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git01.mediatek.com / haproxy / 42ffbf248ba7734837406846dc3f71679da16393 / . / src / proto_http.c
blob: b52607675e3f89944462d1f3deaf38bc256bc8e9 [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreau7c669d72008-06-20 15:04:11 +0200[diff] [blame]4 * Copyright 2000-2008 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <ctype.h>
14#include <errno.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <syslog.h>
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]20#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]21
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]26#include <common/appsession.h>
27#include <common/compat.h>
28#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]29#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]30#include <common/memory.h>
31#include <common/mini-clist.h>
32#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]33#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]34#include <common/time.h>
35#include <common/uri_auth.h>
36#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]37
38#include <types/capture.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]39#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]40
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]41#include <proto/acl.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]42#include <proto/backend.h>
43#include <proto/buffers.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]44#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]45#include <proto/fd.h>
46#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]47#include <proto/hdr_idx.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]48#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]49#include <proto/proto_http.h>
50#include <proto/queue.h>
51#include <proto/session.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]52#include <proto/stream_interface.h>
Willy Tarreau2d212792008-08-27 21:41:35 +0200[diff] [blame]53#include <proto/stream_sock.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]54#include <proto/task.h>
55
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]56#ifdef CONFIG_HAP_TCPSPLICE
57#include <libtcpsplice.h>
58#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]59
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]60#define DEBUG_PARSE_NO_SPEEDUP
61#undef DEBUG_PARSE_NO_SPEEDUP
62
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]63/* This is used to perform a quick jump as an alternative to a break/continue
64 * instruction. The first argument is the label for normal operation, and the
65 * second one is the break/continue instruction in the no_speedup mode.
66 */
67
68#ifdef DEBUG_PARSE_NO_SPEEDUP
69#define QUICK_JUMP(x,y) y
70#else
71#define QUICK_JUMP(x,y) goto x
72#endif
73
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]74/* This is used by remote monitoring */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]75const char HTTP_200[] =
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]76 "HTTP/1.0 200 OK\r\n"
77 "Cache-Control: no-cache\r\n"
78 "Connection: close\r\n"
79 "Content-Type: text/html\r\n"
80 "\r\n"
81 "<html><body><h1>200 OK</h1>\nHAProxy: service ready.\n</body></html>\n";
82
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]83const struct chunk http_200_chunk = {
84 .str = (char *)&HTTP_200,
85 .len = sizeof(HTTP_200)-1
86};
87
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]88const char *HTTP_301 =
89 "HTTP/1.0 301 Moved Permantenly\r\n"
90 "Cache-Control: no-cache\r\n"
91 "Connection: close\r\n"
92 "Location: "; /* not terminated since it will be concatenated with the URL */
93
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]94const char *HTTP_302 =
95 "HTTP/1.0 302 Found\r\n"
96 "Cache-Control: no-cache\r\n"
97 "Connection: close\r\n"
98 "Location: "; /* not terminated since it will be concatenated with the URL */
99
100/* same as 302 except that the browser MUST retry with the GET method */
101const char *HTTP_303 =
102 "HTTP/1.0 303 See Other\r\n"
103 "Cache-Control: no-cache\r\n"
104 "Connection: close\r\n"
105 "Location: "; /* not terminated since it will be concatenated with the URL */
106
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]107/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
108const char *HTTP_401_fmt =
109 "HTTP/1.0 401 Unauthorized\r\n"
110 "Cache-Control: no-cache\r\n"
111 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]112 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]113 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
114 "\r\n"
115 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
116
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]117
118const int http_err_codes[HTTP_ERR_SIZE] = {
119 [HTTP_ERR_400] = 400,
120 [HTTP_ERR_403] = 403,
121 [HTTP_ERR_408] = 408,
122 [HTTP_ERR_500] = 500,
123 [HTTP_ERR_502] = 502,
124 [HTTP_ERR_503] = 503,
125 [HTTP_ERR_504] = 504,
126};
127
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]128static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]129 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]130 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]131 "Cache-Control: no-cache\r\n"
132 "Connection: close\r\n"
133 "Content-Type: text/html\r\n"
134 "\r\n"
135 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
136
137 [HTTP_ERR_403] =
138 "HTTP/1.0 403 Forbidden\r\n"
139 "Cache-Control: no-cache\r\n"
140 "Connection: close\r\n"
141 "Content-Type: text/html\r\n"
142 "\r\n"
143 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
144
145 [HTTP_ERR_408] =
146 "HTTP/1.0 408 Request Time-out\r\n"
147 "Cache-Control: no-cache\r\n"
148 "Connection: close\r\n"
149 "Content-Type: text/html\r\n"
150 "\r\n"
151 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
152
153 [HTTP_ERR_500] =
154 "HTTP/1.0 500 Server Error\r\n"
155 "Cache-Control: no-cache\r\n"
156 "Connection: close\r\n"
157 "Content-Type: text/html\r\n"
158 "\r\n"
159 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
160
161 [HTTP_ERR_502] =
162 "HTTP/1.0 502 Bad Gateway\r\n"
163 "Cache-Control: no-cache\r\n"
164 "Connection: close\r\n"
165 "Content-Type: text/html\r\n"
166 "\r\n"
167 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
168
169 [HTTP_ERR_503] =
170 "HTTP/1.0 503 Service Unavailable\r\n"
171 "Cache-Control: no-cache\r\n"
172 "Connection: close\r\n"
173 "Content-Type: text/html\r\n"
174 "\r\n"
175 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
176
177 [HTTP_ERR_504] =
178 "HTTP/1.0 504 Gateway Time-out\r\n"
179 "Cache-Control: no-cache\r\n"
180 "Connection: close\r\n"
181 "Content-Type: text/html\r\n"
182 "\r\n"
183 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
184
185};
186
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]187/* We must put the messages here since GCC cannot initialize consts depending
188 * on strlen().
189 */
190struct chunk http_err_chunks[HTTP_ERR_SIZE];
191
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]192#define FD_SETS_ARE_BITFIELDS
193#ifdef FD_SETS_ARE_BITFIELDS
194/*
195 * This map is used with all the FD_* macros to check whether a particular bit
196 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
197 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
198 * byte should be encoded. Be careful to always pass bytes from 0 to 255
199 * exclusively to the macros.
200 */
201fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
202fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
203
204#else
205#error "Check if your OS uses bitfields for fd_sets"
206#endif
207
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]208void init_proto_http()
209{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]210 int i;
211 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]212 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]213
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]214 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
215 if (!http_err_msgs[msg]) {
216 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
217 abort();
218 }
219
220 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
221 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
222 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]223
224 /* initialize the log header encoding map : '{|}"#' should be encoded with
225 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
226 * URL encoding only requires '"', '#' to be encoded as well as non-
227 * printable characters above.
228 */
229 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
230 memset(url_encode_map, 0, sizeof(url_encode_map));
231 for (i = 0; i < 32; i++) {
232 FD_SET(i, hdr_encode_map);
233 FD_SET(i, url_encode_map);
234 }
235 for (i = 127; i < 256; i++) {
236 FD_SET(i, hdr_encode_map);
237 FD_SET(i, url_encode_map);
238 }
239
240 tmp = "\"#{|}";
241 while (*tmp) {
242 FD_SET(*tmp, hdr_encode_map);
243 tmp++;
244 }
245
246 tmp = "\"#";
247 while (*tmp) {
248 FD_SET(*tmp, url_encode_map);
249 tmp++;
250 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]251
252 /* memory allocations */
253 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]254 pool2_capture = create_pool("capture", CAPTURE_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]255}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]256
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]257/*
258 * We have 26 list of methods (1 per first letter), each of which can have
259 * up to 3 entries (2 valid, 1 null).
260 */
261struct http_method_desc {
262 http_meth_t meth;
263 int len;
264 const char text[8];
265};
266
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]267const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]268 ['C' - 'A'] = {
269 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
270 },
271 ['D' - 'A'] = {
272 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
273 },
274 ['G' - 'A'] = {
275 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
276 },
277 ['H' - 'A'] = {
278 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
279 },
280 ['P' - 'A'] = {
281 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
282 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
283 },
284 ['T' - 'A'] = {
285 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
286 },
287 /* rest is empty like this :
288 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
289 */
290};
291
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]292/* It is about twice as fast on recent architectures to lookup a byte in a
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]293 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]294 * RFC2616 for those chars.
295 */
296
297const char http_is_spht[256] = {
298 [' '] = 1, ['\t'] = 1,
299};
300
301const char http_is_crlf[256] = {
302 ['\r'] = 1, ['\n'] = 1,
303};
304
305const char http_is_lws[256] = {
306 [' '] = 1, ['\t'] = 1,
307 ['\r'] = 1, ['\n'] = 1,
308};
309
310const char http_is_sep[256] = {
311 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
312 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
313 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
314 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
315 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
316};
317
318const char http_is_ctl[256] = {
319 [0 ... 31] = 1,
320 [127] = 1,
321};
322
323/*
324 * A token is any ASCII char that is neither a separator nor a CTL char.
325 * Do not overwrite values in assignment since gcc-2.95 will not handle
326 * them correctly. Instead, define every non-CTL char's status.
327 */
328const char http_is_token[256] = {
329 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
330 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
331 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
332 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
333 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
334 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
335 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
336 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
337 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
338 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
339 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
340 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
341 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
342 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
343 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
344 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
345 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
346 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
347 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
348 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
349 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
350 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
351 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
352 ['|'] = 1, ['}'] = 0, ['~'] = 1,
353};
354
355
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]356/*
357 * An http ver_token is any ASCII which can be found in an HTTP version,
358 * which includes 'H', 'T', 'P', '/', '.' and any digit.
359 */
360const char http_is_ver_token[256] = {
361 ['.'] = 1, ['/'] = 1,
362 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
363 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
364 ['H'] = 1, ['P'] = 1, ['T'] = 1,
365};
366
367
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]368#ifdef DEBUG_FULL
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]369static char *cli_stnames[4] = { "DAT", "SHR", "SHW", "CLS" };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]370#endif
371
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]372/*
373 * Adds a header and its CRLF at the tail of buffer <b>, just before the last
374 * CRLF. Text length is measured first, so it cannot be NULL.
375 * The header is also automatically added to the index <hdr_idx>, and the end
376 * of headers is automatically adjusted. The number of bytes added is returned
377 * on success, otherwise <0 is returned indicating an error.
378 */
379int http_header_add_tail(struct buffer *b, struct http_msg *msg,
380 struct hdr_idx *hdr_idx, const char *text)
381{
382 int bytes, len;
383
384 len = strlen(text);
385 bytes = buffer_insert_line2(b, b->data + msg->eoh, text, len);
386 if (!bytes)
387 return -1;
388 msg->eoh += bytes;
389 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
390}
391
392/*
393 * Adds a header and its CRLF at the tail of buffer <b>, just before the last
394 * CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
395 * the buffer is only opened and the space reserved, but nothing is copied.
396 * The header is also automatically added to the index <hdr_idx>, and the end
397 * of headers is automatically adjusted. The number of bytes added is returned
398 * on success, otherwise <0 is returned indicating an error.
399 */
400int http_header_add_tail2(struct buffer *b, struct http_msg *msg,
401 struct hdr_idx *hdr_idx, const char *text, int len)
402{
403 int bytes;
404
405 bytes = buffer_insert_line2(b, b->data + msg->eoh, text, len);
406 if (!bytes)
407 return -1;
408 msg->eoh += bytes;
409 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
410}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]411
412/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]413 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
414 * If so, returns the position of the first non-space character relative to
415 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
416 * to return a pointer to the place after the first space. Returns 0 if the
417 * header name does not match. Checks are case-insensitive.
418 */
419int http_header_match2(const char *hdr, const char *end,
420 const char *name, int len)
421{
422 const char *val;
423
424 if (hdr + len >= end)
425 return 0;
426 if (hdr[len] != ':')
427 return 0;
428 if (strncasecmp(hdr, name, len) != 0)
429 return 0;
430 val = hdr + len + 1;
431 while (val < end && HTTP_IS_SPHT(*val))
432 val++;
433 if ((val >= end) && (len + 2 <= end - hdr))
434 return len + 2; /* we may replace starting from second space */
435 return val - hdr;
436}
437
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]438/* Find the end of the header value contained between <s> and <e>.
439 * See RFC2616, par 2.2 for more information. Note that it requires
440 * a valid header to return a valid result.
441 */
442const char *find_hdr_value_end(const char *s, const char *e)
443{
444 int quoted, qdpair;
445
446 quoted = qdpair = 0;
447 for (; s < e; s++) {
448 if (qdpair) qdpair = 0;
449 else if (quoted && *s == '\\') qdpair = 1;
450 else if (quoted && *s == '"') quoted = 0;
451 else if (*s == '"') quoted = 1;
452 else if (*s == ',') return s;
453 }
454 return s;
455}
456
457/* Find the first or next occurrence of header <name> in message buffer <sol>
458 * using headers index <idx>, and return it in the <ctx> structure. This
459 * structure holds everything necessary to use the header and find next
460 * occurrence. If its <idx> member is 0, the header is searched from the
461 * beginning. Otherwise, the next occurrence is returned. The function returns
462 * 1 when it finds a value, and 0 when there is no more.
463 */
464int http_find_header2(const char *name, int len,
465 const char *sol, struct hdr_idx *idx,
466 struct hdr_ctx *ctx)
467{
468 __label__ return_hdr, next_hdr;
469 const char *eol, *sov;
470 int cur_idx;
471
472 if (ctx->idx) {
473 /* We have previously returned a value, let's search
474 * another one on the same line.
475 */
476 cur_idx = ctx->idx;
477 sol = ctx->line;
478 sov = sol + ctx->val + ctx->vlen;
479 eol = sol + idx->v[cur_idx].len;
480
481 if (sov >= eol)
482 /* no more values in this header */
483 goto next_hdr;
484
485 /* values remaining for this header, skip the comma */
486 sov++;
487 while (sov < eol && http_is_lws[(unsigned char)*sov])
488 sov++;
489
490 goto return_hdr;
491 }
492
493 /* first request for this header */
494 sol += hdr_idx_first_pos(idx);
495 cur_idx = hdr_idx_first_idx(idx);
496
497 while (cur_idx) {
498 eol = sol + idx->v[cur_idx].len;
499
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]500 if (len == 0) {
501 /* No argument was passed, we want any header.
502 * To achieve this, we simply build a fake request. */
503 while (sol + len < eol && sol[len] != ':')
504 len++;
505 name = sol;
506 }
507
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]508 if ((len < eol - sol) &&
509 (sol[len] == ':') &&
510 (strncasecmp(sol, name, len) == 0)) {
511
512 sov = sol + len + 1;
513 while (sov < eol && http_is_lws[(unsigned char)*sov])
514 sov++;
515 return_hdr:
516 ctx->line = sol;
517 ctx->idx = cur_idx;
518 ctx->val = sov - sol;
519
520 eol = find_hdr_value_end(sov, eol);
521 ctx->vlen = eol - sov;
522 return 1;
523 }
524 next_hdr:
525 sol = eol + idx->v[cur_idx].cr + 1;
526 cur_idx = idx->v[cur_idx].next;
527 }
528 return 0;
529}
530
531int http_find_header(const char *name,
532 const char *sol, struct hdr_idx *idx,
533 struct hdr_ctx *ctx)
534{
535 return http_find_header2(name, strlen(name), sol, idx, ctx);
536}
537
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]538/* This function handles a server error at the stream interface level. The
539 * stream interface is assumed to be already in a closed state. An optional
540 * message is copied into the input buffer, and an HTTP status code stored.
541 * The error flags are set to the values in arguments. Any pending request
542 * is flushed.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]543 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]544static void http_server_error(struct session *t, struct stream_interface *si,
545 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]546{
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]547 buffer_flush(si->ob);
548 buffer_flush(si->ib);
549 buffer_write_ena(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]550 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]551 t->txn.status = status;
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]552 buffer_write(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]553 }
554 if (!(t->flags & SN_ERR_MASK))
555 t->flags |= err;
556 if (!(t->flags & SN_FINST_MASK))
557 t->flags |= finst;
558}
559
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]560/* This function returns the appropriate error location for the given session
561 * and message.
562 */
563
564struct chunk *error_message(struct session *s, int msgnum)
565{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]566 if (s->be->errmsg[msgnum].str)
567 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]568 else if (s->fe->errmsg[msgnum].str)
569 return &s->fe->errmsg[msgnum];
570 else
571 return &http_err_chunks[msgnum];
572}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]573
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]574/*
575 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
576 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
577 */
578static http_meth_t find_http_meth(const char *str, const int len)
579{
580 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]581 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]582
583 m = ((unsigned)*str - 'A');
584
585 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]586 for (h = http_methods[m]; h->len > 0; h++) {
587 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]588 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]589 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]590 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]591 };
592 return HTTP_METH_OTHER;
593 }
594 return HTTP_METH_NONE;
595
596}
597
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]598/* Parse the URI from the given transaction (which is assumed to be in request
599 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
600 * It is returned otherwise.
601 */
602static char *
603http_get_path(struct http_txn *txn)
604{
605 char *ptr, *end;
606
607 ptr = txn->req.sol + txn->req.sl.rq.u;
608 end = ptr + txn->req.sl.rq.u_l;
609
610 if (ptr >= end)
611 return NULL;
612
613 /* RFC2616, par. 5.1.2 :
614 * Request-URI = "*" | absuri | abspath | authority
615 */
616
617 if (*ptr == '*')
618 return NULL;
619
620 if (isalpha((unsigned char)*ptr)) {
621 /* this is a scheme as described by RFC3986, par. 3.1 */
622 ptr++;
623 while (ptr < end &&
624 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
625 ptr++;
626 /* skip '://' */
627 if (ptr == end || *ptr++ != ':')
628 return NULL;
629 if (ptr == end || *ptr++ != '/')
630 return NULL;
631 if (ptr == end || *ptr++ != '/')
632 return NULL;
633 }
634 /* skip [user[:passwd]@]host[:[port]] */
635
636 while (ptr < end && *ptr != '/')
637 ptr++;
638
639 if (ptr == end)
640 return NULL;
641
642 /* OK, we got the '/' ! */
643 return ptr;
644}
645
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]646/* Returns a 302 for a redirectable request. This may only be called just after
647 * the stream interface has moved to SI_ST_ASS. Unprocessable requests are
648 * left unchanged and will follow normal proxy processing.
649 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]650void perform_http_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]651{
652 struct http_txn *txn;
653 struct chunk rdr;
654 char *path;
655 int len;
656
657 /* 1: create the response header */
658 rdr.len = strlen(HTTP_302);
659 rdr.str = trash;
660 memcpy(rdr.str, HTTP_302, rdr.len);
661
662 /* 2: add the server's prefix */
663 if (rdr.len + s->srv->rdr_len > sizeof(trash))
664 return;
665
666 memcpy(rdr.str + rdr.len, s->srv->rdr_pfx, s->srv->rdr_len);
667 rdr.len += s->srv->rdr_len;
668
669 /* 3: add the request URI */
670 txn = &s->txn;
671 path = http_get_path(txn);
672 if (!path)
673 return;
674
675 len = txn->req.sl.rq.u_l + (txn->req.sol+txn->req.sl.rq.u) - path;
676 if (rdr.len + len > sizeof(trash) - 4) /* 4 for CRLF-CRLF */
677 return;
678
679 memcpy(rdr.str + rdr.len, path, len);
680 rdr.len += len;
681 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
682 rdr.len += 4;
683
684 /* prepare to return without error. */
Willy Tarreau99126c32008-11-27 10:30:51 +0100[diff] [blame]685 si->shutr(si);
686 si->shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]687 si->err_type = SI_ET_NONE;
688 si->err_loc = NULL;
689 si->state = SI_ST_CLO;
690
691 /* send the message */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]692 http_server_error(s, si, SN_ERR_PRXCOND, SN_FINST_C, 302, &rdr);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]693
694 /* FIXME: we should increase a counter of redirects per server and per backend. */
695 if (s->srv)
696 s->srv->cum_sess++;
697}
698
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]699/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]700 * that the server side is closed. Note that err_type is actually a
701 * bitmask, where almost only aborts may be cumulated with other
702 * values. We consider that aborted operations are more important
703 * than timeouts or errors due to the fact that nobody else in the
704 * logs might explain incomplete retries. All others should avoid
705 * being cumulated. It should normally not be possible to have multiple
706 * aborts at once, but just in case, the first one in sequence is reported.
707 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]708void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]709{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]710 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]711
712 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]713 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
714 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]715 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]716 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
717 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]718 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]719 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
720 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]721 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]722 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
723 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]724 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]725 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
726 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]727 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]728 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
729 503, error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]730 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]731 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
732 500, error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]733}
734
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]735extern const char sess_term_cond[8];
736extern const char sess_fin_state[8];
737extern const char *monthname[12];
738const char sess_cookie[4] = "NIDV"; /* No cookie, Invalid cookie, cookie for a Down server, Valid cookie */
739const char sess_set_cookie[8] = "N1I3PD5R"; /* No set-cookie, unknown, Set-Cookie Inserted, unknown,
740 Set-cookie seen and left unchanged (passive), Set-cookie Deleted,
741 unknown, Set-cookie Rewritten */
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]742struct pool_head *pool2_requri;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]743struct pool_head *pool2_capture;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]744
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]745/*
746 * send a log for the session when we have enough info about it.
