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git01.mediatek.com / haproxy / b8c82c295b1f7898543a35d6e02af498a714d7e5 / . / src / proto_http.c
blob: a98f2a52bbbe0e463cbe578aec00e21a77266583 [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 Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]1773 struct hdr_ctx ctx;
1774 int conn_ka, conn_cl;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1775
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]1776 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
1777 now_ms, __FUNCTION__,
1778 s,
1779 req,
1780 req->rex, req->wex,
1781 req->flags,
1782 req->l,
1783 req->analysers);
1784
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]1785 /* we're speaking HTTP here, so let's speak HTTP to the client */
1786 s->srv_error = http_return_srv_error;
1787
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1788 if (likely(req->lr < req->r))
1789 http_msg_analyzer(req, msg, &txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1790
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1791 /* 1: we might have to print this header in debug mode */
1792 if (unlikely((global.mode & MODE_DEBUG) &&
1793 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
1794 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
1795 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1796
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1797 sol = req->data + msg->som;
1798 eol = sol + msg->sl.rq.l;
1799 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1800
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1801 sol += hdr_idx_first_pos(&txn->hdr_idx);
1802 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1803
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1804 while (cur_idx) {
1805 eol = sol + txn->hdr_idx.v[cur_idx].len;
1806 debug_hdr("clihdr", s, sol, eol);
1807 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
1808 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1809 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1810 }
1811
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1812
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1813 /*
1814 * Now we quickly check if we have found a full valid request.
1815 * If not so, we check the FD and buffer states before leaving.
1816 * A full request is indicated by the fact that we have seen
1817 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
1818 * requests are checked first.
1819 *
1820 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1821
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1822 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1823 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1824 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1825 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1826 if (unlikely(msg->msg_state == HTTP_MSG_ERROR))
1827 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1828
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1829 /* 1: Since we are in header mode, if there's no space
1830 * left for headers, we won't be able to free more
1831 * later, so the session will never terminate. We
1832 * must terminate it now.
1833 */
1834 if (unlikely(req->flags & BF_FULL)) {
1835 /* FIXME: check if URI is set and return Status
1836 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1837 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1838 goto return_bad_req;
1839 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1840
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1841 /* 2: have we encountered a read error ? */
1842 else if (req->flags & BF_READ_ERROR) {
1843 /* we cannot return any message on error */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]1844 if (msg->err_pos >= 0)
1845 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1846 msg->msg_state = HTTP_MSG_ERROR;
1847 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]1848
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]1849 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]1850 if (s->listener->counters)
1851 s->listener->counters->failed_req++;
1852
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1853 if (!(s->flags & SN_ERR_MASK))
1854 s->flags |= SN_ERR_CLICL;
1855 if (!(s->flags & SN_FINST_MASK))
1856 s->flags |= SN_FINST_R;
1857 return 0;
1858 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]1859
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1860 /* 3: has the read timeout expired ? */
1861 else if (req->flags & BF_READ_TIMEOUT || tick_is_expired(req->analyse_exp, now_ms)) {
1862 /* read timeout : give up with an error message. */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]1863 if (msg->err_pos >= 0)
1864 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1865 txn->status = 408;
1866 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_408));
1867 msg->msg_state = HTTP_MSG_ERROR;
1868 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]1869
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]1870 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]1871 if (s->listener->counters)
1872 s->listener->counters->failed_req++;
1873
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1874 if (!(s->flags & SN_ERR_MASK))
1875 s->flags |= SN_ERR_CLITO;
1876 if (!(s->flags & SN_FINST_MASK))
1877 s->flags |= SN_FINST_R;
1878 return 0;
1879 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1880
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1881 /* 4: have we encountered a close ? */
1882 else if (req->flags & BF_SHUTR) {
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]1883 if (msg->err_pos >= 0)
1884 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1885 txn->status = 400;
1886 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
1887 msg->msg_state = HTTP_MSG_ERROR;
1888 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]1889
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]1890 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]1891 if (s->listener->counters)
1892 s->listener->counters->failed_req++;
1893
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1894 if (!(s->flags & SN_ERR_MASK))
1895 s->flags |= SN_ERR_CLICL;
1896 if (!(s->flags & SN_FINST_MASK))
1897 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]1898 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1899 }
1900
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]1901 buffer_dont_connect(req);
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]1902 req->flags |= BF_READ_DONTWAIT; /* try to get back here ASAP */
1903
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1904 /* just set the request timeout once at the beginning of the request */
1905 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]1906 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1907
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1908 /* we're not ready yet */
1909 return 0;
1910 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1911
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1912 /* OK now we have a complete HTTP request with indexed headers. Let's
1913 * complete the request parsing by setting a few fields we will need
1914 * later.
1915 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1916
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1917 /* Maybe we found in invalid header name while we were configured not
1918 * to block on that, so we have to capture it now.
1919 */
1920 if (unlikely(msg->err_pos >= 0))
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]1921 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
1922
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1923 /* ensure we keep this pointer to the beginning of the message */
1924 msg->sol = req->data + msg->som;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1925
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1926 /*
1927 * 1: identify the method
1928 */
1929 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
1930
1931 /* we can make use of server redirect on GET and HEAD */
1932 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
1933 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]1934
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1935 /*
1936 * 2: check if the URI matches the monitor_uri.
1937 * We have to do this for every request which gets in, because
1938 * the monitor-uri is defined by the frontend.
1939 */
1940 if (unlikely((s->fe->monitor_uri_len != 0) &&
1941 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
1942 !memcmp(&req->data[msg->sl.rq.u],
1943 s->fe->monitor_uri,
1944 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1945 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1946 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1947 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1948 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1949
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1950 s->flags |= SN_MONITOR;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1951
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1952 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]1953 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
1954 int ret = acl_exec_cond(cond, s->fe, s, txn, ACL_DIR_REQ);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1955
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1956 ret = acl_pass(ret);
1957 if (cond->pol == ACL_COND_UNLESS)
1958 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1959
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1960 if (ret) {
1961 /* we fail this request, let's return 503 service unavail */
1962 txn->status = 503;
1963 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_503));
1964 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1965 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1966 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]1967
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1968 /* nothing to fail, let's reply normaly */
1969 txn->status = 200;
1970 stream_int_retnclose(req->prod, &http_200_chunk);
1971 goto return_prx_cond;
1972 }
1973
1974 /*
1975 * 3: Maybe we have to copy the original REQURI for the logs ?
1976 * Note: we cannot log anymore if the request has been
1977 * classified as invalid.
1978 */
1979 if (unlikely(s->logs.logwait & LW_REQ)) {
1980 /* we have a complete HTTP request that we must log */
1981 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
1982 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1983
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1984 if (urilen >= REQURI_LEN)
1985 urilen = REQURI_LEN - 1;
1986 memcpy(txn->uri, &req->data[msg->som], urilen);
1987 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1988
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1989 if (!(s->logs.logwait &= ~LW_REQ))
1990 s->do_log(s);
1991 } else {
1992 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1993 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1994 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1995
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]1996 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1997 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(req, msg, txn))
1998 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1999
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2000 /* 5: we may need to capture headers */
2001 if (unlikely((s->logs.logwait & LW_REQHDR) && s->fe->req_cap))
2002 capture_headers(req->data + msg->som, &txn->hdr_idx,
2003 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2004
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2005 /* 6: determine if we have a transfer-encoding or content-length.
2006 * RFC2616 #4.4 states that :
2007 * - If a Transfer-Encoding header field is present and has any value
2008 * other than "identity", then the transfer-length is defined by use
2009 * of the "chunked" transfer-coding ;
2010 *
2011 * - If a Content-Length header field is present, its decimal value in
2012 * OCTETs represents both the entity-length and the transfer-length.
2013 * If a message is received with both a Transfer-Encoding header
2014 * field and a Content-Length header field, the latter MUST be ignored.
2015 *
2016 * - If a request contains a message-body and a Content-Length is not
2017 * given, the server SHOULD respond with 400 (bad request) if it
2018 * cannot determine the length of the message, or with 411 (length
2019 * required) if it wishes to insist on receiving a valid Content-Length.
2020 */
2021
2022 /* FIXME: chunked encoding is HTTP/1.1 only */
2023 ctx.idx = 0;
2024 while (http_find_header2("Transfer-Encoding", 17, msg->sol, &txn->hdr_idx, &ctx)) {
2025 if (ctx.vlen == 8 && strncasecmp(ctx.line + ctx.val, "identity", 8) == 0)
2026 continue;
2027 txn->flags |= TX_REQ_TE_CHNK;
2028 break;
2029 }
2030
2031 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
2032 ctx.idx = 0;
2033 while (!(txn->flags & TX_REQ_TE_CHNK) &&
2034 http_find_header2("Content-Length", 14, msg->sol, &txn->hdr_idx, &ctx)) {
2035 signed long long cl;
2036
2037 if (!ctx.vlen)
2038 goto return_bad_req;
2039
2040 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl))
2041 goto return_bad_req; /* parse failure */
2042
2043 if (cl < 0)
2044 goto return_bad_req;
2045
2046 if ((txn->flags & TX_REQ_CNT_LEN) && (msg->hdr_content_len != cl))
2047 goto return_bad_req; /* already specified, was different */
2048
2049 txn->flags |= TX_REQ_CNT_LEN;
2050 msg->hdr_content_len = cl;
2051 }
2052
2053 /* Determine if the client wishes keep-alive or close.
2054 * RFC2616 #8.1.2 and #14.10 state that HTTP/1.1 and above connections
2055 * are persistent unless "Connection: close" is explicitly specified.
2056 * RFC2616 #19.6.2 refers to RFC2068 for HTTP/1.0 persistent connections.
2057 * RFC2068 #19.7.1 states that HTTP/1.0 clients are not persistent unless
2058 * they explicitly specify "Connection: keep-alive", regardless of any
2059 * optional "keep-alive" header.
2060 */
2061
2062 /* FIXME: should we also remove any header specified in "connection" ? */
2063 conn_ka = conn_cl = 0;
2064 ctx.idx = 0;
2065 while (http_find_header2("Connection", 10, msg->sol, &txn->hdr_idx, &ctx)) {
2066 if (ctx.vlen == 5 && strncasecmp(ctx.line + ctx.val, "close", 5) == 0)
2067 conn_cl = 1;
2068 else if (ctx.vlen == 10 && strncasecmp(ctx.line + ctx.val, "keep-alive", 10) == 0)
2069 conn_ka = 1;
2070 }
2071
Willy Tarreau75a5fef2009-10-18 23:43:57 +0200[diff] [blame]2072 /* prepare flags for this transaction */
2073 txn->flags |= (TX_CLI_CONN_KA | TX_SRV_CONN_KA);
2074 txn->flags |= (TX_CLI_CONN_KA | TX_SRV_CONN_KA);
2075
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2076 if ((msg->sl.rq.v_l == 8) &&
2077 (req->data[msg->som + msg->sl.rq.v + 5] == '1') &&
2078 (req->data[msg->som + msg->sl.rq.v + 7] == '0')) {
2079 /* HTTP/1.0 */
Willy Tarreau75a5fef2009-10-18 23:43:57 +0200[diff] [blame]2080 if (!conn_ka)
2081 txn->flags &= ~(TX_CLI_CONN_KA | TX_SRV_CONN_KA);
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2082 } else {
Willy Tarreau75a5fef2009-10-18 23:43:57 +0200[diff] [blame]2083 /* HTTP/1.1 */
2084 if (conn_cl)
2085 txn->flags &= ~(TX_CLI_CONN_KA | TX_SRV_CONN_KA);
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2086 }
2087
2088 /* we can mark the connection as non-persistent if needed */
2089 if (!(txn->flags & TX_SRV_CONN_KA))
2090 s->flags |= SN_CONN_CLOSED;
2091
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2092 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2093 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2094 req->analyse_exp = TICK_ETERNITY;
2095 return 1;
2096
2097 return_bad_req:
2098 /* We centralize bad requests processing here */
2099 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2100 /* we detected a parsing error. We want to archive this request
2101 * in the dedicated proxy area for later troubleshooting.
2102 */
2103 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
2104 }
2105
2106 txn->req.msg_state = HTTP_MSG_ERROR;
2107 txn->status = 400;
2108 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2109
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2110 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2111 if (s->listener->counters)
2112 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2113
2114 return_prx_cond:
2115 if (!(s->flags & SN_ERR_MASK))
2116 s->flags |= SN_ERR_PRXCOND;
2117 if (!(s->flags & SN_FINST_MASK))
2118 s->flags |= SN_FINST_R;
2119
2120 req->analysers = 0;
2121 req->analyse_exp = TICK_ETERNITY;
2122 return 0;
2123}
2124
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2125/* This stream analyser runs all HTTP request processing which is common to
2126 * frontends and backends, which means blocking ACLs, filters, connection-close,
2127 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2128 * 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]2129 * either needs more data or wants to immediately abort the request (eg: deny,
2130 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2131 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2132int 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]2133{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2134 struct http_txn *txn = &s->txn;
2135 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2136 struct acl_cond *cond;
2137 struct redirect_rule *rule;
2138 int cur_idx;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2139
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2140 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
2141 /* we need more data */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2142 buffer_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2143 return 0;
2144 }
2145
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2146 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2147 req->analyse_exp = TICK_ETERNITY;
2148
2149 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
2150 now_ms, __FUNCTION__,
2151 s,
2152 req,
2153 req->rex, req->wex,
2154 req->flags,
2155 req->l,
2156 req->analysers);
2157
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2158 /* first check whether we have some ACLs set to block this request */
2159 list_for_each_entry(cond, &px->block_cond, list) {
2160 int ret = acl_exec_cond(cond, px, s, txn, ACL_DIR_REQ);
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]2161
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2162 ret = acl_pass(ret);
2163 if (cond->pol == ACL_COND_UNLESS)
2164 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]2165
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2166 if (ret) {
2167 txn->status = 403;
2168 /* let's log the request time */
2169 s->logs.tv_request = now;
2170 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_403));
2171 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2172 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2173 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2174
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2175 /* try headers filters */
2176 if (px->req_exp != NULL) {
2177 if (apply_filters_to_request(s, req, px->req_exp) < 0)
2178 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2179
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2180 /* has the request been denied ? */
2181 if (txn->flags & TX_CLDENY) {
2182 /* no need to go further */
2183 txn->status = 403;
2184 /* let's log the request time */
2185 s->logs.tv_request = now;
2186 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_403));
2187 goto return_prx_cond;
2188 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2189
2190 /* When a connection is tarpitted, we use the tarpit timeout,
2191 * which may be the same as the connect timeout if unspecified.
2192 * If unset, then set it to zero because we really want it to
2193 * eventually expire. We build the tarpit as an analyser.
2194 */
2195 if (txn->flags & TX_CLTARPIT) {
2196 buffer_erase(s->req);
2197 /* wipe the request out so that we can drop the connection early
2198 * if the client closes first.
2199 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2200 buffer_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]2201 req->analysers = 0; /* remove switching rules etc... */
2202 req->analysers |= AN_REQ_HTTP_TARPIT;
2203 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
2204 if (!req->analyse_exp)
2205 req->analyse_exp = tick_add(now_ms, 0);
2206 return 1;
2207 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2208 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2209
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]2210 /* We might have to check for "Connection:". The test for persistent
2211 * connections has already been performed, so we only enter here if
2212 * we are certain the connection is persistent.
