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git01.mediatek.com / haproxy / 48cb2aed5aab2dec7af77055a3cd9a158727527a / . / src / proto_http.c
blob: 33f01311b395c3cf1f790eb8e3d837c556a214c7 [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 */
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]643 if (rdr.len + s->srv->rdr_len > rdr.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]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;
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]656 if (rdr.len + len > rdr.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]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:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2193 msg_fmt = HTTP_303;
2194 break;
2195 case 301:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2196 msg_fmt = HTTP_301;
2197 break;
2198 case 302:
2199 default:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2200 msg_fmt = HTTP_302;
2201 break;
2202 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2203
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]2204 if (unlikely(chunk_strcpy(&rdr, msg_fmt)))
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2205 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2206
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2207 switch(rule->type) {
2208 case REDIRECT_TYPE_PREFIX: {
2209 const char *path;
2210 int pathlen;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2211
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2212 path = http_get_path(txn);
2213 /* build message using path */
2214 if (path) {
2215 pathlen = txn->req.sl.rq.u_l + (txn->req.sol+txn->req.sl.rq.u) - path;
2216 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
2217 int qs = 0;
2218 while (qs < pathlen) {
2219 if (path[qs] == '?') {
2220 pathlen = qs;
2221 break;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2222 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2223 qs++;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2224 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2225 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2226 } else {
2227 path = "/";
2228 pathlen = 1;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2229 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2230
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]2231 if (rdr.len + rule->rdr_len + pathlen > rdr.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2232 goto return_bad_req;
2233
2234 /* add prefix. Note that if prefix == "/", we don't want to
2235 * add anything, otherwise it makes it hard for the user to
2236 * configure a self-redirection.
2237 */
2238 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2239 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
2240 rdr.len += rule->rdr_len;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2241 }
2242
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2243 /* add path */
2244 memcpy(rdr.str + rdr.len, path, pathlen);
2245 rdr.len += pathlen;
2246 break;
2247 }
2248 case REDIRECT_TYPE_LOCATION:
2249 default:
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]2250 if (rdr.len + rule->rdr_len > rdr.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2251 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2252
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2253 /* add location */
2254 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
2255 rdr.len += rule->rdr_len;
2256 break;
2257 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2258
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2259 if (rule->cookie_len) {
2260 memcpy(rdr.str + rdr.len, "\r\nSet-Cookie: ", 14);
2261 rdr.len += 14;
2262 memcpy(rdr.str + rdr.len, rule->cookie_str, rule->cookie_len);
2263 rdr.len += rule->cookie_len;
2264 memcpy(rdr.str + rdr.len, "\r\n", 2);
2265 rdr.len += 2;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2266 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2267
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2268 /* add end of headers */
2269 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
2270 rdr.len += 4;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2271
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2272 txn->status = rule->code;
2273 /* let's log the request time */
2274 s->logs.tv_request = now;
2275 stream_int_retnclose(req->prod, &rdr);
2276 goto return_prx_cond;
2277 }
2278 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2279
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2280 /* that's OK for us now, let's move on to next analysers */
2281 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2282
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2283 return_bad_req:
2284 /* We centralize bad requests processing here */
2285 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2286 /* we detected a parsing error. We want to archive this request
2287 * in the dedicated proxy area for later troubleshooting.
2288 */
2289 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
2290 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2291
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2292 txn->req.msg_state = HTTP_MSG_ERROR;
2293 txn->status = 400;
2294 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
2295 s->fe->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]2296
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2297 return_prx_cond:
2298 if (!(s->flags & SN_ERR_MASK))
2299 s->flags |= SN_ERR_PRXCOND;
2300 if (!(s->flags & SN_FINST_MASK))
2301 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]2302
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2303 req->analysers = 0;
2304 req->analyse_exp = TICK_ETERNITY;
2305 return 0;
2306}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2307
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2308/* This function performs all the processing enabled for the current request.
2309 * It returns 1 if the processing can continue on next analysers, or zero if it
2310 * needs more data, encounters an error, or wants to immediately abort the
2311 * request. It relies on buffers flags, and updates s->req->analysers.
2312 */
2313int http_process_request(struct session *s, struct buffer *req, int an_bit)
2314{
2315 struct http_txn *txn = &s->txn;
2316 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2317
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2318 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
2319 /* we need more data */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2320 buffer_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2321 return 0;
2322 }
2323
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2324 req->analysers &= ~an_bit;
2325 req->analyse_exp = TICK_ETERNITY;
2326
2327 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
2328 now_ms, __FUNCTION__,
2329 s,
2330 req,
2331 req->rex, req->wex,
2332 req->flags,
2333 req->l,
2334 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2335
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2336 /*
2337 * Right now, we know that we have processed the entire headers
2338 * and that unwanted requests have been filtered out. We can do
2339 * whatever we want with the remaining request. Also, now we
2340 * may have separate values for ->fe, ->be.
2341 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2342
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2343 /*
2344 * If HTTP PROXY is set we simply get remote server address
2345 * parsing incoming request.
2346 */
2347 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
2348 url2sa(req->data + msg->sl.rq.u, msg->sl.rq.u_l, &s->srv_addr);
2349 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2350
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2351 /*
2352 * 7: the appsession cookie was looked up very early in 1.2,
2353 * so let's do the same now.
2354 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2355
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2356 /* It needs to look into the URI */
2357 if (s->be->appsession_name) {
2358 get_srv_from_appsession(s, &req->data[msg->som], msg->sl.rq.l);
2359 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2360
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2361 /*
2362 * 8: Now we can work with the cookies.
2363 * Note that doing so might move headers in the request, but
2364 * the fields will stay coherent and the URI will not move.
2365 * This should only be performed in the backend.
2366 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]2367 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2368 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
2369 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2370
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2371 /*
2372 * 9: add X-Forwarded-For if either the frontend or the backend
2373 * asks for it.
2374 */
2375 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
2376 if (s->cli_addr.ss_family == AF_INET) {
2377 /* Add an X-Forwarded-For header unless the source IP is
2378 * in the 'except' network range.
2379 */
2380 if ((!s->fe->except_mask.s_addr ||
2381 (((struct sockaddr_in *)&s->cli_addr)->sin_addr.s_addr & s->fe->except_mask.s_addr)
2382 != s->fe->except_net.s_addr) &&
2383 (!s->be->except_mask.s_addr ||
2384 (((struct sockaddr_in *)&s->cli_addr)->sin_addr.s_addr & s->be->except_mask.s_addr)
2385 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2386 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2387 unsigned char *pn;
2388 pn = (unsigned char *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2389
2390 /* Note: we rely on the backend to get the header name to be used for
2391 * x-forwarded-for, because the header is really meant for the backends.
2392 * However, if the backend did not specify any option, we have to rely
2393 * on the frontend's header name.
2394 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2395 if (s->be->fwdfor_hdr_len) {
2396 len = s->be->fwdfor_hdr_len;
2397 memcpy(trash, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2398 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2399 len = s->fe->fwdfor_hdr_len;
2400 memcpy(trash, s->fe->fwdfor_hdr_name, len);
2401 }
2402 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]2403
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2404 if (unlikely(http_header_add_tail2(req, &txn->req,
2405 &txn->hdr_idx, trash, len)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2406 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2407 }
2408 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2409 else if (s->cli_addr.ss_family == AF_INET6) {
2410 /* FIXME: for the sake of completeness, we should also support
2411 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2412 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2413 int len;
2414 char pn[INET6_ADDRSTRLEN];
2415 inet_ntop(AF_INET6,
2416 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
2417 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2418
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2419 /* Note: we rely on the backend to get the header name to be used for
2420 * x-forwarded-for, because the header is really meant for the backends.
2421 * However, if the backend did not specify any option, we have to rely
2422 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2423 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2424 if (s->be->fwdfor_hdr_len) {
2425 len = s->be->fwdfor_hdr_len;
2426 memcpy(trash, s->be->fwdfor_hdr_name, len);
2427 } else {
2428 len = s->fe->fwdfor_hdr_len;
2429 memcpy(trash, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2430 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2431 len += sprintf(trash + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2432
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2433 if (unlikely(http_header_add_tail2(req, &txn->req,
2434 &txn->hdr_idx, trash, len)) < 0)
2435 goto return_bad_req;
2436 }
2437 }
2438
2439 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]2440 * 10: add X-Original-To if either the frontend or the backend
2441 * asks for it.
2442 */
2443 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
2444
2445 /* FIXME: don't know if IPv6 can handle that case too. */
2446 if (s->cli_addr.ss_family == AF_INET) {
2447 /* Add an X-Original-To header unless the destination IP is
2448 * in the 'except' network range.
2449 */
2450 if (!(s->flags & SN_FRT_ADDR_SET))
2451 get_frt_addr(s);
2452
2453 if ((!s->fe->except_mask_to.s_addr ||
2454 (((struct sockaddr_in *)&s->frt_addr)->sin_addr.s_addr & s->fe->except_mask_to.s_addr)
2455 != s->fe->except_to.s_addr) &&
2456 (!s->be->except_mask_to.s_addr ||
2457 (((struct sockaddr_in *)&s->frt_addr)->sin_addr.s_addr & s->be->except_mask_to.s_addr)
2458 != s->be->except_to.s_addr)) {
2459 int len;
2460 unsigned char *pn;
2461 pn = (unsigned char *)&((struct sockaddr_in *)&s->frt_addr)->sin_addr;
2462
2463 /* Note: we rely on the backend to get the header name to be used for
2464 * x-original-to, because the header is really meant for the backends.
2465 * However, if the backend did not specify any option, we have to rely
2466 * on the frontend's header name.
2467 */
2468 if (s->be->orgto_hdr_len) {
2469 len = s->be->orgto_hdr_len;
2470 memcpy(trash, s->be->orgto_hdr_name, len);
2471 } else {
2472 len = s->fe->orgto_hdr_len;
2473 memcpy(trash, s->fe->orgto_hdr_name, len);
2474 }
2475 len += sprintf(trash + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
2476
2477 if (unlikely(http_header_add_tail2(req, &txn->req,
2478 &txn->hdr_idx, trash, len)) < 0)
2479 goto return_bad_req;
2480 }
2481 }
2482 }
2483
2484 /*
2485 * 11: add "Connection: close" if needed and not yet set.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2486 * Note that we do not need to add it in case of HTTP/1.0.
2487 */
2488 if (!(s->flags & SN_CONN_CLOSED) &&
2489 ((s->fe->options | s->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) {
2490 if ((unlikely(msg->sl.rq.v_l != 8) ||
2491 unlikely(req->data[msg->som + msg->sl.rq.v + 7] != '0')) &&
2492 unlikely(http_header_add_tail2(req, &txn->req, &txn->hdr_idx,
2493 "Connection: close", 17)) < 0)
2494 goto return_bad_req;
2495 s->flags |= SN_CONN_CLOSED;
2496 }
2497 /* Before we switch to data, was assignment set in manage_client_side_cookie?
2498 * If not assigned, perhaps we are balancing on url_param, but this is a
2499 * POST; and the parameters are in the body, maybe scan there to find our server.
2500 * (unless headers overflowed the buffer?)
2501 */
2502 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
2503 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
2504 s->be->url_param_post_limit != 0 && !(req->flags & BF_FULL) &&
2505 memchr(msg->sol + msg->sl.rq.u, '?', msg->sl.rq.u_l) == NULL) {
2506 /* are there enough bytes here? total == l || r || rlim ?
2507 * len is unsigned, but eoh is int,
2508 * how many bytes of body have we received?
2509 * eoh is the first empty line of the header
2510 */
2511 /* already established CRLF or LF at eoh, move to start of message, find message length in buffer */
2512 unsigned long len = req->l - (msg->sol[msg->eoh] == '\r' ? msg->eoh + 2 : msg->eoh + 1);
2513
2514 /* If we have HTTP/1.1 and Expect: 100-continue, then abort.
2515 * We can't assume responsibility for the server's decision,
2516 * on this URI and header set. See rfc2616: 14.20, 8.2.3,
2517 * We also can't change our mind later, about which server to choose, so round robin.
2518 */
2519 if ((likely(msg->sl.rq.v_l == 8) && req->data[msg->som + msg->sl.rq.v + 7] == '1')) {
2520 struct hdr_ctx ctx;
2521 ctx.idx = 0;
2522 /* Expect is allowed in 1.1, look for it */
2523 http_find_header2("Expect", 6, msg->sol, &txn->hdr_idx, &ctx);
2524 if (ctx.idx != 0 &&
2525 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0))
2526 /* We can't reliablly stall and wait for data, because of
2527 * .NET clients that don't conform to rfc2616; so, no need for
2528 * the next block to check length expectations.
2529 * We could send 100 status back to the client, but then we need to
2530 * re-write headers, and send the message. And this isn't the right
2531 * place for that action.
