses are checked first.
2821 *
2822 * Depending on whether the client is still there or not, we
2823 * may send an error response back or not. Note that normally
2824 * we should only check for HTTP status there, and check I/O
2825 * errors somewhere else.
2826 */
2827
2828 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2829 /* Invalid response */
2830 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]2831 /* we detected a parsing error. We want to archive this response
2832 * in the dedicated proxy area for later troubleshooting.
2833 */
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2834 hdr_response_bad:
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2835 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
2836 http_capture_bad_message(&t->be->invalid_rep, t, rep, msg, t->fe);
2837
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2838 buffer_shutr_now(rep);
2839 buffer_shutw_now(req);
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2840 if (t->srv)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2841 t->srv->failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2842 t->be->failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2843 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2844 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2845 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2846 if (!(t->flags & SN_ERR_MASK))
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2847 t->flags |= SN_ERR_PRXCOND;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2848 if (!(t->flags & SN_FINST_MASK))
2849 t->flags |= SN_FINST_H;
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]2850
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2851 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2852 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2853 /* too large response does not fit in buffer. */
2854 else if (rep->flags & BF_FULL) {
2855 goto hdr_response_bad;
2856 }
2857 /* read error */
2858 else if (rep->flags & BF_READ_ERROR) {
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2859 if (msg->err_pos >= 0)
2860 http_capture_bad_message(&t->be->invalid_rep, t, rep, msg, t->fe);
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2861 buffer_shutr_now(rep);
2862 buffer_shutw_now(req);
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2863 if (t->srv)
2864 t->srv->failed_resp++;
2865 t->be->failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2866 rep->analysers = 0;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2867 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2868 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2869 if (!(t->flags & SN_ERR_MASK))
2870 t->flags |= SN_ERR_SRVCL;
2871 if (!(t->flags & SN_FINST_MASK))
2872 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2873 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2874 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2875 /* read timeout : return a 504 to the client. */
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2876 else if (rep->flags & BF_READ_TIMEOUT) {
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2877 if (msg->err_pos >= 0)
2878 http_capture_bad_message(&t->be->invalid_rep, t, rep, msg, t->fe);
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2879 buffer_shutr_now(rep);
2880 buffer_shutw_now(req);
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2881 if (t->srv)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2882 t->srv->failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2883 t->be->failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2884 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2885 txn->status = 504;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2886 stream_int_return(rep->cons, error_message(t, HTTP_ERR_504));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2887 if (!(t->flags & SN_ERR_MASK))
2888 t->flags |= SN_ERR_SRVTO;
2889 if (!(t->flags & SN_FINST_MASK))
2890 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2891 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2892 }
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2893 /* close from server */
2894 else if (rep->flags & BF_SHUTR) {
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2895 if (msg->err_pos >= 0)
2896 http_capture_bad_message(&t->be->invalid_rep, t, rep, msg, t->fe);
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2897 buffer_shutw_now(req);
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2898 if (t->srv)
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2899 t->srv->failed_resp++;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2900 t->be->failed_resp++;
2901 rep->analysers = 0;
2902 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2903 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2904 if (!(t->flags & SN_ERR_MASK))
2905 t->flags |= SN_ERR_SRVCL;
2906 if (!(t->flags & SN_FINST_MASK))
2907 t->flags |= SN_FINST_H;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2908 return 0;
2909 }
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2910 /* write error to client (we don't send any message then) */
2911 else if (rep->flags & BF_WRITE_ERROR) {
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2912 if (msg->err_pos >= 0)
2913 http_capture_bad_message(&t->be->invalid_rep, t, rep, msg, t->fe);
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2914 buffer_shutr_now(rep);
2915 t->be->failed_resp++;
2916 rep->analysers = 0;
2917 if (!(t->flags & SN_ERR_MASK))
2918 t->flags |= SN_ERR_CLICL;
2919 if (!(t->flags & SN_FINST_MASK))
2920 t->flags |= SN_FINST_H;
2921 return 0;
2922 }
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]2923
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2924 buffer_dont_close(rep);
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2925 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2926 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2927
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2928
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2929 /*****************************************************************
2930 * More interesting part now : we know that we have a complete *
2931 * response which at least looks like HTTP. We have an indicator *
2932 * of each header's length, so we can parse them quickly. *
2933 ****************************************************************/
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2934
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2935 if (msg->err_pos >= 0)
2936 http_capture_bad_message(&t->be->invalid_rep, t, rep, msg, t->fe);
2937
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2938 rep->analysers &= ~AN_RTR_HTTP_HDR;
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]2939
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2940 /* ensure we keep this pointer to the beginning of the message */
2941 msg->sol = rep->data + msg->som;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2942
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2943 /*
2944 * 1: get the status code and check for cacheability.
2945 */
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2946
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2947 t->logs.logwait &= ~LW_RESP;
2948 txn->status = strl2ui(rep->data + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2949
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2950 switch (txn->status) {
2951 case 200:
2952 case 203:
2953 case 206:
2954 case 300:
2955 case 301:
2956 case 410:
2957 /* RFC2616 @13.4:
2958 * "A response received with a status code of
2959 * 200, 203, 206, 300, 301 or 410 MAY be stored
2960 * by a cache (...) unless a cache-control
2961 * directive prohibits caching."
2962 *
2963 * RFC2616 @9.5: POST method :
2964 * "Responses to this method are not cacheable,
2965 * unless the response includes appropriate
2966 * Cache-Control or Expires header fields."
2967 */
2968 if (likely(txn->meth != HTTP_METH_POST) &&
2969 (t->be->options & (PR_O_CHK_CACHE|PR_O_COOK_NOC)))
2970 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
2971 break;
2972 default:
2973 break;
2974 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2975
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2976 /*
2977 * 2: we may need to capture headers
2978 */
2979 if (unlikely((t->logs.logwait & LW_RSPHDR) && t->fe->rsp_cap))
2980 capture_headers(rep->data + msg->som, &txn->hdr_idx,
2981 txn->rsp.cap, t->fe->rsp_cap);
2982
2983 /*
2984 * 3: we will have to evaluate the filters.
2985 * As opposed to version 1.2, now they will be evaluated in the
2986 * filters order and not in the header order. This means that
2987 * each filter has to be validated among all headers.
2988 *
2989 * Filters are tried with ->be first, then with ->fe if it is
2990 * different from ->be.
2991 */
2992
2993 t->flags &= ~SN_CONN_CLOSED; /* prepare for inspection */
2994
2995 cur_proxy = t->be;
2996 while (1) {
2997 struct proxy *rule_set = cur_proxy;
2998
2999 /* try headers filters */
3000 if (rule_set->rsp_exp != NULL) {
3001 if (apply_filters_to_response(t, rep, rule_set->rsp_exp) < 0) {
3002 return_bad_resp:
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]3003 if (t->srv)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3004 t->srv->failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3005 cur_proxy->failed_resp++;
3006 return_srv_prx_502:
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3007 buffer_shutr_now(rep);
3008 buffer_shutw_now(req);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]3009 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3010 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]3011 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3012 if (!(t->flags & SN_ERR_MASK))
3013 t->flags |= SN_ERR_PRXCOND;
3014 if (!(t->flags & SN_FINST_MASK))
3015 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3016 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3017 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3018 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3019
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3020 /* has the response been denied ? */
3021 if (txn->flags & TX_SVDENY) {
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]3022 if (t->srv)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3023 t->srv->failed_secu++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3024 cur_proxy->denied_resp++;
3025 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]3026 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3027
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3028 /* We might have to check for "Connection:" */
3029 if (((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3030 !(t->flags & SN_CONN_CLOSED) &&
3031 txn->status >= 200) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3032 char *cur_ptr, *cur_end, *cur_next;
3033 int cur_idx, old_idx, delta, val;
3034 struct hdr_idx_elem *cur_hdr;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3035
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3036 cur_next = rep->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
3037 old_idx = 0;
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]3038
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3039 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
3040 cur_hdr = &txn->hdr_idx.v[cur_idx];
3041 cur_ptr = cur_next;
3042 cur_end = cur_ptr + cur_hdr->len;
3043 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3044
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3045 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
3046 if (val) {
3047 /* 3 possibilities :
3048 * - we have already set Connection: close,
3049 * so we remove this line.
3050 * - we have not yet set Connection: close,
3051 * but this line indicates close. We leave
3052 * it untouched and set the flag.
3053 * - we have not yet set Connection: close,
3054 * and this line indicates non-close. We
3055 * replace it.
3056 */
3057 if (t->flags & SN_CONN_CLOSED) {
3058 delta = buffer_replace2(rep, cur_ptr, cur_next, NULL, 0);
3059 txn->rsp.eoh += delta;
3060 cur_next += delta;
3061 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3062 txn->hdr_idx.used--;
3063 cur_hdr->len = 0;
3064 } else {
3065 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
3066 delta = buffer_replace2(rep, cur_ptr + val, cur_end,
3067 "close", 5);
3068 cur_next += delta;
3069 cur_hdr->len += delta;
3070 txn->rsp.eoh += delta;
3071 }
3072 t->flags |= SN_CONN_CLOSED;
3073 }
3074 }
3075 old_idx = cur_idx;
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]3076 }
3077 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3078
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3079 /* add response headers from the rule sets in the same order */
3080 for (cur_idx = 0; cur_idx < rule_set->nb_rspadd; cur_idx++) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3081 if (txn->status < 200)
3082 break;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3083 if (unlikely(http_header_add_tail(rep, &txn->rsp, &txn->hdr_idx,
3084 rule_set->rsp_add[cur_idx])) < 0)
3085 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]3086 }
3087
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3088 /* check whether we're already working on the frontend */
3089 if (cur_proxy == t->fe)
3090 break;
3091 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3092 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3093
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3094 /*
3095 * 4: check for server cookie.