2213 */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2214 if (((s->fe->options | s->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
2215 !(s->flags & SN_CONN_CLOSED)) {
2216 char *cur_ptr, *cur_end, *cur_next;
2217 int old_idx, delta, val;
2218 struct hdr_idx_elem *cur_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2219
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2220 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
2221 old_idx = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2222
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2223 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
2224 cur_hdr = &txn->hdr_idx.v[cur_idx];
2225 cur_ptr = cur_next;
2226 cur_end = cur_ptr + cur_hdr->len;
2227 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2228
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2229 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
2230 if (val) {
2231 /* 3 possibilities :
2232 * - we have already set Connection: close,
2233 * so we remove this line.
2234 * - we have not yet set Connection: close,
2235 * but this line indicates close. We leave
2236 * it untouched and set the flag.
2237 * - we have not yet set Connection: close,
2238 * and this line indicates non-close. We
2239 * replace it.
2240 */
2241 if (s->flags & SN_CONN_CLOSED) {
2242 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
2243 txn->req.eoh += delta;
2244 cur_next += delta;
2245 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
2246 txn->hdr_idx.used--;
2247 cur_hdr->len = 0;
2248 } else {
2249 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
2250 delta = buffer_replace2(req, cur_ptr + val, cur_end,
2251 "close", 5);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2252 cur_next += delta;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2253 cur_hdr->len += delta;
2254 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2255 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2256 s->flags |= SN_CONN_CLOSED;
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]2257 txn->flags &= ~TX_SRV_CONN_KA; /* keep-alive closed on server side */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2258 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2259 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2260 old_idx = cur_idx;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2261 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]2262
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]2263 /* if there is no "Connection: keep-alive" header left and we're
2264 * in HTTP/1.0, then non-persistent connection is implied */
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]2265 if (!(s->flags & SN_CONN_CLOSED) && (msg->sl.rq.v_l == 8) &&
2266 (req->data[msg->som + msg->sl.rq.v + 5] == '1') &&
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]2267 (req->data[msg->som + msg->sl.rq.v + 7] == '0')) {
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]2268 s->flags |= SN_CONN_CLOSED;
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]2269 txn->flags &= ~TX_SRV_CONN_KA; /* keep-alive closed on server side */
2270 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2271 }
2272 /* add request headers from the rule sets in the same order */
2273 for (cur_idx = 0; cur_idx < px->nb_reqadd; cur_idx++) {
2274 if (unlikely(http_header_add_tail(req,
2275 &txn->req,
2276 &txn->hdr_idx,
2277 px->req_add[cur_idx])) < 0)
2278 goto return_bad_req;
2279 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2280
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2281 /* check if stats URI was requested, and if an auth is needed */
2282 if (px->uri_auth != NULL &&
2283 (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)) {
2284 /* we have to check the URI and auth for this request.
2285 * FIXME!!! that one is rather dangerous, we want to
2286 * make it follow standard rules (eg: clear req->analysers).
2287 */
2288 if (stats_check_uri_auth(s, px)) {
2289 req->analysers = 0;
2290 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2291 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2292 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2293
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2294 /* check whether we have some ACLs set to redirect this request */
2295 list_for_each_entry(rule, &px->redirect_rules, list) {
2296 int ret = acl_exec_cond(rule->cond, px, s, txn, ACL_DIR_REQ);
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2297
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2298 ret = acl_pass(ret);
2299 if (rule->cond->pol == ACL_COND_UNLESS)
2300 ret = !ret;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2301
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2302 if (ret) {
2303 struct chunk rdr = { trash, 0 };
2304 const char *msg_fmt;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2305
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2306 /* build redirect message */
2307 switch(rule->code) {
2308 case 303:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2309 msg_fmt = HTTP_303;
2310 break;
2311 case 301:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2312 msg_fmt = HTTP_301;
2313 break;
2314 case 302:
2315 default:
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2316 msg_fmt = HTTP_302;
2317 break;
2318 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2319
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]2320 if (unlikely(chunk_strcpy(&rdr, msg_fmt)))
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2321 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2322
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2323 switch(rule->type) {
2324 case REDIRECT_TYPE_PREFIX: {
2325 const char *path;
2326 int pathlen;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2327
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2328 path = http_get_path(txn);
2329 /* build message using path */
2330 if (path) {
2331 pathlen = txn->req.sl.rq.u_l + (txn->req.sol+txn->req.sl.rq.u) - path;
2332 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
2333 int qs = 0;
2334 while (qs < pathlen) {
2335 if (path[qs] == '?') {
2336 pathlen = qs;
2337 break;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2338 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2339 qs++;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2340 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2341 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2342 } else {
2343 path = "/";
2344 pathlen = 1;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2345 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2346
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]2347 if (rdr.len + rule->rdr_len + pathlen > rdr.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2348 goto return_bad_req;
2349
2350 /* add prefix. Note that if prefix == "/", we don't want to
2351 * add anything, otherwise it makes it hard for the user to
2352 * configure a self-redirection.
2353 */
2354 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2355 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
2356 rdr.len += rule->rdr_len;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2357 }
2358
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2359 /* add path */
2360 memcpy(rdr.str + rdr.len, path, pathlen);
2361 rdr.len += pathlen;
2362 break;
2363 }
2364 case REDIRECT_TYPE_LOCATION:
2365 default:
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]2366 if (rdr.len + rule->rdr_len > rdr.size - 4)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2367 goto return_bad_req;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2368
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2369 /* add location */
2370 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
2371 rdr.len += rule->rdr_len;
2372 break;
2373 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2374
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2375 if (rule->cookie_len) {
2376 memcpy(rdr.str + rdr.len, "\r\nSet-Cookie: ", 14);
2377 rdr.len += 14;
2378 memcpy(rdr.str + rdr.len, rule->cookie_str, rule->cookie_len);
2379 rdr.len += rule->cookie_len;
2380 memcpy(rdr.str + rdr.len, "\r\n", 2);
2381 rdr.len += 2;
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2382 }
Willy Tarreau06b917c2009-07-06 16:34:52 +0200[diff] [blame]2383
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2384 /* add end of headers */
2385 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
2386 rdr.len += 4;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2387
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2388 txn->status = rule->code;
2389 /* let's log the request time */
2390 s->logs.tv_request = now;
2391 stream_int_retnclose(req->prod, &rdr);
2392 goto return_prx_cond;
2393 }
2394 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2395
Willy Tarreauf1ba4b32009-10-17 14:37:52 +0200[diff] [blame]2396 /* We can shut read side if "connection: close" && !abort_on_close && !content-length */
Willy Tarreau349a0f62009-10-18 21:17:42 +0200[diff] [blame]2397 if ((s->flags & SN_CONN_CLOSED) && !(s->be->options & PR_O_ABRT_CLOSE) &&
2398 !(txn->flags & TX_REQ_TE_CHNK) && !txn->req.hdr_content_len && (txn->meth < HTTP_METH_CONNECT))
2399 req->flags |= BF_DONT_READ;
Willy Tarreauf1ba4b32009-10-17 14:37:52 +0200[diff] [blame]2400
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2401 /* that's OK for us now, let's move on to next analysers */
2402 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2403
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2404 return_bad_req:
2405 /* We centralize bad requests processing here */
2406 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2407 /* we detected a parsing error. We want to archive this request
2408 * in the dedicated proxy area for later troubleshooting.
2409 */
2410 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
2411 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2412
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2413 txn->req.msg_state = HTTP_MSG_ERROR;
2414 txn->status = 400;
2415 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2416
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2417 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2418 if (s->listener->counters)
2419 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]2420
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2421 return_prx_cond:
2422 if (!(s->flags & SN_ERR_MASK))
2423 s->flags |= SN_ERR_PRXCOND;
2424 if (!(s->flags & SN_FINST_MASK))
2425 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]2426
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2427 req->analysers = 0;
2428 req->analyse_exp = TICK_ETERNITY;
2429 return 0;
2430}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2431
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2432/* This function performs all the processing enabled for the current request.
2433 * It returns 1 if the processing can continue on next analysers, or zero if it
2434 * needs more data, encounters an error, or wants to immediately abort the
2435 * request. It relies on buffers flags, and updates s->req->analysers.
2436 */
2437int http_process_request(struct session *s, struct buffer *req, int an_bit)
2438{
2439 struct http_txn *txn = &s->txn;
2440 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2441
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2442 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
2443 /* we need more data */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2444 buffer_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2445 return 0;
2446 }
2447
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]2448 req->analysers &= ~an_bit;
2449 req->analyse_exp = TICK_ETERNITY;
2450
2451 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
2452 now_ms, __FUNCTION__,
2453 s,
2454 req,
2455 req->rex, req->wex,
2456 req->flags,
2457 req->l,
2458 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2459
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2460 /*
2461 * Right now, we know that we have processed the entire headers
2462 * and that unwanted requests have been filtered out. We can do
2463 * whatever we want with the remaining request. Also, now we
2464 * may have separate values for ->fe, ->be.
2465 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2466
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2467 /*
2468 * If HTTP PROXY is set we simply get remote server address
2469 * parsing incoming request.
2470 */
2471 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
2472 url2sa(req->data + msg->sl.rq.u, msg->sl.rq.u_l, &s->srv_addr);
2473 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2474
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2475 /*
2476 * 7: the appsession cookie was looked up very early in 1.2,
2477 * so let's do the same now.
2478 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2479
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2480 /* It needs to look into the URI */
2481 if (s->be->appsession_name) {
2482 get_srv_from_appsession(s, &req->data[msg->som], msg->sl.rq.l);
2483 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2484
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2485 /*
2486 * 8: Now we can work with the cookies.
2487 * Note that doing so might move headers in the request, but
2488 * the fields will stay coherent and the URI will not move.
2489 * This should only be performed in the backend.
2490 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]2491 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2492 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
2493 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2494
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2495 /*
2496 * 9: add X-Forwarded-For if either the frontend or the backend
2497 * asks for it.
2498 */
2499 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
2500 if (s->cli_addr.ss_family == AF_INET) {
2501 /* Add an X-Forwarded-For header unless the source IP is
2502 * in the 'except' network range.
2503 */
2504 if ((!s->fe->except_mask.s_addr ||
2505 (((struct sockaddr_in *)&s->cli_addr)->sin_addr.s_addr & s->fe->except_mask.s_addr)
2506 != s->fe->except_net.s_addr) &&
2507 (!s->be->except_mask.s_addr ||
2508 (((struct sockaddr_in *)&s->cli_addr)->sin_addr.s_addr & s->be->except_mask.s_addr)
2509 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2510 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2511 unsigned char *pn;
2512 pn = (unsigned char *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2513
2514 /* Note: we rely on the backend to get the header name to be used for
2515 * x-forwarded-for, because the header is really meant for the backends.
2516 * However, if the backend did not specify any option, we have to rely
2517 * on the frontend's header name.
2518 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2519 if (s->be->fwdfor_hdr_len) {
2520 len = s->be->fwdfor_hdr_len;
2521 memcpy(trash, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2522 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2523 len = s->fe->fwdfor_hdr_len;
2524 memcpy(trash, s->fe->fwdfor_hdr_name, len);
2525 }
2526 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]2527
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2528 if (unlikely(http_header_add_tail2(req, &txn->req,
2529 &txn->hdr_idx, trash, len)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2530 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2531 }
2532 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2533 else if (s->cli_addr.ss_family == AF_INET6) {
2534 /* FIXME: for the sake of completeness, we should also support
2535 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2536 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2537 int len;
2538 char pn[INET6_ADDRSTRLEN];
2539 inet_ntop(AF_INET6,
2540 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
2541 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2542
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2543 /* Note: we rely on the backend to get the header name to be used for
2544 * x-forwarded-for, because the header is really meant for the backends.
2545 * However, if the backend did not specify any option, we have to rely
2546 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2547 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2548 if (s->be->fwdfor_hdr_len) {
2549 len = s->be->fwdfor_hdr_len;
2550 memcpy(trash, s->be->fwdfor_hdr_name, len);
2551 } else {
2552 len = s->fe->fwdfor_hdr_len;
2553 memcpy(trash, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2554 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2555 len += sprintf(trash + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2556
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2557 if (unlikely(http_header_add_tail2(req, &txn->req,
2558 &txn->hdr_idx, trash, len)) < 0)
2559 goto return_bad_req;
2560 }
2561 }
2562
2563 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]2564 * 10: add X-Original-To if either the frontend or the backend
2565 * asks for it.
2566 */
2567 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
2568
2569 /* FIXME: don't know if IPv6 can handle that case too. */
2570 if (s->cli_addr.ss_family == AF_INET) {
2571 /* Add an X-Original-To header unless the destination IP is
2572 * in the 'except' network range.
2573 */
2574 if (!(s->flags & SN_FRT_ADDR_SET))
2575 get_frt_addr(s);
2576
2577 if ((!s->fe->except_mask_to.s_addr ||
2578 (((struct sockaddr_in *)&s->frt_addr)->sin_addr.s_addr & s->fe->except_mask_to.s_addr)
2579 != s->fe->except_to.s_addr) &&
2580 (!s->be->except_mask_to.s_addr ||
2581 (((struct sockaddr_in *)&s->frt_addr)->sin_addr.s_addr & s->be->except_mask_to.s_addr)
2582 != s->be->except_to.s_addr)) {
2583 int len;
2584 unsigned char *pn;
2585 pn = (unsigned char *)&((struct sockaddr_in *)&s->frt_addr)->sin_addr;
2586
2587 /* Note: we rely on the backend to get the header name to be used for
2588 * x-original-to, because the header is really meant for the backends.
2589 * However, if the backend did not specify any option, we have to rely
2590 * on the frontend's header name.
2591 */
2592 if (s->be->orgto_hdr_len) {
2593 len = s->be->orgto_hdr_len;
2594 memcpy(trash, s->be->orgto_hdr_name, len);
2595 } else {
2596 len = s->fe->orgto_hdr_len;
2597 memcpy(trash, s->fe->orgto_hdr_name, len);
2598 }
2599 len += sprintf(trash + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
2600
2601 if (unlikely(http_header_add_tail2(req, &txn->req,
2602 &txn->hdr_idx, trash, len)) < 0)
2603 goto return_bad_req;
2604 }
2605 }
2606 }
2607
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]2608 /* 11: add "Connection: close" if needed and not yet set. */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2609 if (!(s->flags & SN_CONN_CLOSED) &&
2610 ((s->fe->options | s->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) {
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]2611 if (unlikely(http_header_add_tail2(req, &txn->req, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2612 "Connection: close", 17)) < 0)
2613 goto return_bad_req;
2614 s->flags |= SN_CONN_CLOSED;
2615 }
2616 /* Before we switch to data, was assignment set in manage_client_side_cookie?
2617 * If not assigned, perhaps we are balancing on url_param, but this is a
2618 * POST; and the parameters are in the body, maybe scan there to find our server.
2619 * (unless headers overflowed the buffer?)
2620 */
2621 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
2622 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
2623 s->be->url_param_post_limit != 0 && !(req->flags & BF_FULL) &&
2624 memchr(msg->sol + msg->sl.rq.u, '?', msg->sl.rq.u_l) == NULL) {
2625 /* are there enough bytes here? total == l || r || rlim ?
2626 * len is unsigned, but eoh is int,
2627 * how many bytes of body have we received?
2628 * eoh is the first empty line of the header
2629 */
2630 /* already established CRLF or LF at eoh, move to start of message, find message length in buffer */
2631 unsigned long len = req->l - (msg->sol[msg->eoh] == '\r' ? msg->eoh + 2 : msg->eoh + 1);
2632
2633 /* If we have HTTP/1.1 and Expect: 100-continue, then abort.
