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git01.mediatek.com / haproxy / 50fd1e1e3bf7cdd383a906c511a2e77e9ac5205d / . / src / proto_http.c
blob: 0fa40cc217dd602c85aa9ed55f66325f6b7de259 [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 Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]595/* Parse the URI from the given transaction (which is assumed to be in request
596 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
597 * It is returned otherwise.
598 */
599static char *
600http_get_path(struct http_txn *txn)
601{
602 char *ptr, *end;
603
604 ptr = txn->req.sol + txn->req.sl.rq.u;
605 end = ptr + txn->req.sl.rq.u_l;
606
607 if (ptr >= end)
608 return NULL;
609
610 /* RFC2616, par. 5.1.2 :
611 * Request-URI = "*" | absuri | abspath | authority
612 */
613
614 if (*ptr == '*')
615 return NULL;
616
617 if (isalpha((unsigned char)*ptr)) {
618 /* this is a scheme as described by RFC3986, par. 3.1 */
619 ptr++;
620 while (ptr < end &&
621 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
622 ptr++;
623 /* skip '://' */
624 if (ptr == end || *ptr++ != ':')
625 return NULL;
626 if (ptr == end || *ptr++ != '/')
627 return NULL;
628 if (ptr == end || *ptr++ != '/')
629 return NULL;
630 }
631 /* skip [user[:passwd]@]host[:[port]] */
632
633 while (ptr < end && *ptr != '/')
634 ptr++;
635
636 if (ptr == end)
637 return NULL;
638
639 /* OK, we got the '/' ! */
640 return ptr;
641}
642
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]643/* Processes the client and server jobs of a session task, then
644 * puts it back to the wait queue in a clean state, or
645 * cleans up its resources if it must be deleted. Returns
646 * the time the task accepts to wait, or TIME_ETERNITY for
647 * infinity.
648 */
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]649void process_session(struct task *t, struct timeval *next)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]650{
651 struct session *s = t->context;
652 int fsm_resync = 0;
653
654 do {
655 fsm_resync = 0;
656 //fprintf(stderr,"before_cli:cli=%d, srv=%d\n", s->cli_state, s->srv_state);
657 fsm_resync |= process_cli(s);
658 //fprintf(stderr,"cli/srv:cli=%d, srv=%d\n", s->cli_state, s->srv_state);
659 fsm_resync |= process_srv(s);
660 //fprintf(stderr,"after_srv:cli=%d, srv=%d\n", s->cli_state, s->srv_state);
661 } while (fsm_resync);
662
Willy Tarreauf41d4b12007-04-28 23:26:14 +0200[diff] [blame]663 if (likely(s->cli_state != CL_STCLOSE || s->srv_state != SV_STCLOSE)) {
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100[diff] [blame]664
665 if ((s->fe->options & PR_O_CONTSTATS) && (s->flags & SN_BE_ASSIGNED))
666 session_process_counters(s);
667
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]668 s->req->flags &= BF_CLEAR_READ & BF_CLEAR_WRITE;
669 s->rep->flags &= BF_CLEAR_READ & BF_CLEAR_WRITE;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]670
Willy Tarreaua6a6a932007-04-28 22:40:08 +0200[diff] [blame]671 tv_min(&t->expire, &s->req->rex, &s->req->wex);
672 tv_bound(&t->expire, &s->req->cex);
673 tv_bound(&t->expire, &s->rep->rex);
674 tv_bound(&t->expire, &s->rep->wex);
Willy Tarreau036fae02008-01-06 13:24:40 +0100[diff] [blame]675 if (s->cli_state == CL_STHEADERS)
676 tv_bound(&t->expire, &s->txn.exp);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]677
678 /* restore t to its place in the task list */
679 task_queue(t);
680
681#ifdef DEBUG_FULL
682 /* DEBUG code : this should never ever happen, otherwise it indicates
683 * that a task still has something to do and will provoke a quick loop.
684 */
Willy Tarreaub8816082008-01-18 12:18:15 +0100[diff] [blame]685 if (tv_ms_remain2(&now, &t->expire) <= 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]686 exit(100);
687#endif
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]688 *next = t->expire;
689 return; /* nothing more to do */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]690 }
691
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]692 s->fe->feconn--;
693 if (s->flags & SN_BE_ASSIGNED)
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]694 s->be->beconn--;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]695 actconn--;
696
Willy Tarreauf41d4b12007-04-28 23:26:14 +0200[diff] [blame]697 if (unlikely((global.mode & MODE_DEBUG) &&
698 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]699 int len;
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]700 len = sprintf(trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]701 s->uniq_id, s->be->id,
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]702 (unsigned short)s->cli_fd, (unsigned short)s->srv_fd);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]703 write(1, trash, len);
704 }
705
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]706 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100[diff] [blame]707 session_process_counters(s);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]708
709 /* let's do a final log if we need it */
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]710 if (s->logs.logwait &&
711 !(s->flags & SN_MONITOR) &&
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]712 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
713 if (s->fe->to_log & LW_REQ)
714 http_sess_log(s);
715 else
716 tcp_sess_log(s);
717 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]718
719 /* the task MUST not be in the run queue anymore */
720 task_delete(t);
721 session_free(s);
722 task_free(t);
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]723 tv_eternity(next);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]724}
725
726
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]727extern const char sess_term_cond[8];
728extern const char sess_fin_state[8];
729extern const char *monthname[12];
730const char sess_cookie[4] = "NIDV"; /* No cookie, Invalid cookie, cookie for a Down server, Valid cookie */
731const char sess_set_cookie[8] = "N1I3PD5R"; /* No set-cookie, unknown, Set-Cookie Inserted, unknown,
732 Set-cookie seen and left unchanged (passive), Set-cookie Deleted,
733 unknown, Set-cookie Rewritten */
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]734struct pool_head *pool2_requri;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]735struct pool_head *pool2_capture;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]736
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]737/*
738 * send a log for the session when we have enough info about it.
739 * Will not log if the frontend has no log defined.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]740 */
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]741static void http_sess_log(struct session *s)
742{
743 char pn[INET6_ADDRSTRLEN + strlen(":65535")];
744 struct proxy *fe = s->fe;
745 struct proxy *be = s->be;
746 struct proxy *prx_log;
747 struct http_txn *txn = &s->txn;
748 int tolog;
749 char *uri, *h;
750 char *svid;
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]751 struct tm tm;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]752 static char tmpline[MAX_SYSLOG_LEN];
753 int hdr;
754
755 if (fe->logfac1 < 0 && fe->logfac2 < 0)
756 return;
757 prx_log = fe;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]758
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]759 if (s->cli_addr.ss_family == AF_INET)
760 inet_ntop(AF_INET,
761 (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
762 pn, sizeof(pn));
763 else
764 inet_ntop(AF_INET6,
765 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
766 pn, sizeof(pn));
767
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]768 get_localtime(s->logs.tv_accept.tv_sec, &tm);
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]769
770 /* FIXME: let's limit ourselves to frontend logging for now. */
771 tolog = fe->to_log;
772
773 h = tmpline;
774 if (fe->to_log & LW_REQHDR &&
775 txn->req.cap &&
776 (h < tmpline + sizeof(tmpline) - 10)) {
777 *(h++) = ' ';
778 *(h++) = '{';
779 for (hdr = 0; hdr < fe->nb_req_cap; hdr++) {
780 if (hdr)
781 *(h++) = '|';
782 if (txn->req.cap[hdr] != NULL)
783 h = encode_string(h, tmpline + sizeof(tmpline) - 7,
784 '#', hdr_encode_map, txn->req.cap[hdr]);
785 }
786 *(h++) = '}';
787 }
788
789 if (fe->to_log & LW_RSPHDR &&
790 txn->rsp.cap &&
791 (h < tmpline + sizeof(tmpline) - 7)) {
792 *(h++) = ' ';
793 *(h++) = '{';
794 for (hdr = 0; hdr < fe->nb_rsp_cap; hdr++) {
795 if (hdr)
796 *(h++) = '|';
797 if (txn->rsp.cap[hdr] != NULL)
798 h = encode_string(h, tmpline + sizeof(tmpline) - 4,
799 '#', hdr_encode_map, txn->rsp.cap[hdr]);
800 }
801 *(h++) = '}';
802 }
803
804 if (h < tmpline + sizeof(tmpline) - 4) {
805 *(h++) = ' ';
806 *(h++) = '"';
807 uri = txn->uri ? txn->uri : "<BADREQ>";
808 h = encode_string(h, tmpline + sizeof(tmpline) - 1,
809 '#', url_encode_map, uri);
810 *(h++) = '"';
811 }
812 *h = '\0';
813
814 svid = (tolog & LW_SVID) ?
815 (s->data_source != DATA_SRC_STATS) ?
816 (s->srv != NULL) ? s->srv->id : "<NOSRV>" : "<STATS>" : "-";
817
818 send_log(prx_log, LOG_INFO,
819 "%s:%d [%02d/%s/%04d:%02d:%02d:%02d.%03d]"
820 " %s %s/%s %d/%d/%d/%d/%s%d %d %s%lld"
Krzysztof Piotr Oledzki25b501a2008-01-06 16:36:16 +0100[diff] [blame]821 " %s %s %c%c%c%c %d/%d/%d/%d/%s%u %d/%d%s\n",
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]822 pn,
823 (s->cli_addr.ss_family == AF_INET) ?
824 ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port) :
825 ntohs(((struct sockaddr_in6 *)&s->cli_addr)->sin6_port),
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]826 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
827 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]828 fe->id, be->id, svid,
829 s->logs.t_request,
830 (s->logs.t_queue >= 0) ? s->logs.t_queue - s->logs.t_request : -1,
831 (s->logs.t_connect >= 0) ? s->logs.t_connect - s->logs.t_queue : -1,
832 (s->logs.t_data >= 0) ? s->logs.t_data - s->logs.t_connect : -1,
833 (tolog & LW_BYTES) ? "" : "+", s->logs.t_close,
834 txn->status,
Willy Tarreau8b3977f2008-01-18 11:16:32 +0100[diff] [blame]835 (tolog & LW_BYTES) ? "" : "+", s->logs.bytes_out,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]836 txn->cli_cookie ? txn->cli_cookie : "-",
837 txn->srv_cookie ? txn->srv_cookie : "-",
838 sess_term_cond[(s->flags & SN_ERR_MASK) >> SN_ERR_SHIFT],
839 sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_FINST_SHIFT],
840 (be->options & PR_O_COOK_ANY) ? sess_cookie[(txn->flags & TX_CK_MASK) >> TX_CK_SHIFT] : '-',
841 (be->options & PR_O_COOK_ANY) ? sess_set_cookie[(txn->flags & TX_SCK_MASK) >> TX_SCK_SHIFT] : '-',
842 actconn, fe->feconn, be->beconn, s->srv ? s->srv->cur_sess : 0,
Krzysztof Piotr Oledzki25b501a2008-01-06 16:36:16 +0100[diff] [blame]843 (s->flags & SN_REDISP)?"+":"",
844 (s->conn_retries>0)?(be->conn_retries - s->conn_retries):be->conn_retries,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]845 s->logs.srv_queue_size, s->logs.prx_queue_size, tmpline);
846
847 s->logs.logwait = 0;
848}
849
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]850
851/*
852 * Capture headers from message starting at <som> according to header list
853 * <cap_hdr>, and fill the <idx> structure appropriately.
854 */
855void capture_headers(char *som, struct hdr_idx *idx,
856 char **cap, struct cap_hdr *cap_hdr)
857{
858 char *eol, *sol, *col, *sov;
859 int cur_idx;
860 struct cap_hdr *h;
861 int len;
862
863 sol = som + hdr_idx_first_pos(idx);
864 cur_idx = hdr_idx_first_idx(idx);
865
866 while (cur_idx) {
867 eol = sol + idx->v[cur_idx].len;
868
869 col = sol;
870 while (col < eol && *col != ':')
871 col++;
872
873 sov = col + 1;
874 while (sov < eol && http_is_lws[(unsigned char)*sov])
875 sov++;
876
877 for (h = cap_hdr; h; h = h->next) {
878 if ((h->namelen == col - sol) &&
879 (strncasecmp(sol, h->name, h->namelen) == 0)) {
880 if (cap[h->index] == NULL)
881 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]882 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]883
884 if (cap[h->index] == NULL) {
885 Alert("HTTP capture : out of memory.\n");
886 continue;
887 }
888
889 len = eol - sov;
890 if (len > h->len)
891 len = h->len;
892
893 memcpy(cap[h->index], sov, len);
894 cap[h->index][len]=0;
895 }
896 }
897 sol = eol + idx->v[cur_idx].cr + 1;
898 cur_idx = idx->v[cur_idx].next;
899 }
900}
901
902
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]903/* either we find an LF at <ptr> or we jump to <bad>.
904 */
905#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
906
907/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
908 * otherwise to <http_msg_ood> with <state> set to <st>.
