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git01.mediatek.com / haproxy / e5cc072e5dcd4afa81450e8b61c09d72ced548b1 / . / src / proto_http.c
blob: 23007384310f33376d2c2203dbd42d286389f882 [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;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]1846
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]1847 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]1848 if (s->listener->counters)
1849 s->listener->counters->failed_req++;
1850
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1851 if (!(s->flags & SN_ERR_MASK))
1852 s->flags |= SN_ERR_CLICL;
1853 if (!(s->flags & SN_FINST_MASK))
1854 s->flags |= SN_FINST_R;
1855 return 0;
1856 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]1857
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1858 /* 3: has the read timeout expired ? */
1859 else if (req->flags & BF_READ_TIMEOUT || tick_is_expired(req->analyse_exp, now_ms)) {
1860 /* read timeout : give up with an error message. */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]1861 if (msg->err_pos >= 0)
1862 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1863 txn->status = 408;
1864 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_408));
1865 msg->msg_state = HTTP_MSG_ERROR;
1866 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]1867
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]1868 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]1869 if (s->listener->counters)
1870 s->listener->counters->failed_req++;
1871
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1872 if (!(s->flags & SN_ERR_MASK))
1873 s->flags |= SN_ERR_CLITO;
1874 if (!(s->flags & SN_FINST_MASK))
1875 s->flags |= SN_FINST_R;
1876 return 0;
1877 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1878
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1879 /* 4: have we encountered a close ? */
1880 else if (req->flags & BF_SHUTR) {
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]1881 if (msg->err_pos >= 0)
1882 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1883 txn->status = 400;
1884 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
1885 msg->msg_state = HTTP_MSG_ERROR;
1886 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]1887
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]1888 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]1889 if (s->listener->counters)
1890 s->listener->counters->failed_req++;
1891
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1892 if (!(s->flags & SN_ERR_MASK))
1893 s->flags |= SN_ERR_CLICL;
1894 if (!(s->flags & SN_FINST_MASK))
1895 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]1896 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1897 }
1898
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]1899 buffer_dont_connect(req);
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]1900 req->flags |= BF_READ_DONTWAIT; /* try to get back here ASAP */
1901
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1902 /* just set the request timeout once at the beginning of the request */
1903 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]1904 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1905
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1906 /* we're not ready yet */
1907 return 0;
1908 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1909
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1910 /* OK now we have a complete HTTP request with indexed headers. Let's
1911 * complete the request parsing by setting a few fields we will need
1912 * later.
1913 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1914
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1915 /* Maybe we found in invalid header name while we were configured not
1916 * to block on that, so we have to capture it now.
1917 */
1918 if (unlikely(msg->err_pos >= 0))
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]1919 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
1920
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1921 /* ensure we keep this pointer to the beginning of the message */
1922 msg->sol = req->data + msg->som;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1923
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1924 /*
1925 * 1: identify the method
1926 */
1927 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
1928
1929 /* we can make use of server redirect on GET and HEAD */
1930 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
1931 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]1932
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1933 /*
1934 * 2: check if the URI matches the monitor_uri.
1935 * We have to do this for every request which gets in, because
1936 * the monitor-uri is defined by the frontend.
1937 */
1938 if (unlikely((s->fe->monitor_uri_len != 0) &&
1939 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
1940 !memcmp(&req->data[msg->sl.rq.u],
1941 s->fe->monitor_uri,
1942 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1943 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1944 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1945 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1946 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1947
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1948 s->flags |= SN_MONITOR;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1949
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1950 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1951 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
1952 int ret = acl_exec_cond(cond, s->fe, s, txn, ACL_DIR_REQ);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1953
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1954 ret = acl_pass(ret);
1955 if (cond->pol == ACL_COND_UNLESS)
1956 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1957
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1958 if (ret) {
1959 /* we fail this request, let's return 503 service unavail */
1960 txn->status = 503;
1961 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_503));
1962 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1963 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1964 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]1965
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1966 /* nothing to fail, let's reply normaly */
1967 txn->status = 200;
1968 stream_int_retnclose(req->prod, &http_200_chunk);
1969 goto return_prx_cond;
1970 }
1971
1972 /*
1973 * 3: Maybe we have to copy the original REQURI for the logs ?
1974 * Note: we cannot log anymore if the request has been
1975 * classified as invalid.
1976 */
1977 if (unlikely(s->logs.logwait & LW_REQ)) {
1978 /* we have a complete HTTP request that we must log */
1979 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
1980 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1981
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1982 if (urilen >= REQURI_LEN)
1983 urilen = REQURI_LEN - 1;
1984 memcpy(txn->uri, &req->data[msg->som], urilen);
1985 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1986
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1987 if (!(s->logs.logwait &= ~LW_REQ))
1988 s->do_log(s);
1989 } else {
1990 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1991 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1992 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1993
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1994 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1995 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(req, msg, txn))
1996 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1997
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1998 /* 5: we may need to capture headers */
1999 if (unlikely((s->logs.logwait & LW_REQHDR) && s->fe->req_cap))
2000 capture_headers(req->data + msg->som, &txn->hdr_idx,
2001 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2002
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2003 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2004 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2005 req->analyse_exp = TICK_ETERNITY;
2006 return 1;
2007
2008 return_bad_req:
2009 /* We centralize bad requests processing here */
2010 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2011 /* we detected a parsing error. We want to archive this request
2012 * in the dedicated proxy area for later troubleshooting.
2013 */
2014 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
2015 }
2016
2017 txn->req.msg_state = HTTP_MSG_ERROR;
2018 txn->status = 400;
2019 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2020
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2021 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2022 if (s->listener->counters)
2023 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2024
2025 return_prx_cond:
2026 if (!(s->flags & SN_ERR_MASK))
2027 s->flags |= SN_ERR_PRXCOND;
2028 if (!(s->flags & SN_FINST_MASK))
2029 s->flags |= SN_FINST_R;
2030
2031 req->analysers = 0;
2032 req->analyse_exp = TICK_ETERNITY;
2033 return 0;
2034}
2035
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2036/* This stream analyser runs all HTTP request processing which is common to
2037 * frontends and backends, which means blocking ACLs, filters, connection-close,
2038 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2039 * 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]2040 * either needs more data or wants to immediately abort the request (eg: deny,
2041 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2042 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2043int 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]2044{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2045 struct http_txn *txn = &s->txn;
2046 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2047 struct acl_cond *cond;
2048 struct redirect_rule *rule;
2049 int cur_idx;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2050
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2051 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
2052 /* we need more data */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2053 buffer_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2054 return 0;
2055 }
2056
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2057 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2058 req->analyse_exp = TICK_ETERNITY;
2059
2060 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
2061 now_ms, __FUNCTION__,
2062 s,
2063 req,
2064 req->rex, req->wex,
2065 req->flags,
2066 req->l,
2067 req->analysers);
2068
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2069 /* first check whether we have some ACLs set to block this request */
2070 list_for_each_entry(cond, &px->block_cond, list) {
2071 int ret = acl_exec_cond(cond, px, s, txn, ACL_DIR_REQ);
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]2072
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2073 ret = acl_pass(ret);
2074 if (cond->pol == ACL_COND_UNLESS)
2075 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]2076
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2077 if (ret) {
2078 txn->status = 403;
2079 /* let's log the request time */
2080 s->logs.tv_request = now;
2081 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_403));
2082 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2083 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2084 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2085
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2086 /* try headers filters */
2087 if (px->req_exp != NULL) {
2088 if (apply_filters_to_request(s, req, px->req_exp) < 0)
2089 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2090
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2091 /* has the request been denied ? */
2092 if (txn->flags & TX_CLDENY) {
2093 /* no need to go further */
2094 txn->status = 403;
2095 /* let's log the request time */
2096 s->logs.tv_request = now;
2097 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_403));
2098 goto return_prx_cond;
2099 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2100
2101 /* When a connection is tarpitted, we use the tarpit timeout,
2102 * which may be the same as the connect timeout if unspecified.
2103 * If unset, then set it to zero because we really want it to
2104 * eventually expire. We build the tarpit as an analyser.
2105 */
2106 if (txn->flags & TX_CLTARPIT) {
2107 buffer_erase(s->req);
2108 /* wipe the request out so that we can drop the connection early
2109 * if the client closes first.
2110 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2111 buffer_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2112 req->analysers = 0; /* remove switching rules etc... */
2113 req->analysers |= AN_REQ_HTTP_TARPIT;
2114 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
2115 if (!req->analyse_exp)
2116 req->analyse_exp = tick_add(now_ms, 0);
2117 return 1;
2118 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2119 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2120
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2121 /* We might have to check for "Connection:" */
2122 if (((s->fe->options | s->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
2123 !(s->flags & SN_CONN_CLOSED)) {
2124 char *cur_ptr, *cur_end, *cur_next;
2125 int old_idx, delta, val;
2126 struct hdr_idx_elem *cur_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2127
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2128 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
2129 old_idx = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2130
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2131 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
2132 cur_hdr = &txn->hdr_idx.v[cur_idx];
2133 cur_ptr = cur_next;
2134 cur_end = cur_ptr + cur_hdr->len;
2135 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2136
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2137 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
2138 if (val) {
2139 /* 3 possibilities :
2140 * - we have already set Connection: close,
2141 * so we remove this line.
2142 * - we have not yet set Connection: close,
2143 * but this line indicates close. We leave
2144 * it untouched and set the flag.
2145 * - we have not yet set Connection: close,
2146 * and this line indicates non-close. We
2147 * replace it.
2148 */
2149 if (s->flags & SN_CONN_CLOSED) {
2150 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
2151 txn->req.eoh += delta;
2152 cur_next += delta;
2153 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
2154 txn->hdr_idx.used--;
2155 cur_hdr->len = 0;
2156 } else {
2157 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
2158 delta = buffer_replace2(req, cur_ptr + val, cur_end,
2159 "close", 5);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2160 cur_next += delta;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2161 cur_hdr->len += delta;
2162 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2163 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2164 s->flags |= SN_CONN_CLOSED;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2165 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2166 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2167 old_idx = cur_idx;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2168 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2169 }
2170 /* add request headers from the rule sets in the same order */
2171 for (cur_idx = 0; cur_idx < px->nb_reqadd; cur_idx++) {
2172 if (unlikely(http_header_add_tail(req,
2173 &txn->req,
2174 &txn->hdr_idx,
2175 px->req_add[cur_idx])) < 0)
2176 goto return_bad_req;
2177 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2178
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2179 /* check if stats URI was requested, and if an auth is needed */
2180 if (px->uri_auth != NULL &&
2181 (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)) {
2182 /* we have to check the URI and auth for this request.
2183 * FIXME!!! that one is rather dangerous, we want to
2184 * make it follow standard rules (eg: clear req->analysers).
2185 */
2186 if (stats_check_uri_auth(s, px)) {
2187 req->analysers = 0;
2188 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2189 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2190 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2191
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2192 /* check whether we have some ACLs set to redirect this request */
2193 list_for_each_entry(rule, &px->redirect_rules, list) {
2194 int ret = acl_exec_cond(rule->cond, px, s, txn, ACL_DIR_REQ);
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2195
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2196 ret = acl_pass(ret);
2197 if (rule->cond->pol == ACL_COND_UNLESS)
2198 ret = !ret;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2199
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2200 if (ret) {
2201 struct chunk rdr = { trash, 0 };
2202 const char *msg_fmt;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2203
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2204 /* build redirect message */
2205 switch(rule->code) {
2206 case 303:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2207 msg_fmt = HTTP_303;
2208 break;
2209 case 301:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2210 msg_fmt = HTTP_301;
2211 break;
2212 case 302:
2213 default:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2214 msg_fmt = HTTP_302;
2215 break;
2216 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2217
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]2218 if (unlikely(chunk_strcpy(&rdr, msg_fmt)))
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2219 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2220
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2221 switch(rule->type) {
2222 case REDIRECT_TYPE_PREFIX: {
2223 const char *path;
2224 int pathlen;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2225
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2226 path = http_get_path(txn);
2227 /* build message using path */
2228 if (path) {
2229 pathlen = txn->req.sl.rq.u_l + (txn->req.sol+txn->req.sl.rq.u) - path;
2230 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
2231 int qs = 0;
2232 while (qs < pathlen) {
2233 if (path[qs] == '?') {
2234 pathlen = qs;
2235 break;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2236 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2237 qs++;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2238 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2239 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2240 } else {
2241 path = "/";
2242 pathlen = 1;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2243 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2244
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]2245 if (rdr.len + rule->rdr_len + pathlen > rdr.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2246 goto return_bad_req;
2247
2248 /* add prefix. Note that if prefix == "/", we don't want to
2249 * add anything, otherwise it makes it hard for the user to
2250 * configure a self-redirection.
2251 */
2252 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2253 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
2254 rdr.len += rule->rdr_len;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2255 }
2256
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2257 /* add path */
2258 memcpy(rdr.str + rdr.len, path, pathlen);
2259 rdr.len += pathlen;
2260 break;
2261 }
2262 case REDIRECT_TYPE_LOCATION:
2263 default:
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]2264 if (rdr.len + rule->rdr_len > rdr.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2265 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2266
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2267 /* add location */
2268 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
2269 rdr.len += rule->rdr_len;
2270 break;
2271 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2272
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2273 if (rule->cookie_len) {
2274 memcpy(rdr.str + rdr.len, "\r\nSet-Cookie: ", 14);
2275 rdr.len += 14;
2276 memcpy(rdr.str + rdr.len, rule->cookie_str, rule->cookie_len);
2277 rdr.len += rule->cookie_len;
2278 memcpy(rdr.str + rdr.len, "\r\n", 2);
2279 rdr.len += 2;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2280 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2281
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2282 /* add end of headers */
2283 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
2284 rdr.len += 4;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2285
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2286 txn->status = rule->code;
2287 /* let's log the request time */
2288 s->logs.tv_request = now;
2289 stream_int_retnclose(req->prod, &rdr);
2290 goto return_prx_cond;
2291 }
2292 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2293
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2294 /* that's OK for us now, let's move on to next analysers */
2295 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2296
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2297 return_bad_req:
2298 /* We centralize bad requests processing here */
2299 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2300 /* we detected a parsing error. We want to archive this request
2301 * in the dedicated proxy area for later troubleshooting.