2634 * We can't assume responsibility for the server's decision,
2635 * on this URI and header set. See rfc2616: 14.20, 8.2.3,
2636 * We also can't change our mind later, about which server to choose, so round robin.
2637 */
2638 if ((likely(msg->sl.rq.v_l == 8) && req->data[msg->som + msg->sl.rq.v + 7] == '1')) {
2639 struct hdr_ctx ctx;
2640 ctx.idx = 0;
2641 /* Expect is allowed in 1.1, look for it */
2642 http_find_header2("Expect", 6, msg->sol, &txn->hdr_idx, &ctx);
2643 if (ctx.idx != 0 &&
2644 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0))
2645 /* We can't reliablly stall and wait for data, because of
2646 * .NET clients that don't conform to rfc2616; so, no need for
2647 * the next block to check length expectations.
2648 * We could send 100 status back to the client, but then we need to
2649 * re-write headers, and send the message. And this isn't the right
2650 * place for that action.
2651 * TODO: support Expect elsewhere and delete this block.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2652 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2653 goto end_check_maybe_wait_for_body;
2654 }
2655
Willy Tarreau03a56332009-10-18 21:28:29 +0200[diff] [blame]2656 if (likely(len <= s->be->url_param_post_limit)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2657 /* limit implies we are supposed to need this many bytes
Willy Tarreau03a56332009-10-18 21:28:29 +0200[diff] [blame]2658 * to find the parameter. Let's see how many bytes we can
2659 * wait for.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2660 */
Willy Tarreau03a56332009-10-18 21:28:29 +0200[diff] [blame]2661 if (txn->flags & TX_REQ_TE_CHNK) {
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2662 buffer_dont_connect(req);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2663 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau03a56332009-10-18 21:28:29 +0200[diff] [blame]2664 } else {
2665 long long hint = txn->req.hdr_content_len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2666 /* but limited to what we care about, maybe we don't expect any entity data (hint == 0) */
2667 if (s->be->url_param_post_limit < hint)
2668 hint = s->be->url_param_post_limit;
Willy Tarreau03a56332009-10-18 21:28:29 +0200[diff] [blame]2669
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2670 /* now do we really need to buffer more data? */
2671 if (len < hint) {
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2672 buffer_dont_connect(req);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2673 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2674 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2675 /* else... There are no body bytes to wait for */
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2676 }
2677 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2678 }
2679 end_check_maybe_wait_for_body:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2680
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2681 /*************************************************************
2682 * OK, that's finished for the headers. We have done what we *
2683 * could. Let's switch to the DATA state. *
2684 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2685
Willy Tarreaua07a34e2009-08-16 23:27:46 +0200[diff] [blame]2686 buffer_set_rlim(req, req->size); /* no more rewrite needed */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2687 s->logs.tv_request = now;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2688
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2689 /* OK let's go on with the BODY now */
2690 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2691
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2692 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2693 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]2694 /* we detected a parsing error. We want to archive this request
2695 * in the dedicated proxy area for later troubleshooting.
2696 */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2697 http_capture_bad_message(&s->fe->invalid_req, s, req, msg, s->fe);
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]2698 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2699
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2700 txn->req.msg_state = HTTP_MSG_ERROR;
2701 txn->status = 400;
2702 req->analysers = 0;
2703 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2704
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2705 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2706 if (s->listener->counters)
2707 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2708
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2709 if (!(s->flags & SN_ERR_MASK))
2710 s->flags |= SN_ERR_PRXCOND;
2711 if (!(s->flags & SN_FINST_MASK))
2712 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2713 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2714}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2715
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2716/* This function is an analyser which processes the HTTP tarpit. It always
2717 * returns zero, at the beginning because it prevents any other processing
2718 * from occurring, and at the end because it terminates the request.
2719 */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2720int http_process_tarpit(struct session *s, struct buffer *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2721{
2722 struct http_txn *txn = &s->txn;
2723
2724 /* This connection is being tarpitted. The CLIENT side has
2725 * already set the connect expiration date to the right
2726 * timeout. We just have to check that the client is still
2727 * there and that the timeout has not expired.
2728 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2729 buffer_dont_connect(req);
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2730 if ((req->flags & (BF_SHUTR|BF_READ_ERROR)) == 0 &&
2731 !tick_is_expired(req->analyse_exp, now_ms))
2732 return 0;
2733
2734 /* We will set the queue timer to the time spent, just for
2735 * logging purposes. We fake a 500 server error, so that the
2736 * attacker will not suspect his connection has been tarpitted.
2737 * It will not cause trouble to the logs because we can exclude
2738 * the tarpitted connections by filtering on the 'PT' status flags.
2739 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2740 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
2741
2742 txn->status = 500;
2743 if (req->flags != BF_READ_ERROR)
2744 stream_int_retnclose(req->prod, error_message(s, HTTP_ERR_500));
2745
2746 req->analysers = 0;
2747 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2748
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]2749 s->fe->counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2750 if (s->listener->counters)
2751 s->listener->counters->failed_req++;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2752
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]2753 if (!(s->flags & SN_ERR_MASK))
2754 s->flags |= SN_ERR_PRXCOND;
2755 if (!(s->flags & SN_FINST_MASK))
2756 s->flags |= SN_FINST_T;
2757 return 0;
2758}
2759
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2760/* This function is an analyser which processes the HTTP request body. It looks
2761 * for parameters to be used for the load balancing algorithm (url_param). It
2762 * must only be called after the standard HTTP request processing has occurred,
2763 * because it expects the request to be parsed. It returns zero if it needs to
2764 * read more data, or 1 once it has completed its analysis.
2765 */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2766int http_process_request_body(struct session *s, struct buffer *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2767{
2768 struct http_msg *msg = &s->txn.req;
2769 unsigned long body = msg->sol[msg->eoh] == '\r' ? msg->eoh + 2 : msg->eoh + 1;
2770 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2771
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2772 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
2773 /* we need more data */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2774 buffer_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]2775 return 0;
2776 }
2777
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2778 /* We have to parse the HTTP request body to find any required data.
2779 * "balance url_param check_post" should have been the only way to get
2780 * into this. We were brought here after HTTP header analysis, so all
2781 * related structures are ready.
2782 */
2783
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2784 /* now if we have a length, we'll take the hint */
Willy Tarreau2225dd42009-10-18 21:36:47 +0200[diff] [blame]2785 if (s->txn.flags & TX_REQ_TE_CHNK) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2786 unsigned int chunk = 0;
2787 while (body < req->l && !HTTP_IS_CRLF(msg->sol[body])) {
2788 char c = msg->sol[body];
2789 if (ishex(c)) {
2790 unsigned int hex = toupper(c) - '0';
2791 if (hex > 9)
2792 hex -= 'A' - '9' - 1;
2793 chunk = (chunk << 4) | hex;
2794 } else
2795 break;
2796 body++;
2797 }
2798 if (body + 2 >= req->l) /* we want CRLF too */
2799 goto http_body_end; /* end of buffer? data missing! */
2800
2801 if (memcmp(msg->sol+body, "\r\n", 2) != 0)
2802 goto http_body_end; /* chunked encoding len ends with CRLF, and we don't have it yet */
2803
2804 body += 2; // skip CRLF
2805
2806 /* if we support more then one chunk here, we have to do it again when assigning server
2807 * 1. how much entity data do we have? new var
2808 * 2. should save entity_start, entity_cursor, elen & rlen in req; so we don't repeat scanning here
2809 * 3. test if elen > limit, or set new limit to elen if 0 (end of entity found)
2810 */
2811
2812 if (chunk < limit)
2813 limit = chunk; /* only reading one chunk */
2814 } else {
2815 if (msg->hdr_content_len < limit)
2816 limit = msg->hdr_content_len;
2817 }
2818
2819 http_body_end:
2820 /* we leave once we know we have nothing left to do. This means that we have
2821 * enough bytes, or that we know we'll not get any more (buffer full, read
2822 * buffer closed).
2823 */
2824 if (req->l - body >= limit || /* enough bytes! */
2825 req->flags & (BF_FULL | BF_READ_ERROR | BF_SHUTR | BF_READ_TIMEOUT) ||
2826 tick_is_expired(req->analyse_exp, now_ms)) {
2827 /* The situation will not evolve, so let's give up on the analysis. */
2828 s->logs.tv_request = now; /* update the request timer to reflect full request */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2829 req->analysers &= ~an_bit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2830 req->analyse_exp = TICK_ETERNITY;
2831 return 1;
2832 }
2833 else {
2834 /* Not enough data. We'll re-use the http-request
2835 * timeout here. Ideally, we should set the timeout
2836 * relative to the accept() date. We just set the
2837 * request timeout once at the beginning of the
2838 * request.
2839 */
Willy Tarreau520d95e2009-09-19 21:04:57 +0200[diff] [blame]2840 buffer_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2841 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]2842 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]2843 return 0;
2844 }
2845}
2846
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2847/* This stream analyser waits for a complete HTTP response. It returns 1 if the
2848 * processing can continue on next analysers, or zero if it either needs more
2849 * data or wants to immediately abort the response (eg: timeout, error, ...). It
2850 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
2851 * when it has nothing left to do, and may remove any analyser when it wants to
2852 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2853 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2854int http_wait_for_response(struct session *s, struct buffer *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2855{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2856 struct http_txn *txn = &s->txn;
2857 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame^]2858 struct hdr_ctx ctx;
2859 int conn_ka, conn_cl;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2860 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]2861 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2862
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2863 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]2864 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2865 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2866 rep,
2867 rep->rex, rep->wex,
2868 rep->flags,
2869 rep->l,
2870 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]2871
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2872 /*
2873 * Now parse the partial (or complete) lines.
2874 * We will check the response syntax, and also join multi-line
2875 * headers. An index of all the lines will be elaborated while
2876 * parsing.
2877 *
2878 * For the parsing, we use a 28 states FSM.
2879 *
2880 * Here is the information we currently have :
2881 * rep->data + rep->som = beginning of response
2882 * rep->data + rep->eoh = end of processed headers / start of current one
2883 * rep->data + rep->eol = end of current header or line (LF or CRLF)
2884 * rep->lr = first non-visited byte
2885 * rep->r = end of data
2886 */
2887
2888 if (likely(rep->lr < rep->r))
2889 http_msg_analyzer(rep, msg, &txn->hdr_idx);
Willy Tarreau7f875f62008-08-11 17:35:01 +0200[diff] [blame]2890
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2891 /* 1: we might have to print this header in debug mode */
2892 if (unlikely((global.mode & MODE_DEBUG) &&
2893 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
2894 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
2895 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2896
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2897 sol = rep->data + msg->som;
2898 eol = sol + msg->sl.rq.l;
2899 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2900
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2901 sol += hdr_idx_first_pos(&txn->hdr_idx);
2902 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2903
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2904 while (cur_idx) {
2905 eol = sol + txn->hdr_idx.v[cur_idx].len;
2906 debug_hdr("srvhdr", s, sol, eol);
2907 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2908 cur_idx = txn->hdr_idx.v[cur_idx].next;
2909 }
2910 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2911
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2912 /*
2913 * Now we quickly check if we have found a full valid response.
2914 * If not so, we check the FD and buffer states before leaving.
2915 * A full response is indicated by the fact that we have seen
2916 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
2917 * responses are checked first.
2918 *
2919 * Depending on whether the client is still there or not, we
2920 * may send an error response back or not. Note that normally
2921 * we should only check for HTTP status there, and check I/O
2922 * errors somewhere else.
2923 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2924
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2925 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
2926 /* Invalid response */
2927 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
2928 /* we detected a parsing error. We want to archive this response
2929 * in the dedicated proxy area for later troubleshooting.
2930 */
2931 hdr_response_bad:
2932 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
2933 http_capture_bad_message(&s->be->invalid_rep, s, rep, msg, s->fe);
2934
2935 s->be->counters.failed_resp++;
2936 if (s->srv)
2937 s->srv->counters.failed_resp++;
2938
2939 rep->analysers = 0;
2940 txn->status = 502;
2941 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_502));
2942
2943 if (!(s->flags & SN_ERR_MASK))
2944 s->flags |= SN_ERR_PRXCOND;
2945 if (!(s->flags & SN_FINST_MASK))
2946 s->flags |= SN_FINST_H;
2947
2948 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2949 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2950
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2951 /* too large response does not fit in buffer. */
2952 else if (rep->flags & BF_FULL) {
2953 goto hdr_response_bad;
2954 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2955
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2956 /* read error */
2957 else if (rep->flags & BF_READ_ERROR) {
2958 if (msg->err_pos >= 0)
2959 http_capture_bad_message(&s->be->invalid_rep, s, rep, msg, s->fe);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2960
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2961 s->be->counters.failed_resp++;
2962 if (s->srv)
2963 s->srv->counters.failed_resp++;
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]2964
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2965 rep->analysers = 0;
2966 txn->status = 502;
2967 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]2968
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2969 if (!(s->flags & SN_ERR_MASK))
2970 s->flags |= SN_ERR_SRVCL;
2971 if (!(s->flags & SN_FINST_MASK))
2972 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2973 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2974 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2975
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2976 /* read timeout : return a 504 to the client. */
2977 else if (rep->flags & BF_READ_TIMEOUT) {
2978 if (msg->err_pos >= 0)
2979 http_capture_bad_message(&s->be->invalid_rep, s, rep, msg, s->fe);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2980
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2981 s->be->counters.failed_resp++;
2982 if (s->srv)
2983 s->srv->counters.failed_resp++;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2984
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2985 rep->analysers = 0;
2986 txn->status = 504;
2987 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2988
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2989 if (!(s->flags & SN_ERR_MASK))
2990 s->flags |= SN_ERR_SRVTO;
2991 if (!(s->flags & SN_FINST_MASK))
2992 s->flags |= SN_FINST_H;
2993 return 0;
2994 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]2995
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]2996 /* close from server */
2997 else if (rep->flags & BF_SHUTR) {
2998 if (msg->err_pos >= 0)
2999 http_capture_bad_message(&s->be->invalid_rep, s, rep, msg, s->fe);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3000
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3001 s->be->counters.failed_resp++;
3002 if (s->srv)
3003 s->srv->counters.failed_resp++;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3004
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3005 rep->analysers = 0;
3006 txn->status = 502;
3007 stream_int_retnclose(rep->cons, error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3008
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3009 if (!(s->flags & SN_ERR_MASK))
3010 s->flags |= SN_ERR_SRVCL;
3011 if (!(s->flags & SN_FINST_MASK))
3012 s->flags |= SN_FINST_H;
3013 return 0;
3014 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]3015
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3016 /* write error to client (we don't send any message then) */
3017 else if (rep->flags & BF_WRITE_ERROR) {
3018 if (msg->err_pos >= 0)
3019 http_capture_bad_message(&s->be->invalid_rep, s, rep, msg, s->fe);
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]3020
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3021 s->be->counters.failed_resp++;
3022 rep->analysers = 0;
3023
3024 if (!(s->flags & SN_ERR_MASK))
3025 s->flags |= SN_ERR_CLICL;
3026 if (!(s->flags & SN_FINST_MASK))
3027 s->flags |= SN_FINST_H;
3028
3029 /* process_session() will take care of the error */
3030 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3031 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3032
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3033 buffer_dont_close(rep);
3034 return 0;
3035 }
3036
3037 /* More interesting part now : we know that we have a complete
3038 * response which at least looks like HTTP. We have an indicator
3039 * of each header's length, so we can parse them quickly.