2532 * TODO: support Expect elsewhere and delete this block.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2533 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2534 goto end_check_maybe_wait_for_body;
2535 }
2536
2537 if (likely(len > s->be->url_param_post_limit)) {
2538 /* nothing to do, we got enough */
2539 } else {
2540 /* limit implies we are supposed to need this many bytes
2541 * to find the parameter. Let's see how many bytes we can wait for.
2542 */
2543 long long hint = len;
2544 struct hdr_ctx ctx;
2545 ctx.idx = 0;
2546 http_find_header2("Transfer-Encoding", 17, msg->sol, &txn->hdr_idx, &ctx);
2547 if (ctx.idx && ctx.vlen >= 7 && strncasecmp(ctx.line+ctx.val, "chunked", 7) == 0) {
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2548 buffer_dont_connect(req);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2549 req->analysers |= AN_REQ_HTTP_BODY;
2550 }
2551 else {
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2552 ctx.idx = 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2553 http_find_header2("Content-Length", 14, msg->sol, &txn->hdr_idx, &ctx);
2554 /* now if we have a length, we'll take the hint */
2555 if (ctx.idx) {
2556 /* We have Content-Length */
2557 if (strl2llrc(ctx.line+ctx.val,ctx.vlen, &hint))
2558 hint = 0; /* parse failure, untrusted client */
2559 else {
2560 if (hint > 0)
2561 msg->hdr_content_len = hint;
2562 else
2563 hint = 0; /* bad client, sent negative length */
2564 }
2565 }
2566 /* but limited to what we care about, maybe we don't expect any entity data (hint == 0) */
2567 if (s->be->url_param_post_limit < hint)
2568 hint = s->be->url_param_post_limit;
2569 /* now do we really need to buffer more data? */
2570 if (len < hint) {
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2571 buffer_dont_connect(req);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2572 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2573 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2574 /* else... There are no body bytes to wait for */
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2575 }
2576 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2577 }
2578 end_check_maybe_wait_for_body:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2579
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2580 /*************************************************************
2581 * OK, that's finished for the headers. We have done what we *
2582 * could. Let's switch to the DATA state. *
2583 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2584
Willy Tarreaua07a34e2009-08-16 23:27:46 +0200[diff] [blame]2585 buffer_set_rlim(req, req->size); /* no more rewrite needed */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2586 s->logs.tv_request = now;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2587
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2588 /* OK let's go on with the BODY now */
2589 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2590
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2591 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2592 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]2593 /* we detected a parsing error. We want to archive this request
2594 * in the dedicated proxy area for later troubleshooting.
2595 */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2596 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]2597 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2598
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2599 txn->req.msg_state = HTTP_MSG_ERROR;
2600 txn->status = 400;
2601 req->analysers = 0;
2602 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
2603 s->fe->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2604
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2605 if (!(s->flags & SN_ERR_MASK))
2606 s->flags |= SN_ERR_PRXCOND;
2607 if (!(s->flags & SN_FINST_MASK))
2608 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2609 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2610}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2611
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2612/* This function is an analyser which processes the HTTP tarpit. It always
2613 * returns zero, at the beginning because it prevents any other processing
2614 * from occurring, and at the end because it terminates the request.
2615 */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2616int http_process_tarpit(struct session *s, struct buffer *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2617{
2618 struct http_txn *txn = &s->txn;
2619
2620 /* This connection is being tarpitted. The CLIENT side has
2621 * already set the connect expiration date to the right
2622 * timeout. We just have to check that the client is still
2623 * there and that the timeout has not expired.
2624 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2625 buffer_dont_connect(req);
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2626 if ((req->flags & (BF_SHUTR|BF_READ_ERROR)) == 0 &&
2627 !tick_is_expired(req->analyse_exp, now_ms))
2628 return 0;
2629
2630 /* We will set the queue timer to the time spent, just for
2631 * logging purposes. We fake a 500 server error, so that the
2632 * attacker will not suspect his connection has been tarpitted.
2633 * It will not cause trouble to the logs because we can exclude
2634 * the tarpitted connections by filtering on the 'PT' status flags.
2635 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2636 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
2637
2638 txn->status = 500;
2639 if (req->flags != BF_READ_ERROR)
2640 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_500));
2641
2642 req->analysers = 0;
2643 req->analyse_exp = TICK_ETERNITY;
2644
2645 s->fe->failed_req++;
2646 if (!(s->flags & SN_ERR_MASK))
2647 s->flags |= SN_ERR_PRXCOND;
2648 if (!(s->flags & SN_FINST_MASK))
2649 s->flags |= SN_FINST_T;
2650 return 0;
2651}
2652
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2653/* This function is an analyser which processes the HTTP request body. It looks
2654 * for parameters to be used for the load balancing algorithm (url_param). It
2655 * must only be called after the standard HTTP request processing has occurred,
2656 * because it expects the request to be parsed. It returns zero if it needs to
2657 * read more data, or 1 once it has completed its analysis.
2658 */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2659int http_process_request_body(struct session *s, struct buffer *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2660{
2661 struct http_msg *msg = &s->txn.req;
2662 unsigned long body = msg->sol[msg->eoh] == '\r' ? msg->eoh + 2 : msg->eoh + 1;
2663 long long limit = s->be->url_param_post_limit;
2664 struct hdr_ctx ctx;
2665
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2666 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
2667 /* we need more data */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2668 buffer_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2669 return 0;
2670 }
2671
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2672 /* We have to parse the HTTP request body to find any required data.
2673 * "balance url_param check_post" should have been the only way to get
2674 * into this. We were brought here after HTTP header analysis, so all
2675 * related structures are ready.
2676 */
2677
2678 ctx.idx = 0;
2679
2680 /* now if we have a length, we'll take the hint */
2681 http_find_header2("Transfer-Encoding", 17, msg->sol, &s->txn.hdr_idx, &ctx);
2682 if (ctx.idx && ctx.vlen >= 7 && strncasecmp(ctx.line+ctx.val, "chunked", 7) == 0) {
2683 unsigned int chunk = 0;
2684 while (body < req->l && !HTTP_IS_CRLF(msg->sol[body])) {
2685 char c = msg->sol[body];
2686 if (ishex(c)) {
2687 unsigned int hex = toupper(c) - '0';
2688 if (hex > 9)
2689 hex -= 'A' - '9' - 1;
2690 chunk = (chunk << 4) | hex;
2691 } else
2692 break;
2693 body++;
2694 }
2695 if (body + 2 >= req->l) /* we want CRLF too */
2696 goto http_body_end; /* end of buffer? data missing! */
2697
2698 if (memcmp(msg->sol+body, "\r\n", 2) != 0)
2699 goto http_body_end; /* chunked encoding len ends with CRLF, and we don't have it yet */
2700
2701 body += 2; // skip CRLF
2702
2703 /* if we support more then one chunk here, we have to do it again when assigning server
2704 * 1. how much entity data do we have? new var
2705 * 2. should save entity_start, entity_cursor, elen & rlen in req; so we don't repeat scanning here
2706 * 3. test if elen > limit, or set new limit to elen if 0 (end of entity found)
2707 */
2708
2709 if (chunk < limit)
2710 limit = chunk; /* only reading one chunk */
2711 } else {
2712 if (msg->hdr_content_len < limit)
2713 limit = msg->hdr_content_len;
2714 }
2715
2716 http_body_end:
2717 /* we leave once we know we have nothing left to do. This means that we have
2718 * enough bytes, or that we know we'll not get any more (buffer full, read
2719 * buffer closed).
2720 */
2721 if (req->l - body >= limit || /* enough bytes! */
2722 req->flags & (BF_FULL | BF_READ_ERROR | BF_SHUTR | BF_READ_TIMEOUT) ||
2723 tick_is_expired(req->analyse_exp, now_ms)) {
2724 /* The situation will not evolve, so let's give up on the analysis. */
2725 s->logs.tv_request = now; /* update the request timer to reflect full request */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2726 req->analysers &= ~an_bit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2727 req->analyse_exp = TICK_ETERNITY;
2728 return 1;
2729 }
2730 else {
2731 /* Not enough data. We'll re-use the http-request
2732 * timeout here. Ideally, we should set the timeout
2733 * relative to the accept() date. We just set the
2734 * request timeout once at the beginning of the
2735 * request.
2736 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2737 buffer_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2738 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]2739 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2740 return 0;
2741 }
2742}
2743
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2744/* This function performs all the processing enabled for the current response.
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2745 * It normally returns zero, but may return 1 if it absolutely needs to be
2746 * called again after other functions. It relies on buffers flags, and updates
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2747 * t->rep->analysers. It might make sense to explode it into several other
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2748 * functions. It works like process_request (see indications above).
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2749 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2750int process_response(struct session *t)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2751{
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2752 struct http_txn *txn = &t->txn;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2753 struct buffer *req = t->req;
2754 struct buffer *rep = t->rep;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2755
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]2756 next_response:
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2757 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]2758 now_ms, __FUNCTION__,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2759 t,
2760 rep,
2761 rep->rex, rep->wex,
2762 rep->flags,
2763 rep->l,
2764 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]2765
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2766 if (rep->analysers & AN_RTR_HTTP_HDR) { /* receiving server headers */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2767 /*
2768 * Now parse the partial (or complete) lines.
2769 * We will check the response syntax, and also join multi-line
2770 * headers. An index of all the lines will be elaborated while
2771 * parsing.
2772 *
2773 * For the parsing, we use a 28 states FSM.
2774 *
2775 * Here is the information we currently have :
Willy Tarreaue393fe22008-08-16 22:18:07 +0200[diff] [blame]2776 * rep->data + rep->som = beginning of response
2777 * rep->data + rep->eoh = end of processed headers / start of current one
2778 * rep->data + rep->eol = end of current header or line (LF or CRLF)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2779 * rep->lr = first non-visited byte
2780 * rep->r = end of data
2781 */
Willy Tarreau7f875f62008-08-11 17:35:01 +0200[diff] [blame]2782
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2783 int cur_idx;
2784 struct http_msg *msg = &txn->rsp;
2785 struct proxy *cur_proxy;
2786
2787 if (likely(rep->lr < rep->r))
2788 http_msg_analyzer(rep, msg, &txn->hdr_idx);
2789
2790 /* 1: we might have to print this header in debug mode */
2791 if (unlikely((global.mode & MODE_DEBUG) &&
2792 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
2793 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
2794 char *eol, *sol;
2795
2796 sol = rep->data + msg->som;
2797 eol = sol + msg->sl.rq.l;
2798 debug_hdr("srvrep", t, sol, eol);
2799
2800 sol += hdr_idx_first_pos(&txn->hdr_idx);
2801 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
2802
2803 while (cur_idx) {
2804 eol = sol + txn->hdr_idx.v[cur_idx].len;
2805 debug_hdr("srvhdr", t, sol, eol);
2806 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2807 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2808 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2809 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2810
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2811 /*
2812 * Now we quickly check if we have found a full valid response.
2813 * If not so, we check the FD and buffer states before leaving.
2814 * A full response is indicated by the fact that we have seen
2815 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
2816 * responses are checked first.
2817 *
2818 * Depending on whether the client is still there or not, we
2819 * may send an error response back or not. Note that normally
2820 * we should only check for HTTP status there, and check I/O
2821 * errors somewhere else.
2822 */
2823
2824 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2825 /* Invalid response */
2826 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]2827 /* we detected a parsing error. We want to archive this response
2828 * in the dedicated proxy area for later troubleshooting.