909 */
910#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
911 ptr++; \
912 if (likely(ptr < end)) \
913 goto good; \
914 else { \
915 state = (st); \
916 goto http_msg_ood; \
917 } \
918 } while (0)
919
920
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]921/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]922 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]923 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
924 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
925 * will give undefined results.
926 * Note that it is upon the caller's responsibility to ensure that ptr < end,
927 * and that msg->sol points to the beginning of the response.
928 * If a complete line is found (which implies that at least one CR or LF is
929 * found before <end>, the updated <ptr> is returned, otherwise NULL is
930 * returned indicating an incomplete line (which does not mean that parts have
931 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
932 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
933 * upon next call.
934 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]935 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]936 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
937 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]938 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]939 */
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]940const char *http_parse_stsline(struct http_msg *msg, const char *msg_buf,
941 unsigned int state, const char *ptr, const char *end,
942 char **ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]943{
944 __label__
945 http_msg_rpver,
946 http_msg_rpver_sp,
947 http_msg_rpcode,
948 http_msg_rpcode_sp,
949 http_msg_rpreason,
950 http_msg_rpline_eol,
951 http_msg_ood, /* out of data */
952 http_msg_invalid;
953
954 switch (state) {
955 http_msg_rpver:
956 case HTTP_MSG_RPVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]957 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]958 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
959
960 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]961 msg->sl.st.v_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]962 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
963 }
964 goto http_msg_invalid;
965
966 http_msg_rpver_sp:
967 case HTTP_MSG_RPVER_SP:
968 if (likely(!HTTP_IS_LWS(*ptr))) {
969 msg->sl.st.c = ptr - msg_buf;
970 goto http_msg_rpcode;
971 }
972 if (likely(HTTP_IS_SPHT(*ptr)))
973 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
974 /* so it's a CR/LF, this is invalid */
975 goto http_msg_invalid;
976
977 http_msg_rpcode:
978 case HTTP_MSG_RPCODE:
979 if (likely(!HTTP_IS_LWS(*ptr)))
980 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
981
982 if (likely(HTTP_IS_SPHT(*ptr))) {
983 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
984 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
985 }
986
987 /* so it's a CR/LF, so there is no reason phrase */
988 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
989 http_msg_rsp_reason:
990 /* FIXME: should we support HTTP responses without any reason phrase ? */
991 msg->sl.st.r = ptr - msg_buf;
992 msg->sl.st.r_l = 0;
993 goto http_msg_rpline_eol;
994
995 http_msg_rpcode_sp:
996 case HTTP_MSG_RPCODE_SP:
997 if (likely(!HTTP_IS_LWS(*ptr))) {
998 msg->sl.st.r = ptr - msg_buf;
999 goto http_msg_rpreason;
1000 }
1001 if (likely(HTTP_IS_SPHT(*ptr)))
1002 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1003 /* so it's a CR/LF, so there is no reason phrase */
1004 goto http_msg_rsp_reason;
1005
1006 http_msg_rpreason:
1007 case HTTP_MSG_RPREASON:
1008 if (likely(!HTTP_IS_CRLF(*ptr)))
1009 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
1010 msg->sl.st.r_l = (ptr - msg_buf) - msg->sl.st.r;
1011 http_msg_rpline_eol:
1012 /* We have seen the end of line. Note that we do not
1013 * necessarily have the \n yet, but at least we know that we
1014 * have EITHER \r OR \n, otherwise the response would not be
1015 * complete. We can then record the response length and return
1016 * to the caller which will be able to register it.
1017 */
1018 msg->sl.st.l = ptr - msg->sol;
1019 return ptr;
1020
1021#ifdef DEBUG_FULL
1022 default:
1023 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1024 exit(1);
1025#endif
1026 }
1027
1028 http_msg_ood:
1029 /* out of data */
1030 if (ret_state)
1031 *ret_state = state;
1032 if (ret_ptr)
1033 *ret_ptr = (char *)ptr;
1034 return NULL;
1035
1036 http_msg_invalid:
1037 /* invalid message */
1038 if (ret_state)
1039 *ret_state = HTTP_MSG_ERROR;
1040 return NULL;
1041}
1042
1043
1044/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1045 * This function parses a request line between <ptr> and <end>, starting with
1046 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1047 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1048 * will give undefined results.
1049 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1050 * and that msg->sol points to the beginning of the request.
1051 * If a complete line is found (which implies that at least one CR or LF is
1052 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1053 * returned indicating an incomplete line (which does not mean that parts have
1054 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1055 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1056 * upon next call.
1057 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1058 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1059 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1060 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1061 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1062 */
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1063const char *http_parse_reqline(struct http_msg *msg, const char *msg_buf,
1064 unsigned int state, const char *ptr, const char *end,
1065 char **ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1066{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1067 __label__
1068 http_msg_rqmeth,
1069 http_msg_rqmeth_sp,
1070 http_msg_rquri,
1071 http_msg_rquri_sp,
1072 http_msg_rqver,
1073 http_msg_rqline_eol,
1074 http_msg_ood, /* out of data */
1075 http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1076
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1077 switch (state) {
1078 http_msg_rqmeth:
1079 case HTTP_MSG_RQMETH:
1080 if (likely(HTTP_IS_TOKEN(*ptr)))
1081 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1082
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1083 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1084 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1085 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1086 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1087
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1088 if (likely(HTTP_IS_CRLF(*ptr))) {
1089 /* HTTP 0.9 request */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1090 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1091 http_msg_req09_uri:
1092 msg->sl.rq.u = ptr - msg_buf;
1093 http_msg_req09_uri_e:
1094 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1095 http_msg_req09_ver:
1096 msg->sl.rq.v = ptr - msg_buf;
1097 msg->sl.rq.v_l = 0;
1098 goto http_msg_rqline_eol;
1099 }
1100 goto http_msg_invalid;
1101
1102 http_msg_rqmeth_sp:
1103 case HTTP_MSG_RQMETH_SP:
1104 if (likely(!HTTP_IS_LWS(*ptr))) {
1105 msg->sl.rq.u = ptr - msg_buf;
1106 goto http_msg_rquri;
1107 }
1108 if (likely(HTTP_IS_SPHT(*ptr)))
1109 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1110 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1111 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1112
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1113 http_msg_rquri:
1114 case HTTP_MSG_RQURI:
1115 if (likely(!HTTP_IS_LWS(*ptr)))
1116 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1117
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1118 if (likely(HTTP_IS_SPHT(*ptr))) {
1119 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1120 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1121 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1122
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1123 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1124 goto http_msg_req09_uri_e;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1125
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1126 http_msg_rquri_sp:
1127 case HTTP_MSG_RQURI_SP:
1128 if (likely(!HTTP_IS_LWS(*ptr))) {
1129 msg->sl.rq.v = ptr - msg_buf;
1130 goto http_msg_rqver;
1131 }
1132 if (likely(HTTP_IS_SPHT(*ptr)))
1133 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1134 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1135 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1136
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1137 http_msg_rqver:
1138 case HTTP_MSG_RQVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1139 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1140 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1141
1142 if (likely(HTTP_IS_CRLF(*ptr))) {
1143 msg->sl.rq.v_l = (ptr - msg_buf) - msg->sl.rq.v;
1144 http_msg_rqline_eol:
1145 /* We have seen the end of line. Note that we do not
1146 * necessarily have the \n yet, but at least we know that we
1147 * have EITHER \r OR \n, otherwise the request would not be
1148 * complete. We can then record the request length and return
1149 * to the caller which will be able to register it.
1150 */
1151 msg->sl.rq.l = ptr - msg->sol;
1152 return ptr;
1153 }
1154
1155 /* neither an HTTP_VER token nor a CRLF */
1156 goto 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#ifdef DEBUG_FULL
1159 default:
1160 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1161 exit(1);
1162#endif
1163 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1164
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1165 http_msg_ood:
1166 /* out of data */
1167 if (ret_state)
1168 *ret_state = state;
1169 if (ret_ptr)
1170 *ret_ptr = (char *)ptr;
1171 return NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1172
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1173 http_msg_invalid:
1174 /* invalid message */
1175 if (ret_state)
1176 *ret_state = HTTP_MSG_ERROR;
1177 return NULL;
1178}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1179
1180
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1181/*
1182 * This function parses an HTTP message, either a request or a response,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1183 * depending on the initial msg->msg_state. It can be preempted everywhere
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1184 * when data are missing and recalled at the exact same location with no
1185 * information loss. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1186 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
1187 * fields.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1188 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1189void http_msg_analyzer(struct buffer *buf, struct http_msg *msg, struct hdr_idx *idx)
1190{
1191 __label__
1192 http_msg_rqbefore,
1193 http_msg_rqbefore_cr,
1194 http_msg_rqmeth,
1195 http_msg_rqline_end,
1196 http_msg_hdr_first,
1197 http_msg_hdr_name,
1198 http_msg_hdr_l1_sp,
1199 http_msg_hdr_l1_lf,
1200 http_msg_hdr_l1_lws,
1201 http_msg_hdr_val,
1202 http_msg_hdr_l2_lf,
1203 http_msg_hdr_l2_lws,
1204 http_msg_complete_header,
1205 http_msg_last_lf,
1206 http_msg_ood, /* out of data */
1207 http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1208
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1209 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1210 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1211
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1212 state = msg->msg_state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1213 ptr = buf->lr;
1214 end = buf->r;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1215
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1216 if (unlikely(ptr >= end))
1217 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1218
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1219 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1220 /*
1221 * First, states that are specific to the response only.
1222 * We check them first so that request and headers are
1223 * closer to each other (accessed more often).
1224 */
1225 http_msg_rpbefore:
1226 case HTTP_MSG_RPBEFORE:
1227 if (likely(HTTP_IS_TOKEN(*ptr))) {
1228 if (likely(ptr == buf->data)) {
1229 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1230 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1231 } else {
1232#if PARSE_PRESERVE_EMPTY_LINES
1233 /* only skip empty leading lines, don't remove them */
1234 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1235 msg->som = ptr - buf->data;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1236#else
1237 /* Remove empty leading lines, as recommended by
1238 * RFC2616. This takes a lot of time because we
1239 * must move all the buffer backwards, but this
1240 * is rarely needed. The method above will be
1241 * cleaner when we'll be able to start sending
1242 * the request from any place in the buffer.
1243 */
1244 buf->lr = ptr;
1245 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1246 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1247 msg->sol = buf->data;
1248 ptr = buf->data;
1249 end = buf->r;
1250#endif
1251 }
1252 hdr_idx_init(idx);
1253 state = HTTP_MSG_RPVER;
1254 goto http_msg_rpver;
1255 }
1256
1257 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1258 goto http_msg_invalid;
1259
1260 if (unlikely(*ptr == '\n'))
1261 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1262 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1263 /* stop here */
1264
1265 http_msg_rpbefore_cr:
1266 case HTTP_MSG_RPBEFORE_CR:
1267 EXPECT_LF_HERE(ptr, http_msg_invalid);
1268 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1269 /* stop here */
1270
1271 http_msg_rpver:
1272 case HTTP_MSG_RPVER:
1273 case HTTP_MSG_RPVER_SP:
1274 case HTTP_MSG_RPCODE:
1275 case HTTP_MSG_RPCODE_SP:
1276 case HTTP_MSG_RPREASON:
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1277 ptr = (char *)http_parse_stsline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1278 &buf->lr, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1279 if (unlikely(!ptr))
1280 return;
1281
1282 /* we have a full response and we know that we have either a CR
1283 * or an LF at <ptr>.
1284 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1285 //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]1286 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1287
1288 msg->sol = ptr;
1289 if (likely(*ptr == '\r'))
1290 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1291 goto http_msg_rpline_end;
1292
1293 http_msg_rpline_end:
1294 case HTTP_MSG_RPLINE_END:
1295 /* msg->sol must point to the first of CR or LF. */
1296 EXPECT_LF_HERE(ptr, http_msg_invalid);
1297 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1298 /* stop here */
1299
1300 /*
1301 * Second, states that are specific to the request only
1302 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1303 http_msg_rqbefore:
1304 case HTTP_MSG_RQBEFORE:
1305 if (likely(HTTP_IS_TOKEN(*ptr))) {
1306 if (likely(ptr == buf->data)) {
1307 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1308 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1309 } else {
1310#if PARSE_PRESERVE_EMPTY_LINES
1311 /* only skip empty leading lines, don't remove them */
1312 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1313 msg->som = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1314#else
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1315 /* Remove empty leading lines, as recommended by
1316 * RFC2616. This takes a lot of time because we
1317 * must move all the buffer backwards, but this
1318 * is rarely needed. The method above will be
1319 * cleaner when we'll be able to start sending
1320 * the request from any place in the buffer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1321 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1322 buf->lr = ptr;
1323 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1324 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1325 msg->sol = buf->data;
1326 ptr = buf->data;
1327 end = buf->r;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1328#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1329 }
Willy Tarreauf0d058e2007-01-25 12:03:42 +0100[diff] [blame]1330 /* we will need this when keep-alive will be supported
1331 hdr_idx_init(idx);
1332 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1333 state = HTTP_MSG_RQMETH;
1334 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1335 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1336
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1337 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1338 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1339
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1340 if (unlikely(*ptr == '\n'))
1341 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1342 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1343 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1344
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1345 http_msg_rqbefore_cr:
1346 case HTTP_MSG_RQBEFORE_CR:
1347 EXPECT_LF_HERE(ptr, http_msg_invalid);
1348 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1349 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1350
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1351 http_msg_rqmeth:
1352 case HTTP_MSG_RQMETH:
1353 case HTTP_MSG_RQMETH_SP:
1354 case HTTP_MSG_RQURI:
1355 case HTTP_MSG_RQURI_SP:
1356 case HTTP_MSG_RQVER:
1357 ptr = (char *)http_parse_reqline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1358 &buf->lr, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1359 if (unlikely(!ptr))
1360 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1361
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1362 /* we have a full request and we know that we have either a CR
1363 * or an LF at <ptr>.