2302 */
2303 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
2304 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2305
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2306 txn->req.msg_state = HTTP_MSG_ERROR;
2307 txn->status = 400;
2308 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2309
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2310 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2311 if (s->listener->counters)
2312 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]2313
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2314 return_prx_cond:
2315 if (!(s->flags & SN_ERR_MASK))
2316 s->flags |= SN_ERR_PRXCOND;
2317 if (!(s->flags & SN_FINST_MASK))
2318 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]2319
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2320 req->analysers = 0;
2321 req->analyse_exp = TICK_ETERNITY;
2322 return 0;
2323}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2324
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2325/* This function performs all the processing enabled for the current request.
2326 * It returns 1 if the processing can continue on next analysers, or zero if it
2327 * needs more data, encounters an error, or wants to immediately abort the
2328 * request. It relies on buffers flags, and updates s->req->analysers.
2329 */
2330int http_process_request(struct session *s, struct buffer *req, int an_bit)
2331{
2332 struct http_txn *txn = &s->txn;
2333 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2334
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2335 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
2336 /* we need more data */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2337 buffer_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2338 return 0;
2339 }
2340
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2341 req->analysers &= ~an_bit;
2342 req->analyse_exp = TICK_ETERNITY;
2343
2344 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
2345 now_ms, __FUNCTION__,
2346 s,
2347 req,
2348 req->rex, req->wex,
2349 req->flags,
2350 req->l,
2351 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2352
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2353 /*
2354 * Right now, we know that we have processed the entire headers
2355 * and that unwanted requests have been filtered out. We can do
2356 * whatever we want with the remaining request. Also, now we
2357 * may have separate values for ->fe, ->be.
2358 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2359
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2360 /*
2361 * If HTTP PROXY is set we simply get remote server address
2362 * parsing incoming request.
2363 */
2364 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
2365 url2sa(req->data + msg->sl.rq.u, msg->sl.rq.u_l, &s->srv_addr);
2366 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2367
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2368 /*
2369 * 7: the appsession cookie was looked up very early in 1.2,
2370 * so let's do the same now.
2371 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2372
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2373 /* It needs to look into the URI */
2374 if (s->be->appsession_name) {
2375 get_srv_from_appsession(s, &req->data[msg->som], msg->sl.rq.l);
2376 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2377
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2378 /*
2379 * 8: Now we can work with the cookies.
2380 * Note that doing so might move headers in the request, but
2381 * the fields will stay coherent and the URI will not move.
2382 * This should only be performed in the backend.
2383 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]2384 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2385 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
2386 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2387
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2388 /*
2389 * 9: add X-Forwarded-For if either the frontend or the backend
2390 * asks for it.
2391 */
2392 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
2393 if (s->cli_addr.ss_family == AF_INET) {
2394 /* Add an X-Forwarded-For header unless the source IP is
2395 * in the 'except' network range.
2396 */
2397 if ((!s->fe->except_mask.s_addr ||
2398 (((struct sockaddr_in *)&s->cli_addr)->sin_addr.s_addr & s->fe->except_mask.s_addr)
2399 != s->fe->except_net.s_addr) &&
2400 (!s->be->except_mask.s_addr ||
2401 (((struct sockaddr_in *)&s->cli_addr)->sin_addr.s_addr & s->be->except_mask.s_addr)
2402 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2403 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2404 unsigned char *pn;
2405 pn = (unsigned char *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2406
2407 /* Note: we rely on the backend to get the header name to be used for
2408 * x-forwarded-for, because the header is really meant for the backends.
2409 * However, if the backend did not specify any option, we have to rely
2410 * on the frontend's header name.
2411 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2412 if (s->be->fwdfor_hdr_len) {
2413 len = s->be->fwdfor_hdr_len;
2414 memcpy(trash, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2415 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2416 len = s->fe->fwdfor_hdr_len;
2417 memcpy(trash, s->fe->fwdfor_hdr_name, len);
2418 }
2419 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]2420
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2421 if (unlikely(http_header_add_tail2(req, &txn->req,
2422 &txn->hdr_idx, trash, len)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2423 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2424 }
2425 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2426 else if (s->cli_addr.ss_family == AF_INET6) {
2427 /* FIXME: for the sake of completeness, we should also support
2428 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2429 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2430 int len;
2431 char pn[INET6_ADDRSTRLEN];
2432 inet_ntop(AF_INET6,
2433 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
2434 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2435
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2436 /* Note: we rely on the backend to get the header name to be used for
2437 * x-forwarded-for, because the header is really meant for the backends.
2438 * However, if the backend did not specify any option, we have to rely
2439 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2440 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2441 if (s->be->fwdfor_hdr_len) {
2442 len = s->be->fwdfor_hdr_len;
2443 memcpy(trash, s->be->fwdfor_hdr_name, len);
2444 } else {
2445 len = s->fe->fwdfor_hdr_len;
2446 memcpy(trash, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2447 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2448 len += sprintf(trash + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2449
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2450 if (unlikely(http_header_add_tail2(req, &txn->req,
2451 &txn->hdr_idx, trash, len)) < 0)
2452 goto return_bad_req;
2453 }
2454 }
2455
2456 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]2457 * 10: add X-Original-To if either the frontend or the backend
2458 * asks for it.
2459 */
2460 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
2461
2462 /* FIXME: don't know if IPv6 can handle that case too. */
2463 if (s->cli_addr.ss_family == AF_INET) {
2464 /* Add an X-Original-To header unless the destination IP is
2465 * in the 'except' network range.
2466 */
2467 if (!(s->flags & SN_FRT_ADDR_SET))
2468 get_frt_addr(s);
2469
2470 if ((!s->fe->except_mask_to.s_addr ||
2471 (((struct sockaddr_in *)&s->frt_addr)->sin_addr.s_addr & s->fe->except_mask_to.s_addr)
2472 != s->fe->except_to.s_addr) &&
2473 (!s->be->except_mask_to.s_addr ||
2474 (((struct sockaddr_in *)&s->frt_addr)->sin_addr.s_addr & s->be->except_mask_to.s_addr)
2475 != s->be->except_to.s_addr)) {
2476 int len;
2477 unsigned char *pn;
2478 pn = (unsigned char *)&((struct sockaddr_in *)&s->frt_addr)->sin_addr;
2479
2480 /* Note: we rely on the backend to get the header name to be used for
2481 * x-original-to, because the header is really meant for the backends.
2482 * However, if the backend did not specify any option, we have to rely
2483 * on the frontend's header name.
2484 */
2485 if (s->be->orgto_hdr_len) {
2486 len = s->be->orgto_hdr_len;
2487 memcpy(trash, s->be->orgto_hdr_name, len);
2488 } else {
2489 len = s->fe->orgto_hdr_len;
2490 memcpy(trash, s->fe->orgto_hdr_name, len);
2491 }
2492 len += sprintf(trash + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
2493
2494 if (unlikely(http_header_add_tail2(req, &txn->req,
2495 &txn->hdr_idx, trash, len)) < 0)
2496 goto return_bad_req;
2497 }
2498 }
2499 }
2500
2501 /*
2502 * 11: add "Connection: close" if needed and not yet set.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2503 * Note that we do not need to add it in case of HTTP/1.0.
2504 */
2505 if (!(s->flags & SN_CONN_CLOSED) &&
2506 ((s->fe->options | s->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) {
2507 if ((unlikely(msg->sl.rq.v_l != 8) ||
2508 unlikely(req->data[msg->som + msg->sl.rq.v + 7] != '0')) &&
2509 unlikely(http_header_add_tail2(req, &txn->req, &txn->hdr_idx,
2510 "Connection: close", 17)) < 0)
2511 goto return_bad_req;
2512 s->flags |= SN_CONN_CLOSED;
2513 }
2514 /* Before we switch to data, was assignment set in manage_client_side_cookie?
2515 * If not assigned, perhaps we are balancing on url_param, but this is a
2516 * POST; and the parameters are in the body, maybe scan there to find our server.
2517 * (unless headers overflowed the buffer?)
2518 */
2519 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
2520 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
2521 s->be->url_param_post_limit != 0 && !(req->flags & BF_FULL) &&
2522 memchr(msg->sol + msg->sl.rq.u, '?', msg->sl.rq.u_l) == NULL) {
2523 /* are there enough bytes here? total == l || r || rlim ?
2524 * len is unsigned, but eoh is int,
2525 * how many bytes of body have we received?
2526 * eoh is the first empty line of the header
2527 */
2528 /* already established CRLF or LF at eoh, move to start of message, find message length in buffer */
2529 unsigned long len = req->l - (msg->sol[msg->eoh] == '\r' ? msg->eoh + 2 : msg->eoh + 1);
2530
2531 /* If we have HTTP/1.1 and Expect: 100-continue, then abort.
2532 * We can't assume responsibility for the server's decision,
2533 * on this URI and header set. See rfc2616: 14.20, 8.2.3,
2534 * We also can't change our mind later, about which server to choose, so round robin.
2535 */
2536 if ((likely(msg->sl.rq.v_l == 8) && req->data[msg->som + msg->sl.rq.v + 7] == '1')) {
2537 struct hdr_ctx ctx;
2538 ctx.idx = 0;
2539 /* Expect is allowed in 1.1, look for it */
2540 http_find_header2("Expect", 6, msg->sol, &txn->hdr_idx, &ctx);
2541 if (ctx.idx != 0 &&
2542 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0))
2543 /* We can't reliablly stall and wait for data, because of
2544 * .NET clients that don't conform to rfc2616; so, no need for
2545 * the next block to check length expectations.
2546 * We could send 100 status back to the client, but then we need to
2547 * re-write headers, and send the message. And this isn't the right
2548 * place for that action.
2549 * TODO: support Expect elsewhere and delete this block.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2550 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2551 goto end_check_maybe_wait_for_body;
2552 }
2553
2554 if (likely(len > s->be->url_param_post_limit)) {
2555 /* nothing to do, we got enough */
2556 } else {
2557 /* limit implies we are supposed to need this many bytes
2558 * to find the parameter. Let's see how many bytes we can wait for.
2559 */
2560 long long hint = len;
2561 struct hdr_ctx ctx;
2562 ctx.idx = 0;
2563 http_find_header2("Transfer-Encoding", 17, msg->sol, &txn->hdr_idx, &ctx);
2564 if (ctx.idx && ctx.vlen >= 7 && strncasecmp(ctx.line+ctx.val, "chunked", 7) == 0) {
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2565 buffer_dont_connect(req);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2566 req->analysers |= AN_REQ_HTTP_BODY;
2567 }
2568 else {
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2569 ctx.idx = 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2570 http_find_header2("Content-Length", 14, msg->sol, &txn->hdr_idx, &ctx);
2571 /* now if we have a length, we'll take the hint */
2572 if (ctx.idx) {
2573 /* We have Content-Length */
2574 if (strl2llrc(ctx.line+ctx.val,ctx.vlen, &hint))
2575 hint = 0; /* parse failure, untrusted client */
2576 else {
2577 if (hint > 0)
2578 msg->hdr_content_len = hint;
2579 else
2580 hint = 0; /* bad client, sent negative length */
2581 }
2582 }
2583 /* but limited to what we care about, maybe we don't expect any entity data (hint == 0) */
2584 if (s->be->url_param_post_limit < hint)
2585 hint = s->be->url_param_post_limit;
2586 /* now do we really need to buffer more data? */
2587 if (len < hint) {
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2588 buffer_dont_connect(req);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2589 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2590 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2591 /* else... There are no body bytes to wait for */
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2592 }
2593 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2594 }
2595 end_check_maybe_wait_for_body:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2596
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2597 /*************************************************************
2598 * OK, that's finished for the headers. We have done what we *
2599 * could. Let's switch to the DATA state. *
2600 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2601
Willy Tarreaua07a34e2009-08-16 23:27:46 +0200[diff] [blame]2602 buffer_set_rlim(req, req->size); /* no more rewrite needed */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2603 s->logs.tv_request = now;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2604
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2605 /* OK let's go on with the BODY now */
2606 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2607
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2608 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2609 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]2610 /* we detected a parsing error. We want to archive this request
2611 * in the dedicated proxy area for later troubleshooting.
2612 */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2613 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]2614 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2615
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2616 txn->req.msg_state = HTTP_MSG_ERROR;
2617 txn->status = 400;
2618 req->analysers = 0;
2619 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2620
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2621 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2622 if (s->listener->counters)
2623 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2624
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2625 if (!(s->flags & SN_ERR_MASK))
2626 s->flags |= SN_ERR_PRXCOND;
2627 if (!(s->flags & SN_FINST_MASK))
2628 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2629 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2630}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2631
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2632/* This function is an analyser which processes the HTTP tarpit. It always
2633 * returns zero, at the beginning because it prevents any other processing
2634 * from occurring, and at the end because it terminates the request.
2635 */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2636int http_process_tarpit(struct session *s, struct buffer *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2637{
2638 struct http_txn *txn = &s->txn;
2639
2640 /* This connection is being tarpitted. The CLIENT side has
2641 * already set the connect expiration date to the right
2642 * timeout. We just have to check that the client is still
2643 * there and that the timeout has not expired.
2644 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2645 buffer_dont_connect(req);
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2646 if ((req->flags & (BF_SHUTR|BF_READ_ERROR)) == 0 &&
2647 !tick_is_expired(req->analyse_exp, now_ms))
2648 return 0;
2649
2650 /* We will set the queue timer to the time spent, just for
2651 * logging purposes. We fake a 500 server error, so that the
2652 * attacker will not suspect his connection has been tarpitted.
2653 * It will not cause trouble to the logs because we can exclude
2654 * the tarpitted connections by filtering on the 'PT' status flags.