3096 */
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3097 if ((t->be->cookie_name || t->be->appsession_name || t->fe->capture_name
3098 || (t->be->options & PR_O_CHK_CACHE)) && txn->status >= 200)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3099 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3100
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3101
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3102 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3103 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3104 */
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3105 if ((t->be->options & (PR_O_COOK_NOC | PR_O_CHK_CACHE)) != 0 && txn->status >= 200)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3106 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3107
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3108 /*
3109 * 6: add server cookie in the response if needed
3110 */
3111 if ((t->srv) && !(t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_INS) &&
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3112 (!(t->be->options & PR_O_COOK_POST) || (txn->meth == HTTP_METH_POST)) &&
3113 txn->status >= 200) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3114 int len;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3115
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3116 /* the server is known, it's not the one the client requested, we have to
3117 * insert a set-cookie here, except if we want to insert only on POST
3118 * requests and this one isn't. Note that servers which don't have cookies
3119 * (eg: some backup servers) will return a full cookie removal request.
3120 */
3121 len = sprintf(trash, "Set-Cookie: %s=%s; path=/",
3122 t->be->cookie_name,
3123 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]3124
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3125 if (t->be->cookie_domain)
3126 len += sprintf(trash+len, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3127
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3128 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3129 trash, len)) < 0)
3130 goto return_bad_resp;
3131 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3132
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3133 /* Here, we will tell an eventual cache on the client side that we don't
3134 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
3135 * Some caches understand the correct form: 'no-cache="set-cookie"', but
3136 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
3137 */
3138 if ((t->be->options & PR_O_COOK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3139
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3140 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
3141
3142 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3143 "Cache-control: private", 22)) < 0)
3144 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3145 }
3146 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3147
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3148
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3149 /*
3150 * 7: check if result will be cacheable with a cookie.
3151 * We'll block the response if security checks have caught
3152 * nasty things such as a cacheable cookie.
3153 */
3154 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) ==
3155 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) &&
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3156 (t->be->options & PR_O_CHK_CACHE) &&
3157 txn->status >= 200) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3158
3159 /* we're in presence of a cacheable response containing
3160 * a set-cookie header. We'll block it as requested by
3161 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3162 */
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]3163 if (t->srv)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3164 t->srv->failed_secu++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3165 t->be->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3166
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3167 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
3168 t->be->id, t->srv?t->srv->id:"<dispatch>");
3169 send_log(t->be, LOG_ALERT,
3170 "Blocking cacheable cookie in response from instance %s, server %s.\n",
3171 t->be->id, t->srv?t->srv->id:"<dispatch>");
3172 goto return_srv_prx_502;
3173 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3174
3175 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3176 * 8: add "Connection: close" if needed and not yet set.
3177 * 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]3178 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3179 if (!(t->flags & SN_CONN_CLOSED) &&
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3180 ((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
3181 txn->status >= 200) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3182 if ((unlikely(msg->sl.st.v_l != 8) ||
3183 unlikely(req->data[msg->som + 7] != '0')) &&
3184 unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3185 "Connection: close", 17)) < 0)
3186 goto return_bad_resp;
3187 t->flags |= SN_CONN_CLOSED;
3188 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3189
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3190 /*
3191 * 9: we may be facing a 1xx response (100 continue, 101 switching protocols),
3192 * in which case this is not the right response, and we're waiting for the
3193 * next one. Let's allow this response to go to the client and wait for the
3194 * next one.
3195 */
3196 if (txn->status < 200) {
3197 hdr_idx_init(&txn->hdr_idx);
3198 buffer_forward(rep, rep->lr - (rep->data + msg->som));
3199 msg->msg_state = HTTP_MSG_RPBEFORE;
3200 txn->status = 0;
3201 rep->analysers |= AN_RTR_HTTP_HDR;
3202 goto next_response;
3203 }
3204
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3205 /*************************************************************
3206 * OK, that's finished for the headers. We have done what we *
3207 * could. Let's switch to the DATA state. *
3208 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3209
Willy Tarreaua07a34e2009-08-16 23:27:46 +0200[diff] [blame]3210 buffer_set_rlim(rep, rep->size); /* no more rewrite needed */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3211 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3212
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3213 /* if the user wants to log as soon as possible, without counting
3214 * bytes from the server, then this is the right moment. We have
3215 * to temporarily assign bytes_out to log what we currently have.
3216 */
3217 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
3218 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
3219 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]3220 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3221 t->logs.bytes_out = 0;
3222 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3223
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3224 /* Note: we must not try to cheat by jumping directly to DATA,
3225 * otherwise we would not let the client side wake up.
3226 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3227
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3228 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3229 }
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3230
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]3231 /* Note: eventhough nobody should set an unknown flag, clearing them right now will
3232 * probably reduce one day's debugging session.
3233 */
3234#ifdef DEBUG_DEV
3235 if (rep->analysers & ~(AN_RTR_HTTP_HDR)) {
3236 fprintf(stderr, "FIXME !!!! unknown analysers flags %s:%d = 0x%08X\n",
3237 __FILE__, __LINE__, rep->analysers);
3238 ABORT_NOW();
3239 }
3240#endif
3241 rep->analysers &= AN_RTR_HTTP_HDR;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3242 return 0;
3243}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3244
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3245/*
3246 * Produces data for the session <s> depending on its source. Expects to be
Willy Tarreau1ae3a052008-08-16 10:56:30 +0200[diff] [blame]3247 * called with client socket shut down on input. Right now, only statistics can
Willy Tarreau72b179a2008-08-28 16:01:32 +0200[diff] [blame]3248 * be produced. It stops by itself by unsetting the BF_HIJACK flag from the
3249 * 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]3250 * the buffer, or simply by letting an empty buffer upon return.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3251 */
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3252void produce_content(struct session *s, struct buffer *rep)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3253{
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3254 if (s->data_source == DATA_SRC_NONE) {
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3255 buffer_stop_hijack(rep);
3256 return;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3257 }
3258 else if (s->data_source == DATA_SRC_STATS) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3259 /* dump server statistics */
Willy Tarreau0a464892008-12-07 18:30:00 +0100[diff] [blame]3260 int ret = stats_dump_http(s, rep, s->be->uri_auth);
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3261 if (ret >= 0)
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3262 return;
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3263 /* -1 indicates an error */
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3264 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3265
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3266 /* unknown data source or internal error */
3267 s->txn.status = 500;
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3268 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_500));
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3269 if (!(s->flags & SN_ERR_MASK))
3270 s->flags |= SN_ERR_PRXCOND;
3271 if (!(s->flags & SN_FINST_MASK))
3272 s->flags |= SN_FINST_R;
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3273 buffer_stop_hijack(rep);
3274 return;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3275}
3276
3277
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3278/* Iterate the same filter through all request headers.
3279 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3280 * Since it can manage the switch to another backend, it updates the per-proxy
3281 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3282 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3283int 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]3284{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3285 char term;
3286 char *cur_ptr, *cur_end, *cur_next;
3287 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3288 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3289 struct hdr_idx_elem *cur_hdr;
3290 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]3291
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3292 last_hdr = 0;
3293
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3294 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3295 old_idx = 0;
3296
3297 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3298 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3299 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3300 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3301 (exp->action == ACT_ALLOW ||
3302 exp->action == ACT_DENY ||
3303 exp->action == ACT_TARPIT))
3304 return 0;
3305
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3306 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3307 if (!cur_idx)
3308 break;
3309
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3310 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3311 cur_ptr = cur_next;
3312 cur_end = cur_ptr + cur_hdr->len;
3313 cur_next = cur_end + cur_hdr->cr + 1;
3314
3315 /* Now we have one header between cur_ptr and cur_end,
3316 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3317 */
3318
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3319 /* The annoying part is that pattern matching needs
3320 * that we modify the contents to null-terminate all
3321 * strings before testing them.
3322 */
3323
3324 term = *cur_end;
3325 *cur_end = '\0';
3326
3327 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3328 switch (exp->action) {
3329 case ACT_SETBE:
3330 /* It is not possible to jump a second time.
3331 * FIXME: should we return an HTTP/500 here so that
3332 * the admin knows there's a problem ?
3333 */
3334 if (t->be != t->fe)
3335 break;
3336
3337 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3338 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3339 last_hdr = 1;
3340 break;
3341
3342 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3343 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3344 last_hdr = 1;
3345 break;
3346
3347 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3348 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3349 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3350 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3351 break;
3352
3353 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3354 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3355 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3356 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3357 break;
3358
3359 case ACT_REPLACE:
3360 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3361 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3362 /* FIXME: if the user adds a newline in the replacement, the
3363 * index will not be recalculated for now, and the new line
3364 * will not be counted as a new header.
3365 */
3366
3367 cur_end += delta;
3368 cur_next += delta;
3369 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3370 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3371 break;
3372
3373 case ACT_REMOVE:
3374 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
3375 cur_next += delta;
3376
3377 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3378 txn->req.eoh += delta;
3379 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3380 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3381 cur_hdr->len = 0;
3382 cur_end = NULL; /* null-term has been rewritten */
3383 break;
3384
3385 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3386 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3387 if (cur_end)
3388 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3389
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3390 /* keep the link from this header to next one in case of later
3391 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3392 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3393 old_idx = cur_idx;
3394 }
3395 return 0;
3396}
3397
3398
3399/* Apply the filter to the request line.
3400 * Returns 0 if nothing has been done, 1 if the filter has been applied,
3401 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3402 * Since it can manage the switch to another backend, it updates the per-proxy
3403 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3404 */
3405int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
3406{
3407 char term;
3408 char *cur_ptr, *cur_end;
3409 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3410 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3411 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3412
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3413
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3414 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3415 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3416 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3417 (exp->action == ACT_ALLOW ||
3418 exp->action == ACT_DENY ||
3419 exp->action == ACT_TARPIT))
3420 return 0;
3421 else if (exp->action == ACT_REMOVE)
3422 return 0;
3423
3424 done = 0;
3425
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3426 cur_ptr = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3427 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3428
3429 /* Now we have the request line between cur_ptr and cur_end */
3430
3431 /* The annoying part is that pattern matching needs
3432 * that we modify the contents to null-terminate all
3433 * strings before testing them.