3040 */
3041
3042 if (unlikely(msg->err_pos >= 0))
3043 http_capture_bad_message(&s->be->invalid_rep, s, rep, msg, s->fe);
3044
3045 /* ensure we keep this pointer to the beginning of the message */
3046 msg->sol = rep->data + msg->som;
3047
3048 /*
3049 * 1: get the status code
3050 */
3051 n = rep->data[msg->sl.st.c] - '0';
3052 if (n < 1 || n > 5)
3053 n = 0;
3054 s->srv->counters.p.http.rsp[n]++;
3055 s->be->counters.p.http.rsp[n]++;
3056
3057 txn->status = strl2ui(rep->data + msg->sl.st.c, msg->sl.st.c_l);
3058
3059 /*
3060 * 2: check for cacheability.
3061 */
3062
3063 switch (txn->status) {
3064 case 200:
3065 case 203:
3066 case 206:
3067 case 300:
3068 case 301:
3069 case 410:
3070 /* RFC2616 @13.4:
3071 * "A response received with a status code of
3072 * 200, 203, 206, 300, 301 or 410 MAY be stored
3073 * by a cache (...) unless a cache-control
3074 * directive prohibits caching."
3075 *
3076 * RFC2616 @9.5: POST method :
3077 * "Responses to this method are not cacheable,
3078 * unless the response includes appropriate
3079 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3080 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3081 if (likely(txn->meth != HTTP_METH_POST) &&
3082 (s->be->options & (PR_O_CHK_CACHE|PR_O_COOK_NOC)))
3083 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
3084 break;
3085 default:
3086 break;
3087 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3088
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3089 /*
3090 * 3: we may need to capture headers
3091 */
3092 s->logs.logwait &= ~LW_RESP;
3093 if (unlikely((s->logs.logwait & LW_RSPHDR) && s->fe->rsp_cap))
3094 capture_headers(rep->data + msg->som, &txn->hdr_idx,
3095 txn->rsp.cap, s->fe->rsp_cap);
3096
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame^]3097 /* 4: determine if we have a transfer-encoding or content-length.
3098 * RFC2616 #4.4 states that :
3099 * - Any response which "MUST NOT" include a message-body (such as the
3100 * 1xx, 204 and 304 responses and any response to a HEAD request) is
3101 * always terminated by the first empty line after the header fields,
3102 * regardless of the entity-header fields present in the message.
3103 *
3104 * - If a Transfer-Encoding header field is present and has any value
3105 * other than "identity", then the transfer-length is defined by use
3106 * of the "chunked" transfer-coding ;
3107 *
3108 * - If a Content-Length header field is present, its decimal value in
3109 * OCTETs represents both the entity-length and the transfer-length.
3110 * If a message is received with both a Transfer-Encoding header
3111 * field and a Content-Length header field, the latter MUST be ignored.
3112 */
3113
3114 /* Skip parsing if no content length is possible. The response flags
3115 * remain 0 as well as the hdr_content_len, which may or may not mirror
3116 * the real header value.
3117 * FIXME: should we parse anyway and return an error on chunked encoding ?
3118 */
3119 if (txn->meth == HTTP_METH_HEAD ||
3120 (txn->status >= 100 && txn->status < 200) ||
3121 txn->status == 204 || txn->status == 304)
3122 goto skip_content_length;
3123
3124 /* FIXME: chunked encoding is HTTP/1.1 only */
3125 ctx.idx = 0;
3126 while (http_find_header2("Transfer-Encoding", 17, msg->sol, &txn->hdr_idx, &ctx)) {
3127 if (ctx.vlen == 8 && strncasecmp(ctx.line + ctx.val, "identity", 8) == 0)
3128 continue;
3129 txn->flags |= TX_RES_TE_CHNK;
3130 break;
3131 }
3132
3133 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
3134 ctx.idx = 0;
3135 while (!(txn->flags & TX_RES_TE_CHNK) &&
3136 http_find_header2("Content-Length", 14, msg->sol, &txn->hdr_idx, &ctx)) {
3137 signed long long cl;
3138
3139 if (!ctx.vlen)
3140 goto hdr_response_bad;
3141
3142 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl))
3143 goto hdr_response_bad; /* parse failure */
3144
3145 if (cl < 0)
3146 goto hdr_response_bad;
3147
3148 if ((txn->flags & TX_RES_CNT_LEN) && (msg->hdr_content_len != cl))
3149 goto hdr_response_bad; /* already specified, was different */
3150
3151 txn->flags |= TX_RES_CNT_LEN;
3152 msg->hdr_content_len = cl;
3153 }
3154
3155skip_content_length:
3156 /* Determine if the server wishes keep-alive or close.
3157 * RFC2616 #8.1.2 and #14.10 state that HTTP/1.1 and above connections
3158 * are persistent unless "Connection: close" is explicitly specified.
3159 * RFC2616 #19.6.2 refers to RFC2068 for HTTP/1.0 persistent connections.
3160 * RFC2068 #19.7.1 states that HTTP/1.0 clients are not persistent unless
3161 * they explicitly specify "Connection: keep-alive", regardless of any
3162 * optional "keep-alive" header.
3163 */
3164
3165 /* FIXME: should we also remove any header specified in "connection" ? */
3166 conn_ka = conn_cl = 0;
3167 ctx.idx = 0;
3168 while (http_find_header2("Connection", 10, msg->sol, &txn->hdr_idx, &ctx)) {
3169 if (ctx.vlen == 5 && strncasecmp(ctx.line + ctx.val, "close", 5) == 0)
3170 conn_cl = 1;
3171 else if (ctx.vlen == 10 && strncasecmp(ctx.line + ctx.val, "keep-alive", 10) == 0)
3172 conn_ka = 1;
3173 }
3174
3175 if ((msg->sl.st.v_l == 8) &&
3176 (rep->data[msg->som + 5] == '1') &&
3177 (rep->data[msg->som + 7] == '0')) {
3178 /* HTTP/1.0 */
3179 if (!conn_ka)
3180 txn->flags &= ~TX_SRV_CONN_KA;
3181 } else {
3182 /* HTTP/1.1 */
3183 if (conn_cl)
3184 txn->flags &= ~TX_SRV_CONN_KA;;
3185 }
3186
3187 /* we can mark the connection as non-persistent if needed */
3188 s->flags &= ~SN_CONN_CLOSED; /* prepare for inspection */
3189 if (!(txn->flags & TX_SRV_CONN_KA))
3190 s->flags |= SN_CONN_CLOSED;
3191
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3192 /* end of job, return OK */
3193 rep->analysers &= ~an_bit;
3194 rep->analyse_exp = TICK_ETERNITY;
3195 return 1;
3196}
3197
3198/* This function performs all the processing enabled for the current response.
3199 * It normally returns zero, but may return 1 if it absolutely needs to be
3200 * called again after other functions. It relies on buffers flags, and updates
3201 * t->rep->analysers. It might make sense to explode it into several other
3202 * functions. It works like process_request (see indications above).
3203 */
3204int http_process_res_common(struct session *t, struct buffer *rep, int an_bit, struct proxy *px)
3205{
3206 struct http_txn *txn = &t->txn;
3207 struct buffer *req = t->req;
3208 struct http_msg *msg = &txn->rsp;
3209 struct proxy *cur_proxy;
3210 int cur_idx;
3211
3212 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bl=%d analysers=%02x\n",
3213 now_ms, __FUNCTION__,
3214 t,
3215 rep,
3216 rep->rex, rep->wex,
3217 rep->flags,
3218 rep->l,
3219 rep->analysers);
3220
3221 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) /* we need more data */
3222 return 0;
3223
3224 rep->analysers &= ~an_bit;
3225 rep->analyse_exp = TICK_ETERNITY;
3226
3227 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3228 /*
3229 * 3: we will have to evaluate the filters.
3230 * As opposed to version 1.2, now they will be evaluated in the
3231 * filters order and not in the header order. This means that
3232 * each filter has to be validated among all headers.
3233 *
3234 * Filters are tried with ->be first, then with ->fe if it is
3235 * different from ->be.
3236 */
3237
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3238 cur_proxy = t->be;
3239 while (1) {
3240 struct proxy *rule_set = cur_proxy;
3241
3242 /* try headers filters */
3243 if (rule_set->rsp_exp != NULL) {
3244 if (apply_filters_to_response(t, rep, rule_set->rsp_exp) < 0) {
3245 return_bad_resp:
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]3246 if (t->srv)
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3247 t->srv->counters.failed_resp++;
3248 cur_proxy->counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3249 return_srv_prx_502:
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3250 buffer_shutr_now(rep);
3251 buffer_shutw_now(req);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]3252 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3253 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]3254 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3255 if (!(t->flags & SN_ERR_MASK))
3256 t->flags |= SN_ERR_PRXCOND;
3257 if (!(t->flags & SN_FINST_MASK))
3258 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3259 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3260 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3261 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]3262
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3263 /* has the response been denied ? */
3264 if (txn->flags & TX_SVDENY) {
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]3265 if (t->srv)
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3266 t->srv->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3267
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3268 cur_proxy->counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3269 if (t->listener->counters)
3270 t->listener->counters->denied_resp++;
3271
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3272 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]3273 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3274
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3275 /* We might have to check for "Connection:" */
3276 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]3277 !(t->flags & SN_CONN_CLOSED) &&
3278 txn->status >= 200) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3279 char *cur_ptr, *cur_end, *cur_next;
3280 int cur_idx, old_idx, delta, val;
3281 struct hdr_idx_elem *cur_hdr;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3282
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3283 cur_next = rep->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
3284 old_idx = 0;
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]3285
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3286 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
3287 cur_hdr = &txn->hdr_idx.v[cur_idx];
3288 cur_ptr = cur_next;
3289 cur_end = cur_ptr + cur_hdr->len;
3290 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3291
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3292 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
3293 if (val) {
3294 /* 3 possibilities :
3295 * - we have already set Connection: close,
3296 * so we remove this line.
3297 * - we have not yet set Connection: close,
3298 * but this line indicates close. We leave
3299 * it untouched and set the flag.
3300 * - we have not yet set Connection: close,
3301 * and this line indicates non-close. We
3302 * replace it.
3303 */
3304 if (t->flags & SN_CONN_CLOSED) {
3305 delta = buffer_replace2(rep, cur_ptr, cur_next, NULL, 0);
3306 txn->rsp.eoh += delta;
3307 cur_next += delta;
3308 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3309 txn->hdr_idx.used--;
3310 cur_hdr->len = 0;
3311 } else {
3312 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
3313 delta = buffer_replace2(rep, cur_ptr + val, cur_end,
3314 "close", 5);
3315 cur_next += delta;
3316 cur_hdr->len += delta;
3317 txn->rsp.eoh += delta;
3318 }
3319 t->flags |= SN_CONN_CLOSED;
3320 }
3321 }
3322 old_idx = cur_idx;
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]3323 }
3324 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3325
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3326 /* add response headers from the rule sets in the same order */
3327 for (cur_idx = 0; cur_idx < rule_set->nb_rspadd; cur_idx++) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3328 if (txn->status < 200)
3329 break;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3330 if (unlikely(http_header_add_tail(rep, &txn->rsp, &txn->hdr_idx,
3331 rule_set->rsp_add[cur_idx])) < 0)
3332 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]3333 }
3334
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3335 /* check whether we're already working on the frontend */
3336 if (cur_proxy == t->fe)
3337 break;
3338 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3339 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3340
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3341 /*
3342 * 4: check for server cookie.
3343 */
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3344 if ((t->be->cookie_name || t->be->appsession_name || t->fe->capture_name
3345 || (t->be->options & PR_O_CHK_CACHE)) && txn->status >= 200)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3346 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3347
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3348
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3349 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3350 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3351 */
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3352 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]3353 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3354
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3355 /*
3356 * 6: add server cookie in the response if needed
3357 */
3358 if ((t->srv) && !(t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_INS) &&
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3359 (!(t->be->options & PR_O_COOK_POST) || (txn->meth == HTTP_METH_POST)) &&
3360 txn->status >= 200) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3361 int len;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3362
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3363 /* the server is known, it's not the one the client requested, we have to
3364 * insert a set-cookie here, except if we want to insert only on POST
3365 * requests and this one isn't. Note that servers which don't have cookies
3366 * (eg: some backup servers) will return a full cookie removal request.
3367 */
3368 len = sprintf(trash, "Set-Cookie: %s=%s; path=/",
3369 t->be->cookie_name,
3370 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]3371
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3372 if (t->be->cookie_domain)
3373 len += sprintf(trash+len, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3374
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3375 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3376 trash, len)) < 0)
3377 goto return_bad_resp;
3378 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3379
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3380 /* Here, we will tell an eventual cache on the client side that we don't
3381 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
3382 * Some caches understand the correct form: 'no-cache="set-cookie"', but
3383 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
3384 */
3385 if ((t->be->options & PR_O_COOK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3386
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3387 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
3388
3389 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3390 "Cache-control: private", 22)) < 0)
3391 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3392 }
3393 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3394
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3395
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3396 /*
3397 * 7: check if result will be cacheable with a cookie.
3398 * We'll block the response if security checks have caught
3399 * nasty things such as a cacheable cookie.
3400 */
3401 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) ==
3402 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) &&
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3403 (t->be->options & PR_O_CHK_CACHE) &&
3404 txn->status >= 200) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3405
3406 /* we're in presence of a cacheable response containing
3407 * a set-cookie header. We'll block it as requested by
3408 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3409 */
Willy Tarreau8365f932009-03-15 23:11:49 +0100[diff] [blame]3410 if (t->srv)
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3411 t->srv->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3412
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3413 cur_proxy->counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3414 if (t->listener->counters)
3415 t->listener->counters->denied_resp++;
3416
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3417 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
3418 t->be->id, t->srv?t->srv->id:"<dispatch>");
3419 send_log(t->be, LOG_ALERT,
3420 "Blocking cacheable cookie in response from instance %s, server %s.\n",
3421 t->be->id, t->srv?t->srv->id:"<dispatch>");
3422 goto return_srv_prx_502;
3423 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3424
3425 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3426 * 8: add "Connection: close" if needed and not yet set.
3427 * 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]3428 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3429 if (!(t->flags & SN_CONN_CLOSED) &&
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3430 ((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
3431 txn->status >= 200) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3432 if ((unlikely(msg->sl.st.v_l != 8) ||
3433 unlikely(req->data[msg->som + 7] != '0')) &&
3434 unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3435 "Connection: close", 17)) < 0)
3436 goto return_bad_resp;
3437 t->flags |= SN_CONN_CLOSED;
3438 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3439
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3440 /*
3441 * 9: we may be facing a 1xx response (100 continue, 101 switching protocols),
3442 * in which case this is not the right response, and we're waiting for the
3443 * next one. Let's allow this response to go to the client and wait for the
3444 * next one.
3445 */
3446 if (txn->status < 200) {
3447 hdr_idx_init(&txn->hdr_idx);
3448 buffer_forward(rep, rep->lr - (rep->data + msg->som));
3449 msg->msg_state = HTTP_MSG_RPBEFORE;
3450 txn->status = 0;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]3451 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
3452 return 1;
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]3453 }
3454
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3455 /*************************************************************
3456 * OK, that's finished for the headers. We have done what we *
3457 * could. Let's switch to the DATA state. *
3458 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3459
Willy Tarreaua07a34e2009-08-16 23:27:46 +0200[diff] [blame]3460 buffer_set_rlim(rep, rep->size); /* no more rewrite needed */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3461 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3462
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3463 /* if the user wants to log as soon as possible, without counting
3464 * bytes from the server, then this is the right moment. We have
3465 * to temporarily assign bytes_out to log what we currently have.