747 * Will not log if the frontend has no log defined.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]748 */
Willy Tarreau55a8d0e2008-11-30 18:47:21 +0100[diff] [blame]749void http_sess_log(struct session *s)
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]750{
751 char pn[INET6_ADDRSTRLEN + strlen(":65535")];
752 struct proxy *fe = s->fe;
753 struct proxy *be = s->be;
754 struct proxy *prx_log;
755 struct http_txn *txn = &s->txn;
756 int tolog;
757 char *uri, *h;
758 char *svid;
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]759 struct tm tm;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]760 static char tmpline[MAX_SYSLOG_LEN];
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]761 int t_request;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]762 int hdr;
763
764 if (fe->logfac1 < 0 && fe->logfac2 < 0)
765 return;
766 prx_log = fe;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]767
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]768 if (s->cli_addr.ss_family == AF_INET)
769 inet_ntop(AF_INET,
770 (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
771 pn, sizeof(pn));
772 else
773 inet_ntop(AF_INET6,
774 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
775 pn, sizeof(pn));
776
Willy Tarreaub7f694f2008-06-22 17:18:02 +0200[diff] [blame]777 get_localtime(s->logs.accept_date.tv_sec, &tm);
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]778
779 /* FIXME: let's limit ourselves to frontend logging for now. */
780 tolog = fe->to_log;
781
782 h = tmpline;
783 if (fe->to_log & LW_REQHDR &&
784 txn->req.cap &&
785 (h < tmpline + sizeof(tmpline) - 10)) {
786 *(h++) = ' ';
787 *(h++) = '{';
788 for (hdr = 0; hdr < fe->nb_req_cap; hdr++) {
789 if (hdr)
790 *(h++) = '|';
791 if (txn->req.cap[hdr] != NULL)
792 h = encode_string(h, tmpline + sizeof(tmpline) - 7,
793 '#', hdr_encode_map, txn->req.cap[hdr]);
794 }
795 *(h++) = '}';
796 }
797
798 if (fe->to_log & LW_RSPHDR &&
799 txn->rsp.cap &&
800 (h < tmpline + sizeof(tmpline) - 7)) {
801 *(h++) = ' ';
802 *(h++) = '{';
803 for (hdr = 0; hdr < fe->nb_rsp_cap; hdr++) {
804 if (hdr)
805 *(h++) = '|';
806 if (txn->rsp.cap[hdr] != NULL)
807 h = encode_string(h, tmpline + sizeof(tmpline) - 4,
808 '#', hdr_encode_map, txn->rsp.cap[hdr]);
809 }
810 *(h++) = '}';
811 }
812
813 if (h < tmpline + sizeof(tmpline) - 4) {
814 *(h++) = ' ';
815 *(h++) = '"';
816 uri = txn->uri ? txn->uri : "<BADREQ>";
817 h = encode_string(h, tmpline + sizeof(tmpline) - 1,
818 '#', url_encode_map, uri);
819 *(h++) = '"';
820 }
821 *h = '\0';
822
823 svid = (tolog & LW_SVID) ?
824 (s->data_source != DATA_SRC_STATS) ?
825 (s->srv != NULL) ? s->srv->id : "<NOSRV>" : "<STATS>" : "-";
826
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]827 t_request = -1;
828 if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept))
829 t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->logs.tv_request);
830
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]831 send_log(prx_log, LOG_INFO,
832 "%s:%d [%02d/%s/%04d:%02d:%02d:%02d.%03d]"
833 " %s %s/%s %d/%d/%d/%d/%s%d %d %s%lld"
Krzysztof Piotr Oledzki25b501a2008-01-06 16:36:16 +0100[diff] [blame]834 " %s %s %c%c%c%c %d/%d/%d/%d/%s%u %d/%d%s\n",
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]835 pn,
836 (s->cli_addr.ss_family == AF_INET) ?
837 ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port) :
838 ntohs(((struct sockaddr_in6 *)&s->cli_addr)->sin6_port),
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]839 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
Willy Tarreaub7f694f2008-06-22 17:18:02 +0200[diff] [blame]840 tm.tm_hour, tm.tm_min, tm.tm_sec, s->logs.accept_date.tv_usec/1000,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]841 fe->id, be->id, svid,
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]842 t_request,
843 (s->logs.t_queue >= 0) ? s->logs.t_queue - t_request : -1,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]844 (s->logs.t_connect >= 0) ? s->logs.t_connect - s->logs.t_queue : -1,
845 (s->logs.t_data >= 0) ? s->logs.t_data - s->logs.t_connect : -1,
846 (tolog & LW_BYTES) ? "" : "+", s->logs.t_close,
847 txn->status,
Willy Tarreau8b3977f2008-01-18 11:16:32 +0100[diff] [blame]848 (tolog & LW_BYTES) ? "" : "+", s->logs.bytes_out,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]849 txn->cli_cookie ? txn->cli_cookie : "-",
850 txn->srv_cookie ? txn->srv_cookie : "-",
851 sess_term_cond[(s->flags & SN_ERR_MASK) >> SN_ERR_SHIFT],
852 sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_FINST_SHIFT],
853 (be->options & PR_O_COOK_ANY) ? sess_cookie[(txn->flags & TX_CK_MASK) >> TX_CK_SHIFT] : '-',
854 (be->options & PR_O_COOK_ANY) ? sess_set_cookie[(txn->flags & TX_SCK_MASK) >> TX_SCK_SHIFT] : '-',
855 actconn, fe->feconn, be->beconn, s->srv ? s->srv->cur_sess : 0,
Krzysztof Piotr Oledzki25b501a2008-01-06 16:36:16 +0100[diff] [blame]856 (s->flags & SN_REDISP)?"+":"",
857 (s->conn_retries>0)?(be->conn_retries - s->conn_retries):be->conn_retries,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]858 s->logs.srv_queue_size, s->logs.prx_queue_size, tmpline);
859
860 s->logs.logwait = 0;
861}
862
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]863
864/*
865 * Capture headers from message starting at <som> according to header list
866 * <cap_hdr>, and fill the <idx> structure appropriately.
867 */
868void capture_headers(char *som, struct hdr_idx *idx,
869 char **cap, struct cap_hdr *cap_hdr)
870{
871 char *eol, *sol, *col, *sov;
872 int cur_idx;
873 struct cap_hdr *h;
874 int len;
875
876 sol = som + hdr_idx_first_pos(idx);
877 cur_idx = hdr_idx_first_idx(idx);
878
879 while (cur_idx) {
880 eol = sol + idx->v[cur_idx].len;
881
882 col = sol;
883 while (col < eol && *col != ':')
884 col++;
885
886 sov = col + 1;
887 while (sov < eol && http_is_lws[(unsigned char)*sov])
888 sov++;
889
890 for (h = cap_hdr; h; h = h->next) {
891 if ((h->namelen == col - sol) &&
892 (strncasecmp(sol, h->name, h->namelen) == 0)) {
893 if (cap[h->index] == NULL)
894 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]895 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]896
897 if (cap[h->index] == NULL) {
898 Alert("HTTP capture : out of memory.\n");
899 continue;
900 }
901
902 len = eol - sov;
903 if (len > h->len)
904 len = h->len;
905
906 memcpy(cap[h->index], sov, len);
907 cap[h->index][len]=0;
908 }
909 }
910 sol = eol + idx->v[cur_idx].cr + 1;
911 cur_idx = idx->v[cur_idx].next;
912 }
913}
914
915
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]916/* either we find an LF at <ptr> or we jump to <bad>.
917 */
918#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
919
920/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
921 * otherwise to <http_msg_ood> with <state> set to <st>.
922 */
923#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
924 ptr++; \
925 if (likely(ptr < end)) \
926 goto good; \
927 else { \
928 state = (st); \
929 goto http_msg_ood; \
930 } \
931 } while (0)
932
933
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]934/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]935 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]936 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
937 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
938 * will give undefined results.
939 * Note that it is upon the caller's responsibility to ensure that ptr < end,
940 * and that msg->sol points to the beginning of the response.
941 * If a complete line is found (which implies that at least one CR or LF is
942 * found before <end>, the updated <ptr> is returned, otherwise NULL is
943 * returned indicating an incomplete line (which does not mean that parts have
944 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
945 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
946 * upon next call.
947 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]948 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]949 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
950 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]951 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]952 */
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]953const char *http_parse_stsline(struct http_msg *msg, const char *msg_buf,
954 unsigned int state, const char *ptr, const char *end,
955 char **ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]956{
957 __label__
958 http_msg_rpver,
959 http_msg_rpver_sp,
960 http_msg_rpcode,
961 http_msg_rpcode_sp,
962 http_msg_rpreason,
963 http_msg_rpline_eol,
964 http_msg_ood, /* out of data */
965 http_msg_invalid;
966
967 switch (state) {
968 http_msg_rpver:
969 case HTTP_MSG_RPVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]970 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]971 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
972
973 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]974 msg->sl.st.v_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]975 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
976 }
977 goto http_msg_invalid;
978
979 http_msg_rpver_sp:
980 case HTTP_MSG_RPVER_SP:
981 if (likely(!HTTP_IS_LWS(*ptr))) {
982 msg->sl.st.c = ptr - msg_buf;
983 goto http_msg_rpcode;
984 }
985 if (likely(HTTP_IS_SPHT(*ptr)))
986 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
987 /* so it's a CR/LF, this is invalid */
988 goto http_msg_invalid;
989
990 http_msg_rpcode:
991 case HTTP_MSG_RPCODE:
992 if (likely(!HTTP_IS_LWS(*ptr)))
993 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
994
995 if (likely(HTTP_IS_SPHT(*ptr))) {
996 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
997 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
998 }
999
1000 /* so it's a CR/LF, so there is no reason phrase */
1001 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
1002 http_msg_rsp_reason:
1003 /* FIXME: should we support HTTP responses without any reason phrase ? */
1004 msg->sl.st.r = ptr - msg_buf;
1005 msg->sl.st.r_l = 0;
1006 goto http_msg_rpline_eol;
1007
1008 http_msg_rpcode_sp:
1009 case HTTP_MSG_RPCODE_SP:
1010 if (likely(!HTTP_IS_LWS(*ptr))) {
1011 msg->sl.st.r = ptr - msg_buf;
1012 goto http_msg_rpreason;
1013 }
1014 if (likely(HTTP_IS_SPHT(*ptr)))
1015 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1016 /* so it's a CR/LF, so there is no reason phrase */
1017 goto http_msg_rsp_reason;
1018
1019 http_msg_rpreason:
1020 case HTTP_MSG_RPREASON:
1021 if (likely(!HTTP_IS_CRLF(*ptr)))
1022 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
1023 msg->sl.st.r_l = (ptr - msg_buf) - msg->sl.st.r;
1024 http_msg_rpline_eol:
1025 /* We have seen the end of line. Note that we do not
1026 * necessarily have the \n yet, but at least we know that we
1027 * have EITHER \r OR \n, otherwise the response would not be
1028 * complete. We can then record the response length and return
1029 * to the caller which will be able to register it.
1030 */
1031 msg->sl.st.l = ptr - msg->sol;
1032 return ptr;
1033
1034#ifdef DEBUG_FULL
1035 default:
1036 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1037 exit(1);
1038#endif
1039 }
1040
1041 http_msg_ood:
1042 /* out of data */
1043 if (ret_state)
1044 *ret_state = state;
1045 if (ret_ptr)
1046 *ret_ptr = (char *)ptr;
1047 return NULL;
1048
1049 http_msg_invalid:
1050 /* invalid message */
1051 if (ret_state)
1052 *ret_state = HTTP_MSG_ERROR;
1053 return NULL;
1054}
1055
1056
1057/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1058 * This function parses a request line between <ptr> and <end>, starting with
1059 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1060 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1061 * will give undefined results.
1062 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1063 * and that msg->sol points to the beginning of the request.
1064 * If a complete line is found (which implies that at least one CR or LF is
1065 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1066 * returned indicating an incomplete line (which does not mean that parts have
1067 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1068 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1069 * upon next call.
1070 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1071 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1072 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1073 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1074 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1075 */
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1076const char *http_parse_reqline(struct http_msg *msg, const char *msg_buf,
1077 unsigned int state, const char *ptr, const char *end,
1078 char **ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1079{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1080 __label__
1081 http_msg_rqmeth,
1082 http_msg_rqmeth_sp,
1083 http_msg_rquri,
1084 http_msg_rquri_sp,
1085 http_msg_rqver,
1086 http_msg_rqline_eol,
1087 http_msg_ood, /* out of data */
1088 http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1089
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1090 switch (state) {
1091 http_msg_rqmeth:
1092 case HTTP_MSG_RQMETH:
1093 if (likely(HTTP_IS_TOKEN(*ptr)))
1094 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1095
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1096 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1097 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1098 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1099 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1100
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1101 if (likely(HTTP_IS_CRLF(*ptr))) {
1102 /* HTTP 0.9 request */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1103 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1104 http_msg_req09_uri:
1105 msg->sl.rq.u = ptr - msg_buf;
1106 http_msg_req09_uri_e:
1107 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1108 http_msg_req09_ver:
1109 msg->sl.rq.v = ptr - msg_buf;
1110 msg->sl.rq.v_l = 0;
1111 goto http_msg_rqline_eol;
1112 }
1113 goto http_msg_invalid;
1114
1115 http_msg_rqmeth_sp:
1116 case HTTP_MSG_RQMETH_SP:
1117 if (likely(!HTTP_IS_LWS(*ptr))) {
1118 msg->sl.rq.u = ptr - msg_buf;
1119 goto http_msg_rquri;
1120 }
1121 if (likely(HTTP_IS_SPHT(*ptr)))
1122 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1123 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1124 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1125
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1126 http_msg_rquri:
1127 case HTTP_MSG_RQURI:
1128 if (likely(!HTTP_IS_LWS(*ptr)))
1129 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1130
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1131 if (likely(HTTP_IS_SPHT(*ptr))) {
1132 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1133 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1134 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1135
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1136 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1137 goto http_msg_req09_uri_e;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1138
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1139 http_msg_rquri_sp:
1140 case HTTP_MSG_RQURI_SP:
1141 if (likely(!HTTP_IS_LWS(*ptr))) {
1142 msg->sl.rq.v = ptr - msg_buf;
1143 goto http_msg_rqver;
1144 }
1145 if (likely(HTTP_IS_SPHT(*ptr)))
1146 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1147 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1148 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1149
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1150 http_msg_rqver:
1151 case HTTP_MSG_RQVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1152 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1153 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1154
1155 if (likely(HTTP_IS_CRLF(*ptr))) {
1156 msg->sl.rq.v_l = (ptr - msg_buf) - msg->sl.rq.v;
1157 http_msg_rqline_eol:
1158 /* We have seen the end of line. Note that we do not
1159 * necessarily have the \n yet, but at least we know that we
1160 * have EITHER \r OR \n, otherwise the request would not be
1161 * complete. We can then record the request length and return
1162 * to the caller which will be able to register it.
1163 */
1164 msg->sl.rq.l = ptr - msg->sol;
1165 return ptr;
1166 }
1167
1168 /* neither an HTTP_VER token nor a CRLF */
1169 goto http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1170
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1171#ifdef DEBUG_FULL
1172 default:
1173 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1174 exit(1);
1175#endif
1176 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1177
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1178 http_msg_ood:
1179 /* out of data */
1180 if (ret_state)
1181 *ret_state = state;
1182 if (ret_ptr)
1183 *ret_ptr = (char *)ptr;
1184 return NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1185
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1186 http_msg_invalid:
1187 /* invalid message */
1188 if (ret_state)
1189 *ret_state = HTTP_MSG_ERROR;
1190 return NULL;
1191}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1192
1193
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1194/*
1195 * This function parses an HTTP message, either a request or a response,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1196 * depending on the initial msg->msg_state. It can be preempted everywhere
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1197 * when data are missing and recalled at the exact same location with no
1198 * information loss. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1199 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
1200 * fields.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1201 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1202void http_msg_analyzer(struct buffer *buf, struct http_msg *msg, struct hdr_idx *idx)
1203{
1204 __label__
1205 http_msg_rqbefore,
1206 http_msg_rqbefore_cr,
1207 http_msg_rqmeth,
1208 http_msg_rqline_end,
1209 http_msg_hdr_first,
1210 http_msg_hdr_name,
1211 http_msg_hdr_l1_sp,
1212 http_msg_hdr_l1_lf,
1213 http_msg_hdr_l1_lws,
1214 http_msg_hdr_val,
1215 http_msg_hdr_l2_lf,
1216 http_msg_hdr_l2_lws,
1217 http_msg_complete_header,
1218 http_msg_last_lf,
1219 http_msg_ood, /* out of data */
1220 http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1221
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1222 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1223 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1224
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1225 state = msg->msg_state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1226 ptr = buf->lr;
1227 end = buf->r;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1228
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1229 if (unlikely(ptr >= end))
1230 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1231
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1232 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1233 /*
1234 * First, states that are specific to the response only.
1235 * We check them first so that request and headers are
1236 * closer to each other (accessed more often).
1237 */
1238 http_msg_rpbefore:
1239 case HTTP_MSG_RPBEFORE:
1240 if (likely(HTTP_IS_TOKEN(*ptr))) {
1241 if (likely(ptr == buf->data)) {
1242 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1243 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1244 } else {
1245#if PARSE_PRESERVE_EMPTY_LINES
1246 /* only skip empty leading lines, don't remove them */
1247 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1248 msg->som = ptr - buf->data;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1249#else
1250 /* Remove empty leading lines, as recommended by
1251 * RFC2616. This takes a lot of time because we
1252 * must move all the buffer backwards, but this
1253 * is rarely needed. The method above will be
1254 * cleaner when we'll be able to start sending
1255 * the request from any place in the buffer.
1256 */
1257 buf->lr = ptr;
1258 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1259 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1260 msg->sol = buf->data;
1261 ptr = buf->data;
1262 end = buf->r;
1263#endif
1264 }
1265 hdr_idx_init(idx);
1266 state = HTTP_MSG_RPVER;
1267 goto http_msg_rpver;
1268 }
1269
1270 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1271 goto http_msg_invalid;
1272
1273 if (unlikely(*ptr == '\n'))
1274 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1275 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1276 /* stop here */
1277
1278 http_msg_rpbefore_cr:
1279 case HTTP_MSG_RPBEFORE_CR:
1280 EXPECT_LF_HERE(ptr, http_msg_invalid);
1281 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1282 /* stop here */
1283
1284 http_msg_rpver:
1285 case HTTP_MSG_RPVER:
1286 case HTTP_MSG_RPVER_SP:
1287 case HTTP_MSG_RPCODE:
1288 case HTTP_MSG_RPCODE_SP:
1289 case HTTP_MSG_RPREASON:
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1290 ptr = (char *)http_parse_stsline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1291 &buf->lr, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1292 if (unlikely(!ptr))
1293 return;
1294
1295 /* we have a full response and we know that we have either a CR
1296 * or an LF at <ptr>.
1297 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1298 //fprintf(stderr,"som=%d rq.l=%d *ptr=0x%02x\n", msg->som, msg->sl.st.l, *ptr);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1299 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1300
1301 msg->sol = ptr;
1302 if (likely(*ptr == '\r'))
1303 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1304 goto http_msg_rpline_end;
1305
1306 http_msg_rpline_end:
1307 case HTTP_MSG_RPLINE_END:
1308 /* msg->sol must point to the first of CR or LF. */
1309 EXPECT_LF_HERE(ptr, http_msg_invalid);
1310 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1311 /* stop here */
1312
1313 /*
1314 * Second, states that are specific to the request only
1315 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1316 http_msg_rqbefore:
1317 case HTTP_MSG_RQBEFORE:
1318 if (likely(HTTP_IS_TOKEN(*ptr))) {
1319 if (likely(ptr == buf->data)) {
1320 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1321 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1322 } else {
1323#if PARSE_PRESERVE_EMPTY_LINES
1324 /* only skip empty leading lines, don't remove them */
1325 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1326 msg->som = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1327#else
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1328 /* Remove empty leading lines, as recommended by
1329 * RFC2616. This takes a lot of time because we
1330 * must move all the buffer backwards, but this
1331 * is rarely needed. The method above will be
1332 * cleaner when we'll be able to start sending
1333 * the request from any place in the buffer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1334 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1335 buf->lr = ptr;
1336 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1337 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1338 msg->sol = buf->data;
1339 ptr = buf->data;
1340 end = buf->r;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1341#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1342 }
Willy Tarreauf0d058e2007-01-25 12:03:42 +0100[diff] [blame]1343 /* we will need this when keep-alive will be supported
1344 hdr_idx_init(idx);
1345 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1346 state = HTTP_MSG_RQMETH;
1347 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1348 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1349
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1350 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1351 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1352
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1353 if (unlikely(*ptr == '\n'))
1354 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1355 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1356 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1357
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1358 http_msg_rqbefore_cr:
1359 case HTTP_MSG_RQBEFORE_CR:
1360 EXPECT_LF_HERE(ptr, http_msg_invalid);
1361 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1362 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1363
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1364 http_msg_rqmeth:
1365 case HTTP_MSG_RQMETH:
1366 case HTTP_MSG_RQMETH_SP:
1367 case HTTP_MSG_RQURI:
1368 case HTTP_MSG_RQURI_SP:
1369 case HTTP_MSG_RQVER:
1370 ptr = (char *)http_parse_reqline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1371 &buf->lr, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1372 if (unlikely(!ptr))
1373 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1374
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1375 /* we have a full request and we know that we have either a CR
1376 * or an LF at <ptr>.