2655 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2656 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
2657
2658 txn->status = 500;
2659 if (req->flags != BF_READ_ERROR)
2660 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_500));
2661
2662 req->analysers = 0;
2663 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2664
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2665 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2666 if (s->listener->counters)
2667 s->listener->counters->failed_req++;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2668
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2669 if (!(s->flags & SN_ERR_MASK))
2670 s->flags |= SN_ERR_PRXCOND;
2671 if (!(s->flags & SN_FINST_MASK))
2672 s->flags |= SN_FINST_T;
2673 return 0;
2674}
2675
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2676/* This function is an analyser which processes the HTTP request body. It looks
2677 * for parameters to be used for the load balancing algorithm (url_param). It
2678 * must only be called after the standard HTTP request processing has occurred,
2679 * because it expects the request to be parsed. It returns zero if it needs to
2680 * read more data, or 1 once it has completed its analysis.
2681 */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2682int http_process_request_body(struct session *s, struct buffer *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2683{
2684 struct http_msg *msg = &s->txn.req;
2685 unsigned long body = msg->sol[msg->eoh] == '\r' ? msg->eoh + 2 : msg->eoh + 1;
2686 long long limit = s->be->url_param_post_limit;
2687 struct hdr_ctx ctx;
2688
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2689 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
2690 /* we need more data */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2691 buffer_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2692 return 0;
2693 }
2694
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2695 /* We have to parse the HTTP request body to find any required data.
2696 * "balance url_param check_post" should have been the only way to get
2697 * into this. We were brought here after HTTP header analysis, so all
2698 * related structures are ready.
2699 */
2700
2701 ctx.idx = 0;
2702
2703 /* now if we have a length, we'll take the hint */
2704 http_find_header2("Transfer-Encoding", 17, msg->sol, &s->txn.hdr_idx, &ctx);
2705 if (ctx.idx && ctx.vlen >= 7 && strncasecmp(ctx.line+ctx.val, "chunked", 7) == 0) {
2706 unsigned int chunk = 0;
2707 while (body < req->l && !HTTP_IS_CRLF(msg->sol[body])) {
2708 char c = msg->sol[body];
2709 if (ishex(c)) {
2710 unsigned int hex = toupper(c) - '0';
2711 if (hex > 9)
2712 hex -= 'A' - '9' - 1;
2713 chunk = (chunk << 4) | hex;
2714 } else
2715 break;
2716 body++;
2717 }
2718 if (body + 2 >= req->l) /* we want CRLF too */
2719 goto http_body_end; /* end of buffer? data missing! */
2720
2721 if (memcmp(msg->sol+body, "\r\n", 2) != 0)
2722 goto http_body_end; /* chunked encoding len ends with CRLF, and we don't have it yet */
2723
2724 body += 2; // skip CRLF
2725
2726 /* if we support more then one chunk here, we have to do it again when assigning server
2727 * 1. how much entity data do we have? new var
2728 * 2. should save entity_start, entity_cursor, elen & rlen in req; so we don't repeat scanning here
2729 * 3. test if elen > limit, or set new limit to elen if 0 (end of entity found)
2730 */
2731
2732 if (chunk < limit)
2733 limit = chunk; /* only reading one chunk */
2734 } else {
2735 if (msg->hdr_content_len < limit)
2736 limit = msg->hdr_content_len;
2737 }
2738
2739 http_body_end:
2740 /* we leave once we know we have nothing left to do. This means that we have
2741 * enough bytes, or that we know we'll not get any more (buffer full, read
2742 * buffer closed).
2743 */
2744 if (req->l - body >= limit || /* enough bytes! */
2745 req->flags & (BF_FULL | BF_READ_ERROR | BF_SHUTR | BF_READ_TIMEOUT) ||
2746 tick_is_expired(req->analyse_exp, now_ms)) {
2747 /* The situation will not evolve, so let's give up on the analysis. */
2748 s->logs.tv_request = now; /* update the request timer to reflect full request */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2749 req->analysers &= ~an_bit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2750 req->analyse_exp = TICK_ETERNITY;
2751 return 1;
2752 }
2753 else {
2754 /* Not enough data. We'll re-use the http-request
2755 * timeout here. Ideally, we should set the timeout
2756 * relative to the accept() date. We just set the
2757 * request timeout once at the beginning of the
2758 * request.
2759 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2760 buffer_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2761 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]2762 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2763 return 0;
2764 }
2765}
2766
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2767/* This function performs all the processing enabled for the current response.
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2768 * It normally returns zero, but may return 1 if it absolutely needs to be
2769 * called again after other functions. It relies on buffers flags, and updates
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2770 * t->rep->analysers. It might make sense to explode it into several other
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2771 * functions. It works like process_request (see indications above).
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2772 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2773int process_response(struct session *t)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2774{
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2775 struct http_txn *txn = &t->txn;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2776 struct buffer *req = t->req;
2777 struct buffer *rep = t->rep;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]2778 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2779
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]2780 next_response:
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2781 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]2782 now_ms, __FUNCTION__,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2783 t,
2784 rep,
2785 rep->rex, rep->wex,
2786 rep->flags,
2787 rep->l,
2788 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]2789
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2790 if (rep->analysers & AN_RTR_HTTP_HDR) { /* receiving server headers */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2791 /*
2792 * Now parse the partial (or complete) lines.
2793 * We will check the response syntax, and also join multi-line
2794 * headers. An index of all the lines will be elaborated while
2795 * parsing.
2796 *
2797 * For the parsing, we use a 28 states FSM.
2798 *
2799 * Here is the information we currently have :
Willy Tarreaue393fe22008-08-16 22:18:07 +0200[diff] [blame]2800 * rep->data + rep->som = beginning of response
2801 * rep->data + rep->eoh = end of processed headers / start of current one
2802 * rep->data + rep->eol = end of current header or line (LF or CRLF)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2803 * rep->lr = first non-visited byte
2804 * rep->r = end of data
2805 */
Willy Tarreau7f875f62008-08-11 17:35:01 +0200[diff] [blame]2806
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2807 int cur_idx;
2808 struct http_msg *msg = &txn->rsp;
2809 struct proxy *cur_proxy;
2810
2811 if (likely(rep->lr < rep->r))
2812 http_msg_analyzer(rep, msg, &txn->hdr_idx);
2813
2814 /* 1: we might have to print this header in debug mode */
2815 if (unlikely((global.mode & MODE_DEBUG) &&
2816 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
2817 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
2818 char *eol, *sol;
2819
2820 sol = rep->data + msg->som;
2821 eol = sol + msg->sl.rq.l;
2822 debug_hdr("srvrep", t, sol, eol);
2823
2824 sol += hdr_idx_first_pos(&txn->hdr_idx);
2825 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
2826
2827 while (cur_idx) {
2828 eol = sol + txn->hdr_idx.v[cur_idx].len;
2829 debug_hdr("srvhdr", t, sol, eol);
2830 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2831 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2832 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2833 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2834
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2835 /*
2836 * Now we quickly check if we have found a full valid response.
2837 * If not so, we check the FD and buffer states before leaving.
2838 * A full response is indicated by the fact that we have seen
2839 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
2840 * responses are checked first.
2841 *
2842 * Depending on whether the client is still there or not, we
2843 * may send an error response back or not. Note that normally
2844 * we should only check for HTTP status there, and check I/O
2845 * errors somewhere else.
2846 */
2847
2848 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2849 /* Invalid response */
2850 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]2851 /* we detected a parsing error. We want to archive this response
2852 * in the dedicated proxy area for later troubleshooting.
2853 */
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2854 hdr_response_bad:
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2855 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
2856 http_capture_bad_message(&t->be->invalid_rep, t, rep, msg, t->fe);
2857
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2858 buffer_shutr_now(rep);
2859 buffer_shutw_now(req);
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2860 if (t->srv)
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2861 t->srv->counters.failed_resp++;
2862 t->be->counters.failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2863 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2864 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2865 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2866 if (!(t->flags & SN_ERR_MASK))
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2867 t->flags |= SN_ERR_PRXCOND;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2868 if (!(t->flags & SN_FINST_MASK))
2869 t->flags |= SN_FINST_H;
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]2870
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2871 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2872 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2873 /* too large response does not fit in buffer. */
2874 else if (rep->flags & BF_FULL) {
2875 goto hdr_response_bad;
2876 }
2877 /* read error */
2878 else if (rep->flags & BF_READ_ERROR) {
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2879 if (msg->err_pos >= 0)
2880 http_capture_bad_message(&t->be->invalid_rep, t, rep, msg, t->fe);
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2881 buffer_shutr_now(rep);
2882 buffer_shutw_now(req);
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2883 if (t->srv)
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2884 t->srv->counters.failed_resp++;
2885 t->be->counters.failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2886 rep->analysers = 0;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2887 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2888 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2889 if (!(t->flags & SN_ERR_MASK))
2890 t->flags |= SN_ERR_SRVCL;
2891 if (!(t->flags & SN_FINST_MASK))
2892 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2893 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2894 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2895 /* read timeout : return a 504 to the client. */
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2896 else if (rep->flags & BF_READ_TIMEOUT) {
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2897 if (msg->err_pos >= 0)
2898 http_capture_bad_message(&t->be->invalid_rep, t, rep, msg, t->fe);
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2899 buffer_shutr_now(rep);
2900 buffer_shutw_now(req);
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2901 if (t->srv)
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2902 t->srv->counters.failed_resp++;
2903 t->be->counters.failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2904 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2905 txn->status = 504;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2906 stream_int_return(rep->cons, error_message(t, HTTP_ERR_504));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2907 if (!(t->flags & SN_ERR_MASK))
2908 t->flags |= SN_ERR_SRVTO;
2909 if (!(t->flags & SN_FINST_MASK))
2910 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2911 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2912 }
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2913 /* close from server */
2914 else if (rep->flags & BF_SHUTR) {
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2915 if (msg->err_pos >= 0)
2916 http_capture_bad_message(&t->be->invalid_rep, t, rep, msg, t->fe);
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2917 buffer_shutw_now(req);
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2918 if (t->srv)
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2919 t->srv->counters.failed_resp++;
2920 t->be->counters.failed_resp++;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2921 rep->analysers = 0;
2922 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2923 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2924 if (!(t->flags & SN_ERR_MASK))
2925 t->flags |= SN_ERR_SRVCL;
2926 if (!(t->flags & SN_FINST_MASK))
2927 t->flags |= SN_FINST_H;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2928 return 0;
2929 }
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2930 /* write error to client (we don't send any message then) */
2931 else if (rep->flags & BF_WRITE_ERROR) {
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2932 if (msg->err_pos >= 0)
2933 http_capture_bad_message(&t->be->invalid_rep, t, rep, msg, t->fe);
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2934 buffer_shutr_now(rep);
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2935 t->be->counters.failed_resp++;
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]2936 rep->analysers = 0;
2937 if (!(t->flags & SN_ERR_MASK))
2938 t->flags |= SN_ERR_CLICL;
2939 if (!(t->flags & SN_FINST_MASK))
2940 t->flags |= SN_FINST_H;
2941 return 0;
2942 }
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]2943
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2944 buffer_dont_close(rep);
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2945 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2946 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2947
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2948
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2949 /*****************************************************************
2950 * More interesting part now : we know that we have a complete *
2951 * response which at least looks like HTTP. We have an indicator *
2952 * of each header's length, so we can parse them quickly. *
2953 ****************************************************************/
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2954
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2955 if (msg->err_pos >= 0)
2956 http_capture_bad_message(&t->be->invalid_rep, t, rep, msg, t->fe);
2957
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2958 rep->analysers &= ~AN_RTR_HTTP_HDR;
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]2959
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2960 /* ensure we keep this pointer to the beginning of the message */
2961 msg->sol = rep->data + msg->som;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2962
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2963 /*
2964 * 1: get the status code and check for cacheability.
2965 */
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2966
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2967 t->logs.logwait &= ~LW_RESP;
2968 txn->status = strl2ui(rep->data + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2969
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]2970 n = rep->data[msg->sl.st.c] - '0';
2971 if (n < 1 || n > 5)
2972 n = 0;
2973
2974 t->srv->counters.p.http.rsp[n]++;
2975 t->be->counters.p.http.rsp[n]++;
2976
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2977 switch (txn->status) {
2978 case 200:
2979 case 203:
2980 case 206:
2981 case 300:
2982 case 301:
2983 case 410:
2984 /* RFC2616 @13.4:
2985 * "A response received with a status code of
2986 * 200, 203, 206, 300, 301 or 410 MAY be stored
2987 * by a cache (...) unless a cache-control
2988 * directive prohibits caching."
2989 *
2990 * RFC2616 @9.5: POST method :
2991 * "Responses to this method are not cacheable,
2992 * unless the response includes appropriate
2993 * Cache-Control or Expires header fields."
2994 */
2995 if (likely(txn->meth != HTTP_METH_POST) &&
2996 (t->be->options & (PR_O_CHK_CACHE|PR_O_COOK_NOC)))
2997 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
2998 break;
2999 default:
3000 break;
3001 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3002
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3003 /*
3004 * 2: we may need to capture headers
3005 */
3006 if (unlikely((t->logs.logwait & LW_RSPHDR) && t->fe->rsp_cap))
3007 capture_headers(rep->data + msg->som, &txn->hdr_idx,
3008 txn->rsp.cap, t->fe->rsp_cap);
3009
3010 /*
3011 * 3: we will have to evaluate the filters.
3012 * As opposed to version 1.2, now they will be evaluated in the
3013 * filters order and not in the header order. This means that
3014 * each filter has to be validated among all headers.
3015 *
3016 * Filters are tried with ->be first, then with ->fe if it is
3017 * different from ->be.