3434 */
3435
3436 term = *cur_end;
3437 *cur_end = '\0';
3438
3439 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3440 switch (exp->action) {
3441 case ACT_SETBE:
3442 /* It is not possible to jump a second time.
3443 * FIXME: should we return an HTTP/500 here so that
3444 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3445 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3446 if (t->be != t->fe)
3447 break;
3448
3449 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3450 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3451 done = 1;
3452 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3453
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3454 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3455 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3456 done = 1;
3457 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3458
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3459 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3460 txn->flags |= TX_CLDENY;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3461 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3462 done = 1;
3463 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3464
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3465 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3466 txn->flags |= TX_CLTARPIT;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3467 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3468 done = 1;
3469 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3470
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3471 case ACT_REPLACE:
3472 *cur_end = term; /* restore the string terminator */
3473 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3474 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3475 /* FIXME: if the user adds a newline in the replacement, the
3476 * index will not be recalculated for now, and the new line
3477 * will not be counted as a new header.
3478 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3479
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3480 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3481 cur_end += delta;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3482
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3483 txn->req.sol = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3484 cur_end = (char *)http_parse_reqline(&txn->req, req->data,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3485 HTTP_MSG_RQMETH,
3486 cur_ptr, cur_end + 1,
3487 NULL, NULL);
3488 if (unlikely(!cur_end))
3489 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3490
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3491 /* we have a full request and we know that we have either a CR
3492 * or an LF at <ptr>.
3493 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3494 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
3495 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]3496 /* there is no point trying this regex on headers */
3497 return 1;
3498 }
3499 }
3500 *cur_end = term; /* restore the string terminator */
3501 return done;
3502}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]3503
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3504
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3505
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3506/*
3507 * Apply all the req filters <exp> to all headers in buffer <req> of session <t>.
3508 * 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]3509 * unparsable request. Since it can manage the switch to another backend, it
3510 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3511 */
3512int apply_filters_to_request(struct session *t, struct buffer *req, struct hdr_exp *exp)
3513{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3514 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3515 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3516 while (exp && !(txn->flags & (TX_CLDENY|TX_CLTARPIT))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3517 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3518
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3519 /*
3520 * The interleaving of transformations and verdicts
3521 * makes it difficult to decide to continue or stop
3522 * the evaluation.
3523 */
3524
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3525 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3526 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
3527 exp->action == ACT_TARPIT || exp->action == ACT_PASS)) {
3528 exp = exp->next;
3529 continue;
3530 }
3531
3532 /* Apply the filter to the request line. */
3533 ret = apply_filter_to_req_line(t, req, exp);
3534 if (unlikely(ret < 0))
3535 return -1;
3536
3537 if (likely(ret == 0)) {
3538 /* The filter did not match the request, it can be
3539 * iterated through all headers.
3540 */
3541 apply_filter_to_req_headers(t, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3542 }
3543 exp = exp->next;
3544 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3545 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3546}
3547
3548
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3549
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3550/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3551 * Manage client-side cookie. It can impact performance by about 2% so it is
3552 * desirable to call it only when needed.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3553 */
3554void manage_client_side_cookies(struct session *t, struct buffer *req)
3555{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3556 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3557 char *p1, *p2, *p3, *p4;
3558 char *del_colon, *del_cookie, *colon;
3559 int app_cookies;
3560
3561 appsess *asession_temp = NULL;
3562 appsess local_asession;
3563
3564 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3565 int cur_idx, old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3566
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3567 /* Iterate through the headers.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3568 * we start with the start line.
3569 */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]3570 old_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3571 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3572
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3573 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3574 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3575 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3576
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3577 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3578 cur_ptr = cur_next;
3579 cur_end = cur_ptr + cur_hdr->len;
3580 cur_next = cur_end + cur_hdr->cr + 1;
3581
3582 /* We have one full header between cur_ptr and cur_end, and the
3583 * next header starts at cur_next. We're only interested in
3584 * "Cookie:" headers.
3585 */
3586
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3587 val = http_header_match2(cur_ptr, cur_end, "Cookie", 6);
3588 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3589 old_idx = cur_idx;
3590 continue;
3591 }
3592
3593 /* Now look for cookies. Conforming to RFC2109, we have to support
3594 * attributes whose name begin with a '$', and associate them with
3595 * the right cookie, if we want to delete this cookie.
3596 * So there are 3 cases for each cookie read :
3597 * 1) it's a special attribute, beginning with a '$' : ignore it.
3598 * 2) it's a server id cookie that we *MAY* want to delete : save
3599 * some pointers on it (last semi-colon, beginning of cookie...)
3600 * 3) it's an application cookie : we *MAY* have to delete a previous
3601 * "special" cookie.
3602 * At the end of loop, if a "special" cookie remains, we may have to
3603 * remove it. If no application cookie persists in the header, we
3604 * *MUST* delete it
3605 */
3606
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3607 colon = p1 = cur_ptr + val; /* first non-space char after 'Cookie:' */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3608
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3609 /* del_cookie == NULL => nothing to be deleted */
3610 del_colon = del_cookie = NULL;
3611 app_cookies = 0;
3612
3613 while (p1 < cur_end) {
3614 /* skip spaces and colons, but keep an eye on these ones */
3615 while (p1 < cur_end) {
3616 if (*p1 == ';' || *p1 == ',')
3617 colon = p1;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3618 else if (!isspace((unsigned char)*p1))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3619 break;
3620 p1++;
3621 }
3622
3623 if (p1 == cur_end)
3624 break;
3625
3626 /* p1 is at the beginning of the cookie name */
3627 p2 = p1;
3628 while (p2 < cur_end && *p2 != '=')
3629 p2++;
3630
3631 if (p2 == cur_end)
3632 break;
3633
3634 p3 = p2 + 1; /* skips the '=' sign */
3635 if (p3 == cur_end)
3636 break;
3637
3638 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3639 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';' && *p4 != ',')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3640 p4++;
3641
3642 /* here, we have the cookie name between p1 and p2,
3643 * and its value between p3 and p4.
3644 * we can process it :
3645 *
3646 * Cookie: NAME=VALUE;
3647 * | || || |
3648 * | || || +--> p4
3649 * | || |+-------> p3
3650 * | || +--------> p2
3651 * | |+------------> p1
3652 * | +-------------> colon
3653 * +--------------------> cur_ptr
3654 */
3655
3656 if (*p1 == '$') {
3657 /* skip this one */
3658 }
3659 else {
3660 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3661 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3662 txn->cli_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3663 (p4 - p1 >= t->fe->capture_namelen) &&
3664 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3665 int log_len = p4 - p1;
3666
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]3667 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3668 Alert("HTTP logging : out of memory.\n");
3669 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3670 if (log_len > t->fe->capture_len)
3671 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3672 memcpy(txn->cli_cookie, p1, log_len);
3673 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3674 }
3675 }
3676
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3677 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
3678 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3679 /* Cool... it's the right one */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3680 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3681 char *delim;
3682
3683 /* if we're in cookie prefix mode, we'll search the delimitor so that we
3684 * have the server ID betweek p3 and delim, and the original cookie between
3685 * delim+1 and p4. Otherwise, delim==p4 :
3686 *
3687 * Cookie: NAME=SRV~VALUE;
3688 * | || || | |
3689 * | || || | +--> p4
3690 * | || || +--------> delim
3691 * | || |+-----------> p3
3692 * | || +------------> p2
3693 * | |+----------------> p1
3694 * | +-----------------> colon
3695 * +------------------------> cur_ptr
3696 */
3697
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3698 if (t->be->options & PR_O_COOK_PFX) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3699 for (delim = p3; delim < p4; delim++)
3700 if (*delim == COOKIE_DELIM)
3701 break;
3702 }
3703 else
3704 delim = p4;
3705
3706
3707 /* Here, we'll look for the first running server which supports the cookie.
3708 * This allows to share a same cookie between several servers, for example
3709 * to dedicate backup servers to specific servers only.
3710 * However, to prevent clients from sticking to cookie-less backup server
3711 * when they have incidentely learned an empty cookie, we simply ignore
3712 * empty cookies and mark them as invalid.
3713 */
3714 if (delim == p3)
3715 srv = NULL;
3716
3717 while (srv) {
Willy Tarreau92f2ab12007-02-02 22:14:47 +0100[diff] [blame]3718 if (srv->cookie && (srv->cklen == delim - p3) &&
3719 !memcmp(p3, srv->cookie, delim - p3)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3720 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3721 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3722 txn->flags &= ~TX_CK_MASK;
3723 txn->flags |= TX_CK_VALID;
3724 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3725 t->srv = srv;
3726 break;
3727 } else {
3728 /* we found a server, but it's down */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3729 txn->flags &= ~TX_CK_MASK;
3730 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3731 }
3732 }
3733 srv = srv->next;
3734 }
3735
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3736 if (!srv && !(txn->flags & TX_CK_DOWN)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3737 /* no server matched this cookie */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3738 txn->flags &= ~TX_CK_MASK;
3739 txn->flags |= TX_CK_INVALID;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3740 }
3741
3742 /* depending on the cookie mode, we may have to either :
3743 * - delete the complete cookie if we're in insert+indirect mode, so that
3744 * the server never sees it ;
3745 * - remove the server id from the cookie value, and tag the cookie as an
3746 * application cookie so that it does not get accidentely removed later,
3747 * if we're in cookie prefix mode
3748 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3749 if ((t->be->options & PR_O_COOK_PFX) && (delim != p4)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3750 int delta; /* negative */
3751
3752 delta = buffer_replace2(req, p3, delim + 1, NULL, 0);
3753 p4 += delta;
3754 cur_end += delta;
3755 cur_next += delta;
3756 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3757 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3758
3759 del_cookie = del_colon = NULL;
3760 app_cookies++; /* protect the header from deletion */
3761 }
3762 else if (del_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3763 (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]3764 del_cookie = p1;
3765 del_colon = colon;
3766 }
3767 } else {
3768 /* now we know that we must keep this cookie since it's
3769 * not ours. But if we wanted to delete our cookie
3770 * earlier, we cannot remove the complete header, but we
3771 * can remove the previous block itself.