3466 */
3467 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
3468 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
3469 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]3470 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3471 t->logs.bytes_out = 0;
3472 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3473
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3474 /* Note: we must not try to cheat by jumping directly to DATA,
3475 * otherwise we would not let the client side wake up.
3476 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3477
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3478 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3479 }
3480 return 0;
3481}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3482
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3483/* Iterate the same filter through all request headers.
3484 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3485 * Since it can manage the switch to another backend, it updates the per-proxy
3486 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3487 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3488int 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]3489{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3490 char term;
3491 char *cur_ptr, *cur_end, *cur_next;
3492 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3493 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3494 struct hdr_idx_elem *cur_hdr;
3495 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]3496
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3497 last_hdr = 0;
3498
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3499 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3500 old_idx = 0;
3501
3502 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3503 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3504 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3505 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3506 (exp->action == ACT_ALLOW ||
3507 exp->action == ACT_DENY ||
3508 exp->action == ACT_TARPIT))
3509 return 0;
3510
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3511 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3512 if (!cur_idx)
3513 break;
3514
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3515 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3516 cur_ptr = cur_next;
3517 cur_end = cur_ptr + cur_hdr->len;
3518 cur_next = cur_end + cur_hdr->cr + 1;
3519
3520 /* Now we have one header between cur_ptr and cur_end,
3521 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3522 */
3523
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3524 /* The annoying part is that pattern matching needs
3525 * that we modify the contents to null-terminate all
3526 * strings before testing them.
3527 */
3528
3529 term = *cur_end;
3530 *cur_end = '\0';
3531
3532 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3533 switch (exp->action) {
3534 case ACT_SETBE:
3535 /* It is not possible to jump a second time.
3536 * FIXME: should we return an HTTP/500 here so that
3537 * the admin knows there's a problem ?
3538 */
3539 if (t->be != t->fe)
3540 break;
3541
3542 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3543 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3544 last_hdr = 1;
3545 break;
3546
3547 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3548 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3549 last_hdr = 1;
3550 break;
3551
3552 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3553 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3554 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3555
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3556 t->be->counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3557 if (t->listener->counters)
3558 t->listener->counters->denied_resp++;
3559
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3560 break;
3561
3562 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3563 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3564 last_hdr = 1;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3565
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3566 t->be->counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3567 if (t->listener->counters)
3568 t->listener->counters->denied_resp++;
3569
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3570 break;
3571
3572 case ACT_REPLACE:
3573 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3574 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3575 /* FIXME: if the user adds a newline in the replacement, the
3576 * index will not be recalculated for now, and the new line
3577 * will not be counted as a new header.
3578 */
3579
3580 cur_end += delta;
3581 cur_next += delta;
3582 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3583 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3584 break;
3585
3586 case ACT_REMOVE:
3587 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
3588 cur_next += delta;
3589
3590 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3591 txn->req.eoh += delta;
3592 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3593 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3594 cur_hdr->len = 0;
3595 cur_end = NULL; /* null-term has been rewritten */
3596 break;
3597
3598 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3599 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3600 if (cur_end)
3601 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3602
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3603 /* keep the link from this header to next one in case of later
3604 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3605 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3606 old_idx = cur_idx;
3607 }
3608 return 0;
3609}
3610
3611
3612/* Apply the filter to the request line.
3613 * Returns 0 if nothing has been done, 1 if the filter has been applied,
3614 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3615 * Since it can manage the switch to another backend, it updates the per-proxy
3616 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3617 */
3618int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
3619{
3620 char term;
3621 char *cur_ptr, *cur_end;
3622 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3623 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3624 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3625
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3626
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3627 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3628 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3629 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3630 (exp->action == ACT_ALLOW ||
3631 exp->action == ACT_DENY ||
3632 exp->action == ACT_TARPIT))
3633 return 0;
3634 else if (exp->action == ACT_REMOVE)
3635 return 0;
3636
3637 done = 0;
3638
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3639 cur_ptr = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3640 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3641
3642 /* Now we have the request line between cur_ptr and cur_end */
3643
3644 /* The annoying part is that pattern matching needs
3645 * that we modify the contents to null-terminate all
3646 * strings before testing them.
3647 */
3648
3649 term = *cur_end;
3650 *cur_end = '\0';
3651
3652 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3653 switch (exp->action) {
3654 case ACT_SETBE:
3655 /* It is not possible to jump a second time.
3656 * FIXME: should we return an HTTP/500 here so that
3657 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3658 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3659 if (t->be != t->fe)
3660 break;
3661
3662 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3663 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3664 done = 1;
3665 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3666
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3667 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3668 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3669 done = 1;
3670 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3671
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3672 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3673 txn->flags |= TX_CLDENY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3674
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3675 t->be->counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3676 if (t->listener->counters)
3677 t->listener->counters->denied_resp++;
3678
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3679 done = 1;
3680 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3681
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3682 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3683 txn->flags |= TX_CLTARPIT;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3684
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200[diff] [blame]3685 t->be->counters.denied_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3686 if (t->listener->counters)
3687 t->listener->counters->denied_resp++;
3688
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3689 done = 1;
3690 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3691
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3692 case ACT_REPLACE:
3693 *cur_end = term; /* restore the string terminator */
3694 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3695 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3696 /* FIXME: if the user adds a newline in the replacement, the
3697 * index will not be recalculated for now, and the new line
3698 * will not be counted as a new header.
3699 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3700
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3701 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3702 cur_end += delta;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3703
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3704 txn->req.sol = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3705 cur_end = (char *)http_parse_reqline(&txn->req, req->data,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3706 HTTP_MSG_RQMETH,
3707 cur_ptr, cur_end + 1,
3708 NULL, NULL);
3709 if (unlikely(!cur_end))
3710 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3711
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3712 /* we have a full request and we know that we have either a CR
3713 * or an LF at <ptr>.
3714 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3715 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
3716 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]3717 /* there is no point trying this regex on headers */
3718 return 1;
3719 }
3720 }
3721 *cur_end = term; /* restore the string terminator */
3722 return done;
3723}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]3724
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3725
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3726
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3727/*
3728 * Apply all the req filters <exp> to all headers in buffer <req> of session <t>.
3729 * 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]3730 * unparsable request. Since it can manage the switch to another backend, it
3731 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3732 */
3733int apply_filters_to_request(struct session *t, struct buffer *req, struct hdr_exp *exp)
3734{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3735 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3736 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3737 while (exp && !(txn->flags & (TX_CLDENY|TX_CLTARPIT))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3738 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3739
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3740 /*
3741 * The interleaving of transformations and verdicts
3742 * makes it difficult to decide to continue or stop
3743 * the evaluation.
3744 */
3745
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3746 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3747 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
3748 exp->action == ACT_TARPIT || exp->action == ACT_PASS)) {
3749 exp = exp->next;
3750 continue;
3751 }
3752
3753 /* Apply the filter to the request line. */
3754 ret = apply_filter_to_req_line(t, req, exp);
3755 if (unlikely(ret < 0))
3756 return -1;
3757
3758 if (likely(ret == 0)) {
3759 /* The filter did not match the request, it can be
3760 * iterated through all headers.
3761 */
3762 apply_filter_to_req_headers(t, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3763 }
3764 exp = exp->next;
3765 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3766 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3767}
3768
3769
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3770
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3771/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]3772 * Try to retrieve the server associated to the appsession.
3773 * If the server is found, it's assigned to the session.
3774 */
3775void manage_client_side_appsession(struct session *t, const char *buf) {
3776 struct http_txn *txn = &t->txn;
3777 appsess *asession = NULL;
3778 char *sessid_temp = NULL;
3779
3780 if (t->be->options2 & PR_O2_AS_REQL) {
3781 /* request-learn option is enabled : store the sessid in the session for future use */
3782 if (t->sessid != NULL) {
3783 /* free previously allocated memory as we don't need the session id found in the URL anymore */
3784 pool_free2(apools.sessid, t->sessid);
3785 }
3786
3787 if ((t->sessid = pool_alloc2(apools.sessid)) == NULL) {
3788 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
3789 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
3790 return;
3791 }
3792
3793 memcpy(t->sessid, buf, t->be->appsession_len);
3794 t->sessid[t->be->appsession_len] = 0;
3795 }
3796
3797 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
3798 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
3799 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
3800 return;
3801 }
3802
3803 memcpy(sessid_temp, buf, t->be->appsession_len);
3804 sessid_temp[t->be->appsession_len] = 0;
3805
3806 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
3807 /* free previously allocated memory */
3808 pool_free2(apools.sessid, sessid_temp);
3809
3810 if (asession != NULL) {
3811 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
3812 if (!(t->be->options2 & PR_O2_AS_REQL))
3813 asession->request_count++;
3814
3815 if (asession->serverid != NULL) {
3816 struct server *srv = t->be->srv;
3817 while (srv) {
3818 if (strcmp(srv->id, asession->serverid) == 0) {
3819 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
3820 /* we found the server and it's usable */
3821 txn->flags &= ~TX_CK_MASK;
3822 txn->flags |= TX_CK_VALID;
3823 t->flags |= SN_DIRECT | SN_ASSIGNED;
3824 t->srv = srv;
3825 break;
3826 } else {
3827 txn->flags &= ~TX_CK_MASK;
3828 txn->flags |= TX_CK_DOWN;
3829 }
3830 }
3831 srv = srv->next;
3832 }
3833 }
3834 }
3835}
3836
3837/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3838 * Manage client-side cookie. It can impact performance by about 2% so it is
3839 * desirable to call it only when needed.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3840 */
3841void manage_client_side_cookies(struct session *t, struct buffer *req)
3842{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3843 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3844 char *p1, *p2, *p3, *p4;
3845 char *del_colon, *del_cookie, *colon;
3846 int app_cookies;
3847
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3848 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3849 int cur_idx, old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3850
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3851 /* Iterate through the headers.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3852 * we start with the start line.
3853 */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]3854 old_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3855 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3856
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3857 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3858 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3859 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3860
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3861 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3862 cur_ptr = cur_next;
3863 cur_end = cur_ptr + cur_hdr->len;
3864 cur_next = cur_end + cur_hdr->cr + 1;
3865
3866 /* We have one full header between cur_ptr and cur_end, and the
3867 * next header starts at cur_next. We're only interested in
3868 * "Cookie:" headers.
3869 */
3870
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3871 val = http_header_match2(cur_ptr, cur_end, "Cookie", 6);
3872 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3873 old_idx = cur_idx;
3874 continue;
3875 }
3876
3877 /* Now look for cookies. Conforming to RFC2109, we have to support
3878 * attributes whose name begin with a '$', and associate them with
3879 * the right cookie, if we want to delete this cookie.
3880 * So there are 3 cases for each cookie read :
3881 * 1) it's a special attribute, beginning with a '$' : ignore it.
3882 * 2) it's a server id cookie that we *MAY* want to delete : save
3883 * some pointers on it (last semi-colon, beginning of cookie...)
3884 * 3) it's an application cookie : we *MAY* have to delete a previous
3885 * "special" cookie.
3886 * At the end of loop, if a "special" cookie remains, we may have to
3887 * remove it. If no application cookie persists in the header, we
3888 * *MUST* delete it
3889 */
3890
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3891 colon = p1 = cur_ptr + val; /* first non-space char after 'Cookie:' */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3892
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3893 /* del_cookie == NULL => nothing to be deleted */
3894 del_colon = del_cookie = NULL;
3895 app_cookies = 0;
3896
3897 while (p1 < cur_end) {
3898 /* skip spaces and colons, but keep an eye on these ones */
3899 while (p1 < cur_end) {
3900 if (*p1 == ';' || *p1 == ',')
3901 colon = p1;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3902 else if (!isspace((unsigned char)*p1))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3903 break;
3904 p1++;
3905 }
3906
3907 if (p1 == cur_end)
3908 break;
3909
3910 /* p1 is at the beginning of the cookie name */
3911 p2 = p1;
3912 while (p2 < cur_end && *p2 != '=')
3913 p2++;
3914
3915 if (p2 == cur_end)
3916 break;
3917
3918 p3 = p2 + 1; /* skips the '=' sign */
3919 if (p3 == cur_end)
3920 break;
3921
3922 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3923 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';' && *p4 != ',')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3924 p4++;
3925
3926 /* here, we have the cookie name between p1 and p2,
3927 * and its value between p3 and p4.
3928 * we can process it :
3929 *
3930 * Cookie: NAME=VALUE;
3931 * | || || |
3932 * | || || +--> p4
3933 * | || |+-------> p3
3934 * | || +--------> p2
3935 * | |+------------> p1
3936 * | +-------------> colon
3937 * +--------------------> cur_ptr
3938 */
3939
3940 if (*p1 == '$') {
3941 /* skip this one */
3942 }
3943 else {
3944 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3945 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3946 txn->cli_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3947 (p4 - p1 >= t->fe->capture_namelen) &&
3948 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3949 int log_len = p4 - p1;
3950
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]3951 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3952 Alert("HTTP logging : out of memory.\n");
3953 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3954 if (log_len > t->fe->capture_len)
3955 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3956 memcpy(txn->cli_cookie, p1, log_len);
3957 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3958 }
3959 }
3960
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3961 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
3962 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3963 /* Cool... it's the right one */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3964 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3965 char *delim;
3966
3967 /* if we're in cookie prefix mode, we'll search the delimitor so that we
3968 * have the server ID betweek p3 and delim, and the original cookie between
3969 * delim+1 and p4. Otherwise, delim==p4 :
3970 *
3971 * Cookie: NAME=SRV~VALUE;
3972 * | || || | |
3973 * | || || | +--> p4
3974 * | || || +--------> delim
3975 * | || |+-----------> p3
3976 * | || +------------> p2
3977 * | |+----------------> p1
3978 * | +-----------------> colon
3979 * +------------------------> cur_ptr
3980 */
3981
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3982 if (t->be->options & PR_O_COOK_PFX) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3983 for (delim = p3; delim < p4; delim++)
3984 if (*delim == COOKIE_DELIM)
3985 break;
3986 }
3987 else
3988 delim = p4;
3989
3990
3991 /* Here, we'll look for the first running server which supports the cookie.
3992 * This allows to share a same cookie between several servers, for example
3993 * to dedicate backup servers to specific servers only.
3994 * However, to prevent clients from sticking to cookie-less backup server
3995 * when they have incidentely learned an empty cookie, we simply ignore
3996 * empty cookies and mark them as invalid.
