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git01.mediatek.com / haproxy / b3f32f5f8abc40b90a4fca4c9be19a571e63b7eb / . / src / proto_http.c
blob: 370fded297c48355fde53e074f8b577cf8717b2a [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4 * Copyright 2000-2007 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>
33#include <common/time.h>
34#include <common/uri_auth.h>
35#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]36
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]37#include <types/acl.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]38#include <types/capture.h>
39#include <types/client.h>
40#include <types/global.h>
41#include <types/httperr.h>
42#include <types/polling.h>
43#include <types/proxy.h>
44#include <types/server.h>
45
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]46#include <proto/acl.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]47#include <proto/backend.h>
48#include <proto/buffers.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]49#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]50#include <proto/fd.h>
51#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]52#include <proto/hdr_idx.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]53#include <proto/proto_http.h>
54#include <proto/queue.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]55#include <proto/senddata.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]56#include <proto/session.h>
57#include <proto/task.h>
58
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]59#ifdef CONFIG_HAP_TCPSPLICE
60#include <libtcpsplice.h>
61#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]62
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]63#define DEBUG_PARSE_NO_SPEEDUP
64#undef DEBUG_PARSE_NO_SPEEDUP
65
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]66/* This is used to perform a quick jump as an alternative to a break/continue
67 * instruction. The first argument is the label for normal operation, and the
68 * second one is the break/continue instruction in the no_speedup mode.
69 */
70
71#ifdef DEBUG_PARSE_NO_SPEEDUP
72#define QUICK_JUMP(x,y) y
73#else
74#define QUICK_JUMP(x,y) goto x
75#endif
76
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]77/* This is used by remote monitoring */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]78const char HTTP_200[] =
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]79 "HTTP/1.0 200 OK\r\n"
80 "Cache-Control: no-cache\r\n"
81 "Connection: close\r\n"
82 "Content-Type: text/html\r\n"
83 "\r\n"
84 "<html><body><h1>200 OK</h1>\nHAProxy: service ready.\n</body></html>\n";
85
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]86const struct chunk http_200_chunk = {
87 .str = (char *)&HTTP_200,
88 .len = sizeof(HTTP_200)-1
89};
90
91const char *HTTP_302 =
92 "HTTP/1.0 302 Found\r\n"
93 "Cache-Control: no-cache\r\n"
94 "Connection: close\r\n"
95 "Location: "; /* not terminated since it will be concatenated with the URL */
96
97/* same as 302 except that the browser MUST retry with the GET method */
98const char *HTTP_303 =
99 "HTTP/1.0 303 See Other\r\n"
100 "Cache-Control: no-cache\r\n"
101 "Connection: close\r\n"
102 "Location: "; /* not terminated since it will be concatenated with the URL */
103
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]104/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
105const char *HTTP_401_fmt =
106 "HTTP/1.0 401 Unauthorized\r\n"
107 "Cache-Control: no-cache\r\n"
108 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]109 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]110 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
111 "\r\n"
112 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
113
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]114
115const int http_err_codes[HTTP_ERR_SIZE] = {
116 [HTTP_ERR_400] = 400,
117 [HTTP_ERR_403] = 403,
118 [HTTP_ERR_408] = 408,
119 [HTTP_ERR_500] = 500,
120 [HTTP_ERR_502] = 502,
121 [HTTP_ERR_503] = 503,
122 [HTTP_ERR_504] = 504,
123};
124
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]125static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]126 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]127 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]128 "Cache-Control: no-cache\r\n"
129 "Connection: close\r\n"
130 "Content-Type: text/html\r\n"
131 "\r\n"
132 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
133
134 [HTTP_ERR_403] =
135 "HTTP/1.0 403 Forbidden\r\n"
136 "Cache-Control: no-cache\r\n"
137 "Connection: close\r\n"
138 "Content-Type: text/html\r\n"
139 "\r\n"
140 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
141
142 [HTTP_ERR_408] =
143 "HTTP/1.0 408 Request Time-out\r\n"
144 "Cache-Control: no-cache\r\n"
145 "Connection: close\r\n"
146 "Content-Type: text/html\r\n"
147 "\r\n"
148 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
149
150 [HTTP_ERR_500] =
151 "HTTP/1.0 500 Server Error\r\n"
152 "Cache-Control: no-cache\r\n"
153 "Connection: close\r\n"
154 "Content-Type: text/html\r\n"
155 "\r\n"
156 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
157
158 [HTTP_ERR_502] =
159 "HTTP/1.0 502 Bad Gateway\r\n"
160 "Cache-Control: no-cache\r\n"
161 "Connection: close\r\n"
162 "Content-Type: text/html\r\n"
163 "\r\n"
164 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
165
166 [HTTP_ERR_503] =
167 "HTTP/1.0 503 Service Unavailable\r\n"
168 "Cache-Control: no-cache\r\n"
169 "Connection: close\r\n"
170 "Content-Type: text/html\r\n"
171 "\r\n"
172 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
173
174 [HTTP_ERR_504] =
175 "HTTP/1.0 504 Gateway Time-out\r\n"
176 "Cache-Control: no-cache\r\n"
177 "Connection: close\r\n"
178 "Content-Type: text/html\r\n"
179 "\r\n"
180 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
181
182};
183
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]184/* We must put the messages here since GCC cannot initialize consts depending
185 * on strlen().
186 */
187struct chunk http_err_chunks[HTTP_ERR_SIZE];
188
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]189#define FD_SETS_ARE_BITFIELDS
190#ifdef FD_SETS_ARE_BITFIELDS
191/*
192 * This map is used with all the FD_* macros to check whether a particular bit
193 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
194 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
195 * byte should be encoded. Be careful to always pass bytes from 0 to 255
196 * exclusively to the macros.
197 */
198fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
199fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
200
201#else
202#error "Check if your OS uses bitfields for fd_sets"
203#endif
204
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]205void init_proto_http()
206{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]207 int i;
208 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]209 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]210
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]211 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
212 if (!http_err_msgs[msg]) {
213 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
214 abort();
215 }
216
217 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
218 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
219 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]220
221 /* initialize the log header encoding map : '{|}"#' should be encoded with
222 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
223 * URL encoding only requires '"', '#' to be encoded as well as non-
224 * printable characters above.
225 */
226 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
227 memset(url_encode_map, 0, sizeof(url_encode_map));
228 for (i = 0; i < 32; i++) {
229 FD_SET(i, hdr_encode_map);
230 FD_SET(i, url_encode_map);
231 }
232 for (i = 127; i < 256; i++) {
233 FD_SET(i, hdr_encode_map);
234 FD_SET(i, url_encode_map);
235 }
236
237 tmp = "\"#{|}";
238 while (*tmp) {
239 FD_SET(*tmp, hdr_encode_map);
240 tmp++;
241 }
242
243 tmp = "\"#";
244 while (*tmp) {
245 FD_SET(*tmp, url_encode_map);
246 tmp++;
247 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]248
249 /* memory allocations */
250 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]251 pool2_capture = create_pool("capture", CAPTURE_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]252}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]253
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]254/*
255 * We have 26 list of methods (1 per first letter), each of which can have
256 * up to 3 entries (2 valid, 1 null).
257 */
258struct http_method_desc {
259 http_meth_t meth;
260 int len;
261 const char text[8];
262};
263
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]264const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]265 ['C' - 'A'] = {
266 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
267 },
268 ['D' - 'A'] = {
269 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
270 },
271 ['G' - 'A'] = {
272 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
273 },
274 ['H' - 'A'] = {
275 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
276 },
277 ['P' - 'A'] = {
278 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
279 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
280 },
281 ['T' - 'A'] = {
282 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
283 },
284 /* rest is empty like this :
285 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
286 */
287};
288
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]289/* It is about twice as fast on recent architectures to lookup a byte in a
290 * table than two perform a boolean AND or OR between two tests. Refer to
291 * RFC2616 for those chars.
292 */
293
294const char http_is_spht[256] = {
295 [' '] = 1, ['\t'] = 1,
296};
297
298const char http_is_crlf[256] = {
299 ['\r'] = 1, ['\n'] = 1,
300};
301
302const char http_is_lws[256] = {
303 [' '] = 1, ['\t'] = 1,
304 ['\r'] = 1, ['\n'] = 1,
305};
306
307const char http_is_sep[256] = {
308 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
309 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
310 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
311 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
312 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
313};
314
315const char http_is_ctl[256] = {
316 [0 ... 31] = 1,
317 [127] = 1,
318};
319
320/*
321 * A token is any ASCII char that is neither a separator nor a CTL char.
322 * Do not overwrite values in assignment since gcc-2.95 will not handle
323 * them correctly. Instead, define every non-CTL char's status.
324 */
325const char http_is_token[256] = {
326 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
327 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
328 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
329 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
330 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
331 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
332 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
333 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
334 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
335 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
336 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
337 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
338 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
339 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
340 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
341 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
342 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
343 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
344 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
345 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
346 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
347 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
348 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
349 ['|'] = 1, ['}'] = 0, ['~'] = 1,
350};
351
352
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]353/*
354 * An http ver_token is any ASCII which can be found in an HTTP version,
355 * which includes 'H', 'T', 'P', '/', '.' and any digit.
356 */
357const char http_is_ver_token[256] = {
358 ['.'] = 1, ['/'] = 1,
359 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
360 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
361 ['H'] = 1, ['P'] = 1, ['T'] = 1,
362};
363
364
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]365#ifdef DEBUG_FULL
366static char *cli_stnames[5] = {"HDR", "DAT", "SHR", "SHW", "CLS" };
367static char *srv_stnames[7] = {"IDL", "CON", "HDR", "DAT", "SHR", "SHW", "CLS" };
368#endif
369
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]370static void http_sess_log(struct session *s);
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 Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]538/* This function turns the server state into the SV_STCLOSE, and sets
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]539 * indicators accordingly. Note that if <status> is 0, or if the message
540 * pointer is NULL, then no message is returned.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]541 */
542void srv_close_with_err(struct session *t, int err, int finst,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]543 int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]544{
545 t->srv_state = SV_STCLOSE;
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]546 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]547 t->txn.status = status;
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]548 if (t->fe->mode == PR_MODE_HTTP)
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]549 client_return(t, msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]550 }
551 if (!(t->flags & SN_ERR_MASK))
552 t->flags |= err;
553 if (!(t->flags & SN_FINST_MASK))
554 t->flags |= finst;
555}
556
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]557/* This function returns the appropriate error location for the given session
558 * and message.
559 */
560
561struct chunk *error_message(struct session *s, int msgnum)
562{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]563 if (s->be->errmsg[msgnum].str)
564 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]565 else if (s->fe->errmsg[msgnum].str)
566 return &s->fe->errmsg[msgnum];
567 else
568 return &http_err_chunks[msgnum];
569}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]570
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]571/*
572 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
573 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
574 */
575static http_meth_t find_http_meth(const char *str, const int len)
576{
577 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]578 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]579
580 m = ((unsigned)*str - 'A');
581
582 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]583 for (h = http_methods[m]; h->len > 0; h++) {
584 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]585 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]586 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]587 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]588 };
589 return HTTP_METH_OTHER;
590 }
591 return HTTP_METH_NONE;
592
593}
594
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]595/* Processes the client and server jobs of a session task, then
596 * puts it back to the wait queue in a clean state, or
597 * cleans up its resources if it must be deleted. Returns
598 * the time the task accepts to wait, or TIME_ETERNITY for
599 * infinity.
600 */
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]601void process_session(struct task *t, struct timeval *next)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]602{
603 struct session *s = t->context;
604 int fsm_resync = 0;
605
606 do {
607 fsm_resync = 0;
608 //fprintf(stderr,"before_cli:cli=%d, srv=%d\n", s->cli_state, s->srv_state);
609 fsm_resync |= process_cli(s);
610 //fprintf(stderr,"cli/srv:cli=%d, srv=%d\n", s->cli_state, s->srv_state);
611 fsm_resync |= process_srv(s);
612 //fprintf(stderr,"after_srv:cli=%d, srv=%d\n", s->cli_state, s->srv_state);
613 } while (fsm_resync);
614
Willy Tarreauf41d4b12007-04-28 23:26:14 +0200[diff] [blame]615 if (likely(s->cli_state != CL_STCLOSE || s->srv_state != SV_STCLOSE)) {
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100[diff] [blame]616
617 if ((s->fe->options & PR_O_CONTSTATS) && (s->flags & SN_BE_ASSIGNED))
618 session_process_counters(s);
619
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]620 s->req->flags &= BF_CLEAR_READ & BF_CLEAR_WRITE;
621 s->rep->flags &= BF_CLEAR_READ & BF_CLEAR_WRITE;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]622
Willy Tarreaua6a6a932007-04-28 22:40:08 +0200[diff] [blame]623 t->expire = s->req->rex;
624 tv_min(&t->expire, &s->req->rex, &s->req->wex);
625 tv_bound(&t->expire, &s->req->cex);
626 tv_bound(&t->expire, &s->rep->rex);
627 tv_bound(&t->expire, &s->rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]628
629 /* restore t to its place in the task list */
630 task_queue(t);
631
632#ifdef DEBUG_FULL
633 /* DEBUG code : this should never ever happen, otherwise it indicates
634 * that a task still has something to do and will provoke a quick loop.
635 */
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]636 if (tv_remain2(&now, &t->expire) <= 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]637 exit(100);
638#endif
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]639 *next = t->expire;
640 return; /* nothing more to do */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]641 }
642
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]643 s->fe->feconn--;
644 if (s->flags & SN_BE_ASSIGNED)
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]645 s->be->beconn--;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]646 actconn--;
647
Willy Tarreauf41d4b12007-04-28 23:26:14 +0200[diff] [blame]648 if (unlikely((global.mode & MODE_DEBUG) &&
649 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]650 int len;
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]651 len = sprintf(trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]652 s->uniq_id, s->be->id,
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]653 (unsigned short)s->cli_fd, (unsigned short)s->srv_fd);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]654 write(1, trash, len);
655 }
656
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]657 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100[diff] [blame]658 session_process_counters(s);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]659
660 /* let's do a final log if we need it */
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]661 if (s->logs.logwait &&
662 !(s->flags & SN_MONITOR) &&
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]663 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
664 if (s->fe->to_log & LW_REQ)
665 http_sess_log(s);
666 else
667 tcp_sess_log(s);
668 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]669
670 /* the task MUST not be in the run queue anymore */
671 task_delete(t);
672 session_free(s);
673 task_free(t);
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]674 tv_eternity(next);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]675}
676
677
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]678extern const char sess_term_cond[8];
679extern const char sess_fin_state[8];
680extern const char *monthname[12];
681const char sess_cookie[4] = "NIDV"; /* No cookie, Invalid cookie, cookie for a Down server, Valid cookie */
682const char sess_set_cookie[8] = "N1I3PD5R"; /* No set-cookie, unknown, Set-Cookie Inserted, unknown,
683 Set-cookie seen and left unchanged (passive), Set-cookie Deleted,
684 unknown, Set-cookie Rewritten */
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]685struct pool_head *pool2_requri;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]686struct pool_head *pool2_capture;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]687
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]688/*
689 * send a log for the session when we have enough info about it.
690 * Will not log if the frontend has no log defined.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]691 */
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]692static void http_sess_log(struct session *s)
693{
694 char pn[INET6_ADDRSTRLEN + strlen(":65535")];
695 struct proxy *fe = s->fe;
696 struct proxy *be = s->be;
697 struct proxy *prx_log;
698 struct http_txn *txn = &s->txn;
699 int tolog;
700 char *uri, *h;
701 char *svid;
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]702 struct tm tm;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]703 static char tmpline[MAX_SYSLOG_LEN];
704 int hdr;
705
706 if (fe->logfac1 < 0 && fe->logfac2 < 0)
707 return;
708 prx_log = fe;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]709
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]710 if (s->cli_addr.ss_family == AF_INET)
711 inet_ntop(AF_INET,
712 (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
713 pn, sizeof(pn));
714 else
715 inet_ntop(AF_INET6,
716 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
717 pn, sizeof(pn));
718
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]719 get_localtime(s->logs.tv_accept.tv_sec, &tm);
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]720
721 /* FIXME: let's limit ourselves to frontend logging for now. */
722 tolog = fe->to_log;
723
724 h = tmpline;
725 if (fe->to_log & LW_REQHDR &&
726 txn->req.cap &&
727 (h < tmpline + sizeof(tmpline) - 10)) {
728 *(h++) = ' ';
729 *(h++) = '{';
730 for (hdr = 0; hdr < fe->nb_req_cap; hdr++) {
731 if (hdr)
732 *(h++) = '|';
733 if (txn->req.cap[hdr] != NULL)
734 h = encode_string(h, tmpline + sizeof(tmpline) - 7,
735 '#', hdr_encode_map, txn->req.cap[hdr]);
736 }
737 *(h++) = '}';
738 }
739
740 if (fe->to_log & LW_RSPHDR &&
741 txn->rsp.cap &&
742 (h < tmpline + sizeof(tmpline) - 7)) {
743 *(h++) = ' ';
744 *(h++) = '{';
745 for (hdr = 0; hdr < fe->nb_rsp_cap; hdr++) {
746 if (hdr)
747 *(h++) = '|';
748 if (txn->rsp.cap[hdr] != NULL)
749 h = encode_string(h, tmpline + sizeof(tmpline) - 4,
750 '#', hdr_encode_map, txn->rsp.cap[hdr]);
751 }
752 *(h++) = '}';
753 }
754
755 if (h < tmpline + sizeof(tmpline) - 4) {
756 *(h++) = ' ';
757 *(h++) = '"';
758 uri = txn->uri ? txn->uri : "<BADREQ>";
759 h = encode_string(h, tmpline + sizeof(tmpline) - 1,
760 '#', url_encode_map, uri);
761 *(h++) = '"';
762 }
763 *h = '\0';
764
765 svid = (tolog & LW_SVID) ?
766 (s->data_source != DATA_SRC_STATS) ?
767 (s->srv != NULL) ? s->srv->id : "<NOSRV>" : "<STATS>" : "-";
768
769 send_log(prx_log, LOG_INFO,
770 "%s:%d [%02d/%s/%04d:%02d:%02d:%02d.%03d]"
771 " %s %s/%s %d/%d/%d/%d/%s%d %d %s%lld"
772 " %s %s %c%c%c%c %d/%d/%d/%d %d/%d%s\n",
773 pn,
774 (s->cli_addr.ss_family == AF_INET) ?
775 ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port) :
776 ntohs(((struct sockaddr_in6 *)&s->cli_addr)->sin6_port),
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]777 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
778 tm.tm_hour, tm.tm_min, tm.tm_sec, s->logs.tv_accept.tv_usec/1000,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]779 fe->id, be->id, svid,
780 s->logs.t_request,
781 (s->logs.t_queue >= 0) ? s->logs.t_queue - s->logs.t_request : -1,
782 (s->logs.t_connect >= 0) ? s->logs.t_connect - s->logs.t_queue : -1,
783 (s->logs.t_data >= 0) ? s->logs.t_data - s->logs.t_connect : -1,
784 (tolog & LW_BYTES) ? "" : "+", s->logs.t_close,
785 txn->status,
786 (tolog & LW_BYTES) ? "" : "+", s->logs.bytes_in,
787 txn->cli_cookie ? txn->cli_cookie : "-",
788 txn->srv_cookie ? txn->srv_cookie : "-",
789 sess_term_cond[(s->flags & SN_ERR_MASK) >> SN_ERR_SHIFT],
790 sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_FINST_SHIFT],
791 (be->options & PR_O_COOK_ANY) ? sess_cookie[(txn->flags & TX_CK_MASK) >> TX_CK_SHIFT] : '-',
792 (be->options & PR_O_COOK_ANY) ? sess_set_cookie[(txn->flags & TX_SCK_MASK) >> TX_SCK_SHIFT] : '-',
793 actconn, fe->feconn, be->beconn, s->srv ? s->srv->cur_sess : 0,
794 s->logs.srv_queue_size, s->logs.prx_queue_size, tmpline);
795
796 s->logs.logwait = 0;
797}
798
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]799
800/*
801 * Capture headers from message starting at <som> according to header list
802 * <cap_hdr>, and fill the <idx> structure appropriately.
803 */
804void capture_headers(char *som, struct hdr_idx *idx,
805 char **cap, struct cap_hdr *cap_hdr)
806{
807 char *eol, *sol, *col, *sov;
808 int cur_idx;
809 struct cap_hdr *h;
810 int len;
811
812 sol = som + hdr_idx_first_pos(idx);
813 cur_idx = hdr_idx_first_idx(idx);
814
815 while (cur_idx) {
816 eol = sol + idx->v[cur_idx].len;
817
818 col = sol;
819 while (col < eol && *col != ':')
820 col++;
821
822 sov = col + 1;
823 while (sov < eol && http_is_lws[(unsigned char)*sov])
824 sov++;
825
826 for (h = cap_hdr; h; h = h->next) {
827 if ((h->namelen == col - sol) &&
828 (strncasecmp(sol, h->name, h->namelen) == 0)) {
829 if (cap[h->index] == NULL)
830 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]831 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]832
833 if (cap[h->index] == NULL) {
834 Alert("HTTP capture : out of memory.\n");
835 continue;
836 }
837
838 len = eol - sov;
839 if (len > h->len)
840 len = h->len;
841
842 memcpy(cap[h->index], sov, len);
843 cap[h->index][len]=0;
844 }
845 }
846 sol = eol + idx->v[cur_idx].cr + 1;
847 cur_idx = idx->v[cur_idx].next;
848 }
849}
850
851
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]852/* either we find an LF at <ptr> or we jump to <bad>.