3018 */
3019
3020 t->flags &= ~SN_CONN_CLOSED; /* prepare for inspection */
3021
3022 cur_proxy = t->be;
3023 while (1) {
3024 struct proxy *rule_set = cur_proxy;
3025
3026 /* try headers filters */
3027 if (rule_set->rsp_exp != NULL) {
3028 if (apply_filters_to_response(t, rep, rule_set->rsp_exp) < 0) {
3029 return_bad_resp:
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]3030 if (t->srv)
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3031 t->srv->counters.failed_resp++;
3032 cur_proxy->counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3033 return_srv_prx_502:
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3034 buffer_shutr_now(rep);
3035 buffer_shutw_now(req);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]3036 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3037 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]3038 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3039 if (!(t->flags & SN_ERR_MASK))
3040 t->flags |= SN_ERR_PRXCOND;
3041 if (!(t->flags & SN_FINST_MASK))
3042 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3043 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3044 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3045 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3046
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3047 /* has the response been denied ? */
3048 if (txn->flags & TX_SVDENY) {
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]3049 if (t->srv)
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3050 t->srv->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3051
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3052 cur_proxy->counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3053 if (t->listener->counters)
3054 t->listener->counters->denied_resp++;
3055
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3056 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]3057 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3058
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3059 /* We might have to check for "Connection:" */
3060 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]3061 !(t->flags & SN_CONN_CLOSED) &&
3062 txn->status >= 200) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3063 char *cur_ptr, *cur_end, *cur_next;
3064 int cur_idx, old_idx, delta, val;
3065 struct hdr_idx_elem *cur_hdr;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3066
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3067 cur_next = rep->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
3068 old_idx = 0;
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]3069
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3070 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
3071 cur_hdr = &txn->hdr_idx.v[cur_idx];
3072 cur_ptr = cur_next;
3073 cur_end = cur_ptr + cur_hdr->len;
3074 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3075
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3076 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
3077 if (val) {
3078 /* 3 possibilities :
3079 * - we have already set Connection: close,
3080 * so we remove this line.
3081 * - we have not yet set Connection: close,
3082 * but this line indicates close. We leave
3083 * it untouched and set the flag.
3084 * - we have not yet set Connection: close,
3085 * and this line indicates non-close. We
3086 * replace it.
3087 */
3088 if (t->flags & SN_CONN_CLOSED) {
3089 delta = buffer_replace2(rep, cur_ptr, cur_next, NULL, 0);
3090 txn->rsp.eoh += delta;
3091 cur_next += delta;
3092 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3093 txn->hdr_idx.used--;
3094 cur_hdr->len = 0;
3095 } else {
3096 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
3097 delta = buffer_replace2(rep, cur_ptr + val, cur_end,
3098 "close", 5);
3099 cur_next += delta;
3100 cur_hdr->len += delta;
3101 txn->rsp.eoh += delta;
3102 }
3103 t->flags |= SN_CONN_CLOSED;
3104 }
3105 }
3106 old_idx = cur_idx;
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]3107 }
3108 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3109
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3110 /* add response headers from the rule sets in the same order */
3111 for (cur_idx = 0; cur_idx < rule_set->nb_rspadd; cur_idx++) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3112 if (txn->status < 200)
3113 break;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3114 if (unlikely(http_header_add_tail(rep, &txn->rsp, &txn->hdr_idx,
3115 rule_set->rsp_add[cur_idx])) < 0)
3116 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]3117 }
3118
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3119 /* check whether we're already working on the frontend */
3120 if (cur_proxy == t->fe)
3121 break;
3122 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3123 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3124
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3125 /*
3126 * 4: check for server cookie.
3127 */
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3128 if ((t->be->cookie_name || t->be->appsession_name || t->fe->capture_name
3129 || (t->be->options & PR_O_CHK_CACHE)) && txn->status >= 200)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3130 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3131
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3132
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3133 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3134 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3135 */
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3136 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]3137 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3138
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3139 /*
3140 * 6: add server cookie in the response if needed
3141 */
3142 if ((t->srv) && !(t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_INS) &&
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3143 (!(t->be->options & PR_O_COOK_POST) || (txn->meth == HTTP_METH_POST)) &&
3144 txn->status >= 200) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3145 int len;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3146
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3147 /* the server is known, it's not the one the client requested, we have to
3148 * insert a set-cookie here, except if we want to insert only on POST
3149 * requests and this one isn't. Note that servers which don't have cookies
3150 * (eg: some backup servers) will return a full cookie removal request.
3151 */
3152 len = sprintf(trash, "Set-Cookie: %s=%s; path=/",
3153 t->be->cookie_name,
3154 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]3155
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3156 if (t->be->cookie_domain)
3157 len += sprintf(trash+len, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3158
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3159 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3160 trash, len)) < 0)
3161 goto return_bad_resp;
3162 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3163
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3164 /* Here, we will tell an eventual cache on the client side that we don't
3165 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
3166 * Some caches understand the correct form: 'no-cache="set-cookie"', but
3167 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
3168 */
3169 if ((t->be->options & PR_O_COOK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3170
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3171 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
3172
3173 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3174 "Cache-control: private", 22)) < 0)
3175 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3176 }
3177 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3178
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3179
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3180 /*
3181 * 7: check if result will be cacheable with a cookie.
3182 * We'll block the response if security checks have caught
3183 * nasty things such as a cacheable cookie.
3184 */
3185 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) ==
3186 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) &&
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3187 (t->be->options & PR_O_CHK_CACHE) &&
3188 txn->status >= 200) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3189
3190 /* we're in presence of a cacheable response containing
3191 * a set-cookie header. We'll block it as requested by
3192 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3193 */
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]3194 if (t->srv)
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3195 t->srv->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3196
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3197 cur_proxy->counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3198 if (t->listener->counters)
3199 t->listener->counters->denied_resp++;
3200
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3201 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
3202 t->be->id, t->srv?t->srv->id:"<dispatch>");
3203 send_log(t->be, LOG_ALERT,
3204 "Blocking cacheable cookie in response from instance %s, server %s.\n",
3205 t->be->id, t->srv?t->srv->id:"<dispatch>");
3206 goto return_srv_prx_502;
3207 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3208
3209 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3210 * 8: add "Connection: close" if needed and not yet set.
3211 * 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]3212 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3213 if (!(t->flags & SN_CONN_CLOSED) &&
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3214 ((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
3215 txn->status >= 200) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3216 if ((unlikely(msg->sl.st.v_l != 8) ||
3217 unlikely(req->data[msg->som + 7] != '0')) &&
3218 unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3219 "Connection: close", 17)) < 0)
3220 goto return_bad_resp;
3221 t->flags |= SN_CONN_CLOSED;
3222 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3223
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3224 /*
3225 * 9: we may be facing a 1xx response (100 continue, 101 switching protocols),
3226 * in which case this is not the right response, and we're waiting for the
3227 * next one. Let's allow this response to go to the client and wait for the
3228 * next one.
3229 */
3230 if (txn->status < 200) {
3231 hdr_idx_init(&txn->hdr_idx);
3232 buffer_forward(rep, rep->lr - (rep->data + msg->som));
3233 msg->msg_state = HTTP_MSG_RPBEFORE;
3234 txn->status = 0;
3235 rep->analysers |= AN_RTR_HTTP_HDR;
3236 goto next_response;
3237 }
3238
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3239 /*************************************************************
3240 * OK, that's finished for the headers. We have done what we *
3241 * could. Let's switch to the DATA state. *
3242 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3243
Willy Tarreaua07a34e2009-08-16 23:27:46 +0200[diff] [blame]3244 buffer_set_rlim(rep, rep->size); /* no more rewrite needed */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3245 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3246
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3247 /* if the user wants to log as soon as possible, without counting
3248 * bytes from the server, then this is the right moment. We have
3249 * to temporarily assign bytes_out to log what we currently have.
3250 */
3251 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
3252 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
3253 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]3254 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3255 t->logs.bytes_out = 0;
3256 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3257
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3258 /* Note: we must not try to cheat by jumping directly to DATA,
3259 * otherwise we would not let the client side wake up.
3260 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3261
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3262 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3263 }
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3264
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]3265 /* Note: eventhough nobody should set an unknown flag, clearing them right now will
3266 * probably reduce one day's debugging session.
3267 */
3268#ifdef DEBUG_DEV
3269 if (rep->analysers & ~(AN_RTR_HTTP_HDR)) {
3270 fprintf(stderr, "FIXME !!!! unknown analysers flags %s:%d = 0x%08X\n",
3271 __FILE__, __LINE__, rep->analysers);
3272 ABORT_NOW();
3273 }
3274#endif
3275 rep->analysers &= AN_RTR_HTTP_HDR;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3276 return 0;
3277}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3278
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3279/* Iterate the same filter through all request headers.
3280 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3281 * Since it can manage the switch to another backend, it updates the per-proxy
3282 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3283 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3284int 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]3285{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3286 char term;
3287 char *cur_ptr, *cur_end, *cur_next;
3288 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3289 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3290 struct hdr_idx_elem *cur_hdr;
3291 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]3292
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3293 last_hdr = 0;
3294
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3295 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3296 old_idx = 0;
3297
3298 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3299 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3300 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3301 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3302 (exp->action == ACT_ALLOW ||
3303 exp->action == ACT_DENY ||
3304 exp->action == ACT_TARPIT))
3305 return 0;
3306
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3307 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3308 if (!cur_idx)
3309 break;
3310
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3311 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3312 cur_ptr = cur_next;
3313 cur_end = cur_ptr + cur_hdr->len;
3314 cur_next = cur_end + cur_hdr->cr + 1;
3315
3316 /* Now we have one header between cur_ptr and cur_end,
3317 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3318 */
3319
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3320 /* The annoying part is that pattern matching needs
3321 * that we modify the contents to null-terminate all
3322 * strings before testing them.
3323 */
3324
3325 term = *cur_end;
3326 *cur_end = '\0';
3327
3328 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3329 switch (exp->action) {
3330 case ACT_SETBE:
3331 /* It is not possible to jump a second time.
3332 * FIXME: should we return an HTTP/500 here so that
3333 * the admin knows there's a problem ?
3334 */
3335 if (t->be != t->fe)
3336 break;
3337
3338 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3339 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3340 last_hdr = 1;
3341 break;
3342
3343 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3344 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3345 last_hdr = 1;
3346 break;
3347
3348 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3349 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3350 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3351
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3352 t->be->counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3353 if (t->listener->counters)
3354 t->listener->counters->denied_resp++;
3355
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3356 break;
3357
3358 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3359 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3360 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3361
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3362 t->be->counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3363 if (t->listener->counters)
3364 t->listener->counters->denied_resp++;
3365
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3366 break;
3367
3368 case ACT_REPLACE:
3369 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3370 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3371 /* FIXME: if the user adds a newline in the replacement, the
3372 * index will not be recalculated for now, and the new line
3373 * will not be counted as a new header.
3374 */
3375
3376 cur_end += delta;
3377 cur_next += delta;
3378 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3379 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3380 break;
3381
3382 case ACT_REMOVE:
3383 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
3384 cur_next += delta;
3385
3386 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3387 txn->req.eoh += delta;
3388 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3389 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3390 cur_hdr->len = 0;
3391 cur_end = NULL; /* null-term has been rewritten */
3392 break;
3393
3394 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3395 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3396 if (cur_end)
3397 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3398
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3399 /* keep the link from this header to next one in case of later
3400 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3401 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3402 old_idx = cur_idx;
3403 }
3404 return 0;
3405}
3406
3407
3408/* Apply the filter to the request line.
3409 * Returns 0 if nothing has been done, 1 if the filter has been applied,
3410 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3411 * Since it can manage the switch to another backend, it updates the per-proxy
3412 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3413 */
3414int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
3415{
3416 char term;
3417 char *cur_ptr, *cur_end;
3418 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3419 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3420 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3421
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3422
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3423 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3424 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3425 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3426 (exp->action == ACT_ALLOW ||
3427 exp->action == ACT_DENY ||
3428 exp->action == ACT_TARPIT))
3429 return 0;
3430 else if (exp->action == ACT_REMOVE)
3431 return 0;
3432
3433 done = 0;
3434
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3435 cur_ptr = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3436 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3437
3438 /* Now we have the request line between cur_ptr and cur_end */
3439
3440 /* The annoying part is that pattern matching needs
3441 * that we modify the contents to null-terminate all
3442 * strings before testing them.
3443 */
3444
3445 term = *cur_end;
3446 *cur_end = '\0';
3447
3448 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3449 switch (exp->action) {
3450 case ACT_SETBE:
3451 /* It is not possible to jump a second time.
3452 * FIXME: should we return an HTTP/500 here so that
3453 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3454 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3455 if (t->be != t->fe)
3456 break;
3457
3458 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3459 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3460 done = 1;
3461 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3462
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3463 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3464 txn->flags |= TX_CLALLOW;
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_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3469 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3470
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3471 t->be->counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3472 if (t->listener->counters)
3473 t->listener->counters->denied_resp++;
3474
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3475 done = 1;
3476 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3477
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3478 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3479 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3480
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3481 t->be->counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3482 if (t->listener->counters)
3483 t->listener->counters->denied_resp++;
3484
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3485 done = 1;
3486 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3487
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3488 case ACT_REPLACE:
3489 *cur_end = term; /* restore the string terminator */
3490 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3491 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3492 /* FIXME: if the user adds a newline in the replacement, the
3493 * index will not be recalculated for now, and the new line
3494 * will not be counted as a new header.
3495 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3496
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3497 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3498 cur_end += delta;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3499
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3500 txn->req.sol = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3501 cur_end = (char *)http_parse_reqline(&txn->req, req->data,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3502 HTTP_MSG_RQMETH,
3503 cur_ptr, cur_end + 1,
3504 NULL, NULL);
3505 if (unlikely(!cur_end))
3506 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3507
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3508 /* we have a full request and we know that we have either a CR
3509 * or an LF at <ptr>.
3510 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3511 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
3512 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]3513 /* there is no point trying this regex on headers */
3514 return 1;
3515 }
3516 }
3517 *cur_end = term; /* restore the string terminator */
3518 return done;
3519}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]3520
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3521
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3522
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3523/*
3524 * Apply all the req filters <exp> to all headers in buffer <req> of session <t>.
3525 * 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]3526 * unparsable request. Since it can manage the switch to another backend, it
3527 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3528 */
3529int apply_filters_to_request(struct session *t, struct buffer *req, struct hdr_exp *exp)
3530{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3531 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3532 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3533 while (exp && !(txn->flags & (TX_CLDENY|TX_CLTARPIT))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3534 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3535
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3536 /*
3537 * The interleaving of transformations and verdicts
3538 * makes it difficult to decide to continue or stop
3539 * the evaluation.