3997 */
3998 if (delim == p3)
3999 srv = NULL;
4000
4001 while (srv) {
Willy Tarreau92f2ab12007-02-02 22:14:47 +0100[diff] [blame]4002 if (srv->cookie && (srv->cklen == delim - p3) &&
4003 !memcmp(p3, srv->cookie, delim - p3)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4004 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4005 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4006 txn->flags &= ~TX_CK_MASK;
4007 txn->flags |= TX_CK_VALID;
4008 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4009 t->srv = srv;
4010 break;
4011 } else {
4012 /* we found a server, but it's down */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4013 txn->flags &= ~TX_CK_MASK;
4014 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4015 }
4016 }
4017 srv = srv->next;
4018 }
4019
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4020 if (!srv && !(txn->flags & TX_CK_DOWN)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4021 /* no server matched this cookie */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4022 txn->flags &= ~TX_CK_MASK;
4023 txn->flags |= TX_CK_INVALID;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4024 }
4025
4026 /* depending on the cookie mode, we may have to either :
4027 * - delete the complete cookie if we're in insert+indirect mode, so that
4028 * the server never sees it ;
4029 * - remove the server id from the cookie value, and tag the cookie as an
4030 * application cookie so that it does not get accidentely removed later,
4031 * if we're in cookie prefix mode
4032 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4033 if ((t->be->options & PR_O_COOK_PFX) && (delim != p4)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4034 int delta; /* negative */
4035
4036 delta = buffer_replace2(req, p3, delim + 1, NULL, 0);
4037 p4 += delta;
4038 cur_end += delta;
4039 cur_next += delta;
4040 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4041 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4042
4043 del_cookie = del_colon = NULL;
4044 app_cookies++; /* protect the header from deletion */
4045 }
4046 else if (del_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4047 (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]4048 del_cookie = p1;
4049 del_colon = colon;
4050 }
4051 } else {
4052 /* now we know that we must keep this cookie since it's
4053 * not ours. But if we wanted to delete our cookie
4054 * earlier, we cannot remove the complete header, but we
4055 * can remove the previous block itself.
4056 */
4057 app_cookies++;
4058
4059 if (del_cookie != NULL) {
4060 int delta; /* negative */
4061
4062 delta = buffer_replace2(req, del_cookie, p1, NULL, 0);
4063 p4 += delta;
4064 cur_end += delta;
4065 cur_next += delta;
4066 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4067 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4068 del_cookie = del_colon = NULL;
4069 }
4070 }
4071
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4072 if ((t->be->appsession_name != NULL) &&
4073 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4074 /* first, let's see if the cookie is our appcookie*/
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4075
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4076 /* Cool... it's the right one */
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]4077 manage_client_side_appsession(t, p3);
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4078#if defined(DEBUG_HASH)
4079 Alert("manage_client_side_cookies\n");
4080 appsession_hash_dump(&(t->be->htbl_proxy));
4081#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4082 }/* end if ((t->proxy->appsession_name != NULL) ... */
4083 }
4084
4085 /* we'll have to look for another cookie ... */
4086 p1 = p4;
4087 } /* while (p1 < cur_end) */
4088
4089 /* There's no more cookie on this line.
4090 * We may have marked the last one(s) for deletion.
4091 * We must do this now in two ways :
4092 * - if there is no app cookie, we simply delete the header ;
4093 * - if there are app cookies, we must delete the end of the
4094 * string properly, including the colon/semi-colon before
4095 * the cookie name.
4096 */
4097 if (del_cookie != NULL) {
4098 int delta;
4099 if (app_cookies) {
4100 delta = buffer_replace2(req, del_colon, cur_end, NULL, 0);
4101 cur_end = del_colon;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4102 cur_hdr->len += delta;
4103 } else {
4104 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4105
4106 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4107 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4108 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4109 cur_hdr->len = 0;
4110 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]4111 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4112 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4113 }
4114
4115 /* keep the link from this header to next one */
4116 old_idx = cur_idx;
4117 } /* end of cookie processing on this header */
4118}
4119
4120
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4121/* Iterate the same filter through all response headers contained in <rtr>.
4122 * Returns 1 if this filter can be stopped upon return, otherwise 0.
4123 */
4124int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4125{
4126 char term;
4127 char *cur_ptr, *cur_end, *cur_next;
4128 int cur_idx, old_idx, last_hdr;
4129 struct http_txn *txn = &t->txn;
4130 struct hdr_idx_elem *cur_hdr;
4131 int len, delta;
4132
4133 last_hdr = 0;
4134
4135 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4136 old_idx = 0;
4137
4138 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4139 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4140 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4141 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4142 (exp->action == ACT_ALLOW ||
4143 exp->action == ACT_DENY))
4144 return 0;
4145
4146 cur_idx = txn->hdr_idx.v[old_idx].next;
4147 if (!cur_idx)
4148 break;
4149
4150 cur_hdr = &txn->hdr_idx.v[cur_idx];
4151 cur_ptr = cur_next;
4152 cur_end = cur_ptr + cur_hdr->len;
4153 cur_next = cur_end + cur_hdr->cr + 1;
4154
4155 /* Now we have one header between cur_ptr and cur_end,
4156 * and the next header starts at cur_next.
4157 */
4158
4159 /* The annoying part is that pattern matching needs
4160 * that we modify the contents to null-terminate all
4161 * strings before testing them.
4162 */
4163
4164 term = *cur_end;
4165 *cur_end = '\0';
4166
4167 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4168 switch (exp->action) {
4169 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4170 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4171 last_hdr = 1;
4172 break;
4173
4174 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4175 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4176 last_hdr = 1;
4177 break;
4178
4179 case ACT_REPLACE:
4180 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4181 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4182 /* FIXME: if the user adds a newline in the replacement, the
4183 * index will not be recalculated for now, and the new line
4184 * will not be counted as a new header.
4185 */
4186
4187 cur_end += delta;
4188 cur_next += delta;
4189 cur_hdr->len += delta;
4190 txn->rsp.eoh += delta;
4191 break;
4192
4193 case ACT_REMOVE:
4194 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4195 cur_next += delta;
4196
4197 /* FIXME: this should be a separate function */
4198 txn->rsp.eoh += delta;
4199 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4200 txn->hdr_idx.used--;
4201 cur_hdr->len = 0;
4202 cur_end = NULL; /* null-term has been rewritten */
4203 break;
4204
4205 }
4206 }
4207 if (cur_end)
4208 *cur_end = term; /* restore the string terminator */
4209
4210 /* keep the link from this header to next one in case of later
4211 * removal of next header.
4212 */
4213 old_idx = cur_idx;
4214 }
4215 return 0;
4216}
4217
4218
4219/* Apply the filter to the status line in the response buffer <rtr>.
4220 * Returns 0 if nothing has been done, 1 if the filter has been applied,
4221 * or -1 if a replacement resulted in an invalid status line.
4222 */
4223int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4224{
4225 char term;
4226 char *cur_ptr, *cur_end;
4227 int done;
4228 struct http_txn *txn = &t->txn;
4229 int len, delta;
4230
4231
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4232 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4233 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4234 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4235 (exp->action == ACT_ALLOW ||
4236 exp->action == ACT_DENY))
4237 return 0;
4238 else if (exp->action == ACT_REMOVE)
4239 return 0;
4240
4241 done = 0;
4242
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4243 cur_ptr = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4244 cur_end = cur_ptr + txn->rsp.sl.rq.l;
4245
4246 /* Now we have the status line between cur_ptr and cur_end */
4247
4248 /* The annoying part is that pattern matching needs
4249 * that we modify the contents to null-terminate all
4250 * strings before testing them.
4251 */
4252
4253 term = *cur_end;
4254 *cur_end = '\0';
4255
4256 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4257 switch (exp->action) {
4258 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4259 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4260 done = 1;
4261 break;
4262
4263 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4264 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4265 done = 1;
4266 break;
4267
4268 case ACT_REPLACE:
4269 *cur_end = term; /* restore the string terminator */
4270 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4271 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4272 /* FIXME: if the user adds a newline in the replacement, the
4273 * index will not be recalculated for now, and the new line
4274 * will not be counted as a new header.
4275 */
4276
4277 txn->rsp.eoh += delta;
4278 cur_end += delta;
4279
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4280 txn->rsp.sol = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4281 cur_end = (char *)http_parse_stsline(&txn->rsp, rtr->data,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]4282 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4283 cur_ptr, cur_end + 1,
4284 NULL, NULL);
4285 if (unlikely(!cur_end))
4286 return -1;
4287
4288 /* we have a full respnse and we know that we have either a CR
4289 * or an LF at <ptr>.
4290 */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4291 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]4292 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.rq.l, *cur_end == '\r');
4293 /* there is no point trying this regex on headers */
4294 return 1;
4295 }
4296 }
4297 *cur_end = term; /* restore the string terminator */
4298 return done;
4299}
4300
4301
4302
4303/*
4304 * Apply all the resp filters <exp> to all headers in buffer <rtr> of session <t>.
4305 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
4306 * unparsable response.
4307 */
4308int apply_filters_to_response(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4309{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4310 struct http_txn *txn = &t->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4311 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4312 while (exp && !(txn->flags & TX_SVDENY)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4313 int ret;
4314
4315 /*
4316 * The interleaving of transformations and verdicts
4317 * makes it difficult to decide to continue or stop
4318 * the evaluation.
4319 */
4320
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4321 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4322 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4323 exp->action == ACT_PASS)) {
4324 exp = exp->next;
4325 continue;
4326 }
4327
4328 /* Apply the filter to the status line. */
4329 ret = apply_filter_to_sts_line(t, rtr, exp);
4330 if (unlikely(ret < 0))
4331 return -1;
4332
4333 if (likely(ret == 0)) {
4334 /* The filter did not match the response, it can be
4335 * iterated through all headers.
4336 */
4337 apply_filter_to_resp_headers(t, rtr, exp);
4338 }
4339 exp = exp->next;
4340 }
4341 return 0;
4342}
4343
4344
4345
4346/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]4347 * Manage server-side cookies. It can impact performance by about 2% so it is
4348 * desirable to call it only when needed.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4349 */
4350void manage_server_side_cookies(struct session *t, struct buffer *rtr)
4351{
4352 struct http_txn *txn = &t->txn;
4353 char *p1, *p2, *p3, *p4;
4354
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4355 char *cur_ptr, *cur_end, *cur_next;
4356 int cur_idx, old_idx, delta;
4357
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4358 /* Iterate through the headers.
4359 * we start with the start line.
4360 */
4361 old_idx = 0;
4362 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4363
4364 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
4365 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4366 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4367
4368 cur_hdr = &txn->hdr_idx.v[cur_idx];
4369 cur_ptr = cur_next;
4370 cur_end = cur_ptr + cur_hdr->len;
4371 cur_next = cur_end + cur_hdr->cr + 1;
4372
4373 /* We have one full header between cur_ptr and cur_end, and the
4374 * next header starts at cur_next. We're only interested in
4375 * "Cookie:" headers.
4376 */
4377
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4378 val = http_header_match2(cur_ptr, cur_end, "Set-Cookie", 10);
4379 if (!val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4380 old_idx = cur_idx;
4381 continue;
4382 }
4383
4384 /* OK, right now we know we have a set-cookie at cur_ptr */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4385 txn->flags |= TX_SCK_ANY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4386
4387
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4388 /* maybe we only wanted to see if there was a set-cookie. Note that
4389 * the cookie capture is declared in the fronend.
4390 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4391 if (t->be->cookie_name == NULL &&
4392 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4393 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4394 return;
4395
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4396 p1 = cur_ptr + val; /* first non-space char after 'Set-Cookie:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4397
4398 while (p1 < cur_end) { /* in fact, we'll break after the first cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4399 if (p1 == cur_end || *p1 == ';') /* end of cookie */
4400 break;
4401
4402 /* p1 is at the beginning of the cookie name */
4403 p2 = p1;
4404
4405 while (p2 < cur_end && *p2 != '=' && *p2 != ';')
4406 p2++;
4407
4408 if (p2 == cur_end || *p2 == ';') /* next cookie */
4409 break;
4410
4411 p3 = p2 + 1; /* skip the '=' sign */
4412 if (p3 == cur_end)
4413 break;
4414
4415 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4416 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';')
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4417 p4++;
4418
4419 /* here, we have the cookie name between p1 and p2,
4420 * and its value between p3 and p4.
4421 * we can process it.
4422 */
4423
4424 /* first, let's see if we want to capture it */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4425 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4426 txn->srv_cookie == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4427 (p4 - p1 >= t->fe->capture_namelen) &&
4428 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4429 int log_len = p4 - p1;
4430
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]4431 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4432 Alert("HTTP logging : out of memory.\n");
4433 }
4434
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4435 if (log_len > t->fe->capture_len)
4436 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4437 memcpy(txn->srv_cookie, p1, log_len);
4438 txn->srv_cookie[log_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4439 }
4440
4441 /* now check if we need to process it for persistence */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4442 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4443 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4444 /* Cool... it's the right one */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4445 txn->flags |= TX_SCK_SEEN;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4446
4447 /* If the cookie is in insert mode on a known server, we'll delete
4448 * this occurrence because we'll insert another one later.
4449 * We'll delete it too if the "indirect" option is set and we're in
4450 * a direct access. */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4451 if (((t->srv) && (t->be->options & PR_O_COOK_INS)) ||
4452 ((t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_IND))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4453 /* this header must be deleted */
4454 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4455 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4456 txn->hdr_idx.used--;
4457 cur_hdr->len = 0;
4458 cur_next += delta;
4459 txn->rsp.eoh += delta;
4460
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4461 txn->flags |= TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4462 }
4463 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4464 (t->be->options & PR_O_COOK_RW)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4465 /* replace bytes p3->p4 with the cookie name associated
4466 * with this server since we know it.
4467 */
4468 delta = buffer_replace2(rtr, p3, p4, t->srv->cookie, t->srv->cklen);
4469 cur_hdr->len += delta;
4470 cur_next += delta;
4471 txn->rsp.eoh += delta;
4472
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4473 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4474 }
4475 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4476 (t->be->options & PR_O_COOK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4477 /* insert the cookie name associated with this server
4478 * before existing cookie, and insert a delimitor between them..
4479 */
4480 delta = buffer_replace2(rtr, p3, p3, t->srv->cookie, t->srv->cklen + 1);
4481 cur_hdr->len += delta;
4482 cur_next += delta;
4483 txn->rsp.eoh += delta;
4484
4485 p3[t->srv->cklen] = COOKIE_DELIM;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4486 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4487 }
4488 }
4489 /* next, let's see if the cookie is our appcookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4490 else if ((t->be->appsession_name != NULL) &&
4491 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4492
4493 /* Cool... it's the right one */
4494
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]4495 if (t->sessid != NULL) {
4496 /* free previously allocated memory as we don't need it anymore */
4497 pool_free2(apools.sessid, t->sessid);
4498 }
4499 /* Store the sessid in the session for future use */
4500 if ((t->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4501 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4502 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4503 return;
4504 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]4505 memcpy(t->sessid, p3, t->be->appsession_len);
4506 t->sessid[t->be->appsession_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4507 }/* end if ((t->proxy->appsession_name != NULL) ... */
4508 break; /* we don't want to loop again since there cannot be another cookie on the same line */
4509 } /* we're now at the end of the cookie value */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4510 /* keep the link from this header to next one */
4511 old_idx = cur_idx;
4512 } /* end of cookie processing on this header */
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]4513
4514 if (t->sessid != NULL) {
4515 appsess *asession = NULL;
4516 /* only do insert, if lookup fails */
4517 asession = appsession_hash_lookup(&(t->be->htbl_proxy), t->sessid);
4518 if (asession == NULL) {
4519 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
4520 Alert("Not enough Memory process_srv():asession:calloc().\n");
4521 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
4522 return;
4523 }
4524 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
4525 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4526 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4527 return;
4528 }
4529 memcpy(asession->sessid, t->sessid, t->be->appsession_len);
4530 asession->sessid[t->be->appsession_len] = 0;
4531
4532 size_t server_id_len = strlen(t->srv->id) + 1;
4533 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
4534 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4535 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4536 return;
4537 }
4538 asession->serverid[0] = '\0';
4539 memcpy(asession->serverid, t->srv->id, server_id_len);
4540
4541 asession->request_count = 0;
4542 appsession_hash_insert(&(t->be->htbl_proxy), asession);
4543 }
4544
4545 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
4546 asession->request_count++;
4547 }
4548
4549#if defined(DEBUG_HASH)
4550 Alert("manage_server_side_cookies\n");
4551 appsession_hash_dump(&(t->be->htbl_proxy));
4552#endif
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4553}
4554
4555
4556
4557/*
4558 * Check if response is cacheable or not. Updates t->flags.