1364 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1365 //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]1366 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1367
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1368 msg->sol = ptr;
1369 if (likely(*ptr == '\r'))
1370 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1371 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1372
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1373 http_msg_rqline_end:
1374 case HTTP_MSG_RQLINE_END:
1375 /* check for HTTP/0.9 request : no version information available.
1376 * msg->sol must point to the first of CR or LF.
1377 */
1378 if (unlikely(msg->sl.rq.v_l == 0))
1379 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1380
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1381 EXPECT_LF_HERE(ptr, http_msg_invalid);
1382 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1383 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1384
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1385 /*
1386 * Common states below
1387 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1388 http_msg_hdr_first:
1389 case HTTP_MSG_HDR_FIRST:
1390 msg->sol = ptr;
1391 if (likely(!HTTP_IS_CRLF(*ptr))) {
1392 goto http_msg_hdr_name;
1393 }
1394
1395 if (likely(*ptr == '\r'))
1396 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1397 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1398
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1399 http_msg_hdr_name:
1400 case HTTP_MSG_HDR_NAME:
1401 /* assumes msg->sol points to the first char */
1402 if (likely(HTTP_IS_TOKEN(*ptr)))
1403 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1404
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1405 if (likely(*ptr == ':')) {
1406 msg->col = ptr - buf->data;
1407 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
1408 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1409
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1410 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1411
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1412 http_msg_hdr_l1_sp:
1413 case HTTP_MSG_HDR_L1_SP:
1414 /* assumes msg->sol points to the first char and msg->col to the colon */
1415 if (likely(HTTP_IS_SPHT(*ptr)))
1416 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]1417
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1418 /* header value can be basically anything except CR/LF */
1419 msg->sov = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1420
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1421 if (likely(!HTTP_IS_CRLF(*ptr))) {
1422 goto http_msg_hdr_val;
1423 }
1424
1425 if (likely(*ptr == '\r'))
1426 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1427 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1428
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1429 http_msg_hdr_l1_lf:
1430 case HTTP_MSG_HDR_L1_LF:
1431 EXPECT_LF_HERE(ptr, http_msg_invalid);
1432 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]1433
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1434 http_msg_hdr_l1_lws:
1435 case HTTP_MSG_HDR_L1_LWS:
1436 if (likely(HTTP_IS_SPHT(*ptr))) {
1437 /* replace HT,CR,LF with spaces */
1438 for (; buf->data+msg->sov < ptr; msg->sov++)
1439 buf->data[msg->sov] = ' ';
1440 goto http_msg_hdr_l1_sp;
1441 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1442 /* we had a header consisting only in spaces ! */
1443 msg->eol = buf->data + msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1444 goto http_msg_complete_header;
1445
1446 http_msg_hdr_val:
1447 case HTTP_MSG_HDR_VAL:
1448 /* assumes msg->sol points to the first char, msg->col to the
1449 * colon, and msg->sov points to the first character of the
1450 * value.
1451 */
1452 if (likely(!HTTP_IS_CRLF(*ptr)))
1453 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1454
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1455 msg->eol = ptr;
1456 /* Note: we could also copy eol into ->eoh so that we have the
1457 * real header end in case it ends with lots of LWS, but is this
1458 * really needed ?
1459 */
1460 if (likely(*ptr == '\r'))
1461 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1462 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1463
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1464 http_msg_hdr_l2_lf:
1465 case HTTP_MSG_HDR_L2_LF:
1466 EXPECT_LF_HERE(ptr, http_msg_invalid);
1467 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]1468
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1469 http_msg_hdr_l2_lws:
1470 case HTTP_MSG_HDR_L2_LWS:
1471 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1472 /* LWS: replace HT,CR,LF with spaces */
1473 for (; msg->eol < ptr; msg->eol++)
1474 *msg->eol = ' ';
1475 goto http_msg_hdr_val;
1476 }
1477 http_msg_complete_header:
1478 /*
1479 * It was a new header, so the last one is finished.
1480 * Assumes msg->sol points to the first char, msg->col to the
1481 * colon, msg->sov points to the first character of the value
1482 * and msg->eol to the first CR or LF so we know how the line
1483 * ends. We insert last header into the index.
1484 */
1485 /*
1486 fprintf(stderr,"registering %-2d bytes : ", msg->eol - msg->sol);
1487 write(2, msg->sol, msg->eol-msg->sol);
1488 fprintf(stderr,"\n");
1489 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1490
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1491 if (unlikely(hdr_idx_add(msg->eol - msg->sol, *msg->eol == '\r',
1492 idx, idx->tail) < 0))
1493 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1494
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1495 msg->sol = ptr;
1496 if (likely(!HTTP_IS_CRLF(*ptr))) {
1497 goto http_msg_hdr_name;
1498 }
1499
1500 if (likely(*ptr == '\r'))
1501 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1502 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1503
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1504 http_msg_last_lf:
1505 case HTTP_MSG_LAST_LF:
1506 /* Assumes msg->sol points to the first of either CR or LF */
1507 EXPECT_LF_HERE(ptr, http_msg_invalid);
1508 ptr++;
1509 buf->lr = ptr;
1510 msg->eoh = msg->sol - buf->data;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1511 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1512 return;
1513#ifdef DEBUG_FULL
1514 default:
1515 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1516 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1517#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1518 }
1519 http_msg_ood:
1520 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1521 msg->msg_state = state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1522 buf->lr = ptr;
1523 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1524
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1525 http_msg_invalid:
1526 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1527 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1528 return;
1529}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1530
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1531/*
1532 * manages the client FSM and its socket. BTW, it also tries to handle the
1533 * cookie. It returns 1 if a state has changed (and a resync may be needed),
1534 * 0 else.
1535 */
1536int process_cli(struct session *t)
1537{
1538 int s = t->srv_state;
1539 int c = t->cli_state;
1540 struct buffer *req = t->req;
1541 struct buffer *rep = t->rep;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1542
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1543 DPRINTF(stderr,"process_cli: c=%s s=%s set(r,w)=%d,%d exp(r,w)=%d.%d,%d.%d\n",
1544 cli_stnames[c], srv_stnames[s],
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1545 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]1546 req->rex.tv_sec, req->rex.tv_usec,
1547 rep->wex.tv_sec, rep->wex.tv_usec);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1548
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1549 if (c == CL_STHEADERS) {
1550 /*
1551 * Now parse the partial (or complete) lines.
1552 * We will check the request syntax, and also join multi-line
1553 * headers. An index of all the lines will be elaborated while
1554 * parsing.
1555 *
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1556 * For the parsing, we use a 28 states FSM.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1557 *
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1558 * Here is the information we currently have :
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1559 * req->data + req->som = beginning of request
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1560 * req->data + req->eoh = end of processed headers / start of current one
1561 * req->data + req->eol = end of current header or line (LF or CRLF)
1562 * req->lr = first non-visited byte
1563 * req->r = end of data
1564 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1565
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1566 int cur_idx;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1567 struct http_txn *txn = &t->txn;
1568 struct http_msg *msg = &txn->req;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1569 struct proxy *cur_proxy;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1570
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1571 if (likely(req->lr < req->r))
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1572 http_msg_analyzer(req, msg, &txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1573
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1574 /* 1: we might have to print this header in debug mode */
1575 if (unlikely((global.mode & MODE_DEBUG) &&
1576 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1577 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1578 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1579
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1580 sol = req->data + msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1581 eol = sol + msg->sl.rq.l;
1582 debug_hdr("clireq", t, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1583
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1584 sol += hdr_idx_first_pos(&txn->hdr_idx);
1585 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1586
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1587 while (cur_idx) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1588 eol = sol + txn->hdr_idx.v[cur_idx].len;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1589 debug_hdr("clihdr", t, sol, eol);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1590 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
1591 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1592 }
1593 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1594
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1595
1596 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1597 * Now we quickly check if we have found a full valid request.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1598 * If not so, we check the FD and buffer states before leaving.
1599 * A full request is indicated by the fact that we have seen
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1600 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
1601 * requests are checked first.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1602 *
1603 */
1604
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1605 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1606 /*
1607 * First, let's catch bad requests.
1608 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1609 if (unlikely(msg->msg_state == HTTP_MSG_ERROR))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1610 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1611
1612 /* 1: Since we are in header mode, if there's no space
1613 * left for headers, we won't be able to free more
1614 * later, so the session will never terminate. We
1615 * must terminate it now.
1616 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1617 if (unlikely(req->l >= req->rlim - req->data)) {
1618 /* FIXME: check if URI is set and return Status
1619 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1620 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1621 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1622 }
1623
1624 /* 2: have we encountered a read error or a close ? */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1625 else if (unlikely(req->flags & (BF_READ_ERROR | BF_READ_NULL))) {
1626 /* read error, or last read : give up. */
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]1627 buffer_shutr(req);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1628 fd_delete(t->cli_fd);
1629 t->cli_state = CL_STCLOSE;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]1630 t->fe->failed_req++;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1631 if (!(t->flags & SN_ERR_MASK))
1632 t->flags |= SN_ERR_CLICL;
1633 if (!(t->flags & SN_FINST_MASK))
1634 t->flags |= SN_FINST_R;
1635 return 1;
1636 }
1637
1638 /* 3: has the read timeout expired ? */
Willy Tarreau036fae02008-01-06 13:24:40 +0100[diff] [blame]1639 else if (unlikely(tv_isle(&req->rex, &now) ||
1640 tv_isle(&txn->exp, &now))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1641 /* read timeout : give up with an error message. */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1642 txn->status = 408;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1643 client_retnclose(t, error_message(t, HTTP_ERR_408));
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]1644 t->fe->failed_req++;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1645 if (!(t->flags & SN_ERR_MASK))
1646 t->flags |= SN_ERR_CLITO;
1647 if (!(t->flags & SN_FINST_MASK))
1648 t->flags |= SN_FINST_R;
1649 return 1;
1650 }
1651
1652 /* 4: do we need to re-enable the read socket ? */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]1653 else if (unlikely(EV_FD_COND_S(t->cli_fd, DIR_RD))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1654 /* fd in DIR_RD was disabled, perhaps because of a previous buffer
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1655 * full. We cannot loop here since stream_sock_read will disable it only if
1656 * req->l == rlim-data
1657 */
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]1658 if (!tv_add_ifset(&req->rex, &now, &t->fe->timeout.client))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1659 tv_eternity(&req->rex);
1660 }
1661 return t->cli_state != CL_STHEADERS;
1662 }
1663
1664
1665 /****************************************************************
1666 * More interesting part now : we know that we have a complete *
1667 * request which at least looks like HTTP. We have an indicator *
1668 * of each header's length, so we can parse them quickly. *
1669 ****************************************************************/
1670
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1671 /* ensure we keep this pointer to the beginning of the message */
1672 msg->sol = req->data + msg->som;
1673
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1674 /*
1675 * 1: identify the method
1676 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1677 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1678
1679 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1680 * 2: check if the URI matches the monitor_uri.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1681 * We have to do this for every request which gets in, because
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1682 * the monitor-uri is defined by the frontend.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1683 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1684 if (unlikely((t->fe->monitor_uri_len != 0) &&
1685 (t->fe->monitor_uri_len == msg->sl.rq.u_l) &&
1686 !memcmp(&req->data[msg->sl.rq.u],
1687 t->fe->monitor_uri,
1688 t->fe->monitor_uri_len))) {
1689 /*
1690 * We have found the monitor URI
1691 */
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1692 struct acl_cond *cond;
1693 cur_proxy = t->fe;
1694
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1695 t->flags |= SN_MONITOR;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1696
1697 /* Check if we want to fail this monitor request or not */
1698 list_for_each_entry(cond, &cur_proxy->mon_fail_cond, list) {
1699 int ret = acl_exec_cond(cond, cur_proxy, t, txn, ACL_DIR_REQ);
1700 if (cond->pol == ACL_COND_UNLESS)
1701 ret = !ret;
1702
1703 if (ret) {
1704 /* we fail this request, let's return 503 service unavail */
1705 txn->status = 503;
1706 client_retnclose(t, error_message(t, HTTP_ERR_503));
1707 goto return_prx_cond;
1708 }
1709 }
1710
1711 /* nothing to fail, let's reply normaly */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1712 txn->status = 200;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1713 client_retnclose(t, &http_200_chunk);
1714 goto return_prx_cond;
1715 }
1716
1717 /*
1718 * 3: Maybe we have to copy the original REQURI for the logs ?