1377 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1378 //fprintf(stderr,"som=%d rq.l=%d *ptr=0x%02x\n", msg->som, msg->sl.rq.l, *ptr);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1379 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1380
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1381 msg->sol = ptr;
1382 if (likely(*ptr == '\r'))
1383 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1384 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1385
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1386 http_msg_rqline_end:
1387 case HTTP_MSG_RQLINE_END:
1388 /* check for HTTP/0.9 request : no version information available.
1389 * msg->sol must point to the first of CR or LF.
1390 */
1391 if (unlikely(msg->sl.rq.v_l == 0))
1392 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1393
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1394 EXPECT_LF_HERE(ptr, http_msg_invalid);
1395 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1396 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1397
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1398 /*
1399 * Common states below
1400 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1401 http_msg_hdr_first:
1402 case HTTP_MSG_HDR_FIRST:
1403 msg->sol = ptr;
1404 if (likely(!HTTP_IS_CRLF(*ptr))) {
1405 goto http_msg_hdr_name;
1406 }
1407
1408 if (likely(*ptr == '\r'))
1409 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1410 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1411
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1412 http_msg_hdr_name:
1413 case HTTP_MSG_HDR_NAME:
1414 /* assumes msg->sol points to the first char */
1415 if (likely(HTTP_IS_TOKEN(*ptr)))
1416 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1417
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1418 if (likely(*ptr == ':')) {
1419 msg->col = ptr - buf->data;
1420 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
1421 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1422
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1423 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1424
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1425 http_msg_hdr_l1_sp:
1426 case HTTP_MSG_HDR_L1_SP:
1427 /* assumes msg->sol points to the first char and msg->col to the colon */
1428 if (likely(HTTP_IS_SPHT(*ptr)))
1429 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1430
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1431 /* header value can be basically anything except CR/LF */
1432 msg->sov = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1433
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1434 if (likely(!HTTP_IS_CRLF(*ptr))) {
1435 goto http_msg_hdr_val;
1436 }
1437
1438 if (likely(*ptr == '\r'))
1439 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1440 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1441
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1442 http_msg_hdr_l1_lf:
1443 case HTTP_MSG_HDR_L1_LF:
1444 EXPECT_LF_HERE(ptr, http_msg_invalid);
1445 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lws, HTTP_MSG_HDR_L1_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1446
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1447 http_msg_hdr_l1_lws:
1448 case HTTP_MSG_HDR_L1_LWS:
1449 if (likely(HTTP_IS_SPHT(*ptr))) {
1450 /* replace HT,CR,LF with spaces */
1451 for (; buf->data+msg->sov < ptr; msg->sov++)
1452 buf->data[msg->sov] = ' ';
1453 goto http_msg_hdr_l1_sp;
1454 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1455 /* we had a header consisting only in spaces ! */
1456 msg->eol = buf->data + msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1457 goto http_msg_complete_header;
1458
1459 http_msg_hdr_val:
1460 case HTTP_MSG_HDR_VAL:
1461 /* assumes msg->sol points to the first char, msg->col to the
1462 * colon, and msg->sov points to the first character of the
1463 * value.
1464 */
1465 if (likely(!HTTP_IS_CRLF(*ptr)))
1466 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1467
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1468 msg->eol = ptr;
1469 /* Note: we could also copy eol into ->eoh so that we have the
1470 * real header end in case it ends with lots of LWS, but is this
1471 * really needed ?
1472 */
1473 if (likely(*ptr == '\r'))
1474 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1475 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1476
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1477 http_msg_hdr_l2_lf:
1478 case HTTP_MSG_HDR_L2_LF:
1479 EXPECT_LF_HERE(ptr, http_msg_invalid);
1480 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lws, HTTP_MSG_HDR_L2_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1481
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1482 http_msg_hdr_l2_lws:
1483 case HTTP_MSG_HDR_L2_LWS:
1484 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1485 /* LWS: replace HT,CR,LF with spaces */
1486 for (; msg->eol < ptr; msg->eol++)
1487 *msg->eol = ' ';
1488 goto http_msg_hdr_val;
1489 }
1490 http_msg_complete_header:
1491 /*
1492 * It was a new header, so the last one is finished.
1493 * Assumes msg->sol points to the first char, msg->col to the
1494 * colon, msg->sov points to the first character of the value
1495 * and msg->eol to the first CR or LF so we know how the line
1496 * ends. We insert last header into the index.
1497 */
1498 /*
1499 fprintf(stderr,"registering %-2d bytes : ", msg->eol - msg->sol);
1500 write(2, msg->sol, msg->eol-msg->sol);
1501 fprintf(stderr,"\n");
1502 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1503
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1504 if (unlikely(hdr_idx_add(msg->eol - msg->sol, *msg->eol == '\r',
1505 idx, idx->tail) < 0))
1506 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1507
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1508 msg->sol = ptr;
1509 if (likely(!HTTP_IS_CRLF(*ptr))) {
1510 goto http_msg_hdr_name;
1511 }
1512
1513 if (likely(*ptr == '\r'))
1514 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1515 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1516
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1517 http_msg_last_lf:
1518 case HTTP_MSG_LAST_LF:
1519 /* Assumes msg->sol points to the first of either CR or LF */
1520 EXPECT_LF_HERE(ptr, http_msg_invalid);
1521 ptr++;
1522 buf->lr = ptr;
1523 msg->eoh = msg->sol - buf->data;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1524 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1525 return;
1526#ifdef DEBUG_FULL
1527 default:
1528 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1529 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1530#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1531 }
1532 http_msg_ood:
1533 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1534 msg->msg_state = state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1535 buf->lr = ptr;
1536 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1537
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1538 http_msg_invalid:
1539 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1540 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1541 return;
1542}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1543
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1544/* This function performs all the processing enabled for the current request.
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]1545 * It normally returns zero, but may return 1 if it absolutely needs to be
1546 * called again after other functions. It relies on buffers flags, and updates
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]1547 * t->req->analysers. It might make sense to explode it into several other
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]1548 * functions. Its behaviour is rather simple :
1549 * - all enabled analysers are called in turn from the lower to the higher
1550 * bit.
1551 * - if an analyser does not have enough data, it must return without calling
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]1552 * other ones. It should also probably reset the BF_WRITE_ENA bit to ensure
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]1553 * that unprocessed data will not be forwarded. But that probably depends on
1554 * the protocol. Generally it is not reset in case of errors.
1555 * - if an analyser has enough data, it just has to pass on to the next
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]1556 * analyser without touching BF_WRITE_ENA (it is enabled prior to
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]1557 * analysis).
1558 * - if an analyser thinks it has no added value anymore staying here, it must
1559 * reset its bit from the analysers flags in order not to be called anymore.
1560 *
1561 * In the future, analysers should be able to indicate that they want to be
1562 * called after XXX bytes have been received (or transfered), and the min of
1563 * all's wishes will be used to ring back (unless a special condition occurs).
1564 *
1565 *
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1566 */
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1567int process_request(struct session *t)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1568{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1569 struct buffer *req = t->req;
1570 struct buffer *rep = t->rep;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1571
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]1572 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]1573 now_ms, __FUNCTION__,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]1574 t,
1575 req,
1576 req->rex, req->wex,
1577 req->flags,
1578 req->l,
1579 req->analysers);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1580
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]1581 /* The tcp-inspect analyser is always called alone */
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]1582 if (req->analysers & AN_REQ_INSPECT) {
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1583 struct tcp_rule *rule;
1584 int partial;
1585
Willy Tarreauf495ddf2008-08-17 14:38:41 +0200[diff] [blame]1586 /* We will abort if we encounter a read error. In theory, we
1587 * should not abort if we get a close, it might be valid,
1588 * although very unlikely. FIXME: we'll abort for now, this
1589 * will be easier to change later.
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1590 */
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1591 if (req->flags & BF_READ_ERROR) {
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]1592 req->analysers = 0;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]1593 //t->fe->failed_req++;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1594 if (!(t->flags & SN_ERR_MASK))
1595 t->flags |= SN_ERR_CLICL;
1596 if (!(t->flags & SN_FINST_MASK))
1597 t->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]1598 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1599 }
1600
1601 /* Abort if client read timeout has expired */
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1602 else if (req->flags & BF_READ_TIMEOUT) {
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]1603 req->analysers = 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1604 t->fe->failed_req++;
1605 if (!(t->flags & SN_ERR_MASK))
1606 t->flags |= SN_ERR_CLITO;
1607 if (!(t->flags & SN_FINST_MASK))
1608 t->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]1609 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1610 }
1611
1612 /* We don't know whether we have enough data, so must proceed
1613 * this way :
1614 * - iterate through all rules in their declaration order
1615 * - if one rule returns MISS, it means the inspect delay is
1616 * not over yet, then return immediately, otherwise consider
1617 * it as a non-match.
1618 * - if one rule returns OK, then return OK
1619 * - if one rule returns KO, then return KO
1620 */
1621
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]1622 if (req->flags & BF_SHUTR || tick_is_expired(req->analyse_exp, now_ms))
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1623 partial = 0;
1624 else
1625 partial = ACL_PARTIAL;
1626
1627 list_for_each_entry(rule, &t->fe->tcp_req.inspect_rules, list) {
1628 int ret = ACL_PAT_PASS;
1629
1630 if (rule->cond) {
1631 ret = acl_exec_cond(rule->cond, t->fe, t, NULL, ACL_DIR_REQ | partial);
1632 if (ret == ACL_PAT_MISS) {
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]1633 buffer_write_dis(req);
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1634 /* just set the request timeout once at the beginning of the request */
Willy Tarreauffab5b42008-08-17 18:03:28 +0200[diff] [blame]1635 if (!tick_isset(req->analyse_exp))
1636 req->analyse_exp = tick_add_ifset(now_ms, t->fe->tcp_req.inspect_delay);
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]1637 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1638 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1639
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1640 ret = acl_pass(ret);
1641 if (rule->cond->pol == ACL_COND_UNLESS)
1642 ret = !ret;
1643 }
1644
1645 if (ret) {
1646 /* we have a matching rule. */
1647 if (rule->action == TCP_ACT_REJECT) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]1648 buffer_abort(req);
1649 buffer_abort(rep);
1650 //FIXME: this delete this
1651 //fd_delete(t->cli_fd);
1652 //t->cli_state = CL_STCLOSE;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]1653 req->analysers = 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1654 t->fe->failed_req++;
1655 if (!(t->flags & SN_ERR_MASK))
1656 t->flags |= SN_ERR_PRXCOND;
1657 if (!(t->flags & SN_FINST_MASK))
1658 t->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]1659 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1660 }
1661 /* otherwise accept */
1662 break;
1663 }
1664 }
1665
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]1666 /* if we get there, it means we have no rule which matches, or
1667 * we have an explicit accept, so we apply the default accept.
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1668 */
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]1669 req->analysers &= ~AN_REQ_INSPECT;
Willy Tarreauffab5b42008-08-17 18:03:28 +0200[diff] [blame]1670 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]1671 }
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]1672
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]1673 if (req->analysers & AN_REQ_HTTP_HDR) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1674 /*
1675 * Now parse the partial (or complete) lines.
1676 * We will check the request syntax, and also join multi-line
1677 * headers. An index of all the lines will be elaborated while
1678 * parsing.
1679 *
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1680 * For the parsing, we use a 28 states FSM.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1681 *
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1682 * Here is the information we currently have :
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1683 * req->data + req->som = beginning of request
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1684 * req->data + req->eoh = end of processed headers / start of current one
1685 * req->data + req->eol = end of current header or line (LF or CRLF)
1686 * req->lr = first non-visited byte
1687 * req->r = end of data
1688 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1689
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1690 int cur_idx;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1691 struct http_txn *txn = &t->txn;
1692 struct http_msg *msg = &txn->req;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1693 struct proxy *cur_proxy;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1694
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1695 if (likely(req->lr < req->r))
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1696 http_msg_analyzer(req, msg, &txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1697
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1698 /* 1: we might have to print this header in debug mode */
1699 if (unlikely((global.mode & MODE_DEBUG) &&
1700 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1701 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1702 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1703
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1704 sol = req->data + msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1705 eol = sol + msg->sl.rq.l;
1706 debug_hdr("clireq", t, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1707
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1708 sol += hdr_idx_first_pos(&txn->hdr_idx);
1709 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1710
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1711 while (cur_idx) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1712 eol = sol + txn->hdr_idx.v[cur_idx].len;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1713 debug_hdr("clihdr", t, sol, eol);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1714 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
1715 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1716 }
1717 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1718
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1719
1720 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1721 * Now we quickly check if we have found a full valid request.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1722 * If not so, we check the FD and buffer states before leaving.
1723 * A full request is indicated by the fact that we have seen
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1724 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
1725 * requests are checked first.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1726 *
1727 */
1728
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1729 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1730 /*
1731 * First, let's catch bad requests.
1732 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1733 if (unlikely(msg->msg_state == HTTP_MSG_ERROR))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1734 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1735
1736 /* 1: Since we are in header mode, if there's no space
1737 * left for headers, we won't be able to free more
1738 * later, so the session will never terminate. We
1739 * must terminate it now.
1740 */
Willy Tarreaue393fe22008-08-16 22:18:07 +0200[diff] [blame]1741 if (unlikely(req->flags & BF_FULL)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1742 /* FIXME: check if URI is set and return Status
1743 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1744 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1745 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1746 }
1747
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]1748 /* 2: have we encountered a read error ? */
1749 else if (req->flags & BF_READ_ERROR) {
1750 /* we cannot return any message on error */
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1751 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]1752 req->analysers = 0;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]1753 //t->fe->failed_req++;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1754 if (!(t->flags & SN_ERR_MASK))
1755 t->flags |= SN_ERR_CLICL;
1756 if (!(t->flags & SN_FINST_MASK))
1757 t->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]1758 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1759 }
1760
1761 /* 3: has the read timeout expired ? */
Willy Tarreauffab5b42008-08-17 18:03:28 +0200[diff] [blame]1762 else if (req->flags & BF_READ_TIMEOUT || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1763 /* read timeout : give up with an error message. */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1764 txn->status = 408;
Willy Tarreaudded32d2008-11-30 19:48:07 +0100[diff] [blame]1765 stream_int_retnclose(req->prod, error_message(t, HTTP_ERR_408));
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1766 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]1767 req->analysers = 0;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]1768 t->fe->failed_req++;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1769 if (!(t->flags & SN_ERR_MASK))
1770 t->flags |= SN_ERR_CLITO;
1771 if (!(t->flags & SN_FINST_MASK))
1772 t->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]1773 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1774 }
1775
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]1776 /* 4: have we encountered a close ? */
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]1777 else if (req->flags & BF_SHUTR) {
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]1778 txn->status = 400;
Willy Tarreaudded32d2008-11-30 19:48:07 +0100[diff] [blame]1779 stream_int_retnclose(req->prod, error_message(t, HTTP_ERR_400));
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1780 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]1781 req->analysers = 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1782 t->fe->failed_req++;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]1783
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1784 if (!(t->flags & SN_ERR_MASK))
1785 t->flags |= SN_ERR_CLICL;
1786 if (!(t->flags & SN_FINST_MASK))
1787 t->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]1788 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1789 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1790
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]1791 buffer_write_dis(req);
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1792 /* just set the request timeout once at the beginning of the request */
Willy Tarreauffab5b42008-08-17 18:03:28 +0200[diff] [blame]1793 if (!tick_isset(req->analyse_exp))
1794 req->analyse_exp = tick_add_ifset(now_ms, t->fe->timeout.httpreq);
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]1795
1796 /* we're not ready yet */
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]1797 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1798 }
1799
1800
1801 /****************************************************************
1802 * More interesting part now : we know that we have a complete *
1803 * request which at least looks like HTTP. We have an indicator *
1804 * of each header's length, so we can parse them quickly. *
1805 ****************************************************************/
1806
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]1807 req->analysers &= ~AN_REQ_HTTP_HDR;
Willy Tarreauffab5b42008-08-17 18:03:28 +0200[diff] [blame]1808 req->analyse_exp = TICK_ETERNITY;
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]1809
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1810 /* ensure we keep this pointer to the beginning of the message */
1811 msg->sol = req->data + msg->som;
1812
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1813 /*
1814 * 1: identify the method
1815 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1816 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1817
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]1818 /* we can make use of server redirect on GET and HEAD */
1819 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
1820 t->flags |= SN_REDIRECTABLE;
1821
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1822 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1823 * 2: check if the URI matches the monitor_uri.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1824 * We have to do this for every request which gets in, because
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1825 * the monitor-uri is defined by the frontend.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1826 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1827 if (unlikely((t->fe->monitor_uri_len != 0) &&
1828 (t->fe->monitor_uri_len == msg->sl.rq.u_l) &&
1829 !memcmp(&req->data[msg->sl.rq.u],
1830 t->fe->monitor_uri,
1831 t->fe->monitor_uri_len))) {
1832 /*
1833 * We have found the monitor URI
1834 */
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1835 struct acl_cond *cond;
1836 cur_proxy = t->fe;
1837
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1838 t->flags |= SN_MONITOR;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1839
1840 /* Check if we want to fail this monitor request or not */
1841 list_for_each_entry(cond, &cur_proxy->mon_fail_cond, list) {
1842 int ret = acl_exec_cond(cond, cur_proxy, t, txn, ACL_DIR_REQ);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1843
1844 ret = acl_pass(ret);
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1845 if (cond->pol == ACL_COND_UNLESS)
1846 ret = !ret;
1847
1848 if (ret) {
1849 /* we fail this request, let's return 503 service unavail */
1850 txn->status = 503;
Willy Tarreaudded32d2008-11-30 19:48:07 +0100[diff] [blame]1851 stream_int_retnclose(req->prod, error_message(t, HTTP_ERR_503));
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1852 goto return_prx_cond;
1853 }
1854 }
1855
1856 /* nothing to fail, let's reply normaly */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1857 txn->status = 200;
Willy Tarreaudded32d2008-11-30 19:48:07 +0100[diff] [blame]1858 stream_int_retnclose(req->prod, &http_200_chunk);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1859 goto return_prx_cond;
1860 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]1861
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1862 /*
1863 * 3: Maybe we have to copy the original REQURI for the logs ?
1864 * Note: we cannot log anymore if the request has been
1865 * classified as invalid.
1866 */
1867 if (unlikely(t->logs.logwait & LW_REQ)) {
1868 /* we have a complete HTTP request that we must log */
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]1869 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1870 int urilen = msg->sl.rq.l;
1871
1872 if (urilen >= REQURI_LEN)
1873 urilen = REQURI_LEN - 1;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1874 memcpy(txn->uri, &req->data[msg->som], urilen);
1875 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1876
1877 if (!(t->logs.logwait &= ~LW_REQ))
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]1878 t->do_log(t);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1879 } else {
1880 Alert("HTTP logging : out of memory.\n");
1881 }
1882 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1883
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1884
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1885 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
1886 if (unlikely(msg->sl.rq.v_l == 0)) {
1887 int delta;
1888 char *cur_end;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1889 msg->sol = req->data + msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1890 cur_end = msg->sol + msg->sl.rq.l;
1891 delta = 0;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1892
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1893 if (msg->sl.rq.u_l == 0) {
1894 /* if no URI was set, add "/" */
1895 delta = buffer_replace2(req, cur_end, cur_end, " /", 2);
1896 cur_end += delta;
1897 msg->eoh += delta;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1898 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1899 /* add HTTP version */
1900 delta = buffer_replace2(req, cur_end, cur_end, " HTTP/1.0\r\n", 11);
1901 msg->eoh += delta;
1902 cur_end += delta;
1903 cur_end = (char *)http_parse_reqline(msg, req->data,
1904 HTTP_MSG_RQMETH,
1905 msg->sol, cur_end + 1,
1906 NULL, NULL);
1907 if (unlikely(!cur_end))
1908 goto return_bad_req;
1909
1910 /* we have a full HTTP/1.0 request now and we know that
1911 * we have either a CR or an LF at <ptr>.
1912 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1913 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1914 }
1915
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1916
1917 /* 5: we may need to capture headers */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1918 if (unlikely((t->logs.logwait & LW_REQHDR) && t->fe->req_cap))
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1919 capture_headers(req->data + msg->som, &txn->hdr_idx,
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1920 txn->req.cap, t->fe->req_cap);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1921
1922 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1923 * 6: we will have to evaluate the filters.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1924 * As opposed to version 1.2, now they will be evaluated in the
1925 * filters order and not in the header order. This means that
1926 * each filter has to be validated among all headers.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1927 *
1928 * We can now check whether we want to switch to another
1929 * backend, in which case we will re-check the backend's
1930 * filters and various options. In order to support 3-level
1931 * switching, here's how we should proceed :
1932 *
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1933 * a) run be.
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1934 * if (switch) then switch ->be to the new backend.
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1935 * b) run be if (be != fe).
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1936 * There cannot be any switch from there, so ->be cannot be
1937 * changed anymore.
1938 *
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1939 * => filters always apply to ->be, then ->be may change.