3540 */
3541
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3542 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3543 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
3544 exp->action == ACT_TARPIT || exp->action == ACT_PASS)) {
3545 exp = exp->next;
3546 continue;
3547 }
3548
3549 /* Apply the filter to the request line. */
3550 ret = apply_filter_to_req_line(t, req, exp);
3551 if (unlikely(ret < 0))
3552 return -1;
3553
3554 if (likely(ret == 0)) {
3555 /* The filter did not match the request, it can be
3556 * iterated through all headers.
3557 */
3558 apply_filter_to_req_headers(t, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3559 }
3560 exp = exp->next;
3561 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3562 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3563}
3564
3565
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3566
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3567/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3568 * Manage client-side cookie. It can impact performance by about 2% so it is
3569 * desirable to call it only when needed.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3570 */
3571void manage_client_side_cookies(struct session *t, struct buffer *req)
3572{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3573 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3574 char *p1, *p2, *p3, *p4;
3575 char *del_colon, *del_cookie, *colon;
3576 int app_cookies;
3577
3578 appsess *asession_temp = NULL;
3579 appsess local_asession;
3580
3581 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3582 int cur_idx, old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3583
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3584 /* Iterate through the headers.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3585 * we start with the start line.
3586 */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]3587 old_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3588 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3589
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3590 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3591 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3592 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3593
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3594 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3595 cur_ptr = cur_next;
3596 cur_end = cur_ptr + cur_hdr->len;
3597 cur_next = cur_end + cur_hdr->cr + 1;
3598
3599 /* We have one full header between cur_ptr and cur_end, and the
3600 * next header starts at cur_next. We're only interested in
3601 * "Cookie:" headers.
3602 */
3603
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3604 val = http_header_match2(cur_ptr, cur_end, "Cookie", 6);
3605 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3606 old_idx = cur_idx;
3607 continue;
3608 }
3609
3610 /* Now look for cookies. Conforming to RFC2109, we have to support
3611 * attributes whose name begin with a '$', and associate them with
3612 * the right cookie, if we want to delete this cookie.
3613 * So there are 3 cases for each cookie read :
3614 * 1) it's a special attribute, beginning with a '$' : ignore it.
3615 * 2) it's a server id cookie that we *MAY* want to delete : save
3616 * some pointers on it (last semi-colon, beginning of cookie...)
3617 * 3) it's an application cookie : we *MAY* have to delete a previous
3618 * "special" cookie.
3619 * At the end of loop, if a "special" cookie remains, we may have to
3620 * remove it. If no application cookie persists in the header, we
3621 * *MUST* delete it
3622 */
3623
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3624 colon = p1 = cur_ptr + val; /* first non-space char after 'Cookie:' */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3625
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3626 /* del_cookie == NULL => nothing to be deleted */
3627 del_colon = del_cookie = NULL;
3628 app_cookies = 0;
3629
3630 while (p1 < cur_end) {
3631 /* skip spaces and colons, but keep an eye on these ones */
3632 while (p1 < cur_end) {
3633 if (*p1 == ';' || *p1 == ',')
3634 colon = p1;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3635 else if (!isspace((unsigned char)*p1))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3636 break;
3637 p1++;
3638 }
3639
3640 if (p1 == cur_end)
3641 break;
3642
3643 /* p1 is at the beginning of the cookie name */
3644 p2 = p1;
3645 while (p2 < cur_end && *p2 != '=')
3646 p2++;
3647
3648 if (p2 == cur_end)
3649 break;
3650
3651 p3 = p2 + 1; /* skips the '=' sign */
3652 if (p3 == cur_end)
3653 break;
3654
3655 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3656 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';' && *p4 != ',')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3657 p4++;
3658
3659 /* here, we have the cookie name between p1 and p2,
3660 * and its value between p3 and p4.
3661 * we can process it :
3662 *
3663 * Cookie: NAME=VALUE;
3664 * | || || |
3665 * | || || +--> p4
3666 * | || |+-------> p3
3667 * | || +--------> p2
3668 * | |+------------> p1
3669 * | +-------------> colon
3670 * +--------------------> cur_ptr
3671 */
3672
3673 if (*p1 == '$') {
3674 /* skip this one */
3675 }
3676 else {
3677 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3678 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3679 txn->cli_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3680 (p4 - p1 >= t->fe->capture_namelen) &&
3681 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3682 int log_len = p4 - p1;
3683
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]3684 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3685 Alert("HTTP logging : out of memory.\n");
3686 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3687 if (log_len > t->fe->capture_len)
3688 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3689 memcpy(txn->cli_cookie, p1, log_len);
3690 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3691 }
3692 }
3693
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3694 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
3695 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3696 /* Cool... it's the right one */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3697 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3698 char *delim;
3699
3700 /* if we're in cookie prefix mode, we'll search the delimitor so that we
3701 * have the server ID betweek p3 and delim, and the original cookie between
3702 * delim+1 and p4. Otherwise, delim==p4 :
3703 *
3704 * Cookie: NAME=SRV~VALUE;
3705 * | || || | |
3706 * | || || | +--> p4
3707 * | || || +--------> delim
3708 * | || |+-----------> p3
3709 * | || +------------> p2
3710 * | |+----------------> p1
3711 * | +-----------------> colon
3712 * +------------------------> cur_ptr
3713 */
3714
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3715 if (t->be->options & PR_O_COOK_PFX) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3716 for (delim = p3; delim < p4; delim++)
3717 if (*delim == COOKIE_DELIM)
3718 break;
3719 }
3720 else
3721 delim = p4;
3722
3723
3724 /* Here, we'll look for the first running server which supports the cookie.
3725 * This allows to share a same cookie between several servers, for example
3726 * to dedicate backup servers to specific servers only.
3727 * However, to prevent clients from sticking to cookie-less backup server
3728 * when they have incidentely learned an empty cookie, we simply ignore
3729 * empty cookies and mark them as invalid.
3730 */
3731 if (delim == p3)
3732 srv = NULL;
3733
3734 while (srv) {
Willy Tarreau92f2ab12007-02-02 22:14:47 +0100[diff] [blame]3735 if (srv->cookie && (srv->cklen == delim - p3) &&
3736 !memcmp(p3, srv->cookie, delim - p3)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3737 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3738 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3739 txn->flags &= ~TX_CK_MASK;
3740 txn->flags |= TX_CK_VALID;
3741 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3742 t->srv = srv;
3743 break;
3744 } else {
3745 /* we found a server, but it's down */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3746 txn->flags &= ~TX_CK_MASK;
3747 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3748 }
3749 }
3750 srv = srv->next;
3751 }
3752
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3753 if (!srv && !(txn->flags & TX_CK_DOWN)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3754 /* no server matched this cookie */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3755 txn->flags &= ~TX_CK_MASK;
3756 txn->flags |= TX_CK_INVALID;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3757 }
3758
3759 /* depending on the cookie mode, we may have to either :
3760 * - delete the complete cookie if we're in insert+indirect mode, so that
3761 * the server never sees it ;
3762 * - remove the server id from the cookie value, and tag the cookie as an
3763 * application cookie so that it does not get accidentely removed later,
3764 * if we're in cookie prefix mode
3765 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3766 if ((t->be->options & PR_O_COOK_PFX) && (delim != p4)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3767 int delta; /* negative */
3768
3769 delta = buffer_replace2(req, p3, delim + 1, NULL, 0);
3770 p4 += delta;
3771 cur_end += delta;
3772 cur_next += delta;
3773 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3774 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3775
3776 del_cookie = del_colon = NULL;
3777 app_cookies++; /* protect the header from deletion */
3778 }
3779 else if (del_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3780 (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]3781 del_cookie = p1;
3782 del_colon = colon;
3783 }
3784 } else {
3785 /* now we know that we must keep this cookie since it's
3786 * not ours. But if we wanted to delete our cookie
3787 * earlier, we cannot remove the complete header, but we
3788 * can remove the previous block itself.
3789 */
3790 app_cookies++;
3791
3792 if (del_cookie != NULL) {
3793 int delta; /* negative */
3794
3795 delta = buffer_replace2(req, del_cookie, p1, NULL, 0);
3796 p4 += delta;
3797 cur_end += delta;
3798 cur_next += delta;
3799 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3800 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3801 del_cookie = del_colon = NULL;
3802 }
3803 }
3804
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3805 if ((t->be->appsession_name != NULL) &&
3806 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3807 /* first, let's see if the cookie is our appcookie*/
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3808
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3809 /* Cool... it's the right one */
3810
3811 asession_temp = &local_asession;
3812
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3813 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3814 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
3815 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
3816 return;
3817 }
3818
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3819 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
3820 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3821 asession_temp->serverid = NULL;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3822
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3823 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3824 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
3825 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3826 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3827 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3828 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3829 Alert("Not enough memory process_cli():asession:calloc().\n");
3830 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
3831 return;
3832 }
3833
3834 asession_temp->sessid = local_asession.sessid;
3835 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3836 asession_temp->request_count = 0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3837 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3838 } else {
3839 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3840 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3841 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3842 if (asession_temp->serverid == NULL) {
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3843 /* TODO redispatch request */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3844 Alert("Found Application Session without matching server.\n");
3845 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3846 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3847 while (srv) {
3848 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3849 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3850 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3851 txn->flags &= ~TX_CK_MASK;
3852 txn->flags |= TX_CK_VALID;
3853 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3854 t->srv = srv;
3855 break;
3856 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3857 txn->flags &= ~TX_CK_MASK;
3858 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3859 }
3860 }
3861 srv = srv->next;
3862 }/* end while(srv) */
3863 }/* end else if server == NULL */
3864
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]3865 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3866 asession_temp->request_count++;
3867#if defined(DEBUG_HASH)
3868 Alert("manage_client_side_cookies\n");
3869 appsession_hash_dump(&(t->be->htbl_proxy));
3870#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3871 }/* end if ((t->proxy->appsession_name != NULL) ... */
3872 }
3873
3874 /* we'll have to look for another cookie ... */
3875 p1 = p4;
3876 } /* while (p1 < cur_end) */
3877
3878 /* There's no more cookie on this line.
3879 * We may have marked the last one(s) for deletion.
3880 * We must do this now in two ways :
3881 * - if there is no app cookie, we simply delete the header ;
3882 * - if there are app cookies, we must delete the end of the
3883 * string properly, including the colon/semi-colon before
3884 * the cookie name.
3885 */
3886 if (del_cookie != NULL) {
3887 int delta;
3888 if (app_cookies) {
3889 delta = buffer_replace2(req, del_colon, cur_end, NULL, 0);
3890 cur_end = del_colon;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3891 cur_hdr->len += delta;
3892 } else {
3893 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3894
3895 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3896 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3897 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3898 cur_hdr->len = 0;
3899 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]3900 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3901 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3902 }
3903
3904 /* keep the link from this header to next one */
3905 old_idx = cur_idx;
3906 } /* end of cookie processing on this header */
3907}
3908
3909
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3910/* Iterate the same filter through all response headers contained in <rtr>.
3911 * Returns 1 if this filter can be stopped upon return, otherwise 0.
3912 */
3913int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
3914{
3915 char term;
3916 char *cur_ptr, *cur_end, *cur_next;
3917 int cur_idx, old_idx, last_hdr;
3918 struct http_txn *txn = &t->txn;
3919 struct hdr_idx_elem *cur_hdr;
3920 int len, delta;
3921
3922 last_hdr = 0;
3923
3924 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
3925 old_idx = 0;
3926
3927 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3928 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3929 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3930 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3931 (exp->action == ACT_ALLOW ||
3932 exp->action == ACT_DENY))
3933 return 0;
3934
3935 cur_idx = txn->hdr_idx.v[old_idx].next;
3936 if (!cur_idx)
3937 break;
3938
3939 cur_hdr = &txn->hdr_idx.v[cur_idx];
3940 cur_ptr = cur_next;
3941 cur_end = cur_ptr + cur_hdr->len;
3942 cur_next = cur_end + cur_hdr->cr + 1;
3943
3944 /* Now we have one header between cur_ptr and cur_end,
3945 * and the next header starts at cur_next.
3946 */
3947
3948 /* The annoying part is that pattern matching needs
3949 * that we modify the contents to null-terminate all
3950 * strings before testing them.
3951 */
3952
3953 term = *cur_end;
3954 *cur_end = '\0';
3955
3956 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3957 switch (exp->action) {
3958 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3959 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3960 last_hdr = 1;
3961 break;
3962
3963 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3964 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3965 last_hdr = 1;
3966 break;
3967
3968 case ACT_REPLACE:
3969 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3970 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
3971 /* FIXME: if the user adds a newline in the replacement, the
3972 * index will not be recalculated for now, and the new line
3973 * will not be counted as a new header.
3974 */
3975
3976 cur_end += delta;
3977 cur_next += delta;
3978 cur_hdr->len += delta;
3979 txn->rsp.eoh += delta;
3980 break;
3981
3982 case ACT_REMOVE:
3983 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
3984 cur_next += delta;
3985
3986 /* FIXME: this should be a separate function */
3987 txn->rsp.eoh += delta;
3988 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3989 txn->hdr_idx.used--;
3990 cur_hdr->len = 0;
3991 cur_end = NULL; /* null-term has been rewritten */
3992 break;
3993
3994 }
3995 }
3996 if (cur_end)
3997 *cur_end = term; /* restore the string terminator */
3998
3999 /* keep the link from this header to next one in case of later
4000 * removal of next header.
4001 */
4002 old_idx = cur_idx;
4003 }
4004 return 0;
4005}
4006
4007
4008/* Apply the filter to the status line in the response buffer <rtr>.
4009 * Returns 0 if nothing has been done, 1 if the filter has been applied,
4010 * or -1 if a replacement resulted in an invalid status line.