853 */
854#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
855
856/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
857 * otherwise to <http_msg_ood> with <state> set to <st>.
858 */
859#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
860 ptr++; \
861 if (likely(ptr < end)) \
862 goto good; \
863 else { \
864 state = (st); \
865 goto http_msg_ood; \
866 } \
867 } while (0)
868
869
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]870/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]871 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]872 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
873 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
874 * will give undefined results.
875 * Note that it is upon the caller's responsibility to ensure that ptr < end,
876 * and that msg->sol points to the beginning of the response.
877 * If a complete line is found (which implies that at least one CR or LF is
878 * found before <end>, the updated <ptr> is returned, otherwise NULL is
879 * returned indicating an incomplete line (which does not mean that parts have
880 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
881 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
882 * upon next call.
883 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]884 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]885 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
886 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]887 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]888 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]889const char *http_parse_stsline(struct http_msg *msg, const char *msg_buf, int state,
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]890 const char *ptr, const char *end,
891 char **ret_ptr, int *ret_state)
892{
893 __label__
894 http_msg_rpver,
895 http_msg_rpver_sp,
896 http_msg_rpcode,
897 http_msg_rpcode_sp,
898 http_msg_rpreason,
899 http_msg_rpline_eol,
900 http_msg_ood, /* out of data */
901 http_msg_invalid;
902
903 switch (state) {
904 http_msg_rpver:
905 case HTTP_MSG_RPVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]906 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]907 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
908
909 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]910 msg->sl.st.v_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]911 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
912 }
913 goto http_msg_invalid;
914
915 http_msg_rpver_sp:
916 case HTTP_MSG_RPVER_SP:
917 if (likely(!HTTP_IS_LWS(*ptr))) {
918 msg->sl.st.c = ptr - msg_buf;
919 goto http_msg_rpcode;
920 }
921 if (likely(HTTP_IS_SPHT(*ptr)))
922 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
923 /* so it's a CR/LF, this is invalid */
924 goto http_msg_invalid;
925
926 http_msg_rpcode:
927 case HTTP_MSG_RPCODE:
928 if (likely(!HTTP_IS_LWS(*ptr)))
929 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
930
931 if (likely(HTTP_IS_SPHT(*ptr))) {
932 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
933 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
934 }
935
936 /* so it's a CR/LF, so there is no reason phrase */
937 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
938 http_msg_rsp_reason:
939 /* FIXME: should we support HTTP responses without any reason phrase ? */
940 msg->sl.st.r = ptr - msg_buf;
941 msg->sl.st.r_l = 0;
942 goto http_msg_rpline_eol;
943
944 http_msg_rpcode_sp:
945 case HTTP_MSG_RPCODE_SP:
946 if (likely(!HTTP_IS_LWS(*ptr))) {
947 msg->sl.st.r = ptr - msg_buf;
948 goto http_msg_rpreason;
949 }
950 if (likely(HTTP_IS_SPHT(*ptr)))
951 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
952 /* so it's a CR/LF, so there is no reason phrase */
953 goto http_msg_rsp_reason;
954
955 http_msg_rpreason:
956 case HTTP_MSG_RPREASON:
957 if (likely(!HTTP_IS_CRLF(*ptr)))
958 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
959 msg->sl.st.r_l = (ptr - msg_buf) - msg->sl.st.r;
960 http_msg_rpline_eol:
961 /* We have seen the end of line. Note that we do not
962 * necessarily have the \n yet, but at least we know that we
963 * have EITHER \r OR \n, otherwise the response would not be
964 * complete. We can then record the response length and return
965 * to the caller which will be able to register it.
966 */
967 msg->sl.st.l = ptr - msg->sol;
968 return ptr;
969
970#ifdef DEBUG_FULL
971 default:
972 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
973 exit(1);
974#endif
975 }
976
977 http_msg_ood:
978 /* out of data */
979 if (ret_state)
980 *ret_state = state;
981 if (ret_ptr)
982 *ret_ptr = (char *)ptr;
983 return NULL;
984
985 http_msg_invalid:
986 /* invalid message */
987 if (ret_state)
988 *ret_state = HTTP_MSG_ERROR;
989 return NULL;
990}
991
992
993/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]994 * This function parses a request line between <ptr> and <end>, starting with
995 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
996 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
997 * will give undefined results.
998 * Note that it is upon the caller's responsibility to ensure that ptr < end,
999 * and that msg->sol points to the beginning of the request.
1000 * If a complete line is found (which implies that at least one CR or LF is
1001 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1002 * returned indicating an incomplete line (which does not mean that parts have
1003 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1004 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1005 * upon next call.
1006 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1007 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1008 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1009 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1010 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1011 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1012const char *http_parse_reqline(struct http_msg *msg, const char *msg_buf, int state,
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1013 const char *ptr, const char *end,
1014 char **ret_ptr, int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1015{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1016 __label__
1017 http_msg_rqmeth,
1018 http_msg_rqmeth_sp,
1019 http_msg_rquri,
1020 http_msg_rquri_sp,
1021 http_msg_rqver,
1022 http_msg_rqline_eol,
1023 http_msg_ood, /* out of data */
1024 http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1025
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1026 switch (state) {
1027 http_msg_rqmeth:
1028 case HTTP_MSG_RQMETH:
1029 if (likely(HTTP_IS_TOKEN(*ptr)))
1030 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1031
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1032 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1033 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1034 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1035 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1036
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1037 if (likely(HTTP_IS_CRLF(*ptr))) {
1038 /* HTTP 0.9 request */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1039 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1040 http_msg_req09_uri:
1041 msg->sl.rq.u = ptr - msg_buf;
1042 http_msg_req09_uri_e:
1043 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1044 http_msg_req09_ver:
1045 msg->sl.rq.v = ptr - msg_buf;
1046 msg->sl.rq.v_l = 0;
1047 goto http_msg_rqline_eol;
1048 }
1049 goto http_msg_invalid;
1050
1051 http_msg_rqmeth_sp:
1052 case HTTP_MSG_RQMETH_SP:
1053 if (likely(!HTTP_IS_LWS(*ptr))) {
1054 msg->sl.rq.u = ptr - msg_buf;
1055 goto http_msg_rquri;
1056 }
1057 if (likely(HTTP_IS_SPHT(*ptr)))
1058 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1059 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1060 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1061
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1062 http_msg_rquri:
1063 case HTTP_MSG_RQURI:
1064 if (likely(!HTTP_IS_LWS(*ptr)))
1065 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1066
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1067 if (likely(HTTP_IS_SPHT(*ptr))) {
1068 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1069 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1070 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1071
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1072 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1073 goto http_msg_req09_uri_e;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1074
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1075 http_msg_rquri_sp:
1076 case HTTP_MSG_RQURI_SP:
1077 if (likely(!HTTP_IS_LWS(*ptr))) {
1078 msg->sl.rq.v = ptr - msg_buf;
1079 goto http_msg_rqver;
1080 }
1081 if (likely(HTTP_IS_SPHT(*ptr)))
1082 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1083 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1084 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1085
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1086 http_msg_rqver:
1087 case HTTP_MSG_RQVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1088 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1089 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1090
1091 if (likely(HTTP_IS_CRLF(*ptr))) {
1092 msg->sl.rq.v_l = (ptr - msg_buf) - msg->sl.rq.v;
1093 http_msg_rqline_eol:
1094 /* We have seen the end of line. Note that we do not
1095 * necessarily have the \n yet, but at least we know that we
1096 * have EITHER \r OR \n, otherwise the request would not be
1097 * complete. We can then record the request length and return
1098 * to the caller which will be able to register it.
1099 */
1100 msg->sl.rq.l = ptr - msg->sol;
1101 return ptr;
1102 }
1103
1104 /* neither an HTTP_VER token nor a CRLF */
1105 goto http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1106
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1107#ifdef DEBUG_FULL
1108 default:
1109 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1110 exit(1);
1111#endif
1112 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1113
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1114 http_msg_ood:
1115 /* out of data */
1116 if (ret_state)
1117 *ret_state = state;
1118 if (ret_ptr)
1119 *ret_ptr = (char *)ptr;
1120 return NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1121
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1122 http_msg_invalid:
1123 /* invalid message */
1124 if (ret_state)
1125 *ret_state = HTTP_MSG_ERROR;
1126 return NULL;
1127}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1128
1129
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1130/*
1131 * This function parses an HTTP message, either a request or a response,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1132 * depending on the initial msg->msg_state. It can be preempted everywhere
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1133 * when data are missing and recalled at the exact same location with no
1134 * information loss. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1135 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
1136 * fields.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1137 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1138void http_msg_analyzer(struct buffer *buf, struct http_msg *msg, struct hdr_idx *idx)
1139{
1140 __label__
1141 http_msg_rqbefore,
1142 http_msg_rqbefore_cr,
1143 http_msg_rqmeth,
1144 http_msg_rqline_end,
1145 http_msg_hdr_first,
1146 http_msg_hdr_name,
1147 http_msg_hdr_l1_sp,
1148 http_msg_hdr_l1_lf,
1149 http_msg_hdr_l1_lws,
1150 http_msg_hdr_val,
1151 http_msg_hdr_l2_lf,
1152 http_msg_hdr_l2_lws,
1153 http_msg_complete_header,
1154 http_msg_last_lf,
1155 http_msg_ood, /* out of data */
1156 http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1157
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1158 int state; /* updated only when leaving the FSM */
1159 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1160
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1161 state = msg->msg_state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1162 ptr = buf->lr;
1163 end = buf->r;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1164
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1165 if (unlikely(ptr >= end))
1166 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1167
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1168 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1169 /*
1170 * First, states that are specific to the response only.
1171 * We check them first so that request and headers are
1172 * closer to each other (accessed more often).
1173 */
1174 http_msg_rpbefore:
1175 case HTTP_MSG_RPBEFORE:
1176 if (likely(HTTP_IS_TOKEN(*ptr))) {
1177 if (likely(ptr == buf->data)) {
1178 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1179 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1180 } else {
1181#if PARSE_PRESERVE_EMPTY_LINES
1182 /* only skip empty leading lines, don't remove them */
1183 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1184 msg->som = ptr - buf->data;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1185#else
1186 /* Remove empty leading lines, as recommended by
1187 * RFC2616. This takes a lot of time because we
1188 * must move all the buffer backwards, but this
1189 * is rarely needed. The method above will be
1190 * cleaner when we'll be able to start sending
1191 * the request from any place in the buffer.
1192 */
1193 buf->lr = ptr;
1194 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1195 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1196 msg->sol = buf->data;
1197 ptr = buf->data;
1198 end = buf->r;
1199#endif
1200 }
1201 hdr_idx_init(idx);
1202 state = HTTP_MSG_RPVER;
1203 goto http_msg_rpver;
1204 }
1205
1206 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1207 goto http_msg_invalid;
1208
1209 if (unlikely(*ptr == '\n'))
1210 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1211 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1212 /* stop here */
1213
1214 http_msg_rpbefore_cr:
1215 case HTTP_MSG_RPBEFORE_CR:
1216 EXPECT_LF_HERE(ptr, http_msg_invalid);
1217 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1218 /* stop here */
1219
1220 http_msg_rpver:
1221 case HTTP_MSG_RPVER:
1222 case HTTP_MSG_RPVER_SP:
1223 case HTTP_MSG_RPCODE:
1224 case HTTP_MSG_RPCODE_SP:
1225 case HTTP_MSG_RPREASON:
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1226 ptr = (char *)http_parse_stsline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1227 &buf->lr, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1228 if (unlikely(!ptr))
1229 return;
1230
1231 /* we have a full response and we know that we have either a CR
1232 * or an LF at <ptr>.
1233 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1234 //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]1235 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1236
1237 msg->sol = ptr;
1238 if (likely(*ptr == '\r'))
1239 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1240 goto http_msg_rpline_end;
1241
1242 http_msg_rpline_end:
1243 case HTTP_MSG_RPLINE_END:
1244 /* msg->sol must point to the first of CR or LF. */
1245 EXPECT_LF_HERE(ptr, http_msg_invalid);
1246 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1247 /* stop here */
1248
1249 /*
1250 * Second, states that are specific to the request only
1251 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1252 http_msg_rqbefore:
1253 case HTTP_MSG_RQBEFORE:
1254 if (likely(HTTP_IS_TOKEN(*ptr))) {
1255 if (likely(ptr == buf->data)) {
1256 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1257 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1258 } else {
1259#if PARSE_PRESERVE_EMPTY_LINES
1260 /* only skip empty leading lines, don't remove them */
1261 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1262 msg->som = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1263#else
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1264 /* Remove empty leading lines, as recommended by
1265 * RFC2616. This takes a lot of time because we
1266 * must move all the buffer backwards, but this
1267 * is rarely needed. The method above will be
1268 * cleaner when we'll be able to start sending
1269 * the request from any place in the buffer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1270 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1271 buf->lr = ptr;
1272 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1273 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1274 msg->sol = buf->data;
1275 ptr = buf->data;
1276 end = buf->r;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1277#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1278 }
Willy Tarreauf0d058e2007-01-25 12:03:42 +0100[diff] [blame]1279 /* we will need this when keep-alive will be supported
1280 hdr_idx_init(idx);
1281 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1282 state = HTTP_MSG_RQMETH;
1283 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1284 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1285
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1286 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1287 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1288
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1289 if (unlikely(*ptr == '\n'))
1290 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1291 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1292 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1293
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1294 http_msg_rqbefore_cr:
1295 case HTTP_MSG_RQBEFORE_CR:
1296 EXPECT_LF_HERE(ptr, http_msg_invalid);
1297 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1298 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1299
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1300 http_msg_rqmeth:
1301 case HTTP_MSG_RQMETH:
1302 case HTTP_MSG_RQMETH_SP:
1303 case HTTP_MSG_RQURI:
1304 case HTTP_MSG_RQURI_SP:
1305 case HTTP_MSG_RQVER:
1306 ptr = (char *)http_parse_reqline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1307 &buf->lr, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1308 if (unlikely(!ptr))
1309 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1310
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1311 /* we have a full request and we know that we have either a CR
1312 * or an LF at <ptr>.
1313 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1314 //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]1315 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1316
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1317 msg->sol = ptr;
1318 if (likely(*ptr == '\r'))
1319 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1320 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1321
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1322 http_msg_rqline_end:
1323 case HTTP_MSG_RQLINE_END:
1324 /* check for HTTP/0.9 request : no version information available.
1325 * msg->sol must point to the first of CR or LF.
1326 */
1327 if (unlikely(msg->sl.rq.v_l == 0))
1328 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1329
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1330 EXPECT_LF_HERE(ptr, http_msg_invalid);
1331 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1332 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1333
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1334 /*
1335 * Common states below
1336 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1337 http_msg_hdr_first:
1338 case HTTP_MSG_HDR_FIRST:
1339 msg->sol = ptr;
1340 if (likely(!HTTP_IS_CRLF(*ptr))) {
1341 goto http_msg_hdr_name;
1342 }
1343
1344 if (likely(*ptr == '\r'))
1345 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1346 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1347
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1348 http_msg_hdr_name:
1349 case HTTP_MSG_HDR_NAME:
1350 /* assumes msg->sol points to the first char */
1351 if (likely(HTTP_IS_TOKEN(*ptr)))
1352 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1353
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1354 if (likely(*ptr == ':')) {
1355 msg->col = ptr - buf->data;
1356 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
1357 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1358
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1359 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1360
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1361 http_msg_hdr_l1_sp:
1362 case HTTP_MSG_HDR_L1_SP:
1363 /* assumes msg->sol points to the first char and msg->col to the colon */
1364 if (likely(HTTP_IS_SPHT(*ptr)))
1365 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]1366
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1367 /* header value can be basically anything except CR/LF */
1368 msg->sov = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1369
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1370 if (likely(!HTTP_IS_CRLF(*ptr))) {
1371 goto http_msg_hdr_val;
1372 }
1373
1374 if (likely(*ptr == '\r'))
1375 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1376 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1377
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1378 http_msg_hdr_l1_lf:
1379 case HTTP_MSG_HDR_L1_LF:
1380 EXPECT_LF_HERE(ptr, http_msg_invalid);
1381 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]1382
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1383 http_msg_hdr_l1_lws:
1384 case HTTP_MSG_HDR_L1_LWS:
1385 if (likely(HTTP_IS_SPHT(*ptr))) {
1386 /* replace HT,CR,LF with spaces */
1387 for (; buf->data+msg->sov < ptr; msg->sov++)
1388 buf->data[msg->sov] = ' ';
1389 goto http_msg_hdr_l1_sp;
1390 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1391 /* we had a header consisting only in spaces ! */
1392 msg->eol = buf->data + msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1393 goto http_msg_complete_header;
1394
1395 http_msg_hdr_val:
1396 case HTTP_MSG_HDR_VAL:
1397 /* assumes msg->sol points to the first char, msg->col to the
1398 * colon, and msg->sov points to the first character of the
1399 * value.
1400 */
1401 if (likely(!HTTP_IS_CRLF(*ptr)))
1402 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1403
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1404 msg->eol = ptr;
1405 /* Note: we could also copy eol into ->eoh so that we have the
1406 * real header end in case it ends with lots of LWS, but is this
1407 * really needed ?
1408 */
1409 if (likely(*ptr == '\r'))
1410 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1411 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1412
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1413 http_msg_hdr_l2_lf:
1414 case HTTP_MSG_HDR_L2_LF:
1415 EXPECT_LF_HERE(ptr, http_msg_invalid);
1416 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]1417
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1418 http_msg_hdr_l2_lws:
1419 case HTTP_MSG_HDR_L2_LWS:
1420 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1421 /* LWS: replace HT,CR,LF with spaces */
1422 for (; msg->eol < ptr; msg->eol++)
1423 *msg->eol = ' ';
1424 goto http_msg_hdr_val;
1425 }
1426 http_msg_complete_header:
1427 /*
1428 * It was a new header, so the last one is finished.
1429 * Assumes msg->sol points to the first char, msg->col to the
1430 * colon, msg->sov points to the first character of the value
1431 * and msg->eol to the first CR or LF so we know how the line
1432 * ends. We insert last header into the index.
1433 */
1434 /*
1435 fprintf(stderr,"registering %-2d bytes : ", msg->eol - msg->sol);
1436 write(2, msg->sol, msg->eol-msg->sol);
1437 fprintf(stderr,"\n");
1438 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1439
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1440 if (unlikely(hdr_idx_add(msg->eol - msg->sol, *msg->eol == '\r',
1441 idx, idx->tail) < 0))
1442 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1443
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1444 msg->sol = ptr;
1445 if (likely(!HTTP_IS_CRLF(*ptr))) {
1446 goto http_msg_hdr_name;
1447 }
1448
1449 if (likely(*ptr == '\r'))
1450 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1451 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1452
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1453 http_msg_last_lf:
1454 case HTTP_MSG_LAST_LF:
1455 /* Assumes msg->sol points to the first of either CR or LF */
1456 EXPECT_LF_HERE(ptr, http_msg_invalid);
1457 ptr++;
1458 buf->lr = ptr;
1459 msg->eoh = msg->sol - buf->data;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1460 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1461 return;
1462#ifdef DEBUG_FULL
1463 default:
1464 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1465 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1466#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1467 }
1468 http_msg_ood:
1469 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1470 msg->msg_state = state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1471 buf->lr = ptr;
1472 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1473
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1474 http_msg_invalid:
1475 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1476 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1477 return;
1478}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1479
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1480/*
1481 * manages the client FSM and its socket. BTW, it also tries to handle the
1482 * cookie. It returns 1 if a state has changed (and a resync may be needed),
1483 * 0 else.
1484 */
1485int process_cli(struct session *t)
1486{
1487 int s = t->srv_state;
1488 int c = t->cli_state;
1489 struct buffer *req = t->req;
1490 struct buffer *rep = t->rep;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1491
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1492 DPRINTF(stderr,"process_cli: c=%s s=%s set(r,w)=%d,%d exp(r,w)=%d.%d,%d.%d\n",
1493 cli_stnames[c], srv_stnames[s],
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1494 EV_FD_ISSET(t->cli_fd, DIR_RD), EV_FD_ISSET(t->cli_fd, DIR_WR),
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1495 req->rex.tv_sec, req->rex.tv_usec,
1496 rep->wex.tv_sec, rep->wex.tv_usec);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1497
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1498 if (c == CL_STHEADERS) {
1499 /*
1500 * Now parse the partial (or complete) lines.
1501 * We will check the request syntax, and also join multi-line
1502 * headers. An index of all the lines will be elaborated while
1503 * parsing.