1719 * Note: we cannot log anymore if the request has been
1720 * classified as invalid.
1721 */
1722 if (unlikely(t->logs.logwait & LW_REQ)) {
1723 /* we have a complete HTTP request that we must log */
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]1724 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1725 int urilen = msg->sl.rq.l;
1726
1727 if (urilen >= REQURI_LEN)
1728 urilen = REQURI_LEN - 1;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1729 memcpy(txn->uri, &req->data[msg->som], urilen);
1730 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1731
1732 if (!(t->logs.logwait &= ~LW_REQ))
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1733 http_sess_log(t);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1734 } else {
1735 Alert("HTTP logging : out of memory.\n");
1736 }
1737 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1738
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1739
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1740 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
1741 if (unlikely(msg->sl.rq.v_l == 0)) {
1742 int delta;
1743 char *cur_end;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1744 msg->sol = req->data + msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1745 cur_end = msg->sol + msg->sl.rq.l;
1746 delta = 0;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1747
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1748 if (msg->sl.rq.u_l == 0) {
1749 /* if no URI was set, add "/" */
1750 delta = buffer_replace2(req, cur_end, cur_end, " /", 2);
1751 cur_end += delta;
1752 msg->eoh += delta;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1753 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1754 /* add HTTP version */
1755 delta = buffer_replace2(req, cur_end, cur_end, " HTTP/1.0\r\n", 11);
1756 msg->eoh += delta;
1757 cur_end += delta;
1758 cur_end = (char *)http_parse_reqline(msg, req->data,
1759 HTTP_MSG_RQMETH,
1760 msg->sol, cur_end + 1,
1761 NULL, NULL);
1762 if (unlikely(!cur_end))
1763 goto return_bad_req;
1764
1765 /* we have a full HTTP/1.0 request now and we know that
1766 * we have either a CR or an LF at <ptr>.
1767 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1768 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1769 }
1770
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1771
1772 /* 5: we may need to capture headers */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1773 if (unlikely((t->logs.logwait & LW_REQHDR) && t->fe->req_cap))
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1774 capture_headers(req->data + msg->som, &txn->hdr_idx,
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1775 txn->req.cap, t->fe->req_cap);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1776
1777 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1778 * 6: we will have to evaluate the filters.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1779 * As opposed to version 1.2, now they will be evaluated in the
1780 * filters order and not in the header order. This means that
1781 * each filter has to be validated among all headers.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1782 *
1783 * We can now check whether we want to switch to another
1784 * backend, in which case we will re-check the backend's
1785 * filters and various options. In order to support 3-level
1786 * switching, here's how we should proceed :
1787 *
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1788 * a) run be.
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1789 * if (switch) then switch ->be to the new backend.
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1790 * b) run be if (be != fe).
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1791 * There cannot be any switch from there, so ->be cannot be
1792 * changed anymore.
1793 *
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1794 * => filters always apply to ->be, then ->be may change.
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1795 *
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1796 * The response path will be able to apply either ->be, or
1797 * ->be then ->fe filters in order to match the reverse of
1798 * the forward sequence.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1799 */
1800
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1801 do {
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1802 struct acl_cond *cond;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1803 struct proxy *rule_set = t->be;
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1804 cur_proxy = t->be;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1805
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1806 /* first check whether we have some ACLs set to block this request */
1807 list_for_each_entry(cond, &cur_proxy->block_cond, list) {
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]1808 int ret = acl_exec_cond(cond, cur_proxy, t, txn, ACL_DIR_REQ);
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1809 if (cond->pol == ACL_COND_UNLESS)
1810 ret = !ret;
1811
1812 if (ret) {
1813 txn->status = 403;
1814 /* let's log the request time */
1815 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
1816 client_retnclose(t, error_message(t, HTTP_ERR_403));
1817 goto return_prx_cond;
1818 }
1819 }
1820
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1821 /* try headers filters */
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1822 if (rule_set->req_exp != NULL) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1823 if (apply_filters_to_request(t, req, rule_set->req_exp) < 0)
1824 goto return_bad_req;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1825 }
1826
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1827 if (!(t->flags & SN_BE_ASSIGNED) && (t->be != cur_proxy)) {
1828 /* to ensure correct connection accounting on
1829 * the backend, we count the connection for the
1830 * one managing the queue.
1831 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1832 t->be->beconn++;
1833 if (t->be->beconn > t->be->beconn_max)
1834 t->be->beconn_max = t->be->beconn;
1835 t->be->cum_beconn++;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1836 t->flags |= SN_BE_ASSIGNED;
1837 }
1838
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1839 /* has the request been denied ? */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]1840 if (txn->flags & TX_CLDENY) {
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1841 /* no need to go further */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1842 txn->status = 403;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1843 /* let's log the request time */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]1844 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1845 client_retnclose(t, error_message(t, HTTP_ERR_403));
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1846 goto return_prx_cond;
1847 }
1848
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1849 /* We might have to check for "Connection:" */
Krzysztof Oledzki336d4752007-12-25 02:40:22 +0100[diff] [blame]1850 if (((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1851 !(t->flags & SN_CONN_CLOSED)) {
1852 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1853 int cur_idx, old_idx, delta, val;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1854 struct hdr_idx_elem *cur_hdr;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1855
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1856 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1857 old_idx = 0;
1858
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1859 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
1860 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1861 cur_ptr = cur_next;
1862 cur_end = cur_ptr + cur_hdr->len;
1863 cur_next = cur_end + cur_hdr->cr + 1;
1864
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1865 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
1866 if (val) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1867 /* 3 possibilities :
1868 * - we have already set Connection: close,
1869 * so we remove this line.
1870 * - we have not yet set Connection: close,
1871 * but this line indicates close. We leave
1872 * it untouched and set the flag.
1873 * - we have not yet set Connection: close,
1874 * and this line indicates non-close. We
1875 * replace it.
1876 */
1877 if (t->flags & SN_CONN_CLOSED) {
1878 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1879 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1880 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1881 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
1882 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1883 cur_hdr->len = 0;
1884 } else {
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1885 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
1886 delta = buffer_replace2(req, cur_ptr + val, cur_end,
1887 "close", 5);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1888 cur_next += delta;
1889 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1890 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1891 }
1892 t->flags |= SN_CONN_CLOSED;
1893 }
1894 }
1895 old_idx = cur_idx;
1896 }
Willy Tarreauf2f0ee82007-03-30 12:02:43 +0200[diff] [blame]1897 }
1898 /* add request headers from the rule sets in the same order */
1899 for (cur_idx = 0; cur_idx < rule_set->nb_reqadd; cur_idx++) {
1900 if (unlikely(http_header_add_tail(req,
1901 &txn->req,
1902 &txn->hdr_idx,
1903 rule_set->req_add[cur_idx])) < 0)
1904 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1905 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]1906
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1907 /* check if stats URI was requested, and if an auth is needed */
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]1908 if (rule_set->uri_auth != NULL &&
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1909 (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)) {
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]1910 /* we have to check the URI and auth for this request */
1911 if (stats_check_uri_auth(t, rule_set))
1912 return 1;
1913 }
1914
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]1915 /* now check whether we have some switching rules for this request */
1916 if (!(t->flags & SN_BE_ASSIGNED)) {
1917 struct switching_rule *rule;
1918
1919 list_for_each_entry(rule, &cur_proxy->switching_rules, list) {
1920 int ret;
1921
1922 ret = acl_exec_cond(rule->cond, cur_proxy, t, txn, ACL_DIR_REQ);
1923 if (cond->pol == ACL_COND_UNLESS)
1924 ret = !ret;
1925
1926 if (ret) {
1927 t->be = rule->be.backend;
1928 t->be->beconn++;
1929 if (t->be->beconn > t->be->beconn_max)
1930 t->be->beconn_max = t->be->beconn;
1931 t->be->cum_beconn++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]1932
1933 /* assign new parameters to the session from the new backend */
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]1934 t->rep->rto = t->req->wto = t->be->timeout.server;
1935 t->req->cto = t->be->timeout.connect;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]1936 t->conn_retries = t->be->conn_retries;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]1937 t->flags |= SN_BE_ASSIGNED;
1938 break;
1939 }
1940 }
1941 }
1942
Willy Tarreau5fdfb912007-01-01 23:11:07 +0100[diff] [blame]1943 if (!(t->flags & SN_BE_ASSIGNED) && cur_proxy->defbe.be) {
1944 /* No backend was set, but there was a default
1945 * backend set in the frontend, so we use it and
1946 * loop again.
1947 */
1948 t->be = cur_proxy->defbe.be;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1949 t->be->beconn++;
1950 if (t->be->beconn > t->be->beconn_max)
1951 t->be->beconn_max = t->be->beconn;
1952 t->be->cum_beconn++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]1953
1954 /* assign new parameters to the session from the new backend */
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]1955 t->rep->rto = t->req->wto = t->be->timeout.server;
1956 t->req->cto = t->be->timeout.connect;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]1957 t->conn_retries = t->be->conn_retries;
Willy Tarreau5fdfb912007-01-01 23:11:07 +0100[diff] [blame]1958 t->flags |= SN_BE_ASSIGNED;
1959 }
1960 } while (t->be != cur_proxy); /* we loop only if t->be has changed */
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1961
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1962
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1963 if (!(t->flags & SN_BE_ASSIGNED)) {
1964 /* To ensure correct connection accounting on
1965 * the backend, we count the connection for the
1966 * one managing the queue.
1967 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1968 t->be->beconn++;
1969 if (t->be->beconn > t->be->beconn_max)
1970 t->be->beconn_max = t->be->beconn;
1971 t->be->cum_beconn++;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1972 t->flags |= SN_BE_ASSIGNED;
1973 }
1974
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1975 /*
1976 * Right now, we know that we have processed the entire headers
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1977 * and that unwanted requests have been filtered out. We can do
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1978 * whatever we want with the remaining request. Also, now we
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1979 * may have separate values for ->fe, ->be.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1980 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1981
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1982 /*
1983 * If HTTP PROXY is set we simply get remote server address
1984 * parsing incoming request.
1985 */
1986 if ((t->be->options & PR_O_HTTP_PROXY) && !(t->flags & SN_ADDR_SET)) {
1987 url2sa(req->data + msg->sl.rq.u, msg->sl.rq.u_l, &t->srv_addr);
1988 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1989
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1990 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1991 * 7: the appsession cookie was looked up very early in 1.2,
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1992 * so let's do the same now.
1993 */
1994
1995 /* It needs to look into the URI */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1996 if (t->be->appsession_name) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1997 get_srv_from_appsession(t, &req->data[msg->som], msg->sl.rq.l);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1998 }
1999
2000
2001 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2002 * 8: Now we can work with the cookies.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2003 * Note that doing so might move headers in the request, but
2004 * the fields will stay coherent and the URI will not move.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2005 * This should only be performed in the backend.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2006 */
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]2007 if ((t->be->cookie_name || t->be->appsession_name || t->be->capture_name)
2008 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2009 manage_client_side_cookies(t, req);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2010
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2011
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2012 /*
Willy Tarreaubb046ac2007-03-03 19:17:03 +0100[diff] [blame]2013 * 9: add X-Forwarded-For if either the frontend or the backend
2014 * asks for it.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2015 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2016 if ((t->fe->options | t->be->options) & PR_O_FWDFOR) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2017 if (t->cli_addr.ss_family == AF_INET) {
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2018 /* Add an X-Forwarded-For header unless the source IP is
2019 * in the 'except' network range.
2020 */
2021 if ((!t->fe->except_mask.s_addr ||
2022 (((struct sockaddr_in *)&t->cli_addr)->sin_addr.s_addr & t->fe->except_mask.s_addr)
2023 != t->fe->except_net.s_addr) &&
2024 (!t->be->except_mask.s_addr ||
2025 (((struct sockaddr_in *)&t->cli_addr)->sin_addr.s_addr & t->be->except_mask.s_addr)
2026 != t->be->except_net.s_addr)) {
2027 int len;
2028 unsigned char *pn;
2029 pn = (unsigned char *)&((struct sockaddr_in *)&t->cli_addr)->sin_addr;
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2030
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2031 len = sprintf(trash, "X-Forwarded-For: %d.%d.%d.%d",
2032 pn[0], pn[1], pn[2], pn[3]);
2033
2034 if (unlikely(http_header_add_tail2(req, &txn->req,
2035 &txn->hdr_idx, trash, len)) < 0)
2036 goto return_bad_req;
2037 }
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2038 }
2039 else if (t->cli_addr.ss_family == AF_INET6) {
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2040 /* FIXME: for the sake of completeness, we should also support
2041 * 'except' here, although it is mostly useless in this case.