4011 */
4012int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4013{
4014 char term;
4015 char *cur_ptr, *cur_end;
4016 int done;
4017 struct http_txn *txn = &t->txn;
4018 int len, delta;
4019
4020
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4021 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4022 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4023 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4024 (exp->action == ACT_ALLOW ||
4025 exp->action == ACT_DENY))
4026 return 0;
4027 else if (exp->action == ACT_REMOVE)
4028 return 0;
4029
4030 done = 0;
4031
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4032 cur_ptr = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4033 cur_end = cur_ptr + txn->rsp.sl.rq.l;
4034
4035 /* Now we have the status line between cur_ptr and cur_end */
4036
4037 /* The annoying part is that pattern matching needs
4038 * that we modify the contents to null-terminate all
4039 * strings before testing them.
4040 */
4041
4042 term = *cur_end;
4043 *cur_end = '\0';
4044
4045 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4046 switch (exp->action) {
4047 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4048 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4049 done = 1;
4050 break;
4051
4052 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4053 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4054 done = 1;
4055 break;
4056
4057 case ACT_REPLACE:
4058 *cur_end = term; /* restore the string terminator */
4059 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4060 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4061 /* FIXME: if the user adds a newline in the replacement, the
4062 * index will not be recalculated for now, and the new line
4063 * will not be counted as a new header.
4064 */
4065
4066 txn->rsp.eoh += delta;
4067 cur_end += delta;
4068
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4069 txn->rsp.sol = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4070 cur_end = (char *)http_parse_stsline(&txn->rsp, rtr->data,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]4071 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4072 cur_ptr, cur_end + 1,
4073 NULL, NULL);
4074 if (unlikely(!cur_end))
4075 return -1;
4076
4077 /* we have a full respnse and we know that we have either a CR
4078 * or an LF at <ptr>.
4079 */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4080 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]4081 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.rq.l, *cur_end == '\r');
4082 /* there is no point trying this regex on headers */
4083 return 1;
4084 }
4085 }
4086 *cur_end = term; /* restore the string terminator */
4087 return done;
4088}
4089
4090
4091
4092/*
4093 * Apply all the resp filters <exp> to all headers in buffer <rtr> of session <t>.
4094 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
4095 * unparsable response.
4096 */
4097int apply_filters_to_response(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4098{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4099 struct http_txn *txn = &t->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4100 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4101 while (exp && !(txn->flags & TX_SVDENY)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4102 int ret;
4103
4104 /*
4105 * The interleaving of transformations and verdicts
4106 * makes it difficult to decide to continue or stop
4107 * the evaluation.
4108 */
4109
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4110 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4111 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4112 exp->action == ACT_PASS)) {
4113 exp = exp->next;
4114 continue;
4115 }
4116
4117 /* Apply the filter to the status line. */
4118 ret = apply_filter_to_sts_line(t, rtr, exp);
4119 if (unlikely(ret < 0))
4120 return -1;
4121
4122 if (likely(ret == 0)) {
4123 /* The filter did not match the response, it can be
4124 * iterated through all headers.
4125 */
4126 apply_filter_to_resp_headers(t, rtr, exp);
4127 }
4128 exp = exp->next;
4129 }
4130 return 0;
4131}
4132
4133
4134
4135/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]4136 * Manage server-side cookies. It can impact performance by about 2% so it is
4137 * desirable to call it only when needed.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4138 */
4139void manage_server_side_cookies(struct session *t, struct buffer *rtr)
4140{
4141 struct http_txn *txn = &t->txn;
4142 char *p1, *p2, *p3, *p4;
4143
4144 appsess *asession_temp = NULL;
4145 appsess local_asession;
4146
4147 char *cur_ptr, *cur_end, *cur_next;
4148 int cur_idx, old_idx, delta;
4149
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4150 /* Iterate through the headers.
4151 * we start with the start line.
4152 */
4153 old_idx = 0;
4154 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4155
4156 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
4157 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4158 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4159
4160 cur_hdr = &txn->hdr_idx.v[cur_idx];
4161 cur_ptr = cur_next;
4162 cur_end = cur_ptr + cur_hdr->len;
4163 cur_next = cur_end + cur_hdr->cr + 1;
4164
4165 /* We have one full header between cur_ptr and cur_end, and the
4166 * next header starts at cur_next. We're only interested in
4167 * "Cookie:" headers.
4168 */
4169
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4170 val = http_header_match2(cur_ptr, cur_end, "Set-Cookie", 10);
4171 if (!val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4172 old_idx = cur_idx;
4173 continue;
4174 }
4175
4176 /* OK, right now we know we have a set-cookie at cur_ptr */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4177 txn->flags |= TX_SCK_ANY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4178
4179
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4180 /* maybe we only wanted to see if there was a set-cookie. Note that
4181 * the cookie capture is declared in the fronend.
4182 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4183 if (t->be->cookie_name == NULL &&
4184 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4185 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4186 return;
4187
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4188 p1 = cur_ptr + val; /* first non-space char after 'Set-Cookie:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4189
4190 while (p1 < cur_end) { /* in fact, we'll break after the first cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4191 if (p1 == cur_end || *p1 == ';') /* end of cookie */
4192 break;
4193
4194 /* p1 is at the beginning of the cookie name */
4195 p2 = p1;
4196
4197 while (p2 < cur_end && *p2 != '=' && *p2 != ';')
4198 p2++;
4199
4200 if (p2 == cur_end || *p2 == ';') /* next cookie */
4201 break;
4202
4203 p3 = p2 + 1; /* skip the '=' sign */
4204 if (p3 == cur_end)
4205 break;
4206
4207 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4208 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';')
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4209 p4++;
4210
4211 /* here, we have the cookie name between p1 and p2,
4212 * and its value between p3 and p4.
4213 * we can process it.
4214 */
4215
4216 /* first, let's see if we want to capture it */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4217 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4218 txn->srv_cookie == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4219 (p4 - p1 >= t->fe->capture_namelen) &&
4220 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4221 int log_len = p4 - p1;
4222
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]4223 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4224 Alert("HTTP logging : out of memory.\n");
4225 }
4226
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4227 if (log_len > t->fe->capture_len)
4228 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4229 memcpy(txn->srv_cookie, p1, log_len);
4230 txn->srv_cookie[log_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4231 }
4232
4233 /* now check if we need to process it for persistence */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4234 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4235 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4236 /* Cool... it's the right one */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4237 txn->flags |= TX_SCK_SEEN;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4238
4239 /* If the cookie is in insert mode on a known server, we'll delete
4240 * this occurrence because we'll insert another one later.
4241 * We'll delete it too if the "indirect" option is set and we're in
4242 * a direct access. */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4243 if (((t->srv) && (t->be->options & PR_O_COOK_INS)) ||
4244 ((t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_IND))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4245 /* this header must be deleted */
4246 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4247 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4248 txn->hdr_idx.used--;
4249 cur_hdr->len = 0;
4250 cur_next += delta;
4251 txn->rsp.eoh += delta;
4252
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4253 txn->flags |= TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4254 }
4255 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4256 (t->be->options & PR_O_COOK_RW)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4257 /* replace bytes p3->p4 with the cookie name associated
4258 * with this server since we know it.
4259 */
4260 delta = buffer_replace2(rtr, p3, p4, t->srv->cookie, t->srv->cklen);
4261 cur_hdr->len += delta;
4262 cur_next += delta;
4263 txn->rsp.eoh += delta;
4264
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4265 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4266 }
4267 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4268 (t->be->options & PR_O_COOK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4269 /* insert the cookie name associated with this server
4270 * before existing cookie, and insert a delimitor between them..
4271 */
4272 delta = buffer_replace2(rtr, p3, p3, t->srv->cookie, t->srv->cklen + 1);
4273 cur_hdr->len += delta;
4274 cur_next += delta;
4275 txn->rsp.eoh += delta;
4276
4277 p3[t->srv->cklen] = COOKIE_DELIM;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4278 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4279 }
4280 }
4281 /* next, let's see if the cookie is our appcookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4282 else if ((t->be->appsession_name != NULL) &&
4283 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4284
4285 /* Cool... it's the right one */
4286
4287 size_t server_id_len = strlen(t->srv->id) + 1;
4288 asession_temp = &local_asession;
4289
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4290 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4291 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4292 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4293 return;
4294 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4295 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4296 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4297 asession_temp->serverid = NULL;
4298
4299 /* only do insert, if lookup fails */
Ryan Warnick6d0b1fa2008-02-17 11:24:35 +0100[diff] [blame]4300 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
4301 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4302 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4303 Alert("Not enough Memory process_srv():asession:calloc().\n");
4304 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
4305 return;
4306 }
4307 asession_temp->sessid = local_asession.sessid;
4308 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4309 asession_temp->request_count = 0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4310 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
4311 } else {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4312 /* free wasted memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4313 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4314 }
4315
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4316 if (asession_temp->serverid == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4317 if ((asession_temp->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4318 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4319 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4320 return;
4321 }
4322 asession_temp->serverid[0] = '\0';
4323 }
4324
4325 if (asession_temp->serverid[0] == '\0')
4326 memcpy(asession_temp->serverid, t->srv->id, server_id_len);
4327
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]4328 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4329 asession_temp->request_count++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4330#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4331 Alert("manage_server_side_cookies\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4332 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4333#endif
4334 }/* end if ((t->proxy->appsession_name != NULL) ... */
4335 break; /* we don't want to loop again since there cannot be another cookie on the same line */
4336 } /* we're now at the end of the cookie value */
4337
4338 /* keep the link from this header to next one */
4339 old_idx = cur_idx;
4340 } /* end of cookie processing on this header */
4341}
4342
4343
4344
4345/*
4346 * Check if response is cacheable or not. Updates t->flags.
4347 */
4348void check_response_for_cacheability(struct session *t, struct buffer *rtr)
4349{
4350 struct http_txn *txn = &t->txn;
4351 char *p1, *p2;
4352
4353 char *cur_ptr, *cur_end, *cur_next;
4354 int cur_idx;
4355
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]4356 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4357 return;
4358
4359 /* Iterate through the headers.
4360 * we start with the start line.
4361 */
4362 cur_idx = 0;
4363 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4364
4365 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4366 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4367 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4368
4369 cur_hdr = &txn->hdr_idx.v[cur_idx];
4370 cur_ptr = cur_next;
4371 cur_end = cur_ptr + cur_hdr->len;
4372 cur_next = cur_end + cur_hdr->cr + 1;
4373
4374 /* We have one full header between cur_ptr and cur_end, and the
4375 * next header starts at cur_next. We're only interested in
4376 * "Cookie:" headers.
4377 */
4378
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4379 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
4380 if (val) {
4381 if ((cur_end - (cur_ptr + val) >= 8) &&
4382 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
4383 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
4384 return;
4385 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4386 }
4387
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4388 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
4389 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4390 continue;
4391
4392 /* OK, right now we know we have a cache-control header at cur_ptr */
4393
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4394 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4395
4396 if (p1 >= cur_end) /* no more info */
4397 continue;
4398
4399 /* p1 is at the beginning of the value */
4400 p2 = p1;
4401
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4402 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4403 p2++;
4404
4405 /* we have a complete value between p1 and p2 */
4406 if (p2 < cur_end && *p2 == '=') {
4407 /* we have something of the form no-cache="set-cookie" */
4408 if ((cur_end - p1 >= 21) &&
4409 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
4410 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4411 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4412 continue;
4413 }
4414
4415 /* OK, so we know that either p2 points to the end of string or to a comma */
4416 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
4417 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
4418 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
4419 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4420 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4421 return;
4422 }
4423
4424 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4425 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4426 continue;
4427 }
4428 }
4429}
4430
4431
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4432/*
4433 * Try to retrieve a known appsession in the URI, then the associated server.
4434 * If the server is found, it's assigned to the session.
4435 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4436void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4437{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4438 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4439 appsess *asession_temp = NULL;
4440 appsess local_asession;
4441 char *request_line;
4442
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4443 if (t->be->appsession_name == NULL ||
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]4444 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST) ||
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4445 (request_line = memchr(begin, ';', len)) == NULL ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4446 ((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]4447 return;
4448
4449 /* skip ';' */
4450 request_line++;
4451
4452 /* look if we have a jsessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4453 if (strncasecmp(request_line, t->be->appsession_name, t->be->appsession_name_len) != 0)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4454 return;
4455
4456 /* skip jsessionid= */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4457 request_line += t->be->appsession_name_len + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4458
4459 /* First try if we already have an appsession */
4460 asession_temp = &local_asession;
4461
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4462 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4463 Alert("Not enough memory process_cli():asession_temp->sessid:calloc().\n");
4464 send_log(t->be, LOG_ALERT, "Not enough Memory process_cli():asession_temp->sessid:calloc().\n");
4465 return;
4466 }
4467
4468 /* Copy the sessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4469 memcpy(asession_temp->sessid, request_line, t->be->appsession_len);
4470 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4471 asession_temp->serverid = NULL;
4472
4473 /* only do insert, if lookup fails */
Ryan Warnick6d0b1fa2008-02-17 11:24:35 +0100[diff] [blame]4474 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
4475 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4476 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4477 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4478 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4479 Alert("Not enough memory process_cli():asession:calloc().\n");
4480 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4481 return;
4482 }
4483 asession_temp->sessid = local_asession.sessid;
4484 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4485 asession_temp->request_count=0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4486 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4487 }
4488 else {
4489 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4490 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4491 }
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4492
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]4493 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4494 asession_temp->request_count++;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4495
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4496#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4497 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4498 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4499#endif
4500 if (asession_temp->serverid == NULL) {
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4501 /* TODO redispatch request */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4502 Alert("Found Application Session without matching server.\n");
4503 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4504 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4505 while (srv) {
4506 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4507 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4508 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4509 txn->flags &= ~TX_CK_MASK;
4510 txn->flags |= TX_CK_VALID;
4511 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4512 t->srv = srv;
4513 break;
4514 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4515 txn->flags &= ~TX_CK_MASK;
4516 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4517 }
4518 }
4519 srv = srv->next;
4520 }
4521 }
4522}
4523
4524
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4525/*
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4526 * In a GET or HEAD request, check if the requested URI matches the stats uri
4527 * for the current backend, and if an authorization has been passed and is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4528 *
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4529 * 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]4530 * t->be->uri_auth field is valid. An HTTP/401 response may be sent, or
Willy Tarreaub0c9bc42009-10-04 15:56:38 +0200[diff] [blame]4531 * the stats I/O handler will be registered to start sending data.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4532 *
4533 * Returns 1 if the session's state changes, otherwise 0.