2829 */
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2830 hdr_response_bad:
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2831 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
2832 http_capture_bad_message(&t->be->invalid_rep, t, rep, msg, t->fe);
2833
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2834 buffer_shutr_now(rep);
2835 buffer_shutw_now(req);
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2836 if (t->srv)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2837 t->srv->failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2838 t->be->failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2839 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2840 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2841 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2842 if (!(t->flags & SN_ERR_MASK))
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2843 t->flags |= SN_ERR_PRXCOND;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2844 if (!(t->flags & SN_FINST_MASK))
2845 t->flags |= SN_FINST_H;
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]2846
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2847 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2848 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2849 /* too large response does not fit in buffer. */
2850 else if (rep->flags & BF_FULL) {
2851 goto hdr_response_bad;
2852 }
2853 /* read error */
2854 else if (rep->flags & BF_READ_ERROR) {
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2855 if (msg->err_pos >= 0)
2856 http_capture_bad_message(&t->be->invalid_rep, t, rep, msg, t->fe);
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2857 buffer_shutr_now(rep);
2858 buffer_shutw_now(req);
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2859 if (t->srv)
2860 t->srv->failed_resp++;
2861 t->be->failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2862 rep->analysers = 0;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2863 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2864 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2865 if (!(t->flags & SN_ERR_MASK))
2866 t->flags |= SN_ERR_SRVCL;
2867 if (!(t->flags & SN_FINST_MASK))
2868 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2869 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2870 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2871 /* read timeout : return a 504 to the client. */
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2872 else if (rep->flags & BF_READ_TIMEOUT) {
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2873 if (msg->err_pos >= 0)
2874 http_capture_bad_message(&t->be->invalid_rep, t, rep, msg, t->fe);
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2875 buffer_shutr_now(rep);
2876 buffer_shutw_now(req);
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2877 if (t->srv)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2878 t->srv->failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2879 t->be->failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2880 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2881 txn->status = 504;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2882 stream_int_return(rep->cons, error_message(t, HTTP_ERR_504));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2883 if (!(t->flags & SN_ERR_MASK))
2884 t->flags |= SN_ERR_SRVTO;
2885 if (!(t->flags & SN_FINST_MASK))
2886 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2887 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2888 }
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2889 /* close from server */
2890 else if (rep->flags & BF_SHUTR) {
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2891 if (msg->err_pos >= 0)
2892 http_capture_bad_message(&t->be->invalid_rep, t, rep, msg, t->fe);
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2893 buffer_shutw_now(req);
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2894 if (t->srv)
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2895 t->srv->failed_resp++;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2896 t->be->failed_resp++;
2897 rep->analysers = 0;
2898 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2899 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2900 if (!(t->flags & SN_ERR_MASK))
2901 t->flags |= SN_ERR_SRVCL;
2902 if (!(t->flags & SN_FINST_MASK))
2903 t->flags |= SN_FINST_H;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2904 return 0;
2905 }
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2906 /* write error to client (we don't send any message then) */
2907 else if (rep->flags & BF_WRITE_ERROR) {
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2908 if (msg->err_pos >= 0)
2909 http_capture_bad_message(&t->be->invalid_rep, t, rep, msg, t->fe);
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2910 buffer_shutr_now(rep);
2911 t->be->failed_resp++;
2912 rep->analysers = 0;
2913 if (!(t->flags & SN_ERR_MASK))
2914 t->flags |= SN_ERR_CLICL;
2915 if (!(t->flags & SN_FINST_MASK))
2916 t->flags |= SN_FINST_H;
2917 return 0;
2918 }
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]2919
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2920 buffer_dont_close(rep);
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2921 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2922 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2923
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2924
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2925 /*****************************************************************
2926 * More interesting part now : we know that we have a complete *
2927 * response which at least looks like HTTP. We have an indicator *
2928 * of each header's length, so we can parse them quickly. *
2929 ****************************************************************/
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2930
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2931 if (msg->err_pos >= 0)
2932 http_capture_bad_message(&t->be->invalid_rep, t, rep, msg, t->fe);
2933
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2934 rep->analysers &= ~AN_RTR_HTTP_HDR;
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]2935
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2936 /* ensure we keep this pointer to the beginning of the message */
2937 msg->sol = rep->data + msg->som;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2938
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2939 /*
2940 * 1: get the status code and check for cacheability.
2941 */
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2942
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2943 t->logs.logwait &= ~LW_RESP;
2944 txn->status = strl2ui(rep->data + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2945
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2946 switch (txn->status) {
2947 case 200:
2948 case 203:
2949 case 206:
2950 case 300:
2951 case 301:
2952 case 410:
2953 /* RFC2616 @13.4:
2954 * "A response received with a status code of
2955 * 200, 203, 206, 300, 301 or 410 MAY be stored
2956 * by a cache (...) unless a cache-control
2957 * directive prohibits caching."
2958 *
2959 * RFC2616 @9.5: POST method :
2960 * "Responses to this method are not cacheable,
2961 * unless the response includes appropriate
2962 * Cache-Control or Expires header fields."
2963 */
2964 if (likely(txn->meth != HTTP_METH_POST) &&
2965 (t->be->options & (PR_O_CHK_CACHE|PR_O_COOK_NOC)))
2966 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
2967 break;
2968 default:
2969 break;
2970 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2971
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2972 /*
2973 * 2: we may need to capture headers
2974 */
2975 if (unlikely((t->logs.logwait & LW_RSPHDR) && t->fe->rsp_cap))
2976 capture_headers(rep->data + msg->som, &txn->hdr_idx,
2977 txn->rsp.cap, t->fe->rsp_cap);
2978
2979 /*
2980 * 3: we will have to evaluate the filters.
2981 * As opposed to version 1.2, now they will be evaluated in the
2982 * filters order and not in the header order. This means that
2983 * each filter has to be validated among all headers.
2984 *
2985 * Filters are tried with ->be first, then with ->fe if it is
2986 * different from ->be.
2987 */
2988
2989 t->flags &= ~SN_CONN_CLOSED; /* prepare for inspection */
2990
2991 cur_proxy = t->be;
2992 while (1) {
2993 struct proxy *rule_set = cur_proxy;
2994
2995 /* try headers filters */
2996 if (rule_set->rsp_exp != NULL) {
2997 if (apply_filters_to_response(t, rep, rule_set->rsp_exp) < 0) {
2998 return_bad_resp:
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2999 if (t->srv)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3000 t->srv->failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3001 cur_proxy->failed_resp++;
3002 return_srv_prx_502:
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3003 buffer_shutr_now(rep);
3004 buffer_shutw_now(req);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]3005 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3006 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]3007 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3008 if (!(t->flags & SN_ERR_MASK))
3009 t->flags |= SN_ERR_PRXCOND;
3010 if (!(t->flags & SN_FINST_MASK))
3011 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3012 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3013 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3014 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3015
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3016 /* has the response been denied ? */
3017 if (txn->flags & TX_SVDENY) {
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]3018 if (t->srv)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3019 t->srv->failed_secu++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3020 cur_proxy->denied_resp++;
3021 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]3022 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3023
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3024 /* We might have to check for "Connection:" */
3025 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]3026 !(t->flags & SN_CONN_CLOSED) &&
3027 txn->status >= 200) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3028 char *cur_ptr, *cur_end, *cur_next;
3029 int cur_idx, old_idx, delta, val;
3030 struct hdr_idx_elem *cur_hdr;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3031
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3032 cur_next = rep->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
3033 old_idx = 0;
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]3034
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3035 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
3036 cur_hdr = &txn->hdr_idx.v[cur_idx];
3037 cur_ptr = cur_next;
3038 cur_end = cur_ptr + cur_hdr->len;
3039 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3040
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3041 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
3042 if (val) {
3043 /* 3 possibilities :
3044 * - we have already set Connection: close,
3045 * so we remove this line.
3046 * - we have not yet set Connection: close,
3047 * but this line indicates close. We leave
3048 * it untouched and set the flag.
3049 * - we have not yet set Connection: close,
3050 * and this line indicates non-close. We
3051 * replace it.
3052 */
3053 if (t->flags & SN_CONN_CLOSED) {
3054 delta = buffer_replace2(rep, cur_ptr, cur_next, NULL, 0);
3055 txn->rsp.eoh += delta;
3056 cur_next += delta;
3057 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3058 txn->hdr_idx.used--;
3059 cur_hdr->len = 0;
3060 } else {
3061 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
3062 delta = buffer_replace2(rep, cur_ptr + val, cur_end,
3063 "close", 5);
3064 cur_next += delta;
3065 cur_hdr->len += delta;
3066 txn->rsp.eoh += delta;
3067 }
3068 t->flags |= SN_CONN_CLOSED;
3069 }
3070 }
3071 old_idx = cur_idx;
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]3072 }
3073 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3074
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3075 /* add response headers from the rule sets in the same order */
3076 for (cur_idx = 0; cur_idx < rule_set->nb_rspadd; cur_idx++) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3077 if (txn->status < 200)
3078 break;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3079 if (unlikely(http_header_add_tail(rep, &txn->rsp, &txn->hdr_idx,
3080 rule_set->rsp_add[cur_idx])) < 0)
3081 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]3082 }
3083
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3084 /* check whether we're already working on the frontend */
3085 if (cur_proxy == t->fe)
3086 break;
3087 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3088 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3089
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3090 /*
3091 * 4: check for server cookie.
3092 */
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3093 if ((t->be->cookie_name || t->be->appsession_name || t->fe->capture_name
3094 || (t->be->options & PR_O_CHK_CACHE)) && txn->status >= 200)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3095 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3096
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3097
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3098 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3099 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3100 */
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3101 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]3102 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3103
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3104 /*
3105 * 6: add server cookie in the response if needed
3106 */
3107 if ((t->srv) && !(t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_INS) &&
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3108 (!(t->be->options & PR_O_COOK_POST) || (txn->meth == HTTP_METH_POST)) &&
3109 txn->status >= 200) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3110 int len;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3111
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3112 /* the server is known, it's not the one the client requested, we have to
3113 * insert a set-cookie here, except if we want to insert only on POST
3114 * requests and this one isn't. Note that servers which don't have cookies
3115 * (eg: some backup servers) will return a full cookie removal request.
3116 */
3117 len = sprintf(trash, "Set-Cookie: %s=%s; path=/",
3118 t->be->cookie_name,
3119 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]3120
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3121 if (t->be->cookie_domain)
3122 len += sprintf(trash+len, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3123
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3124 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3125 trash, len)) < 0)
3126 goto return_bad_resp;
3127 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3128
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3129 /* Here, we will tell an eventual cache on the client side that we don't
3130 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
3131 * Some caches understand the correct form: 'no-cache="set-cookie"', but
3132 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
3133 */
3134 if ((t->be->options & PR_O_COOK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3135
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3136 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
3137
3138 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3139 "Cache-control: private", 22)) < 0)
3140 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3141 }
3142 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3143
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3144
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3145 /*
3146 * 7: check if result will be cacheable with a cookie.
3147 * We'll block the response if security checks have caught
3148 * nasty things such as a cacheable cookie.
3149 */
3150 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) ==
3151 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) &&
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3152 (t->be->options & PR_O_CHK_CACHE) &&
3153 txn->status >= 200) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3154
3155 /* we're in presence of a cacheable response containing
3156 * a set-cookie header. We'll block it as requested by
3157 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3158 */
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]3159 if (t->srv)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3160 t->srv->failed_secu++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3161 t->be->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3162
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3163 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
3164 t->be->id, t->srv?t->srv->id:"<dispatch>");
3165 send_log(t->be, LOG_ALERT,
3166 "Blocking cacheable cookie in response from instance %s, server %s.\n",
3167 t->be->id, t->srv?t->srv->id:"<dispatch>");
3168 goto return_srv_prx_502;
3169 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3170
3171 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3172 * 8: add "Connection: close" if needed and not yet set.
3173 * 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]3174 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3175 if (!(t->flags & SN_CONN_CLOSED) &&
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3176 ((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
3177 txn->status >= 200) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3178 if ((unlikely(msg->sl.st.v_l != 8) ||
3179 unlikely(req->data[msg->som + 7] != '0')) &&
3180 unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3181 "Connection: close", 17)) < 0)
3182 goto return_bad_resp;
3183 t->flags |= SN_CONN_CLOSED;
3184 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3185
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3186 /*
3187 * 9: we may be facing a 1xx response (100 continue, 101 switching protocols),
3188 * in which case this is not the right response, and we're waiting for the
3189 * next one. Let's allow this response to go to the client and wait for the
3190 * next one.
3191 */
3192 if (txn->status < 200) {
3193 hdr_idx_init(&txn->hdr_idx);
3194 buffer_forward(rep, rep->lr - (rep->data + msg->som));
3195 msg->msg_state = HTTP_MSG_RPBEFORE;
3196 txn->status = 0;
3197 rep->analysers |= AN_RTR_HTTP_HDR;
3198 goto next_response;
3199 }
3200
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3201 /*************************************************************
3202 * OK, that's finished for the headers. We have done what we *
3203 * could. Let's switch to the DATA state. *
3204 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3205
Willy Tarreaua07a34e2009-08-16 23:27:46 +0200[diff] [blame]3206 buffer_set_rlim(rep, rep->size); /* no more rewrite needed */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3207 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3208
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3209 /* if the user wants to log as soon as possible, without counting
3210 * bytes from the server, then this is the right moment. We have
3211 * to temporarily assign bytes_out to log what we currently have.
3212 */
3213 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
3214 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
3215 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]3216 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3217 t->logs.bytes_out = 0;
3218 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3219
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3220 /* Note: we must not try to cheat by jumping directly to DATA,
3221 * otherwise we would not let the client side wake up.
3222 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3223
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3224 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3225 }
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3226
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]3227 /* Note: eventhough nobody should set an unknown flag, clearing them right now will
3228 * probably reduce one day's debugging session.