1504 *
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1505 * For the parsing, we use a 28 states FSM.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1506 *
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1507 * Here is the information we currently have :
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1508 * req->data + req->som = beginning of request
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1509 * req->data + req->eoh = end of processed headers / start of current one
1510 * req->data + req->eol = end of current header or line (LF or CRLF)
1511 * req->lr = first non-visited byte
1512 * req->r = end of data
1513 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1514
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1515 int cur_idx;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1516 struct http_txn *txn = &t->txn;
1517 struct http_msg *msg = &txn->req;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1518 struct proxy *cur_proxy;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1519
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1520 if (likely(req->lr < req->r))
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1521 http_msg_analyzer(req, msg, &txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1522
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1523 /* 1: we might have to print this header in debug mode */
1524 if (unlikely((global.mode & MODE_DEBUG) &&
1525 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1526 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1527 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1528
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1529 sol = req->data + msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1530 eol = sol + msg->sl.rq.l;
1531 debug_hdr("clireq", t, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1532
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1533 sol += hdr_idx_first_pos(&txn->hdr_idx);
1534 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1535
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1536 while (cur_idx) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1537 eol = sol + txn->hdr_idx.v[cur_idx].len;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1538 debug_hdr("clihdr", t, sol, eol);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1539 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
1540 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1541 }
1542 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1543
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1544
1545 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1546 * Now we quickly check if we have found a full valid request.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1547 * If not so, we check the FD and buffer states before leaving.
1548 * A full request is indicated by the fact that we have seen
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1549 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
1550 * requests are checked first.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1551 *
1552 */
1553
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1554 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1555 /*
1556 * First, let's catch bad requests.
1557 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1558 if (unlikely(msg->msg_state == HTTP_MSG_ERROR))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1559 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1560
1561 /* 1: Since we are in header mode, if there's no space
1562 * left for headers, we won't be able to free more
1563 * later, so the session will never terminate. We
1564 * must terminate it now.
1565 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1566 if (unlikely(req->l >= req->rlim - req->data)) {
1567 /* FIXME: check if URI is set and return Status
1568 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1569 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1570 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1571 }
1572
1573 /* 2: have we encountered a read error or a close ? */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1574 else if (unlikely(req->flags & (BF_READ_ERROR | BF_READ_NULL))) {
1575 /* read error, or last read : give up. */
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]1576 buffer_shutr(req);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1577 fd_delete(t->cli_fd);
1578 t->cli_state = CL_STCLOSE;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]1579 t->fe->failed_req++;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1580 if (!(t->flags & SN_ERR_MASK))
1581 t->flags |= SN_ERR_CLICL;
1582 if (!(t->flags & SN_FINST_MASK))
1583 t->flags |= SN_FINST_R;
1584 return 1;
1585 }
1586
1587 /* 3: has the read timeout expired ? */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]1588 else if (unlikely(tv_isle(&req->rex, &now))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1589 /* read timeout : give up with an error message. */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1590 txn->status = 408;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1591 client_retnclose(t, error_message(t, HTTP_ERR_408));
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]1592 t->fe->failed_req++;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1593 if (!(t->flags & SN_ERR_MASK))
1594 t->flags |= SN_ERR_CLITO;
1595 if (!(t->flags & SN_FINST_MASK))
1596 t->flags |= SN_FINST_R;
1597 return 1;
1598 }
1599
1600 /* 4: do we need to re-enable the read socket ? */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]1601 else if (unlikely(EV_FD_COND_S(t->cli_fd, DIR_RD))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1602 /* fd in DIR_RD was disabled, perhaps because of a previous buffer
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1603 * full. We cannot loop here since stream_sock_read will disable it only if
1604 * req->l == rlim-data
1605 */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]1606 if (!tv_add_ifset(&req->rex, &now, &t->fe->clitimeout))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1607 tv_eternity(&req->rex);
1608 }
1609 return t->cli_state != CL_STHEADERS;
1610 }
1611
1612
1613 /****************************************************************
1614 * More interesting part now : we know that we have a complete *
1615 * request which at least looks like HTTP. We have an indicator *
1616 * of each header's length, so we can parse them quickly. *
1617 ****************************************************************/
1618
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1619 /* ensure we keep this pointer to the beginning of the message */
1620 msg->sol = req->data + msg->som;
1621
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1622 /*
1623 * 1: identify the method
1624 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1625 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1626
1627 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1628 * 2: check if the URI matches the monitor_uri.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1629 * We have to do this for every request which gets in, because
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1630 * the monitor-uri is defined by the frontend.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1631 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1632 if (unlikely((t->fe->monitor_uri_len != 0) &&
1633 (t->fe->monitor_uri_len == msg->sl.rq.u_l) &&
1634 !memcmp(&req->data[msg->sl.rq.u],
1635 t->fe->monitor_uri,
1636 t->fe->monitor_uri_len))) {
1637 /*
1638 * We have found the monitor URI
1639 */
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1640 struct acl_cond *cond;
1641 cur_proxy = t->fe;
1642
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1643 t->flags |= SN_MONITOR;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1644
1645 /* Check if we want to fail this monitor request or not */
1646 list_for_each_entry(cond, &cur_proxy->mon_fail_cond, list) {
1647 int ret = acl_exec_cond(cond, cur_proxy, t, txn, ACL_DIR_REQ);
1648 if (cond->pol == ACL_COND_UNLESS)
1649 ret = !ret;
1650
1651 if (ret) {
1652 /* we fail this request, let's return 503 service unavail */
1653 txn->status = 503;
1654 client_retnclose(t, error_message(t, HTTP_ERR_503));
1655 goto return_prx_cond;
1656 }
1657 }
1658
1659 /* nothing to fail, let's reply normaly */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1660 txn->status = 200;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1661 client_retnclose(t, &http_200_chunk);
1662 goto return_prx_cond;
1663 }
1664
1665 /*
1666 * 3: Maybe we have to copy the original REQURI for the logs ?
1667 * Note: we cannot log anymore if the request has been
1668 * classified as invalid.
1669 */
1670 if (unlikely(t->logs.logwait & LW_REQ)) {
1671 /* we have a complete HTTP request that we must log */
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]1672 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1673 int urilen = msg->sl.rq.l;
1674
1675 if (urilen >= REQURI_LEN)
1676 urilen = REQURI_LEN - 1;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1677 memcpy(txn->uri, &req->data[msg->som], urilen);
1678 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1679
1680 if (!(t->logs.logwait &= ~LW_REQ))
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1681 http_sess_log(t);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1682 } else {
1683 Alert("HTTP logging : out of memory.\n");
1684 }
1685 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1686
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1687
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1688 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
1689 if (unlikely(msg->sl.rq.v_l == 0)) {
1690 int delta;
1691 char *cur_end;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1692 msg->sol = req->data + msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1693 cur_end = msg->sol + msg->sl.rq.l;
1694 delta = 0;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1695
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1696 if (msg->sl.rq.u_l == 0) {
1697 /* if no URI was set, add "/" */
1698 delta = buffer_replace2(req, cur_end, cur_end, " /", 2);
1699 cur_end += delta;
1700 msg->eoh += delta;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1701 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1702 /* add HTTP version */
1703 delta = buffer_replace2(req, cur_end, cur_end, " HTTP/1.0\r\n", 11);
1704 msg->eoh += delta;
1705 cur_end += delta;
1706 cur_end = (char *)http_parse_reqline(msg, req->data,
1707 HTTP_MSG_RQMETH,
1708 msg->sol, cur_end + 1,
1709 NULL, NULL);
1710 if (unlikely(!cur_end))
1711 goto return_bad_req;
1712
1713 /* we have a full HTTP/1.0 request now and we know that
1714 * we have either a CR or an LF at <ptr>.
1715 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1716 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1717 }
1718
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1719
1720 /* 5: we may need to capture headers */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1721 if (unlikely((t->logs.logwait & LW_REQHDR) && t->fe->req_cap))
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1722 capture_headers(req->data + msg->som, &txn->hdr_idx,
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1723 txn->req.cap, t->fe->req_cap);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1724
1725 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1726 * 6: we will have to evaluate the filters.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1727 * As opposed to version 1.2, now they will be evaluated in the
1728 * filters order and not in the header order. This means that
1729 * each filter has to be validated among all headers.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1730 *
1731 * We can now check whether we want to switch to another
1732 * backend, in which case we will re-check the backend's
1733 * filters and various options. In order to support 3-level
1734 * switching, here's how we should proceed :
1735 *
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1736 * a) run be.
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1737 * if (switch) then switch ->be to the new backend.
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1738 * b) run be if (be != fe).
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1739 * There cannot be any switch from there, so ->be cannot be
1740 * changed anymore.
1741 *
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1742 * => filters always apply to ->be, then ->be may change.
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1743 *
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1744 * The response path will be able to apply either ->be, or
1745 * ->be then ->fe filters in order to match the reverse of
1746 * the forward sequence.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1747 */
1748
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1749 do {
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1750 struct acl_cond *cond;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1751 struct proxy *rule_set = t->be;
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1752 cur_proxy = t->be;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1753
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1754 /* first check whether we have some ACLs set to block this request */
1755 list_for_each_entry(cond, &cur_proxy->block_cond, list) {
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]1756 int ret = acl_exec_cond(cond, cur_proxy, t, txn, ACL_DIR_REQ);
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1757 if (cond->pol == ACL_COND_UNLESS)
1758 ret = !ret;
1759
1760 if (ret) {
1761 txn->status = 403;
1762 /* let's log the request time */
1763 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
1764 client_retnclose(t, error_message(t, HTTP_ERR_403));
1765 goto return_prx_cond;
1766 }
1767 }
1768
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1769 /* try headers filters */
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1770 if (rule_set->req_exp != NULL) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1771 if (apply_filters_to_request(t, req, rule_set->req_exp) < 0)
1772 goto return_bad_req;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1773 }
1774
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1775 if (!(t->flags & SN_BE_ASSIGNED) && (t->be != cur_proxy)) {
1776 /* to ensure correct connection accounting on
1777 * the backend, we count the connection for the
1778 * one managing the queue.
1779 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1780 t->be->beconn++;
1781 if (t->be->beconn > t->be->beconn_max)
1782 t->be->beconn_max = t->be->beconn;
1783 t->be->cum_beconn++;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1784 t->flags |= SN_BE_ASSIGNED;
1785 }
1786
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1787 /* has the request been denied ? */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]1788 if (txn->flags & TX_CLDENY) {
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1789 /* no need to go further */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1790 txn->status = 403;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1791 /* let's log the request time */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]1792 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1793 client_retnclose(t, error_message(t, HTTP_ERR_403));
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1794 goto return_prx_cond;
1795 }
1796
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1797 /* We might have to check for "Connection:" */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1798 if (((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1799 !(t->flags & SN_CONN_CLOSED)) {
1800 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1801 int cur_idx, old_idx, delta, val;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1802 struct hdr_idx_elem *cur_hdr;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1803
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1804 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1805 old_idx = 0;
1806
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1807 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
1808 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1809 cur_ptr = cur_next;
1810 cur_end = cur_ptr + cur_hdr->len;
1811 cur_next = cur_end + cur_hdr->cr + 1;
1812
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1813 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
1814 if (val) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1815 /* 3 possibilities :
1816 * - we have already set Connection: close,
1817 * so we remove this line.
1818 * - we have not yet set Connection: close,
1819 * but this line indicates close. We leave
1820 * it untouched and set the flag.
1821 * - we have not yet set Connection: close,
1822 * and this line indicates non-close. We
1823 * replace it.
1824 */
1825 if (t->flags & SN_CONN_CLOSED) {
1826 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1827 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1828 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1829 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
1830 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1831 cur_hdr->len = 0;
1832 } else {
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1833 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
1834 delta = buffer_replace2(req, cur_ptr + val, cur_end,
1835 "close", 5);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1836 cur_next += delta;
1837 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1838 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1839 }
1840 t->flags |= SN_CONN_CLOSED;
1841 }
1842 }
1843 old_idx = cur_idx;
1844 }
Willy Tarreauf2f0ee82007-03-30 12:02:43 +0200[diff] [blame]1845 }
1846 /* add request headers from the rule sets in the same order */
1847 for (cur_idx = 0; cur_idx < rule_set->nb_reqadd; cur_idx++) {
1848 if (unlikely(http_header_add_tail(req,
1849 &txn->req,
1850 &txn->hdr_idx,
1851 rule_set->req_add[cur_idx])) < 0)
1852 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1853 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]1854
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1855 /* check if stats URI was requested, and if an auth is needed */
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]1856 if (rule_set->uri_auth != NULL &&
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1857 (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)) {
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]1858 /* we have to check the URI and auth for this request */
1859 if (stats_check_uri_auth(t, rule_set))
1860 return 1;
1861 }
1862
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]1863 /* now check whether we have some switching rules for this request */
1864 if (!(t->flags & SN_BE_ASSIGNED)) {
1865 struct switching_rule *rule;
1866
1867 list_for_each_entry(rule, &cur_proxy->switching_rules, list) {
1868 int ret;
1869
1870 ret = acl_exec_cond(rule->cond, cur_proxy, t, txn, ACL_DIR_REQ);
1871 if (cond->pol == ACL_COND_UNLESS)
1872 ret = !ret;
1873
1874 if (ret) {
1875 t->be = rule->be.backend;
1876 t->be->beconn++;
1877 if (t->be->beconn > t->be->beconn_max)
1878 t->be->beconn_max = t->be->beconn;
1879 t->be->cum_beconn++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]1880
1881 /* assign new parameters to the session from the new backend */
1882 t->rep->rto = t->req->wto = t->be->srvtimeout;
1883 t->req->cto = t->be->contimeout;
1884 t->conn_retries = t->be->conn_retries;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]1885 t->flags |= SN_BE_ASSIGNED;
1886 break;
1887 }
1888 }
1889 }
1890
Willy Tarreau5fdfb912007-01-01 23:11:07 +0100[diff] [blame]1891 if (!(t->flags & SN_BE_ASSIGNED) && cur_proxy->defbe.be) {
1892 /* No backend was set, but there was a default
1893 * backend set in the frontend, so we use it and
1894 * loop again.
1895 */
1896 t->be = cur_proxy->defbe.be;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1897 t->be->beconn++;
1898 if (t->be->beconn > t->be->beconn_max)
1899 t->be->beconn_max = t->be->beconn;
1900 t->be->cum_beconn++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]1901
1902 /* assign new parameters to the session from the new backend */
1903 t->rep->rto = t->req->wto = t->be->srvtimeout;
1904 t->req->cto = t->be->contimeout;
1905 t->conn_retries = t->be->conn_retries;
Willy Tarreau5fdfb912007-01-01 23:11:07 +0100[diff] [blame]1906 t->flags |= SN_BE_ASSIGNED;
1907 }
1908 } while (t->be != cur_proxy); /* we loop only if t->be has changed */
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1909
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1910
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1911 if (!(t->flags & SN_BE_ASSIGNED)) {
1912 /* To ensure correct connection accounting on
1913 * the backend, we count the connection for the
1914 * one managing the queue.
1915 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1916 t->be->beconn++;
1917 if (t->be->beconn > t->be->beconn_max)
1918 t->be->beconn_max = t->be->beconn;
1919 t->be->cum_beconn++;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1920 t->flags |= SN_BE_ASSIGNED;
1921 }
1922
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1923 /*
1924 * Right now, we know that we have processed the entire headers
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1925 * and that unwanted requests have been filtered out. We can do
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1926 * whatever we want with the remaining request. Also, now we
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1927 * may have separate values for ->fe, ->be.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1928 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1929
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1930 /*
1931 * If HTTP PROXY is set we simply get remote server address
1932 * parsing incoming request.
1933 */
1934 if ((t->be->options & PR_O_HTTP_PROXY) && !(t->flags & SN_ADDR_SET)) {
1935 url2sa(req->data + msg->sl.rq.u, msg->sl.rq.u_l, &t->srv_addr);
1936 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1937
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1938 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1939 * 7: the appsession cookie was looked up very early in 1.2,
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1940 * so let's do the same now.
1941 */
1942
1943 /* It needs to look into the URI */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1944 if (t->be->appsession_name) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1945 get_srv_from_appsession(t, &req->data[msg->som], msg->sl.rq.l);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1946 }
1947
1948
1949 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1950 * 8: Now we can work with the cookies.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1951 * Note that doing so might move headers in the request, but
1952 * the fields will stay coherent and the URI will not move.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1953 * This should only be performed in the backend.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1954 */
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]1955 if ((t->be->cookie_name || t->be->appsession_name || t->be->capture_name)
1956 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1957 manage_client_side_cookies(t, req);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1958
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1959
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1960 /*
Willy Tarreaubb046ac2007-03-03 19:17:03 +0100[diff] [blame]1961 * 9: add X-Forwarded-For if either the frontend or the backend
1962 * asks for it.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1963 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1964 if ((t->fe->options | t->be->options) & PR_O_FWDFOR) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1965 if (t->cli_addr.ss_family == AF_INET) {
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]1966 /* Add an X-Forwarded-For header unless the source IP is
1967 * in the 'except' network range.
1968 */
1969 if ((!t->fe->except_mask.s_addr ||
1970 (((struct sockaddr_in *)&t->cli_addr)->sin_addr.s_addr & t->fe->except_mask.s_addr)
1971 != t->fe->except_net.s_addr) &&
1972 (!t->be->except_mask.s_addr ||
1973 (((struct sockaddr_in *)&t->cli_addr)->sin_addr.s_addr & t->be->except_mask.s_addr)
1974 != t->be->except_net.s_addr)) {
1975 int len;
1976 unsigned char *pn;
1977 pn = (unsigned char *)&((struct sockaddr_in *)&t->cli_addr)->sin_addr;
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1978
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]1979 len = sprintf(trash, "X-Forwarded-For: %d.%d.%d.%d",
1980 pn[0], pn[1], pn[2], pn[3]);
1981
1982 if (unlikely(http_header_add_tail2(req, &txn->req,
1983 &txn->hdr_idx, trash, len)) < 0)
1984 goto return_bad_req;
1985 }
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1986 }
1987 else if (t->cli_addr.ss_family == AF_INET6) {
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]1988 /* FIXME: for the sake of completeness, we should also support
1989 * 'except' here, although it is mostly useless in this case.
1990 */
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1991 int len;
1992 char pn[INET6_ADDRSTRLEN];
1993 inet_ntop(AF_INET6,
1994 (const void *)&((struct sockaddr_in6 *)(&t->cli_addr))->sin6_addr,
1995 pn, sizeof(pn));
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]1996 len = sprintf(trash, "X-Forwarded-For: %s", pn);
1997 if (unlikely(http_header_add_tail2(req, &txn->req,
1998 &txn->hdr_idx, trash, len)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1999 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2000 }
2001 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2002
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2003 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2004 * 10: add "Connection: close" if needed and not yet set.
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2005 * 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]2006 */
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2007 if (!(t->flags & SN_CONN_CLOSED) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2008 ((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE)) {
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2009 if ((unlikely(msg->sl.rq.v_l != 8) ||
2010 unlikely(req->data[msg->som + msg->sl.rq.v + 7] != '0')) &&
2011 unlikely(http_header_add_tail2(req, &txn->req, &txn->hdr_idx,
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2012 "Connection: close", 17)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2013 goto return_bad_req;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2014 t->flags |= SN_CONN_CLOSED;
Willy Tarreaue15d9132006-12-14 22:26:42 +0100[diff] [blame]2015 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2016
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2017 /*************************************************************
2018 * OK, that's finished for the headers. We have done what we *
2019 * could. Let's switch to the DATA state. *
2020 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2021
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2022 t->cli_state = CL_STDATA;
2023 req->rlim = req->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2024
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2025 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2026
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]2027 if (!tv_isset(&t->fe->clitimeout) ||
2028 (t->srv_state < SV_STDATA && tv_isset(&t->be->srvtimeout))) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2029 /* If the client has no timeout, or if the server is not ready yet,
2030 * and we know for sure that it can expire, then it's cleaner to
2031 * disable the timeout on the client side so that too low values
2032 * cannot make the sessions abort too early.
2033 *
2034 * FIXME-20050705: the server needs a way to re-enable this time-out
2035 * when it switches its state, otherwise a client can stay connected
2036 * indefinitely. This now seems to be OK.
2037 */
2038 tv_eternity(&req->rex);
2039 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2040
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2041 /* When a connection is tarpitted, we use the queue timeout for the
2042 * tarpit delay, which currently happens to be the server's connect
2043 * timeout. If unset, then set it to zero because we really want it
2044 * to expire at one moment.
2045 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2046 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2047 t->req->l = 0;
2048 /* flush the request so that we can drop the connection early
2049 * if the client closes first.
2050 */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2051 if (!tv_add_ifset(&req->cex, &now, &t->be->contimeout))
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]2052 req->cex = now;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2053 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2054
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2055 /* OK let's go on with the BODY now */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2056 goto process_data;
2057
2058 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]2059 txn->req.msg_state = HTTP_MSG_ERROR;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2060 txn->status = 400;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2061 client_retnclose(t, error_message(t, HTTP_ERR_400));
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]2062 t->fe->failed_req++;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2063 return_prx_cond:
2064 if (!(t->flags & SN_ERR_MASK))
2065 t->flags |= SN_ERR_PRXCOND;
2066 if (!(t->flags & SN_FINST_MASK))
2067 t->flags |= SN_FINST_R;
2068 return 1;
2069
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2070 }
2071 else if (c == CL_STDATA) {
2072 process_data:
2073 /* FIXME: this error handling is partly buggy because we always report
2074 * a 'DATA' phase while we don't know if the server was in IDLE, CONN
2075 * or HEADER phase. BTW, it's not logical to expire the client while
2076 * we're waiting for the server to connect.