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1940 *
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1941 * The response path will be able to apply either ->be, or
1942 * ->be then ->fe filters in order to match the reverse of
1943 * the forward sequence.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1944 */
1945
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1946 do {
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1947 struct acl_cond *cond;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1948 struct redirect_rule *rule;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1949 struct proxy *rule_set = t->be;
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1950 cur_proxy = t->be;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1951
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1952 /* first check whether we have some ACLs set to redirect this request */
1953 list_for_each_entry(rule, &cur_proxy->redirect_rules, list) {
1954 int ret = acl_exec_cond(rule->cond, cur_proxy, t, txn, ACL_DIR_REQ);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]1955
1956 ret = acl_pass(ret);
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]1957 if (rule->cond->pol == ACL_COND_UNLESS)
1958 ret = !ret;
1959
1960 if (ret) {
1961 struct chunk rdr = { trash, 0 };
1962 const char *msg_fmt;
1963
1964 /* build redirect message */
1965 switch(rule->code) {
1966 case 303:
1967 rdr.len = strlen(HTTP_303);
1968 msg_fmt = HTTP_303;
1969 break;
1970 case 301:
1971 rdr.len = strlen(HTTP_301);
1972 msg_fmt = HTTP_301;
1973 break;
1974 case 302:
1975 default:
1976 rdr.len = strlen(HTTP_302);
1977 msg_fmt = HTTP_302;
1978 break;
1979 }
1980
1981 if (unlikely(rdr.len > sizeof(trash)))
1982 goto return_bad_req;
1983 memcpy(rdr.str, msg_fmt, rdr.len);
1984
1985 switch(rule->type) {
1986 case REDIRECT_TYPE_PREFIX: {
1987 const char *path;
1988 int pathlen;
1989
1990 path = http_get_path(txn);
1991 /* build message using path */
1992 if (path) {
1993 pathlen = txn->req.sl.rq.u_l + (txn->req.sol+txn->req.sl.rq.u) - path;
1994 } else {
1995 path = "/";
1996 pathlen = 1;
1997 }
1998
1999 if (rdr.len + rule->rdr_len + pathlen > sizeof(trash) - 4)
2000 goto return_bad_req;
2001
2002 /* add prefix */
2003 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
2004 rdr.len += rule->rdr_len;
2005
2006 /* add path */
2007 memcpy(rdr.str + rdr.len, path, pathlen);
2008 rdr.len += pathlen;
2009 break;
2010 }
2011 case REDIRECT_TYPE_LOCATION:
2012 default:
2013 if (rdr.len + rule->rdr_len > sizeof(trash) - 4)
2014 goto return_bad_req;
2015
2016 /* add location */
2017 memcpy(rdr.str + rdr.len, rule->rdr_str, rule->rdr_len);
2018 rdr.len += rule->rdr_len;
2019 break;
2020 }
2021
2022 /* add end of headers */
2023 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
2024 rdr.len += 4;
2025
2026 txn->status = rule->code;
2027 /* let's log the request time */
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]2028 t->logs.tv_request = now;
Willy Tarreaudded32d2008-11-30 19:48:07 +0100[diff] [blame]2029 stream_int_retnclose(req->prod, &rdr);
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]2030 goto return_prx_cond;
2031 }
2032 }
2033
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]2034 /* first check whether we have some ACLs set to block this request */
2035 list_for_each_entry(cond, &cur_proxy->block_cond, list) {
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]2036 int ret = acl_exec_cond(cond, cur_proxy, t, txn, ACL_DIR_REQ);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2037
2038 ret = acl_pass(ret);
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]2039 if (cond->pol == ACL_COND_UNLESS)
2040 ret = !ret;
2041
2042 if (ret) {
2043 txn->status = 403;
2044 /* let's log the request time */
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]2045 t->logs.tv_request = now;
Willy Tarreaudded32d2008-11-30 19:48:07 +0100[diff] [blame]2046 stream_int_retnclose(req->prod, error_message(t, HTTP_ERR_403));
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]2047 goto return_prx_cond;
2048 }
2049 }
2050
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2051 /* try headers filters */
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]2052 if (rule_set->req_exp != NULL) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2053 if (apply_filters_to_request(t, req, rule_set->req_exp) < 0)
2054 goto return_bad_req;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]2055 }
2056
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]2057 if (!(t->flags & SN_BE_ASSIGNED) && (t->be != cur_proxy)) {
2058 /* to ensure correct connection accounting on
2059 * the backend, we count the connection for the
2060 * one managing the queue.
2061 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2062 t->be->beconn++;
2063 if (t->be->beconn > t->be->beconn_max)
2064 t->be->beconn_max = t->be->beconn;
2065 t->be->cum_beconn++;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]2066 t->flags |= SN_BE_ASSIGNED;
2067 }
2068
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2069 /* has the request been denied ? */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2070 if (txn->flags & TX_CLDENY) {
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2071 /* no need to go further */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2072 txn->status = 403;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2073 /* let's log the request time */
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]2074 t->logs.tv_request = now;
Willy Tarreaudded32d2008-11-30 19:48:07 +0100[diff] [blame]2075 stream_int_retnclose(req->prod, error_message(t, HTTP_ERR_403));
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2076 goto return_prx_cond;
2077 }
2078
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2079 /* We might have to check for "Connection:" */
Krzysztof Oledzki336d4752007-12-25 02:40:22 +0100[diff] [blame]2080 if (((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2081 !(t->flags & SN_CONN_CLOSED)) {
2082 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2083 int cur_idx, old_idx, delta, val;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2084 struct hdr_idx_elem *cur_hdr;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2085
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]2086 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2087 old_idx = 0;
2088
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]2089 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
2090 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2091 cur_ptr = cur_next;
2092 cur_end = cur_ptr + cur_hdr->len;
2093 cur_next = cur_end + cur_hdr->cr + 1;
2094
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2095 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
2096 if (val) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2097 /* 3 possibilities :
2098 * - we have already set Connection: close,
2099 * so we remove this line.
2100 * - we have not yet set Connection: close,
2101 * but this line indicates close. We leave
2102 * it untouched and set the flag.
2103 * - we have not yet set Connection: close,
2104 * and this line indicates non-close. We
2105 * replace it.
2106 */
2107 if (t->flags & SN_CONN_CLOSED) {
2108 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]2109 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2110 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]2111 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
2112 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2113 cur_hdr->len = 0;
2114 } else {
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2115 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
2116 delta = buffer_replace2(req, cur_ptr + val, cur_end,
2117 "close", 5);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2118 cur_next += delta;
2119 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]2120 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2121 }
2122 t->flags |= SN_CONN_CLOSED;
2123 }
2124 }
2125 old_idx = cur_idx;
2126 }
Willy Tarreauf2f0ee82007-03-30 12:02:43 +0200[diff] [blame]2127 }
2128 /* add request headers from the rule sets in the same order */
2129 for (cur_idx = 0; cur_idx < rule_set->nb_reqadd; cur_idx++) {
2130 if (unlikely(http_header_add_tail(req,
2131 &txn->req,
2132 &txn->hdr_idx,
2133 rule_set->req_add[cur_idx])) < 0)
2134 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2135 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2136
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2137 /* check if stats URI was requested, and if an auth is needed */
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]2138 if (rule_set->uri_auth != NULL &&
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]2139 (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)) {
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2140 /* we have to check the URI and auth for this request.
2141 * FIXME!!! that one is rather dangerous, we want to
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2142 * make it follow standard rules (eg: clear req->analysers).
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2143 */
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2144 if (stats_check_uri_auth(t, rule_set))
2145 return 1;
2146 }
2147
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2148 /* now check whether we have some switching rules for this request */
2149 if (!(t->flags & SN_BE_ASSIGNED)) {
2150 struct switching_rule *rule;
2151
2152 list_for_each_entry(rule, &cur_proxy->switching_rules, list) {
2153 int ret;
2154
2155 ret = acl_exec_cond(rule->cond, cur_proxy, t, txn, ACL_DIR_REQ);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2156
2157 ret = acl_pass(ret);
Willy Tarreaua8cfa342008-07-09 11:23:31 +0200[diff] [blame]2158 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2159 ret = !ret;
2160
2161 if (ret) {
2162 t->be = rule->be.backend;
2163 t->be->beconn++;
2164 if (t->be->beconn > t->be->beconn_max)
2165 t->be->beconn_max = t->be->beconn;
2166 t->be->cum_beconn++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]2167
2168 /* assign new parameters to the session from the new backend */
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2169 t->rep->rto = t->req->wto = t->be->timeout.server;
2170 t->req->cto = t->be->timeout.connect;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]2171 t->conn_retries = t->be->conn_retries;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]2172 t->flags |= SN_BE_ASSIGNED;
2173 break;
2174 }
2175 }
2176 }
2177
Willy Tarreau5fdfb912007-01-01 23:11:07 +0100[diff] [blame]2178 if (!(t->flags & SN_BE_ASSIGNED) && cur_proxy->defbe.be) {
2179 /* No backend was set, but there was a default
2180 * backend set in the frontend, so we use it and
2181 * loop again.
2182 */
2183 t->be = cur_proxy->defbe.be;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2184 t->be->beconn++;
2185 if (t->be->beconn > t->be->beconn_max)
2186 t->be->beconn_max = t->be->beconn;
2187 t->be->cum_beconn++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]2188
2189 /* assign new parameters to the session from the new backend */
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2190 t->rep->rto = t->req->wto = t->be->timeout.server;
2191 t->req->cto = t->be->timeout.connect;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]2192 t->conn_retries = t->be->conn_retries;
Willy Tarreau5fdfb912007-01-01 23:11:07 +0100[diff] [blame]2193 t->flags |= SN_BE_ASSIGNED;
2194 }
2195 } while (t->be != cur_proxy); /* we loop only if t->be has changed */
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2196
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2197
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]2198 if (!(t->flags & SN_BE_ASSIGNED)) {
2199 /* To ensure correct connection accounting on
2200 * the backend, we count the connection for the
2201 * one managing the queue.
2202 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2203 t->be->beconn++;
2204 if (t->be->beconn > t->be->beconn_max)
2205 t->be->beconn_max = t->be->beconn;
2206 t->be->cum_beconn++;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]2207 t->flags |= SN_BE_ASSIGNED;
2208 }
2209
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]2210 /*
2211 * Right now, we know that we have processed the entire headers
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2212 * and that unwanted requests have been filtered out. We can do
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]2213 * whatever we want with the remaining request. Also, now we
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]2214 * may have separate values for ->fe, ->be.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2215 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2216
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]2217 /*
2218 * If HTTP PROXY is set we simply get remote server address
2219 * parsing incoming request.
2220 */
2221 if ((t->be->options & PR_O_HTTP_PROXY) && !(t->flags & SN_ADDR_SET)) {
2222 url2sa(req->data + msg->sl.rq.u, msg->sl.rq.u_l, &t->srv_addr);
2223 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2224
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2225 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2226 * 7: the appsession cookie was looked up very early in 1.2,
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2227 * so let's do the same now.
2228 */
2229
2230 /* It needs to look into the URI */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2231 if (t->be->appsession_name) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]2232 get_srv_from_appsession(t, &req->data[msg->som], msg->sl.rq.l);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2233 }
2234
2235
2236 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2237 * 8: Now we can work with the cookies.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2238 * Note that doing so might move headers in the request, but
2239 * the fields will stay coherent and the URI will not move.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2240 * This should only be performed in the backend.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2241 */
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]2242 if ((t->be->cookie_name || t->be->appsession_name || t->be->capture_name)
2243 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2244 manage_client_side_cookies(t, req);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2245
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2246
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2247 /*
Willy Tarreaubb046ac2007-03-03 19:17:03 +0100[diff] [blame]2248 * 9: add X-Forwarded-For if either the frontend or the backend
2249 * asks for it.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2250 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2251 if ((t->fe->options | t->be->options) & PR_O_FWDFOR) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2252 if (t->cli_addr.ss_family == AF_INET) {
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2253 /* Add an X-Forwarded-For header unless the source IP is
2254 * in the 'except' network range.
2255 */
2256 if ((!t->fe->except_mask.s_addr ||
2257 (((struct sockaddr_in *)&t->cli_addr)->sin_addr.s_addr & t->fe->except_mask.s_addr)
2258 != t->fe->except_net.s_addr) &&
2259 (!t->be->except_mask.s_addr ||
2260 (((struct sockaddr_in *)&t->cli_addr)->sin_addr.s_addr & t->be->except_mask.s_addr)
2261 != t->be->except_net.s_addr)) {
2262 int len;
2263 unsigned char *pn;
2264 pn = (unsigned char *)&((struct sockaddr_in *)&t->cli_addr)->sin_addr;
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2265
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2266 /* Note: we rely on the backend to get the header name to be used for
2267 * x-forwarded-for, because the header is really meant for the backends.
2268 * However, if the backend did not specify any option, we have to rely
2269 * on the frontend's header name.
2270 */
2271 if (t->be->fwdfor_hdr_len) {
2272 len = t->be->fwdfor_hdr_len;
2273 memcpy(trash, t->be->fwdfor_hdr_name, len);
2274 } else {
2275 len = t->fe->fwdfor_hdr_len;
2276 memcpy(trash, t->fe->fwdfor_hdr_name, len);
2277 }
2278 len += sprintf(trash + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2279
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2280 if (unlikely(http_header_add_tail2(req, &txn->req,
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2281 &txn->hdr_idx, trash, len)) < 0)
2282 goto return_bad_req;
2283 }
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2284 }
2285 else if (t->cli_addr.ss_family == AF_INET6) {
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2286 /* FIXME: for the sake of completeness, we should also support
2287 * 'except' here, although it is mostly useless in this case.
2288 */
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2289 int len;
2290 char pn[INET6_ADDRSTRLEN];
2291 inet_ntop(AF_INET6,
2292 (const void *)&((struct sockaddr_in6 *)(&t->cli_addr))->sin6_addr,
2293 pn, sizeof(pn));
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]2294
2295 /* Note: we rely on the backend to get the header name to be used for
2296 * x-forwarded-for, because the header is really meant for the backends.
2297 * However, if the backend did not specify any option, we have to rely
2298 * on the frontend's header name.
2299 */
2300 if (t->be->fwdfor_hdr_len) {
2301 len = t->be->fwdfor_hdr_len;
2302 memcpy(trash, t->be->fwdfor_hdr_name, len);
2303 } else {
2304 len = t->fe->fwdfor_hdr_len;
2305 memcpy(trash, t->fe->fwdfor_hdr_name, len);
2306 }
2307 len += sprintf(trash + len, ": %s", pn);
2308
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2309 if (unlikely(http_header_add_tail2(req, &txn->req,
2310 &txn->hdr_idx, trash, len)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2311 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2312 }
2313 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2314
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2315 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2316 * 10: add "Connection: close" if needed and not yet set.
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2317 * Note that we do not need to add it in case of HTTP/1.0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]2318 */
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2319 if (!(t->flags & SN_CONN_CLOSED) &&
Krzysztof Oledzki336d4752007-12-25 02:40:22 +0100[diff] [blame]2320 ((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) {
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2321 if ((unlikely(msg->sl.rq.v_l != 8) ||
2322 unlikely(req->data[msg->som + msg->sl.rq.v + 7] != '0')) &&
2323 unlikely(http_header_add_tail2(req, &txn->req, &txn->hdr_idx,
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2324 "Connection: close", 17)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2325 goto return_bad_req;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2326 t->flags |= SN_CONN_CLOSED;
Willy Tarreaue15d9132006-12-14 22:26:42 +0100[diff] [blame]2327 }
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2328 /* Before we switch to data, was assignment set in manage_client_side_cookie?
2329 * If not assigned, perhaps we are balancing on url_param, but this is a
2330 * POST; and the parameters are in the body, maybe scan there to find our server.
2331 * (unless headers overflowed the buffer?)
2332 */
2333 if (!(t->flags & (SN_ASSIGNED|SN_DIRECT)) &&
2334 t->txn.meth == HTTP_METH_POST && t->be->url_param_name != NULL &&
Willy Tarreaue393fe22008-08-16 22:18:07 +0200[diff] [blame]2335 t->be->url_param_post_limit != 0 && !(req->flags & BF_FULL) &&
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2336 memchr(msg->sol + msg->sl.rq.u, '?', msg->sl.rq.u_l) == NULL) {
2337 /* are there enough bytes here? total == l || r || rlim ?
2338 * len is unsigned, but eoh is int,
2339 * how many bytes of body have we received?
2340 * eoh is the first empty line of the header
2341 */
2342 /* already established CRLF or LF at eoh, move to start of message, find message length in buffer */
Willy Tarreaufb0528b2008-08-11 00:21:56 +0200[diff] [blame]2343 unsigned long len = req->l - (msg->sol[msg->eoh] == '\r' ? msg->eoh + 2 : msg->eoh + 1);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2344
2345 /* If we have HTTP/1.1 and Expect: 100-continue, then abort.
2346 * We can't assume responsibility for the server's decision,
2347 * on this URI and header set. See rfc2616: 14.20, 8.2.3,
2348 * We also can't change our mind later, about which server to choose, so round robin.
2349 */
2350 if ((likely(msg->sl.rq.v_l == 8) && req->data[msg->som + msg->sl.rq.v + 7] == '1')) {
2351 struct hdr_ctx ctx;
2352 ctx.idx = 0;
2353 /* Expect is allowed in 1.1, look for it */
2354 http_find_header2("Expect", 6, msg->sol, &txn->hdr_idx, &ctx);
2355 if (ctx.idx != 0 &&
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2356 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0))
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2357 /* We can't reliablly stall and wait for data, because of
2358 * .NET clients that don't conform to rfc2616; so, no need for
2359 * the next block to check length expectations.
2360 * We could send 100 status back to the client, but then we need to
2361 * re-write headers, and send the message. And this isn't the right
2362 * place for that action.
2363 * TODO: support Expect elsewhere and delete this block.
2364 */
2365 goto end_check_maybe_wait_for_body;
2366 }
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2367
2368 if (likely(len > t->be->url_param_post_limit)) {
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2369 /* nothing to do, we got enough */
2370 } else {
2371 /* limit implies we are supposed to need this many bytes
2372 * to find the parameter. Let's see how many bytes we can wait for.
2373 */
2374 long long hint = len;
2375 struct hdr_ctx ctx;
2376 ctx.idx = 0;
2377 http_find_header2("Transfer-Encoding", 17, msg->sol, &txn->hdr_idx, &ctx);
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2378 if (ctx.idx && ctx.vlen >= 7 && strncasecmp(ctx.line+ctx.val, "chunked", 7) == 0) {
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]2379 buffer_write_dis(req);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2380 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2381 }
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2382 else {
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2383 ctx.idx = 0;
2384 http_find_header2("Content-Length", 14, msg->sol, &txn->hdr_idx, &ctx);
2385 /* now if we have a length, we'll take the hint */
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2386 if (ctx.idx) {
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2387 /* We have Content-Length */
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2388 if (strl2llrc(ctx.line+ctx.val,ctx.vlen, &hint))
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2389 hint = 0; /* parse failure, untrusted client */
2390 else {
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2391 if (hint > 0)
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2392 msg->hdr_content_len = hint;
2393 else
2394 hint = 0; /* bad client, sent negative length */
2395 }
2396 }
2397 /* but limited to what we care about, maybe we don't expect any entity data (hint == 0) */
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2398 if (t->be->url_param_post_limit < hint)
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2399 hint = t->be->url_param_post_limit;
2400 /* now do we really need to buffer more data? */
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2401 if (len < hint) {
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]2402 buffer_write_dis(req);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2403 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2404 }
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]2405 /* else... There are no body bytes to wait for */
2406 }
2407 }
2408 }
2409 end_check_maybe_wait_for_body:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2410
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2411 /*************************************************************
2412 * OK, that's finished for the headers. We have done what we *
2413 * could. Let's switch to the DATA state. *
2414 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2415
Willy Tarreaue393fe22008-08-16 22:18:07 +0200[diff] [blame]2416 buffer_set_rlim(req, BUFSIZE); /* no more rewrite needed */
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]2417 t->logs.tv_request = now;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2418
Willy Tarreau1fa31262007-12-03 00:36:16 +0100[diff] [blame]2419 /* When a connection is tarpitted, we use the tarpit timeout,
2420 * which may be the same as the connect timeout if unspecified.
2421 * If unset, then set it to zero because we really want it to
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2422 * eventually expire. We build the tarpit as an analyser.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2423 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2424 if (txn->flags & TX_CLTARPIT) {
Willy Tarreaue393fe22008-08-16 22:18:07 +0200[diff] [blame]2425 buffer_flush(t->req);
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2426 /* flush the request so that we can drop the connection early
2427 * if the client closes first.
2428 */
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]2429 buffer_write_dis(req);
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2430 req->analysers |= AN_REQ_HTTP_TARPIT;
2431 req->analyse_exp = tick_add_ifset(now_ms, t->be->timeout.tarpit);
2432 if (!req->analyse_exp)
2433 req->analyse_exp = now_ms;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2434 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2435
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2436 /* OK let's go on with the BODY now */
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2437 goto end_of_headers;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2438
2439 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]2440 txn->req.msg_state = HTTP_MSG_ERROR;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2441 txn->status = 400;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2442 req->analysers = 0;
Willy Tarreaudded32d2008-11-30 19:48:07 +0100[diff] [blame]2443 stream_int_retnclose(req->prod, error_message(t, HTTP_ERR_400));
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]2444 t->fe->failed_req++;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2445 return_prx_cond:
2446 if (!(t->flags & SN_ERR_MASK))
2447 t->flags |= SN_ERR_PRXCOND;
2448 if (!(t->flags & SN_FINST_MASK))
2449 t->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2450 return 0;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2451 end_of_headers:
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2452 ; // to keep gcc happy
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2453 }
2454
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2455 if (req->analysers & AN_REQ_HTTP_TARPIT) {
2456 struct http_txn *txn = &t->txn;
2457
2458 /* This connection is being tarpitted. The CLIENT side has
2459 * already set the connect expiration date to the right
2460 * timeout. We just have to check that the client is still
2461 * there and that the timeout has not expired.