3772 */
3773 app_cookies++;
3774
3775 if (del_cookie != NULL) {
3776 int delta; /* negative */
3777
3778 delta = buffer_replace2(req, del_cookie, p1, NULL, 0);
3779 p4 += delta;
3780 cur_end += delta;
3781 cur_next += delta;
3782 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3783 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3784 del_cookie = del_colon = NULL;
3785 }
3786 }
3787
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3788 if ((t->be->appsession_name != NULL) &&
3789 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3790 /* first, let's see if the cookie is our appcookie*/
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3791
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3792 /* Cool... it's the right one */
3793
3794 asession_temp = &local_asession;
3795
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3796 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3797 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
3798 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
3799 return;
3800 }
3801
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3802 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
3803 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3804 asession_temp->serverid = NULL;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3805
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3806 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3807 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
3808 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3809 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3810 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3811 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3812 Alert("Not enough memory process_cli():asession:calloc().\n");
3813 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
3814 return;
3815 }
3816
3817 asession_temp->sessid = local_asession.sessid;
3818 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3819 asession_temp->request_count = 0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3820 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3821 } else {
3822 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3823 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3824 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3825 if (asession_temp->serverid == NULL) {
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3826 /* TODO redispatch request */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3827 Alert("Found Application Session without matching server.\n");
3828 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3829 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3830 while (srv) {
3831 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3832 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3833 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3834 txn->flags &= ~TX_CK_MASK;
3835 txn->flags |= TX_CK_VALID;
3836 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3837 t->srv = srv;
3838 break;
3839 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3840 txn->flags &= ~TX_CK_MASK;
3841 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3842 }
3843 }
3844 srv = srv->next;
3845 }/* end while(srv) */
3846 }/* end else if server == NULL */
3847
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]3848 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3849 asession_temp->request_count++;
3850#if defined(DEBUG_HASH)
3851 Alert("manage_client_side_cookies\n");
3852 appsession_hash_dump(&(t->be->htbl_proxy));
3853#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3854 }/* end if ((t->proxy->appsession_name != NULL) ... */
3855 }
3856
3857 /* we'll have to look for another cookie ... */
3858 p1 = p4;
3859 } /* while (p1 < cur_end) */
3860
3861 /* There's no more cookie on this line.
3862 * We may have marked the last one(s) for deletion.
3863 * We must do this now in two ways :
3864 * - if there is no app cookie, we simply delete the header ;
3865 * - if there are app cookies, we must delete the end of the
3866 * string properly, including the colon/semi-colon before
3867 * the cookie name.
3868 */
3869 if (del_cookie != NULL) {
3870 int delta;
3871 if (app_cookies) {
3872 delta = buffer_replace2(req, del_colon, cur_end, NULL, 0);
3873 cur_end = del_colon;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3874 cur_hdr->len += delta;
3875 } else {
3876 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3877
3878 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3879 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3880 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3881 cur_hdr->len = 0;
3882 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]3883 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3884 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3885 }
3886
3887 /* keep the link from this header to next one */
3888 old_idx = cur_idx;
3889 } /* end of cookie processing on this header */
3890}
3891
3892
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3893/* Iterate the same filter through all response headers contained in <rtr>.
3894 * Returns 1 if this filter can be stopped upon return, otherwise 0.
3895 */
3896int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
3897{
3898 char term;
3899 char *cur_ptr, *cur_end, *cur_next;
3900 int cur_idx, old_idx, last_hdr;
3901 struct http_txn *txn = &t->txn;
3902 struct hdr_idx_elem *cur_hdr;
3903 int len, delta;
3904
3905 last_hdr = 0;
3906
3907 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
3908 old_idx = 0;
3909
3910 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3911 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3912 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3913 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3914 (exp->action == ACT_ALLOW ||
3915 exp->action == ACT_DENY))
3916 return 0;
3917
3918 cur_idx = txn->hdr_idx.v[old_idx].next;
3919 if (!cur_idx)
3920 break;
3921
3922 cur_hdr = &txn->hdr_idx.v[cur_idx];
3923 cur_ptr = cur_next;
3924 cur_end = cur_ptr + cur_hdr->len;
3925 cur_next = cur_end + cur_hdr->cr + 1;
3926
3927 /* Now we have one header between cur_ptr and cur_end,
3928 * and the next header starts at cur_next.
3929 */
3930
3931 /* The annoying part is that pattern matching needs
3932 * that we modify the contents to null-terminate all
3933 * strings before testing them.
3934 */
3935
3936 term = *cur_end;
3937 *cur_end = '\0';
3938
3939 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3940 switch (exp->action) {
3941 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3942 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3943 last_hdr = 1;
3944 break;
3945
3946 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3947 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3948 last_hdr = 1;
3949 break;
3950
3951 case ACT_REPLACE:
3952 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3953 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
3954 /* FIXME: if the user adds a newline in the replacement, the
3955 * index will not be recalculated for now, and the new line
3956 * will not be counted as a new header.
3957 */
3958
3959 cur_end += delta;
3960 cur_next += delta;
3961 cur_hdr->len += delta;
3962 txn->rsp.eoh += delta;
3963 break;
3964
3965 case ACT_REMOVE:
3966 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
3967 cur_next += delta;
3968
3969 /* FIXME: this should be a separate function */
3970 txn->rsp.eoh += delta;
3971 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3972 txn->hdr_idx.used--;
3973 cur_hdr->len = 0;
3974 cur_end = NULL; /* null-term has been rewritten */
3975 break;
3976
3977 }
3978 }
3979 if (cur_end)
3980 *cur_end = term; /* restore the string terminator */
3981
3982 /* keep the link from this header to next one in case of later
3983 * removal of next header.
3984 */
3985 old_idx = cur_idx;
3986 }
3987 return 0;
3988}
3989
3990
3991/* Apply the filter to the status line in the response buffer <rtr>.
3992 * Returns 0 if nothing has been done, 1 if the filter has been applied,
3993 * or -1 if a replacement resulted in an invalid status line.
3994 */
3995int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
3996{
3997 char term;
3998 char *cur_ptr, *cur_end;
3999 int done;
4000 struct http_txn *txn = &t->txn;
4001 int len, delta;
4002
4003
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4004 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4005 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4006 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4007 (exp->action == ACT_ALLOW ||
4008 exp->action == ACT_DENY))
4009 return 0;
4010 else if (exp->action == ACT_REMOVE)
4011 return 0;
4012
4013 done = 0;
4014
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4015 cur_ptr = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4016 cur_end = cur_ptr + txn->rsp.sl.rq.l;
4017
4018 /* Now we have the status line between cur_ptr and cur_end */
4019
4020 /* The annoying part is that pattern matching needs
4021 * that we modify the contents to null-terminate all
4022 * strings before testing them.
4023 */
4024
4025 term = *cur_end;
4026 *cur_end = '\0';
4027
4028 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4029 switch (exp->action) {
4030 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4031 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4032 done = 1;
4033 break;
4034
4035 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4036 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4037 done = 1;
4038 break;
4039
4040 case ACT_REPLACE:
4041 *cur_end = term; /* restore the string terminator */
4042 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4043 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4044 /* FIXME: if the user adds a newline in the replacement, the
4045 * index will not be recalculated for now, and the new line
4046 * will not be counted as a new header.
4047 */
4048
4049 txn->rsp.eoh += delta;
4050 cur_end += delta;
4051
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4052 txn->rsp.sol = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4053 cur_end = (char *)http_parse_stsline(&txn->rsp, rtr->data,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]4054 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4055 cur_ptr, cur_end + 1,
4056 NULL, NULL);
4057 if (unlikely(!cur_end))
4058 return -1;
4059
4060 /* we have a full respnse and we know that we have either a CR
4061 * or an LF at <ptr>.
4062 */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4063 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]4064 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.rq.l, *cur_end == '\r');
4065 /* there is no point trying this regex on headers */
4066 return 1;
4067 }
4068 }
4069 *cur_end = term; /* restore the string terminator */
4070 return done;
4071}
4072
4073
4074
4075/*
4076 * Apply all the resp filters <exp> to all headers in buffer <rtr> of session <t>.
4077 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
4078 * unparsable response.
4079 */
4080int apply_filters_to_response(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4081{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4082 struct http_txn *txn = &t->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4083 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4084 while (exp && !(txn->flags & TX_SVDENY)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4085 int ret;
4086
4087 /*
4088 * The interleaving of transformations and verdicts
4089 * makes it difficult to decide to continue or stop
4090 * the evaluation.
4091 */
4092
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4093 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4094 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4095 exp->action == ACT_PASS)) {
4096 exp = exp->next;
4097 continue;
4098 }
4099
4100 /* Apply the filter to the status line. */
4101 ret = apply_filter_to_sts_line(t, rtr, exp);
4102 if (unlikely(ret < 0))
4103 return -1;
4104
4105 if (likely(ret == 0)) {
4106 /* The filter did not match the response, it can be
4107 * iterated through all headers.