3229 */
3230#ifdef DEBUG_DEV
3231 if (rep->analysers & ~(AN_RTR_HTTP_HDR)) {
3232 fprintf(stderr, "FIXME !!!! unknown analysers flags %s:%d = 0x%08X\n",
3233 __FILE__, __LINE__, rep->analysers);
3234 ABORT_NOW();
3235 }
3236#endif
3237 rep->analysers &= AN_RTR_HTTP_HDR;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3238 return 0;
3239}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3240
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3241/*
3242 * Produces data for the session <s> depending on its source. Expects to be
Willy Tarreau1ae3a052008-08-16 10:56:30 +0200[diff] [blame]3243 * called with client socket shut down on input. Right now, only statistics can
Willy Tarreau72b179a2008-08-28 16:01:32 +0200[diff] [blame]3244 * be produced. It stops by itself by unsetting the BF_HIJACK flag from the
3245 * 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]3246 * the buffer, or simply by letting an empty buffer upon return.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3247 */
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3248void produce_content(struct session *s, struct buffer *rep)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3249{
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3250 if (s->data_source == DATA_SRC_NONE) {
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3251 buffer_stop_hijack(rep);
3252 return;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3253 }
3254 else if (s->data_source == DATA_SRC_STATS) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3255 /* dump server statistics */
Willy Tarreau56a560a2009-09-22 19:27:35 +0200[diff] [blame]3256 int ret;
Willy Tarreau56a560a2009-09-22 19:27:35 +0200[diff] [blame]3257 ret = stats_dump_http(s, rep, s->be->uri_auth);
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3258 if (ret >= 0)
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3259 return;
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3260 /* -1 indicates an error */
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3261 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3262
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3263 /* unknown data source or internal error */
3264 s->txn.status = 500;
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3265 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_500));
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3266 if (!(s->flags & SN_ERR_MASK))
3267 s->flags |= SN_ERR_PRXCOND;
3268 if (!(s->flags & SN_FINST_MASK))
3269 s->flags |= SN_FINST_R;
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]3270 buffer_stop_hijack(rep);
3271 return;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3272}
3273
3274
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3275/* Iterate the same filter through all request headers.
3276 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3277 * Since it can manage the switch to another backend, it updates the per-proxy
3278 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3279 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3280int 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]3281{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3282 char term;
3283 char *cur_ptr, *cur_end, *cur_next;
3284 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3285 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3286 struct hdr_idx_elem *cur_hdr;
3287 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]3288
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3289 last_hdr = 0;
3290
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3291 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3292 old_idx = 0;
3293
3294 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3295 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3296 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3297 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3298 (exp->action == ACT_ALLOW ||
3299 exp->action == ACT_DENY ||
3300 exp->action == ACT_TARPIT))
3301 return 0;
3302
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3303 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3304 if (!cur_idx)
3305 break;
3306
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3307 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3308 cur_ptr = cur_next;
3309 cur_end = cur_ptr + cur_hdr->len;
3310 cur_next = cur_end + cur_hdr->cr + 1;
3311
3312 /* Now we have one header between cur_ptr and cur_end,
3313 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3314 */
3315
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3316 /* The annoying part is that pattern matching needs
3317 * that we modify the contents to null-terminate all
3318 * strings before testing them.
3319 */
3320
3321 term = *cur_end;
3322 *cur_end = '\0';
3323
3324 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3325 switch (exp->action) {
3326 case ACT_SETBE:
3327 /* It is not possible to jump a second time.
3328 * FIXME: should we return an HTTP/500 here so that
3329 * the admin knows there's a problem ?
3330 */
3331 if (t->be != t->fe)
3332 break;
3333
3334 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3335 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3336 last_hdr = 1;
3337 break;
3338
3339 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3340 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3341 last_hdr = 1;
3342 break;
3343
3344 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3345 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3346 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3347 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3348 break;
3349
3350 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3351 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3352 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3353 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3354 break;
3355
3356 case ACT_REPLACE:
3357 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3358 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3359 /* FIXME: if the user adds a newline in the replacement, the
3360 * index will not be recalculated for now, and the new line
3361 * will not be counted as a new header.
3362 */
3363
3364 cur_end += delta;
3365 cur_next += delta;
3366 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3367 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3368 break;
3369
3370 case ACT_REMOVE:
3371 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
3372 cur_next += delta;
3373
3374 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3375 txn->req.eoh += delta;
3376 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3377 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3378 cur_hdr->len = 0;
3379 cur_end = NULL; /* null-term has been rewritten */
3380 break;
3381
3382 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3383 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3384 if (cur_end)
3385 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3386
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3387 /* keep the link from this header to next one in case of later
3388 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3389 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3390 old_idx = cur_idx;
3391 }
3392 return 0;
3393}
3394
3395
3396/* Apply the filter to the request line.
3397 * Returns 0 if nothing has been done, 1 if the filter has been applied,
3398 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3399 * Since it can manage the switch to another backend, it updates the per-proxy
3400 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3401 */
3402int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
3403{
3404 char term;
3405 char *cur_ptr, *cur_end;
3406 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3407 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3408 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3409
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3410
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3411 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3412 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3413 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3414 (exp->action == ACT_ALLOW ||
3415 exp->action == ACT_DENY ||
3416 exp->action == ACT_TARPIT))
3417 return 0;
3418 else if (exp->action == ACT_REMOVE)
3419 return 0;
3420
3421 done = 0;
3422
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3423 cur_ptr = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3424 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3425
3426 /* Now we have the request line between cur_ptr and cur_end */
3427
3428 /* The annoying part is that pattern matching needs
3429 * that we modify the contents to null-terminate all
3430 * strings before testing them.
3431 */
3432
3433 term = *cur_end;
3434 *cur_end = '\0';
3435
3436 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3437 switch (exp->action) {
3438 case ACT_SETBE:
3439 /* It is not possible to jump a second time.
3440 * FIXME: should we return an HTTP/500 here so that
3441 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3442 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3443 if (t->be != t->fe)
3444 break;
3445
3446 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3447 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3448 done = 1;
3449 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3450
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3451 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3452 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3453 done = 1;
3454 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3455
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3456 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3457 txn->flags |= TX_CLDENY;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3458 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3459 done = 1;
3460 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3461
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3462 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3463 txn->flags |= TX_CLTARPIT;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3464 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3465 done = 1;
3466 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3467
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3468 case ACT_REPLACE:
3469 *cur_end = term; /* restore the string terminator */
3470 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3471 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3472 /* FIXME: if the user adds a newline in the replacement, the
3473 * index will not be recalculated for now, and the new line
3474 * will not be counted as a new header.
3475 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3476
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3477 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3478 cur_end += delta;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3479
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3480 txn->req.sol = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3481 cur_end = (char *)http_parse_reqline(&txn->req, req->data,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3482 HTTP_MSG_RQMETH,
3483 cur_ptr, cur_end + 1,
3484 NULL, NULL);
3485 if (unlikely(!cur_end))
3486 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3487
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3488 /* we have a full request and we know that we have either a CR
3489 * or an LF at <ptr>.
3490 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3491 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
3492 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]3493 /* there is no point trying this regex on headers */
3494 return 1;
3495 }
3496 }
3497 *cur_end = term; /* restore the string terminator */
3498 return done;
3499}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]3500
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3501
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3502
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3503/*
3504 * Apply all the req filters <exp> to all headers in buffer <req> of session <t>.
3505 * 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]3506 * unparsable request. Since it can manage the switch to another backend, it
3507 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3508 */
3509int apply_filters_to_request(struct session *t, struct buffer *req, struct hdr_exp *exp)
3510{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3511 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3512 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3513 while (exp && !(txn->flags & (TX_CLDENY|TX_CLTARPIT))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3514 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3515
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3516 /*
3517 * The interleaving of transformations and verdicts
3518 * makes it difficult to decide to continue or stop
3519 * the evaluation.
3520 */
3521
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3522 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3523 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
3524 exp->action == ACT_TARPIT || exp->action == ACT_PASS)) {
3525 exp = exp->next;
3526 continue;
3527 }
3528
3529 /* Apply the filter to the request line. */
3530 ret = apply_filter_to_req_line(t, req, exp);
3531 if (unlikely(ret < 0))
3532 return -1;
3533
3534 if (likely(ret == 0)) {
3535 /* The filter did not match the request, it can be
3536 * iterated through all headers.
3537 */
3538 apply_filter_to_req_headers(t, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3539 }
3540 exp = exp->next;
3541 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3542 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3543}
3544
3545
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3546
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3547/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3548 * Manage client-side cookie. It can impact performance by about 2% so it is
3549 * desirable to call it only when needed.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3550 */
3551void manage_client_side_cookies(struct session *t, struct buffer *req)
3552{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3553 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3554 char *p1, *p2, *p3, *p4;
3555 char *del_colon, *del_cookie, *colon;
3556 int app_cookies;
3557
3558 appsess *asession_temp = NULL;
3559 appsess local_asession;
3560
3561 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3562 int cur_idx, old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3563
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3564 /* Iterate through the headers.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3565 * we start with the start line.
3566 */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]3567 old_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3568 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3569
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3570 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3571 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3572 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3573
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3574 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3575 cur_ptr = cur_next;
3576 cur_end = cur_ptr + cur_hdr->len;
3577 cur_next = cur_end + cur_hdr->cr + 1;
3578
3579 /* We have one full header between cur_ptr and cur_end, and the
3580 * next header starts at cur_next. We're only interested in
3581 * "Cookie:" headers.
3582 */
3583
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3584 val = http_header_match2(cur_ptr, cur_end, "Cookie", 6);
3585 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3586 old_idx = cur_idx;
3587 continue;
3588 }
3589
3590 /* Now look for cookies. Conforming to RFC2109, we have to support
3591 * attributes whose name begin with a '$', and associate them with
3592 * the right cookie, if we want to delete this cookie.
3593 * So there are 3 cases for each cookie read :
3594 * 1) it's a special attribute, beginning with a '$' : ignore it.
3595 * 2) it's a server id cookie that we *MAY* want to delete : save
3596 * some pointers on it (last semi-colon, beginning of cookie...)
3597 * 3) it's an application cookie : we *MAY* have to delete a previous
3598 * "special" cookie.
3599 * At the end of loop, if a "special" cookie remains, we may have to
3600 * remove it. If no application cookie persists in the header, we
3601 * *MUST* delete it
3602 */
3603
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3604 colon = p1 = cur_ptr + val; /* first non-space char after 'Cookie:' */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3605
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3606 /* del_cookie == NULL => nothing to be deleted */
3607 del_colon = del_cookie = NULL;
3608 app_cookies = 0;
3609
3610 while (p1 < cur_end) {
3611 /* skip spaces and colons, but keep an eye on these ones */
3612 while (p1 < cur_end) {
3613 if (*p1 == ';' || *p1 == ',')
3614 colon = p1;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3615 else if (!isspace((unsigned char)*p1))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3616 break;
3617 p1++;
3618 }
3619
3620 if (p1 == cur_end)
3621 break;
3622
3623 /* p1 is at the beginning of the cookie name */
3624 p2 = p1;
3625 while (p2 < cur_end && *p2 != '=')
3626 p2++;
3627
3628 if (p2 == cur_end)
3629 break;
3630
3631 p3 = p2 + 1; /* skips the '=' sign */
3632 if (p3 == cur_end)
3633 break;
3634
3635 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3636 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';' && *p4 != ',')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3637 p4++;
3638
3639 /* here, we have the cookie name between p1 and p2,
3640 * and its value between p3 and p4.
3641 * we can process it :
3642 *
3643 * Cookie: NAME=VALUE;
3644 * | || || |
3645 * | || || +--> p4
3646 * | || |+-------> p3
3647 * | || +--------> p2
3648 * | |+------------> p1
3649 * | +-------------> colon
3650 * +--------------------> cur_ptr
3651 */
3652
3653 if (*p1 == '$') {
3654 /* skip this one */
3655 }
3656 else {
3657 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3658 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3659 txn->cli_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3660 (p4 - p1 >= t->fe->capture_namelen) &&
3661 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3662 int log_len = p4 - p1;
3663
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]3664 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3665 Alert("HTTP logging : out of memory.\n");
3666 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3667 if (log_len > t->fe->capture_len)
3668 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3669 memcpy(txn->cli_cookie, p1, log_len);
3670 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3671 }
3672 }
3673
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3674 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
3675 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3676 /* Cool... it's the right one */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3677 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3678 char *delim;
3679
3680 /* if we're in cookie prefix mode, we'll search the delimitor so that we
3681 * have the server ID betweek p3 and delim, and the original cookie between
3682 * delim+1 and p4. Otherwise, delim==p4 :
3683 *
3684 * Cookie: NAME=SRV~VALUE;
3685 * | || || | |
3686 * | || || | +--> p4
3687 * | || || +--------> delim
3688 * | || |+-----------> p3
3689 * | || +------------> p2
3690 * | |+----------------> p1
3691 * | +-----------------> colon
3692 * +------------------------> cur_ptr
3693 */
3694
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3695 if (t->be->options & PR_O_COOK_PFX) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3696 for (delim = p3; delim < p4; delim++)
3697 if (*delim == COOKIE_DELIM)
3698 break;
3699 }
3700 else
3701 delim = p4;
3702
3703
3704 /* Here, we'll look for the first running server which supports the cookie.