2042 */
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2043 int len;
2044 char pn[INET6_ADDRSTRLEN];
2045 inet_ntop(AF_INET6,
2046 (const void *)&((struct sockaddr_in6 *)(&t->cli_addr))->sin6_addr,
2047 pn, sizeof(pn));
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2048 len = sprintf(trash, "X-Forwarded-For: %s", pn);
2049 if (unlikely(http_header_add_tail2(req, &txn->req,
2050 &txn->hdr_idx, trash, len)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2051 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2052 }
2053 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2054
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2055 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2056 * 10: add "Connection: close" if needed and not yet set.
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2057 * 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]2058 */
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2059 if (!(t->flags & SN_CONN_CLOSED) &&
Krzysztof Oledzki336d4752007-12-25 02:40:22 +0100[diff] [blame]2060 ((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) {
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2061 if ((unlikely(msg->sl.rq.v_l != 8) ||
2062 unlikely(req->data[msg->som + msg->sl.rq.v + 7] != '0')) &&
2063 unlikely(http_header_add_tail2(req, &txn->req, &txn->hdr_idx,
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2064 "Connection: close", 17)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2065 goto return_bad_req;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2066 t->flags |= SN_CONN_CLOSED;
Willy Tarreaue15d9132006-12-14 22:26:42 +0100[diff] [blame]2067 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2068
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2069 /*************************************************************
2070 * OK, that's finished for the headers. We have done what we *
2071 * could. Let's switch to the DATA state. *
2072 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2073
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2074 t->cli_state = CL_STDATA;
2075 req->rlim = req->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2076
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2077 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2078
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2079 if (!tv_isset(&t->fe->timeout.client) ||
2080 (t->srv_state < SV_STDATA && tv_isset(&t->be->timeout.server))) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2081 /* If the client has no timeout, or if the server is not ready yet,
2082 * and we know for sure that it can expire, then it's cleaner to
2083 * disable the timeout on the client side so that too low values
2084 * cannot make the sessions abort too early.
2085 *
2086 * FIXME-20050705: the server needs a way to re-enable this time-out
2087 * when it switches its state, otherwise a client can stay connected
2088 * indefinitely. This now seems to be OK.
2089 */
2090 tv_eternity(&req->rex);
2091 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2092
Willy Tarreau1fa31262007-12-03 00:36:16 +0100[diff] [blame]2093 /* When a connection is tarpitted, we use the tarpit timeout,
2094 * which may be the same as the connect timeout if unspecified.
2095 * If unset, then set it to zero because we really want it to
2096 * eventually expire.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2097 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2098 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2099 t->req->l = 0;
2100 /* flush the request so that we can drop the connection early
2101 * if the client closes first.
2102 */
Willy Tarreau1fa31262007-12-03 00:36:16 +0100[diff] [blame]2103 if (!tv_add_ifset(&req->cex, &now, &t->be->timeout.tarpit))
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]2104 req->cex = now;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2105 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2106
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2107 /* OK let's go on with the BODY now */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2108 goto process_data;
2109
2110 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]2111 txn->req.msg_state = HTTP_MSG_ERROR;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2112 txn->status = 400;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2113 client_retnclose(t, error_message(t, HTTP_ERR_400));
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]2114 t->fe->failed_req++;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2115 return_prx_cond:
2116 if (!(t->flags & SN_ERR_MASK))
2117 t->flags |= SN_ERR_PRXCOND;
2118 if (!(t->flags & SN_FINST_MASK))
2119 t->flags |= SN_FINST_R;
2120 return 1;
2121
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2122 }
2123 else if (c == CL_STDATA) {
2124 process_data:
2125 /* FIXME: this error handling is partly buggy because we always report
2126 * a 'DATA' phase while we don't know if the server was in IDLE, CONN
2127 * or HEADER phase. BTW, it's not logical to expire the client while
2128 * we're waiting for the server to connect.
2129 */
2130 /* read or write error */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2131 if (rep->flags & BF_WRITE_ERROR || req->flags & BF_READ_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2132 buffer_shutr(req);
2133 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2134 fd_delete(t->cli_fd);
2135 t->cli_state = CL_STCLOSE;
2136 if (!(t->flags & SN_ERR_MASK))
2137 t->flags |= SN_ERR_CLICL;
2138 if (!(t->flags & SN_FINST_MASK)) {
2139 if (t->pend_pos)
2140 t->flags |= SN_FINST_Q;
2141 else if (s == SV_STCONN)
2142 t->flags |= SN_FINST_C;
2143 else
2144 t->flags |= SN_FINST_D;
2145 }
2146 return 1;
2147 }
2148 /* last read, or end of server write */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2149 else if (req->flags & BF_READ_NULL || s == SV_STSHUTW || s == SV_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2150 EV_FD_CLR(t->cli_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2151 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2152 t->cli_state = CL_STSHUTR;
2153 return 1;
2154 }
2155 /* last server read and buffer empty */
2156 else if ((s == SV_STSHUTR || s == SV_STCLOSE) && (rep->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2157 EV_FD_CLR(t->cli_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2158 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2159 shutdown(t->cli_fd, SHUT_WR);
2160 /* We must ensure that the read part is still alive when switching
2161 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2162 EV_FD_SET(t->cli_fd, DIR_RD);
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2163 tv_add_ifset(&req->rex, &now, &t->fe->timeout.client);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2164 t->cli_state = CL_STSHUTW;
2165 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2166 return 1;
2167 }
2168 /* read timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2169 else if (tv_isle(&req->rex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2170 EV_FD_CLR(t->cli_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2171 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2172 t->cli_state = CL_STSHUTR;
2173 if (!(t->flags & SN_ERR_MASK))
2174 t->flags |= SN_ERR_CLITO;
2175 if (!(t->flags & SN_FINST_MASK)) {
2176 if (t->pend_pos)
2177 t->flags |= SN_FINST_Q;
2178 else if (s == SV_STCONN)
2179 t->flags |= SN_FINST_C;
2180 else
2181 t->flags |= SN_FINST_D;
2182 }
2183 return 1;
2184 }
2185 /* write timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2186 else if (tv_isle(&rep->wex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2187 EV_FD_CLR(t->cli_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2188 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2189 shutdown(t->cli_fd, SHUT_WR);
2190 /* We must ensure that the read part is still alive when switching
2191 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2192 EV_FD_SET(t->cli_fd, DIR_RD);
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2193 tv_add_ifset(&req->rex, &now, &t->fe->timeout.client);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2194
2195 t->cli_state = CL_STSHUTW;
2196 if (!(t->flags & SN_ERR_MASK))
2197 t->flags |= SN_ERR_CLITO;
2198 if (!(t->flags & SN_FINST_MASK)) {
2199 if (t->pend_pos)
2200 t->flags |= SN_FINST_Q;
2201 else if (s == SV_STCONN)
2202 t->flags |= SN_FINST_C;
2203 else
2204 t->flags |= SN_FINST_D;
2205 }
2206 return 1;
2207 }
2208
2209 if (req->l >= req->rlim - req->data) {
2210 /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2211 if (EV_FD_COND_C(t->cli_fd, DIR_RD)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2212 /* stop reading until we get some space */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2213 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2214 }
2215 } else {
2216 /* there's still some space in the buffer */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2217 if (EV_FD_COND_S(t->cli_fd, DIR_RD)) {
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2218 if (!tv_isset(&t->fe->timeout.client) ||
2219 (t->srv_state < SV_STDATA && tv_isset(&t->be->timeout.server)))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2220 /* If the client has no timeout, or if the server not ready yet, and we
2221 * know for sure that it can expire, then it's cleaner to disable the
2222 * timeout on the client side so that too low values cannot make the
2223 * sessions abort too early.
2224 */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2225 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2226 else
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2227 tv_add(&req->rex, &now, &t->fe->timeout.client);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2228 }
2229 }
2230
2231 if ((rep->l == 0) ||
2232 ((s < SV_STDATA) /* FIXME: this may be optimized && (rep->w == rep->h)*/)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2233 if (EV_FD_COND_C(t->cli_fd, DIR_WR)) {
2234 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2235 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2236 }
2237 } else {
2238 /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2239 if (EV_FD_COND_S(t->cli_fd, DIR_WR)) {
2240 /* restart writing */
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2241 if (tv_add_ifset(&rep->wex, &now, &t->fe->timeout.client)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2242 /* FIXME: to prevent the client from expiring read timeouts during writes,
2243 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2244 req->rex = rep->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2245 }
2246 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2247 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2248 }
2249 }
2250 return 0; /* other cases change nothing */
2251 }
2252 else if (c == CL_STSHUTR) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2253 if (rep->flags & BF_WRITE_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2254 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2255 fd_delete(t->cli_fd);
2256 t->cli_state = CL_STCLOSE;
2257 if (!(t->flags & SN_ERR_MASK))
2258 t->flags |= SN_ERR_CLICL;
2259 if (!(t->flags & SN_FINST_MASK)) {
2260 if (t->pend_pos)
2261 t->flags |= SN_FINST_Q;
2262 else if (s == SV_STCONN)
2263 t->flags |= SN_FINST_C;
2264 else
2265 t->flags |= SN_FINST_D;
2266 }
2267 return 1;
2268 }
2269 else if ((s == SV_STSHUTR || s == SV_STCLOSE) && (rep->l == 0)
2270 && !(t->flags & SN_SELF_GEN)) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2271 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2272 fd_delete(t->cli_fd);
2273 t->cli_state = CL_STCLOSE;
2274 return 1;
2275 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2276 else if (tv_isle(&rep->wex, &now)) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2277 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2278 fd_delete(t->cli_fd);
2279 t->cli_state = CL_STCLOSE;
2280 if (!(t->flags & SN_ERR_MASK))
2281 t->flags |= SN_ERR_CLITO;
2282 if (!(t->flags & SN_FINST_MASK)) {
2283 if (t->pend_pos)
2284 t->flags |= SN_FINST_Q;
2285 else if (s == SV_STCONN)
2286 t->flags |= SN_FINST_C;
2287 else
2288 t->flags |= SN_FINST_D;
2289 }
2290 return 1;
2291 }
2292
2293 if (t->flags & SN_SELF_GEN) {
2294 produce_content(t);
2295 if (rep->l == 0) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2296 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2297 fd_delete(t->cli_fd);
2298 t->cli_state = CL_STCLOSE;
2299 return 1;
2300 }
2301 }
2302
2303 if ((rep->l == 0)
2304 || ((s == SV_STHEADERS) /* FIXME: this may be optimized && (rep->w == rep->h)*/)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2305 if (EV_FD_COND_C(t->cli_fd, DIR_WR)) {
2306 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2307 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2308 }
2309 } else {
2310 /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2311 if (EV_FD_COND_S(t->cli_fd, DIR_WR)) {
2312 /* restart writing */
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2313 if (!tv_add_ifset(&rep->wex, &now, &t->fe->timeout.client))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2314 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2315 }
2316 }
2317 return 0;
2318 }
2319 else if (c == CL_STSHUTW) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2320 if (req->flags & BF_READ_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2321 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2322 fd_delete(t->cli_fd);
2323 t->cli_state = CL_STCLOSE;
2324 if (!(t->flags & SN_ERR_MASK))
2325 t->flags |= SN_ERR_CLICL;
2326 if (!(t->flags & SN_FINST_MASK)) {
2327 if (t->pend_pos)
2328 t->flags |= SN_FINST_Q;
2329 else if (s == SV_STCONN)
2330 t->flags |= SN_FINST_C;
2331 else
2332 t->flags |= SN_FINST_D;
2333 }
2334 return 1;
2335 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2336 else if (req->flags & BF_READ_NULL || s == SV_STSHUTW || s == SV_STCLOSE) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2337 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2338 fd_delete(t->cli_fd);
2339 t->cli_state = CL_STCLOSE;
2340 return 1;
2341 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2342 else if (tv_isle(&req->rex, &now)) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2343 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2344 fd_delete(t->cli_fd);
2345 t->cli_state = CL_STCLOSE;
2346 if (!(t->flags & SN_ERR_MASK))
2347 t->flags |= SN_ERR_CLITO;
2348 if (!(t->flags & SN_FINST_MASK)) {
2349 if (t->pend_pos)
2350 t->flags |= SN_FINST_Q;
2351 else if (s == SV_STCONN)
2352 t->flags |= SN_FINST_C;
2353 else
2354 t->flags |= SN_FINST_D;
2355 }
2356 return 1;
2357 }
2358 else if (req->l >= req->rlim - req->data) {
2359 /* no room to read more data */
2360
2361 /* FIXME-20050705: is it possible for a client to maintain a session
2362 * after the timeout by sending more data after it receives a close ?