4108 */
4109 apply_filter_to_resp_headers(t, rtr, exp);
4110 }
4111 exp = exp->next;
4112 }
4113 return 0;
4114}
4115
4116
4117
4118/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]4119 * Manage server-side cookies. It can impact performance by about 2% so it is
4120 * desirable to call it only when needed.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4121 */
4122void manage_server_side_cookies(struct session *t, struct buffer *rtr)
4123{
4124 struct http_txn *txn = &t->txn;
4125 char *p1, *p2, *p3, *p4;
4126
4127 appsess *asession_temp = NULL;
4128 appsess local_asession;
4129
4130 char *cur_ptr, *cur_end, *cur_next;
4131 int cur_idx, old_idx, delta;
4132
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4133 /* Iterate through the headers.
4134 * we start with the start line.
4135 */
4136 old_idx = 0;
4137 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4138
4139 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
4140 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4141 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4142
4143 cur_hdr = &txn->hdr_idx.v[cur_idx];
4144 cur_ptr = cur_next;
4145 cur_end = cur_ptr + cur_hdr->len;
4146 cur_next = cur_end + cur_hdr->cr + 1;
4147
4148 /* We have one full header between cur_ptr and cur_end, and the
4149 * next header starts at cur_next. We're only interested in
4150 * "Cookie:" headers.
4151 */
4152
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4153 val = http_header_match2(cur_ptr, cur_end, "Set-Cookie", 10);
4154 if (!val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4155 old_idx = cur_idx;
4156 continue;
4157 }
4158
4159 /* OK, right now we know we have a set-cookie at cur_ptr */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4160 txn->flags |= TX_SCK_ANY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4161
4162
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4163 /* maybe we only wanted to see if there was a set-cookie. Note that
4164 * the cookie capture is declared in the fronend.
4165 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4166 if (t->be->cookie_name == NULL &&
4167 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4168 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4169 return;
4170
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4171 p1 = cur_ptr + val; /* first non-space char after 'Set-Cookie:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4172
4173 while (p1 < cur_end) { /* in fact, we'll break after the first cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4174 if (p1 == cur_end || *p1 == ';') /* end of cookie */
4175 break;
4176
4177 /* p1 is at the beginning of the cookie name */
4178 p2 = p1;
4179
4180 while (p2 < cur_end && *p2 != '=' && *p2 != ';')
4181 p2++;
4182
4183 if (p2 == cur_end || *p2 == ';') /* next cookie */
4184 break;
4185
4186 p3 = p2 + 1; /* skip the '=' sign */
4187 if (p3 == cur_end)
4188 break;
4189
4190 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4191 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';')
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4192 p4++;
4193
4194 /* here, we have the cookie name between p1 and p2,
4195 * and its value between p3 and p4.
4196 * we can process it.
4197 */
4198
4199 /* first, let's see if we want to capture it */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4200 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4201 txn->srv_cookie == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4202 (p4 - p1 >= t->fe->capture_namelen) &&
4203 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4204 int log_len = p4 - p1;
4205
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]4206 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4207 Alert("HTTP logging : out of memory.\n");
4208 }
4209
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4210 if (log_len > t->fe->capture_len)
4211 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4212 memcpy(txn->srv_cookie, p1, log_len);
4213 txn->srv_cookie[log_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4214 }
4215
4216 /* now check if we need to process it for persistence */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4217 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4218 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4219 /* Cool... it's the right one */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4220 txn->flags |= TX_SCK_SEEN;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4221
4222 /* If the cookie is in insert mode on a known server, we'll delete
4223 * this occurrence because we'll insert another one later.
4224 * We'll delete it too if the "indirect" option is set and we're in
4225 * a direct access. */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4226 if (((t->srv) && (t->be->options & PR_O_COOK_INS)) ||
4227 ((t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_IND))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4228 /* this header must be deleted */
4229 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4230 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4231 txn->hdr_idx.used--;
4232 cur_hdr->len = 0;
4233 cur_next += delta;
4234 txn->rsp.eoh += delta;
4235
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4236 txn->flags |= TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4237 }
4238 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4239 (t->be->options & PR_O_COOK_RW)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4240 /* replace bytes p3->p4 with the cookie name associated
4241 * with this server since we know it.
4242 */
4243 delta = buffer_replace2(rtr, p3, p4, t->srv->cookie, t->srv->cklen);
4244 cur_hdr->len += delta;
4245 cur_next += delta;
4246 txn->rsp.eoh += delta;
4247
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4248 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4249 }
4250 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4251 (t->be->options & PR_O_COOK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4252 /* insert the cookie name associated with this server
4253 * before existing cookie, and insert a delimitor between them..
4254 */
4255 delta = buffer_replace2(rtr, p3, p3, t->srv->cookie, t->srv->cklen + 1);
4256 cur_hdr->len += delta;
4257 cur_next += delta;
4258 txn->rsp.eoh += delta;
4259
4260 p3[t->srv->cklen] = COOKIE_DELIM;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4261 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4262 }
4263 }
4264 /* next, let's see if the cookie is our appcookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4265 else if ((t->be->appsession_name != NULL) &&
4266 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4267
4268 /* Cool... it's the right one */
4269
4270 size_t server_id_len = strlen(t->srv->id) + 1;
4271 asession_temp = &local_asession;
4272
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4273 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4274 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4275 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4276 return;
4277 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4278 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4279 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4280 asession_temp->serverid = NULL;
4281
4282 /* only do insert, if lookup fails */
Ryan Warnick6d0b1fa2008-02-17 11:24:35 +0100[diff] [blame]4283 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
4284 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4285 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4286 Alert("Not enough Memory process_srv():asession:calloc().\n");
4287 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
4288 return;
4289 }
4290 asession_temp->sessid = local_asession.sessid;
4291 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4292 asession_temp->request_count = 0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4293 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
4294 } else {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4295 /* free wasted memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4296 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4297 }
4298
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4299 if (asession_temp->serverid == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4300 if ((asession_temp->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4301 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4302 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4303 return;
4304 }
4305 asession_temp->serverid[0] = '\0';
4306 }
4307
4308 if (asession_temp->serverid[0] == '\0')
4309 memcpy(asession_temp->serverid, t->srv->id, server_id_len);
4310
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]4311 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4312 asession_temp->request_count++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4313#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4314 Alert("manage_server_side_cookies\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4315 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4316#endif
4317 }/* end if ((t->proxy->appsession_name != NULL) ... */
4318 break; /* we don't want to loop again since there cannot be another cookie on the same line */
4319 } /* we're now at the end of the cookie value */
4320
4321 /* keep the link from this header to next one */
4322 old_idx = cur_idx;
4323 } /* end of cookie processing on this header */
4324}
4325
4326
4327
4328/*
4329 * Check if response is cacheable or not. Updates t->flags.
4330 */
4331void check_response_for_cacheability(struct session *t, struct buffer *rtr)
4332{
4333 struct http_txn *txn = &t->txn;
4334 char *p1, *p2;
4335
4336 char *cur_ptr, *cur_end, *cur_next;
4337 int cur_idx;
4338
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]4339 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4340 return;
4341
4342 /* Iterate through the headers.
4343 * we start with the start line.
4344 */
4345 cur_idx = 0;
4346 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4347
4348 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4349 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4350 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4351
4352 cur_hdr = &txn->hdr_idx.v[cur_idx];
4353 cur_ptr = cur_next;
4354 cur_end = cur_ptr + cur_hdr->len;
4355 cur_next = cur_end + cur_hdr->cr + 1;
4356
4357 /* We have one full header between cur_ptr and cur_end, and the
4358 * next header starts at cur_next. We're only interested in
4359 * "Cookie:" headers.
4360 */
4361
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4362 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
4363 if (val) {
4364 if ((cur_end - (cur_ptr + val) >= 8) &&
4365 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
4366 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
4367 return;
4368 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4369 }
4370
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4371 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
4372 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4373 continue;
4374
4375 /* OK, right now we know we have a cache-control header at cur_ptr */
4376
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4377 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4378
4379 if (p1 >= cur_end) /* no more info */
4380 continue;
4381
4382 /* p1 is at the beginning of the value */
4383 p2 = p1;
4384
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4385 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4386 p2++;
4387
4388 /* we have a complete value between p1 and p2 */
4389 if (p2 < cur_end && *p2 == '=') {
4390 /* we have something of the form no-cache="set-cookie" */
4391 if ((cur_end - p1 >= 21) &&
4392 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
4393 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4394 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4395 continue;
4396 }
4397
4398 /* OK, so we know that either p2 points to the end of string or to a comma */
4399 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
4400 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
4401 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
4402 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4403 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4404 return;
4405 }
4406
4407 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4408 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4409 continue;
4410 }
4411 }
4412}
4413
4414
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4415/*
4416 * Try to retrieve a known appsession in the URI, then the associated server.
4417 * If the server is found, it's assigned to the session.