3705 * This allows to share a same cookie between several servers, for example
3706 * to dedicate backup servers to specific servers only.
3707 * However, to prevent clients from sticking to cookie-less backup server
3708 * when they have incidentely learned an empty cookie, we simply ignore
3709 * empty cookies and mark them as invalid.
3710 */
3711 if (delim == p3)
3712 srv = NULL;
3713
3714 while (srv) {
Willy Tarreau92f2ab12007-02-02 22:14:47 +0100[diff] [blame]3715 if (srv->cookie && (srv->cklen == delim - p3) &&
3716 !memcmp(p3, srv->cookie, delim - p3)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3717 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3718 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3719 txn->flags &= ~TX_CK_MASK;
3720 txn->flags |= TX_CK_VALID;
3721 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3722 t->srv = srv;
3723 break;
3724 } else {
3725 /* we found a server, but it's down */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3726 txn->flags &= ~TX_CK_MASK;
3727 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3728 }
3729 }
3730 srv = srv->next;
3731 }
3732
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3733 if (!srv && !(txn->flags & TX_CK_DOWN)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3734 /* no server matched this cookie */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3735 txn->flags &= ~TX_CK_MASK;
3736 txn->flags |= TX_CK_INVALID;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3737 }
3738
3739 /* depending on the cookie mode, we may have to either :
3740 * - delete the complete cookie if we're in insert+indirect mode, so that
3741 * the server never sees it ;
3742 * - remove the server id from the cookie value, and tag the cookie as an
3743 * application cookie so that it does not get accidentely removed later,
3744 * if we're in cookie prefix mode
3745 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3746 if ((t->be->options & PR_O_COOK_PFX) && (delim != p4)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3747 int delta; /* negative */
3748
3749 delta = buffer_replace2(req, p3, delim + 1, NULL, 0);
3750 p4 += delta;
3751 cur_end += delta;
3752 cur_next += delta;
3753 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3754 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3755
3756 del_cookie = del_colon = NULL;
3757 app_cookies++; /* protect the header from deletion */
3758 }
3759 else if (del_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3760 (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]3761 del_cookie = p1;
3762 del_colon = colon;
3763 }
3764 } else {
3765 /* now we know that we must keep this cookie since it's
3766 * not ours. But if we wanted to delete our cookie
3767 * earlier, we cannot remove the complete header, but we
3768 * can remove the previous block itself.
3769 */
3770 app_cookies++;
3771
3772 if (del_cookie != NULL) {
3773 int delta; /* negative */
3774
3775 delta = buffer_replace2(req, del_cookie, p1, NULL, 0);
3776 p4 += delta;
3777 cur_end += delta;
3778 cur_next += delta;
3779 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3780 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3781 del_cookie = del_colon = NULL;
3782 }
3783 }
3784
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3785 if ((t->be->appsession_name != NULL) &&
3786 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3787 /* first, let's see if the cookie is our appcookie*/
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3788
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3789 /* Cool... it's the right one */
3790
3791 asession_temp = &local_asession;
3792
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3793 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3794 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
3795 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
3796 return;
3797 }
3798
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3799 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
3800 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3801 asession_temp->serverid = NULL;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3802
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3803 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3804 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
3805 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3806 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3807 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3808 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3809 Alert("Not enough memory process_cli():asession:calloc().\n");
3810 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
3811 return;
3812 }
3813
3814 asession_temp->sessid = local_asession.sessid;
3815 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3816 asession_temp->request_count = 0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3817 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3818 } else {
3819 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3820 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3821 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3822 if (asession_temp->serverid == NULL) {
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3823 /* TODO redispatch request */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3824 Alert("Found Application Session without matching server.\n");
3825 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3826 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3827 while (srv) {
3828 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3829 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3830 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3831 txn->flags &= ~TX_CK_MASK;
3832 txn->flags |= TX_CK_VALID;
3833 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3834 t->srv = srv;
3835 break;
3836 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3837 txn->flags &= ~TX_CK_MASK;
3838 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3839 }
3840 }
3841 srv = srv->next;
3842 }/* end while(srv) */
3843 }/* end else if server == NULL */
3844
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]3845 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3846 asession_temp->request_count++;
3847#if defined(DEBUG_HASH)
3848 Alert("manage_client_side_cookies\n");
3849 appsession_hash_dump(&(t->be->htbl_proxy));
3850#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3851 }/* end if ((t->proxy->appsession_name != NULL) ... */
3852 }
3853
3854 /* we'll have to look for another cookie ... */
3855 p1 = p4;
3856 } /* while (p1 < cur_end) */
3857
3858 /* There's no more cookie on this line.
3859 * We may have marked the last one(s) for deletion.
3860 * We must do this now in two ways :
3861 * - if there is no app cookie, we simply delete the header ;
3862 * - if there are app cookies, we must delete the end of the
3863 * string properly, including the colon/semi-colon before
3864 * the cookie name.
3865 */
3866 if (del_cookie != NULL) {
3867 int delta;
3868 if (app_cookies) {
3869 delta = buffer_replace2(req, del_colon, cur_end, NULL, 0);
3870 cur_end = del_colon;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3871 cur_hdr->len += delta;
3872 } else {
3873 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3874
3875 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3876 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3877 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3878 cur_hdr->len = 0;
3879 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]3880 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3881 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3882 }
3883
3884 /* keep the link from this header to next one */
3885 old_idx = cur_idx;
3886 } /* end of cookie processing on this header */
3887}
3888
3889
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3890/* Iterate the same filter through all response headers contained in <rtr>.
3891 * Returns 1 if this filter can be stopped upon return, otherwise 0.
3892 */
3893int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
3894{
3895 char term;
3896 char *cur_ptr, *cur_end, *cur_next;
3897 int cur_idx, old_idx, last_hdr;
3898 struct http_txn *txn = &t->txn;
3899 struct hdr_idx_elem *cur_hdr;
3900 int len, delta;
3901
3902 last_hdr = 0;
3903
3904 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
3905 old_idx = 0;
3906
3907 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3908 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3909 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3910 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3911 (exp->action == ACT_ALLOW ||
3912 exp->action == ACT_DENY))
3913 return 0;
3914
3915 cur_idx = txn->hdr_idx.v[old_idx].next;
3916 if (!cur_idx)
3917 break;
3918
3919 cur_hdr = &txn->hdr_idx.v[cur_idx];
3920 cur_ptr = cur_next;
3921 cur_end = cur_ptr + cur_hdr->len;
3922 cur_next = cur_end + cur_hdr->cr + 1;
3923
3924 /* Now we have one header between cur_ptr and cur_end,
3925 * and the next header starts at cur_next.
3926 */
3927
3928 /* The annoying part is that pattern matching needs
3929 * that we modify the contents to null-terminate all
3930 * strings before testing them.
3931 */
3932
3933 term = *cur_end;
3934 *cur_end = '\0';
3935
3936 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3937 switch (exp->action) {
3938 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3939 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3940 last_hdr = 1;
3941 break;
3942
3943 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3944 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3945 last_hdr = 1;
3946 break;
3947
3948 case ACT_REPLACE:
3949 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3950 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
3951 /* FIXME: if the user adds a newline in the replacement, the
3952 * index will not be recalculated for now, and the new line
3953 * will not be counted as a new header.
3954 */
3955
3956 cur_end += delta;
3957 cur_next += delta;
3958 cur_hdr->len += delta;
3959 txn->rsp.eoh += delta;
3960 break;
3961
3962 case ACT_REMOVE:
3963 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
3964 cur_next += delta;
3965
3966 /* FIXME: this should be a separate function */
3967 txn->rsp.eoh += delta;
3968 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3969 txn->hdr_idx.used--;
3970 cur_hdr->len = 0;
3971 cur_end = NULL; /* null-term has been rewritten */
3972 break;
3973
3974 }
3975 }
3976 if (cur_end)
3977 *cur_end = term; /* restore the string terminator */
3978
3979 /* keep the link from this header to next one in case of later
3980 * removal of next header.
3981 */
3982 old_idx = cur_idx;
3983 }
3984 return 0;
3985}
3986
3987
3988/* Apply the filter to the status line in the response buffer <rtr>.
3989 * Returns 0 if nothing has been done, 1 if the filter has been applied,
3990 * or -1 if a replacement resulted in an invalid status line.
3991 */
3992int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
3993{
3994 char term;
3995 char *cur_ptr, *cur_end;
3996 int done;
3997 struct http_txn *txn = &t->txn;
3998 int len, delta;
3999
4000
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4001 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4002 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4003 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4004 (exp->action == ACT_ALLOW ||
4005 exp->action == ACT_DENY))
4006 return 0;
4007 else if (exp->action == ACT_REMOVE)
4008 return 0;
4009
4010 done = 0;
4011
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4012 cur_ptr = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4013 cur_end = cur_ptr + txn->rsp.sl.rq.l;
4014
4015 /* Now we have the status line between cur_ptr and cur_end */
4016
4017 /* The annoying part is that pattern matching needs
4018 * that we modify the contents to null-terminate all
4019 * strings before testing them.
4020 */
4021
4022 term = *cur_end;
4023 *cur_end = '\0';
4024
4025 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4026 switch (exp->action) {
4027 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4028 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4029 done = 1;
4030 break;
4031
4032 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4033 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4034 done = 1;
4035 break;
4036
4037 case ACT_REPLACE:
4038 *cur_end = term; /* restore the string terminator */
4039 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4040 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4041 /* FIXME: if the user adds a newline in the replacement, the
4042 * index will not be recalculated for now, and the new line
4043 * will not be counted as a new header.
4044 */
4045
4046 txn->rsp.eoh += delta;
4047 cur_end += delta;
4048
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4049 txn->rsp.sol = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4050 cur_end = (char *)http_parse_stsline(&txn->rsp, rtr->data,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]4051 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4052 cur_ptr, cur_end + 1,
4053 NULL, NULL);
4054 if (unlikely(!cur_end))
4055 return -1;
4056
4057 /* we have a full respnse and we know that we have either a CR
4058 * or an LF at <ptr>.
4059 */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4060 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]4061 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.rq.l, *cur_end == '\r');
4062 /* there is no point trying this regex on headers */
4063 return 1;
4064 }
4065 }
4066 *cur_end = term; /* restore the string terminator */
4067 return done;
4068}
4069
4070
4071
4072/*
4073 * Apply all the resp filters <exp> to all headers in buffer <rtr> of session <t>.
4074 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
4075 * unparsable response.
4076 */
4077int apply_filters_to_response(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4078{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4079 struct http_txn *txn = &t->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4080 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4081 while (exp && !(txn->flags & TX_SVDENY)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4082 int ret;
4083
4084 /*
4085 * The interleaving of transformations and verdicts
4086 * makes it difficult to decide to continue or stop
4087 * the evaluation.
4088 */
4089
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4090 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4091 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4092 exp->action == ACT_PASS)) {
4093 exp = exp->next;
4094 continue;
4095 }
4096
4097 /* Apply the filter to the status line. */
4098 ret = apply_filter_to_sts_line(t, rtr, exp);
4099 if (unlikely(ret < 0))
4100 return -1;
4101
4102 if (likely(ret == 0)) {
4103 /* The filter did not match the response, it can be
4104 * iterated through all headers.
4105 */
4106 apply_filter_to_resp_headers(t, rtr, exp);
4107 }
4108 exp = exp->next;
4109 }
4110 return 0;
4111}
4112
4113
4114
4115/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]4116 * Manage server-side cookies. It can impact performance by about 2% so it is
4117 * desirable to call it only when needed.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4118 */
4119void manage_server_side_cookies(struct session *t, struct buffer *rtr)
4120{
4121 struct http_txn *txn = &t->txn;
4122 char *p1, *p2, *p3, *p4;
4123
4124 appsess *asession_temp = NULL;
4125 appsess local_asession;
4126
4127 char *cur_ptr, *cur_end, *cur_next;
4128 int cur_idx, old_idx, delta;
4129
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4130 /* Iterate through the headers.
4131 * we start with the start line.
4132 */
4133 old_idx = 0;
4134 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4135
4136 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
4137 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4138 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4139
4140 cur_hdr = &txn->hdr_idx.v[cur_idx];
4141 cur_ptr = cur_next;
4142 cur_end = cur_ptr + cur_hdr->len;
4143 cur_next = cur_end + cur_hdr->cr + 1;
4144
4145 /* We have one full header between cur_ptr and cur_end, and the
4146 * next header starts at cur_next. We're only interested in
4147 * "Cookie:" headers.