4559 */
4560void check_response_for_cacheability(struct session *t, struct buffer *rtr)
4561{
4562 struct http_txn *txn = &t->txn;
4563 char *p1, *p2;
4564
4565 char *cur_ptr, *cur_end, *cur_next;
4566 int cur_idx;
4567
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]4568 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4569 return;
4570
4571 /* Iterate through the headers.
4572 * we start with the start line.
4573 */
4574 cur_idx = 0;
4575 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4576
4577 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4578 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4579 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4580
4581 cur_hdr = &txn->hdr_idx.v[cur_idx];
4582 cur_ptr = cur_next;
4583 cur_end = cur_ptr + cur_hdr->len;
4584 cur_next = cur_end + cur_hdr->cr + 1;
4585
4586 /* We have one full header between cur_ptr and cur_end, and the
4587 * next header starts at cur_next. We're only interested in
4588 * "Cookie:" headers.
4589 */
4590
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4591 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
4592 if (val) {
4593 if ((cur_end - (cur_ptr + val) >= 8) &&
4594 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
4595 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
4596 return;
4597 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4598 }
4599
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4600 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
4601 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4602 continue;
4603
4604 /* OK, right now we know we have a cache-control header at cur_ptr */
4605
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4606 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4607
4608 if (p1 >= cur_end) /* no more info */
4609 continue;
4610
4611 /* p1 is at the beginning of the value */
4612 p2 = p1;
4613
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4614 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4615 p2++;
4616
4617 /* we have a complete value between p1 and p2 */
4618 if (p2 < cur_end && *p2 == '=') {
4619 /* we have something of the form no-cache="set-cookie" */
4620 if ((cur_end - p1 >= 21) &&
4621 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
4622 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4623 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4624 continue;
4625 }
4626
4627 /* OK, so we know that either p2 points to the end of string or to a comma */
4628 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
4629 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
4630 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
4631 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4632 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4633 return;
4634 }
4635
4636 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4637 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4638 continue;
4639 }
4640 }
4641}
4642
4643
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4644/*
4645 * Try to retrieve a known appsession in the URI, then the associated server.
4646 * If the server is found, it's assigned to the session.
4647 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4648void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4649{
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4650 char *request_line;
4651
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4652 if (t->be->appsession_name == NULL ||
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]4653 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST) ||
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4654 (request_line = memchr(begin, ';', len)) == NULL ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4655 ((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]4656 return;
4657
4658 /* skip ';' */
4659 request_line++;
4660
4661 /* look if we have a jsessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4662 if (strncasecmp(request_line, t->be->appsession_name, t->be->appsession_name_len) != 0)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4663 return;
4664
4665 /* skip jsessionid= */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4666 request_line += t->be->appsession_name_len + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4667
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]4668 manage_client_side_appsession(t, request_line);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4669#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4670 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4671 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4672#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4673}
4674
4675
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4676/*
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4677 * In a GET or HEAD request, check if the requested URI matches the stats uri
4678 * for the current backend, and if an authorization has been passed and is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4679 *
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4680 * 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]4681 * 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]4682 * the stats I/O handler will be registered to start sending data.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4683 *
4684 * Returns 1 if the session's state changes, otherwise 0.
4685 */
4686int stats_check_uri_auth(struct session *t, struct proxy *backend)
4687{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4688 struct http_txn *txn = &t->txn;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4689 struct uri_auth *uri_auth = backend->uri_auth;
4690 struct user_auth *user;
4691 int authenticated, cur_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4692 char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4693
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4694 memset(&t->data_ctx.stats, 0, sizeof(t->data_ctx.stats));
4695
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4696 /* check URI size */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4697 if (uri_auth->uri_len > txn->req.sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4698 return 0;
4699
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4700 h = t->req->data + txn->req.sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4701
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4702 /* the URI is in h */
4703 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4704 return 0;
4705
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4706 h += uri_auth->uri_len;
4707 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 3) {
4708 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4709 t->data_ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4710 break;
4711 }
4712 h++;
4713 }
4714
4715 if (uri_auth->refresh) {
4716 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4717 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 10) {
4718 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4719 t->data_ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4720 break;
4721 }
4722 h++;
4723 }
4724 }
4725
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]4726 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4727 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 4) {
4728 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4729 t->data_ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]4730 break;
4731 }
4732 h++;
4733 }
4734
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4735 t->data_ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
4736
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4737 /* we are in front of a interceptable URI. Let's check
4738 * if there's an authentication and if it's valid.
4739 */
4740 user = uri_auth->users;
4741 if (!user) {
4742 /* no user auth required, it's OK */
4743 authenticated = 1;
4744 } else {
4745 authenticated = 0;
4746
4747 /* a user list is defined, we have to check.
4748 * skip 21 chars for "Authorization: Basic ".
4749 */
4750
4751 /* FIXME: this should move to an earlier place */
4752 cur_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4753 h = t->req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
4754 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4755 int len = txn->hdr_idx.v[cur_idx].len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4756 if (len > 14 &&
4757 !strncasecmp("Authorization:", h, 14)) {
Krzysztof Piotr Oledzki6f61b212009-10-04 23:34:15 +0200[diff] [blame]4758 chunk_initlen(&txn->auth_hdr, h, 0, len);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4759 break;
4760 }
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4761 h += len + txn->hdr_idx.v[cur_idx].cr + 1;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4762 }
4763
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4764 if (txn->auth_hdr.len < 21 ||
4765 memcmp(txn->auth_hdr.str + 14, " Basic ", 7))
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4766 user = NULL;
4767
4768 while (user) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4769 if ((txn->auth_hdr.len == user->user_len + 14 + 7)
4770 && !memcmp(txn->auth_hdr.str + 14 + 7,
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4771 user->user_pwd, user->user_len)) {
4772 authenticated = 1;
4773 break;
4774 }
4775 user = user->next;
4776 }
4777 }
4778
4779 if (!authenticated) {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4780 struct chunk msg;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4781
4782 /* no need to go further */
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200[diff] [blame]4783 sprintf(trash, HTTP_401_fmt, uri_auth->auth_realm);
4784 chunk_initlen(&msg, trash, sizeof(trash), strlen(trash));
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4785 txn->status = 401;
Willy Tarreaudded32d2008-11-30 19:48:07 +0100[diff] [blame]4786 stream_int_retnclose(t->req->prod, &msg);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]4787 t->req->analysers = 0;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4788 if (!(t->flags & SN_ERR_MASK))
4789 t->flags |= SN_ERR_PRXCOND;
4790 if (!(t->flags & SN_FINST_MASK))
4791 t->flags |= SN_FINST_R;
4792 return 1;
4793 }
4794
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4795 /* The request is valid, the user is authenticated. Let's start sending
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4796 * data.
4797 */
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]4798 t->logs.tv_request = now;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4799 t->data_source = DATA_SRC_STATS;
4800 t->data_state = DATA_ST_INIT;
Willy Tarreau91e99932008-06-30 07:51:00 +0200[diff] [blame]4801 t->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreaub0c9bc42009-10-04 15:56:38 +0200[diff] [blame]4802 stream_int_register_handler(t->rep->prod, http_stats_io_handler);
4803 t->rep->prod->private = t;
4804 t->rep->prod->st0 = t->rep->prod->st1 = 0;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4805 return 1;
4806}
4807
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4808/*
4809 * Capture a bad request or response and archive it in the proxy's structure.
4810 */
4811void http_capture_bad_message(struct error_snapshot *es, struct session *s,
4812 struct buffer *buf, struct http_msg *msg,
4813 struct proxy *other_end)
4814{
Willy Tarreau2df8d712009-05-01 11:33:17 +0200[diff] [blame]4815 es->len = buf->r - (buf->data + msg->som);
4816 memcpy(es->buf, buf->data + msg->som, MIN(es->len, sizeof(es->buf)));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4817 if (msg->err_pos >= 0)
Willy Tarreau2df8d712009-05-01 11:33:17 +0200[diff] [blame]4818 es->pos = msg->err_pos - msg->som;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4819 else
Willy Tarreau2df8d712009-05-01 11:33:17 +0200[diff] [blame]4820 es->pos = buf->lr - (buf->data + msg->som);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4821 es->when = date; // user-visible date
4822 es->sid = s->uniq_id;
4823 es->srv = s->srv;
4824 es->oe = other_end;
4825 es->src = s->cli_addr;
4826}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4827
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4828/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4829 * Print a debug line with a header
4830 */
4831void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
4832{
4833 int len, max;
4834 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4835 dir, (unsigned short)t->req->prod->fd, (unsigned short)t->req->cons->fd);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4836 max = end - start;
4837 UBOUND(max, sizeof(trash) - len - 1);
4838 len += strlcpy2(trash + len, start, max + 1);
4839 trash[len++] = '\n';
4840 write(1, trash, len);
4841}
4842
4843
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4844/************************************************************************/
4845/* The code below is dedicated to ACL parsing and matching */
4846/************************************************************************/
4847
4848
4849
4850
4851/* 1. Check on METHOD
4852 * We use the pre-parsed method if it is known, and store its number as an
4853 * integer. If it is unknown, we use the pointer and the length.
4854 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4855static int acl_parse_meth(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4856{
4857 int len, meth;
4858
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4859 len = strlen(*text);
4860 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4861
4862 pattern->val.i = meth;
4863 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4864 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4865 if (!pattern->ptr.str)
4866 return 0;
4867 pattern->len = len;
4868 }
4869 return 1;
4870}
4871
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4872static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4873acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, int dir,
4874 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4875{
4876 int meth;
4877 struct http_txn *txn = l7;
4878
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4879 if (!txn)
4880 return 0;
4881
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4882 if (txn->req.msg_state != HTTP_MSG_BODY)
4883 return 0;
4884
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4885 meth = txn->meth;
4886 test->i = meth;
4887 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4888 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4889 /* ensure the indexes are not affected */
4890 return 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4891 test->len = txn->req.sl.rq.m_l;
4892 test->ptr = txn->req.sol;
4893 }
4894 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4895 return 1;
4896}
4897
4898static int acl_match_meth(struct acl_test *test, struct acl_pattern *pattern)
4899{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4900 int icase;
4901
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4902 if (test->i != pattern->val.i)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4903 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4904
4905 if (test->i != HTTP_METH_OTHER)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4906 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4907
4908 /* Other method, we must compare the strings */
4909 if (pattern->len != test->len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4910 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4911
4912 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
4913 if ((icase && strncasecmp(pattern->ptr.str, test->ptr, test->len) != 0) ||
4914 (!icase && strncmp(pattern->ptr.str, test->ptr, test->len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4915 return ACL_PAT_FAIL;
4916 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4917}
4918
4919/* 2. Check on Request/Status Version
4920 * We simply compare strings here.
4921 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4922static int acl_parse_ver(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4923{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4924 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4925 if (!pattern->ptr.str)
4926 return 0;
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4927 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4928 return 1;
4929}
4930
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4931static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4932acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, int dir,
4933 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4934{
4935 struct http_txn *txn = l7;
4936 char *ptr;
4937 int len;
4938
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4939 if (!txn)
4940 return 0;
4941
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4942 if (txn->req.msg_state != HTTP_MSG_BODY)
4943 return 0;
4944
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4945 len = txn->req.sl.rq.v_l;
4946 ptr = txn->req.sol + txn->req.sl.rq.v - txn->req.som;
4947
4948 while ((len-- > 0) && (*ptr++ != '/'));
4949 if (len <= 0)
4950 return 0;
4951
4952 test->ptr = ptr;
4953 test->len = len;
4954
4955 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4956 return 1;
4957}
4958
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4959static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4960acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, int dir,
4961 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4962{
4963 struct http_txn *txn = l7;
4964 char *ptr;
4965 int len;
4966
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4967 if (!txn)
4968 return 0;
4969
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4970 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4971 return 0;
4972
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4973 len = txn->rsp.sl.st.v_l;
4974 ptr = txn->rsp.sol;
4975
4976 while ((len-- > 0) && (*ptr++ != '/'));
4977 if (len <= 0)
4978 return 0;
4979
4980 test->ptr = ptr;
4981 test->len = len;
4982
4983 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4984 return 1;
4985}
4986
4987/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4988static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4989acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, int dir,
4990 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4991{
4992 struct http_txn *txn = l7;
4993 char *ptr;
4994 int len;
4995
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4996 if (!txn)
4997 return 0;
4998
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4999 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5000 return 0;
5001
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5002 len = txn->rsp.sl.st.c_l;
5003 ptr = txn->rsp.sol + txn->rsp.sl.st.c - txn->rsp.som;
5004
5005 test->i = __strl2ui(ptr, len);
5006 test->flags = ACL_TEST_F_VOL_1ST;
5007 return 1;
5008}
5009
5010/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5011static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5012acl_fetch_url(struct proxy *px, struct session *l4, void *l7, int dir,
5013 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5014{
5015 struct http_txn *txn = l7;
5016
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5017 if (!txn)
5018 return 0;
5019
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5020 if (txn->req.msg_state != HTTP_MSG_BODY)
5021 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5022
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5023 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5024 /* ensure the indexes are not affected */
5025 return 0;
5026
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5027 test->len = txn->req.sl.rq.u_l;
5028 test->ptr = txn->req.sol + txn->req.sl.rq.u;
5029
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]5030 /* we do not need to set READ_ONLY because the data is in a buffer */
5031 test->flags = ACL_TEST_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5032 return 1;
5033}
5034
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5035static int
5036acl_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, int dir,
5037 struct acl_expr *expr, struct acl_test *test)
5038{
5039 struct http_txn *txn = l7;
5040
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5041 if (!txn)
5042 return 0;
5043
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5044 if (txn->req.msg_state != HTTP_MSG_BODY)
5045 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5046
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5047 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5048 /* ensure the indexes are not affected */
5049 return 0;
5050
5051 /* Parse HTTP request */
5052 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
5053 test->ptr = (void *)&((struct sockaddr_in *)&l4->srv_addr)->sin_addr;
5054 test->i = AF_INET;
5055
5056 /*
5057 * If we are parsing url in frontend space, we prepare backend stage
5058 * to not parse again the same url ! optimization lazyness...
5059 */
5060 if (px->options & PR_O_HTTP_PROXY)
5061 l4->flags |= SN_ADDR_SET;
5062
5063 test->flags = ACL_TEST_F_READ_ONLY;
5064 return 1;
5065}
5066
5067static int
5068acl_fetch_url_port(struct proxy *px, struct session *l4, void *l7, int dir,
5069 struct acl_expr *expr, struct acl_test *test)
5070{
5071 struct http_txn *txn = l7;
5072
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5073 if (!txn)
5074 return 0;
5075
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5076 if (txn->req.msg_state != HTTP_MSG_BODY)
5077 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5078
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5079 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5080 /* ensure the indexes are not affected */
5081 return 0;
5082
5083 /* Same optimization as url_ip */
5084 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
5085 test->i = ntohs(((struct sockaddr_in *)&l4->srv_addr)->sin_port);
5086
5087 if (px->options & PR_O_HTTP_PROXY)
5088 l4->flags |= SN_ADDR_SET;
5089
5090 test->flags = ACL_TEST_F_READ_ONLY;
5091 return 1;
5092}
5093
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5094/* 5. Check on HTTP header. A pointer to the beginning of the value is returned.