2363 */
2364
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2365 if (EV_FD_COND_C(t->cli_fd, DIR_RD)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2366 /* stop reading until we get some space */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2367 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2368 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2369 }
2370 } else {
2371 /* there's still some space in the buffer */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2372 if (EV_FD_COND_S(t->cli_fd, DIR_RD)) {
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2373 if (!tv_add_ifset(&req->rex, &now, &t->fe->timeout.client))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2374 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2375 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2376 }
2377 }
2378 return 0;
2379 }
2380 else { /* CL_STCLOSE: nothing to do */
2381 if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
2382 int len;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2383 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]2384 write(1, trash, len);
2385 }
2386 return 0;
2387 }
2388 return 0;
2389}
2390
2391
2392/*
2393 * manages the server FSM and its socket. It returns 1 if a state has changed
2394 * (and a resync may be needed), 0 else.
2395 */
2396int process_srv(struct session *t)
2397{
2398 int s = t->srv_state;
2399 int c = t->cli_state;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2400 struct http_txn *txn = &t->txn;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2401 struct buffer *req = t->req;
2402 struct buffer *rep = t->rep;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2403 int conn_err;
2404
2405#ifdef DEBUG_FULL
2406 fprintf(stderr,"process_srv: c=%s, s=%s\n", cli_stnames[c], srv_stnames[s]);
2407#endif
Willy Tarreauee991362007-05-14 14:37:50 +0200[diff] [blame]2408
2409#if 0
2410 fprintf(stderr,"%s:%d fe->clito=%d.%d, fe->conto=%d.%d, fe->srvto=%d.%d\n",
2411 __FUNCTION__, __LINE__,
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2412 t->fe->timeout.client.tv_sec, t->fe->timeout.client.tv_usec,
2413 t->fe->timeout.connect.tv_sec, t->fe->timeout.connect.tv_usec,
2414 t->fe->timeout.server.tv_sec, t->fe->timeout.server.tv_usec);
Willy Tarreauee991362007-05-14 14:37:50 +0200[diff] [blame]2415 fprintf(stderr,"%s:%d be->clito=%d.%d, be->conto=%d.%d, be->srvto=%d.%d\n",
2416 __FUNCTION__, __LINE__,
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2417 t->be->timeout.client.tv_sec, t->be->timeout.client.tv_usec,
2418 t->be->timeout.connect.tv_sec, t->be->timeout.connect.tv_usec,
2419 t->be->timeout.server.tv_sec, t->be->timeout.server.tv_usec);
Willy Tarreauee991362007-05-14 14:37:50 +0200[diff] [blame]2420
2421 fprintf(stderr,"%s:%d req->cto=%d.%d, req->rto=%d.%d, req->wto=%d.%d\n",
2422 __FUNCTION__, __LINE__,
2423 req->cto.tv_sec, req->cto.tv_usec,
2424 req->rto.tv_sec, req->rto.tv_usec,
2425 req->wto.tv_sec, req->wto.tv_usec);
2426
2427 fprintf(stderr,"%s:%d rep->cto=%d.%d, rep->rto=%d.%d, rep->wto=%d.%d\n",
2428 __FUNCTION__, __LINE__,
2429 rep->cto.tv_sec, rep->cto.tv_usec,
2430 rep->rto.tv_sec, rep->rto.tv_usec,
2431 rep->wto.tv_sec, rep->wto.tv_usec);
2432#endif
2433
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2434 //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]2435 //EV_FD_ISSET(t->cli_fd, DIR_RD), EV_FD_ISSET(t->cli_fd, DIR_WR),
2436 //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]2437 //);
2438 if (s == SV_STIDLE) {
2439 if (c == CL_STHEADERS)
2440 return 0; /* stay in idle, waiting for data to reach the client side */
2441 else if (c == CL_STCLOSE || c == CL_STSHUTW ||
2442 (c == CL_STSHUTR &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2443 (t->req->l == 0 || t->be->options & PR_O_ABRT_CLOSE))) { /* give up */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2444 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2445 if (t->pend_pos)
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2446 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2447 /* note that this must not return any error because it would be able to
2448 * overwrite the client_retnclose() output.
2449 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2450 if (txn->flags & TX_CLTARPIT)
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2451 srv_close_with_err(t, SN_ERR_CLICL, SN_FINST_T, 0, NULL);
Willy Tarreau08fa2e32006-09-03 10:47:37 +0200[diff] [blame]2452 else
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2453 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]2454
2455 return 1;
2456 }
2457 else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2458 if (txn->flags & TX_CLTARPIT) {
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2459 /* This connection is being tarpitted. The CLIENT side has
2460 * already set the connect expiration date to the right
2461 * timeout. We just have to check that it has not expired.
2462 */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2463 if (!tv_isle(&req->cex, &now))
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2464 return 0;
2465
2466 /* We will set the queue timer to the time spent, just for
2467 * logging purposes. We fake a 500 server error, so that the
2468 * attacker will not suspect his connection has been tarpitted.
2469 * It will not cause trouble to the logs because we can exclude
2470 * the tarpitted connections by filtering on the 'PT' status flags.
2471 */
2472 tv_eternity(&req->cex);
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2473 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2474 srv_close_with_err(t, SN_ERR_PRXCOND, SN_FINST_T,
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2475 500, error_message(t, HTTP_ERR_500));
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2476 return 1;
2477 }
2478
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2479 /* Right now, we will need to create a connection to the server.
2480 * We might already have tried, and got a connection pending, in
2481 * which case we will not do anything till it's pending. It's up
2482 * to any other session to release it and wake us up again.
2483 */
2484 if (t->pend_pos) {
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2485 if (!tv_isle(&req->cex, &now))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2486 return 0;
2487 else {
2488 /* we've been waiting too long here */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2489 tv_eternity(&req->cex);
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2490 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2491 srv_close_with_err(t, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2492 503, error_message(t, HTTP_ERR_503));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2493 if (t->srv)
2494 t->srv->failed_conns++;
Willy Tarreau50fd1e12007-12-10 15:25:35 +0100[diff] [blame^]2495 t->be->failed_conns++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2496 return 1;
2497 }
2498 }
2499
2500 do {
2501 /* first, get a connection */
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2502 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2503 t->flags |= SN_REDIRECTABLE;
2504
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2505 if (srv_redispatch_connect(t))
2506 return t->srv_state != SV_STIDLE;
2507
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]2508 if ((t->flags & SN_REDIRECTABLE) && t->srv && t->srv->rdr_len) {
2509 /* Server supporting redirection and it is possible.
2510 * Invalid requests are reported as such. It concerns all
2511 * the largest ones.
2512 */
2513 struct chunk rdr;
2514 char *path;
2515 int len;
2516
2517 /* 1: create the response header */
2518 rdr.len = strlen(HTTP_302);
2519 rdr.str = trash;
2520 memcpy(rdr.str, HTTP_302, rdr.len);
2521
2522 /* 2: add the server's prefix */
2523 if (rdr.len + t->srv->rdr_len > sizeof(trash))
2524 goto cancel_redir;
2525
2526 memcpy(rdr.str + rdr.len, t->srv->rdr_pfx, t->srv->rdr_len);
2527 rdr.len += t->srv->rdr_len;
2528
2529 /* 3: add the request URI */
2530 path = http_get_path(txn);
2531 if (!path)
2532 goto cancel_redir;
2533 len = txn->req.sl.rq.u_l + (txn->req.sol+txn->req.sl.rq.u) - path;
2534 if (rdr.len + len > sizeof(trash) - 4) /* 4 for CRLF-CRLF */
2535 goto cancel_redir;
2536
2537 memcpy(rdr.str + rdr.len, path, len);
2538 rdr.len += len;
2539 memcpy(rdr.str + rdr.len, "\r\n\r\n", 4);
2540 rdr.len += 4;
2541
2542 srv_close_with_err(t, SN_ERR_PRXCOND, SN_FINST_C, 302, &rdr);
2543 /* FIXME: we should increase a counter of redirects per server and per backend. */
2544 if (t->srv)
2545 t->srv->cum_sess++;
2546 return 1;
2547 cancel_redir:
2548 txn->status = 400;
2549 t->fe->failed_req++;
2550 srv_close_with_err(t, SN_ERR_PRXCOND, SN_FINST_C,
2551 400, error_message(t, HTTP_ERR_400));
2552 return 1;
2553 }
2554
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2555 /* try to (re-)connect to the server, and fail if we expire the
2556 * number of retries.
2557 */
2558 if (srv_retryable_connect(t)) {
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2559 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2560 return t->srv_state != SV_STIDLE;
2561 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2562 } while (1);
2563 }
2564 }
2565 else if (s == SV_STCONN) { /* connection in progress */
2566 if (c == CL_STCLOSE || c == CL_STSHUTW ||
2567 (c == CL_STSHUTR &&
Willy Tarreauc9b654b2007-05-08 14:46:53 +0200[diff] [blame]2568 ((t->req->l == 0 && !(req->flags & BF_WRITE_STATUS)) ||
2569 t->be->options & PR_O_ABRT_CLOSE))) { /* give up */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2570 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2571 fd_delete(t->srv_fd);
2572 if (t->srv)
2573 t->srv->cur_sess--;
2574
2575 /* note that this must not return any error because it would be able to
2576 * overwrite the client_retnclose() output.
2577 */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2578 srv_close_with_err(t, SN_ERR_CLICL, SN_FINST_C, 0, NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2579 return 1;
2580 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2581 if (!(req->flags & BF_WRITE_STATUS) && !tv_isle(&req->cex, &now)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2582 //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]2583 return 0; /* nothing changed */
2584 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2585 else if (!(req->flags & BF_WRITE_STATUS) || (req->flags & BF_WRITE_ERROR)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2586 /* timeout, asynchronous connect error or first write error */
2587 //fprintf(stderr,"2: c=%d, s=%d\n", c, s);
2588
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]2589 if (t->flags & SN_CONN_TAR) {
2590 /* We are doing a turn-around waiting for a new connection attempt. */
2591 if (!tv_isle(&req->cex, &now))
2592 return 0;
2593 t->flags &= ~SN_CONN_TAR;
2594 }
2595 else {
2596 fd_delete(t->srv_fd);
2597 if (t->srv)
2598 t->srv->cur_sess--;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2599
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]2600 if (!(req->flags & BF_WRITE_STATUS))
2601 conn_err = SN_ERR_SRVTO; // it was a connect timeout.
2602 else
2603 conn_err = SN_ERR_SRVCL; // it was an asynchronous connect error.
2604
2605 /* ensure that we have enough retries left */
2606 if (srv_count_retry_down(t, conn_err))
2607 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2608
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]2609 if (req->flags & BF_WRITE_ERROR) {
2610 /* we encountered an immediate connection error, and we
2611 * will have to retry connecting to the same server, most
2612 * likely leading to the same result. To avoid this, we
2613 * fake a connection timeout to retry after a turn-around
2614 * time of 1 second. We will wait in the previous if block.
2615 */
2616 t->flags |= SN_CONN_TAR;
2617 tv_ms_add(&req->cex, &now, 1000);
2618 return 0;
2619 }
2620 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2621
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2622 if (t->srv && t->conn_retries == 0 && t->be->options & PR_O_REDISP) {
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2623 /* We're on our last chance, and the REDISP option was specified.
2624 * We will ignore cookie and force to balance or use the dispatcher.
2625 */
2626 /* let's try to offer this slot to anybody */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2627 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2628 task_wakeup(t->srv->queue_mgt);
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2629
Krzysztof Piotr Oledzki25b501a2008-01-06 16:36:16 +0100[diff] [blame]2630 if (t->srv) {
Willy Tarreau98937b82007-12-10 15:05:42 +0100[diff] [blame]2631 t->srv->cum_sess++;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2632 t->srv->failed_conns++;
Krzysztof Piotr Oledzki25b501a2008-01-06 16:36:16 +0100[diff] [blame]2633 t->srv->redispatches++;
2634 }
Krzysztof Oledzki1cf36ba2007-10-18 19:12:30 +0200[diff] [blame]2635 t->be->redispatches++;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2636
2637 t->flags &= ~(SN_DIRECT | SN_ASSIGNED | SN_ADDR_SET);
Krzysztof Piotr Oledzki25b501a2008-01-06 16:36:16 +0100[diff] [blame]2638 t->flags |= SN_REDISP;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2639 t->srv = NULL; /* it's left to the dispatcher to choose a server */
Willy Tarreaua5e65752007-03-18 20:53:22 +0100[diff] [blame]2640 http_flush_cookie_flags(txn);
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2641
2642 /* first, get a connection */
2643 if (srv_redispatch_connect(t))
Willy Tarreau00559e72008-01-06 23:46:19 +0100[diff] [blame]2644 return t->srv_state != SV_STCONN;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2645 }
2646
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2647 do {
2648 /* Now we will try to either reconnect to the same server or
2649 * connect to another server. If the connection gets queued
2650 * because all servers are saturated, then we will go back to
2651 * the SV_STIDLE state.