2077 */
2078 /* read or write error */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2079 if (rep->flags & BF_WRITE_ERROR || req->flags & BF_READ_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2080 buffer_shutr(req);
2081 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2082 fd_delete(t->cli_fd);
2083 t->cli_state = CL_STCLOSE;
2084 if (!(t->flags & SN_ERR_MASK))
2085 t->flags |= SN_ERR_CLICL;
2086 if (!(t->flags & SN_FINST_MASK)) {
2087 if (t->pend_pos)
2088 t->flags |= SN_FINST_Q;
2089 else if (s == SV_STCONN)
2090 t->flags |= SN_FINST_C;
2091 else
2092 t->flags |= SN_FINST_D;
2093 }
2094 return 1;
2095 }
2096 /* last read, or end of server write */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2097 else if (req->flags & BF_READ_NULL || s == SV_STSHUTW || s == SV_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2098 EV_FD_CLR(t->cli_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2099 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2100 t->cli_state = CL_STSHUTR;
2101 return 1;
2102 }
2103 /* last server read and buffer empty */
2104 else if ((s == SV_STSHUTR || s == SV_STCLOSE) && (rep->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2105 EV_FD_CLR(t->cli_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2106 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2107 shutdown(t->cli_fd, SHUT_WR);
2108 /* We must ensure that the read part is still alive when switching
2109 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2110 EV_FD_SET(t->cli_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2111 tv_add_ifset(&req->rex, &now, &t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2112 t->cli_state = CL_STSHUTW;
2113 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2114 return 1;
2115 }
2116 /* read timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2117 else if (tv_isle(&req->rex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2118 EV_FD_CLR(t->cli_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2119 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2120 t->cli_state = CL_STSHUTR;
2121 if (!(t->flags & SN_ERR_MASK))
2122 t->flags |= SN_ERR_CLITO;
2123 if (!(t->flags & SN_FINST_MASK)) {
2124 if (t->pend_pos)
2125 t->flags |= SN_FINST_Q;
2126 else if (s == SV_STCONN)
2127 t->flags |= SN_FINST_C;
2128 else
2129 t->flags |= SN_FINST_D;
2130 }
2131 return 1;
2132 }
2133 /* write timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2134 else if (tv_isle(&rep->wex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2135 EV_FD_CLR(t->cli_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2136 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2137 shutdown(t->cli_fd, SHUT_WR);
2138 /* We must ensure that the read part is still alive when switching
2139 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2140 EV_FD_SET(t->cli_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2141 tv_add_ifset(&req->rex, &now, &t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2142
2143 t->cli_state = CL_STSHUTW;
2144 if (!(t->flags & SN_ERR_MASK))
2145 t->flags |= SN_ERR_CLITO;
2146 if (!(t->flags & SN_FINST_MASK)) {
2147 if (t->pend_pos)
2148 t->flags |= SN_FINST_Q;
2149 else if (s == SV_STCONN)
2150 t->flags |= SN_FINST_C;
2151 else
2152 t->flags |= SN_FINST_D;
2153 }
2154 return 1;
2155 }
2156
2157 if (req->l >= req->rlim - req->data) {
2158 /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2159 if (EV_FD_COND_C(t->cli_fd, DIR_RD)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2160 /* stop reading until we get some space */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2161 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2162 }
2163 } else {
2164 /* there's still some space in the buffer */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2165 if (EV_FD_COND_S(t->cli_fd, DIR_RD)) {
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]2166 if (!tv_isset(&t->fe->clitimeout) ||
2167 (t->srv_state < SV_STDATA && tv_isset(&t->be->srvtimeout)))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2168 /* If the client has no timeout, or if the server not ready yet, and we
2169 * know for sure that it can expire, then it's cleaner to disable the
2170 * timeout on the client side so that too low values cannot make the
2171 * sessions abort too early.
2172 */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2173 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2174 else
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]2175 tv_add(&req->rex, &now, &t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2176 }
2177 }
2178
2179 if ((rep->l == 0) ||
2180 ((s < SV_STDATA) /* FIXME: this may be optimized && (rep->w == rep->h)*/)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2181 if (EV_FD_COND_C(t->cli_fd, DIR_WR)) {
2182 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2183 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2184 }
2185 } else {
2186 /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2187 if (EV_FD_COND_S(t->cli_fd, DIR_WR)) {
2188 /* restart writing */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2189 if (tv_add_ifset(&rep->wex, &now, &t->fe->clitimeout)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2190 /* FIXME: to prevent the client from expiring read timeouts during writes,
2191 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2192 req->rex = rep->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2193 }
2194 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2195 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2196 }
2197 }
2198 return 0; /* other cases change nothing */
2199 }
2200 else if (c == CL_STSHUTR) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2201 if (rep->flags & BF_WRITE_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2202 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2203 fd_delete(t->cli_fd);
2204 t->cli_state = CL_STCLOSE;
2205 if (!(t->flags & SN_ERR_MASK))
2206 t->flags |= SN_ERR_CLICL;
2207 if (!(t->flags & SN_FINST_MASK)) {
2208 if (t->pend_pos)
2209 t->flags |= SN_FINST_Q;
2210 else if (s == SV_STCONN)
2211 t->flags |= SN_FINST_C;
2212 else
2213 t->flags |= SN_FINST_D;
2214 }
2215 return 1;
2216 }
2217 else if ((s == SV_STSHUTR || s == SV_STCLOSE) && (rep->l == 0)
2218 && !(t->flags & SN_SELF_GEN)) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2219 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2220 fd_delete(t->cli_fd);
2221 t->cli_state = CL_STCLOSE;
2222 return 1;
2223 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2224 else if (tv_isle(&rep->wex, &now)) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2225 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2226 fd_delete(t->cli_fd);
2227 t->cli_state = CL_STCLOSE;
2228 if (!(t->flags & SN_ERR_MASK))
2229 t->flags |= SN_ERR_CLITO;
2230 if (!(t->flags & SN_FINST_MASK)) {
2231 if (t->pend_pos)
2232 t->flags |= SN_FINST_Q;
2233 else if (s == SV_STCONN)
2234 t->flags |= SN_FINST_C;
2235 else
2236 t->flags |= SN_FINST_D;
2237 }
2238 return 1;
2239 }
2240
2241 if (t->flags & SN_SELF_GEN) {
2242 produce_content(t);
2243 if (rep->l == 0) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2244 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2245 fd_delete(t->cli_fd);
2246 t->cli_state = CL_STCLOSE;
2247 return 1;
2248 }
2249 }
2250
2251 if ((rep->l == 0)
2252 || ((s == SV_STHEADERS) /* FIXME: this may be optimized && (rep->w == rep->h)*/)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2253 if (EV_FD_COND_C(t->cli_fd, DIR_WR)) {
2254 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2255 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2256 }
2257 } else {
2258 /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2259 if (EV_FD_COND_S(t->cli_fd, DIR_WR)) {
2260 /* restart writing */
Willy Tarreau33014d02007-06-03 15:25:37 +0200[diff] [blame]2261 if (!tv_add_ifset(&rep->wex, &now, &t->fe->clitimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2262 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2263 }
2264 }
2265 return 0;
2266 }
2267 else if (c == CL_STSHUTW) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2268 if (req->flags & BF_READ_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2269 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2270 fd_delete(t->cli_fd);
2271 t->cli_state = CL_STCLOSE;
2272 if (!(t->flags & SN_ERR_MASK))
2273 t->flags |= SN_ERR_CLICL;
2274 if (!(t->flags & SN_FINST_MASK)) {
2275 if (t->pend_pos)
2276 t->flags |= SN_FINST_Q;
2277 else if (s == SV_STCONN)
2278 t->flags |= SN_FINST_C;
2279 else
2280 t->flags |= SN_FINST_D;
2281 }
2282 return 1;
2283 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2284 else if (req->flags & BF_READ_NULL || s == SV_STSHUTW || s == SV_STCLOSE) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2285 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2286 fd_delete(t->cli_fd);
2287 t->cli_state = CL_STCLOSE;
2288 return 1;
2289 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2290 else if (tv_isle(&req->rex, &now)) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2291 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2292 fd_delete(t->cli_fd);
2293 t->cli_state = CL_STCLOSE;
2294 if (!(t->flags & SN_ERR_MASK))
2295 t->flags |= SN_ERR_CLITO;
2296 if (!(t->flags & SN_FINST_MASK)) {
2297 if (t->pend_pos)
2298 t->flags |= SN_FINST_Q;
2299 else if (s == SV_STCONN)
2300 t->flags |= SN_FINST_C;
2301 else
2302 t->flags |= SN_FINST_D;
2303 }
2304 return 1;
2305 }
2306 else if (req->l >= req->rlim - req->data) {
2307 /* no room to read more data */
2308
2309 /* FIXME-20050705: is it possible for a client to maintain a session
2310 * after the timeout by sending more data after it receives a close ?
2311 */
2312
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2313 if (EV_FD_COND_C(t->cli_fd, DIR_RD)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2314 /* stop reading until we get some space */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2315 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2316 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2317 }
2318 } else {
2319 /* there's still some space in the buffer */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2320 if (EV_FD_COND_S(t->cli_fd, DIR_RD)) {
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2321 if (!tv_add_ifset(&req->rex, &now, &t->fe->clitimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2322 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2323 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2324 }
2325 }
2326 return 0;
2327 }
2328 else { /* CL_STCLOSE: nothing to do */
2329 if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
2330 int len;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2331 len = sprintf(trash, "%08x:%s.clicls[%04x:%04x]\n", t->uniq_id, t->be->id, (unsigned short)t->cli_fd, (unsigned short)t->srv_fd);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2332 write(1, trash, len);
2333 }
2334 return 0;
2335 }
2336 return 0;
2337}
2338
2339
2340/*
2341 * manages the server FSM and its socket. It returns 1 if a state has changed
2342 * (and a resync may be needed), 0 else.
2343 */
2344int process_srv(struct session *t)
2345{
2346 int s = t->srv_state;
2347 int c = t->cli_state;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2348 struct http_txn *txn = &t->txn;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2349 struct buffer *req = t->req;
2350 struct buffer *rep = t->rep;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2351 int conn_err;
2352
2353#ifdef DEBUG_FULL
2354 fprintf(stderr,"process_srv: c=%s, s=%s\n", cli_stnames[c], srv_stnames[s]);
2355#endif
Willy Tarreauee991362007-05-14 14:37:50 +0200[diff] [blame]2356
2357#if 0
2358 fprintf(stderr,"%s:%d fe->clito=%d.%d, fe->conto=%d.%d, fe->srvto=%d.%d\n",
2359 __FUNCTION__, __LINE__,
2360 t->fe->clitimeout.tv_sec, t->fe->clitimeout.tv_usec,
2361 t->fe->contimeout.tv_sec, t->fe->contimeout.tv_usec,
2362 t->fe->srvtimeout.tv_sec, t->fe->srvtimeout.tv_usec);
2363 fprintf(stderr,"%s:%d be->clito=%d.%d, be->conto=%d.%d, be->srvto=%d.%d\n",
2364 __FUNCTION__, __LINE__,
2365 t->be->clitimeout.tv_sec, t->be->clitimeout.tv_usec,
2366 t->be->contimeout.tv_sec, t->be->contimeout.tv_usec,
2367 t->be->srvtimeout.tv_sec, t->be->srvtimeout.tv_usec);
2368
2369 fprintf(stderr,"%s:%d req->cto=%d.%d, req->rto=%d.%d, req->wto=%d.%d\n",
2370 __FUNCTION__, __LINE__,
2371 req->cto.tv_sec, req->cto.tv_usec,
2372 req->rto.tv_sec, req->rto.tv_usec,
2373 req->wto.tv_sec, req->wto.tv_usec);
2374
2375 fprintf(stderr,"%s:%d rep->cto=%d.%d, rep->rto=%d.%d, rep->wto=%d.%d\n",
2376 __FUNCTION__, __LINE__,
2377 rep->cto.tv_sec, rep->cto.tv_usec,
2378 rep->rto.tv_sec, rep->rto.tv_usec,
2379 rep->wto.tv_sec, rep->wto.tv_usec);
2380#endif
2381
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2382 //fprintf(stderr,"process_srv: c=%d, s=%d, cr=%d, cw=%d, sr=%d, sw=%d\n", c, s,
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2383 //EV_FD_ISSET(t->cli_fd, DIR_RD), EV_FD_ISSET(t->cli_fd, DIR_WR),
2384 //EV_FD_ISSET(t->srv_fd, DIR_RD), EV_FD_ISSET(t->srv_fd, DIR_WR)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2385 //);
2386 if (s == SV_STIDLE) {
2387 if (c == CL_STHEADERS)
2388 return 0; /* stay in idle, waiting for data to reach the client side */
2389 else if (c == CL_STCLOSE || c == CL_STSHUTW ||
2390 (c == CL_STSHUTR &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2391 (t->req->l == 0 || t->be->options & PR_O_ABRT_CLOSE))) { /* give up */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2392 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2393 if (t->pend_pos)
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2394 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2395 /* note that this must not return any error because it would be able to
2396 * overwrite the client_retnclose() output.
2397 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2398 if (txn->flags & TX_CLTARPIT)
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2399 srv_close_with_err(t, SN_ERR_CLICL, SN_FINST_T, 0, NULL);
Willy Tarreau08fa2e32006-09-03 10:47:37 +0200[diff] [blame]2400 else
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2401 srv_close_with_err(t, SN_ERR_CLICL, t->pend_pos ? SN_FINST_Q : SN_FINST_C, 0, NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2402
2403 return 1;
2404 }
2405 else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2406 if (txn->flags & TX_CLTARPIT) {
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2407 /* This connection is being tarpitted. The CLIENT side has
2408 * already set the connect expiration date to the right
2409 * timeout. We just have to check that it has not expired.
2410 */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2411 if (!tv_isle(&req->cex, &now))
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2412 return 0;
2413
2414 /* We will set the queue timer to the time spent, just for
2415 * logging purposes. We fake a 500 server error, so that the
2416 * attacker will not suspect his connection has been tarpitted.
2417 * It will not cause trouble to the logs because we can exclude
2418 * the tarpitted connections by filtering on the 'PT' status flags.
2419 */
2420 tv_eternity(&req->cex);
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2421 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2422 srv_close_with_err(t, SN_ERR_PRXCOND, SN_FINST_T,
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2423 500, error_message(t, HTTP_ERR_500));
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2424 return 1;
2425 }
2426
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2427 /* Right now, we will need to create a connection to the server.
2428 * We might already have tried, and got a connection pending, in
2429 * which case we will not do anything till it's pending. It's up
2430 * to any other session to release it and wake us up again.
2431 */
2432 if (t->pend_pos) {
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2433 if (!tv_isle(&req->cex, &now))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2434 return 0;
2435 else {
2436 /* we've been waiting too long here */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2437 tv_eternity(&req->cex);
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2438 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2439 srv_close_with_err(t, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2440 503, error_message(t, HTTP_ERR_503));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2441 if (t->srv)
2442 t->srv->failed_conns++;
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2443 t->fe->failed_conns++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2444 return 1;
2445 }
2446 }
2447
2448 do {
2449 /* first, get a connection */
2450 if (srv_redispatch_connect(t))
2451 return t->srv_state != SV_STIDLE;
2452
2453 /* try to (re-)connect to the server, and fail if we expire the
2454 * number of retries.
2455 */
2456 if (srv_retryable_connect(t)) {
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2457 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2458 return t->srv_state != SV_STIDLE;
2459 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2460 } while (1);
2461 }
2462 }
2463 else if (s == SV_STCONN) { /* connection in progress */
2464 if (c == CL_STCLOSE || c == CL_STSHUTW ||
2465 (c == CL_STSHUTR &&
Willy Tarreauc9b654b2007-05-08 14:46:53 +0200[diff] [blame]2466 ((t->req->l == 0 && !(req->flags & BF_WRITE_STATUS)) ||
2467 t->be->options & PR_O_ABRT_CLOSE))) { /* give up */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2468 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2469 fd_delete(t->srv_fd);
2470 if (t->srv)
2471 t->srv->cur_sess--;
2472
2473 /* note that this must not return any error because it would be able to
2474 * overwrite the client_retnclose() output.
2475 */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2476 srv_close_with_err(t, SN_ERR_CLICL, SN_FINST_C, 0, NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2477 return 1;
2478 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2479 if (!(req->flags & BF_WRITE_STATUS) && !tv_isle(&req->cex, &now)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2480 //fprintf(stderr,"1: c=%d, s=%d, now=%d.%06d, exp=%d.%06d\n", c, s, now.tv_sec, now.tv_usec, req->cex.tv_sec, req->cex.tv_usec);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2481 return 0; /* nothing changed */
2482 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2483 else if (!(req->flags & BF_WRITE_STATUS) || (req->flags & BF_WRITE_ERROR)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2484 /* timeout, asynchronous connect error or first write error */
2485 //fprintf(stderr,"2: c=%d, s=%d\n", c, s);
2486
2487 fd_delete(t->srv_fd);
2488 if (t->srv)
2489 t->srv->cur_sess--;
2490
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2491 if (!(req->flags & BF_WRITE_STATUS))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2492 conn_err = SN_ERR_SRVTO; // it was a connect timeout.
2493 else
2494 conn_err = SN_ERR_SRVCL; // it was an asynchronous connect error.
2495
2496 /* ensure that we have enough retries left */
2497 if (srv_count_retry_down(t, conn_err))
2498 return 1;
2499
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2500 if (t->srv && t->conn_retries == 0 && t->be->options & PR_O_REDISP) {
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2501 /* We're on our last chance, and the REDISP option was specified.
2502 * We will ignore cookie and force to balance or use the dispatcher.
2503 */
2504 /* let's try to offer this slot to anybody */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2505 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2506 task_wakeup(t->srv->queue_mgt);
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2507
2508 if (t->srv)
2509 t->srv->failed_conns++;
Krzysztof Oledzki1cf36ba2007-10-18 19:12:30 +0200[diff] [blame]2510 t->be->redispatches++;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2511
2512 t->flags &= ~(SN_DIRECT | SN_ASSIGNED | SN_ADDR_SET);
2513 t->srv = NULL; /* it's left to the dispatcher to choose a server */
Willy Tarreaua5e65752007-03-18 20:53:22 +0100[diff] [blame]2514 http_flush_cookie_flags(txn);
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2515
2516 /* first, get a connection */
2517 if (srv_redispatch_connect(t))
2518 return t->srv_state != SV_STIDLE;
2519 }
2520
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2521 do {
2522 /* Now we will try to either reconnect to the same server or
2523 * connect to another server. If the connection gets queued
2524 * because all servers are saturated, then we will go back to
2525 * the SV_STIDLE state.
2526 */
2527 if (srv_retryable_connect(t)) {
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2528 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2529 return t->srv_state != SV_STCONN;
2530 }
2531
2532 /* we need to redispatch the connection to another server */
2533 if (srv_redispatch_connect(t))
2534 return t->srv_state != SV_STCONN;
2535 } while (1);
2536 }
2537 else { /* no error or write 0 */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2538 t->logs.t_connect = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2539
2540 //fprintf(stderr,"3: c=%d, s=%d\n", c, s);
2541 if (req->l == 0) /* nothing to write */ {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2542 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2543 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2544 } else /* need the right to write */ {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2545 EV_FD_SET(t->srv_fd, DIR_WR);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2546 if (tv_add_ifset(&req->wex, &now, &t->be->srvtimeout)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2547 /* FIXME: to prevent the server from expiring read timeouts during writes,
2548 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2549 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2550 }
2551 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2552 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2553 }
2554
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2555 if (t->be->mode == PR_MODE_TCP) { /* let's allow immediate data connection in this case */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2556 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2557 if (!tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2558 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2559
2560 t->srv_state = SV_STDATA;
2561 if (t->srv)
2562 t->srv->cum_sess++;
2563 rep->rlim = rep->data + BUFSIZE; /* no rewrite needed */
2564
2565 /* if the user wants to log as soon as possible, without counting
2566 bytes from the server, then this is the right moment. */
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2567 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2568 t->logs.t_close = t->logs.t_connect; /* to get a valid end date */
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]2569 tcp_sess_log(t);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2570 }
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]2571#ifdef CONFIG_HAP_TCPSPLICE
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2572 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]2573 /* TCP splicing supported by both FE and BE */
2574 tcp_splice_splicefd(t->cli_fd, t->srv_fd, 0);
2575 }
2576#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2577 }
2578 else {
2579 t->srv_state = SV_STHEADERS;
2580 if (t->srv)
2581 t->srv->cum_sess++;
2582 rep->rlim = rep->data + BUFSIZE - MAXREWRITE; /* rewrite needed */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2583 t->txn.rsp.msg_state = HTTP_MSG_RPBEFORE;
2584 /* reset hdr_idx which was already initialized by the request.