5095 * This generic function is used by both acl_fetch_chdr() and acl_fetch_shdr().
5096 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5097static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5098acl_fetch_hdr(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5099 struct acl_expr *expr, struct acl_test *test)
5100{
5101 struct http_txn *txn = l7;
5102 struct hdr_idx *idx = &txn->hdr_idx;
5103 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5104
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5105 if (!txn)
5106 return 0;
5107
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5108 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5109 /* search for header from the beginning */
5110 ctx->idx = 0;
5111
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5112 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5113 test->flags |= ACL_TEST_F_FETCH_MORE;
5114 test->flags |= ACL_TEST_F_VOL_HDR;
5115 test->len = ctx->vlen;
5116 test->ptr = (char *)ctx->line + ctx->val;
5117 return 1;
5118 }
5119
5120 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5121 test->flags |= ACL_TEST_F_VOL_HDR;
5122 return 0;
5123}
5124
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5125static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5126acl_fetch_chdr(struct proxy *px, struct session *l4, void *l7, int dir,
5127 struct acl_expr *expr, struct acl_test *test)
5128{
5129 struct http_txn *txn = l7;
5130
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5131 if (!txn)
5132 return 0;
5133
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5134 if (txn->req.msg_state != HTTP_MSG_BODY)
5135 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5136
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5137 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5138 /* ensure the indexes are not affected */
5139 return 0;
5140
5141 return acl_fetch_hdr(px, l4, txn, txn->req.sol, expr, test);
5142}
5143
5144static int
5145acl_fetch_shdr(struct proxy *px, struct session *l4, void *l7, int dir,
5146 struct acl_expr *expr, struct acl_test *test)
5147{
5148 struct http_txn *txn = l7;
5149
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5150 if (!txn)
5151 return 0;
5152
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5153 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5154 return 0;
5155
5156 return acl_fetch_hdr(px, l4, txn, txn->rsp.sol, expr, test);
5157}
5158
5159/* 6. Check on HTTP header count. The number of occurrences is returned.
5160 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
5161 */
5162static int
5163acl_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5164 struct acl_expr *expr, struct acl_test *test)
5165{
5166 struct http_txn *txn = l7;
5167 struct hdr_idx *idx = &txn->hdr_idx;
5168 struct hdr_ctx ctx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5169 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5170
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5171 if (!txn)
5172 return 0;
5173
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5174 ctx.idx = 0;
5175 cnt = 0;
5176 while (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, &ctx))
5177 cnt++;
5178
5179 test->i = cnt;
5180 test->flags = ACL_TEST_F_VOL_HDR;
5181 return 1;
5182}
5183
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5184static int
5185acl_fetch_chdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5186 struct acl_expr *expr, struct acl_test *test)
5187{
5188 struct http_txn *txn = l7;
5189
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5190 if (!txn)
5191 return 0;
5192
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5193 if (txn->req.msg_state != HTTP_MSG_BODY)
5194 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5195
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5196 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5197 /* ensure the indexes are not affected */
5198 return 0;
5199
5200 return acl_fetch_hdr_cnt(px, l4, txn, txn->req.sol, expr, test);
5201}
5202
5203static int
5204acl_fetch_shdr_cnt(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
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5209 if (!txn)
5210 return 0;
5211
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5212 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5213 return 0;
5214
5215 return acl_fetch_hdr_cnt(px, l4, txn, txn->rsp.sol, expr, test);
5216}
5217
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5218/* 7. Check on HTTP header's integer value. The integer value is returned.
5219 * FIXME: the type is 'int', it may not be appropriate for everything.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5220 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5221 */
5222static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5223acl_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5224 struct acl_expr *expr, struct acl_test *test)
5225{
5226 struct http_txn *txn = l7;
5227 struct hdr_idx *idx = &txn->hdr_idx;
5228 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5229
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5230 if (!txn)
5231 return 0;
5232
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5233 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5234 /* search for header from the beginning */
5235 ctx->idx = 0;
5236
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5237 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5238 test->flags |= ACL_TEST_F_FETCH_MORE;
5239 test->flags |= ACL_TEST_F_VOL_HDR;
5240 test->i = strl2ic((char *)ctx->line + ctx->val, ctx->vlen);
5241 return 1;
5242 }
5243
5244 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5245 test->flags |= ACL_TEST_F_VOL_HDR;
5246 return 0;
5247}
5248
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5249static int
5250acl_fetch_chdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5251 struct acl_expr *expr, struct acl_test *test)
5252{
5253 struct http_txn *txn = l7;
5254
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5255 if (!txn)
5256 return 0;
5257
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5258 if (txn->req.msg_state != HTTP_MSG_BODY)
5259 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5260
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5261 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5262 /* ensure the indexes are not affected */
5263 return 0;
5264
5265 return acl_fetch_hdr_val(px, l4, txn, txn->req.sol, expr, test);
5266}
5267
5268static int
5269acl_fetch_shdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5270 struct acl_expr *expr, struct acl_test *test)
5271{
5272 struct http_txn *txn = l7;
5273
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5274 if (!txn)
5275 return 0;
5276
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5277 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5278 return 0;
5279
5280 return acl_fetch_hdr_val(px, l4, txn, txn->rsp.sol, expr, test);
5281}
5282
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]5283/* 7. Check on HTTP header's IPv4 address value. The IPv4 address is returned.
5284 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
5285 */
5286static int
5287acl_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, char *sol,
5288 struct acl_expr *expr, struct acl_test *test)
5289{
5290 struct http_txn *txn = l7;
5291 struct hdr_idx *idx = &txn->hdr_idx;
5292 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
5293
5294 if (!txn)
5295 return 0;
5296
5297 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5298 /* search for header from the beginning */
5299 ctx->idx = 0;
5300
5301 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5302 test->flags |= ACL_TEST_F_FETCH_MORE;
5303 test->flags |= ACL_TEST_F_VOL_HDR;
5304 /* Same optimization as url_ip */
5305 memset(&l4->srv_addr.sin_addr, 0, sizeof(l4->srv_addr.sin_addr));
5306 url2ip((char *)ctx->line + ctx->val, &l4->srv_addr.sin_addr);
5307 test->ptr = (void *)&l4->srv_addr.sin_addr;
5308 test->i = AF_INET;
5309 return 1;
5310 }
5311
5312 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5313 test->flags |= ACL_TEST_F_VOL_HDR;
5314 return 0;
5315}
5316
5317static int
5318acl_fetch_chdr_ip(struct proxy *px, struct session *l4, void *l7, int dir,
5319 struct acl_expr *expr, struct acl_test *test)
5320{
5321 struct http_txn *txn = l7;
5322
5323 if (!txn)
5324 return 0;
5325
5326 if (txn->req.msg_state != HTTP_MSG_BODY)
5327 return 0;
5328
5329 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5330 /* ensure the indexes are not affected */
5331 return 0;
5332
5333 return acl_fetch_hdr_ip(px, l4, txn, txn->req.sol, expr, test);
5334}
5335
5336static int
5337acl_fetch_shdr_ip(struct proxy *px, struct session *l4, void *l7, int dir,
5338 struct acl_expr *expr, struct acl_test *test)
5339{
5340 struct http_txn *txn = l7;
5341
5342 if (!txn)
5343 return 0;
5344
5345 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5346 return 0;
5347
5348 return acl_fetch_hdr_ip(px, l4, txn, txn->rsp.sol, expr, test);
5349}
5350
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5351/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
5352 * the first '/' after the possible hostname, and ends before the possible '?'.
5353 */
5354static int
5355acl_fetch_path(struct proxy *px, struct session *l4, void *l7, int dir,
5356 struct acl_expr *expr, struct acl_test *test)
5357{
5358 struct http_txn *txn = l7;
5359 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5360
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5361 if (!txn)
5362 return 0;
5363
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5364 if (txn->req.msg_state != HTTP_MSG_BODY)
5365 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]5366
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5367 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5368 /* ensure the indexes are not affected */
5369 return 0;
5370
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5371 end = txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
5372 ptr = http_get_path(txn);
5373 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5374 return 0;
5375
5376 /* OK, we got the '/' ! */
5377 test->ptr = ptr;
5378
5379 while (ptr < end && *ptr != '?')
5380 ptr++;
5381
5382 test->len = ptr - test->ptr;
5383
5384 /* we do not need to set READ_ONLY because the data is in a buffer */
5385 test->flags = ACL_TEST_F_VOL_1ST;
5386 return 1;
5387}
5388
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]5389static int
5390acl_fetch_proto_http(struct proxy *px, struct session *s, void *l7, int dir,
5391 struct acl_expr *expr, struct acl_test *test)
5392{
5393 struct buffer *req = s->req;
5394 struct http_txn *txn = &s->txn;
5395 struct http_msg *msg = &txn->req;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5396
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]5397 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
5398 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
5399 */
5400
5401 if (!s || !req)
5402 return 0;
5403
5404 if (unlikely(msg->msg_state == HTTP_MSG_BODY)) {
5405 /* Already decoded as OK */
5406 test->flags |= ACL_TEST_F_SET_RES_PASS;
5407 return 1;
5408 }
5409
5410 /* Try to decode HTTP request */
5411 if (likely(req->lr < req->r))
5412 http_msg_analyzer(req, msg, &txn->hdr_idx);
5413
5414 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
5415 if ((msg->msg_state == HTTP_MSG_ERROR) || (req->flags & BF_FULL)) {
5416 test->flags |= ACL_TEST_F_SET_RES_FAIL;
5417 return 1;
5418 }
5419 /* wait for final state */
5420 test->flags |= ACL_TEST_F_MAY_CHANGE;
5421 return 0;
5422 }
5423
5424 /* OK we got a valid HTTP request. We have some minor preparation to
5425 * perform so that further checks can rely on HTTP tests.
5426 */
5427 msg->sol = req->data + msg->som;
5428 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
5429 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
5430 s->flags |= SN_REDIRECTABLE;
5431
5432 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(req, msg, txn)) {
5433 test->flags |= ACL_TEST_F_SET_RES_FAIL;
5434 return 1;
5435 }
5436
5437 test->flags |= ACL_TEST_F_SET_RES_PASS;
5438 return 1;
5439}
5440
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5441
5442/************************************************************************/
5443/* All supported keywords must be declared here. */
5444/************************************************************************/
5445
5446/* Note: must not be declared <const> as its list will be overwritten */
5447static struct acl_kw_list acl_kws = {{ },{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]5448 { "req_proto_http", acl_parse_nothing, acl_fetch_proto_http, acl_match_nothing, ACL_USE_L7REQ_PERMANENT },
5449
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5450 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT },
5451 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5452 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE },
5453 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5454
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5455 { "url", acl_parse_str, acl_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5456 { "url_beg", acl_parse_str, acl_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
5457 { "url_end", acl_parse_str, acl_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE },
5458 { "url_sub", acl_parse_str, acl_fetch_url, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
5459 { "url_dir", acl_parse_str, acl_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
5460 { "url_dom", acl_parse_str, acl_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
5461 { "url_reg", acl_parse_reg, acl_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
5462 { "url_ip", acl_parse_ip, acl_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE },
5463 { "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]5464
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5465 /* note: we should set hdr* to use ACL_USE_HDR_VOLATILE, and chdr* to use L7REQ_VOLATILE */
5466 { "hdr", acl_parse_str, acl_fetch_chdr, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5467 { "hdr_reg", acl_parse_reg, acl_fetch_chdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
5468 { "hdr_beg", acl_parse_str, acl_fetch_chdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
5469 { "hdr_end", acl_parse_str, acl_fetch_chdr, acl_match_end, ACL_USE_L7REQ_VOLATILE },
5470 { "hdr_sub", acl_parse_str, acl_fetch_chdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
5471 { "hdr_dir", acl_parse_str, acl_fetch_chdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
5472 { "hdr_dom", acl_parse_str, acl_fetch_chdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
5473 { "hdr_cnt", acl_parse_int, acl_fetch_chdr_cnt,acl_match_int, ACL_USE_L7REQ_VOLATILE },
5474 { "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]5475 { "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]5476
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5477 { "shdr", acl_parse_str, acl_fetch_shdr, acl_match_str, ACL_USE_L7RTR_VOLATILE },
5478 { "shdr_reg", acl_parse_reg, acl_fetch_shdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE },
5479 { "shdr_beg", acl_parse_str, acl_fetch_shdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE },
5480 { "shdr_end", acl_parse_str, acl_fetch_shdr, acl_match_end, ACL_USE_L7RTR_VOLATILE },
5481 { "shdr_sub", acl_parse_str, acl_fetch_shdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE },
5482 { "shdr_dir", acl_parse_str, acl_fetch_shdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE },
5483 { "shdr_dom", acl_parse_str, acl_fetch_shdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE },
5484 { "shdr_cnt", acl_parse_int, acl_fetch_shdr_cnt,acl_match_int, ACL_USE_L7RTR_VOLATILE },
5485 { "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]5486 { "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]5487
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5488 { "path", acl_parse_str, acl_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5489 { "path_reg", acl_parse_reg, acl_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
5490 { "path_beg", acl_parse_str, acl_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
5491 { "path_end", acl_parse_str, acl_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE },
5492 { "path_sub", acl_parse_str, acl_fetch_path, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
5493 { "path_dir", acl_parse_str, acl_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
5494 { "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]5495
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]5496 { NULL, NULL, NULL, NULL },
5497
5498#if 0
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5499 { "line", acl_parse_str, acl_fetch_line, acl_match_str },
5500 { "line_reg", acl_parse_reg, acl_fetch_line, acl_match_reg },
5501 { "line_beg", acl_parse_str, acl_fetch_line, acl_match_beg },
5502 { "line_end", acl_parse_str, acl_fetch_line, acl_match_end },
5503 { "line_sub", acl_parse_str, acl_fetch_line, acl_match_sub },
5504 { "line_dir", acl_parse_str, acl_fetch_line, acl_match_dir },
5505 { "line_dom", acl_parse_str, acl_fetch_line, acl_match_dom },
5506
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5507 { "cook", acl_parse_str, acl_fetch_cook, acl_match_str },
5508 { "cook_reg", acl_parse_reg, acl_fetch_cook, acl_match_reg },
5509 { "cook_beg", acl_parse_str, acl_fetch_cook, acl_match_beg },
5510 { "cook_end", acl_parse_str, acl_fetch_cook, acl_match_end },
5511 { "cook_sub", acl_parse_str, acl_fetch_cook, acl_match_sub },
5512 { "cook_dir", acl_parse_str, acl_fetch_cook, acl_match_dir },
5513 { "cook_dom", acl_parse_str, acl_fetch_cook, acl_match_dom },
5514 { "cook_pst", acl_parse_none, acl_fetch_cook, acl_match_pst },
5515
5516 { "auth_user", acl_parse_str, acl_fetch_user, acl_match_str },
5517 { "auth_regex", acl_parse_reg, acl_fetch_user, acl_match_reg },
5518 { "auth_clear", acl_parse_str, acl_fetch_auth, acl_match_str },
5519 { "auth_md5", acl_parse_str, acl_fetch_auth, acl_match_md5 },
5520 { NULL, NULL, NULL, NULL },
5521#endif
5522}};
5523
5524
5525__attribute__((constructor))
5526static void __http_protocol_init(void)
5527{
5528 acl_register_keywords(&acl_kws);
5529}
5530
5531
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5532/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5533 * Local variables:
5534 * c-indent-level: 8
5535 * c-basic-offset: 8
5536 * End:
5537 */