2462 */
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]2463 if ((req->flags & (BF_SHUTR|BF_READ_ERROR)) == 0 &&
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2464 !tick_is_expired(req->analyse_exp, now_ms))
2465 return 0;
2466
2467 /* We will set the queue timer to the time spent, just for
2468 * logging purposes. We fake a 500 server error, so that the
2469 * attacker will not suspect his connection has been tarpitted.
2470 * It will not cause trouble to the logs because we can exclude
2471 * the tarpitted connections by filtering on the 'PT' status flags.
2472 */
2473 trace_term(t, TT_HTTP_SRV_2);
2474 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
2475
2476 txn->status = 500;
2477 if (req->flags != BF_READ_ERROR)
Willy Tarreaudded32d2008-11-30 19:48:07 +0100[diff] [blame]2478 stream_int_retnclose(req->prod, error_message(t, HTTP_ERR_500));
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2479
2480 req->analysers = 0;
2481 req->analyse_exp = TICK_ETERNITY;
2482
2483 t->fe->failed_req++;
2484 if (!(t->flags & SN_ERR_MASK))
2485 t->flags |= SN_ERR_PRXCOND;
2486 if (!(t->flags & SN_FINST_MASK))
2487 t->flags |= SN_FINST_T;
2488 return 0;
2489 }
2490
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2491 if (req->analysers & AN_REQ_HTTP_BODY) {
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2492 /* We have to parse the HTTP request body to find any required data.
2493 * "balance url_param check_post" should have been the only way to get
2494 * into this. We were brought here after HTTP header analysis, so all
2495 * related structures are ready.
2496 */
2497 struct http_msg *msg = &t->txn.req;
2498 unsigned long body = msg->sol[msg->eoh] == '\r' ? msg->eoh + 2 : msg->eoh + 1;
2499 long long limit = t->be->url_param_post_limit;
2500 struct hdr_ctx ctx;
2501
2502 ctx.idx = 0;
2503
2504 /* now if we have a length, we'll take the hint */
2505 http_find_header2("Transfer-Encoding", 17, msg->sol, &t->txn.hdr_idx, &ctx);
2506 if (ctx.idx && ctx.vlen >= 7 && strncasecmp(ctx.line+ctx.val, "chunked", 7) == 0) {
2507 unsigned int chunk = 0;
2508 while (body < req->l && !HTTP_IS_CRLF(msg->sol[body])) {
2509 char c = msg->sol[body];
2510 if (ishex(c)) {
2511 unsigned int hex = toupper(c) - '0';
2512 if (hex > 9)
2513 hex -= 'A' - '9' - 1;
2514 chunk = (chunk << 4) | hex;
2515 } else
2516 break;
2517 body++;
2518 }
2519 if (body + 2 >= req->l) /* we want CRLF too */
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2520 goto http_body_end; /* end of buffer? data missing! */
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2521
2522 if (memcmp(msg->sol+body, "\r\n", 2) != 0)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2523 goto http_body_end; /* chunked encoding len ends with CRLF, and we don't have it yet */
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2524
2525 body += 2; // skip CRLF
2526
2527 /* if we support more then one chunk here, we have to do it again when assigning server
2528 * 1. how much entity data do we have? new var
2529 * 2. should save entity_start, entity_cursor, elen & rlen in req; so we don't repeat scanning here
2530 * 3. test if elen > limit, or set new limit to elen if 0 (end of entity found)
2531 */
2532
2533 if (chunk < limit)
2534 limit = chunk; /* only reading one chunk */
2535 } else {
2536 if (msg->hdr_content_len < limit)
2537 limit = msg->hdr_content_len;
2538 }
2539
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2540 http_body_end:
2541 /* we leave once we know we have nothing left to do. This means that we have
2542 * enough bytes, or that we know we'll not get any more (buffer full, read
2543 * buffer closed).
2544 */
2545 if (req->l - body >= limit || /* enough bytes! */
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]2546 req->flags & (BF_FULL | BF_READ_ERROR | BF_SHUTR | BF_READ_TIMEOUT) ||
Willy Tarreauc52164a2008-08-17 19:17:57 +0200[diff] [blame]2547 tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2548 /* The situation will not evolve, so let's give up on the analysis. */
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2549 t->logs.tv_request = now; /* update the request timer to reflect full request */
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2550 req->analysers &= ~AN_REQ_HTTP_BODY;
Willy Tarreauffab5b42008-08-17 18:03:28 +0200[diff] [blame]2551 req->analyse_exp = TICK_ETERNITY;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2552 }
Willy Tarreauc52164a2008-08-17 19:17:57 +0200[diff] [blame]2553 else {
2554 /* Not enough data. We'll re-use the http-request
2555 * timeout here. Ideally, we should set the timeout
2556 * relative to the accept() date. We just set the
2557 * request timeout once at the beginning of the
2558 * request.
2559 */
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]2560 buffer_write_dis(req);
Willy Tarreauc52164a2008-08-17 19:17:57 +0200[diff] [blame]2561 if (!tick_isset(req->analyse_exp))
2562 req->analyse_exp = tick_add_ifset(now_ms, t->fe->timeout.httpreq);
2563 return 0;
2564 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2565 }
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2566
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2567 /* Note: eventhough nobody should set an unknown flag, clearing them right now will
2568 * probably reduce one day's debugging session.
2569 */
2570#ifdef DEBUG_DEV
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2571 if (req->analysers & ~(AN_REQ_INSPECT | AN_REQ_HTTP_HDR | AN_REQ_HTTP_TARPIT | AN_REQ_HTTP_BODY)) {
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2572 fprintf(stderr, "FIXME !!!! unknown analysers flags %s:%d = 0x%08X\n",
2573 __FILE__, __LINE__, req->analysers);
2574 ABORT_NOW();
2575 }
2576#endif
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2577 req->analysers &= AN_REQ_INSPECT | AN_REQ_HTTP_HDR | AN_REQ_HTTP_TARPIT | AN_REQ_HTTP_BODY;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2578 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2579}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2580
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2581/* This function performs all the processing enabled for the current response.
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2582 * It normally returns zero, but may return 1 if it absolutely needs to be
2583 * called again after other functions. It relies on buffers flags, and updates
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2584 * t->rep->analysers. It might make sense to explode it into several other
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2585 * functions. It works like process_request (see indications above).
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2586 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2587int process_response(struct session *t)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2588{
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2589 struct http_txn *txn = &t->txn;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2590 struct buffer *req = t->req;
2591 struct buffer *rep = t->rep;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]2592
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2593 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]2594 now_ms, __FUNCTION__,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]2595 t,
2596 rep,
2597 rep->rex, rep->wex,
2598 rep->flags,
2599 rep->l,
2600 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]2601
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2602 if (rep->analysers & AN_RTR_HTTP_HDR) { /* receiving server headers */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2603 /*
2604 * Now parse the partial (or complete) lines.
2605 * We will check the response syntax, and also join multi-line
2606 * headers. An index of all the lines will be elaborated while
2607 * parsing.
2608 *
2609 * For the parsing, we use a 28 states FSM.
2610 *
2611 * Here is the information we currently have :
Willy Tarreaue393fe22008-08-16 22:18:07 +0200[diff] [blame]2612 * rep->data + rep->som = beginning of response
2613 * rep->data + rep->eoh = end of processed headers / start of current one
2614 * rep->data + rep->eol = end of current header or line (LF or CRLF)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2615 * rep->lr = first non-visited byte
2616 * rep->r = end of data
2617 */
Willy Tarreau7f875f62008-08-11 17:35:01 +0200[diff] [blame]2618
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2619 int cur_idx;
2620 struct http_msg *msg = &txn->rsp;
2621 struct proxy *cur_proxy;
2622
2623 if (likely(rep->lr < rep->r))
2624 http_msg_analyzer(rep, msg, &txn->hdr_idx);
2625
2626 /* 1: we might have to print this header in debug mode */
2627 if (unlikely((global.mode & MODE_DEBUG) &&
2628 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
2629 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
2630 char *eol, *sol;
2631
2632 sol = rep->data + msg->som;
2633 eol = sol + msg->sl.rq.l;
2634 debug_hdr("srvrep", t, sol, eol);
2635
2636 sol += hdr_idx_first_pos(&txn->hdr_idx);
2637 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
2638
2639 while (cur_idx) {
2640 eol = sol + txn->hdr_idx.v[cur_idx].len;
2641 debug_hdr("srvhdr", t, sol, eol);
2642 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2643 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2644 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2645 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2646
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2647 /*
2648 * Now we quickly check if we have found a full valid response.
2649 * If not so, we check the FD and buffer states before leaving.
2650 * A full response is indicated by the fact that we have seen
2651 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
2652 * responses are checked first.
2653 *
2654 * Depending on whether the client is still there or not, we
2655 * may send an error response back or not. Note that normally
2656 * we should only check for HTTP status there, and check I/O
2657 * errors somewhere else.
2658 */
2659
2660 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2661 /* Invalid response */
2662 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
2663 hdr_response_bad:
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2664 //buffer_shutr(rep);
2665 //buffer_shutw(req);
2666 //fd_delete(req->cons->fd);
2667 //req->cons->state = SI_ST_CLO;
2668 buffer_shutr_now(rep);
2669 buffer_shutw_now(req);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2670 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2671 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2672 t->srv->failed_resp++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2673 //sess_change_server(t, NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2674 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2675 t->be->failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2676 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2677 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2678 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2679 if (!(t->flags & SN_ERR_MASK))
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2680 t->flags |= SN_ERR_PRXCOND;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2681 if (!(t->flags & SN_FINST_MASK))
2682 t->flags |= SN_FINST_H;
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]2683
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2684 //if (t->srv && may_dequeue_tasks(t->srv, t->be))
2685 // process_srv_queue(t->srv);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2686
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2687 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2688 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2689 /* too large response does not fit in buffer. */
2690 else if (rep->flags & BF_FULL) {
2691 goto hdr_response_bad;
2692 }
2693 /* read error */
2694 else if (rep->flags & BF_READ_ERROR) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2695 buffer_shutr_now(rep);
2696 buffer_shutw_now(req);
2697 //fd_delete(req->cons->fd);
2698 //req->cons->state = SI_ST_CLO;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2699 //if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2700 //t->srv->cur_sess--;
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2701 //t->srv->failed_resp++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2702 //sess_change_server(t, NULL);
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2703 //}
2704 //t->be->failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2705 rep->analysers = 0;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2706 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2707 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2708 if (!(t->flags & SN_ERR_MASK))
2709 t->flags |= SN_ERR_SRVCL;
2710 if (!(t->flags & SN_FINST_MASK))
2711 t->flags |= SN_FINST_H;
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]2712
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2713 //if (t->srv && may_dequeue_tasks(t->srv, t->be))
2714 // process_srv_queue(t->srv);
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2715
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2716 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2717 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2718 /* read timeout : return a 504 to the client. */
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2719 else if (rep->flags & BF_READ_TIMEOUT) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2720 buffer_shutr_now(rep);
2721 buffer_shutw_now(req);
2722 //fd_delete(req->cons->fd);
2723 //req->cons->state = SI_ST_CLO;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2724 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2725 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2726 t->srv->failed_resp++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2727 //sess_change_server(t, NULL);
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2728 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2729 t->be->failed_resp++;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2730 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2731 txn->status = 504;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2732 stream_int_return(rep->cons, error_message(t, HTTP_ERR_504));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2733 if (!(t->flags & SN_ERR_MASK))
2734 t->flags |= SN_ERR_SRVTO;
2735 if (!(t->flags & SN_FINST_MASK))
2736 t->flags |= SN_FINST_H;
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]2737
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2738 //if (t->srv && may_dequeue_tasks(t->srv, t->be))
2739 // process_srv_queue(t->srv);
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2740 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2741 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2742 /* write error to client, or close from server */
Willy Tarreaue5ed4062008-08-30 03:17:31 +0200[diff] [blame]2743 else if (rep->flags & (BF_WRITE_ERROR|BF_SHUTR)) {
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2744 buffer_shutr_now(rep);
2745 buffer_shutw_now(req);
2746 //fd_delete(req->cons->fd);
2747 //req->cons->state = SI_ST_CLO;
2748 if (t->srv) {
2749 //t->srv->cur_sess--;
2750 t->srv->failed_resp++;
2751 //sess_change_server(t, NULL);
2752 }
2753 t->be->failed_resp++;
2754 rep->analysers = 0;
2755 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2756 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2757 if (!(t->flags & SN_ERR_MASK))
2758 t->flags |= SN_ERR_SRVCL;
2759 if (!(t->flags & SN_FINST_MASK))
2760 t->flags |= SN_FINST_H;
2761
2762 //if (t->srv && may_dequeue_tasks(t->srv, t->be))
2763 // process_srv_queue(t->srv);
Willy Tarreau41f40ed2008-08-21 10:05:00 +0200[diff] [blame]2764
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2765 return 0;
2766 }
Willy Tarreau3da77c52008-08-29 09:58:42 +0200[diff] [blame]2767 buffer_write_dis(rep);
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]2768 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2769 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2770
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2771
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2772 /*****************************************************************
2773 * More interesting part now : we know that we have a complete *
2774 * response which at least looks like HTTP. We have an indicator *
2775 * of each header's length, so we can parse them quickly. *
2776 ****************************************************************/
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2777
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2778 rep->analysers &= ~AN_RTR_HTTP_HDR;
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]2779
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2780 /* ensure we keep this pointer to the beginning of the message */
2781 msg->sol = rep->data + msg->som;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2782
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2783 /*
2784 * 1: get the status code and check for cacheability.
2785 */
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2786
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2787 t->logs.logwait &= ~LW_RESP;
2788 txn->status = strl2ui(rep->data + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2789
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2790 switch (txn->status) {
2791 case 200:
2792 case 203:
2793 case 206:
2794 case 300:
2795 case 301:
2796 case 410:
2797 /* RFC2616 @13.4:
2798 * "A response received with a status code of
2799 * 200, 203, 206, 300, 301 or 410 MAY be stored
2800 * by a cache (...) unless a cache-control
2801 * directive prohibits caching."
2802 *
2803 * RFC2616 @9.5: POST method :
2804 * "Responses to this method are not cacheable,
2805 * unless the response includes appropriate
2806 * Cache-Control or Expires header fields."
2807 */
2808 if (likely(txn->meth != HTTP_METH_POST) &&
2809 (t->be->options & (PR_O_CHK_CACHE|PR_O_COOK_NOC)))
2810 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
2811 break;
2812 default:
2813 break;
2814 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2815
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2816 /*
2817 * 2: we may need to capture headers
2818 */
2819 if (unlikely((t->logs.logwait & LW_RSPHDR) && t->fe->rsp_cap))
2820 capture_headers(rep->data + msg->som, &txn->hdr_idx,
2821 txn->rsp.cap, t->fe->rsp_cap);
2822
2823 /*
2824 * 3: we will have to evaluate the filters.
2825 * As opposed to version 1.2, now they will be evaluated in the
2826 * filters order and not in the header order. This means that
2827 * each filter has to be validated among all headers.
2828 *
2829 * Filters are tried with ->be first, then with ->fe if it is
2830 * different from ->be.
2831 */
2832
2833 t->flags &= ~SN_CONN_CLOSED; /* prepare for inspection */
2834
2835 cur_proxy = t->be;
2836 while (1) {
2837 struct proxy *rule_set = cur_proxy;
2838
2839 /* try headers filters */
2840 if (rule_set->rsp_exp != NULL) {
2841 if (apply_filters_to_response(t, rep, rule_set->rsp_exp) < 0) {
2842 return_bad_resp:
2843 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2844 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2845 t->srv->failed_resp++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2846 //sess_change_server(t, NULL);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2847 }
2848 cur_proxy->failed_resp++;
2849 return_srv_prx_502:
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2850 buffer_shutr_now(rep);
2851 buffer_shutw_now(req);
2852 //fd_delete(req->cons->fd);
2853 //req->cons->state = SI_ST_CLO;
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]2854 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2855 txn->status = 502;
Willy Tarreau81acfab2008-11-30 19:22:53 +0100[diff] [blame]2856 stream_int_return(rep->cons, error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2857 if (!(t->flags & SN_ERR_MASK))
2858 t->flags |= SN_ERR_PRXCOND;
2859 if (!(t->flags & SN_FINST_MASK))
2860 t->flags |= SN_FINST_H;
2861 /* We used to have a free connection slot. Since we'll never use it,
2862 * we have to inform the server that it may be used by another session.
2863 */
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2864 //if (t->srv && may_dequeue_tasks(t->srv, cur_proxy))
2865 // process_srv_queue(t->srv);
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2866 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2867 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2868 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2869
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2870 /* has the response been denied ? */
2871 if (txn->flags & TX_SVDENY) {
Willy Tarreauf899b942008-03-28 18:09:38 +0100[diff] [blame]2872 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2873 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2874 t->srv->failed_secu++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2875 //sess_change_server(t, NULL);
Willy Tarreauf899b942008-03-28 18:09:38 +0100[diff] [blame]2876 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2877 cur_proxy->denied_resp++;
2878 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]2879 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2880
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2881 /* We might have to check for "Connection:" */
2882 if (((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
2883 !(t->flags & SN_CONN_CLOSED)) {
2884 char *cur_ptr, *cur_end, *cur_next;
2885 int cur_idx, old_idx, delta, val;
2886 struct hdr_idx_elem *cur_hdr;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2887
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2888 cur_next = rep->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
2889 old_idx = 0;
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]2890
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2891 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
2892 cur_hdr = &txn->hdr_idx.v[cur_idx];
2893 cur_ptr = cur_next;
2894 cur_end = cur_ptr + cur_hdr->len;
2895 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2896
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2897 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
2898 if (val) {
2899 /* 3 possibilities :
2900 * - we have already set Connection: close,
2901 * so we remove this line.
2902 * - we have not yet set Connection: close,
2903 * but this line indicates close. We leave
2904 * it untouched and set the flag.
2905 * - we have not yet set Connection: close,
2906 * and this line indicates non-close. We
2907 * replace it.
2908 */
2909 if (t->flags & SN_CONN_CLOSED) {
2910 delta = buffer_replace2(rep, cur_ptr, cur_next, NULL, 0);
2911 txn->rsp.eoh += delta;
2912 cur_next += delta;
2913 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
2914 txn->hdr_idx.used--;
2915 cur_hdr->len = 0;
2916 } else {
2917 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
2918 delta = buffer_replace2(rep, cur_ptr + val, cur_end,
2919 "close", 5);
2920 cur_next += delta;
2921 cur_hdr->len += delta;
2922 txn->rsp.eoh += delta;
2923 }
2924 t->flags |= SN_CONN_CLOSED;
2925 }
2926 }
2927 old_idx = cur_idx;
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]2928 }
2929 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2930
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2931 /* add response headers from the rule sets in the same order */
2932 for (cur_idx = 0; cur_idx < rule_set->nb_rspadd; cur_idx++) {
2933 if (unlikely(http_header_add_tail(rep, &txn->rsp, &txn->hdr_idx,
2934 rule_set->rsp_add[cur_idx])) < 0)
2935 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2936 }
2937
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2938 /* check whether we're already working on the frontend */
2939 if (cur_proxy == t->fe)
2940 break;
2941 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2942 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2943
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2944 /*
2945 * 4: check for server cookie.
2946 */
2947 if (t->be->cookie_name || t->be->appsession_name || t->be->capture_name
2948 || (t->be->options & PR_O_CHK_CACHE))
2949 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2950
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2951
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2952 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2953 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2954 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2955 if ((t->be->options & (PR_O_COOK_NOC | PR_O_CHK_CACHE)) != 0)
2956 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2957
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2958 /*
2959 * 6: add server cookie in the response if needed
2960 */
2961 if ((t->srv) && !(t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_INS) &&
2962 (!(t->be->options & PR_O_COOK_POST) || (txn->meth == HTTP_METH_POST))) {
2963 int len;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2964
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2965 /* the server is known, it's not the one the client requested, we have to
2966 * insert a set-cookie here, except if we want to insert only on POST
2967 * requests and this one isn't. Note that servers which don't have cookies
2968 * (eg: some backup servers) will return a full cookie removal request.
2969 */
2970 len = sprintf(trash, "Set-Cookie: %s=%s; path=/",
2971 t->be->cookie_name,
2972 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]2973
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2974 if (t->be->cookie_domain)
2975 len += sprintf(trash+len, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2976
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2977 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
2978 trash, len)) < 0)
2979 goto return_bad_resp;
2980 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2981
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2982 /* Here, we will tell an eventual cache on the client side that we don't
2983 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
2984 * Some caches understand the correct form: 'no-cache="set-cookie"', but
2985 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
2986 */
2987 if ((t->be->options & PR_O_COOK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2988
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2989 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
2990
2991 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
2992 "Cache-control: private", 22)) < 0)
2993 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2994 }
2995 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2996
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2997
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]2998 /*
2999 * 7: check if result will be cacheable with a cookie.
3000 * We'll block the response if security checks have caught
3001 * nasty things such as a cacheable cookie.