2652 */
2653 if (srv_retryable_connect(t)) {
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2654 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2655 return t->srv_state != SV_STCONN;
2656 }
2657
2658 /* we need to redispatch the connection to another server */
2659 if (srv_redispatch_connect(t))
2660 return t->srv_state != SV_STCONN;
2661 } while (1);
2662 }
2663 else { /* no error or write 0 */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2664 t->logs.t_connect = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2665
2666 //fprintf(stderr,"3: c=%d, s=%d\n", c, s);
2667 if (req->l == 0) /* nothing to write */ {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2668 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2669 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2670 } else /* need the right to write */ {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2671 EV_FD_SET(t->srv_fd, DIR_WR);
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2672 if (tv_add_ifset(&req->wex, &now, &t->be->timeout.server)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2673 /* FIXME: to prevent the server from expiring read timeouts during writes,
2674 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2675 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2676 }
2677 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2678 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2679 }
2680
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2681 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]2682 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2683 if (!tv_add_ifset(&rep->rex, &now, &t->be->timeout.server))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2684 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2685
2686 t->srv_state = SV_STDATA;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2687 rep->rlim = rep->data + BUFSIZE; /* no rewrite needed */
2688
2689 /* if the user wants to log as soon as possible, without counting
2690 bytes from the server, then this is the right moment. */
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2691 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2692 t->logs.t_close = t->logs.t_connect; /* to get a valid end date */
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]2693 tcp_sess_log(t);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2694 }
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]2695#ifdef CONFIG_HAP_TCPSPLICE
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2696 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]2697 /* TCP splicing supported by both FE and BE */
2698 tcp_splice_splicefd(t->cli_fd, t->srv_fd, 0);
2699 }
2700#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2701 }
2702 else {
2703 t->srv_state = SV_STHEADERS;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2704 rep->rlim = rep->data + BUFSIZE - MAXREWRITE; /* rewrite needed */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2705 t->txn.rsp.msg_state = HTTP_MSG_RPBEFORE;
2706 /* reset hdr_idx which was already initialized by the request.
2707 * right now, the http parser does it.
2708 * hdr_idx_init(&t->txn.hdr_idx);
2709 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2710 }
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2711 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2712 return 1;
2713 }
2714 }
2715 else if (s == SV_STHEADERS) { /* receiving server headers */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2716 /*
2717 * Now parse the partial (or complete) lines.
2718 * We will check the response syntax, and also join multi-line
2719 * headers. An index of all the lines will be elaborated while
2720 * parsing.
2721 *
2722 * For the parsing, we use a 28 states FSM.
2723 *
2724 * Here is the information we currently have :
2725 * rep->data + req->som = beginning of response
2726 * rep->data + req->eoh = end of processed headers / start of current one
2727 * rep->data + req->eol = end of current header or line (LF or CRLF)
2728 * rep->lr = first non-visited byte
2729 * rep->r = end of data
2730 */
2731
2732 int cur_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2733 struct http_msg *msg = &txn->rsp;
2734 struct proxy *cur_proxy;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2735
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2736 if (likely(rep->lr < rep->r))
2737 http_msg_analyzer(rep, msg, &txn->hdr_idx);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2738
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2739 /* 1: we might have to print this header in debug mode */
2740 if (unlikely((global.mode & MODE_DEBUG) &&
2741 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
2742 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
2743 char *eol, *sol;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2744
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2745 sol = rep->data + msg->som;
2746 eol = sol + msg->sl.rq.l;
2747 debug_hdr("srvrep", t, sol, eol);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2748
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2749 sol += hdr_idx_first_pos(&txn->hdr_idx);
2750 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2751
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2752 while (cur_idx) {
2753 eol = sol + txn->hdr_idx.v[cur_idx].len;
2754 debug_hdr("srvhdr", t, sol, eol);
2755 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2756 cur_idx = txn->hdr_idx.v[cur_idx].next;
2757 }
2758 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2759
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2760
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2761 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]2762 /* fd in DIR_RD was disabled, perhaps because of a previous buffer
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2763 * full. We cannot loop here since stream_sock_read will disable it only if
2764 * rep->l == rlim-data
2765 */
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2766 if (!tv_add_ifset(&rep->rex, &now, &t->be->timeout.server))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2767 tv_eternity(&rep->rex);
2768 }
2769
2770
2771 /*
2772 * Now we quickly check if we have found a full valid response.
2773 * If not so, we check the FD and buffer states before leaving.
2774 * A full response is indicated by the fact that we have seen
2775 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
2776 * responses are checked first.
2777 *
2778 * Depending on whether the client is still there or not, we
2779 * may send an error response back or not. Note that normally
2780 * we should only check for HTTP status there, and check I/O
2781 * errors somewhere else.
2782 */
2783
2784 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
2785
2786 /* Invalid response, or read error or write error */
2787 if (unlikely((msg->msg_state == HTTP_MSG_ERROR) ||
2788 (req->flags & BF_WRITE_ERROR) ||
2789 (rep->flags & BF_READ_ERROR))) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2790 buffer_shutr(rep);
2791 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2792 fd_delete(t->srv_fd);
2793 if (t->srv) {
2794 t->srv->cur_sess--;
2795 t->srv->failed_resp++;
2796 }
2797 t->be->failed_resp++;
2798 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2799 txn->status = 502;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2800 client_return(t, error_message(t, HTTP_ERR_502));
2801 if (!(t->flags & SN_ERR_MASK))
2802 t->flags |= SN_ERR_SRVCL;
2803 if (!(t->flags & SN_FINST_MASK))
2804 t->flags |= SN_FINST_H;
2805 /* We used to have a free connection slot. Since we'll never use it,
2806 * we have to inform the server that it may be used by another session.
2807 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2808 if (t->srv && may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2809 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2810
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2811 return 1;
2812 }
2813
2814 /* end of client write or end of server read.
2815 * since we are in header mode, if there's no space left for headers, we
2816 * won't be able to free more later, so the session will never terminate.
2817 */
2818 else if (unlikely(rep->flags & BF_READ_NULL ||
2819 c == CL_STSHUTW || c == CL_STCLOSE ||
2820 rep->l >= rep->rlim - rep->data)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2821 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2822 buffer_shutr(rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2823 t->srv_state = SV_STSHUTR;
2824 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2825 return 1;
2826 }
2827
2828 /* read timeout : return a 504 to the client.
2829 */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2830 else if (unlikely(EV_FD_ISSET(t->srv_fd, DIR_RD) &&
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2831 tv_isle(&rep->rex, &now))) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2832 buffer_shutr(rep);
2833 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2834 fd_delete(t->srv_fd);
2835 if (t->srv) {
2836 t->srv->cur_sess--;
2837 t->srv->failed_resp++;
2838 }
2839 t->be->failed_resp++;
2840 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2841 txn->status = 504;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2842 client_return(t, error_message(t, HTTP_ERR_504));
2843 if (!(t->flags & SN_ERR_MASK))
2844 t->flags |= SN_ERR_SRVTO;
2845 if (!(t->flags & SN_FINST_MASK))
2846 t->flags |= SN_FINST_H;
2847 /* We used to have a free connection slot. Since we'll never use it,
2848 * we have to inform the server that it may be used by another session.
2849 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2850 if (t->srv && may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2851 task_wakeup(t->srv->queue_mgt);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2852 return 1;
2853 }
2854
2855 /* last client read and buffer empty */
2856 /* FIXME!!! here, we don't want to switch to SHUTW if the
2857 * client shuts read too early, because we may still have
2858 * some work to do on the headers.
2859 * The side-effect is that if the client completely closes its
2860 * connection during SV_STHEADER, the connection to the server
2861 * is kept until a response comes back or the timeout is reached.
2862 */
2863 else if (unlikely((/*c == CL_STSHUTR ||*/ c == CL_STCLOSE) &&
2864 (req->l == 0))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2865 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2866 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2867
2868 /* We must ensure that the read part is still
2869 * alive when switching to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2870 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2871 tv_add_ifset(&rep->rex, &now, &t->be->timeout.server);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2872
2873 shutdown(t->srv_fd, SHUT_WR);
2874 t->srv_state = SV_STSHUTW;
2875 return 1;
2876 }
2877
2878 /* write timeout */
2879 /* FIXME!!! here, we don't want to switch to SHUTW if the
2880 * client shuts read too early, because we may still have
2881 * some work to do on the headers.
2882 */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2883 else if (unlikely(EV_FD_ISSET(t->srv_fd, DIR_WR) &&
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2884 tv_isle(&req->wex, &now))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2885 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2886 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2887 shutdown(t->srv_fd, SHUT_WR);
2888 /* We must ensure that the read part is still alive
2889 * when switching to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2890 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2891 tv_add_ifset(&rep->rex, &now, &t->be->timeout.server);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2892
2893 t->srv_state = SV_STSHUTW;
2894 if (!(t->flags & SN_ERR_MASK))
2895 t->flags |= SN_ERR_SRVTO;
2896 if (!(t->flags & SN_FINST_MASK))
2897 t->flags |= SN_FINST_H;
2898 return 1;
2899 }
2900
2901 /*
2902 * And now the non-error cases.
2903 */
2904
2905 /* Data remaining in the request buffer.
2906 * This happens during the first pass here, and during
2907 * long posts.
2908 */
2909 else if (likely(req->l)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2910 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
2911 /* restart writing */
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2912 if (tv_add_ifset(&req->wex, &now, &t->be->timeout.server)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2913 /* FIXME: to prevent the server from expiring read timeouts during writes,
2914 * we refresh it. */
2915 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2916 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2917 else
2918 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2919 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2920 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2921
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2922 /* nothing left in the request buffer */
2923 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2924 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
2925 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2926 tv_eternity(&req->wex);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2927 }
2928 }
2929
2930 return t->srv_state != SV_STHEADERS;
2931 }
2932
2933
2934 /*****************************************************************
2935 * More interesting part now : we know that we have a complete *
2936 * response which at least looks like HTTP. We have an indicator *
2937 * of each header's length, so we can parse them quickly. *
2938 ****************************************************************/
2939
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2940 /* ensure we keep this pointer to the beginning of the message */
2941 msg->sol = rep->data + msg->som;
2942
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2943 /*
2944 * 1: get the status code and check for cacheability.
2945 */
2946
2947 t->logs.logwait &= ~LW_RESP;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2948 txn->status = strl2ui(rep->data + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2949
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2950 switch (txn->status) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2951 case 200:
2952 case 203:
2953 case 206:
2954 case 300:
2955 case 301:
2956 case 410:
2957 /* RFC2616 @13.4:
2958 * "A response received with a status code of
2959 * 200, 203, 206, 300, 301 or 410 MAY be stored
2960 * by a cache (...) unless a cache-control
2961 * directive prohibits caching."
2962 *
2963 * RFC2616 @9.5: POST method :
2964 * "Responses to this method are not cacheable,
2965 * unless the response includes appropriate
2966 * Cache-Control or Expires header fields."
2967 */
2968 if (likely(txn->meth != HTTP_METH_POST) &&
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]2969 (t->be->options & (PR_O_CHK_CACHE|PR_O_COOK_NOC)))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2970 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2971 break;
2972 default:
2973 break;
2974 }
2975
2976 /*
2977 * 2: we may need to capture headers
2978 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2979 if (unlikely((t->logs.logwait & LW_RSPHDR) && t->fe->rsp_cap))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2980 capture_headers(rep->data + msg->som, &txn->hdr_idx,
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2981 txn->rsp.cap, t->fe->rsp_cap);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2982
2983 /*
2984 * 3: we will have to evaluate the filters.
2985 * As opposed to version 1.2, now they will be evaluated in the
2986 * filters order and not in the header order. This means that
2987 * each filter has to be validated among all headers.
2988 *
2989 * Filters are tried with ->be first, then with ->fe if it is
2990 * different from ->be.
2991 */
2992
2993 t->flags &= ~SN_CONN_CLOSED; /* prepare for inspection */
2994
2995 cur_proxy = t->be;
2996 while (1) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2997 struct proxy *rule_set = cur_proxy;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2998
2999 /* try headers filters */
3000 if (rule_set->rsp_exp != NULL) {
3001 if (apply_filters_to_response(t, rep, rule_set->rsp_exp) < 0) {
3002 return_bad_resp:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3003 if (t->srv) {
3004 t->srv->cur_sess--;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3005 t->srv->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3006 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3007 cur_proxy->failed_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3008 return_srv_prx_502:
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3009 buffer_shutr(rep);
3010 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3011 fd_delete(t->srv_fd);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3012 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3013 txn->status = 502;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]3014 client_return(t, error_message(t, HTTP_ERR_502));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3015 if (!(t->flags & SN_ERR_MASK))
3016 t->flags |= SN_ERR_PRXCOND;
3017 if (!(t->flags & SN_FINST_MASK))
3018 t->flags |= SN_FINST_H;
3019 /* We used to have a free connection slot. Since we'll never use it,
3020 * we have to inform the server that it may be used by another session.