2585 * right now, the http parser does it.
2586 * hdr_idx_init(&t->txn.hdr_idx);
2587 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2588 }
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2589 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2590 return 1;
2591 }
2592 }
2593 else if (s == SV_STHEADERS) { /* receiving server headers */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2594 /*
2595 * Now parse the partial (or complete) lines.
2596 * We will check the response syntax, and also join multi-line
2597 * headers. An index of all the lines will be elaborated while
2598 * parsing.
2599 *
2600 * For the parsing, we use a 28 states FSM.
2601 *
2602 * Here is the information we currently have :
2603 * rep->data + req->som = beginning of response
2604 * rep->data + req->eoh = end of processed headers / start of current one
2605 * rep->data + req->eol = end of current header or line (LF or CRLF)
2606 * rep->lr = first non-visited byte
2607 * rep->r = end of data
2608 */
2609
2610 int cur_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2611 struct http_msg *msg = &txn->rsp;
2612 struct proxy *cur_proxy;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2613
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2614 if (likely(rep->lr < rep->r))
2615 http_msg_analyzer(rep, msg, &txn->hdr_idx);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2616
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2617 /* 1: we might have to print this header in debug mode */
2618 if (unlikely((global.mode & MODE_DEBUG) &&
2619 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
2620 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
2621 char *eol, *sol;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2622
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2623 sol = rep->data + msg->som;
2624 eol = sol + msg->sl.rq.l;
2625 debug_hdr("srvrep", t, sol, eol);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2626
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2627 sol += hdr_idx_first_pos(&txn->hdr_idx);
2628 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2629
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2630 while (cur_idx) {
2631 eol = sol + txn->hdr_idx.v[cur_idx].len;
2632 debug_hdr("srvhdr", t, sol, eol);
2633 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2634 cur_idx = txn->hdr_idx.v[cur_idx].next;
2635 }
2636 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2637
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2638
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2639 if ((rep->l < rep->rlim - rep->data) && EV_FD_COND_S(t->srv_fd, DIR_RD)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2640 /* fd in DIR_RD was disabled, perhaps because of a previous buffer
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2641 * full. We cannot loop here since stream_sock_read will disable it only if
2642 * rep->l == rlim-data
2643 */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2644 if (!tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2645 tv_eternity(&rep->rex);
2646 }
2647
2648
2649 /*
2650 * Now we quickly check if we have found a full valid response.
2651 * If not so, we check the FD and buffer states before leaving.
2652 * A full response is indicated by the fact that we have seen
2653 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
2654 * responses are checked first.
2655 *
2656 * Depending on whether the client is still there or not, we
2657 * may send an error response back or not. Note that normally
2658 * we should only check for HTTP status there, and check I/O
2659 * errors somewhere else.
2660 */
2661
2662 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
2663
2664 /* Invalid response, or read error or write error */
2665 if (unlikely((msg->msg_state == HTTP_MSG_ERROR) ||
2666 (req->flags & BF_WRITE_ERROR) ||
2667 (rep->flags & BF_READ_ERROR))) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2668 buffer_shutr(rep);
2669 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2670 fd_delete(t->srv_fd);
2671 if (t->srv) {
2672 t->srv->cur_sess--;
2673 t->srv->failed_resp++;
2674 }
2675 t->be->failed_resp++;
2676 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2677 txn->status = 502;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2678 client_return(t, error_message(t, HTTP_ERR_502));
2679 if (!(t->flags & SN_ERR_MASK))
2680 t->flags |= SN_ERR_SRVCL;
2681 if (!(t->flags & SN_FINST_MASK))
2682 t->flags |= SN_FINST_H;
2683 /* We used to have a free connection slot. Since we'll never use it,
2684 * we have to inform the server that it may be used by another session.
2685 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2686 if (t->srv && may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2687 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2688
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2689 return 1;
2690 }
2691
2692 /* end of client write or end of server read.
2693 * since we are in header mode, if there's no space left for headers, we
2694 * won't be able to free more later, so the session will never terminate.
2695 */
2696 else if (unlikely(rep->flags & BF_READ_NULL ||
2697 c == CL_STSHUTW || c == CL_STCLOSE ||
2698 rep->l >= rep->rlim - rep->data)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2699 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2700 buffer_shutr(rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2701 t->srv_state = SV_STSHUTR;
2702 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2703 return 1;
2704 }
2705
2706 /* read timeout : return a 504 to the client.
2707 */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2708 else if (unlikely(EV_FD_ISSET(t->srv_fd, DIR_RD) &&
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2709 tv_isle(&rep->rex, &now))) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2710 buffer_shutr(rep);
2711 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2712 fd_delete(t->srv_fd);
2713 if (t->srv) {
2714 t->srv->cur_sess--;
2715 t->srv->failed_resp++;
2716 }
2717 t->be->failed_resp++;
2718 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2719 txn->status = 504;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2720 client_return(t, error_message(t, HTTP_ERR_504));
2721 if (!(t->flags & SN_ERR_MASK))
2722 t->flags |= SN_ERR_SRVTO;
2723 if (!(t->flags & SN_FINST_MASK))
2724 t->flags |= SN_FINST_H;
2725 /* We used to have a free connection slot. Since we'll never use it,
2726 * we have to inform the server that it may be used by another session.
2727 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2728 if (t->srv && may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2729 task_wakeup(t->srv->queue_mgt);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2730 return 1;
2731 }
2732
2733 /* last client read and buffer empty */
2734 /* FIXME!!! here, we don't want to switch to SHUTW if the
2735 * client shuts read too early, because we may still have
2736 * some work to do on the headers.
2737 * The side-effect is that if the client completely closes its
2738 * connection during SV_STHEADER, the connection to the server
2739 * is kept until a response comes back or the timeout is reached.
2740 */
2741 else if (unlikely((/*c == CL_STSHUTR ||*/ c == CL_STCLOSE) &&
2742 (req->l == 0))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2743 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2744 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2745
2746 /* We must ensure that the read part is still
2747 * alive when switching to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2748 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2749 tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2750
2751 shutdown(t->srv_fd, SHUT_WR);
2752 t->srv_state = SV_STSHUTW;
2753 return 1;
2754 }
2755
2756 /* write timeout */
2757 /* FIXME!!! here, we don't want to switch to SHUTW if the
2758 * client shuts read too early, because we may still have
2759 * some work to do on the headers.
2760 */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2761 else if (unlikely(EV_FD_ISSET(t->srv_fd, DIR_WR) &&
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2762 tv_isle(&req->wex, &now))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2763 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2764 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2765 shutdown(t->srv_fd, SHUT_WR);
2766 /* We must ensure that the read part is still alive
2767 * when switching to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2768 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2769 tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2770
2771 t->srv_state = SV_STSHUTW;
2772 if (!(t->flags & SN_ERR_MASK))
2773 t->flags |= SN_ERR_SRVTO;
2774 if (!(t->flags & SN_FINST_MASK))
2775 t->flags |= SN_FINST_H;
2776 return 1;
2777 }
2778
2779 /*
2780 * And now the non-error cases.
2781 */
2782
2783 /* Data remaining in the request buffer.
2784 * This happens during the first pass here, and during
2785 * long posts.
2786 */
2787 else if (likely(req->l)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2788 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
2789 /* restart writing */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2790 if (tv_add_ifset(&req->wex, &now, &t->be->srvtimeout)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2791 /* FIXME: to prevent the server from expiring read timeouts during writes,
2792 * we refresh it. */
2793 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2794 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2795 else
2796 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2797 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2798 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2799
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2800 /* nothing left in the request buffer */
2801 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2802 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
2803 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2804 tv_eternity(&req->wex);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2805 }
2806 }
2807
2808 return t->srv_state != SV_STHEADERS;
2809 }
2810
2811
2812 /*****************************************************************
2813 * More interesting part now : we know that we have a complete *
2814 * response which at least looks like HTTP. We have an indicator *
2815 * of each header's length, so we can parse them quickly. *
2816 ****************************************************************/
2817
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2818 /* ensure we keep this pointer to the beginning of the message */
2819 msg->sol = rep->data + msg->som;
2820
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2821 /*
2822 * 1: get the status code and check for cacheability.
2823 */
2824
2825 t->logs.logwait &= ~LW_RESP;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2826 txn->status = strl2ui(rep->data + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2827
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2828 switch (txn->status) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2829 case 200:
2830 case 203:
2831 case 206:
2832 case 300:
2833 case 301:
2834 case 410:
2835 /* RFC2616 @13.4:
2836 * "A response received with a status code of
2837 * 200, 203, 206, 300, 301 or 410 MAY be stored
2838 * by a cache (...) unless a cache-control
2839 * directive prohibits caching."
2840 *
2841 * RFC2616 @9.5: POST method :
2842 * "Responses to this method are not cacheable,
2843 * unless the response includes appropriate
2844 * Cache-Control or Expires header fields."
2845 */
2846 if (likely(txn->meth != HTTP_METH_POST) &&
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]2847 (t->be->options & (PR_O_CHK_CACHE|PR_O_COOK_NOC)))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2848 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2849 break;
2850 default:
2851 break;
2852 }
2853
2854 /*
2855 * 2: we may need to capture headers
2856 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2857 if (unlikely((t->logs.logwait & LW_RSPHDR) && t->fe->rsp_cap))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2858 capture_headers(rep->data + msg->som, &txn->hdr_idx,
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2859 txn->rsp.cap, t->fe->rsp_cap);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2860
2861 /*
2862 * 3: we will have to evaluate the filters.
2863 * As opposed to version 1.2, now they will be evaluated in the
2864 * filters order and not in the header order. This means that
2865 * each filter has to be validated among all headers.
2866 *
2867 * Filters are tried with ->be first, then with ->fe if it is
2868 * different from ->be.
2869 */
2870
2871 t->flags &= ~SN_CONN_CLOSED; /* prepare for inspection */
2872
2873 cur_proxy = t->be;
2874 while (1) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2875 struct proxy *rule_set = cur_proxy;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2876
2877 /* try headers filters */
2878 if (rule_set->rsp_exp != NULL) {
2879 if (apply_filters_to_response(t, rep, rule_set->rsp_exp) < 0) {
2880 return_bad_resp:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2881 if (t->srv) {
2882 t->srv->cur_sess--;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2883 t->srv->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2884 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2885 cur_proxy->failed_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2886 return_srv_prx_502:
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2887 buffer_shutr(rep);
2888 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2889 fd_delete(t->srv_fd);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2890 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2891 txn->status = 502;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2892 client_return(t, error_message(t, HTTP_ERR_502));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2893 if (!(t->flags & SN_ERR_MASK))
2894 t->flags |= SN_ERR_PRXCOND;
2895 if (!(t->flags & SN_FINST_MASK))
2896 t->flags |= SN_FINST_H;
2897 /* We used to have a free connection slot. Since we'll never use it,
2898 * we have to inform the server that it may be used by another session.
2899 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2900 if (t->srv && may_dequeue_tasks(t->srv, cur_proxy))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2901 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2902 return 1;
2903 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2904 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2905
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2906 /* has the response been denied ? */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2907 if (txn->flags & TX_SVDENY) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2908 if (t->srv) {
2909 t->srv->cur_sess--;
2910 t->srv->failed_secu++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2911 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2912 cur_proxy->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2913 goto return_srv_prx_502;
2914 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2915
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2916 /* We might have to check for "Connection:" */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2917 if (((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2918 !(t->flags & SN_CONN_CLOSED)) {
2919 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2920 int cur_idx, old_idx, delta, val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2921 struct hdr_idx_elem *cur_hdr;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2922
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2923 cur_next = rep->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
2924 old_idx = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2925
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2926 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
2927 cur_hdr = &txn->hdr_idx.v[cur_idx];
2928 cur_ptr = cur_next;
2929 cur_end = cur_ptr + cur_hdr->len;
2930 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2931
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2932 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
2933 if (val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2934 /* 3 possibilities :
2935 * - we have already set Connection: close,
2936 * so we remove this line.
2937 * - we have not yet set Connection: close,
2938 * but this line indicates close. We leave
2939 * it untouched and set the flag.
2940 * - we have not yet set Connection: close,
2941 * and this line indicates non-close. We
2942 * replace it.
2943 */
2944 if (t->flags & SN_CONN_CLOSED) {
2945 delta = buffer_replace2(rep, cur_ptr, cur_next, NULL, 0);
2946 txn->rsp.eoh += delta;
2947 cur_next += delta;
2948 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
2949 txn->hdr_idx.used--;
2950 cur_hdr->len = 0;
2951 } else {
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2952 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
2953 delta = buffer_replace2(rep, cur_ptr + val, cur_end,
2954 "close", 5);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2955 cur_next += delta;
2956 cur_hdr->len += delta;
2957 txn->rsp.eoh += delta;
2958 }
2959 t->flags |= SN_CONN_CLOSED;
2960 }
2961 }
2962 old_idx = cur_idx;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2963 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2964 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2965
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2966 /* add response headers from the rule sets in the same order */
2967 for (cur_idx = 0; cur_idx < rule_set->nb_rspadd; cur_idx++) {
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2968 if (unlikely(http_header_add_tail(rep, &txn->rsp, &txn->hdr_idx,
2969 rule_set->rsp_add[cur_idx])) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2970 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2971 }
2972
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2973 /* check whether we're already working on the frontend */
2974 if (cur_proxy == t->fe)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2975 break;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2976 cur_proxy = t->fe;
2977 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2978
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2979 /*
2980 * 4: check for server cookie.
2981 */
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]2982 if (t->be->cookie_name || t->be->appsession_name || t->be->capture_name
2983 || (t->be->options & PR_O_CHK_CACHE))
2984 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2985
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]2986
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2987 /*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]2988 * 5: check for cache-control or pragma headers if required.
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]2989 */
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]2990 if ((t->be->options & (PR_O_COOK_NOC | PR_O_CHK_CACHE)) != 0)
2991 check_response_for_cacheability(t, rep);
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]2992
2993 /*
2994 * 6: add server cookie in the response if needed
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2995 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2996 if ((t->srv) && !(t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_INS) &&
2997 (!(t->be->options & PR_O_COOK_POST) || (txn->meth == HTTP_METH_POST))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2998 int len;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2999
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3000 /* the server is known, it's not the one the client requested, we have to
3001 * insert a set-cookie here, except if we want to insert only on POST
3002 * requests and this one isn't. Note that servers which don't have cookies
3003 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3004 */
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3005 len = sprintf(trash, "Set-Cookie: %s=%s; path=/",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3006 t->be->cookie_name,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3007 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]3008
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3009 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3010 trash, len)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3011 goto return_bad_resp;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3012 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3013
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3014 /* Here, we will tell an eventual cache on the client side that we don't
3015 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
3016 * Some caches understand the correct form: 'no-cache="set-cookie"', but
3017 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
3018 */
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]3019 if ((t->be->options & PR_O_COOK_NOC) && (txn->flags & TX_CACHEABLE)) {
3020
3021 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
3022
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3023 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3024 "Cache-control: private", 22)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3025 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3026 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3027 }
3028
3029
3030 /*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3031 * 7: check if result will be cacheable with a cookie.
3032 * We'll block the response if security checks have caught
3033 * nasty things such as a cacheable cookie.
3034 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3035 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) ==
3036 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3037 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3038
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3039 /* we're in presence of a cacheable response containing
3040 * a set-cookie header. We'll block it as requested by
3041 * the 'checkcache' option, and send an alert.
3042 */
3043 if (t->srv) {
3044 t->srv->cur_sess--;
3045 t->srv->failed_secu++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3046 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3047 t->be->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3048
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3049 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3050 t->be->id, t->srv?t->srv->id:"<dispatch>");
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3051 send_log(t->be, LOG_ALERT,
3052 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3053 t->be->id, t->srv?t->srv->id:"<dispatch>");
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3054 goto return_srv_prx_502;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3055 }
3056
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3057 /*
3058 * 8: add "Connection: close" if needed and not yet set.
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]3059 * 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]3060 */
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]3061 if (!(t->flags & SN_CONN_CLOSED) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3062 ((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE)) {
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]3063 if ((unlikely(msg->sl.st.v_l != 8) ||
3064 unlikely(req->data[msg->som + 7] != '0')) &&
3065 unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3066 "Connection: close", 17)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3067 goto return_bad_resp;
3068 t->flags |= SN_CONN_CLOSED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3069 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3070
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3071
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3072 /*************************************************************
3073 * OK, that's finished for the headers. We have done what we *
3074 * could. Let's switch to the DATA state. *
3075 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3076
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3077 t->srv_state = SV_STDATA;
3078 rep->rlim = rep->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]3079 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3080
3081 /* client connection already closed or option 'forceclose' required :
3082 * we close the server's outgoing connection right now.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3083 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3084 if ((req->l == 0) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3085 (c == CL_STSHUTR || c == CL_STCLOSE || t->be->options & PR_O_FORCE_CLO)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3086 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3087 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3088
3089 /* We must ensure that the read part is still alive when switching
3090 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3091 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3092 tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3093
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3094 shutdown(t->srv_fd, SHUT_WR);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3095 t->srv_state = SV_STSHUTW;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3096 }
3097
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3098#ifdef CONFIG_HAP_TCPSPLICE
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3099 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3100 /* TCP splicing supported by both FE and BE */
3101 tcp_splice_splicefd(t->cli_fd, t->srv_fd, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3102 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3103#endif
3104 /* if the user wants to log as soon as possible, without counting
3105 bytes from the server, then this is the right moment. */
3106 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
3107 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
Willy Tarreaub4987172007-03-18 16:28:03 +0100[diff] [blame]3108 t->logs.bytes_in = txn->rsp.eoh;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]3109 if (t->fe->to_log & LW_REQ)
3110 http_sess_log(t);
3111 else
3112 tcp_sess_log(t);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100[diff] [blame]3113 t->logs.bytes_in = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3114 }
3115
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3116 /* Note: we must not try to cheat by jumping directly to DATA,
3117 * otherwise we would not let the client side wake up.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3118 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3119
3120 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3121 }
3122 else if (s == SV_STDATA) {
3123 /* read or write error */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3124 if (req->flags & BF_WRITE_ERROR || rep->flags & BF_READ_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3125 buffer_shutr(rep);
3126 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3127 fd_delete(t->srv_fd);
3128 if (t->srv) {
3129 t->srv->cur_sess--;
3130 t->srv->failed_resp++;
3131 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3132 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3133 t->srv_state = SV_STCLOSE;
3134 if (!(t->flags & SN_ERR_MASK))
3135 t->flags |= SN_ERR_SRVCL;
3136 if (!(t->flags & SN_FINST_MASK))
3137 t->flags |= SN_FINST_D;
3138 /* We used to have a free connection slot. Since we'll never use it,
3139 * we have to inform the server that it may be used by another session.
3140 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3141 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3142 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3143
3144 return 1;
3145 }
3146 /* last read, or end of client write */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3147 else if (rep->flags & BF_READ_NULL || c == CL_STSHUTW || c == CL_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3148 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3149 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3150 t->srv_state = SV_STSHUTR;
3151 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
3152 return 1;
3153 }
3154 /* end of client read and no more data to send */
3155 else if ((c == CL_STSHUTR || c == CL_STCLOSE) && (req->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3156 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3157 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3158 shutdown(t->srv_fd, SHUT_WR);
3159 /* We must ensure that the read part is still alive when switching
3160 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3161 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3162 tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3163
3164 t->srv_state = SV_STSHUTW;
3165 return 1;
3166 }
3167 /* read timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3168 else if (tv_isle(&rep->rex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3169 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3170 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3171 t->srv_state = SV_STSHUTR;
3172 if (!(t->flags & SN_ERR_MASK))
3173 t->flags |= SN_ERR_SRVTO;
3174 if (!(t->flags & SN_FINST_MASK))
3175 t->flags |= SN_FINST_D;
3176 return 1;
3177 }
3178 /* write timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3179 else if (tv_isle(&req->wex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3180 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3181 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3182 shutdown(t->srv_fd, SHUT_WR);
3183 /* We must ensure that the read part is still alive when switching
3184 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3185 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3186 tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3187 t->srv_state = SV_STSHUTW;
3188 if (!(t->flags & SN_ERR_MASK))
3189 t->flags |= SN_ERR_SRVTO;
3190 if (!(t->flags & SN_FINST_MASK))
3191 t->flags |= SN_FINST_D;
3192 return 1;
3193 }
3194
3195 /* recompute request time-outs */
3196 if (req->l == 0) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3197 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
3198 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3199 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3200 }
3201 }
3202 else { /* buffer not empty, there are still data to be transferred */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3203 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
3204 /* restart writing */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3205 if (tv_add_ifset(&req->wex, &now, &t->be->srvtimeout)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3206 /* FIXME: to prevent the server from expiring read timeouts during writes,
3207 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3208 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3209 }
3210 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3211 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3212 }
3213 }
3214
3215 /* recompute response time-outs */
3216 if (rep->l == BUFSIZE) { /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3217 if (EV_FD_COND_C(t->srv_fd, DIR_RD)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3218 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3219 }
3220 }
3221 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3222 if (EV_FD_COND_S(t->srv_fd, DIR_RD)) {
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3223 if (!tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3224 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3225 }
3226 }
3227
3228 return 0; /* other cases change nothing */
3229 }
3230 else if (s == SV_STSHUTR) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3231 if (req->flags & BF_WRITE_ERROR) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3232 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3233 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3234 fd_delete(t->srv_fd);
3235 if (t->srv) {
3236 t->srv->cur_sess--;
3237 t->srv->failed_resp++;
3238 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3239 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3240 //close(t->srv_fd);
3241 t->srv_state = SV_STCLOSE;
3242 if (!(t->flags & SN_ERR_MASK))
3243 t->flags |= SN_ERR_SRVCL;
3244 if (!(t->flags & SN_FINST_MASK))
3245 t->flags |= SN_FINST_D;
3246 /* We used to have a free connection slot. Since we'll never use it,
3247 * we have to inform the server that it may be used by another session.