4534 */
4535int stats_check_uri_auth(struct session *t, struct proxy *backend)
4536{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4537 struct http_txn *txn = &t->txn;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4538 struct uri_auth *uri_auth = backend->uri_auth;
4539 struct user_auth *user;
4540 int authenticated, cur_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4541 char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4542
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4543 memset(&t->data_ctx.stats, 0, sizeof(t->data_ctx.stats));
4544
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4545 /* check URI size */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4546 if (uri_auth->uri_len > txn->req.sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4547 return 0;
4548
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4549 h = t->req->data + txn->req.sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4550
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4551 /* the URI is in h */
4552 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4553 return 0;
4554
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4555 h += uri_auth->uri_len;
4556 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 3) {
4557 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4558 t->data_ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4559 break;
4560 }
4561 h++;
4562 }
4563
4564 if (uri_auth->refresh) {
4565 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4566 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 10) {
4567 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4568 t->data_ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4569 break;
4570 }
4571 h++;
4572 }
4573 }
4574
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]4575 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4576 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 4) {
4577 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4578 t->data_ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]4579 break;
4580 }
4581 h++;
4582 }
4583
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4584 t->data_ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
4585
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4586 /* we are in front of a interceptable URI. Let's check
4587 * if there's an authentication and if it's valid.
4588 */
4589 user = uri_auth->users;
4590 if (!user) {
4591 /* no user auth required, it's OK */
4592 authenticated = 1;
4593 } else {
4594 authenticated = 0;
4595
4596 /* a user list is defined, we have to check.
4597 * skip 21 chars for "Authorization: Basic ".
4598 */
4599
4600 /* FIXME: this should move to an earlier place */
4601 cur_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4602 h = t->req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
4603 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4604 int len = txn->hdr_idx.v[cur_idx].len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4605 if (len > 14 &&
4606 !strncasecmp("Authorization:", h, 14)) {
Krzysztof Piotr Oledzki6f61b212009-10-04 23:34:15 +0200[diff] [blame]4607 chunk_initlen(&txn->auth_hdr, h, 0, len);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4608 break;
4609 }
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4610 h += len + txn->hdr_idx.v[cur_idx].cr + 1;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4611 }
4612
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4613 if (txn->auth_hdr.len < 21 ||
4614 memcmp(txn->auth_hdr.str + 14, " Basic ", 7))
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4615 user = NULL;
4616
4617 while (user) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4618 if ((txn->auth_hdr.len == user->user_len + 14 + 7)
4619 && !memcmp(txn->auth_hdr.str + 14 + 7,
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4620 user->user_pwd, user->user_len)) {
4621 authenticated = 1;
4622 break;
4623 }
4624 user = user->next;
4625 }
4626 }
4627
4628 if (!authenticated) {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4629 struct chunk msg;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4630
4631 /* no need to go further */
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]4632 sprintf(trash, HTTP_401_fmt, uri_auth->auth_realm);
4633 chunk_initlen(&msg, trash, sizeof(trash), strlen(trash));
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4634 txn->status = 401;
Willy Tarreaudded32d2008-11-30 19:48:07 +0100[diff] [blame]4635 stream_int_retnclose(t->req->prod, &msg);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]4636 t->req->analysers = 0;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4637 if (!(t->flags & SN_ERR_MASK))
4638 t->flags |= SN_ERR_PRXCOND;
4639 if (!(t->flags & SN_FINST_MASK))
4640 t->flags |= SN_FINST_R;
4641 return 1;
4642 }
4643
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4644 /* The request is valid, the user is authenticated. Let's start sending
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4645 * data.
4646 */
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]4647 t->logs.tv_request = now;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4648 t->data_source = DATA_SRC_STATS;
4649 t->data_state = DATA_ST_INIT;
Willy Tarreau91e99932008-06-30 07:51:00 +0200[diff] [blame]4650 t->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreaub0c9bc42009-10-04 15:56:38 +0200[diff] [blame]4651 stream_int_register_handler(t->rep->prod, http_stats_io_handler);
4652 t->rep->prod->private = t;
4653 t->rep->prod->st0 = t->rep->prod->st1 = 0;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4654 return 1;
4655}
4656
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4657/*
4658 * Capture a bad request or response and archive it in the proxy's structure.
4659 */
4660void http_capture_bad_message(struct error_snapshot *es, struct session *s,
4661 struct buffer *buf, struct http_msg *msg,
4662 struct proxy *other_end)
4663{
Willy Tarreau2df8d712009-05-01 11:33:17 +0200[diff] [blame]4664 es->len = buf->r - (buf->data + msg->som);
4665 memcpy(es->buf, buf->data + msg->som, MIN(es->len, sizeof(es->buf)));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4666 if (msg->err_pos >= 0)
Willy Tarreau2df8d712009-05-01 11:33:17 +0200[diff] [blame]4667 es->pos = msg->err_pos - msg->som;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4668 else
Willy Tarreau2df8d712009-05-01 11:33:17 +0200[diff] [blame]4669 es->pos = buf->lr - (buf->data + msg->som);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4670 es->when = date; // user-visible date
4671 es->sid = s->uniq_id;
4672 es->srv = s->srv;
4673 es->oe = other_end;
4674 es->src = s->cli_addr;
4675}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4676
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4677/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4678 * Print a debug line with a header
4679 */
4680void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
4681{
4682 int len, max;
4683 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4684 dir, (unsigned short)t->req->prod->fd, (unsigned short)t->req->cons->fd);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4685 max = end - start;
4686 UBOUND(max, sizeof(trash) - len - 1);
4687 len += strlcpy2(trash + len, start, max + 1);
4688 trash[len++] = '\n';
4689 write(1, trash, len);
4690}
4691
4692
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4693/************************************************************************/
4694/* The code below is dedicated to ACL parsing and matching */
4695/************************************************************************/
4696
4697
4698
4699
4700/* 1. Check on METHOD
4701 * We use the pre-parsed method if it is known, and store its number as an
4702 * integer. If it is unknown, we use the pointer and the length.
4703 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4704static int acl_parse_meth(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4705{
4706 int len, meth;
4707
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4708 len = strlen(*text);
4709 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4710
4711 pattern->val.i = meth;
4712 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4713 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4714 if (!pattern->ptr.str)
4715 return 0;
4716 pattern->len = len;
4717 }
4718 return 1;
4719}
4720
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4721static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4722acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, int dir,
4723 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4724{
4725 int meth;
4726 struct http_txn *txn = l7;
4727
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4728 if (!txn)
4729 return 0;
4730
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4731 if (txn->req.msg_state != HTTP_MSG_BODY)
4732 return 0;
4733
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4734 meth = txn->meth;
4735 test->i = meth;
4736 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4737 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4738 /* ensure the indexes are not affected */
4739 return 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4740 test->len = txn->req.sl.rq.m_l;
4741 test->ptr = txn->req.sol;
4742 }
4743 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4744 return 1;
4745}
4746
4747static int acl_match_meth(struct acl_test *test, struct acl_pattern *pattern)
4748{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4749 int icase;
4750
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4751 if (test->i != pattern->val.i)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4752 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4753
4754 if (test->i != HTTP_METH_OTHER)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4755 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4756
4757 /* Other method, we must compare the strings */
4758 if (pattern->len != test->len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4759 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4760
4761 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
4762 if ((icase && strncasecmp(pattern->ptr.str, test->ptr, test->len) != 0) ||
4763 (!icase && strncmp(pattern->ptr.str, test->ptr, test->len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4764 return ACL_PAT_FAIL;
4765 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4766}
4767
4768/* 2. Check on Request/Status Version
4769 * We simply compare strings here.
4770 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4771static int acl_parse_ver(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4772{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4773 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4774 if (!pattern->ptr.str)
4775 return 0;
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4776 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4777 return 1;
4778}
4779
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4780static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4781acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, int dir,
4782 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4783{
4784 struct http_txn *txn = l7;
4785 char *ptr;
4786 int len;
4787
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4788 if (!txn)
4789 return 0;
4790
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4791 if (txn->req.msg_state != HTTP_MSG_BODY)
4792 return 0;
4793
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4794 len = txn->req.sl.rq.v_l;
4795 ptr = txn->req.sol + txn->req.sl.rq.v - txn->req.som;
4796
4797 while ((len-- > 0) && (*ptr++ != '/'));
4798 if (len <= 0)
4799 return 0;
4800
4801 test->ptr = ptr;
4802 test->len = len;
4803
4804 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4805 return 1;
4806}
4807
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4808static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4809acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, int dir,
4810 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4811{
4812 struct http_txn *txn = l7;
4813 char *ptr;
4814 int len;
4815
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4816 if (!txn)
4817 return 0;
4818
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4819 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4820 return 0;
4821
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4822 len = txn->rsp.sl.st.v_l;
4823 ptr = txn->rsp.sol;
4824
4825 while ((len-- > 0) && (*ptr++ != '/'));
4826 if (len <= 0)
4827 return 0;
4828
4829 test->ptr = ptr;
4830 test->len = len;
4831
4832 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4833 return 1;
4834}
4835
4836/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4837static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4838acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, int dir,
4839 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4840{
4841 struct http_txn *txn = l7;
4842 char *ptr;
4843 int len;
4844
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4845 if (!txn)
4846 return 0;
4847
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4848 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4849 return 0;
4850
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4851 len = txn->rsp.sl.st.c_l;
4852 ptr = txn->rsp.sol + txn->rsp.sl.st.c - txn->rsp.som;
4853
4854 test->i = __strl2ui(ptr, len);
4855 test->flags = ACL_TEST_F_VOL_1ST;
4856 return 1;
4857}
4858
4859/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4860static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4861acl_fetch_url(struct proxy *px, struct session *l4, void *l7, int dir,
4862 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4863{
4864 struct http_txn *txn = l7;
4865
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4866 if (!txn)
4867 return 0;
4868
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4869 if (txn->req.msg_state != HTTP_MSG_BODY)
4870 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4871
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4872 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4873 /* ensure the indexes are not affected */
4874 return 0;
4875
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4876 test->len = txn->req.sl.rq.u_l;
4877 test->ptr = txn->req.sol + txn->req.sl.rq.u;
4878
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]4879 /* we do not need to set READ_ONLY because the data is in a buffer */
4880 test->flags = ACL_TEST_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4881 return 1;
4882}
4883
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4884static int
4885acl_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, int dir,
4886 struct acl_expr *expr, struct acl_test *test)
4887{
4888 struct http_txn *txn = l7;
4889
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4890 if (!txn)
4891 return 0;
4892
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4893 if (txn->req.msg_state != HTTP_MSG_BODY)
4894 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4895
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4896 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4897 /* ensure the indexes are not affected */
4898 return 0;
4899
4900 /* Parse HTTP request */
4901 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
4902 test->ptr = (void *)&((struct sockaddr_in *)&l4->srv_addr)->sin_addr;
4903 test->i = AF_INET;
4904
4905 /*
4906 * If we are parsing url in frontend space, we prepare backend stage
4907 * to not parse again the same url ! optimization lazyness...
4908 */
4909 if (px->options & PR_O_HTTP_PROXY)
4910 l4->flags |= SN_ADDR_SET;
4911
4912 test->flags = ACL_TEST_F_READ_ONLY;
4913 return 1;
4914}
4915
4916static int
4917acl_fetch_url_port(struct proxy *px, struct session *l4, void *l7, int dir,
4918 struct acl_expr *expr, struct acl_test *test)
4919{
4920 struct http_txn *txn = l7;
4921
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4922 if (!txn)
4923 return 0;
4924
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4925 if (txn->req.msg_state != HTTP_MSG_BODY)
4926 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4927
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4928 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4929 /* ensure the indexes are not affected */
4930 return 0;
4931
4932 /* Same optimization as url_ip */
4933 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
4934 test->i = ntohs(((struct sockaddr_in *)&l4->srv_addr)->sin_port);
4935
4936 if (px->options & PR_O_HTTP_PROXY)
4937 l4->flags |= SN_ADDR_SET;
4938
4939 test->flags = ACL_TEST_F_READ_ONLY;
4940 return 1;
4941}
4942
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4943/* 5. Check on HTTP header. A pointer to the beginning of the value is returned.
4944 * This generic function is used by both acl_fetch_chdr() and acl_fetch_shdr().
4945 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4946static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4947acl_fetch_hdr(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4948 struct acl_expr *expr, struct acl_test *test)
4949{
4950 struct http_txn *txn = l7;
4951 struct hdr_idx *idx = &txn->hdr_idx;
4952 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4953
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4954 if (!txn)
4955 return 0;
4956
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4957 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
4958 /* search for header from the beginning */
4959 ctx->idx = 0;
4960
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4961 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
4962 test->flags |= ACL_TEST_F_FETCH_MORE;
4963 test->flags |= ACL_TEST_F_VOL_HDR;
4964 test->len = ctx->vlen;
4965 test->ptr = (char *)ctx->line + ctx->val;
4966 return 1;
4967 }
4968
4969 test->flags &= ~ACL_TEST_F_FETCH_MORE;
4970 test->flags |= ACL_TEST_F_VOL_HDR;
4971 return 0;
4972}
4973
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4974static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4975acl_fetch_chdr(struct proxy *px, struct session *l4, void *l7, int dir,
4976 struct acl_expr *expr, struct acl_test *test)
4977{
4978 struct http_txn *txn = l7;
4979
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4980 if (!txn)
4981 return 0;
4982
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4983 if (txn->req.msg_state != HTTP_MSG_BODY)
4984 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4985
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4986 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4987 /* ensure the indexes are not affected */
4988 return 0;
4989
4990 return acl_fetch_hdr(px, l4, txn, txn->req.sol, expr, test);
4991}
4992
4993static int
4994acl_fetch_shdr(struct proxy *px, struct session *l4, void *l7, int dir,
4995 struct acl_expr *expr, struct acl_test *test)
4996{
4997 struct http_txn *txn = l7;
4998
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4999 if (!txn)
5000 return 0;
5001
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5002 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5003 return 0;
5004
5005 return acl_fetch_hdr(px, l4, txn, txn->rsp.sol, expr, test);
5006}
5007
5008/* 6. Check on HTTP header count. The number of occurrences is returned.