4418 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4419void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4420{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4421 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4422 appsess *asession_temp = NULL;
4423 appsess local_asession;
4424 char *request_line;
4425
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4426 if (t->be->appsession_name == NULL ||
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]4427 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST) ||
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4428 (request_line = memchr(begin, ';', len)) == NULL ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4429 ((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]4430 return;
4431
4432 /* skip ';' */
4433 request_line++;
4434
4435 /* look if we have a jsessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4436 if (strncasecmp(request_line, t->be->appsession_name, t->be->appsession_name_len) != 0)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4437 return;
4438
4439 /* skip jsessionid= */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4440 request_line += t->be->appsession_name_len + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4441
4442 /* First try if we already have an appsession */
4443 asession_temp = &local_asession;
4444
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4445 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4446 Alert("Not enough memory process_cli():asession_temp->sessid:calloc().\n");
4447 send_log(t->be, LOG_ALERT, "Not enough Memory process_cli():asession_temp->sessid:calloc().\n");
4448 return;
4449 }
4450
4451 /* Copy the sessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4452 memcpy(asession_temp->sessid, request_line, t->be->appsession_len);
4453 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4454 asession_temp->serverid = NULL;
4455
4456 /* only do insert, if lookup fails */
Ryan Warnick6d0b1fa2008-02-17 11:24:35 +0100[diff] [blame]4457 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
4458 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4459 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4460 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4461 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4462 Alert("Not enough memory process_cli():asession:calloc().\n");
4463 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4464 return;
4465 }
4466 asession_temp->sessid = local_asession.sessid;
4467 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4468 asession_temp->request_count=0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4469 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4470 }
4471 else {
4472 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4473 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4474 }
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4475
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]4476 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4477 asession_temp->request_count++;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4478
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4479#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4480 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4481 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4482#endif
4483 if (asession_temp->serverid == NULL) {
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4484 /* TODO redispatch request */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4485 Alert("Found Application Session without matching server.\n");
4486 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4487 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4488 while (srv) {
4489 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4490 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4491 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4492 txn->flags &= ~TX_CK_MASK;
4493 txn->flags |= TX_CK_VALID;
4494 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4495 t->srv = srv;
4496 break;
4497 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4498 txn->flags &= ~TX_CK_MASK;
4499 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4500 }
4501 }
4502 srv = srv->next;
4503 }
4504 }
4505}
4506
4507
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4508/*
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4509 * In a GET or HEAD request, check if the requested URI matches the stats uri
4510 * for the current backend, and if an authorization has been passed and is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4511 *
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4512 * 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]4513 * 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]4514 * produce_content() can be called to start sending data.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4515 *
4516 * Returns 1 if the session's state changes, otherwise 0.
4517 */
4518int stats_check_uri_auth(struct session *t, struct proxy *backend)
4519{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4520 struct http_txn *txn = &t->txn;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4521 struct uri_auth *uri_auth = backend->uri_auth;
4522 struct user_auth *user;
4523 int authenticated, cur_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4524 char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4525
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4526 memset(&t->data_ctx.stats, 0, sizeof(t->data_ctx.stats));
4527
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4528 /* check URI size */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4529 if (uri_auth->uri_len > txn->req.sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4530 return 0;
4531
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4532 h = t->req->data + txn->req.sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4533
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4534 /* the URI is in h */
4535 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4536 return 0;
4537
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4538 h += uri_auth->uri_len;
4539 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 3) {
4540 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4541 t->data_ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4542 break;
4543 }
4544 h++;
4545 }
4546
4547 if (uri_auth->refresh) {
4548 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4549 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 10) {
4550 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4551 t->data_ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4552 break;
4553 }
4554 h++;
4555 }
4556 }
4557
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]4558 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4559 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 4) {
4560 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4561 t->data_ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]4562 break;
4563 }
4564 h++;
4565 }
4566
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4567 t->data_ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
4568
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4569 /* we are in front of a interceptable URI. Let's check
4570 * if there's an authentication and if it's valid.
4571 */
4572 user = uri_auth->users;
4573 if (!user) {
4574 /* no user auth required, it's OK */
4575 authenticated = 1;
4576 } else {
4577 authenticated = 0;
4578
4579 /* a user list is defined, we have to check.
4580 * skip 21 chars for "Authorization: Basic ".
4581 */
4582
4583 /* FIXME: this should move to an earlier place */
4584 cur_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4585 h = t->req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
4586 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4587 int len = txn->hdr_idx.v[cur_idx].len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4588 if (len > 14 &&
4589 !strncasecmp("Authorization:", h, 14)) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4590 txn->auth_hdr.str = h;
4591 txn->auth_hdr.len = len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4592 break;
4593 }
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4594 h += len + txn->hdr_idx.v[cur_idx].cr + 1;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4595 }
4596
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4597 if (txn->auth_hdr.len < 21 ||
4598 memcmp(txn->auth_hdr.str + 14, " Basic ", 7))
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4599 user = NULL;
4600
4601 while (user) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4602 if ((txn->auth_hdr.len == user->user_len + 14 + 7)
4603 && !memcmp(txn->auth_hdr.str + 14 + 7,
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4604 user->user_pwd, user->user_len)) {
4605 authenticated = 1;
4606 break;
4607 }
4608 user = user->next;
4609 }
4610 }
4611
4612 if (!authenticated) {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4613 struct chunk msg;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4614
4615 /* no need to go further */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4616 msg.str = trash;
4617 msg.len = sprintf(trash, HTTP_401_fmt, uri_auth->auth_realm);
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4618 txn->status = 401;
Willy Tarreaudded32d2008-11-30 19:48:07 +0100[diff] [blame]4619 stream_int_retnclose(t->req->prod, &msg);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]4620 t->req->analysers = 0;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4621 if (!(t->flags & SN_ERR_MASK))
4622 t->flags |= SN_ERR_PRXCOND;
4623 if (!(t->flags & SN_FINST_MASK))
4624 t->flags |= SN_FINST_R;
4625 return 1;
4626 }
4627
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4628 /* The request is valid, the user is authenticated. Let's start sending
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4629 * data.
4630 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]4631 buffer_dont_connect(t->req);
Willy Tarreau72b179a2008-08-28 16:01:32 +0200[diff] [blame]4632 buffer_shutw_now(t->req);
4633 buffer_shutr_now(t->rep);
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]4634 t->logs.tv_request = now;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4635 t->data_source = DATA_SRC_STATS;
4636 t->data_state = DATA_ST_INIT;
Willy Tarreau91e99932008-06-30 07:51:00 +0200[diff] [blame]4637 t->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]4638 buffer_install_hijacker(t, t->rep, produce_content);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4639 return 1;
4640}
4641
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4642/*
4643 * Capture a bad request or response and archive it in the proxy's structure.
4644 */
4645void http_capture_bad_message(struct error_snapshot *es, struct session *s,
4646 struct buffer *buf, struct http_msg *msg,
4647 struct proxy *other_end)
4648{
Willy Tarreau2df8d712009-05-01 11:33:17 +0200[diff] [blame]4649 es->len = buf->r - (buf->data + msg->som);
4650 memcpy(es->buf, buf->data + msg->som, MIN(es->len, sizeof(es->buf)));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4651 if (msg->err_pos >= 0)
Willy Tarreau2df8d712009-05-01 11:33:17 +0200[diff] [blame]4652 es->pos = msg->err_pos - msg->som;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4653 else
Willy Tarreau2df8d712009-05-01 11:33:17 +0200[diff] [blame]4654 es->pos = buf->lr - (buf->data + msg->som);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4655 es->when = date; // user-visible date
4656 es->sid = s->uniq_id;
4657 es->srv = s->srv;
4658 es->oe = other_end;
4659 es->src = s->cli_addr;
4660}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4661
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4662/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4663 * Print a debug line with a header
4664 */
4665void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
4666{
4667 int len, max;
4668 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4669 dir, (unsigned short)t->req->prod->fd, (unsigned short)t->req->cons->fd);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4670 max = end - start;
4671 UBOUND(max, sizeof(trash) - len - 1);
4672 len += strlcpy2(trash + len, start, max + 1);
4673 trash[len++] = '\n';
4674 write(1, trash, len);
4675}
4676
4677
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4678/************************************************************************/
4679/* The code below is dedicated to ACL parsing and matching */
4680/************************************************************************/
4681
4682
4683
4684
4685/* 1. Check on METHOD
4686 * We use the pre-parsed method if it is known, and store its number as an
4687 * integer. If it is unknown, we use the pointer and the length.
4688 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4689static int acl_parse_meth(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4690{
4691 int len, meth;
4692
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4693 len = strlen(*text);
4694 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4695
4696 pattern->val.i = meth;
4697 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4698 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4699 if (!pattern->ptr.str)
4700 return 0;
4701 pattern->len = len;
4702 }
4703 return 1;
4704}
4705
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4706static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4707acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, int dir,
4708 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4709{
4710 int meth;
4711 struct http_txn *txn = l7;
4712
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4713 if (!txn)
4714 return 0;
4715
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4716 if (txn->req.msg_state != HTTP_MSG_BODY)
4717 return 0;
4718
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4719 meth = txn->meth;
4720 test->i = meth;
4721 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4722 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4723 /* ensure the indexes are not affected */
4724 return 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4725 test->len = txn->req.sl.rq.m_l;
4726 test->ptr = txn->req.sol;
4727 }
4728 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4729 return 1;
4730}
4731
4732static int acl_match_meth(struct acl_test *test, struct acl_pattern *pattern)
4733{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4734 int icase;
4735
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4736 if (test->i != pattern->val.i)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4737 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4738
4739 if (test->i != HTTP_METH_OTHER)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4740 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4741
4742 /* Other method, we must compare the strings */
4743 if (pattern->len != test->len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4744 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4745
4746 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
4747 if ((icase && strncasecmp(pattern->ptr.str, test->ptr, test->len) != 0) ||
4748 (!icase && strncmp(pattern->ptr.str, test->ptr, test->len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4749 return ACL_PAT_FAIL;
4750 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4751}
4752
4753/* 2. Check on Request/Status Version
4754 * We simply compare strings here.