3248 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3249 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3250 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3251
3252 return 1;
3253 }
3254 else if ((c == CL_STSHUTR || c == CL_STCLOSE) && (req->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3255 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3256 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3257 fd_delete(t->srv_fd);
3258 if (t->srv)
3259 t->srv->cur_sess--;
3260 //close(t->srv_fd);
3261 t->srv_state = SV_STCLOSE;
3262 /* We used to have a free connection slot. Since we'll never use it,
3263 * we have to inform the server that it may be used by another session.
3264 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3265 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3266 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3267
3268 return 1;
3269 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3270 else if (tv_isle(&req->wex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3271 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3272 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3273 fd_delete(t->srv_fd);
3274 if (t->srv)
3275 t->srv->cur_sess--;
3276 //close(t->srv_fd);
3277 t->srv_state = SV_STCLOSE;
3278 if (!(t->flags & SN_ERR_MASK))
3279 t->flags |= SN_ERR_SRVTO;
3280 if (!(t->flags & SN_FINST_MASK))
3281 t->flags |= SN_FINST_D;
3282 /* We used to have a free connection slot. Since we'll never use it,
3283 * we have to inform the server that it may be used by another session.
3284 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3285 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3286 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3287
3288 return 1;
3289 }
3290 else if (req->l == 0) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3291 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
3292 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3293 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3294 }
3295 }
3296 else { /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3297 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
3298 /* restart writing */
Willy Tarreau33014d02007-06-03 15:25:37 +0200[diff] [blame]3299 if (!tv_add_ifset(&req->wex, &now, &t->be->srvtimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3300 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3301 }
3302 }
3303 return 0;
3304 }
3305 else if (s == SV_STSHUTW) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3306 if (rep->flags & BF_READ_ERROR) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3307 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3308 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3309 fd_delete(t->srv_fd);
3310 if (t->srv) {
3311 t->srv->cur_sess--;
3312 t->srv->failed_resp++;
3313 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3314 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3315 //close(t->srv_fd);
3316 t->srv_state = SV_STCLOSE;
3317 if (!(t->flags & SN_ERR_MASK))
3318 t->flags |= SN_ERR_SRVCL;
3319 if (!(t->flags & SN_FINST_MASK))
3320 t->flags |= SN_FINST_D;
3321 /* We used to have a free connection slot. Since we'll never use it,
3322 * we have to inform the server that it may be used by another session.
3323 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3324 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3325 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3326
3327 return 1;
3328 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3329 else if (rep->flags & BF_READ_NULL || c == CL_STSHUTW || c == CL_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3330 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3331 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3332 fd_delete(t->srv_fd);
3333 if (t->srv)
3334 t->srv->cur_sess--;
3335 //close(t->srv_fd);
3336 t->srv_state = SV_STCLOSE;
3337 /* We used to have a free connection slot. Since we'll never use it,
3338 * we have to inform the server that it may be used by another session.
3339 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3340 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3341 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3342
3343 return 1;
3344 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3345 else if (tv_isle(&rep->rex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3346 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3347 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3348 fd_delete(t->srv_fd);
3349 if (t->srv)
3350 t->srv->cur_sess--;
3351 //close(t->srv_fd);
3352 t->srv_state = SV_STCLOSE;
3353 if (!(t->flags & SN_ERR_MASK))
3354 t->flags |= SN_ERR_SRVTO;
3355 if (!(t->flags & SN_FINST_MASK))
3356 t->flags |= SN_FINST_D;
3357 /* We used to have a free connection slot. Since we'll never use it,
3358 * we have to inform the server that it may be used by another session.
3359 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3360 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3361 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3362
3363 return 1;
3364 }
3365 else if (rep->l == BUFSIZE) { /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3366 if (EV_FD_COND_C(t->srv_fd, DIR_RD)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3367 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3368 }
3369 }
3370 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3371 if (EV_FD_COND_S(t->srv_fd, DIR_RD)) {
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3372 if (!tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3373 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3374 }
3375 }
3376 return 0;
3377 }
3378 else { /* SV_STCLOSE : nothing to do */
3379 if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
3380 int len;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3381 len = sprintf(trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3382 t->uniq_id, t->be->id, (unsigned short)t->cli_fd, (unsigned short)t->srv_fd);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3383 write(1, trash, len);
3384 }
3385 return 0;
3386 }
3387 return 0;
3388}
3389
3390
3391/*
3392 * Produces data for the session <s> depending on its source. Expects to be
3393 * called with s->cli_state == CL_STSHUTR. Right now, only statistics can be
3394 * produced. It stops by itself by unsetting the SN_SELF_GEN flag from the
3395 * session, which it uses to keep on being called when there is free space in
3396 * the buffer, of simply by letting an empty buffer upon return. It returns 1
3397 * if it changes the session state from CL_STSHUTR, otherwise 0.
3398 */
3399int produce_content(struct session *s)
3400{
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3401 if (s->data_source == DATA_SRC_NONE) {
3402 s->flags &= ~SN_SELF_GEN;
3403 return 1;
3404 }
3405 else if (s->data_source == DATA_SRC_STATS) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3406 /* dump server statistics */
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]3407 int ret = stats_dump_http(s, s->be->uri_auth,
3408 (s->flags & SN_STAT_FMTCSV) ? 0 : STAT_FMT_HTML);
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3409 if (ret >= 0)
3410 return ret;
3411 /* -1 indicates an error */
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3412 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3413
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3414 /* unknown data source or internal error */
3415 s->txn.status = 500;
3416 client_retnclose(s, error_message(s, HTTP_ERR_500));
3417 if (!(s->flags & SN_ERR_MASK))
3418 s->flags |= SN_ERR_PRXCOND;
3419 if (!(s->flags & SN_FINST_MASK))
3420 s->flags |= SN_FINST_R;
3421 s->flags &= ~SN_SELF_GEN;
3422 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3423}
3424
3425
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3426/* Iterate the same filter through all request headers.
3427 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3428 * Since it can manage the switch to another backend, it updates the per-proxy
3429 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3430 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3431int 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]3432{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3433 char term;
3434 char *cur_ptr, *cur_end, *cur_next;
3435 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3436 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3437 struct hdr_idx_elem *cur_hdr;
3438 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]3439
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3440 last_hdr = 0;
3441
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3442 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3443 old_idx = 0;
3444
3445 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3446 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3447 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3448 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3449 (exp->action == ACT_ALLOW ||
3450 exp->action == ACT_DENY ||
3451 exp->action == ACT_TARPIT))
3452 return 0;
3453
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3454 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3455 if (!cur_idx)
3456 break;
3457
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3458 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3459 cur_ptr = cur_next;
3460 cur_end = cur_ptr + cur_hdr->len;
3461 cur_next = cur_end + cur_hdr->cr + 1;
3462
3463 /* Now we have one header between cur_ptr and cur_end,
3464 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3465 */
3466
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3467 /* The annoying part is that pattern matching needs
3468 * that we modify the contents to null-terminate all
3469 * strings before testing them.
3470 */
3471
3472 term = *cur_end;
3473 *cur_end = '\0';
3474
3475 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3476 switch (exp->action) {
3477 case ACT_SETBE:
3478 /* It is not possible to jump a second time.
3479 * FIXME: should we return an HTTP/500 here so that
3480 * the admin knows there's a problem ?
3481 */
3482 if (t->be != t->fe)
3483 break;
3484
3485 /* Swithing Proxy */
3486 t->be = (struct proxy *) exp->replace;
3487
3488 /* right now, the backend switch is not too much complicated
3489 * because we have associated req_cap and rsp_cap to the
3490 * frontend, and the beconn will be updated later.
3491 */
3492
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3493 t->rep->rto = t->req->wto = t->be->srvtimeout;
3494 t->req->cto = t->be->contimeout;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3495 t->conn_retries = t->be->conn_retries;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3496 last_hdr = 1;
3497 break;
3498
3499 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3500 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3501 last_hdr = 1;
3502 break;
3503
3504 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3505 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3506 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3507 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3508 break;
3509
3510 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3511 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3512 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3513 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3514 break;
3515
3516 case ACT_REPLACE:
3517 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3518 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3519 /* FIXME: if the user adds a newline in the replacement, the
3520 * index will not be recalculated for now, and the new line
3521 * will not be counted as a new header.
3522 */
3523
3524 cur_end += delta;
3525 cur_next += delta;
3526 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3527 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3528 break;
3529
3530 case ACT_REMOVE:
3531 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
3532 cur_next += delta;
3533
3534 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3535 txn->req.eoh += delta;
3536 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3537 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3538 cur_hdr->len = 0;
3539 cur_end = NULL; /* null-term has been rewritten */
3540 break;
3541
3542 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3543 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3544 if (cur_end)
3545 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3546
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3547 /* keep the link from this header to next one in case of later
3548 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3549 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3550 old_idx = cur_idx;
3551 }
3552 return 0;
3553}
3554
3555
3556/* Apply the filter to the request line.
3557 * Returns 0 if nothing has been done, 1 if the filter has been applied,
3558 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3559 * Since it can manage the switch to another backend, it updates the per-proxy
3560 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3561 */
3562int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
3563{
3564 char term;
3565 char *cur_ptr, *cur_end;
3566 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3567 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3568 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3569
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3570
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3571 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3572 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3573 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3574 (exp->action == ACT_ALLOW ||
3575 exp->action == ACT_DENY ||
3576 exp->action == ACT_TARPIT))
3577 return 0;
3578 else if (exp->action == ACT_REMOVE)
3579 return 0;
3580
3581 done = 0;
3582
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3583 cur_ptr = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3584 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3585
3586 /* Now we have the request line between cur_ptr and cur_end */
3587
3588 /* The annoying part is that pattern matching needs
3589 * that we modify the contents to null-terminate all
3590 * strings before testing them.
3591 */
3592
3593 term = *cur_end;
3594 *cur_end = '\0';
3595
3596 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3597 switch (exp->action) {
3598 case ACT_SETBE:
3599 /* It is not possible to jump a second time.
3600 * FIXME: should we return an HTTP/500 here so that
3601 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3602 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3603 if (t->be != t->fe)
3604 break;
3605
3606 /* Swithing Proxy */
3607 t->be = (struct proxy *) exp->replace;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3608
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3609 /* right now, the backend switch is not too much complicated
3610 * because we have associated req_cap and rsp_cap to the
3611 * frontend, and the beconn will be updated later.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3612 */
3613
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3614 t->rep->rto = t->req->wto = t->be->srvtimeout;
3615 t->req->cto = t->be->contimeout;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3616 t->conn_retries = t->be->conn_retries;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3617 done = 1;
3618 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3619
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3620 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3621 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3622 done = 1;
3623 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3624
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3625 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3626 txn->flags |= TX_CLDENY;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3627 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3628 done = 1;
3629 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3630
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3631 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3632 txn->flags |= TX_CLTARPIT;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3633 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3634 done = 1;
3635 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3636
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3637 case ACT_REPLACE:
3638 *cur_end = term; /* restore the string terminator */
3639 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3640 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3641 /* FIXME: if the user adds a newline in the replacement, the
3642 * index will not be recalculated for now, and the new line
3643 * will not be counted as a new header.
3644 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3645
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3646 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3647 cur_end += delta;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3648
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3649 txn->req.sol = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3650 cur_end = (char *)http_parse_reqline(&txn->req, req->data,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3651 HTTP_MSG_RQMETH,
3652 cur_ptr, cur_end + 1,
3653 NULL, NULL);
3654 if (unlikely(!cur_end))
3655 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3656
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3657 /* we have a full request and we know that we have either a CR
3658 * or an LF at <ptr>.
3659 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3660 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
3661 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]3662 /* there is no point trying this regex on headers */
3663 return 1;
3664 }
3665 }
3666 *cur_end = term; /* restore the string terminator */
3667 return done;
3668}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]3669
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3670
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3671
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3672/*
3673 * Apply all the req filters <exp> to all headers in buffer <req> of session <t>.
3674 * 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]3675 * unparsable request. Since it can manage the switch to another backend, it
3676 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3677 */
3678int apply_filters_to_request(struct session *t, struct buffer *req, struct hdr_exp *exp)
3679{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3680 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3681 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3682 while (exp && !(txn->flags & (TX_CLDENY|TX_CLTARPIT))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3683 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3684
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3685 /*
3686 * The interleaving of transformations and verdicts
3687 * makes it difficult to decide to continue or stop
3688 * the evaluation.
3689 */
3690
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3691 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3692 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
3693 exp->action == ACT_TARPIT || exp->action == ACT_PASS)) {
3694 exp = exp->next;
3695 continue;
3696 }
3697
3698 /* Apply the filter to the request line. */
3699 ret = apply_filter_to_req_line(t, req, exp);
3700 if (unlikely(ret < 0))
3701 return -1;
3702
3703 if (likely(ret == 0)) {
3704 /* The filter did not match the request, it can be
3705 * iterated through all headers.
3706 */
3707 apply_filter_to_req_headers(t, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3708 }
3709 exp = exp->next;
3710 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3711 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3712}
3713
3714
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3715
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3716/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3717 * Manage client-side cookie. It can impact performance by about 2% so it is
3718 * desirable to call it only when needed.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3719 */
3720void manage_client_side_cookies(struct session *t, struct buffer *req)
3721{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3722 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3723 char *p1, *p2, *p3, *p4;
3724 char *del_colon, *del_cookie, *colon;
3725 int app_cookies;
3726
3727 appsess *asession_temp = NULL;
3728 appsess local_asession;
3729
3730 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3731 int cur_idx, old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3732
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3733 /* Iterate through the headers.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3734 * we start with the start line.
3735 */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]3736 old_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3737 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3738
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3739 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3740 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3741 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3742
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3743 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3744 cur_ptr = cur_next;
3745 cur_end = cur_ptr + cur_hdr->len;
3746 cur_next = cur_end + cur_hdr->cr + 1;
3747
3748 /* We have one full header between cur_ptr and cur_end, and the
3749 * next header starts at cur_next. We're only interested in
3750 * "Cookie:" headers.
3751 */
3752
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3753 val = http_header_match2(cur_ptr, cur_end, "Cookie", 6);
3754 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3755 old_idx = cur_idx;
3756 continue;
3757 }
3758
3759 /* Now look for cookies. Conforming to RFC2109, we have to support
3760 * attributes whose name begin with a '$', and associate them with
3761 * the right cookie, if we want to delete this cookie.
3762 * So there are 3 cases for each cookie read :
3763 * 1) it's a special attribute, beginning with a '$' : ignore it.
3764 * 2) it's a server id cookie that we *MAY* want to delete : save
3765 * some pointers on it (last semi-colon, beginning of cookie...)
3766 * 3) it's an application cookie : we *MAY* have to delete a previous
3767 * "special" cookie.
3768 * At the end of loop, if a "special" cookie remains, we may have to
3769 * remove it. If no application cookie persists in the header, we
3770 * *MUST* delete it
3771 */
3772
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3773 colon = p1 = cur_ptr + val; /* first non-space char after 'Cookie:' */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3774
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3775 /* del_cookie == NULL => nothing to be deleted */
3776 del_colon = del_cookie = NULL;
3777 app_cookies = 0;
3778
3779 while (p1 < cur_end) {
3780 /* skip spaces and colons, but keep an eye on these ones */
3781 while (p1 < cur_end) {
3782 if (*p1 == ';' || *p1 == ',')
3783 colon = p1;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3784 else if (!isspace((unsigned char)*p1))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3785 break;
3786 p1++;
3787 }
3788
3789 if (p1 == cur_end)
3790 break;
3791
3792 /* p1 is at the beginning of the cookie name */
3793 p2 = p1;
3794 while (p2 < cur_end && *p2 != '=')
3795 p2++;
3796
3797 if (p2 == cur_end)
3798 break;
3799
3800 p3 = p2 + 1; /* skips the '=' sign */
3801 if (p3 == cur_end)
3802 break;
3803
3804 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3805 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';' && *p4 != ',')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3806 p4++;
3807
3808 /* here, we have the cookie name between p1 and p2,
3809 * and its value between p3 and p4.
3810 * we can process it :
3811 *
3812 * Cookie: NAME=VALUE;
3813 * | || || |
3814 * | || || +--> p4
3815 * | || |+-------> p3
3816 * | || +--------> p2
3817 * | |+------------> p1
3818 * | +-------------> colon
3819 * +--------------------> cur_ptr
3820 */
3821
3822 if (*p1 == '$') {
3823 /* skip this one */
3824 }
3825 else {
3826 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3827 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3828 txn->cli_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3829 (p4 - p1 >= t->fe->capture_namelen) &&
3830 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3831 int log_len = p4 - p1;
3832
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]3833 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3834 Alert("HTTP logging : out of memory.\n");
3835 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3836 if (log_len > t->fe->capture_len)
3837 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3838 memcpy(txn->cli_cookie, p1, log_len);
3839 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3840 }
3841 }
3842
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3843 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
3844 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3845 /* Cool... it's the right one */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3846 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3847 char *delim;
3848
3849 /* if we're in cookie prefix mode, we'll search the delimitor so that we
3850 * have the server ID betweek p3 and delim, and the original cookie between
3851 * delim+1 and p4. Otherwise, delim==p4 :
3852 *
3853 * Cookie: NAME=SRV~VALUE;
3854 * | || || | |
3855 * | || || | +--> p4
3856 * | || || +--------> delim
3857 * | || |+-----------> p3
3858 * | || +------------> p2
3859 * | |+----------------> p1
3860 * | +-----------------> colon
3861 * +------------------------> cur_ptr
3862 */
3863
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3864 if (t->be->options & PR_O_COOK_PFX) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3865 for (delim = p3; delim < p4; delim++)
3866 if (*delim == COOKIE_DELIM)
3867 break;
3868 }
3869 else
3870 delim = p4;
3871
3872
3873 /* Here, we'll look for the first running server which supports the cookie.
3874 * This allows to share a same cookie between several servers, for example
3875 * to dedicate backup servers to specific servers only.
3876 * However, to prevent clients from sticking to cookie-less backup server
3877 * when they have incidentely learned an empty cookie, we simply ignore
3878 * empty cookies and mark them as invalid.
3879 */
3880 if (delim == p3)
3881 srv = NULL;
3882
3883 while (srv) {
Willy Tarreau92f2ab12007-02-02 22:14:47 +0100[diff] [blame]3884 if (srv->cookie && (srv->cklen == delim - p3) &&
3885 !memcmp(p3, srv->cookie, delim - p3)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3886 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3887 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3888 txn->flags &= ~TX_CK_MASK;
3889 txn->flags |= TX_CK_VALID;
3890 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3891 t->srv = srv;
3892 break;
3893 } else {
3894 /* we found a server, but it's down */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3895 txn->flags &= ~TX_CK_MASK;
3896 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3897 }
3898 }
3899 srv = srv->next;
3900 }
3901
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3902 if (!srv && !(txn->flags & TX_CK_DOWN)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3903 /* no server matched this cookie */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3904 txn->flags &= ~TX_CK_MASK;
3905 txn->flags |= TX_CK_INVALID;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3906 }
3907
3908 /* depending on the cookie mode, we may have to either :
3909 * - delete the complete cookie if we're in insert+indirect mode, so that
3910 * the server never sees it ;
3911 * - remove the server id from the cookie value, and tag the cookie as an
3912 * application cookie so that it does not get accidentely removed later,
3913 * if we're in cookie prefix mode
3914 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3915 if ((t->be->options & PR_O_COOK_PFX) && (delim != p4)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3916 int delta; /* negative */
3917
3918 delta = buffer_replace2(req, p3, delim + 1, NULL, 0);
3919 p4 += delta;
3920 cur_end += delta;
3921 cur_next += delta;
3922 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3923 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3924
3925 del_cookie = del_colon = NULL;
3926 app_cookies++; /* protect the header from deletion */
3927 }
3928 else if (del_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3929 (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]3930 del_cookie = p1;
3931 del_colon = colon;
3932 }
3933 } else {
3934 /* now we know that we must keep this cookie since it's
3935 * not ours. But if we wanted to delete our cookie
3936 * earlier, we cannot remove the complete header, but we
3937 * can remove the previous block itself.