4148 */
4149
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4150 val = http_header_match2(cur_ptr, cur_end, "Set-Cookie", 10);
4151 if (!val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4152 old_idx = cur_idx;
4153 continue;
4154 }
4155
4156 /* OK, right now we know we have a set-cookie at cur_ptr */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4157 txn->flags |= TX_SCK_ANY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4158
4159
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4160 /* maybe we only wanted to see if there was a set-cookie. Note that
4161 * the cookie capture is declared in the fronend.
4162 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4163 if (t->be->cookie_name == NULL &&
4164 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4165 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4166 return;
4167
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4168 p1 = cur_ptr + val; /* first non-space char after 'Set-Cookie:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4169
4170 while (p1 < cur_end) { /* in fact, we'll break after the first cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4171 if (p1 == cur_end || *p1 == ';') /* end of cookie */
4172 break;
4173
4174 /* p1 is at the beginning of the cookie name */
4175 p2 = p1;
4176
4177 while (p2 < cur_end && *p2 != '=' && *p2 != ';')
4178 p2++;
4179
4180 if (p2 == cur_end || *p2 == ';') /* next cookie */
4181 break;
4182
4183 p3 = p2 + 1; /* skip the '=' sign */
4184 if (p3 == cur_end)
4185 break;
4186
4187 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4188 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';')
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4189 p4++;
4190
4191 /* here, we have the cookie name between p1 and p2,
4192 * and its value between p3 and p4.
4193 * we can process it.
4194 */
4195
4196 /* first, let's see if we want to capture it */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4197 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4198 txn->srv_cookie == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4199 (p4 - p1 >= t->fe->capture_namelen) &&
4200 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4201 int log_len = p4 - p1;
4202
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]4203 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4204 Alert("HTTP logging : out of memory.\n");
4205 }
4206
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4207 if (log_len > t->fe->capture_len)
4208 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4209 memcpy(txn->srv_cookie, p1, log_len);
4210 txn->srv_cookie[log_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4211 }
4212
4213 /* now check if we need to process it for persistence */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4214 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4215 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4216 /* Cool... it's the right one */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4217 txn->flags |= TX_SCK_SEEN;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4218
4219 /* If the cookie is in insert mode on a known server, we'll delete
4220 * this occurrence because we'll insert another one later.
4221 * We'll delete it too if the "indirect" option is set and we're in
4222 * a direct access. */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4223 if (((t->srv) && (t->be->options & PR_O_COOK_INS)) ||
4224 ((t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_IND))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4225 /* this header must be deleted */
4226 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4227 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4228 txn->hdr_idx.used--;
4229 cur_hdr->len = 0;
4230 cur_next += delta;
4231 txn->rsp.eoh += delta;
4232
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4233 txn->flags |= TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4234 }
4235 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4236 (t->be->options & PR_O_COOK_RW)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4237 /* replace bytes p3->p4 with the cookie name associated
4238 * with this server since we know it.
4239 */
4240 delta = buffer_replace2(rtr, p3, p4, t->srv->cookie, t->srv->cklen);
4241 cur_hdr->len += delta;
4242 cur_next += delta;
4243 txn->rsp.eoh += delta;
4244
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4245 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4246 }
4247 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4248 (t->be->options & PR_O_COOK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4249 /* insert the cookie name associated with this server
4250 * before existing cookie, and insert a delimitor between them..
4251 */
4252 delta = buffer_replace2(rtr, p3, p3, t->srv->cookie, t->srv->cklen + 1);
4253 cur_hdr->len += delta;
4254 cur_next += delta;
4255 txn->rsp.eoh += delta;
4256
4257 p3[t->srv->cklen] = COOKIE_DELIM;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4258 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4259 }
4260 }
4261 /* next, let's see if the cookie is our appcookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4262 else if ((t->be->appsession_name != NULL) &&
4263 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4264
4265 /* Cool... it's the right one */
4266
4267 size_t server_id_len = strlen(t->srv->id) + 1;
4268 asession_temp = &local_asession;
4269
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4270 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4271 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4272 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4273 return;
4274 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4275 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4276 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4277 asession_temp->serverid = NULL;
4278
4279 /* only do insert, if lookup fails */
Ryan Warnick6d0b1fa2008-02-17 11:24:35 +0100[diff] [blame]4280 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
4281 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4282 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4283 Alert("Not enough Memory process_srv():asession:calloc().\n");
4284 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
4285 return;
4286 }
4287 asession_temp->sessid = local_asession.sessid;
4288 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4289 asession_temp->request_count = 0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4290 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
4291 } else {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4292 /* free wasted memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4293 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4294 }
4295
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4296 if (asession_temp->serverid == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4297 if ((asession_temp->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4298 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4299 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4300 return;
4301 }
4302 asession_temp->serverid[0] = '\0';
4303 }
4304
4305 if (asession_temp->serverid[0] == '\0')
4306 memcpy(asession_temp->serverid, t->srv->id, server_id_len);
4307
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]4308 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4309 asession_temp->request_count++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4310#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4311 Alert("manage_server_side_cookies\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4312 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4313#endif
4314 }/* end if ((t->proxy->appsession_name != NULL) ... */
4315 break; /* we don't want to loop again since there cannot be another cookie on the same line */
4316 } /* we're now at the end of the cookie value */
4317
4318 /* keep the link from this header to next one */
4319 old_idx = cur_idx;
4320 } /* end of cookie processing on this header */
4321}
4322
4323
4324
4325/*
4326 * Check if response is cacheable or not. Updates t->flags.
4327 */
4328void check_response_for_cacheability(struct session *t, struct buffer *rtr)
4329{
4330 struct http_txn *txn = &t->txn;
4331 char *p1, *p2;
4332
4333 char *cur_ptr, *cur_end, *cur_next;
4334 int cur_idx;
4335
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]4336 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4337 return;
4338
4339 /* Iterate through the headers.
4340 * we start with the start line.
4341 */
4342 cur_idx = 0;
4343 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4344
4345 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4346 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4347 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4348
4349 cur_hdr = &txn->hdr_idx.v[cur_idx];
4350 cur_ptr = cur_next;
4351 cur_end = cur_ptr + cur_hdr->len;
4352 cur_next = cur_end + cur_hdr->cr + 1;
4353
4354 /* We have one full header between cur_ptr and cur_end, and the
4355 * next header starts at cur_next. We're only interested in
4356 * "Cookie:" headers.
4357 */
4358
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4359 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
4360 if (val) {
4361 if ((cur_end - (cur_ptr + val) >= 8) &&
4362 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
4363 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
4364 return;
4365 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4366 }
4367
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4368 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
4369 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4370 continue;
4371
4372 /* OK, right now we know we have a cache-control header at cur_ptr */
4373
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4374 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4375
4376 if (p1 >= cur_end) /* no more info */
4377 continue;
4378
4379 /* p1 is at the beginning of the value */
4380 p2 = p1;
4381
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4382 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4383 p2++;
4384
4385 /* we have a complete value between p1 and p2 */
4386 if (p2 < cur_end && *p2 == '=') {
4387 /* we have something of the form no-cache="set-cookie" */
4388 if ((cur_end - p1 >= 21) &&
4389 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
4390 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4391 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4392 continue;
4393 }
4394
4395 /* OK, so we know that either p2 points to the end of string or to a comma */
4396 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
4397 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
4398 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
4399 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4400 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4401 return;
4402 }
4403
4404 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4405 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4406 continue;
4407 }
4408 }
4409}
4410
4411
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4412/*
4413 * Try to retrieve a known appsession in the URI, then the associated server.
4414 * If the server is found, it's assigned to the session.
4415 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4416void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4417{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4418 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4419 appsess *asession_temp = NULL;
4420 appsess local_asession;
4421 char *request_line;
4422
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4423 if (t->be->appsession_name == NULL ||
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]4424 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST) ||
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4425 (request_line = memchr(begin, ';', len)) == NULL ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4426 ((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]4427 return;
4428
4429 /* skip ';' */
4430 request_line++;
4431
4432 /* look if we have a jsessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4433 if (strncasecmp(request_line, t->be->appsession_name, t->be->appsession_name_len) != 0)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4434 return;
4435
4436 /* skip jsessionid= */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4437 request_line += t->be->appsession_name_len + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4438
4439 /* First try if we already have an appsession */
4440 asession_temp = &local_asession;
4441
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4442 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4443 Alert("Not enough memory process_cli():asession_temp->sessid:calloc().\n");
4444 send_log(t->be, LOG_ALERT, "Not enough Memory process_cli():asession_temp->sessid:calloc().\n");
4445 return;
4446 }
4447
4448 /* Copy the sessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4449 memcpy(asession_temp->sessid, request_line, t->be->appsession_len);
4450 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4451 asession_temp->serverid = NULL;
4452
4453 /* only do insert, if lookup fails */
Ryan Warnick6d0b1fa2008-02-17 11:24:35 +0100[diff] [blame]4454 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
4455 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4456 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4457 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4458 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4459 Alert("Not enough memory process_cli():asession:calloc().\n");
4460 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4461 return;
4462 }
4463 asession_temp->sessid = local_asession.sessid;
4464 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4465 asession_temp->request_count=0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4466 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4467 }
4468 else {
4469 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4470 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4471 }
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4472
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]4473 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4474 asession_temp->request_count++;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4475
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4476#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4477 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4478 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4479#endif
4480 if (asession_temp->serverid == NULL) {
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4481 /* TODO redispatch request */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4482 Alert("Found Application Session without matching server.\n");
4483 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4484 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4485 while (srv) {
4486 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4487 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4488 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4489 txn->flags &= ~TX_CK_MASK;
4490 txn->flags |= TX_CK_VALID;
4491 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4492 t->srv = srv;
4493 break;
4494 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4495 txn->flags &= ~TX_CK_MASK;
4496 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4497 }
4498 }
4499 srv = srv->next;
4500 }
4501 }
4502}
4503
4504
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4505/*
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4506 * In a GET or HEAD request, check if the requested URI matches the stats uri
4507 * for the current backend, and if an authorization has been passed and is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4508 *
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4509 * 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]4510 * 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]4511 * produce_content() can be called to start sending data.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4512 *
4513 * Returns 1 if the session's state changes, otherwise 0.
4514 */
4515int stats_check_uri_auth(struct session *t, struct proxy *backend)
4516{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4517 struct http_txn *txn = &t->txn;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4518 struct uri_auth *uri_auth = backend->uri_auth;
4519 struct user_auth *user;
4520 int authenticated, cur_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4521 char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4522
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4523 memset(&t->data_ctx.stats, 0, sizeof(t->data_ctx.stats));
4524
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4525 /* check URI size */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4526 if (uri_auth->uri_len > txn->req.sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4527 return 0;
4528
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4529 h = t->req->data + txn->req.sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4530
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4531 /* the URI is in h */
4532 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4533 return 0;
4534
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4535 h += uri_auth->uri_len;
4536 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 3) {
4537 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4538 t->data_ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4539 break;
4540 }
4541 h++;
4542 }
4543
4544 if (uri_auth->refresh) {
4545 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4546 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 10) {
4547 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4548 t->data_ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4549 break;
4550 }
4551 h++;
4552 }
4553 }
4554
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]4555 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4556 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 4) {
4557 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4558 t->data_ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]4559 break;
4560 }
4561 h++;
4562 }
4563
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4564 t->data_ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
4565
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4566 /* we are in front of a interceptable URI. Let's check
4567 * if there's an authentication and if it's valid.
4568 */
4569 user = uri_auth->users;
4570 if (!user) {
4571 /* no user auth required, it's OK */
4572 authenticated = 1;
4573 } else {
4574 authenticated = 0;
4575
4576 /* a user list is defined, we have to check.
4577 * skip 21 chars for "Authorization: Basic ".