4755 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4756static int acl_parse_ver(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4757{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4758 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4759 if (!pattern->ptr.str)
4760 return 0;
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4761 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4762 return 1;
4763}
4764
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4765static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4766acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, int dir,
4767 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4768{
4769 struct http_txn *txn = l7;
4770 char *ptr;
4771 int len;
4772
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4773 if (!txn)
4774 return 0;
4775
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4776 if (txn->req.msg_state != HTTP_MSG_BODY)
4777 return 0;
4778
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4779 len = txn->req.sl.rq.v_l;
4780 ptr = txn->req.sol + txn->req.sl.rq.v - txn->req.som;
4781
4782 while ((len-- > 0) && (*ptr++ != '/'));
4783 if (len <= 0)
4784 return 0;
4785
4786 test->ptr = ptr;
4787 test->len = len;
4788
4789 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4790 return 1;
4791}
4792
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4793static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4794acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, int dir,
4795 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4796{
4797 struct http_txn *txn = l7;
4798 char *ptr;
4799 int len;
4800
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4801 if (!txn)
4802 return 0;
4803
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4804 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4805 return 0;
4806
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4807 len = txn->rsp.sl.st.v_l;
4808 ptr = txn->rsp.sol;
4809
4810 while ((len-- > 0) && (*ptr++ != '/'));
4811 if (len <= 0)
4812 return 0;
4813
4814 test->ptr = ptr;
4815 test->len = len;
4816
4817 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4818 return 1;
4819}
4820
4821/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4822static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4823acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, int dir,
4824 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4825{
4826 struct http_txn *txn = l7;
4827 char *ptr;
4828 int len;
4829
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4830 if (!txn)
4831 return 0;
4832
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4833 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4834 return 0;
4835
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4836 len = txn->rsp.sl.st.c_l;
4837 ptr = txn->rsp.sol + txn->rsp.sl.st.c - txn->rsp.som;
4838
4839 test->i = __strl2ui(ptr, len);
4840 test->flags = ACL_TEST_F_VOL_1ST;
4841 return 1;
4842}
4843
4844/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4845static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4846acl_fetch_url(struct proxy *px, struct session *l4, void *l7, int dir,
4847 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4848{
4849 struct http_txn *txn = l7;
4850
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4851 if (!txn)
4852 return 0;
4853
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4854 if (txn->req.msg_state != HTTP_MSG_BODY)
4855 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4856
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4857 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4858 /* ensure the indexes are not affected */
4859 return 0;
4860
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4861 test->len = txn->req.sl.rq.u_l;
4862 test->ptr = txn->req.sol + txn->req.sl.rq.u;
4863
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]4864 /* we do not need to set READ_ONLY because the data is in a buffer */
4865 test->flags = ACL_TEST_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4866 return 1;
4867}
4868
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4869static int
4870acl_fetch_url_ip(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
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4878 if (txn->req.msg_state != HTTP_MSG_BODY)
4879 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4880
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4881 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4882 /* ensure the indexes are not affected */
4883 return 0;
4884
4885 /* Parse HTTP request */
4886 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
4887 test->ptr = (void *)&((struct sockaddr_in *)&l4->srv_addr)->sin_addr;
4888 test->i = AF_INET;
4889
4890 /*
4891 * If we are parsing url in frontend space, we prepare backend stage
4892 * to not parse again the same url ! optimization lazyness...
4893 */
4894 if (px->options & PR_O_HTTP_PROXY)
4895 l4->flags |= SN_ADDR_SET;
4896
4897 test->flags = ACL_TEST_F_READ_ONLY;
4898 return 1;
4899}
4900
4901static int
4902acl_fetch_url_port(struct proxy *px, struct session *l4, void *l7, int dir,
4903 struct acl_expr *expr, struct acl_test *test)
4904{
4905 struct http_txn *txn = l7;
4906
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4907 if (!txn)
4908 return 0;
4909
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4910 if (txn->req.msg_state != HTTP_MSG_BODY)
4911 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4912
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4913 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4914 /* ensure the indexes are not affected */
4915 return 0;
4916
4917 /* Same optimization as url_ip */
4918 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
4919 test->i = ntohs(((struct sockaddr_in *)&l4->srv_addr)->sin_port);
4920
4921 if (px->options & PR_O_HTTP_PROXY)
4922 l4->flags |= SN_ADDR_SET;
4923
4924 test->flags = ACL_TEST_F_READ_ONLY;
4925 return 1;
4926}
4927
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4928/* 5. Check on HTTP header. A pointer to the beginning of the value is returned.
4929 * This generic function is used by both acl_fetch_chdr() and acl_fetch_shdr().
4930 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4931static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4932acl_fetch_hdr(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4933 struct acl_expr *expr, struct acl_test *test)
4934{
4935 struct http_txn *txn = l7;
4936 struct hdr_idx *idx = &txn->hdr_idx;
4937 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4938
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4939 if (!txn)
4940 return 0;
4941
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4942 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
4943 /* search for header from the beginning */
4944 ctx->idx = 0;
4945
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4946 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
4947 test->flags |= ACL_TEST_F_FETCH_MORE;
4948 test->flags |= ACL_TEST_F_VOL_HDR;
4949 test->len = ctx->vlen;
4950 test->ptr = (char *)ctx->line + ctx->val;
4951 return 1;
4952 }
4953
4954 test->flags &= ~ACL_TEST_F_FETCH_MORE;
4955 test->flags |= ACL_TEST_F_VOL_HDR;
4956 return 0;
4957}
4958
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4959static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4960acl_fetch_chdr(struct proxy *px, struct session *l4, void *l7, int dir,
4961 struct acl_expr *expr, struct acl_test *test)
4962{
4963 struct http_txn *txn = l7;
4964
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4965 if (!txn)
4966 return 0;
4967
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4968 if (txn->req.msg_state != HTTP_MSG_BODY)
4969 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4970
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4971 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4972 /* ensure the indexes are not affected */
4973 return 0;
4974
4975 return acl_fetch_hdr(px, l4, txn, txn->req.sol, expr, test);
4976}
4977
4978static int
4979acl_fetch_shdr(struct proxy *px, struct session *l4, void *l7, int dir,
4980 struct acl_expr *expr, struct acl_test *test)
4981{
4982 struct http_txn *txn = l7;
4983
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4984 if (!txn)
4985 return 0;
4986
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4987 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4988 return 0;
4989
4990 return acl_fetch_hdr(px, l4, txn, txn->rsp.sol, expr, test);
4991}
4992
4993/* 6. Check on HTTP header count. The number of occurrences is returned.
4994 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
4995 */
4996static int
4997acl_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4998 struct acl_expr *expr, struct acl_test *test)
4999{
5000 struct http_txn *txn = l7;
5001 struct hdr_idx *idx = &txn->hdr_idx;
5002 struct hdr_ctx ctx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5003 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5004
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5005 if (!txn)
5006 return 0;
5007
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5008 ctx.idx = 0;
5009 cnt = 0;
5010 while (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, &ctx))
5011 cnt++;
5012
5013 test->i = cnt;
5014 test->flags = ACL_TEST_F_VOL_HDR;
5015 return 1;
5016}
5017
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5018static int
5019acl_fetch_chdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5020 struct acl_expr *expr, struct acl_test *test)
5021{
5022 struct http_txn *txn = l7;
5023
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5024 if (!txn)
5025 return 0;
5026
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5027 if (txn->req.msg_state != HTTP_MSG_BODY)
5028 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5029
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5030 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5031 /* ensure the indexes are not affected */
5032 return 0;
5033
5034 return acl_fetch_hdr_cnt(px, l4, txn, txn->req.sol, expr, test);
5035}
5036
5037static int
5038acl_fetch_shdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5039 struct acl_expr *expr, struct acl_test *test)
5040{
5041 struct http_txn *txn = l7;
5042
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5043 if (!txn)
5044 return 0;
5045
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5046 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5047 return 0;
5048
5049 return acl_fetch_hdr_cnt(px, l4, txn, txn->rsp.sol, expr, test);
5050}
5051
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5052/* 7. Check on HTTP header's integer value. The integer value is returned.
5053 * FIXME: the type is 'int', it may not be appropriate for everything.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5054 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5055 */
5056static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5057acl_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5058 struct acl_expr *expr, struct acl_test *test)
5059{
5060 struct http_txn *txn = l7;
5061 struct hdr_idx *idx = &txn->hdr_idx;
5062 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5063
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5064 if (!txn)
5065 return 0;
5066
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5067 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5068 /* search for header from the beginning */
5069 ctx->idx = 0;
5070
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5071 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5072 test->flags |= ACL_TEST_F_FETCH_MORE;
5073 test->flags |= ACL_TEST_F_VOL_HDR;
5074 test->i = strl2ic((char *)ctx->line + ctx->val, ctx->vlen);
5075 return 1;
5076 }
5077
5078 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5079 test->flags |= ACL_TEST_F_VOL_HDR;
5080 return 0;
5081}
5082
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5083static int
5084acl_fetch_chdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5085 struct acl_expr *expr, struct acl_test *test)
5086{
5087 struct http_txn *txn = l7;
5088
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5089 if (!txn)
5090 return 0;
5091
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5092 if (txn->req.msg_state != HTTP_MSG_BODY)
5093 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5094
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5095 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5096 /* ensure the indexes are not affected */
5097 return 0;
5098
5099 return acl_fetch_hdr_val(px, l4, txn, txn->req.sol, expr, test);
5100}
5101
5102static int
5103acl_fetch_shdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5104 struct acl_expr *expr, struct acl_test *test)
5105{
5106 struct http_txn *txn = l7;
5107
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5108 if (!txn)
5109 return 0;
5110
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5111 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5112 return 0;
5113
5114 return acl_fetch_hdr_val(px, l4, txn, txn->rsp.sol, expr, test);
5115}
5116
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]5117/* 7. Check on HTTP header's IPv4 address value. The IPv4 address is returned.