3938 */
3939 app_cookies++;
3940
3941 if (del_cookie != NULL) {
3942 int delta; /* negative */
3943
3944 delta = buffer_replace2(req, del_cookie, p1, NULL, 0);
3945 p4 += delta;
3946 cur_end += delta;
3947 cur_next += delta;
3948 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3949 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3950 del_cookie = del_colon = NULL;
3951 }
3952 }
3953
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3954 if ((t->be->appsession_name != NULL) &&
3955 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3956 /* first, let's see if the cookie is our appcookie*/
3957
3958 /* Cool... it's the right one */
3959
3960 asession_temp = &local_asession;
3961
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3962 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3963 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
3964 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
3965 return;
3966 }
3967
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3968 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
3969 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3970 asession_temp->serverid = NULL;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3971
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3972 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3973 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
3974 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3975 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3976 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3977 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3978 Alert("Not enough memory process_cli():asession:calloc().\n");
3979 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
3980 return;
3981 }
3982
3983 asession_temp->sessid = local_asession.sessid;
3984 asession_temp->serverid = local_asession.serverid;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3985 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3986 } else {
3987 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3988 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3989 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3990 if (asession_temp->serverid == NULL) {
3991 Alert("Found Application Session without matching server.\n");
3992 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3993 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3994 while (srv) {
3995 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3996 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3997 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3998 txn->flags &= ~TX_CK_MASK;
3999 txn->flags |= TX_CK_VALID;
4000 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4001 t->srv = srv;
4002 break;
4003 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4004 txn->flags &= ~TX_CK_MASK;
4005 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4006 }
4007 }
4008 srv = srv->next;
4009 }/* end while(srv) */
4010 }/* end else if server == NULL */
4011
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]4012 tv_add(&asession_temp->expire, &now, &t->be->appsession_timeout);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4013 }/* end if ((t->proxy->appsession_name != NULL) ... */
4014 }
4015
4016 /* we'll have to look for another cookie ... */
4017 p1 = p4;
4018 } /* while (p1 < cur_end) */
4019
4020 /* There's no more cookie on this line.
4021 * We may have marked the last one(s) for deletion.
4022 * We must do this now in two ways :
4023 * - if there is no app cookie, we simply delete the header ;
4024 * - if there are app cookies, we must delete the end of the
4025 * string properly, including the colon/semi-colon before
4026 * the cookie name.
4027 */
4028 if (del_cookie != NULL) {
4029 int delta;
4030 if (app_cookies) {
4031 delta = buffer_replace2(req, del_colon, cur_end, NULL, 0);
4032 cur_end = del_colon;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4033 cur_hdr->len += delta;
4034 } else {
4035 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4036
4037 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4038 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4039 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4040 cur_hdr->len = 0;
4041 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]4042 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4043 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4044 }
4045
4046 /* keep the link from this header to next one */
4047 old_idx = cur_idx;
4048 } /* end of cookie processing on this header */
4049}
4050
4051
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4052/* Iterate the same filter through all response headers contained in <rtr>.
4053 * Returns 1 if this filter can be stopped upon return, otherwise 0.
4054 */
4055int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4056{
4057 char term;
4058 char *cur_ptr, *cur_end, *cur_next;
4059 int cur_idx, old_idx, last_hdr;
4060 struct http_txn *txn = &t->txn;
4061 struct hdr_idx_elem *cur_hdr;
4062 int len, delta;
4063
4064 last_hdr = 0;
4065
4066 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4067 old_idx = 0;
4068
4069 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4070 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4071 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4072 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4073 (exp->action == ACT_ALLOW ||
4074 exp->action == ACT_DENY))
4075 return 0;
4076
4077 cur_idx = txn->hdr_idx.v[old_idx].next;
4078 if (!cur_idx)
4079 break;
4080
4081 cur_hdr = &txn->hdr_idx.v[cur_idx];
4082 cur_ptr = cur_next;
4083 cur_end = cur_ptr + cur_hdr->len;
4084 cur_next = cur_end + cur_hdr->cr + 1;
4085
4086 /* Now we have one header between cur_ptr and cur_end,
4087 * and the next header starts at cur_next.
4088 */
4089
4090 /* The annoying part is that pattern matching needs
4091 * that we modify the contents to null-terminate all
4092 * strings before testing them.
4093 */
4094
4095 term = *cur_end;
4096 *cur_end = '\0';
4097
4098 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4099 switch (exp->action) {
4100 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4101 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4102 last_hdr = 1;
4103 break;
4104
4105 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4106 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4107 last_hdr = 1;
4108 break;
4109
4110 case ACT_REPLACE:
4111 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4112 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4113 /* FIXME: if the user adds a newline in the replacement, the
4114 * index will not be recalculated for now, and the new line
4115 * will not be counted as a new header.
4116 */
4117
4118 cur_end += delta;
4119 cur_next += delta;
4120 cur_hdr->len += delta;
4121 txn->rsp.eoh += delta;
4122 break;
4123
4124 case ACT_REMOVE:
4125 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4126 cur_next += delta;
4127
4128 /* FIXME: this should be a separate function */
4129 txn->rsp.eoh += delta;
4130 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4131 txn->hdr_idx.used--;
4132 cur_hdr->len = 0;
4133 cur_end = NULL; /* null-term has been rewritten */
4134 break;
4135
4136 }
4137 }
4138 if (cur_end)
4139 *cur_end = term; /* restore the string terminator */
4140
4141 /* keep the link from this header to next one in case of later
4142 * removal of next header.
4143 */
4144 old_idx = cur_idx;
4145 }
4146 return 0;
4147}
4148
4149
4150/* Apply the filter to the status line in the response buffer <rtr>.
4151 * Returns 0 if nothing has been done, 1 if the filter has been applied,
4152 * or -1 if a replacement resulted in an invalid status line.
4153 */
4154int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4155{
4156 char term;
4157 char *cur_ptr, *cur_end;
4158 int done;
4159 struct http_txn *txn = &t->txn;
4160 int len, delta;
4161
4162
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4163 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4164 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4165 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4166 (exp->action == ACT_ALLOW ||
4167 exp->action == ACT_DENY))
4168 return 0;
4169 else if (exp->action == ACT_REMOVE)
4170 return 0;
4171
4172 done = 0;
4173
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4174 cur_ptr = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4175 cur_end = cur_ptr + txn->rsp.sl.rq.l;
4176
4177 /* Now we have the status line between cur_ptr and cur_end */
4178
4179 /* The annoying part is that pattern matching needs
4180 * that we modify the contents to null-terminate all
4181 * strings before testing them.
4182 */
4183
4184 term = *cur_end;
4185 *cur_end = '\0';
4186
4187 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4188 switch (exp->action) {
4189 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4190 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4191 done = 1;
4192 break;
4193
4194 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4195 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4196 done = 1;
4197 break;
4198
4199 case ACT_REPLACE:
4200 *cur_end = term; /* restore the string terminator */
4201 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4202 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4203 /* FIXME: if the user adds a newline in the replacement, the
4204 * index will not be recalculated for now, and the new line
4205 * will not be counted as a new header.
4206 */
4207
4208 txn->rsp.eoh += delta;
4209 cur_end += delta;
4210
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4211 txn->rsp.sol = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4212 cur_end = (char *)http_parse_stsline(&txn->rsp, rtr->data,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]4213 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4214 cur_ptr, cur_end + 1,
4215 NULL, NULL);
4216 if (unlikely(!cur_end))
4217 return -1;
4218
4219 /* we have a full respnse and we know that we have either a CR
4220 * or an LF at <ptr>.
4221 */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4222 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]4223 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.rq.l, *cur_end == '\r');
4224 /* there is no point trying this regex on headers */
4225 return 1;
4226 }
4227 }
4228 *cur_end = term; /* restore the string terminator */
4229 return done;
4230}
4231
4232
4233
4234/*
4235 * Apply all the resp filters <exp> to all headers in buffer <rtr> of session <t>.
4236 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
4237 * unparsable response.
4238 */
4239int apply_filters_to_response(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4240{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4241 struct http_txn *txn = &t->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4242 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4243 while (exp && !(txn->flags & TX_SVDENY)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4244 int ret;
4245
4246 /*
4247 * The interleaving of transformations and verdicts
4248 * makes it difficult to decide to continue or stop
4249 * the evaluation.
4250 */
4251
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4252 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4253 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4254 exp->action == ACT_PASS)) {
4255 exp = exp->next;
4256 continue;
4257 }
4258
4259 /* Apply the filter to the status line. */
4260 ret = apply_filter_to_sts_line(t, rtr, exp);
4261 if (unlikely(ret < 0))
4262 return -1;
4263
4264 if (likely(ret == 0)) {
4265 /* The filter did not match the response, it can be
4266 * iterated through all headers.
4267 */
4268 apply_filter_to_resp_headers(t, rtr, exp);
4269 }
4270 exp = exp->next;
4271 }
4272 return 0;
4273}
4274
4275
4276
4277/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]4278 * Manage server-side cookies. It can impact performance by about 2% so it is
4279 * desirable to call it only when needed.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4280 */
4281void manage_server_side_cookies(struct session *t, struct buffer *rtr)
4282{
4283 struct http_txn *txn = &t->txn;
4284 char *p1, *p2, *p3, *p4;
4285
4286 appsess *asession_temp = NULL;
4287 appsess local_asession;
4288
4289 char *cur_ptr, *cur_end, *cur_next;
4290 int cur_idx, old_idx, delta;
4291
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4292 /* Iterate through the headers.
4293 * we start with the start line.
4294 */
4295 old_idx = 0;
4296 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4297
4298 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
4299 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4300 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4301
4302 cur_hdr = &txn->hdr_idx.v[cur_idx];
4303 cur_ptr = cur_next;
4304 cur_end = cur_ptr + cur_hdr->len;
4305 cur_next = cur_end + cur_hdr->cr + 1;
4306
4307 /* We have one full header between cur_ptr and cur_end, and the
4308 * next header starts at cur_next. We're only interested in
4309 * "Cookie:" headers.
4310 */
4311
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4312 val = http_header_match2(cur_ptr, cur_end, "Set-Cookie", 10);
4313 if (!val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4314 old_idx = cur_idx;
4315 continue;
4316 }
4317
4318 /* OK, right now we know we have a set-cookie at cur_ptr */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4319 txn->flags |= TX_SCK_ANY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4320
4321
4322 /* maybe we only wanted to see if there was a set-cookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4323 if (t->be->cookie_name == NULL &&
4324 t->be->appsession_name == NULL &&
4325 t->be->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4326 return;
4327
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4328 p1 = cur_ptr + val; /* first non-space char after 'Set-Cookie:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4329
4330 while (p1 < cur_end) { /* in fact, we'll break after the first cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4331 if (p1 == cur_end || *p1 == ';') /* end of cookie */
4332 break;
4333
4334 /* p1 is at the beginning of the cookie name */
4335 p2 = p1;
4336
4337 while (p2 < cur_end && *p2 != '=' && *p2 != ';')
4338 p2++;
4339
4340 if (p2 == cur_end || *p2 == ';') /* next cookie */
4341 break;
4342
4343 p3 = p2 + 1; /* skip the '=' sign */
4344 if (p3 == cur_end)
4345 break;
4346
4347 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4348 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';')
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4349 p4++;
4350
4351 /* here, we have the cookie name between p1 and p2,
4352 * and its value between p3 and p4.
4353 * we can process it.
4354 */
4355
4356 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4357 if (t->be->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4358 txn->srv_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4359 (p4 - p1 >= t->be->capture_namelen) &&
4360 memcmp(p1, t->be->capture_name, t->be->capture_namelen) == 0) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4361 int log_len = p4 - p1;
4362
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]4363 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4364 Alert("HTTP logging : out of memory.\n");
4365 }
4366
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4367 if (log_len > t->be->capture_len)
4368 log_len = t->be->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4369 memcpy(txn->srv_cookie, p1, log_len);
4370 txn->srv_cookie[log_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4371 }
4372
4373 /* now check if we need to process it for persistence */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4374 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4375 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4376 /* Cool... it's the right one */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4377 txn->flags |= TX_SCK_SEEN;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4378
4379 /* If the cookie is in insert mode on a known server, we'll delete
4380 * this occurrence because we'll insert another one later.
4381 * We'll delete it too if the "indirect" option is set and we're in
4382 * a direct access. */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4383 if (((t->srv) && (t->be->options & PR_O_COOK_INS)) ||
4384 ((t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_IND))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4385 /* this header must be deleted */
4386 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4387 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4388 txn->hdr_idx.used--;
4389 cur_hdr->len = 0;
4390 cur_next += delta;
4391 txn->rsp.eoh += delta;
4392
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4393 txn->flags |= TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4394 }
4395 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4396 (t->be->options & PR_O_COOK_RW)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4397 /* replace bytes p3->p4 with the cookie name associated
4398 * with this server since we know it.
4399 */
4400 delta = buffer_replace2(rtr, p3, p4, t->srv->cookie, t->srv->cklen);
4401 cur_hdr->len += delta;
4402 cur_next += delta;
4403 txn->rsp.eoh += delta;
4404
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4405 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4406 }
4407 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4408 (t->be->options & PR_O_COOK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4409 /* insert the cookie name associated with this server
4410 * before existing cookie, and insert a delimitor between them..
4411 */
4412 delta = buffer_replace2(rtr, p3, p3, t->srv->cookie, t->srv->cklen + 1);
4413 cur_hdr->len += delta;
4414 cur_next += delta;
4415 txn->rsp.eoh += delta;
4416
4417 p3[t->srv->cklen] = COOKIE_DELIM;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4418 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4419 }
4420 }
4421 /* next, let's see if the cookie is our appcookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4422 else if ((t->be->appsession_name != NULL) &&
4423 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4424
4425 /* Cool... it's the right one */
4426
4427 size_t server_id_len = strlen(t->srv->id) + 1;
4428 asession_temp = &local_asession;
4429
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4430 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4431 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4432 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4433 return;
4434 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4435 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4436 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4437 asession_temp->serverid = NULL;
4438
4439 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4440 if (appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid) == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4441 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4442 Alert("Not enough Memory process_srv():asession:calloc().\n");
4443 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
4444 return;
4445 }
4446 asession_temp->sessid = local_asession.sessid;
4447 asession_temp->serverid = local_asession.serverid;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4448 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
4449 } else {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4450 /* free wasted memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4451 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4452 }
4453
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4454 if (asession_temp->serverid == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4455 if ((asession_temp->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4456 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4457 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4458 return;
4459 }
4460 asession_temp->serverid[0] = '\0';
4461 }
4462
4463 if (asession_temp->serverid[0] == '\0')
4464 memcpy(asession_temp->serverid, t->srv->id, server_id_len);
4465
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]4466 tv_add(&asession_temp->expire, &now, &t->be->appsession_timeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4467
4468#if defined(DEBUG_HASH)
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4469 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4470#endif
4471 }/* end if ((t->proxy->appsession_name != NULL) ... */
4472 break; /* we don't want to loop again since there cannot be another cookie on the same line */
4473 } /* we're now at the end of the cookie value */
4474
4475 /* keep the link from this header to next one */
4476 old_idx = cur_idx;
4477 } /* end of cookie processing on this header */
4478}
4479
4480
4481
4482/*
4483 * Check if response is cacheable or not. Updates t->flags.
4484 */
4485void check_response_for_cacheability(struct session *t, struct buffer *rtr)
4486{
4487 struct http_txn *txn = &t->txn;
4488 char *p1, *p2;
4489
4490 char *cur_ptr, *cur_end, *cur_next;
4491 int cur_idx;
4492
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]4493 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4494 return;
4495
4496 /* Iterate through the headers.
4497 * we start with the start line.
4498 */
4499 cur_idx = 0;
4500 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4501
4502 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4503 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4504 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4505
4506 cur_hdr = &txn->hdr_idx.v[cur_idx];
4507 cur_ptr = cur_next;
4508 cur_end = cur_ptr + cur_hdr->len;
4509 cur_next = cur_end + cur_hdr->cr + 1;
4510
4511 /* We have one full header between cur_ptr and cur_end, and the
4512 * next header starts at cur_next. We're only interested in
4513 * "Cookie:" headers.
4514 */
4515
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4516 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
4517 if (val) {
4518 if ((cur_end - (cur_ptr + val) >= 8) &&
4519 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
4520 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
4521 return;
4522 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4523 }
4524
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4525 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
4526 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4527 continue;
4528
4529 /* OK, right now we know we have a cache-control header at cur_ptr */
4530
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4531 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4532
4533 if (p1 >= cur_end) /* no more info */
4534 continue;
4535
4536 /* p1 is at the beginning of the value */
4537 p2 = p1;
4538
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4539 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4540 p2++;
4541
4542 /* we have a complete value between p1 and p2 */
4543 if (p2 < cur_end && *p2 == '=') {
4544 /* we have something of the form no-cache="set-cookie" */
4545 if ((cur_end - p1 >= 21) &&
4546 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
4547 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4548 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4549 continue;
4550 }
4551
4552 /* OK, so we know that either p2 points to the end of string or to a comma */
4553 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
4554 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
4555 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
4556 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4557 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4558 return;
4559 }
4560
4561 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4562 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4563 continue;
4564 }
4565 }
4566}
4567
4568
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4569/*
4570 * Try to retrieve a known appsession in the URI, then the associated server.
4571 * If the server is found, it's assigned to the session.
4572 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4573void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4574{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4575 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4576 appsess *asession_temp = NULL;
4577 appsess local_asession;
4578 char *request_line;
4579
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4580 if (t->be->appsession_name == NULL ||
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]4581 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST) ||
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4582 (request_line = memchr(begin, ';', len)) == NULL ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4583 ((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]4584 return;
4585
4586 /* skip ';' */
4587 request_line++;
4588
4589 /* look if we have a jsessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4590 if (strncasecmp(request_line, t->be->appsession_name, t->be->appsession_name_len) != 0)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4591 return;
4592
4593 /* skip jsessionid= */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4594 request_line += t->be->appsession_name_len + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4595
4596 /* First try if we already have an appsession */
4597 asession_temp = &local_asession;
4598
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4599 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4600 Alert("Not enough memory process_cli():asession_temp->sessid:calloc().\n");
4601 send_log(t->be, LOG_ALERT, "Not enough Memory process_cli():asession_temp->sessid:calloc().\n");
4602 return;
4603 }
4604
4605 /* Copy the sessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4606 memcpy(asession_temp->sessid, request_line, t->be->appsession_len);
4607 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4608 asession_temp->serverid = NULL;
4609
4610 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4611 if (appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid) == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4612 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4613 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4614 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4615 Alert("Not enough memory process_cli():asession:calloc().\n");
4616 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4617 return;
4618 }
4619 asession_temp->sessid = local_asession.sessid;
4620 asession_temp->serverid = local_asession.serverid;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4621 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4622 }
4623 else {
4624 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4625 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4626 }
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4627
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]4628 tv_add(&asession_temp->expire, &now, &t->be->appsession_timeout);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4629 asession_temp->request_count++;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4630
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4631#if defined(DEBUG_HASH)
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4632 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4633#endif
4634 if (asession_temp->serverid == NULL) {
4635 Alert("Found Application Session without matching server.\n");
4636 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4637 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4638 while (srv) {
4639 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4640 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4641 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4642 txn->flags &= ~TX_CK_MASK;
4643 txn->flags |= TX_CK_VALID;
4644 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4645 t->srv = srv;
4646 break;
4647 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4648 txn->flags &= ~TX_CK_MASK;
4649 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4650 }
4651 }
4652 srv = srv->next;
4653 }
4654 }
4655}
4656
4657
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4658/*
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4659 * In a GET or HEAD request, check if the requested URI matches the stats uri
4660 * for the current backend, and if an authorization has been passed and is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4661 *
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4662 * 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]4663 * 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]4664 * produce_content() can be called to start sending data.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4665 *
4666 * Returns 1 if the session's state changes, otherwise 0.
4667 */
4668int stats_check_uri_auth(struct session *t, struct proxy *backend)
4669{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4670 struct http_txn *txn = &t->txn;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4671 struct uri_auth *uri_auth = backend->uri_auth;
4672 struct user_auth *user;
4673 int authenticated, cur_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4674 char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4675
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4676 /* check URI size */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4677 if (uri_auth->uri_len > txn->req.sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4678 return 0;
4679
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4680 h = t->req->data + txn->req.sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4681
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4682 /* the URI is in h */
4683 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4684 return 0;
4685
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4686 h += uri_auth->uri_len;
4687 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 3) {
4688 if (memcmp(h, ";up", 3) == 0) {
4689 t->flags |= SN_STAT_HIDEDWN;
4690 break;
4691 }
4692 h++;
4693 }
4694
4695 if (uri_auth->refresh) {
4696 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4697 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 10) {
4698 if (memcmp(h, ";norefresh", 10) == 0) {
4699 t->flags |= SN_STAT_NORFRSH;
4700 break;
4701 }
4702 h++;
4703 }
4704 }
4705
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]4706 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4707 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 4) {
4708 if (memcmp(h, ";csv", 4) == 0) {
4709 t->flags |= SN_STAT_FMTCSV;
4710 break;
4711 }
4712 h++;
4713 }
4714
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4715 /* we are in front of a interceptable URI. Let's check
4716 * if there's an authentication and if it's valid.