4578 */
4579
4580 /* FIXME: this should move to an earlier place */
4581 cur_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4582 h = t->req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
4583 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4584 int len = txn->hdr_idx.v[cur_idx].len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4585 if (len > 14 &&
4586 !strncasecmp("Authorization:", h, 14)) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4587 txn->auth_hdr.str = h;
4588 txn->auth_hdr.len = len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4589 break;
4590 }
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4591 h += len + txn->hdr_idx.v[cur_idx].cr + 1;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4592 }
4593
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4594 if (txn->auth_hdr.len < 21 ||
4595 memcmp(txn->auth_hdr.str + 14, " Basic ", 7))
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4596 user = NULL;
4597
4598 while (user) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4599 if ((txn->auth_hdr.len == user->user_len + 14 + 7)
4600 && !memcmp(txn->auth_hdr.str + 14 + 7,
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4601 user->user_pwd, user->user_len)) {
4602 authenticated = 1;
4603 break;
4604 }
4605 user = user->next;
4606 }
4607 }
4608
4609 if (!authenticated) {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4610 struct chunk msg;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4611
4612 /* no need to go further */
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]4613 sprintf(trash, HTTP_401_fmt, uri_auth->auth_realm);
4614 chunk_initlen(&msg, trash, sizeof(trash), strlen(trash));
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4615 txn->status = 401;
Willy Tarreaudded32d2008-11-30 19:48:07 +0100[diff] [blame]4616 stream_int_retnclose(t->req->prod, &msg);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]4617 t->req->analysers = 0;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4618 if (!(t->flags & SN_ERR_MASK))
4619 t->flags |= SN_ERR_PRXCOND;
4620 if (!(t->flags & SN_FINST_MASK))
4621 t->flags |= SN_FINST_R;
4622 return 1;
4623 }
4624
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4625 /* The request is valid, the user is authenticated. Let's start sending
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4626 * data.
4627 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]4628 buffer_dont_connect(t->req);
Willy Tarreau72b179a2008-08-28 16:01:32 +0200[diff] [blame]4629 buffer_shutw_now(t->req);
4630 buffer_shutr_now(t->rep);
Willy Tarreau2f9cc8a2009-09-24 22:22:18 +0200[diff] [blame]4631 stream_int_retnclose(t->rep->cons, NULL);
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]4632 t->logs.tv_request = now;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4633 t->data_source = DATA_SRC_STATS;
4634 t->data_state = DATA_ST_INIT;
Willy Tarreau91e99932008-06-30 07:51:00 +0200[diff] [blame]4635 t->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau01bf8672008-12-07 18:03:29 +0100[diff] [blame]4636 buffer_install_hijacker(t, t->rep, produce_content);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4637 return 1;
4638}
4639
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4640/*
4641 * Capture a bad request or response and archive it in the proxy's structure.
4642 */
4643void http_capture_bad_message(struct error_snapshot *es, struct session *s,
4644 struct buffer *buf, struct http_msg *msg,
4645 struct proxy *other_end)
4646{
Willy Tarreau2df8d712009-05-01 11:33:17 +0200[diff] [blame]4647 es->len = buf->r - (buf->data + msg->som);
4648 memcpy(es->buf, buf->data + msg->som, MIN(es->len, sizeof(es->buf)));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4649 if (msg->err_pos >= 0)
Willy Tarreau2df8d712009-05-01 11:33:17 +0200[diff] [blame]4650 es->pos = msg->err_pos - msg->som;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4651 else
Willy Tarreau2df8d712009-05-01 11:33:17 +0200[diff] [blame]4652 es->pos = buf->lr - (buf->data + msg->som);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4653 es->when = date; // user-visible date
4654 es->sid = s->uniq_id;
4655 es->srv = s->srv;
4656 es->oe = other_end;
4657 es->src = s->cli_addr;
4658}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4659
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4660/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4661 * Print a debug line with a header
4662 */
4663void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
4664{
4665 int len, max;
4666 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4667 dir, (unsigned short)t->req->prod->fd, (unsigned short)t->req->cons->fd);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4668 max = end - start;
4669 UBOUND(max, sizeof(trash) - len - 1);
4670 len += strlcpy2(trash + len, start, max + 1);
4671 trash[len++] = '\n';
4672 write(1, trash, len);
4673}
4674
4675
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4676/************************************************************************/
4677/* The code below is dedicated to ACL parsing and matching */
4678/************************************************************************/
4679
4680
4681
4682
4683/* 1. Check on METHOD
4684 * We use the pre-parsed method if it is known, and store its number as an
4685 * integer. If it is unknown, we use the pointer and the length.
4686 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4687static int acl_parse_meth(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4688{
4689 int len, meth;
4690
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4691 len = strlen(*text);
4692 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4693
4694 pattern->val.i = meth;
4695 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4696 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4697 if (!pattern->ptr.str)
4698 return 0;
4699 pattern->len = len;
4700 }
4701 return 1;
4702}
4703
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4704static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4705acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, int dir,
4706 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4707{
4708 int meth;
4709 struct http_txn *txn = l7;
4710
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4711 if (!txn)
4712 return 0;
4713
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4714 if (txn->req.msg_state != HTTP_MSG_BODY)
4715 return 0;
4716
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4717 meth = txn->meth;
4718 test->i = meth;
4719 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4720 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4721 /* ensure the indexes are not affected */
4722 return 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4723 test->len = txn->req.sl.rq.m_l;
4724 test->ptr = txn->req.sol;
4725 }
4726 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4727 return 1;
4728}
4729
4730static int acl_match_meth(struct acl_test *test, struct acl_pattern *pattern)
4731{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4732 int icase;
4733
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4734 if (test->i != pattern->val.i)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4735 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4736
4737 if (test->i != HTTP_METH_OTHER)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4738 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4739
4740 /* Other method, we must compare the strings */
4741 if (pattern->len != test->len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4742 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4743
4744 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
4745 if ((icase && strncasecmp(pattern->ptr.str, test->ptr, test->len) != 0) ||
4746 (!icase && strncmp(pattern->ptr.str, test->ptr, test->len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4747 return ACL_PAT_FAIL;
4748 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4749}
4750
4751/* 2. Check on Request/Status Version
4752 * We simply compare strings here.
4753 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4754static int acl_parse_ver(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4755{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4756 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4757 if (!pattern->ptr.str)
4758 return 0;
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4759 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4760 return 1;
4761}
4762
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4763static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4764acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, int dir,
4765 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4766{
4767 struct http_txn *txn = l7;
4768 char *ptr;
4769 int len;
4770
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4771 if (!txn)
4772 return 0;
4773
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4774 if (txn->req.msg_state != HTTP_MSG_BODY)
4775 return 0;
4776
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4777 len = txn->req.sl.rq.v_l;
4778 ptr = txn->req.sol + txn->req.sl.rq.v - txn->req.som;
4779
4780 while ((len-- > 0) && (*ptr++ != '/'));
4781 if (len <= 0)
4782 return 0;
4783
4784 test->ptr = ptr;
4785 test->len = len;
4786
4787 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4788 return 1;
4789}
4790
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4791static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4792acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, int dir,
4793 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4794{
4795 struct http_txn *txn = l7;
4796 char *ptr;
4797 int len;
4798
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4799 if (!txn)
4800 return 0;
4801
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4802 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4803 return 0;
4804
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4805 len = txn->rsp.sl.st.v_l;
4806 ptr = txn->rsp.sol;
4807
4808 while ((len-- > 0) && (*ptr++ != '/'));
4809 if (len <= 0)
4810 return 0;
4811
4812 test->ptr = ptr;
4813 test->len = len;
4814
4815 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4816 return 1;
4817}
4818
4819/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4820static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4821acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, int dir,
4822 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4823{
4824 struct http_txn *txn = l7;
4825 char *ptr;
4826 int len;
4827
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4828 if (!txn)
4829 return 0;
4830
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4831 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4832 return 0;
4833
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4834 len = txn->rsp.sl.st.c_l;
4835 ptr = txn->rsp.sol + txn->rsp.sl.st.c - txn->rsp.som;
4836
4837 test->i = __strl2ui(ptr, len);
4838 test->flags = ACL_TEST_F_VOL_1ST;
4839 return 1;
4840}
4841
4842/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4843static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4844acl_fetch_url(struct proxy *px, struct session *l4, void *l7, int dir,
4845 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4846{
4847 struct http_txn *txn = l7;
4848
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4849 if (!txn)
4850 return 0;
4851
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4852 if (txn->req.msg_state != HTTP_MSG_BODY)
4853 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4854
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4855 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4856 /* ensure the indexes are not affected */
4857 return 0;
4858
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4859 test->len = txn->req.sl.rq.u_l;
4860 test->ptr = txn->req.sol + txn->req.sl.rq.u;
4861
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]4862 /* we do not need to set READ_ONLY because the data is in a buffer */
4863 test->flags = ACL_TEST_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4864 return 1;
4865}
4866
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4867static int
4868acl_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, int dir,
4869 struct acl_expr *expr, struct acl_test *test)
4870{
4871 struct http_txn *txn = l7;
4872
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4873 if (!txn)
4874 return 0;
4875
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4876 if (txn->req.msg_state != HTTP_MSG_BODY)
4877 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4878
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4879 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4880 /* ensure the indexes are not affected */
4881 return 0;
4882
4883 /* Parse HTTP request */
4884 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
4885 test->ptr = (void *)&((struct sockaddr_in *)&l4->srv_addr)->sin_addr;
4886 test->i = AF_INET;
4887
4888 /*
4889 * If we are parsing url in frontend space, we prepare backend stage
4890 * to not parse again the same url ! optimization lazyness...
4891 */
4892 if (px->options & PR_O_HTTP_PROXY)
4893 l4->flags |= SN_ADDR_SET;
4894
4895 test->flags = ACL_TEST_F_READ_ONLY;
4896 return 1;
4897}
4898
4899static int
4900acl_fetch_url_port(struct proxy *px, struct session *l4, void *l7, int dir,
4901 struct acl_expr *expr, struct acl_test *test)
4902{
4903 struct http_txn *txn = l7;
4904
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4905 if (!txn)
4906 return 0;
4907
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4908 if (txn->req.msg_state != HTTP_MSG_BODY)
4909 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4910
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4911 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4912 /* ensure the indexes are not affected */
4913 return 0;
4914
4915 /* Same optimization as url_ip */
4916 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
4917 test->i = ntohs(((struct sockaddr_in *)&l4->srv_addr)->sin_port);
4918
4919 if (px->options & PR_O_HTTP_PROXY)
4920 l4->flags |= SN_ADDR_SET;
4921
4922 test->flags = ACL_TEST_F_READ_ONLY;
4923 return 1;
4924}
4925
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4926/* 5. Check on HTTP header. A pointer to the beginning of the value is returned.
4927 * This generic function is used by both acl_fetch_chdr() and acl_fetch_shdr().
4928 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4929static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4930acl_fetch_hdr(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4931 struct acl_expr *expr, struct acl_test *test)
4932{
4933 struct http_txn *txn = l7;
4934 struct hdr_idx *idx = &txn->hdr_idx;
4935 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4936
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4937 if (!txn)
4938 return 0;
4939
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4940 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
4941 /* search for header from the beginning */
4942 ctx->idx = 0;
4943
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4944 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
4945 test->flags |= ACL_TEST_F_FETCH_MORE;
4946 test->flags |= ACL_TEST_F_VOL_HDR;
4947 test->len = ctx->vlen;
4948 test->ptr = (char *)ctx->line + ctx->val;
4949 return 1;
4950 }
4951
4952 test->flags &= ~ACL_TEST_F_FETCH_MORE;
4953 test->flags |= ACL_TEST_F_VOL_HDR;
4954 return 0;
4955}
4956
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4957static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4958acl_fetch_chdr(struct proxy *px, struct session *l4, void *l7, int dir,
4959 struct acl_expr *expr, struct acl_test *test)
4960{
4961 struct http_txn *txn = l7;
4962
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4963 if (!txn)
4964 return 0;
4965
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4966 if (txn->req.msg_state != HTTP_MSG_BODY)
4967 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4968
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4969 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4970 /* ensure the indexes are not affected */
4971 return 0;
4972
4973 return acl_fetch_hdr(px, l4, txn, txn->req.sol, expr, test);
4974}
4975
4976static int
4977acl_fetch_shdr(struct proxy *px, struct session *l4, void *l7, int dir,
4978 struct acl_expr *expr, struct acl_test *test)
4979{
4980 struct http_txn *txn = l7;
4981
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4982 if (!txn)
4983 return 0;
4984
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4985 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4986 return 0;
4987
4988 return acl_fetch_hdr(px, l4, txn, txn->rsp.sol, expr, test);
4989}
4990
4991/* 6. Check on HTTP header count. The number of occurrences is returned.