5118 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
5119 */
5120static int
5121acl_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, char *sol,
5122 struct acl_expr *expr, struct acl_test *test)
5123{
5124 struct http_txn *txn = l7;
5125 struct hdr_idx *idx = &txn->hdr_idx;
5126 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
5127
5128 if (!txn)
5129 return 0;
5130
5131 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5132 /* search for header from the beginning */
5133 ctx->idx = 0;
5134
5135 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5136 test->flags |= ACL_TEST_F_FETCH_MORE;
5137 test->flags |= ACL_TEST_F_VOL_HDR;
5138 /* Same optimization as url_ip */
5139 memset(&l4->srv_addr.sin_addr, 0, sizeof(l4->srv_addr.sin_addr));
5140 url2ip((char *)ctx->line + ctx->val, &l4->srv_addr.sin_addr);
5141 test->ptr = (void *)&l4->srv_addr.sin_addr;
5142 test->i = AF_INET;
5143 return 1;
5144 }
5145
5146 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5147 test->flags |= ACL_TEST_F_VOL_HDR;
5148 return 0;
5149}
5150
5151static int
5152acl_fetch_chdr_ip(struct proxy *px, struct session *l4, void *l7, int dir,
5153 struct acl_expr *expr, struct acl_test *test)
5154{
5155 struct http_txn *txn = l7;
5156
5157 if (!txn)
5158 return 0;
5159
5160 if (txn->req.msg_state != HTTP_MSG_BODY)
5161 return 0;
5162
5163 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5164 /* ensure the indexes are not affected */
5165 return 0;
5166
5167 return acl_fetch_hdr_ip(px, l4, txn, txn->req.sol, expr, test);
5168}
5169
5170static int
5171acl_fetch_shdr_ip(struct proxy *px, struct session *l4, void *l7, int dir,
5172 struct acl_expr *expr, struct acl_test *test)
5173{
5174 struct http_txn *txn = l7;
5175
5176 if (!txn)
5177 return 0;
5178
5179 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5180 return 0;
5181
5182 return acl_fetch_hdr_ip(px, l4, txn, txn->rsp.sol, expr, test);
5183}
5184
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5185/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
5186 * the first '/' after the possible hostname, and ends before the possible '?'.
5187 */
5188static int
5189acl_fetch_path(struct proxy *px, struct session *l4, void *l7, int dir,
5190 struct acl_expr *expr, struct acl_test *test)
5191{
5192 struct http_txn *txn = l7;
5193 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5194
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5195 if (!txn)
5196 return 0;
5197
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5198 if (txn->req.msg_state != HTTP_MSG_BODY)
5199 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5200
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5201 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5202 /* ensure the indexes are not affected */
5203 return 0;
5204
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5205 end = txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
5206 ptr = http_get_path(txn);
5207 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5208 return 0;
5209
5210 /* OK, we got the '/' ! */
5211 test->ptr = ptr;
5212
5213 while (ptr < end && *ptr != '?')
5214 ptr++;
5215
5216 test->len = ptr - test->ptr;
5217
5218 /* we do not need to set READ_ONLY because the data is in a buffer */
5219 test->flags = ACL_TEST_F_VOL_1ST;
5220 return 1;
5221}
5222
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]5223static int
5224acl_fetch_proto_http(struct proxy *px, struct session *s, void *l7, int dir,
5225 struct acl_expr *expr, struct acl_test *test)
5226{
5227 struct buffer *req = s->req;
5228 struct http_txn *txn = &s->txn;
5229 struct http_msg *msg = &txn->req;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5230
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]5231 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
5232 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
5233 */
5234
5235 if (!s || !req)
5236 return 0;
5237
5238 if (unlikely(msg->msg_state == HTTP_MSG_BODY)) {
5239 /* Already decoded as OK */
5240 test->flags |= ACL_TEST_F_SET_RES_PASS;
5241 return 1;
5242 }
5243
5244 /* Try to decode HTTP request */
5245 if (likely(req->lr < req->r))
5246 http_msg_analyzer(req, msg, &txn->hdr_idx);
5247
5248 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
5249 if ((msg->msg_state == HTTP_MSG_ERROR) || (req->flags & BF_FULL)) {
5250 test->flags |= ACL_TEST_F_SET_RES_FAIL;
5251 return 1;
5252 }
5253 /* wait for final state */
5254 test->flags |= ACL_TEST_F_MAY_CHANGE;
5255 return 0;
5256 }
5257
5258 /* OK we got a valid HTTP request. We have some minor preparation to
5259 * perform so that further checks can rely on HTTP tests.
5260 */
5261 msg->sol = req->data + msg->som;
5262 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
5263 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
5264 s->flags |= SN_REDIRECTABLE;
5265
5266 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(req, msg, txn)) {
5267 test->flags |= ACL_TEST_F_SET_RES_FAIL;
5268 return 1;
5269 }
5270
5271 test->flags |= ACL_TEST_F_SET_RES_PASS;
5272 return 1;
5273}
5274
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5275
5276/************************************************************************/
5277/* All supported keywords must be declared here. */
5278/************************************************************************/
5279
5280/* Note: must not be declared <const> as its list will be overwritten */
5281static struct acl_kw_list acl_kws = {{ },{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]5282 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT },
5283
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5284 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT },
5285 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5286 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE },
5287 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5288
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5289 { "url", acl_parse_str, acl_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5290 { "url_beg", acl_parse_str, acl_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
5291 { "url_end", acl_parse_str, acl_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE },
5292 { "url_sub", acl_parse_str, acl_fetch_url, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
5293 { "url_dir", acl_parse_str, acl_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
5294 { "url_dom", acl_parse_str, acl_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
5295 { "url_reg", acl_parse_reg, acl_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
5296 { "url_ip", acl_parse_ip, acl_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE },
5297 { "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]5298
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5299 /* note: we should set hdr* to use ACL_USE_HDR_VOLATILE, and chdr* to use L7REQ_VOLATILE */
5300 { "hdr", acl_parse_str, acl_fetch_chdr, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5301 { "hdr_reg", acl_parse_reg, acl_fetch_chdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
5302 { "hdr_beg", acl_parse_str, acl_fetch_chdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
5303 { "hdr_end", acl_parse_str, acl_fetch_chdr, acl_match_end, ACL_USE_L7REQ_VOLATILE },
5304 { "hdr_sub", acl_parse_str, acl_fetch_chdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
5305 { "hdr_dir", acl_parse_str, acl_fetch_chdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
5306 { "hdr_dom", acl_parse_str, acl_fetch_chdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
5307 { "hdr_cnt", acl_parse_int, acl_fetch_chdr_cnt,acl_match_int, ACL_USE_L7REQ_VOLATILE },
5308 { "hdr_val", acl_parse_int, acl_fetch_chdr_val,acl_match_int, ACL_USE_L7REQ_VOLATILE },
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]5309 { "hdr_ip", acl_parse_ip, acl_fetch_chdr_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE },
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5310
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5311 { "shdr", acl_parse_str, acl_fetch_shdr, acl_match_str, ACL_USE_L7RTR_VOLATILE },
5312 { "shdr_reg", acl_parse_reg, acl_fetch_shdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE },
5313 { "shdr_beg", acl_parse_str, acl_fetch_shdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE },
5314 { "shdr_end", acl_parse_str, acl_fetch_shdr, acl_match_end, ACL_USE_L7RTR_VOLATILE },
5315 { "shdr_sub", acl_parse_str, acl_fetch_shdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE },
5316 { "shdr_dir", acl_parse_str, acl_fetch_shdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE },
5317 { "shdr_dom", acl_parse_str, acl_fetch_shdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE },
5318 { "shdr_cnt", acl_parse_int, acl_fetch_shdr_cnt,acl_match_int, ACL_USE_L7RTR_VOLATILE },
5319 { "shdr_val", acl_parse_int, acl_fetch_shdr_val,acl_match_int, ACL_USE_L7RTR_VOLATILE },
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]5320 { "shdr_ip", acl_parse_ip, acl_fetch_shdr_ip, acl_match_ip, ACL_USE_L7RTR_VOLATILE },
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5321
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5322 { "path", acl_parse_str, acl_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5323 { "path_reg", acl_parse_reg, acl_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
5324 { "path_beg", acl_parse_str, acl_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
5325 { "path_end", acl_parse_str, acl_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE },
5326 { "path_sub", acl_parse_str, acl_fetch_path, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
5327 { "path_dir", acl_parse_str, acl_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
5328 { "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]5329
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]5330 { NULL, NULL, NULL, NULL },
5331
5332#if 0
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5333 { "line", acl_parse_str, acl_fetch_line, acl_match_str },
5334 { "line_reg", acl_parse_reg, acl_fetch_line, acl_match_reg },
5335 { "line_beg", acl_parse_str, acl_fetch_line, acl_match_beg },
5336 { "line_end", acl_parse_str, acl_fetch_line, acl_match_end },
5337 { "line_sub", acl_parse_str, acl_fetch_line, acl_match_sub },
5338 { "line_dir", acl_parse_str, acl_fetch_line, acl_match_dir },
5339 { "line_dom", acl_parse_str, acl_fetch_line, acl_match_dom },
5340
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5341 { "cook", acl_parse_str, acl_fetch_cook, acl_match_str },
5342 { "cook_reg", acl_parse_reg, acl_fetch_cook, acl_match_reg },
5343 { "cook_beg", acl_parse_str, acl_fetch_cook, acl_match_beg },
5344 { "cook_end", acl_parse_str, acl_fetch_cook, acl_match_end },
5345 { "cook_sub", acl_parse_str, acl_fetch_cook, acl_match_sub },
5346 { "cook_dir", acl_parse_str, acl_fetch_cook, acl_match_dir },
5347 { "cook_dom", acl_parse_str, acl_fetch_cook, acl_match_dom },
5348 { "cook_pst", acl_parse_none, acl_fetch_cook, acl_match_pst },
5349
5350 { "auth_user", acl_parse_str, acl_fetch_user, acl_match_str },
5351 { "auth_regex", acl_parse_reg, acl_fetch_user, acl_match_reg },
5352 { "auth_clear", acl_parse_str, acl_fetch_auth, acl_match_str },
5353 { "auth_md5", acl_parse_str, acl_fetch_auth, acl_match_md5 },
5354 { NULL, NULL, NULL, NULL },
5355#endif
5356}};
5357
5358
5359__attribute__((constructor))
5360static void __http_protocol_init(void)
5361{
5362 acl_register_keywords(&acl_kws);
5363}
5364
5365
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5366/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5367 * Local variables:
5368 * c-indent-level: 8
5369 * c-basic-offset: 8
5370 * End:
5371 */