4717 */
4718 user = uri_auth->users;
4719 if (!user) {
4720 /* no user auth required, it's OK */
4721 authenticated = 1;
4722 } else {
4723 authenticated = 0;
4724
4725 /* a user list is defined, we have to check.
4726 * skip 21 chars for "Authorization: Basic ".
4727 */
4728
4729 /* FIXME: this should move to an earlier place */
4730 cur_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4731 h = t->req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
4732 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4733 int len = txn->hdr_idx.v[cur_idx].len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4734 if (len > 14 &&
4735 !strncasecmp("Authorization:", h, 14)) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4736 txn->auth_hdr.str = h;
4737 txn->auth_hdr.len = len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4738 break;
4739 }
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4740 h += len + txn->hdr_idx.v[cur_idx].cr + 1;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4741 }
4742
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4743 if (txn->auth_hdr.len < 21 ||
4744 memcmp(txn->auth_hdr.str + 14, " Basic ", 7))
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4745 user = NULL;
4746
4747 while (user) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4748 if ((txn->auth_hdr.len == user->user_len + 14 + 7)
4749 && !memcmp(txn->auth_hdr.str + 14 + 7,
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4750 user->user_pwd, user->user_len)) {
4751 authenticated = 1;
4752 break;
4753 }
4754 user = user->next;
4755 }
4756 }
4757
4758 if (!authenticated) {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4759 struct chunk msg;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4760
4761 /* no need to go further */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4762 msg.str = trash;
4763 msg.len = sprintf(trash, HTTP_401_fmt, uri_auth->auth_realm);
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4764 txn->status = 401;
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4765 client_retnclose(t, &msg);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4766 if (!(t->flags & SN_ERR_MASK))
4767 t->flags |= SN_ERR_PRXCOND;
4768 if (!(t->flags & SN_FINST_MASK))
4769 t->flags |= SN_FINST_R;
4770 return 1;
4771 }
4772
4773 /* The request is valid, the user is authenticate. Let's start sending
4774 * data.
4775 */
4776 t->cli_state = CL_STSHUTR;
4777 t->req->rlim = t->req->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]4778 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4779 t->data_source = DATA_SRC_STATS;
4780 t->data_state = DATA_ST_INIT;
4781 produce_content(t);
4782 return 1;
4783}
4784
4785
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4786/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4787 * Print a debug line with a header
4788 */
4789void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
4790{
4791 int len, max;
4792 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
4793 dir, (unsigned short)t->cli_fd, (unsigned short)t->srv_fd);
4794 max = end - start;
4795 UBOUND(max, sizeof(trash) - len - 1);
4796 len += strlcpy2(trash + len, start, max + 1);
4797 trash[len++] = '\n';
4798 write(1, trash, len);
4799}
4800
4801
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4802/************************************************************************/
4803/* The code below is dedicated to ACL parsing and matching */
4804/************************************************************************/
4805
4806
4807
4808
4809/* 1. Check on METHOD
4810 * We use the pre-parsed method if it is known, and store its number as an
4811 * integer. If it is unknown, we use the pointer and the length.
4812 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4813static int acl_parse_meth(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4814{
4815 int len, meth;
4816
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4817 len = strlen(*text);
4818 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4819
4820 pattern->val.i = meth;
4821 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4822 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4823 if (!pattern->ptr.str)
4824 return 0;
4825 pattern->len = len;
4826 }
4827 return 1;
4828}
4829
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4830static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4831acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, int dir,
4832 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4833{
4834 int meth;
4835 struct http_txn *txn = l7;
4836
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4837 if (txn->req.msg_state != HTTP_MSG_BODY)
4838 return 0;
4839
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4840 meth = txn->meth;
4841 test->i = meth;
4842 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4843 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4844 /* ensure the indexes are not affected */
4845 return 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4846 test->len = txn->req.sl.rq.m_l;
4847 test->ptr = txn->req.sol;
4848 }
4849 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4850 return 1;
4851}
4852
4853static int acl_match_meth(struct acl_test *test, struct acl_pattern *pattern)
4854{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4855 int icase;
4856
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4857 if (test->i != pattern->val.i)
4858 return 0;
4859
4860 if (test->i != HTTP_METH_OTHER)
4861 return 1;
4862
4863 /* Other method, we must compare the strings */
4864 if (pattern->len != test->len)
4865 return 0;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4866
4867 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
4868 if ((icase && strncasecmp(pattern->ptr.str, test->ptr, test->len) != 0) ||
4869 (!icase && strncmp(pattern->ptr.str, test->ptr, test->len) != 0))
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4870 return 0;
4871 return 1;
4872}
4873
4874/* 2. Check on Request/Status Version
4875 * We simply compare strings here.
4876 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4877static int acl_parse_ver(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4878{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4879 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4880 if (!pattern->ptr.str)
4881 return 0;
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4882 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4883 return 1;
4884}
4885
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4886static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4887acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, int dir,
4888 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4889{
4890 struct http_txn *txn = l7;
4891 char *ptr;
4892 int len;
4893
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4894 if (txn->req.msg_state != HTTP_MSG_BODY)
4895 return 0;
4896
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4897 len = txn->req.sl.rq.v_l;
4898 ptr = txn->req.sol + txn->req.sl.rq.v - txn->req.som;
4899
4900 while ((len-- > 0) && (*ptr++ != '/'));
4901 if (len <= 0)
4902 return 0;
4903
4904 test->ptr = ptr;
4905 test->len = len;
4906
4907 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4908 return 1;
4909}
4910
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4911static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4912acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, int dir,
4913 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4914{
4915 struct http_txn *txn = l7;
4916 char *ptr;
4917 int len;
4918
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4919 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4920 return 0;
4921
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4922 len = txn->rsp.sl.st.v_l;
4923 ptr = txn->rsp.sol;
4924
4925 while ((len-- > 0) && (*ptr++ != '/'));
4926 if (len <= 0)
4927 return 0;
4928
4929 test->ptr = ptr;
4930 test->len = len;
4931
4932 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4933 return 1;
4934}
4935
4936/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4937static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4938acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, int dir,
4939 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4940{
4941 struct http_txn *txn = l7;
4942 char *ptr;
4943 int len;
4944
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4945 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4946 return 0;
4947
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4948 len = txn->rsp.sl.st.c_l;
4949 ptr = txn->rsp.sol + txn->rsp.sl.st.c - txn->rsp.som;
4950
4951 test->i = __strl2ui(ptr, len);
4952 test->flags = ACL_TEST_F_VOL_1ST;
4953 return 1;
4954}
4955
4956/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4957static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4958acl_fetch_url(struct proxy *px, struct session *l4, void *l7, int dir,
4959 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4960{
4961 struct http_txn *txn = l7;
4962
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4963 if (txn->req.msg_state != HTTP_MSG_BODY)
4964 return 0;
4965 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4966 /* ensure the indexes are not affected */
4967 return 0;
4968
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4969 test->len = txn->req.sl.rq.u_l;
4970 test->ptr = txn->req.sol + txn->req.sl.rq.u;
4971
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]4972 /* we do not need to set READ_ONLY because the data is in a buffer */
4973 test->flags = ACL_TEST_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4974 return 1;
4975}
4976
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4977static int
4978acl_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, int dir,
4979 struct acl_expr *expr, struct acl_test *test)
4980{
4981 struct http_txn *txn = l7;
4982
4983 if (txn->req.msg_state != HTTP_MSG_BODY)
4984 return 0;
4985 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4986 /* ensure the indexes are not affected */
4987 return 0;
4988
4989 /* Parse HTTP request */
4990 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
4991 test->ptr = (void *)&((struct sockaddr_in *)&l4->srv_addr)->sin_addr;
4992 test->i = AF_INET;
4993
4994 /*
4995 * If we are parsing url in frontend space, we prepare backend stage
4996 * to not parse again the same url ! optimization lazyness...
4997 */
4998 if (px->options & PR_O_HTTP_PROXY)
4999 l4->flags |= SN_ADDR_SET;
5000
5001 test->flags = ACL_TEST_F_READ_ONLY;
5002 return 1;
5003}
5004
5005static int
5006acl_fetch_url_port(struct proxy *px, struct session *l4, void *l7, int dir,
5007 struct acl_expr *expr, struct acl_test *test)
5008{
5009 struct http_txn *txn = l7;
5010
5011 if (txn->req.msg_state != HTTP_MSG_BODY)
5012 return 0;
5013 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5014 /* ensure the indexes are not affected */
5015 return 0;
5016
5017 /* Same optimization as url_ip */
5018 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
5019 test->i = ntohs(((struct sockaddr_in *)&l4->srv_addr)->sin_port);
5020
5021 if (px->options & PR_O_HTTP_PROXY)
5022 l4->flags |= SN_ADDR_SET;
5023
5024 test->flags = ACL_TEST_F_READ_ONLY;
5025 return 1;
5026}
5027
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5028/* 5. Check on HTTP header. A pointer to the beginning of the value is returned.
5029 * This generic function is used by both acl_fetch_chdr() and acl_fetch_shdr().
5030 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5031static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5032acl_fetch_hdr(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5033 struct acl_expr *expr, struct acl_test *test)
5034{
5035 struct http_txn *txn = l7;
5036 struct hdr_idx *idx = &txn->hdr_idx;
5037 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5038
5039 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5040 /* search for header from the beginning */
5041 ctx->idx = 0;
5042
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5043 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5044 test->flags |= ACL_TEST_F_FETCH_MORE;
5045 test->flags |= ACL_TEST_F_VOL_HDR;
5046 test->len = ctx->vlen;
5047 test->ptr = (char *)ctx->line + ctx->val;
5048 return 1;
5049 }
5050
5051 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5052 test->flags |= ACL_TEST_F_VOL_HDR;
5053 return 0;
5054}
5055
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5056static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5057acl_fetch_chdr(struct proxy *px, struct session *l4, void *l7, int dir,
5058 struct acl_expr *expr, struct acl_test *test)
5059{
5060 struct http_txn *txn = l7;
5061
5062 if (txn->req.msg_state != HTTP_MSG_BODY)
5063 return 0;
5064 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5065 /* ensure the indexes are not affected */
5066 return 0;
5067
5068 return acl_fetch_hdr(px, l4, txn, txn->req.sol, expr, test);
5069}
5070
5071static int
5072acl_fetch_shdr(struct proxy *px, struct session *l4, void *l7, int dir,
5073 struct acl_expr *expr, struct acl_test *test)
5074{
5075 struct http_txn *txn = l7;
5076
5077 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5078 return 0;
5079
5080 return acl_fetch_hdr(px, l4, txn, txn->rsp.sol, expr, test);
5081}
5082
5083/* 6. Check on HTTP header count. The number of occurrences is returned.
5084 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
5085 */
5086static int
5087acl_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5088 struct acl_expr *expr, struct acl_test *test)
5089{
5090 struct http_txn *txn = l7;
5091 struct hdr_idx *idx = &txn->hdr_idx;
5092 struct hdr_ctx ctx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5093 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5094
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5095 ctx.idx = 0;
5096 cnt = 0;
5097 while (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, &ctx))
5098 cnt++;
5099
5100 test->i = cnt;
5101 test->flags = ACL_TEST_F_VOL_HDR;
5102 return 1;
5103}
5104
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5105static int
5106acl_fetch_chdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5107 struct acl_expr *expr, struct acl_test *test)
5108{
5109 struct http_txn *txn = l7;
5110
5111 if (txn->req.msg_state != HTTP_MSG_BODY)
5112 return 0;
5113 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5114 /* ensure the indexes are not affected */
5115 return 0;
5116
5117 return acl_fetch_hdr_cnt(px, l4, txn, txn->req.sol, expr, test);
5118}
5119
5120static int
5121acl_fetch_shdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5122 struct acl_expr *expr, struct acl_test *test)
5123{
5124 struct http_txn *txn = l7;
5125
5126 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5127 return 0;
5128
5129 return acl_fetch_hdr_cnt(px, l4, txn, txn->rsp.sol, expr, test);
5130}
5131
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5132/* 7. Check on HTTP header's integer value. The integer value is returned.
5133 * FIXME: the type is 'int', it may not be appropriate for everything.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5134 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5135 */
5136static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5137acl_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5138 struct acl_expr *expr, struct acl_test *test)
5139{
5140 struct http_txn *txn = l7;
5141 struct hdr_idx *idx = &txn->hdr_idx;
5142 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5143
5144 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5145 /* search for header from the beginning */
5146 ctx->idx = 0;
5147
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5148 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5149 test->flags |= ACL_TEST_F_FETCH_MORE;
5150 test->flags |= ACL_TEST_F_VOL_HDR;
5151 test->i = strl2ic((char *)ctx->line + ctx->val, ctx->vlen);
5152 return 1;
5153 }
5154
5155 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5156 test->flags |= ACL_TEST_F_VOL_HDR;
5157 return 0;
5158}
5159
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5160static int
5161acl_fetch_chdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5162 struct acl_expr *expr, struct acl_test *test)
5163{
5164 struct http_txn *txn = l7;
5165
5166 if (txn->req.msg_state != HTTP_MSG_BODY)
5167 return 0;
5168 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5169 /* ensure the indexes are not affected */
5170 return 0;
5171
5172 return acl_fetch_hdr_val(px, l4, txn, txn->req.sol, expr, test);
5173}
5174
5175static int
5176acl_fetch_shdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5177 struct acl_expr *expr, struct acl_test *test)
5178{
5179 struct http_txn *txn = l7;
5180
5181 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5182 return 0;
5183
5184 return acl_fetch_hdr_val(px, l4, txn, txn->rsp.sol, expr, test);
5185}
5186
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5187/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
5188 * the first '/' after the possible hostname, and ends before the possible '?'.
5189 */
5190static int
5191acl_fetch_path(struct proxy *px, struct session *l4, void *l7, int dir,
5192 struct acl_expr *expr, struct acl_test *test)
5193{
5194 struct http_txn *txn = l7;
5195 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5196
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5197 if (txn->req.msg_state != HTTP_MSG_BODY)
5198 return 0;
5199 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5200 /* ensure the indexes are not affected */
5201 return 0;
5202
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5203 ptr = txn->req.sol + txn->req.sl.rq.u;
5204 end = ptr + txn->req.sl.rq.u_l;
5205
5206 if (ptr >= end)
5207 return 0;
5208
5209 /* RFC2616, par. 5.1.2 :
5210 * Request-URI = "*" | absuri | abspath | authority
5211 */
5212
5213 if (*ptr == '*')
5214 return 0;
5215
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]5216 if (isalpha((unsigned char)*ptr)) {
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5217 /* this is a scheme as described by RFC3986, par. 3.1 */
5218 ptr++;
5219 while (ptr < end &&
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]5220 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5221 ptr++;
5222 /* skip '://' */
5223 if (ptr == end || *ptr++ != ':')
5224 return 0;
5225 if (ptr == end || *ptr++ != '/')
5226 return 0;
5227 if (ptr == end || *ptr++ != '/')
5228 return 0;
5229 }
5230 /* skip [user[:passwd]@]host[:[port]] */
5231
5232 while (ptr < end && *ptr != '/')
5233 ptr++;
5234
5235 if (ptr == end)
5236 return 0;
5237
5238 /* OK, we got the '/' ! */
5239 test->ptr = ptr;
5240
5241 while (ptr < end && *ptr != '?')
5242 ptr++;
5243
5244 test->len = ptr - test->ptr;
5245
5246 /* we do not need to set READ_ONLY because the data is in a buffer */
5247 test->flags = ACL_TEST_F_VOL_1ST;
5248 return 1;
5249}
5250
5251
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5252
5253/************************************************************************/
5254/* All supported keywords must be declared here. */
5255/************************************************************************/
5256
5257/* Note: must not be declared <const> as its list will be overwritten */
5258static struct acl_kw_list acl_kws = {{ },{
5259 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth },
5260 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str },
5261 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str },
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5262 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5263
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5264 { "url", acl_parse_str, acl_fetch_url, acl_match_str },
5265 { "url_beg", acl_parse_str, acl_fetch_url, acl_match_beg },
5266 { "url_end", acl_parse_str, acl_fetch_url, acl_match_end },
5267 { "url_sub", acl_parse_str, acl_fetch_url, acl_match_sub },
5268 { "url_dir", acl_parse_str, acl_fetch_url, acl_match_dir },
5269 { "url_dom", acl_parse_str, acl_fetch_url, acl_match_dom },
5270 { "url_reg", acl_parse_reg, acl_fetch_url, acl_match_reg },
5271 { "url_ip", acl_parse_ip, acl_fetch_url_ip, acl_match_ip },
5272 { "url_port", acl_parse_int, acl_fetch_url_port, acl_match_int },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5273
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5274 { "hdr", acl_parse_str, acl_fetch_chdr, acl_match_str },
5275 { "hdr_reg", acl_parse_reg, acl_fetch_chdr, acl_match_reg },
5276 { "hdr_beg", acl_parse_str, acl_fetch_chdr, acl_match_beg },
5277 { "hdr_end", acl_parse_str, acl_fetch_chdr, acl_match_end },
5278 { "hdr_sub", acl_parse_str, acl_fetch_chdr, acl_match_sub },
5279 { "hdr_dir", acl_parse_str, acl_fetch_chdr, acl_match_dir },
5280 { "hdr_dom", acl_parse_str, acl_fetch_chdr, acl_match_dom },
5281 { "hdr_cnt", acl_parse_int, acl_fetch_chdr_cnt,acl_match_int },
5282 { "hdr_val", acl_parse_int, acl_fetch_chdr_val,acl_match_int },
5283
5284 { "shdr", acl_parse_str, acl_fetch_shdr, acl_match_str },
5285 { "shdr_reg", acl_parse_reg, acl_fetch_shdr, acl_match_reg },
5286 { "shdr_beg", acl_parse_str, acl_fetch_shdr, acl_match_beg },
5287 { "shdr_end", acl_parse_str, acl_fetch_shdr, acl_match_end },
5288 { "shdr_sub", acl_parse_str, acl_fetch_shdr, acl_match_sub },
5289 { "shdr_dir", acl_parse_str, acl_fetch_shdr, acl_match_dir },
5290 { "shdr_dom", acl_parse_str, acl_fetch_shdr, acl_match_dom },
5291 { "shdr_cnt", acl_parse_int, acl_fetch_shdr_cnt,acl_match_int },
5292 { "shdr_val", acl_parse_int, acl_fetch_shdr_val,acl_match_int },
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5293
5294 { "path", acl_parse_str, acl_fetch_path, acl_match_str },
5295 { "path_reg", acl_parse_reg, acl_fetch_path, acl_match_reg },
5296 { "path_beg", acl_parse_str, acl_fetch_path, acl_match_beg },
5297 { "path_end", acl_parse_str, acl_fetch_path, acl_match_end },
5298 { "path_sub", acl_parse_str, acl_fetch_path, acl_match_sub },
5299 { "path_dir", acl_parse_str, acl_fetch_path, acl_match_dir },
5300 { "path_dom", acl_parse_str, acl_fetch_path, acl_match_dom },
5301
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]5302 { NULL, NULL, NULL, NULL },
5303
5304#if 0
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5305 { "line", acl_parse_str, acl_fetch_line, acl_match_str },
5306 { "line_reg", acl_parse_reg, acl_fetch_line, acl_match_reg },
5307 { "line_beg", acl_parse_str, acl_fetch_line, acl_match_beg },
5308 { "line_end", acl_parse_str, acl_fetch_line, acl_match_end },
5309 { "line_sub", acl_parse_str, acl_fetch_line, acl_match_sub },
5310 { "line_dir", acl_parse_str, acl_fetch_line, acl_match_dir },
5311 { "line_dom", acl_parse_str, acl_fetch_line, acl_match_dom },
5312
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5313 { "cook", acl_parse_str, acl_fetch_cook, acl_match_str },
5314 { "cook_reg", acl_parse_reg, acl_fetch_cook, acl_match_reg },
5315 { "cook_beg", acl_parse_str, acl_fetch_cook, acl_match_beg },
5316 { "cook_end", acl_parse_str, acl_fetch_cook, acl_match_end },
5317 { "cook_sub", acl_parse_str, acl_fetch_cook, acl_match_sub },
5318 { "cook_dir", acl_parse_str, acl_fetch_cook, acl_match_dir },
5319 { "cook_dom", acl_parse_str, acl_fetch_cook, acl_match_dom },
5320 { "cook_pst", acl_parse_none, acl_fetch_cook, acl_match_pst },
5321
5322 { "auth_user", acl_parse_str, acl_fetch_user, acl_match_str },
5323 { "auth_regex", acl_parse_reg, acl_fetch_user, acl_match_reg },
5324 { "auth_clear", acl_parse_str, acl_fetch_auth, acl_match_str },
5325 { "auth_md5", acl_parse_str, acl_fetch_auth, acl_match_md5 },
5326 { NULL, NULL, NULL, NULL },
5327#endif
5328}};
5329
5330
5331__attribute__((constructor))
5332static void __http_protocol_init(void)
5333{
5334 acl_register_keywords(&acl_kws);
5335}
5336
5337
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5338/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5339 * Local variables:
5340 * c-indent-level: 8
5341 * c-basic-offset: 8
5342 * End:
5343 */