4992 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
4993 */
4994static int
4995acl_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4996 struct acl_expr *expr, struct acl_test *test)
4997{
4998 struct http_txn *txn = l7;
4999 struct hdr_idx *idx = &txn->hdr_idx;
5000 struct hdr_ctx ctx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5001 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5002
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5003 if (!txn)
5004 return 0;
5005
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5006 ctx.idx = 0;
5007 cnt = 0;
5008 while (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, &ctx))
5009 cnt++;
5010
5011 test->i = cnt;
5012 test->flags = ACL_TEST_F_VOL_HDR;
5013 return 1;
5014}
5015
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5016static int
5017acl_fetch_chdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5018 struct acl_expr *expr, struct acl_test *test)
5019{
5020 struct http_txn *txn = l7;
5021
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5022 if (!txn)
5023 return 0;
5024
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5025 if (txn->req.msg_state != HTTP_MSG_BODY)
5026 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5027
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5028 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5029 /* ensure the indexes are not affected */
5030 return 0;
5031
5032 return acl_fetch_hdr_cnt(px, l4, txn, txn->req.sol, expr, test);
5033}
5034
5035static int
5036acl_fetch_shdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5037 struct acl_expr *expr, struct acl_test *test)
5038{
5039 struct http_txn *txn = l7;
5040
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5041 if (!txn)
5042 return 0;
5043
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5044 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5045 return 0;
5046
5047 return acl_fetch_hdr_cnt(px, l4, txn, txn->rsp.sol, expr, test);
5048}
5049
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5050/* 7. Check on HTTP header's integer value. The integer value is returned.
5051 * FIXME: the type is 'int', it may not be appropriate for everything.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5052 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5053 */
5054static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5055acl_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5056 struct acl_expr *expr, struct acl_test *test)
5057{
5058 struct http_txn *txn = l7;
5059 struct hdr_idx *idx = &txn->hdr_idx;
5060 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5061
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5062 if (!txn)
5063 return 0;
5064
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5065 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5066 /* search for header from the beginning */
5067 ctx->idx = 0;
5068
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5069 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5070 test->flags |= ACL_TEST_F_FETCH_MORE;
5071 test->flags |= ACL_TEST_F_VOL_HDR;
5072 test->i = strl2ic((char *)ctx->line + ctx->val, ctx->vlen);
5073 return 1;
5074 }
5075
5076 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5077 test->flags |= ACL_TEST_F_VOL_HDR;
5078 return 0;
5079}
5080
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5081static int
5082acl_fetch_chdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5083 struct acl_expr *expr, struct acl_test *test)
5084{
5085 struct http_txn *txn = l7;
5086
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5087 if (!txn)
5088 return 0;
5089
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5090 if (txn->req.msg_state != HTTP_MSG_BODY)
5091 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5092
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5093 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5094 /* ensure the indexes are not affected */
5095 return 0;
5096
5097 return acl_fetch_hdr_val(px, l4, txn, txn->req.sol, expr, test);
5098}
5099
5100static int
5101acl_fetch_shdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5102 struct acl_expr *expr, struct acl_test *test)
5103{
5104 struct http_txn *txn = l7;
5105
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5106 if (!txn)
5107 return 0;
5108
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5109 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5110 return 0;
5111
5112 return acl_fetch_hdr_val(px, l4, txn, txn->rsp.sol, expr, test);
5113}
5114
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]5115/* 7. Check on HTTP header's IPv4 address value. The IPv4 address is returned.
5116 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
5117 */
5118static int
5119acl_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, char *sol,
5120 struct acl_expr *expr, struct acl_test *test)
5121{
5122 struct http_txn *txn = l7;
5123 struct hdr_idx *idx = &txn->hdr_idx;
5124 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
5125
5126 if (!txn)
5127 return 0;
5128
5129 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5130 /* search for header from the beginning */
5131 ctx->idx = 0;
5132
5133 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5134 test->flags |= ACL_TEST_F_FETCH_MORE;
5135 test->flags |= ACL_TEST_F_VOL_HDR;
5136 /* Same optimization as url_ip */
5137 memset(&l4->srv_addr.sin_addr, 0, sizeof(l4->srv_addr.sin_addr));
5138 url2ip((char *)ctx->line + ctx->val, &l4->srv_addr.sin_addr);
5139 test->ptr = (void *)&l4->srv_addr.sin_addr;
5140 test->i = AF_INET;
5141 return 1;
5142 }
5143
5144 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5145 test->flags |= ACL_TEST_F_VOL_HDR;
5146 return 0;
5147}
5148
5149static int
5150acl_fetch_chdr_ip(struct proxy *px, struct session *l4, void *l7, int dir,
5151 struct acl_expr *expr, struct acl_test *test)
5152{
5153 struct http_txn *txn = l7;
5154
5155 if (!txn)
5156 return 0;
5157
5158 if (txn->req.msg_state != HTTP_MSG_BODY)
5159 return 0;
5160
5161 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5162 /* ensure the indexes are not affected */
5163 return 0;
5164
5165 return acl_fetch_hdr_ip(px, l4, txn, txn->req.sol, expr, test);
5166}
5167
5168static int
5169acl_fetch_shdr_ip(struct proxy *px, struct session *l4, void *l7, int dir,
5170 struct acl_expr *expr, struct acl_test *test)
5171{
5172 struct http_txn *txn = l7;
5173
5174 if (!txn)
5175 return 0;
5176
5177 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5178 return 0;
5179
5180 return acl_fetch_hdr_ip(px, l4, txn, txn->rsp.sol, expr, test);
5181}
5182
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5183/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
5184 * the first '/' after the possible hostname, and ends before the possible '?'.
5185 */
5186static int
5187acl_fetch_path(struct proxy *px, struct session *l4, void *l7, int dir,
5188 struct acl_expr *expr, struct acl_test *test)
5189{
5190 struct http_txn *txn = l7;
5191 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5192
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5193 if (!txn)
5194 return 0;
5195
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5196 if (txn->req.msg_state != HTTP_MSG_BODY)
5197 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5198
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5199 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5200 /* ensure the indexes are not affected */
5201 return 0;
5202
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5203 end = txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
5204 ptr = http_get_path(txn);
5205 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5206 return 0;
5207
5208 /* OK, we got the '/' ! */
5209 test->ptr = ptr;
5210
5211 while (ptr < end && *ptr != '?')
5212 ptr++;
5213
5214 test->len = ptr - test->ptr;
5215
5216 /* we do not need to set READ_ONLY because the data is in a buffer */
5217 test->flags = ACL_TEST_F_VOL_1ST;
5218 return 1;
5219}
5220
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]5221static int
5222acl_fetch_proto_http(struct proxy *px, struct session *s, void *l7, int dir,
5223 struct acl_expr *expr, struct acl_test *test)
5224{
5225 struct buffer *req = s->req;
5226 struct http_txn *txn = &s->txn;
5227 struct http_msg *msg = &txn->req;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5228
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]5229 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
5230 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
5231 */
5232
5233 if (!s || !req)
5234 return 0;
5235
5236 if (unlikely(msg->msg_state == HTTP_MSG_BODY)) {
5237 /* Already decoded as OK */
5238 test->flags |= ACL_TEST_F_SET_RES_PASS;
5239 return 1;
5240 }
5241
5242 /* Try to decode HTTP request */
5243 if (likely(req->lr < req->r))
5244 http_msg_analyzer(req, msg, &txn->hdr_idx);
5245
5246 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
5247 if ((msg->msg_state == HTTP_MSG_ERROR) || (req->flags & BF_FULL)) {
5248 test->flags |= ACL_TEST_F_SET_RES_FAIL;
5249 return 1;
5250 }
5251 /* wait for final state */
5252 test->flags |= ACL_TEST_F_MAY_CHANGE;
5253 return 0;
5254 }
5255
5256 /* OK we got a valid HTTP request. We have some minor preparation to
5257 * perform so that further checks can rely on HTTP tests.
5258 */
5259 msg->sol = req->data + msg->som;
5260 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
5261 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
5262 s->flags |= SN_REDIRECTABLE;
5263
5264 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(req, msg, txn)) {
5265 test->flags |= ACL_TEST_F_SET_RES_FAIL;
5266 return 1;
5267 }
5268
5269 test->flags |= ACL_TEST_F_SET_RES_PASS;
5270 return 1;
5271}
5272
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5273
5274/************************************************************************/
5275/* All supported keywords must be declared here. */
5276/************************************************************************/
5277
5278/* Note: must not be declared <const> as its list will be overwritten */
5279static struct acl_kw_list acl_kws = {{ },{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]5280 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT },
5281
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5282 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT },
5283 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5284 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE },
5285 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5286
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5287 { "url", acl_parse_str, acl_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5288 { "url_beg", acl_parse_str, acl_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
5289 { "url_end", acl_parse_str, acl_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE },
5290 { "url_sub", acl_parse_str, acl_fetch_url, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
5291 { "url_dir", acl_parse_str, acl_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
5292 { "url_dom", acl_parse_str, acl_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
5293 { "url_reg", acl_parse_reg, acl_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
5294 { "url_ip", acl_parse_ip, acl_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE },
5295 { "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]5296
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5297 /* note: we should set hdr* to use ACL_USE_HDR_VOLATILE, and chdr* to use L7REQ_VOLATILE */
5298 { "hdr", acl_parse_str, acl_fetch_chdr, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5299 { "hdr_reg", acl_parse_reg, acl_fetch_chdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
5300 { "hdr_beg", acl_parse_str, acl_fetch_chdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
5301 { "hdr_end", acl_parse_str, acl_fetch_chdr, acl_match_end, ACL_USE_L7REQ_VOLATILE },
5302 { "hdr_sub", acl_parse_str, acl_fetch_chdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
5303 { "hdr_dir", acl_parse_str, acl_fetch_chdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
5304 { "hdr_dom", acl_parse_str, acl_fetch_chdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
5305 { "hdr_cnt", acl_parse_int, acl_fetch_chdr_cnt,acl_match_int, ACL_USE_L7REQ_VOLATILE },
5306 { "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]5307 { "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]5308
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5309 { "shdr", acl_parse_str, acl_fetch_shdr, acl_match_str, ACL_USE_L7RTR_VOLATILE },
5310 { "shdr_reg", acl_parse_reg, acl_fetch_shdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE },
5311 { "shdr_beg", acl_parse_str, acl_fetch_shdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE },
5312 { "shdr_end", acl_parse_str, acl_fetch_shdr, acl_match_end, ACL_USE_L7RTR_VOLATILE },
5313 { "shdr_sub", acl_parse_str, acl_fetch_shdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE },
5314 { "shdr_dir", acl_parse_str, acl_fetch_shdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE },
5315 { "shdr_dom", acl_parse_str, acl_fetch_shdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE },
5316 { "shdr_cnt", acl_parse_int, acl_fetch_shdr_cnt,acl_match_int, ACL_USE_L7RTR_VOLATILE },
5317 { "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]5318 { "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]5319
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5320 { "path", acl_parse_str, acl_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5321 { "path_reg", acl_parse_reg, acl_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
5322 { "path_beg", acl_parse_str, acl_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
5323 { "path_end", acl_parse_str, acl_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE },
5324 { "path_sub", acl_parse_str, acl_fetch_path, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
5325 { "path_dir", acl_parse_str, acl_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
5326 { "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]5327
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]5328 { NULL, NULL, NULL, NULL },
5329
5330#if 0
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5331 { "line", acl_parse_str, acl_fetch_line, acl_match_str },
5332 { "line_reg", acl_parse_reg, acl_fetch_line, acl_match_reg },
5333 { "line_beg", acl_parse_str, acl_fetch_line, acl_match_beg },
5334 { "line_end", acl_parse_str, acl_fetch_line, acl_match_end },
5335 { "line_sub", acl_parse_str, acl_fetch_line, acl_match_sub },
5336 { "line_dir", acl_parse_str, acl_fetch_line, acl_match_dir },
5337 { "line_dom", acl_parse_str, acl_fetch_line, acl_match_dom },
5338
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5339 { "cook", acl_parse_str, acl_fetch_cook, acl_match_str },
5340 { "cook_reg", acl_parse_reg, acl_fetch_cook, acl_match_reg },
5341 { "cook_beg", acl_parse_str, acl_fetch_cook, acl_match_beg },
5342 { "cook_end", acl_parse_str, acl_fetch_cook, acl_match_end },
5343 { "cook_sub", acl_parse_str, acl_fetch_cook, acl_match_sub },
5344 { "cook_dir", acl_parse_str, acl_fetch_cook, acl_match_dir },
5345 { "cook_dom", acl_parse_str, acl_fetch_cook, acl_match_dom },
5346 { "cook_pst", acl_parse_none, acl_fetch_cook, acl_match_pst },
5347
5348 { "auth_user", acl_parse_str, acl_fetch_user, acl_match_str },
5349 { "auth_regex", acl_parse_reg, acl_fetch_user, acl_match_reg },
5350 { "auth_clear", acl_parse_str, acl_fetch_auth, acl_match_str },
5351 { "auth_md5", acl_parse_str, acl_fetch_auth, acl_match_md5 },
5352 { NULL, NULL, NULL, NULL },
5353#endif
5354}};
5355
5356
5357__attribute__((constructor))
5358static void __http_protocol_init(void)
5359{
5360 acl_register_keywords(&acl_kws);
5361}
5362
5363
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5364/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5365 * Local variables:
5366 * c-indent-level: 8
5367 * c-basic-offset: 8
5368 * End:
5369 */