3002 */
3003 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) ==
3004 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) &&
3005 (t->be->options & PR_O_CHK_CACHE)) {
3006
3007 /* we're in presence of a cacheable response containing
3008 * a set-cookie header. We'll block it as requested by
3009 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3010 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3011 if (t->srv) {
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3012 //t->srv->cur_sess--;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3013 t->srv->failed_secu++;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]3014 //sess_change_server(t, NULL);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3015 }
3016 t->be->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3017
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3018 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
3019 t->be->id, t->srv?t->srv->id:"<dispatch>");
3020 send_log(t->be, LOG_ALERT,
3021 "Blocking cacheable cookie in response from instance %s, server %s.\n",
3022 t->be->id, t->srv?t->srv->id:"<dispatch>");
3023 goto return_srv_prx_502;
3024 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3025
3026 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3027 * 8: add "Connection: close" if needed and not yet set.
3028 * 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]3029 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3030 if (!(t->flags & SN_CONN_CLOSED) &&
3031 ((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) {
3032 if ((unlikely(msg->sl.st.v_l != 8) ||
3033 unlikely(req->data[msg->som + 7] != '0')) &&
3034 unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3035 "Connection: close", 17)) < 0)
3036 goto return_bad_resp;
3037 t->flags |= SN_CONN_CLOSED;
3038 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3039
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3040 /*************************************************************
3041 * OK, that's finished for the headers. We have done what we *
3042 * could. Let's switch to the DATA state. *
3043 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3044
Willy Tarreaue393fe22008-08-16 22:18:07 +0200[diff] [blame]3045 buffer_set_rlim(rep, BUFSIZE); /* no more rewrite needed */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3046 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3047
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3048#ifdef CONFIG_HAP_TCPSPLICE
3049 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
3050 /* TCP splicing supported by both FE and BE */
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]3051 tcp_splice_splicefd(rep->cons->fd, rep->prod->fd, 0);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3052 }
3053#endif
3054 /* if the user wants to log as soon as possible, without counting
3055 * bytes from the server, then this is the right moment. We have
3056 * to temporarily assign bytes_out to log what we currently have.
3057 */
3058 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
3059 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
3060 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]3061 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3062 t->logs.bytes_out = 0;
3063 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3064
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3065 /* Note: we must not try to cheat by jumping directly to DATA,
3066 * otherwise we would not let the client side wake up.
3067 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3068
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3069 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3070 }
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3071
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]3072 /* Note: eventhough nobody should set an unknown flag, clearing them right now will
3073 * probably reduce one day's debugging session.
3074 */
3075#ifdef DEBUG_DEV
3076 if (rep->analysers & ~(AN_RTR_HTTP_HDR)) {
3077 fprintf(stderr, "FIXME !!!! unknown analysers flags %s:%d = 0x%08X\n",
3078 __FILE__, __LINE__, rep->analysers);
3079 ABORT_NOW();
3080 }
3081#endif
3082 rep->analysers &= AN_RTR_HTTP_HDR;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]3083 return 0;
3084}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3085
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3086/*
3087 * Produces data for the session <s> depending on its source. Expects to be
Willy Tarreau1ae3a052008-08-16 10:56:30 +0200[diff] [blame]3088 * called with client socket shut down on input. Right now, only statistics can
Willy Tarreau72b179a2008-08-28 16:01:32 +0200[diff] [blame]3089 * be produced. It stops by itself by unsetting the BF_HIJACK flag from the
3090 * buffer, which it uses to keep on being called when there is free space in
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3091 * the buffer, or simply by letting an empty buffer upon return. It returns 1
Willy Tarreau1ae3a052008-08-16 10:56:30 +0200[diff] [blame]3092 * when it wants to stop sending data, otherwise 0.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3093 */
3094int produce_content(struct session *s)
3095{
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3096 if (s->data_source == DATA_SRC_NONE) {
Willy Tarreau72b179a2008-08-28 16:01:32 +0200[diff] [blame]3097 buffer_stop_hijack(s->rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3098 return 1;
3099 }
3100 else if (s->data_source == DATA_SRC_STATS) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3101 /* dump server statistics */
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]3102 int ret = stats_dump_http(s, s->be->uri_auth);
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3103 if (ret >= 0)
3104 return ret;
3105 /* -1 indicates an error */
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3106 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3107
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3108 /* unknown data source or internal error */
3109 s->txn.status = 500;
Willy Tarreaudded32d2008-11-30 19:48:07 +0100[diff] [blame]3110 stream_int_retnclose(s->rep->cons, error_message(s, HTTP_ERR_500));
Willy Tarreauf8533202008-08-16 14:55:08 +0200[diff] [blame]3111 trace_term(s, TT_HTTP_CNT_1);
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3112 if (!(s->flags & SN_ERR_MASK))
3113 s->flags |= SN_ERR_PRXCOND;
3114 if (!(s->flags & SN_FINST_MASK))
3115 s->flags |= SN_FINST_R;
Willy Tarreau72b179a2008-08-28 16:01:32 +0200[diff] [blame]3116 buffer_stop_hijack(s->rep);
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3117 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3118}
3119
3120
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3121/* Iterate the same filter through all request headers.
3122 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3123 * Since it can manage the switch to another backend, it updates the per-proxy
3124 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3125 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3126int 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]3127{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3128 char term;
3129 char *cur_ptr, *cur_end, *cur_next;
3130 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3131 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3132 struct hdr_idx_elem *cur_hdr;
3133 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]3134
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3135 last_hdr = 0;
3136
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3137 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3138 old_idx = 0;
3139
3140 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3141 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3142 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3143 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3144 (exp->action == ACT_ALLOW ||
3145 exp->action == ACT_DENY ||
3146 exp->action == ACT_TARPIT))
3147 return 0;
3148
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3149 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3150 if (!cur_idx)
3151 break;
3152
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3153 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3154 cur_ptr = cur_next;
3155 cur_end = cur_ptr + cur_hdr->len;
3156 cur_next = cur_end + cur_hdr->cr + 1;
3157
3158 /* Now we have one header between cur_ptr and cur_end,
3159 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3160 */
3161
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3162 /* The annoying part is that pattern matching needs
3163 * that we modify the contents to null-terminate all
3164 * strings before testing them.
3165 */
3166
3167 term = *cur_end;
3168 *cur_end = '\0';
3169
3170 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3171 switch (exp->action) {
3172 case ACT_SETBE:
3173 /* It is not possible to jump a second time.
3174 * FIXME: should we return an HTTP/500 here so that
3175 * the admin knows there's a problem ?
3176 */
3177 if (t->be != t->fe)
3178 break;
3179
3180 /* Swithing Proxy */
3181 t->be = (struct proxy *) exp->replace;
3182
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3183 /* right now, the backend switch is not overly complicated
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3184 * because we have associated req_cap and rsp_cap to the
3185 * frontend, and the beconn will be updated later.
3186 */
3187
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3188 t->rep->rto = t->req->wto = t->be->timeout.server;
3189 t->req->cto = t->be->timeout.connect;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3190 t->conn_retries = t->be->conn_retries;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3191 last_hdr = 1;
3192 break;
3193
3194 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3195 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3196 last_hdr = 1;
3197 break;
3198
3199 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3200 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3201 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3202 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3203 break;
3204
3205 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3206 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3207 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3208 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3209 break;
3210
3211 case ACT_REPLACE:
3212 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3213 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3214 /* FIXME: if the user adds a newline in the replacement, the
3215 * index will not be recalculated for now, and the new line
3216 * will not be counted as a new header.
3217 */
3218
3219 cur_end += delta;
3220 cur_next += delta;
3221 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3222 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3223 break;
3224
3225 case ACT_REMOVE:
3226 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
3227 cur_next += delta;
3228
3229 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3230 txn->req.eoh += delta;
3231 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3232 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3233 cur_hdr->len = 0;
3234 cur_end = NULL; /* null-term has been rewritten */
3235 break;
3236
3237 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3238 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3239 if (cur_end)
3240 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3241
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3242 /* keep the link from this header to next one in case of later
3243 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3244 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3245 old_idx = cur_idx;
3246 }
3247 return 0;
3248}
3249
3250
3251/* Apply the filter to the request line.
3252 * Returns 0 if nothing has been done, 1 if the filter has been applied,
3253 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3254 * Since it can manage the switch to another backend, it updates the per-proxy
3255 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3256 */
3257int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
3258{
3259 char term;
3260 char *cur_ptr, *cur_end;
3261 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3262 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3263 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3264
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3265
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3266 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3267 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3268 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3269 (exp->action == ACT_ALLOW ||
3270 exp->action == ACT_DENY ||
3271 exp->action == ACT_TARPIT))
3272 return 0;
3273 else if (exp->action == ACT_REMOVE)
3274 return 0;
3275
3276 done = 0;
3277
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3278 cur_ptr = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3279 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3280
3281 /* Now we have the request line between cur_ptr and cur_end */
3282
3283 /* The annoying part is that pattern matching needs
3284 * that we modify the contents to null-terminate all
3285 * strings before testing them.
3286 */
3287
3288 term = *cur_end;
3289 *cur_end = '\0';
3290
3291 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3292 switch (exp->action) {
3293 case ACT_SETBE:
3294 /* It is not possible to jump a second time.
3295 * FIXME: should we return an HTTP/500 here so that
3296 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3297 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3298 if (t->be != t->fe)
3299 break;
3300
3301 /* Swithing Proxy */
3302 t->be = (struct proxy *) exp->replace;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3303
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3304 /* right now, the backend switch is not too much complicated
3305 * because we have associated req_cap and rsp_cap to the
3306 * frontend, and the beconn will be updated later.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3307 */
3308
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3309 t->rep->rto = t->req->wto = t->be->timeout.server;
3310 t->req->cto = t->be->timeout.connect;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3311 t->conn_retries = t->be->conn_retries;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3312 done = 1;
3313 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3314
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3315 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3316 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3317 done = 1;
3318 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3319
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3320 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3321 txn->flags |= TX_CLDENY;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3322 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3323 done = 1;
3324 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3325
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3326 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3327 txn->flags |= TX_CLTARPIT;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3328 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3329 done = 1;
3330 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3331
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3332 case ACT_REPLACE:
3333 *cur_end = term; /* restore the string terminator */
3334 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3335 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3336 /* FIXME: if the user adds a newline in the replacement, the
3337 * index will not be recalculated for now, and the new line
3338 * will not be counted as a new header.
3339 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3340
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3341 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3342 cur_end += delta;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3343
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3344 txn->req.sol = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3345 cur_end = (char *)http_parse_reqline(&txn->req, req->data,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3346 HTTP_MSG_RQMETH,
3347 cur_ptr, cur_end + 1,
3348 NULL, NULL);
3349 if (unlikely(!cur_end))
3350 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3351
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3352 /* we have a full request and we know that we have either a CR
3353 * or an LF at <ptr>.
3354 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3355 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
3356 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]3357 /* there is no point trying this regex on headers */
3358 return 1;
3359 }
3360 }
3361 *cur_end = term; /* restore the string terminator */
3362 return done;
3363}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]3364
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3365
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3366
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3367/*
3368 * Apply all the req filters <exp> to all headers in buffer <req> of session <t>.
3369 * 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]3370 * unparsable request. Since it can manage the switch to another backend, it
3371 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3372 */
3373int apply_filters_to_request(struct session *t, struct buffer *req, struct hdr_exp *exp)
3374{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3375 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3376 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3377 while (exp && !(txn->flags & (TX_CLDENY|TX_CLTARPIT))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3378 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3379
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3380 /*
3381 * The interleaving of transformations and verdicts
3382 * makes it difficult to decide to continue or stop
3383 * the evaluation.
3384 */
3385
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3386 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3387 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
3388 exp->action == ACT_TARPIT || exp->action == ACT_PASS)) {
3389 exp = exp->next;
3390 continue;
3391 }
3392
3393 /* Apply the filter to the request line. */
3394 ret = apply_filter_to_req_line(t, req, exp);
3395 if (unlikely(ret < 0))
3396 return -1;
3397
3398 if (likely(ret == 0)) {
3399 /* The filter did not match the request, it can be
3400 * iterated through all headers.
3401 */
3402 apply_filter_to_req_headers(t, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3403 }
3404 exp = exp->next;
3405 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3406 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3407}
3408
3409
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3410
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3411/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3412 * Manage client-side cookie. It can impact performance by about 2% so it is
3413 * desirable to call it only when needed.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3414 */
3415void manage_client_side_cookies(struct session *t, struct buffer *req)
3416{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3417 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3418 char *p1, *p2, *p3, *p4;
3419 char *del_colon, *del_cookie, *colon;
3420 int app_cookies;
3421
3422 appsess *asession_temp = NULL;
3423 appsess local_asession;
3424
3425 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3426 int cur_idx, old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3427
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3428 /* Iterate through the headers.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3429 * we start with the start line.
3430 */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]3431 old_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3432 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3433
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3434 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3435 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3436 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3437
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3438 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3439 cur_ptr = cur_next;
3440 cur_end = cur_ptr + cur_hdr->len;
3441 cur_next = cur_end + cur_hdr->cr + 1;
3442
3443 /* We have one full header between cur_ptr and cur_end, and the
3444 * next header starts at cur_next. We're only interested in
3445 * "Cookie:" headers.
3446 */
3447
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3448 val = http_header_match2(cur_ptr, cur_end, "Cookie", 6);
3449 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3450 old_idx = cur_idx;
3451 continue;
3452 }
3453
3454 /* Now look for cookies. Conforming to RFC2109, we have to support
3455 * attributes whose name begin with a '$', and associate them with
3456 * the right cookie, if we want to delete this cookie.
3457 * So there are 3 cases for each cookie read :
3458 * 1) it's a special attribute, beginning with a '$' : ignore it.
3459 * 2) it's a server id cookie that we *MAY* want to delete : save
3460 * some pointers on it (last semi-colon, beginning of cookie...)
3461 * 3) it's an application cookie : we *MAY* have to delete a previous
3462 * "special" cookie.
3463 * At the end of loop, if a "special" cookie remains, we may have to
3464 * remove it. If no application cookie persists in the header, we
3465 * *MUST* delete it
3466 */
3467
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3468 colon = p1 = cur_ptr + val; /* first non-space char after 'Cookie:' */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3469
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3470 /* del_cookie == NULL => nothing to be deleted */
3471 del_colon = del_cookie = NULL;
3472 app_cookies = 0;
3473
3474 while (p1 < cur_end) {
3475 /* skip spaces and colons, but keep an eye on these ones */
3476 while (p1 < cur_end) {
3477 if (*p1 == ';' || *p1 == ',')
3478 colon = p1;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3479 else if (!isspace((unsigned char)*p1))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3480 break;
3481 p1++;
3482 }
3483
3484 if (p1 == cur_end)
3485 break;
3486
3487 /* p1 is at the beginning of the cookie name */
3488 p2 = p1;
3489 while (p2 < cur_end && *p2 != '=')
3490 p2++;
3491
3492 if (p2 == cur_end)
3493 break;
3494
3495 p3 = p2 + 1; /* skips the '=' sign */
3496 if (p3 == cur_end)
3497 break;
3498
3499 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3500 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';' && *p4 != ',')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3501 p4++;
3502
3503 /* here, we have the cookie name between p1 and p2,
3504 * and its value between p3 and p4.
3505 * we can process it :
3506 *
3507 * Cookie: NAME=VALUE;
3508 * | || || |
3509 * | || || +--> p4
3510 * | || |+-------> p3
3511 * | || +--------> p2
3512 * | |+------------> p1
3513 * | +-------------> colon
3514 * +--------------------> cur_ptr
3515 */
3516
3517 if (*p1 == '$') {
3518 /* skip this one */
3519 }
3520 else {
3521 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3522 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3523 txn->cli_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3524 (p4 - p1 >= t->fe->capture_namelen) &&
3525 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3526 int log_len = p4 - p1;
3527
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]3528 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3529 Alert("HTTP logging : out of memory.\n");
3530 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3531 if (log_len > t->fe->capture_len)
3532 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3533 memcpy(txn->cli_cookie, p1, log_len);
3534 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3535 }
3536 }
3537
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3538 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
3539 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3540 /* Cool... it's the right one */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3541 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3542 char *delim;
3543
3544 /* if we're in cookie prefix mode, we'll search the delimitor so that we
3545 * have the server ID betweek p3 and delim, and the original cookie between
3546 * delim+1 and p4. Otherwise, delim==p4 :
3547 *
3548 * Cookie: NAME=SRV~VALUE;
3549 * | || || | |
3550 * | || || | +--> p4
3551 * | || || +--------> delim
3552 * | || |+-----------> p3
3553 * | || +------------> p2
3554 * | |+----------------> p1
3555 * | +-----------------> colon
3556 * +------------------------> cur_ptr
3557 */
3558
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3559 if (t->be->options & PR_O_COOK_PFX) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3560 for (delim = p3; delim < p4; delim++)
3561 if (*delim == COOKIE_DELIM)
3562 break;
3563 }
3564 else
3565 delim = p4;
3566
3567
3568 /* Here, we'll look for the first running server which supports the cookie.
3569 * This allows to share a same cookie between several servers, for example
3570 * to dedicate backup servers to specific servers only.
3571 * However, to prevent clients from sticking to cookie-less backup server
3572 * when they have incidentely learned an empty cookie, we simply ignore
3573 * empty cookies and mark them as invalid.
3574 */
3575 if (delim == p3)
3576 srv = NULL;
3577
3578 while (srv) {
Willy Tarreau92f2ab12007-02-02 22:14:47 +0100[diff] [blame]3579 if (srv->cookie && (srv->cklen == delim - p3) &&
3580 !memcmp(p3, srv->cookie, delim - p3)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3581 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3582 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3583 txn->flags &= ~TX_CK_MASK;
3584 txn->flags |= TX_CK_VALID;
3585 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3586 t->srv = srv;
3587 break;
3588 } else {
3589 /* we found a server, but it's down */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3590 txn->flags &= ~TX_CK_MASK;
3591 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3592 }
3593 }
3594 srv = srv->next;
3595 }
3596
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3597 if (!srv && !(txn->flags & TX_CK_DOWN)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3598 /* no server matched this cookie */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3599 txn->flags &= ~TX_CK_MASK;
3600 txn->flags |= TX_CK_INVALID;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3601 }
3602
3603 /* depending on the cookie mode, we may have to either :
3604 * - delete the complete cookie if we're in insert+indirect mode, so that
3605 * the server never sees it ;
3606 * - remove the server id from the cookie value, and tag the cookie as an
3607 * application cookie so that it does not get accidentely removed later,
3608 * if we're in cookie prefix mode
3609 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3610 if ((t->be->options & PR_O_COOK_PFX) && (delim != p4)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3611 int delta; /* negative */
3612
3613 delta = buffer_replace2(req, p3, delim + 1, NULL, 0);
3614 p4 += delta;
3615 cur_end += delta;
3616 cur_next += delta;
3617 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3618 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3619
3620 del_cookie = del_colon = NULL;
3621 app_cookies++; /* protect the header from deletion */
3622 }
3623 else if (del_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3624 (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]3625 del_cookie = p1;
3626 del_colon = colon;
3627 }
3628 } else {
3629 /* now we know that we must keep this cookie since it's
3630 * not ours. But if we wanted to delete our cookie
3631 * earlier, we cannot remove the complete header, but we
3632 * can remove the previous block itself.
3633 */
3634 app_cookies++;
3635
3636 if (del_cookie != NULL) {
3637 int delta; /* negative */
3638
3639 delta = buffer_replace2(req, del_cookie, p1, NULL, 0);
3640 p4 += delta;
3641 cur_end += delta;
3642 cur_next += delta;
3643 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3644 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3645 del_cookie = del_colon = NULL;
3646 }
3647 }
3648
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3649 if ((t->be->appsession_name != NULL) &&
3650 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3651 /* first, let's see if the cookie is our appcookie*/
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3652
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3653 /* Cool... it's the right one */
3654
3655 asession_temp = &local_asession;
3656
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3657 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3658 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
3659 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
3660 return;
3661 }
3662
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3663 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
3664 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3665 asession_temp->serverid = NULL;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3666
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3667 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3668 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
3669 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3670 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3671 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3672 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3673 Alert("Not enough memory process_cli():asession:calloc().\n");
3674 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
3675 return;
3676 }
3677
3678 asession_temp->sessid = local_asession.sessid;
3679 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3680 asession_temp->request_count = 0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3681 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3682 } else {
3683 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3684 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3685 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3686 if (asession_temp->serverid == NULL) {
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3687 /* TODO redispatch request */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3688 Alert("Found Application Session without matching server.\n");
3689 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3690 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3691 while (srv) {
3692 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3693 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3694 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3695 txn->flags &= ~TX_CK_MASK;
3696 txn->flags |= TX_CK_VALID;
3697 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3698 t->srv = srv;
3699 break;
3700 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3701 txn->flags &= ~TX_CK_MASK;
3702 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3703 }
3704 }
3705 srv = srv->next;
3706 }/* end while(srv) */
3707 }/* end else if server == NULL */
3708
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]3709 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]3710 asession_temp->request_count++;
3711#if defined(DEBUG_HASH)
3712 Alert("manage_client_side_cookies\n");
3713 appsession_hash_dump(&(t->be->htbl_proxy));
3714#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3715 }/* end if ((t->proxy->appsession_name != NULL) ... */
3716 }
3717
3718 /* we'll have to look for another cookie ... */
3719 p1 = p4;
3720 } /* while (p1 < cur_end) */
3721
3722 /* There's no more cookie on this line.