5009 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
5010 */
5011static int
5012acl_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5013 struct acl_expr *expr, struct acl_test *test)
5014{
5015 struct http_txn *txn = l7;
5016 struct hdr_idx *idx = &txn->hdr_idx;
5017 struct hdr_ctx ctx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5018 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5019
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5020 if (!txn)
5021 return 0;
5022
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5023 ctx.idx = 0;
5024 cnt = 0;
5025 while (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, &ctx))
5026 cnt++;
5027
5028 test->i = cnt;
5029 test->flags = ACL_TEST_F_VOL_HDR;
5030 return 1;
5031}
5032
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5033static int
5034acl_fetch_chdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5035 struct acl_expr *expr, struct acl_test *test)
5036{
5037 struct http_txn *txn = l7;
5038
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5039 if (!txn)
5040 return 0;
5041
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5042 if (txn->req.msg_state != HTTP_MSG_BODY)
5043 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5044
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5045 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5046 /* ensure the indexes are not affected */
5047 return 0;
5048
5049 return acl_fetch_hdr_cnt(px, l4, txn, txn->req.sol, expr, test);
5050}
5051
5052static int
5053acl_fetch_shdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5054 struct acl_expr *expr, struct acl_test *test)
5055{
5056 struct http_txn *txn = l7;
5057
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5058 if (!txn)
5059 return 0;
5060
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5061 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5062 return 0;
5063
5064 return acl_fetch_hdr_cnt(px, l4, txn, txn->rsp.sol, expr, test);
5065}
5066
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5067/* 7. Check on HTTP header's integer value. The integer value is returned.
5068 * FIXME: the type is 'int', it may not be appropriate for everything.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5069 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5070 */
5071static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5072acl_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5073 struct acl_expr *expr, struct acl_test *test)
5074{
5075 struct http_txn *txn = l7;
5076 struct hdr_idx *idx = &txn->hdr_idx;
5077 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5078
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5079 if (!txn)
5080 return 0;
5081
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5082 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5083 /* search for header from the beginning */
5084 ctx->idx = 0;
5085
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5086 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5087 test->flags |= ACL_TEST_F_FETCH_MORE;
5088 test->flags |= ACL_TEST_F_VOL_HDR;
5089 test->i = strl2ic((char *)ctx->line + ctx->val, ctx->vlen);
5090 return 1;
5091 }
5092
5093 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5094 test->flags |= ACL_TEST_F_VOL_HDR;
5095 return 0;
5096}
5097
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5098static int
5099acl_fetch_chdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5100 struct acl_expr *expr, struct acl_test *test)
5101{
5102 struct http_txn *txn = l7;
5103
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5104 if (!txn)
5105 return 0;
5106
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5107 if (txn->req.msg_state != HTTP_MSG_BODY)
5108 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5109
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5110 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5111 /* ensure the indexes are not affected */
5112 return 0;
5113
5114 return acl_fetch_hdr_val(px, l4, txn, txn->req.sol, expr, test);
5115}
5116
5117static int
5118acl_fetch_shdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5119 struct acl_expr *expr, struct acl_test *test)
5120{
5121 struct http_txn *txn = l7;
5122
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5123 if (!txn)
5124 return 0;
5125
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5126 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5127 return 0;
5128
5129 return acl_fetch_hdr_val(px, l4, txn, txn->rsp.sol, expr, test);
5130}
5131
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]5132/* 7. Check on HTTP header's IPv4 address value. The IPv4 address is returned.
5133 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
5134 */
5135static int
5136acl_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, char *sol,
5137 struct acl_expr *expr, struct acl_test *test)
5138{
5139 struct http_txn *txn = l7;
5140 struct hdr_idx *idx = &txn->hdr_idx;
5141 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
5142
5143 if (!txn)
5144 return 0;
5145
5146 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5147 /* search for header from the beginning */
5148 ctx->idx = 0;
5149
5150 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5151 test->flags |= ACL_TEST_F_FETCH_MORE;
5152 test->flags |= ACL_TEST_F_VOL_HDR;
5153 /* Same optimization as url_ip */
5154 memset(&l4->srv_addr.sin_addr, 0, sizeof(l4->srv_addr.sin_addr));
5155 url2ip((char *)ctx->line + ctx->val, &l4->srv_addr.sin_addr);
5156 test->ptr = (void *)&l4->srv_addr.sin_addr;
5157 test->i = AF_INET;
5158 return 1;
5159 }
5160
5161 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5162 test->flags |= ACL_TEST_F_VOL_HDR;
5163 return 0;
5164}
5165
5166static int
5167acl_fetch_chdr_ip(struct proxy *px, struct session *l4, void *l7, int dir,
5168 struct acl_expr *expr, struct acl_test *test)
5169{
5170 struct http_txn *txn = l7;
5171
5172 if (!txn)
5173 return 0;
5174
5175 if (txn->req.msg_state != HTTP_MSG_BODY)
5176 return 0;
5177
5178 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5179 /* ensure the indexes are not affected */
5180 return 0;
5181
5182 return acl_fetch_hdr_ip(px, l4, txn, txn->req.sol, expr, test);
5183}
5184
5185static int
5186acl_fetch_shdr_ip(struct proxy *px, struct session *l4, void *l7, int dir,
5187 struct acl_expr *expr, struct acl_test *test)
5188{
5189 struct http_txn *txn = l7;
5190
5191 if (!txn)
5192 return 0;
5193
5194 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5195 return 0;
5196
5197 return acl_fetch_hdr_ip(px, l4, txn, txn->rsp.sol, expr, test);
5198}
5199
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5200/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
5201 * the first '/' after the possible hostname, and ends before the possible '?'.
5202 */
5203static int
5204acl_fetch_path(struct proxy *px, struct session *l4, void *l7, int dir,
5205 struct acl_expr *expr, struct acl_test *test)
5206{
5207 struct http_txn *txn = l7;
5208 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5209
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5210 if (!txn)
5211 return 0;
5212
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5213 if (txn->req.msg_state != HTTP_MSG_BODY)
5214 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5215
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5216 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5217 /* ensure the indexes are not affected */
5218 return 0;
5219
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5220 end = txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
5221 ptr = http_get_path(txn);
5222 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5223 return 0;
5224
5225 /* OK, we got the '/' ! */
5226 test->ptr = ptr;
5227
5228 while (ptr < end && *ptr != '?')
5229 ptr++;
5230
5231 test->len = ptr - test->ptr;
5232
5233 /* we do not need to set READ_ONLY because the data is in a buffer */
5234 test->flags = ACL_TEST_F_VOL_1ST;
5235 return 1;
5236}
5237
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]5238static int
5239acl_fetch_proto_http(struct proxy *px, struct session *s, void *l7, int dir,
5240 struct acl_expr *expr, struct acl_test *test)
5241{
5242 struct buffer *req = s->req;
5243 struct http_txn *txn = &s->txn;
5244 struct http_msg *msg = &txn->req;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5245
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]5246 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
5247 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
5248 */
5249
5250 if (!s || !req)
5251 return 0;
5252
5253 if (unlikely(msg->msg_state == HTTP_MSG_BODY)) {
5254 /* Already decoded as OK */
5255 test->flags |= ACL_TEST_F_SET_RES_PASS;
5256 return 1;
5257 }
5258
5259 /* Try to decode HTTP request */
5260 if (likely(req->lr < req->r))
5261 http_msg_analyzer(req, msg, &txn->hdr_idx);
5262
5263 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
5264 if ((msg->msg_state == HTTP_MSG_ERROR) || (req->flags & BF_FULL)) {
5265 test->flags |= ACL_TEST_F_SET_RES_FAIL;
5266 return 1;
5267 }
5268 /* wait for final state */
5269 test->flags |= ACL_TEST_F_MAY_CHANGE;
5270 return 0;
5271 }
5272
5273 /* OK we got a valid HTTP request. We have some minor preparation to
5274 * perform so that further checks can rely on HTTP tests.
5275 */
5276 msg->sol = req->data + msg->som;
5277 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
5278 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
5279 s->flags |= SN_REDIRECTABLE;
5280
5281 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(req, msg, txn)) {
5282 test->flags |= ACL_TEST_F_SET_RES_FAIL;
5283 return 1;
5284 }
5285
5286 test->flags |= ACL_TEST_F_SET_RES_PASS;
5287 return 1;
5288}
5289
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5290
5291/************************************************************************/
5292/* All supported keywords must be declared here. */
5293/************************************************************************/
5294
5295/* Note: must not be declared <const> as its list will be overwritten */
5296static struct acl_kw_list acl_kws = {{ },{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]5297 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT },
5298
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5299 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT },
5300 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5301 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE },
5302 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5303
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5304 { "url", acl_parse_str, acl_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5305 { "url_beg", acl_parse_str, acl_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
5306 { "url_end", acl_parse_str, acl_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE },
5307 { "url_sub", acl_parse_str, acl_fetch_url, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
5308 { "url_dir", acl_parse_str, acl_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
5309 { "url_dom", acl_parse_str, acl_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
5310 { "url_reg", acl_parse_reg, acl_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
5311 { "url_ip", acl_parse_ip, acl_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE },
5312 { "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]5313
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5314 /* note: we should set hdr* to use ACL_USE_HDR_VOLATILE, and chdr* to use L7REQ_VOLATILE */
5315 { "hdr", acl_parse_str, acl_fetch_chdr, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5316 { "hdr_reg", acl_parse_reg, acl_fetch_chdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
5317 { "hdr_beg", acl_parse_str, acl_fetch_chdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
5318 { "hdr_end", acl_parse_str, acl_fetch_chdr, acl_match_end, ACL_USE_L7REQ_VOLATILE },
5319 { "hdr_sub", acl_parse_str, acl_fetch_chdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
5320 { "hdr_dir", acl_parse_str, acl_fetch_chdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
5321 { "hdr_dom", acl_parse_str, acl_fetch_chdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
5322 { "hdr_cnt", acl_parse_int, acl_fetch_chdr_cnt,acl_match_int, ACL_USE_L7REQ_VOLATILE },
5323 { "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]5324 { "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]5325
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5326 { "shdr", acl_parse_str, acl_fetch_shdr, acl_match_str, ACL_USE_L7RTR_VOLATILE },
5327 { "shdr_reg", acl_parse_reg, acl_fetch_shdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE },
5328 { "shdr_beg", acl_parse_str, acl_fetch_shdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE },
5329 { "shdr_end", acl_parse_str, acl_fetch_shdr, acl_match_end, ACL_USE_L7RTR_VOLATILE },
5330 { "shdr_sub", acl_parse_str, acl_fetch_shdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE },
5331 { "shdr_dir", acl_parse_str, acl_fetch_shdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE },
5332 { "shdr_dom", acl_parse_str, acl_fetch_shdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE },
5333 { "shdr_cnt", acl_parse_int, acl_fetch_shdr_cnt,acl_match_int, ACL_USE_L7RTR_VOLATILE },
5334 { "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]5335 { "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]5336
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5337 { "path", acl_parse_str, acl_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5338 { "path_reg", acl_parse_reg, acl_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
5339 { "path_beg", acl_parse_str, acl_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
5340 { "path_end", acl_parse_str, acl_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE },
5341 { "path_sub", acl_parse_str, acl_fetch_path, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
5342 { "path_dir", acl_parse_str, acl_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
5343 { "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]5344
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]5345 { NULL, NULL, NULL, NULL },
5346
5347#if 0
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5348 { "line", acl_parse_str, acl_fetch_line, acl_match_str },
5349 { "line_reg", acl_parse_reg, acl_fetch_line, acl_match_reg },
5350 { "line_beg", acl_parse_str, acl_fetch_line, acl_match_beg },
5351 { "line_end", acl_parse_str, acl_fetch_line, acl_match_end },
5352 { "line_sub", acl_parse_str, acl_fetch_line, acl_match_sub },
5353 { "line_dir", acl_parse_str, acl_fetch_line, acl_match_dir },
5354 { "line_dom", acl_parse_str, acl_fetch_line, acl_match_dom },
5355
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5356 { "cook", acl_parse_str, acl_fetch_cook, acl_match_str },
5357 { "cook_reg", acl_parse_reg, acl_fetch_cook, acl_match_reg },
5358 { "cook_beg", acl_parse_str, acl_fetch_cook, acl_match_beg },
5359 { "cook_end", acl_parse_str, acl_fetch_cook, acl_match_end },
5360 { "cook_sub", acl_parse_str, acl_fetch_cook, acl_match_sub },
5361 { "cook_dir", acl_parse_str, acl_fetch_cook, acl_match_dir },
5362 { "cook_dom", acl_parse_str, acl_fetch_cook, acl_match_dom },
5363 { "cook_pst", acl_parse_none, acl_fetch_cook, acl_match_pst },
5364
5365 { "auth_user", acl_parse_str, acl_fetch_user, acl_match_str },
5366 { "auth_regex", acl_parse_reg, acl_fetch_user, acl_match_reg },
5367 { "auth_clear", acl_parse_str, acl_fetch_auth, acl_match_str },
5368 { "auth_md5", acl_parse_str, acl_fetch_auth, acl_match_md5 },
5369 { NULL, NULL, NULL, NULL },
5370#endif
5371}};
5372
5373
5374__attribute__((constructor))
5375static void __http_protocol_init(void)
5376{
5377 acl_register_keywords(&acl_kws);
5378}
5379
5380
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5381/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5382 * Local variables:
5383 * c-indent-level: 8
5384 * c-basic-offset: 8
5385 * End:
5386 */