3723 * We may have marked the last one(s) for deletion.
3724 * We must do this now in two ways :
3725 * - if there is no app cookie, we simply delete the header ;
3726 * - if there are app cookies, we must delete the end of the
3727 * string properly, including the colon/semi-colon before
3728 * the cookie name.
3729 */
3730 if (del_cookie != NULL) {
3731 int delta;
3732 if (app_cookies) {
3733 delta = buffer_replace2(req, del_colon, cur_end, NULL, 0);
3734 cur_end = del_colon;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3735 cur_hdr->len += delta;
3736 } else {
3737 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3738
3739 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3740 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3741 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3742 cur_hdr->len = 0;
3743 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]3744 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3745 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3746 }
3747
3748 /* keep the link from this header to next one */
3749 old_idx = cur_idx;
3750 } /* end of cookie processing on this header */
3751}
3752
3753
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3754/* Iterate the same filter through all response headers contained in <rtr>.
3755 * Returns 1 if this filter can be stopped upon return, otherwise 0.
3756 */
3757int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
3758{
3759 char term;
3760 char *cur_ptr, *cur_end, *cur_next;
3761 int cur_idx, old_idx, last_hdr;
3762 struct http_txn *txn = &t->txn;
3763 struct hdr_idx_elem *cur_hdr;
3764 int len, delta;
3765
3766 last_hdr = 0;
3767
3768 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
3769 old_idx = 0;
3770
3771 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3772 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3773 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3774 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3775 (exp->action == ACT_ALLOW ||
3776 exp->action == ACT_DENY))
3777 return 0;
3778
3779 cur_idx = txn->hdr_idx.v[old_idx].next;
3780 if (!cur_idx)
3781 break;
3782
3783 cur_hdr = &txn->hdr_idx.v[cur_idx];
3784 cur_ptr = cur_next;
3785 cur_end = cur_ptr + cur_hdr->len;
3786 cur_next = cur_end + cur_hdr->cr + 1;
3787
3788 /* Now we have one header between cur_ptr and cur_end,
3789 * and the next header starts at cur_next.
3790 */
3791
3792 /* The annoying part is that pattern matching needs
3793 * that we modify the contents to null-terminate all
3794 * strings before testing them.
3795 */
3796
3797 term = *cur_end;
3798 *cur_end = '\0';
3799
3800 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3801 switch (exp->action) {
3802 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3803 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3804 last_hdr = 1;
3805 break;
3806
3807 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3808 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3809 last_hdr = 1;
3810 break;
3811
3812 case ACT_REPLACE:
3813 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3814 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
3815 /* FIXME: if the user adds a newline in the replacement, the
3816 * index will not be recalculated for now, and the new line
3817 * will not be counted as a new header.
3818 */
3819
3820 cur_end += delta;
3821 cur_next += delta;
3822 cur_hdr->len += delta;
3823 txn->rsp.eoh += delta;
3824 break;
3825
3826 case ACT_REMOVE:
3827 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
3828 cur_next += delta;
3829
3830 /* FIXME: this should be a separate function */
3831 txn->rsp.eoh += delta;
3832 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3833 txn->hdr_idx.used--;
3834 cur_hdr->len = 0;
3835 cur_end = NULL; /* null-term has been rewritten */
3836 break;
3837
3838 }
3839 }
3840 if (cur_end)
3841 *cur_end = term; /* restore the string terminator */
3842
3843 /* keep the link from this header to next one in case of later
3844 * removal of next header.
3845 */
3846 old_idx = cur_idx;
3847 }
3848 return 0;
3849}
3850
3851
3852/* Apply the filter to the status line in the response buffer <rtr>.
3853 * Returns 0 if nothing has been done, 1 if the filter has been applied,
3854 * or -1 if a replacement resulted in an invalid status line.
3855 */
3856int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
3857{
3858 char term;
3859 char *cur_ptr, *cur_end;
3860 int done;
3861 struct http_txn *txn = &t->txn;
3862 int len, delta;
3863
3864
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3865 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3866 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3867 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3868 (exp->action == ACT_ALLOW ||
3869 exp->action == ACT_DENY))
3870 return 0;
3871 else if (exp->action == ACT_REMOVE)
3872 return 0;
3873
3874 done = 0;
3875
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3876 cur_ptr = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3877 cur_end = cur_ptr + txn->rsp.sl.rq.l;
3878
3879 /* Now we have the status line between cur_ptr and cur_end */
3880
3881 /* The annoying part is that pattern matching needs
3882 * that we modify the contents to null-terminate all
3883 * strings before testing them.
3884 */
3885
3886 term = *cur_end;
3887 *cur_end = '\0';
3888
3889 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3890 switch (exp->action) {
3891 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3892 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3893 done = 1;
3894 break;
3895
3896 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3897 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3898 done = 1;
3899 break;
3900
3901 case ACT_REPLACE:
3902 *cur_end = term; /* restore the string terminator */
3903 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3904 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
3905 /* FIXME: if the user adds a newline in the replacement, the
3906 * index will not be recalculated for now, and the new line
3907 * will not be counted as a new header.
3908 */
3909
3910 txn->rsp.eoh += delta;
3911 cur_end += delta;
3912
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3913 txn->rsp.sol = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3914 cur_end = (char *)http_parse_stsline(&txn->rsp, rtr->data,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]3915 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3916 cur_ptr, cur_end + 1,
3917 NULL, NULL);
3918 if (unlikely(!cur_end))
3919 return -1;
3920
3921 /* we have a full respnse and we know that we have either a CR
3922 * or an LF at <ptr>.
3923 */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3924 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]3925 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.rq.l, *cur_end == '\r');
3926 /* there is no point trying this regex on headers */
3927 return 1;
3928 }
3929 }
3930 *cur_end = term; /* restore the string terminator */
3931 return done;
3932}
3933
3934
3935
3936/*
3937 * Apply all the resp filters <exp> to all headers in buffer <rtr> of session <t>.
3938 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
3939 * unparsable response.
3940 */
3941int apply_filters_to_response(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
3942{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3943 struct http_txn *txn = &t->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3944 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3945 while (exp && !(txn->flags & TX_SVDENY)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3946 int ret;
3947
3948 /*
3949 * The interleaving of transformations and verdicts
3950 * makes it difficult to decide to continue or stop
3951 * the evaluation.
3952 */
3953
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3954 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3955 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
3956 exp->action == ACT_PASS)) {
3957 exp = exp->next;
3958 continue;
3959 }
3960
3961 /* Apply the filter to the status line. */
3962 ret = apply_filter_to_sts_line(t, rtr, exp);
3963 if (unlikely(ret < 0))
3964 return -1;
3965
3966 if (likely(ret == 0)) {
3967 /* The filter did not match the response, it can be
3968 * iterated through all headers.
3969 */
3970 apply_filter_to_resp_headers(t, rtr, exp);
3971 }
3972 exp = exp->next;
3973 }
3974 return 0;
3975}
3976
3977
3978
3979/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3980 * Manage server-side cookies. It can impact performance by about 2% so it is
3981 * desirable to call it only when needed.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3982 */
3983void manage_server_side_cookies(struct session *t, struct buffer *rtr)
3984{
3985 struct http_txn *txn = &t->txn;
3986 char *p1, *p2, *p3, *p4;
3987
3988 appsess *asession_temp = NULL;
3989 appsess local_asession;
3990
3991 char *cur_ptr, *cur_end, *cur_next;
3992 int cur_idx, old_idx, delta;
3993
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3994 /* Iterate through the headers.
3995 * we start with the start line.
3996 */
3997 old_idx = 0;
3998 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
3999
4000 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
4001 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4002 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4003
4004 cur_hdr = &txn->hdr_idx.v[cur_idx];
4005 cur_ptr = cur_next;
4006 cur_end = cur_ptr + cur_hdr->len;
4007 cur_next = cur_end + cur_hdr->cr + 1;
4008
4009 /* We have one full header between cur_ptr and cur_end, and the
4010 * next header starts at cur_next. We're only interested in
4011 * "Cookie:" headers.
4012 */
4013
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4014 val = http_header_match2(cur_ptr, cur_end, "Set-Cookie", 10);
4015 if (!val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4016 old_idx = cur_idx;
4017 continue;
4018 }
4019
4020 /* OK, right now we know we have a set-cookie at cur_ptr */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4021 txn->flags |= TX_SCK_ANY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4022
4023
4024 /* maybe we only wanted to see if there was a set-cookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4025 if (t->be->cookie_name == NULL &&
4026 t->be->appsession_name == NULL &&
4027 t->be->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4028 return;
4029
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4030 p1 = cur_ptr + val; /* first non-space char after 'Set-Cookie:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4031
4032 while (p1 < cur_end) { /* in fact, we'll break after the first cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4033 if (p1 == cur_end || *p1 == ';') /* end of cookie */
4034 break;
4035
4036 /* p1 is at the beginning of the cookie name */
4037 p2 = p1;
4038
4039 while (p2 < cur_end && *p2 != '=' && *p2 != ';')
4040 p2++;
4041
4042 if (p2 == cur_end || *p2 == ';') /* next cookie */
4043 break;
4044
4045 p3 = p2 + 1; /* skip the '=' sign */
4046 if (p3 == cur_end)
4047 break;
4048
4049 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4050 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';')
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4051 p4++;
4052
4053 /* here, we have the cookie name between p1 and p2,
4054 * and its value between p3 and p4.
4055 * we can process it.
4056 */
4057
4058 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4059 if (t->be->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4060 txn->srv_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4061 (p4 - p1 >= t->be->capture_namelen) &&
4062 memcmp(p1, t->be->capture_name, t->be->capture_namelen) == 0) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4063 int log_len = p4 - p1;
4064
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]4065 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4066 Alert("HTTP logging : out of memory.\n");
4067 }
4068
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4069 if (log_len > t->be->capture_len)
4070 log_len = t->be->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4071 memcpy(txn->srv_cookie, p1, log_len);
4072 txn->srv_cookie[log_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4073 }
4074
4075 /* now check if we need to process it for persistence */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4076 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4077 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4078 /* Cool... it's the right one */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4079 txn->flags |= TX_SCK_SEEN;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4080
4081 /* If the cookie is in insert mode on a known server, we'll delete
4082 * this occurrence because we'll insert another one later.
4083 * We'll delete it too if the "indirect" option is set and we're in
4084 * a direct access. */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4085 if (((t->srv) && (t->be->options & PR_O_COOK_INS)) ||
4086 ((t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_IND))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4087 /* this header must be deleted */
4088 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4089 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4090 txn->hdr_idx.used--;
4091 cur_hdr->len = 0;
4092 cur_next += delta;
4093 txn->rsp.eoh += delta;
4094
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4095 txn->flags |= TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4096 }
4097 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4098 (t->be->options & PR_O_COOK_RW)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4099 /* replace bytes p3->p4 with the cookie name associated
4100 * with this server since we know it.
4101 */
4102 delta = buffer_replace2(rtr, p3, p4, t->srv->cookie, t->srv->cklen);
4103 cur_hdr->len += delta;
4104 cur_next += delta;
4105 txn->rsp.eoh += delta;
4106
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4107 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4108 }
4109 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4110 (t->be->options & PR_O_COOK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4111 /* insert the cookie name associated with this server
4112 * before existing cookie, and insert a delimitor between them..
4113 */
4114 delta = buffer_replace2(rtr, p3, p3, t->srv->cookie, t->srv->cklen + 1);
4115 cur_hdr->len += delta;
4116 cur_next += delta;
4117 txn->rsp.eoh += delta;
4118
4119 p3[t->srv->cklen] = COOKIE_DELIM;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4120 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4121 }
4122 }
4123 /* next, let's see if the cookie is our appcookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4124 else if ((t->be->appsession_name != NULL) &&
4125 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4126
4127 /* Cool... it's the right one */
4128
4129 size_t server_id_len = strlen(t->srv->id) + 1;
4130 asession_temp = &local_asession;
4131
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4132 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4133 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4134 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4135 return;
4136 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4137 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4138 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4139 asession_temp->serverid = NULL;
4140
4141 /* only do insert, if lookup fails */
Ryan Warnick6d0b1fa2008-02-17 11:24:35 +0100[diff] [blame]4142 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
4143 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4144 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4145 Alert("Not enough Memory process_srv():asession:calloc().\n");
4146 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
4147 return;
4148 }
4149 asession_temp->sessid = local_asession.sessid;
4150 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4151 asession_temp->request_count = 0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4152 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
4153 } else {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4154 /* free wasted memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4155 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4156 }
4157
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4158 if (asession_temp->serverid == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4159 if ((asession_temp->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4160 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4161 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4162 return;
4163 }
4164 asession_temp->serverid[0] = '\0';
4165 }
4166
4167 if (asession_temp->serverid[0] == '\0')
4168 memcpy(asession_temp->serverid, t->srv->id, server_id_len);
4169
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]4170 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4171 asession_temp->request_count++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4172#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4173 Alert("manage_server_side_cookies\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4174 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4175#endif
4176 }/* end if ((t->proxy->appsession_name != NULL) ... */
4177 break; /* we don't want to loop again since there cannot be another cookie on the same line */
4178 } /* we're now at the end of the cookie value */
4179
4180 /* keep the link from this header to next one */
4181 old_idx = cur_idx;
4182 } /* end of cookie processing on this header */
4183}
4184
4185
4186
4187/*
4188 * Check if response is cacheable or not. Updates t->flags.
4189 */
4190void check_response_for_cacheability(struct session *t, struct buffer *rtr)
4191{
4192 struct http_txn *txn = &t->txn;
4193 char *p1, *p2;
4194
4195 char *cur_ptr, *cur_end, *cur_next;
4196 int cur_idx;
4197
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]4198 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4199 return;
4200
4201 /* Iterate through the headers.
4202 * we start with the start line.
4203 */
4204 cur_idx = 0;
4205 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4206
4207 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4208 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4209 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4210
4211 cur_hdr = &txn->hdr_idx.v[cur_idx];
4212 cur_ptr = cur_next;
4213 cur_end = cur_ptr + cur_hdr->len;
4214 cur_next = cur_end + cur_hdr->cr + 1;
4215
4216 /* We have one full header between cur_ptr and cur_end, and the
4217 * next header starts at cur_next. We're only interested in
4218 * "Cookie:" headers.
4219 */
4220
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4221 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
4222 if (val) {
4223 if ((cur_end - (cur_ptr + val) >= 8) &&
4224 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
4225 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
4226 return;
4227 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4228 }
4229
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4230 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
4231 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4232 continue;
4233
4234 /* OK, right now we know we have a cache-control header at cur_ptr */
4235
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4236 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4237
4238 if (p1 >= cur_end) /* no more info */
4239 continue;
4240
4241 /* p1 is at the beginning of the value */
4242 p2 = p1;
4243
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4244 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4245 p2++;
4246
4247 /* we have a complete value between p1 and p2 */
4248 if (p2 < cur_end && *p2 == '=') {
4249 /* we have something of the form no-cache="set-cookie" */
4250 if ((cur_end - p1 >= 21) &&
4251 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
4252 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4253 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4254 continue;
4255 }
4256
4257 /* OK, so we know that either p2 points to the end of string or to a comma */
4258 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
4259 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
4260 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
4261 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4262 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4263 return;
4264 }
4265
4266 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4267 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4268 continue;
4269 }
4270 }
4271}
4272
4273
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4274/*
4275 * Try to retrieve a known appsession in the URI, then the associated server.
4276 * If the server is found, it's assigned to the session.
4277 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4278void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4279{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4280 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4281 appsess *asession_temp = NULL;
4282 appsess local_asession;
4283 char *request_line;
4284
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4285 if (t->be->appsession_name == NULL ||
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]4286 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST) ||
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4287 (request_line = memchr(begin, ';', len)) == NULL ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4288 ((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]4289 return;
4290
4291 /* skip ';' */
4292 request_line++;
4293
4294 /* look if we have a jsessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4295 if (strncasecmp(request_line, t->be->appsession_name, t->be->appsession_name_len) != 0)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4296 return;
4297
4298 /* skip jsessionid= */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4299 request_line += t->be->appsession_name_len + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4300
4301 /* First try if we already have an appsession */
4302 asession_temp = &local_asession;
4303
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4304 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4305 Alert("Not enough memory process_cli():asession_temp->sessid:calloc().\n");
4306 send_log(t->be, LOG_ALERT, "Not enough Memory process_cli():asession_temp->sessid:calloc().\n");
4307 return;
4308 }
4309
4310 /* Copy the sessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4311 memcpy(asession_temp->sessid, request_line, t->be->appsession_len);
4312 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4313 asession_temp->serverid = NULL;
4314
4315 /* only do insert, if lookup fails */
Ryan Warnick6d0b1fa2008-02-17 11:24:35 +0100[diff] [blame]4316 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
4317 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4318 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4319 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4320 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4321 Alert("Not enough memory process_cli():asession:calloc().\n");
4322 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4323 return;
4324 }
4325 asession_temp->sessid = local_asession.sessid;
4326 asession_temp->serverid = local_asession.serverid;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4327 asession_temp->request_count=0;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4328 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4329 }
4330 else {
4331 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4332 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4333 }
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4334
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]4335 asession_temp->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4336 asession_temp->request_count++;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4337
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4338#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4339 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4340 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4341#endif
4342 if (asession_temp->serverid == NULL) {
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]4343 /* TODO redispatch request */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4344 Alert("Found Application Session without matching server.\n");
4345 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4346 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4347 while (srv) {
4348 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4349 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4350 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4351 txn->flags &= ~TX_CK_MASK;
4352 txn->flags |= TX_CK_VALID;
4353 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4354 t->srv = srv;
4355 break;
4356 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4357 txn->flags &= ~TX_CK_MASK;
4358 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4359 }
4360 }
4361 srv = srv->next;
4362 }
4363 }
4364}
4365
4366
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4367/*
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4368 * In a GET or HEAD request, check if the requested URI matches the stats uri
4369 * for the current backend, and if an authorization has been passed and is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4370 *
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4371 * 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]4372 * t->be->uri_auth field is valid. An HTTP/401 response may be sent, or
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4373 * produce_content() can be called to start sending data.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4374 *
4375 * Returns 1 if the session's state changes, otherwise 0.
4376 */
4377int stats_check_uri_auth(struct session *t, struct proxy *backend)
4378{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4379 struct http_txn *txn = &t->txn;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4380 struct uri_auth *uri_auth = backend->uri_auth;
4381 struct user_auth *user;
4382 int authenticated, cur_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4383 char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4384
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4385 memset(&t->data_ctx.stats, 0, sizeof(t->data_ctx.stats));
4386
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4387 /* check URI size */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4388 if (uri_auth->uri_len > txn->req.sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4389 return 0;
4390
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4391 h = t->req->data + txn->req.sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4392
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4393 /* the URI is in h */
4394 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4395 return 0;
4396
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4397 h += uri_auth->uri_len;
4398 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 3) {
4399 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4400 t->data_ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4401 break;
4402 }
4403 h++;
4404 }
4405
4406 if (uri_auth->refresh) {
4407 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4408 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 10) {
4409 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4410 t->data_ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4411 break;
4412 }
4413 h++;
4414 }
4415 }
4416
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]4417 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4418 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 4) {
4419 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4420 t->data_ctx.stats.flags |= STAT_FMT_CSV;
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]4421 break;
4422 }
4423 h++;
4424 }
4425
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4426 t->data_ctx.stats.flags |= STAT_SHOW_STAT | STAT_SHOW_INFO;
4427
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4428 /* we are in front of a interceptable URI. Let's check
4429 * if there's an authentication and if it's valid.
4430 */
4431 user = uri_auth->users;
4432 if (!user) {
4433 /* no user auth required, it's OK */
4434 authenticated = 1;
4435 } else {
4436 authenticated = 0;
4437
4438 /* a user list is defined, we have to check.
4439 * skip 21 chars for "Authorization: Basic ".
4440 */
4441
4442 /* FIXME: this should move to an earlier place */
4443 cur_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4444 h = t->req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
4445 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4446 int len = txn->hdr_idx.v[cur_idx].len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4447 if (len > 14 &&
4448 !strncasecmp("Authorization:", h, 14)) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4449 txn->auth_hdr.str = h;
4450 txn->auth_hdr.len = len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4451 break;
4452 }
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4453 h += len + txn->hdr_idx.v[cur_idx].cr + 1;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4454 }
4455
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4456 if (txn->auth_hdr.len < 21 ||
4457 memcmp(txn->auth_hdr.str + 14, " Basic ", 7))
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4458 user = NULL;
4459
4460 while (user) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4461 if ((txn->auth_hdr.len == user->user_len + 14 + 7)
4462 && !memcmp(txn->auth_hdr.str + 14 + 7,
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4463 user->user_pwd, user->user_len)) {
4464 authenticated = 1;
4465 break;
4466 }
4467 user = user->next;
4468 }
4469 }
4470
4471 if (!authenticated) {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4472 struct chunk msg;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4473
4474 /* no need to go further */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4475 msg.str = trash;
4476 msg.len = sprintf(trash, HTTP_401_fmt, uri_auth->auth_realm);
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4477 txn->status = 401;
Willy Tarreaudded32d2008-11-30 19:48:07 +0100[diff] [blame]4478 stream_int_retnclose(t->req->prod, &msg);
Willy Tarreauf8533202008-08-16 14:55:08 +0200[diff] [blame]4479 trace_term(t, TT_HTTP_URI_1);
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]4480 t->req->analysers = 0;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4481 if (!(t->flags & SN_ERR_MASK))
4482 t->flags |= SN_ERR_PRXCOND;
4483 if (!(t->flags & SN_FINST_MASK))
4484 t->flags |= SN_FINST_R;
4485 return 1;
4486 }
4487
Willy Tarreau39f7e6d2008-03-17 21:38:24 +0100[diff] [blame]4488 /* The request is valid, the user is authenticated. Let's start sending
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4489 * data.
4490 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]4491 buffer_write_dis(t->req);
Willy Tarreau72b179a2008-08-28 16:01:32 +0200[diff] [blame]4492 buffer_shutw_now(t->req);
4493 buffer_shutr_now(t->rep);
4494 buffer_start_hijack(t->rep);
Willy Tarreau70089872008-06-13 21:12:51 +0200[diff] [blame]4495 t->logs.tv_request = now;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4496 t->data_source = DATA_SRC_STATS;
4497 t->data_state = DATA_ST_INIT;
Willy Tarreau91e99932008-06-30 07:51:00 +0200[diff] [blame]4498 t->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4499 produce_content(t);
4500 return 1;
4501}
4502
4503
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4504/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4505 * Print a debug line with a header
4506 */
4507void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
4508{
4509 int len, max;
4510 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4511 dir, (unsigned short)t->req->prod->fd, (unsigned short)t->req->cons->fd);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4512 max = end - start;
4513 UBOUND(max, sizeof(trash) - len - 1);
4514 len += strlcpy2(trash + len, start, max + 1);
4515 trash[len++] = '\n';
4516 write(1, trash, len);
4517}
4518
4519
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4520/************************************************************************/
4521/* The code below is dedicated to ACL parsing and matching */
4522/************************************************************************/
4523
4524
4525
4526
4527/* 1. Check on METHOD
4528 * We use the pre-parsed method if it is known, and store its number as an
4529 * integer. If it is unknown, we use the pointer and the length.
4530 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4531static int acl_parse_meth(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4532{
4533 int len, meth;
4534
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4535 len = strlen(*text);
4536 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4537
4538 pattern->val.i = meth;
4539 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4540 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4541 if (!pattern->ptr.str)
4542 return 0;
4543 pattern->len = len;
4544 }
4545 return 1;
4546}
4547
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4548static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4549acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, int dir,
4550 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4551{
4552 int meth;
4553 struct http_txn *txn = l7;
4554
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4555 if (!txn)
4556 return 0;
4557
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4558 if (txn->req.msg_state != HTTP_MSG_BODY)
4559 return 0;
4560
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4561 meth = txn->meth;
4562 test->i = meth;
4563 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4564 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4565 /* ensure the indexes are not affected */
4566 return 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4567 test->len = txn->req.sl.rq.m_l;
4568 test->ptr = txn->req.sol;
4569 }
4570 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4571 return 1;
4572}
4573
4574static int acl_match_meth(struct acl_test *test, struct acl_pattern *pattern)
4575{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4576 int icase;
4577
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4578 if (test->i != pattern->val.i)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4579 return ACL_PAT_FAIL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4580
4581 if (test->i != HTTP_METH_OTHER)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4582 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4583
4584 /* Other method, we must compare the strings */
4585 if (pattern->len != test->len)
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4586 return ACL_PAT_FAIL;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4587
4588 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
4589 if ((icase && strncasecmp(pattern->ptr.str, test->ptr, test->len) != 0) ||
4590 (!icase && strncmp(pattern->ptr.str, test->ptr, test->len) != 0))
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4591 return ACL_PAT_FAIL;
4592 return ACL_PAT_PASS;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4593}
4594
4595/* 2. Check on Request/Status Version
4596 * We simply compare strings here.
4597 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4598static int acl_parse_ver(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4599{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4600 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4601 if (!pattern->ptr.str)
4602 return 0;
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4603 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4604 return 1;
4605}
4606
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4607static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4608acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, int dir,
4609 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4610{
4611 struct http_txn *txn = l7;
4612 char *ptr;
4613 int len;
4614
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4615 if (!txn)
4616 return 0;
4617
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4618 if (txn->req.msg_state != HTTP_MSG_BODY)
4619 return 0;
4620
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4621 len = txn->req.sl.rq.v_l;
4622 ptr = txn->req.sol + txn->req.sl.rq.v - txn->req.som;
4623
4624 while ((len-- > 0) && (*ptr++ != '/'));
4625 if (len <= 0)
4626 return 0;
4627
4628 test->ptr = ptr;
4629 test->len = len;
4630
4631 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4632 return 1;
4633}
4634
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4635static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4636acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, int dir,
4637 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4638{
4639 struct http_txn *txn = l7;
4640 char *ptr;
4641 int len;
4642
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4643 if (!txn)
4644 return 0;
4645
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4646 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4647 return 0;
4648
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4649 len = txn->rsp.sl.st.v_l;
4650 ptr = txn->rsp.sol;
4651
4652 while ((len-- > 0) && (*ptr++ != '/'));
4653 if (len <= 0)
4654 return 0;
4655
4656 test->ptr = ptr;
4657 test->len = len;
4658
4659 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4660 return 1;
4661}
4662
4663/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4664static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4665acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, int dir,
4666 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4667{
4668 struct http_txn *txn = l7;
4669 char *ptr;
4670 int len;
4671
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4672 if (!txn)
4673 return 0;
4674
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4675 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4676 return 0;
4677
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4678 len = txn->rsp.sl.st.c_l;
4679 ptr = txn->rsp.sol + txn->rsp.sl.st.c - txn->rsp.som;
4680
4681 test->i = __strl2ui(ptr, len);
4682 test->flags = ACL_TEST_F_VOL_1ST;
4683 return 1;
4684}
4685
4686/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4687static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4688acl_fetch_url(struct proxy *px, struct session *l4, void *l7, int dir,
4689 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4690{
4691 struct http_txn *txn = l7;
4692
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4693 if (!txn)
4694 return 0;
4695
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4696 if (txn->req.msg_state != HTTP_MSG_BODY)
4697 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4698
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4699 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4700 /* ensure the indexes are not affected */
4701 return 0;
4702
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4703 test->len = txn->req.sl.rq.u_l;
4704 test->ptr = txn->req.sol + txn->req.sl.rq.u;
4705
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]4706 /* we do not need to set READ_ONLY because the data is in a buffer */
4707 test->flags = ACL_TEST_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4708 return 1;
4709}
4710
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4711static int
4712acl_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, int dir,
4713 struct acl_expr *expr, struct acl_test *test)
4714{
4715 struct http_txn *txn = l7;
4716
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4717 if (!txn)
4718 return 0;
4719
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4720 if (txn->req.msg_state != HTTP_MSG_BODY)
4721 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4722
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4723 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4724 /* ensure the indexes are not affected */
4725 return 0;
4726
4727 /* Parse HTTP request */
4728 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
4729 test->ptr = (void *)&((struct sockaddr_in *)&l4->srv_addr)->sin_addr;
4730 test->i = AF_INET;
4731
4732 /*
4733 * If we are parsing url in frontend space, we prepare backend stage
4734 * to not parse again the same url ! optimization lazyness...
4735 */
4736 if (px->options & PR_O_HTTP_PROXY)
4737 l4->flags |= SN_ADDR_SET;
4738
4739 test->flags = ACL_TEST_F_READ_ONLY;
4740 return 1;
4741}
4742
4743static int
4744acl_fetch_url_port(struct proxy *px, struct session *l4, void *l7, int dir,
4745 struct acl_expr *expr, struct acl_test *test)
4746{
4747 struct http_txn *txn = l7;
4748
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4749 if (!txn)
4750 return 0;
4751
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4752 if (txn->req.msg_state != HTTP_MSG_BODY)
4753 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4754
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4755 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4756 /* ensure the indexes are not affected */
4757 return 0;
4758
4759 /* Same optimization as url_ip */
4760 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
4761 test->i = ntohs(((struct sockaddr_in *)&l4->srv_addr)->sin_port);
4762
4763 if (px->options & PR_O_HTTP_PROXY)
4764 l4->flags |= SN_ADDR_SET;
4765
4766 test->flags = ACL_TEST_F_READ_ONLY;
4767 return 1;
4768}
4769
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4770/* 5. Check on HTTP header. A pointer to the beginning of the value is returned.
4771 * This generic function is used by both acl_fetch_chdr() and acl_fetch_shdr().
4772 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4773static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4774acl_fetch_hdr(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4775 struct acl_expr *expr, struct acl_test *test)
4776{
4777 struct http_txn *txn = l7;
4778 struct hdr_idx *idx = &txn->hdr_idx;
4779 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4780
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4781 if (!txn)
4782 return 0;
4783
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4784 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
4785 /* search for header from the beginning */
4786 ctx->idx = 0;
4787
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4788 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
4789 test->flags |= ACL_TEST_F_FETCH_MORE;
4790 test->flags |= ACL_TEST_F_VOL_HDR;
4791 test->len = ctx->vlen;
4792 test->ptr = (char *)ctx->line + ctx->val;
4793 return 1;
4794 }
4795
4796 test->flags &= ~ACL_TEST_F_FETCH_MORE;
4797 test->flags |= ACL_TEST_F_VOL_HDR;
4798 return 0;
4799}
4800
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4801static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4802acl_fetch_chdr(struct proxy *px, struct session *l4, void *l7, int dir,
4803 struct acl_expr *expr, struct acl_test *test)
4804{
4805 struct http_txn *txn = l7;
4806
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4807 if (!txn)
4808 return 0;
4809
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4810 if (txn->req.msg_state != HTTP_MSG_BODY)
4811 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4812
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4813 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4814 /* ensure the indexes are not affected */
4815 return 0;
4816
4817 return acl_fetch_hdr(px, l4, txn, txn->req.sol, expr, test);
4818}
4819
4820static int
4821acl_fetch_shdr(struct proxy *px, struct session *l4, void *l7, int dir,
4822 struct acl_expr *expr, struct acl_test *test)
4823{
4824 struct http_txn *txn = l7;
4825
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4826 if (!txn)
4827 return 0;
4828
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4829 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4830 return 0;
4831
4832 return acl_fetch_hdr(px, l4, txn, txn->rsp.sol, expr, test);
4833}
4834
4835/* 6. Check on HTTP header count. The number of occurrences is returned.
4836 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
4837 */
4838static int
4839acl_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4840 struct acl_expr *expr, struct acl_test *test)
4841{
4842 struct http_txn *txn = l7;
4843 struct hdr_idx *idx = &txn->hdr_idx;
4844 struct hdr_ctx ctx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4845 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4846
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4847 if (!txn)
4848 return 0;
4849
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4850 ctx.idx = 0;
4851 cnt = 0;
4852 while (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, &ctx))
4853 cnt++;
4854
4855 test->i = cnt;
4856 test->flags = ACL_TEST_F_VOL_HDR;
4857 return 1;
4858}
4859
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4860static int
4861acl_fetch_chdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
4862 struct acl_expr *expr, struct acl_test *test)
4863{
4864 struct http_txn *txn = l7;
4865
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4866 if (!txn)
4867 return 0;
4868
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4869 if (txn->req.msg_state != HTTP_MSG_BODY)
4870 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4871
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4872 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4873 /* ensure the indexes are not affected */
4874 return 0;
4875
4876 return acl_fetch_hdr_cnt(px, l4, txn, txn->req.sol, expr, test);
4877}
4878
4879static int
4880acl_fetch_shdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
4881 struct acl_expr *expr, struct acl_test *test)
4882{
4883 struct http_txn *txn = l7;
4884
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4885 if (!txn)
4886 return 0;
4887
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4888 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4889 return 0;
4890
4891 return acl_fetch_hdr_cnt(px, l4, txn, txn->rsp.sol, expr, test);
4892}
4893
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4894/* 7. Check on HTTP header's integer value. The integer value is returned.
4895 * FIXME: the type is 'int', it may not be appropriate for everything.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4896 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4897 */
4898static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4899acl_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4900 struct acl_expr *expr, struct acl_test *test)
4901{
4902 struct http_txn *txn = l7;
4903 struct hdr_idx *idx = &txn->hdr_idx;
4904 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4905
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4906 if (!txn)
4907 return 0;
4908
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4909 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
4910 /* search for header from the beginning */
4911 ctx->idx = 0;
4912
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4913 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
4914 test->flags |= ACL_TEST_F_FETCH_MORE;
4915 test->flags |= ACL_TEST_F_VOL_HDR;
4916 test->i = strl2ic((char *)ctx->line + ctx->val, ctx->vlen);
4917 return 1;
4918 }
4919
4920 test->flags &= ~ACL_TEST_F_FETCH_MORE;
4921 test->flags |= ACL_TEST_F_VOL_HDR;
4922 return 0;
4923}
4924
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4925static int
4926acl_fetch_chdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
4927 struct acl_expr *expr, struct acl_test *test)
4928{
4929 struct http_txn *txn = l7;
4930
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4931 if (!txn)
4932 return 0;
4933
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4934 if (txn->req.msg_state != HTTP_MSG_BODY)
4935 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4936
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4937 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4938 /* ensure the indexes are not affected */
4939 return 0;
4940
4941 return acl_fetch_hdr_val(px, l4, txn, txn->req.sol, expr, test);
4942}
4943
4944static int
4945acl_fetch_shdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
4946 struct acl_expr *expr, struct acl_test *test)
4947{
4948 struct http_txn *txn = l7;
4949
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4950 if (!txn)
4951 return 0;
4952
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4953 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4954 return 0;
4955
4956 return acl_fetch_hdr_val(px, l4, txn, txn->rsp.sol, expr, test);
4957}
4958
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]4959/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
4960 * the first '/' after the possible hostname, and ends before the possible '?'.
4961 */
4962static int
4963acl_fetch_path(struct proxy *px, struct session *l4, void *l7, int dir,
4964 struct acl_expr *expr, struct acl_test *test)
4965{
4966 struct http_txn *txn = l7;
4967 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]4968
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4969 if (!txn)
4970 return 0;
4971
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4972 if (txn->req.msg_state != HTTP_MSG_BODY)
4973 return 0;
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]4974
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4975 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4976 /* ensure the indexes are not affected */
4977 return 0;
4978
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]4979 end = txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
4980 ptr = http_get_path(txn);
4981 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]4982 return 0;
4983
4984 /* OK, we got the '/' ! */
4985 test->ptr = ptr;
4986
4987 while (ptr < end && *ptr != '?')
4988 ptr++;
4989
4990 test->len = ptr - test->ptr;
4991
4992 /* we do not need to set READ_ONLY because the data is in a buffer */
4993 test->flags = ACL_TEST_F_VOL_1ST;
4994 return 1;
4995}
4996
4997
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4998
4999/************************************************************************/
5000/* All supported keywords must be declared here. */
5001/************************************************************************/
5002
5003/* Note: must not be declared <const> as its list will be overwritten */
5004static struct acl_kw_list acl_kws = {{ },{
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5005 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth, ACL_USE_L7REQ_PERMANENT },
5006 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5007 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str, ACL_USE_L7RTR_VOLATILE },
5008 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int, ACL_USE_L7RTR_PERMANENT },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5009
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5010 { "url", acl_parse_str, acl_fetch_url, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5011 { "url_beg", acl_parse_str, acl_fetch_url, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
5012 { "url_end", acl_parse_str, acl_fetch_url, acl_match_end, ACL_USE_L7REQ_VOLATILE },
5013 { "url_sub", acl_parse_str, acl_fetch_url, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
5014 { "url_dir", acl_parse_str, acl_fetch_url, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
5015 { "url_dom", acl_parse_str, acl_fetch_url, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
5016 { "url_reg", acl_parse_reg, acl_fetch_url, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
5017 { "url_ip", acl_parse_ip, acl_fetch_url_ip, acl_match_ip, ACL_USE_L7REQ_VOLATILE },
5018 { "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]5019
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5020 /* note: we should set hdr* to use ACL_USE_HDR_VOLATILE, and chdr* to use L7REQ_VOLATILE */
5021 { "hdr", acl_parse_str, acl_fetch_chdr, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5022 { "hdr_reg", acl_parse_reg, acl_fetch_chdr, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
5023 { "hdr_beg", acl_parse_str, acl_fetch_chdr, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
5024 { "hdr_end", acl_parse_str, acl_fetch_chdr, acl_match_end, ACL_USE_L7REQ_VOLATILE },
5025 { "hdr_sub", acl_parse_str, acl_fetch_chdr, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
5026 { "hdr_dir", acl_parse_str, acl_fetch_chdr, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
5027 { "hdr_dom", acl_parse_str, acl_fetch_chdr, acl_match_dom, ACL_USE_L7REQ_VOLATILE },
5028 { "hdr_cnt", acl_parse_int, acl_fetch_chdr_cnt,acl_match_int, ACL_USE_L7REQ_VOLATILE },
5029 { "hdr_val", acl_parse_int, acl_fetch_chdr_val,acl_match_int, ACL_USE_L7REQ_VOLATILE },
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5030
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5031 { "shdr", acl_parse_str, acl_fetch_shdr, acl_match_str, ACL_USE_L7RTR_VOLATILE },
5032 { "shdr_reg", acl_parse_reg, acl_fetch_shdr, acl_match_reg, ACL_USE_L7RTR_VOLATILE },
5033 { "shdr_beg", acl_parse_str, acl_fetch_shdr, acl_match_beg, ACL_USE_L7RTR_VOLATILE },
5034 { "shdr_end", acl_parse_str, acl_fetch_shdr, acl_match_end, ACL_USE_L7RTR_VOLATILE },
5035 { "shdr_sub", acl_parse_str, acl_fetch_shdr, acl_match_sub, ACL_USE_L7RTR_VOLATILE },
5036 { "shdr_dir", acl_parse_str, acl_fetch_shdr, acl_match_dir, ACL_USE_L7RTR_VOLATILE },
5037 { "shdr_dom", acl_parse_str, acl_fetch_shdr, acl_match_dom, ACL_USE_L7RTR_VOLATILE },
5038 { "shdr_cnt", acl_parse_int, acl_fetch_shdr_cnt,acl_match_int, ACL_USE_L7RTR_VOLATILE },
5039 { "shdr_val", acl_parse_int, acl_fetch_shdr_val,acl_match_int, ACL_USE_L7RTR_VOLATILE },
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5040
Willy Tarreau0ceba5a2008-07-25 19:31:03 +0200[diff] [blame]5041 { "path", acl_parse_str, acl_fetch_path, acl_match_str, ACL_USE_L7REQ_VOLATILE },
5042 { "path_reg", acl_parse_reg, acl_fetch_path, acl_match_reg, ACL_USE_L7REQ_VOLATILE },
5043 { "path_beg", acl_parse_str, acl_fetch_path, acl_match_beg, ACL_USE_L7REQ_VOLATILE },
5044 { "path_end", acl_parse_str, acl_fetch_path, acl_match_end, ACL_USE_L7REQ_VOLATILE },
5045 { "path_sub", acl_parse_str, acl_fetch_path, acl_match_sub, ACL_USE_L7REQ_VOLATILE },
5046 { "path_dir", acl_parse_str, acl_fetch_path, acl_match_dir, ACL_USE_L7REQ_VOLATILE },
5047 { "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]5048
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]5049 { NULL, NULL, NULL, NULL },
5050
5051#if 0
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5052 { "line", acl_parse_str, acl_fetch_line, acl_match_str },
5053 { "line_reg", acl_parse_reg, acl_fetch_line, acl_match_reg },
5054 { "line_beg", acl_parse_str, acl_fetch_line, acl_match_beg },
5055 { "line_end", acl_parse_str, acl_fetch_line, acl_match_end },
5056 { "line_sub", acl_parse_str, acl_fetch_line, acl_match_sub },
5057 { "line_dir", acl_parse_str, acl_fetch_line, acl_match_dir },
5058 { "line_dom", acl_parse_str, acl_fetch_line, acl_match_dom },
5059
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5060 { "cook", acl_parse_str, acl_fetch_cook, acl_match_str },
5061 { "cook_reg", acl_parse_reg, acl_fetch_cook, acl_match_reg },
5062 { "cook_beg", acl_parse_str, acl_fetch_cook, acl_match_beg },
5063 { "cook_end", acl_parse_str, acl_fetch_cook, acl_match_end },
5064 { "cook_sub", acl_parse_str, acl_fetch_cook, acl_match_sub },
5065 { "cook_dir", acl_parse_str, acl_fetch_cook, acl_match_dir },
5066 { "cook_dom", acl_parse_str, acl_fetch_cook, acl_match_dom },
5067 { "cook_pst", acl_parse_none, acl_fetch_cook, acl_match_pst },
5068
5069 { "auth_user", acl_parse_str, acl_fetch_user, acl_match_str },
5070 { "auth_regex", acl_parse_reg, acl_fetch_user, acl_match_reg },
5071 { "auth_clear", acl_parse_str, acl_fetch_auth, acl_match_str },
5072 { "auth_md5", acl_parse_str, acl_fetch_auth, acl_match_md5 },
5073 { NULL, NULL, NULL, NULL },
5074#endif
5075}};
5076
5077
5078__attribute__((constructor))
5079static void __http_protocol_init(void)
5080{
5081 acl_register_keywords(&acl_kws);
5082}
5083
5084
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5085/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5086 * Local variables:
5087 * c-indent-level: 8
5088 * c-basic-offset: 8
5089 * End:
5090 */