3021 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3022 if (t->srv && may_dequeue_tasks(t->srv, cur_proxy))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3023 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3024 return 1;
3025 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3026 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3027
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3028 /* has the response been denied ? */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3029 if (txn->flags & TX_SVDENY) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3030 if (t->srv) {
3031 t->srv->cur_sess--;
3032 t->srv->failed_secu++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3033 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3034 cur_proxy->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3035 goto return_srv_prx_502;
3036 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3037
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3038 /* We might have to check for "Connection:" */
Krzysztof Oledzki336d4752007-12-25 02:40:22 +0100[diff] [blame]3039 if (((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3040 !(t->flags & SN_CONN_CLOSED)) {
3041 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3042 int cur_idx, old_idx, delta, val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3043 struct hdr_idx_elem *cur_hdr;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3044
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3045 cur_next = rep->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
3046 old_idx = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3047
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3048 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
3049 cur_hdr = &txn->hdr_idx.v[cur_idx];
3050 cur_ptr = cur_next;
3051 cur_end = cur_ptr + cur_hdr->len;
3052 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3053
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3054 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
3055 if (val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3056 /* 3 possibilities :
3057 * - we have already set Connection: close,
3058 * so we remove this line.
3059 * - we have not yet set Connection: close,
3060 * but this line indicates close. We leave
3061 * it untouched and set the flag.
3062 * - we have not yet set Connection: close,
3063 * and this line indicates non-close. We
3064 * replace it.
3065 */
3066 if (t->flags & SN_CONN_CLOSED) {
3067 delta = buffer_replace2(rep, cur_ptr, cur_next, NULL, 0);
3068 txn->rsp.eoh += delta;
3069 cur_next += delta;
3070 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3071 txn->hdr_idx.used--;
3072 cur_hdr->len = 0;
3073 } else {
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3074 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
3075 delta = buffer_replace2(rep, cur_ptr + val, cur_end,
3076 "close", 5);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3077 cur_next += delta;
3078 cur_hdr->len += delta;
3079 txn->rsp.eoh += delta;
3080 }
3081 t->flags |= SN_CONN_CLOSED;
3082 }
3083 }
3084 old_idx = cur_idx;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3085 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3086 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3087
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3088 /* add response headers from the rule sets in the same order */
3089 for (cur_idx = 0; cur_idx < rule_set->nb_rspadd; cur_idx++) {
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3090 if (unlikely(http_header_add_tail(rep, &txn->rsp, &txn->hdr_idx,
3091 rule_set->rsp_add[cur_idx])) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3092 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3093 }
3094
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3095 /* check whether we're already working on the frontend */
3096 if (cur_proxy == t->fe)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3097 break;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3098 cur_proxy = t->fe;
3099 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3100
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3101 /*
3102 * 4: check for server cookie.
3103 */
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3104 if (t->be->cookie_name || t->be->appsession_name || t->be->capture_name
3105 || (t->be->options & PR_O_CHK_CACHE))
3106 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3107
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]3108
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3109 /*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3110 * 5: check for cache-control or pragma headers if required.
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]3111 */
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3112 if ((t->be->options & (PR_O_COOK_NOC | PR_O_CHK_CACHE)) != 0)
3113 check_response_for_cacheability(t, rep);
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]3114
3115 /*
3116 * 6: add server cookie in the response if needed
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3117 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3118 if ((t->srv) && !(t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_INS) &&
3119 (!(t->be->options & PR_O_COOK_POST) || (txn->meth == HTTP_METH_POST))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3120 int len;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3121
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3122 /* the server is known, it's not the one the client requested, we have to
3123 * insert a set-cookie here, except if we want to insert only on POST
3124 * requests and this one isn't. Note that servers which don't have cookies
3125 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3126 */
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3127 len = sprintf(trash, "Set-Cookie: %s=%s; path=/",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3128 t->be->cookie_name,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3129 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]3130
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3131 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3132 trash, len)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3133 goto return_bad_resp;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3134 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3135
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3136 /* Here, we will tell an eventual cache on the client side that we don't
3137 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
3138 * Some caches understand the correct form: 'no-cache="set-cookie"', but
3139 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
3140 */
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]3141 if ((t->be->options & PR_O_COOK_NOC) && (txn->flags & TX_CACHEABLE)) {
3142
3143 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
3144
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3145 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3146 "Cache-control: private", 22)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3147 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3148 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3149 }
3150
3151
3152 /*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3153 * 7: check if result will be cacheable with a cookie.
3154 * We'll block the response if security checks have caught
3155 * nasty things such as a cacheable cookie.
3156 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3157 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) ==
3158 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3159 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3160
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3161 /* we're in presence of a cacheable response containing
3162 * a set-cookie header. We'll block it as requested by
3163 * the 'checkcache' option, and send an alert.
3164 */
3165 if (t->srv) {
3166 t->srv->cur_sess--;
3167 t->srv->failed_secu++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3168 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3169 t->be->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3170
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3171 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3172 t->be->id, t->srv?t->srv->id:"<dispatch>");
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3173 send_log(t->be, LOG_ALERT,
3174 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3175 t->be->id, t->srv?t->srv->id:"<dispatch>");
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3176 goto return_srv_prx_502;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3177 }
3178
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3179 /*
3180 * 8: add "Connection: close" if needed and not yet set.
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]3181 * 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]3182 */
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]3183 if (!(t->flags & SN_CONN_CLOSED) &&
Krzysztof Oledzki336d4752007-12-25 02:40:22 +0100[diff] [blame]3184 ((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) {
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]3185 if ((unlikely(msg->sl.st.v_l != 8) ||
3186 unlikely(req->data[msg->som + 7] != '0')) &&
3187 unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3188 "Connection: close", 17)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3189 goto return_bad_resp;
3190 t->flags |= SN_CONN_CLOSED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3191 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3192
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3193
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3194 /*************************************************************
3195 * OK, that's finished for the headers. We have done what we *
3196 * could. Let's switch to the DATA state. *
3197 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3198
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3199 t->srv_state = SV_STDATA;
3200 rep->rlim = rep->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]3201 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3202
3203 /* client connection already closed or option 'forceclose' required :
3204 * we close the server's outgoing connection right now.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3205 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3206 if ((req->l == 0) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3207 (c == CL_STSHUTR || c == CL_STCLOSE || t->be->options & PR_O_FORCE_CLO)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3208 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3209 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3210
3211 /* We must ensure that the read part is still alive when switching
3212 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3213 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3214 tv_add_ifset(&rep->rex, &now, &t->be->timeout.server);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3215
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3216 shutdown(t->srv_fd, SHUT_WR);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3217 t->srv_state = SV_STSHUTW;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3218 }
3219
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3220#ifdef CONFIG_HAP_TCPSPLICE
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3221 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3222 /* TCP splicing supported by both FE and BE */
3223 tcp_splice_splicefd(t->cli_fd, t->srv_fd, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3224 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3225#endif
3226 /* if the user wants to log as soon as possible, without counting
Krzysztof Piotr Oledzkif1e1cb42008-01-20 23:27:02 +0100[diff] [blame]3227 * bytes from the server, then this is the right moment. We have
3228 * to temporarily assign bytes_out to log what we currently have.
3229 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3230 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
3231 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
Willy Tarreau8b3977f2008-01-18 11:16:32 +0100[diff] [blame]3232 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]3233 if (t->fe->to_log & LW_REQ)
3234 http_sess_log(t);
3235 else
3236 tcp_sess_log(t);
Krzysztof Piotr Oledzkif1e1cb42008-01-20 23:27:02 +0100[diff] [blame]3237 t->logs.bytes_out = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3238 }
3239
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3240 /* Note: we must not try to cheat by jumping directly to DATA,
3241 * otherwise we would not let the client side wake up.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3242 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3243
3244 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3245 }
3246 else if (s == SV_STDATA) {
3247 /* read or write error */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3248 if (req->flags & BF_WRITE_ERROR || rep->flags & BF_READ_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3249 buffer_shutr(rep);
3250 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3251 fd_delete(t->srv_fd);
3252 if (t->srv) {
3253 t->srv->cur_sess--;
3254 t->srv->failed_resp++;
3255 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3256 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3257 t->srv_state = SV_STCLOSE;
3258 if (!(t->flags & SN_ERR_MASK))
3259 t->flags |= SN_ERR_SRVCL;
3260 if (!(t->flags & SN_FINST_MASK))
3261 t->flags |= SN_FINST_D;
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 }
3270 /* last read, or end of client write */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3271 else if (rep->flags & BF_READ_NULL || c == CL_STSHUTW || c == CL_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3272 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3273 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3274 t->srv_state = SV_STSHUTR;
3275 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
3276 return 1;
3277 }
3278 /* end of client read and no more data to send */
3279 else if ((c == CL_STSHUTR || c == CL_STCLOSE) && (req->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3280 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3281 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3282 shutdown(t->srv_fd, SHUT_WR);
3283 /* We must ensure that the read part is still alive when switching
3284 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3285 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3286 tv_add_ifset(&rep->rex, &now, &t->be->timeout.server);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3287
3288 t->srv_state = SV_STSHUTW;
3289 return 1;
3290 }
3291 /* read timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3292 else if (tv_isle(&rep->rex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3293 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3294 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3295 t->srv_state = SV_STSHUTR;
3296 if (!(t->flags & SN_ERR_MASK))
3297 t->flags |= SN_ERR_SRVTO;
3298 if (!(t->flags & SN_FINST_MASK))
3299 t->flags |= SN_FINST_D;
3300 return 1;
3301 }
3302 /* write timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3303 else if (tv_isle(&req->wex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3304 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3305 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3306 shutdown(t->srv_fd, SHUT_WR);
3307 /* We must ensure that the read part is still alive when switching
3308 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3309 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3310 tv_add_ifset(&rep->rex, &now, &t->be->timeout.server);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3311 t->srv_state = SV_STSHUTW;
3312 if (!(t->flags & SN_ERR_MASK))
3313 t->flags |= SN_ERR_SRVTO;
3314 if (!(t->flags & SN_FINST_MASK))
3315 t->flags |= SN_FINST_D;
3316 return 1;
3317 }
3318
3319 /* recompute request time-outs */
3320 if (req->l == 0) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3321 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
3322 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3323 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3324 }
3325 }
3326 else { /* buffer not empty, there are still data to be transferred */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3327 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
3328 /* restart writing */
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3329 if (tv_add_ifset(&req->wex, &now, &t->be->timeout.server)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3330 /* FIXME: to prevent the server from expiring read timeouts during writes,
3331 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3332 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3333 }
3334 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3335 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3336 }
3337 }
3338
3339 /* recompute response time-outs */
3340 if (rep->l == BUFSIZE) { /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3341 if (EV_FD_COND_C(t->srv_fd, DIR_RD)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3342 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3343 }
3344 }
3345 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3346 if (EV_FD_COND_S(t->srv_fd, DIR_RD)) {
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3347 if (!tv_add_ifset(&rep->rex, &now, &t->be->timeout.server))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3348 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3349 }
3350 }
3351
3352 return 0; /* other cases change nothing */
3353 }
3354 else if (s == SV_STSHUTR) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3355 if (req->flags & BF_WRITE_ERROR) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3356 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3357 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3358 fd_delete(t->srv_fd);
3359 if (t->srv) {
3360 t->srv->cur_sess--;
3361 t->srv->failed_resp++;
3362 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3363 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3364 //close(t->srv_fd);
3365 t->srv_state = SV_STCLOSE;
3366 if (!(t->flags & SN_ERR_MASK))
3367 t->flags |= SN_ERR_SRVCL;
3368 if (!(t->flags & SN_FINST_MASK))
3369 t->flags |= SN_FINST_D;
3370 /* We used to have a free connection slot. Since we'll never use it,
3371 * we have to inform the server that it may be used by another session.
3372 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3373 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3374 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3375
3376 return 1;
3377 }
3378 else if ((c == CL_STSHUTR || c == CL_STCLOSE) && (req->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3379 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3380 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3381 fd_delete(t->srv_fd);
3382 if (t->srv)
3383 t->srv->cur_sess--;
3384 //close(t->srv_fd);
3385 t->srv_state = SV_STCLOSE;
3386 /* We used to have a free connection slot. Since we'll never use it,
3387 * we have to inform the server that it may be used by another session.
3388 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3389 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3390 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3391
3392 return 1;
3393 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3394 else if (tv_isle(&req->wex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3395 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3396 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3397 fd_delete(t->srv_fd);
3398 if (t->srv)
3399 t->srv->cur_sess--;
3400 //close(t->srv_fd);
3401 t->srv_state = SV_STCLOSE;
3402 if (!(t->flags & SN_ERR_MASK))
3403 t->flags |= SN_ERR_SRVTO;
3404 if (!(t->flags & SN_FINST_MASK))
3405 t->flags |= SN_FINST_D;
3406 /* We used to have a free connection slot. Since we'll never use it,
3407 * we have to inform the server that it may be used by another session.
3408 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3409 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3410 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3411
3412 return 1;
3413 }
3414 else if (req->l == 0) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3415 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
3416 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3417 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3418 }
3419 }
3420 else { /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3421 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
3422 /* restart writing */
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3423 if (!tv_add_ifset(&req->wex, &now, &t->be->timeout.server))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3424 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3425 }
3426 }
3427 return 0;
3428 }
3429 else if (s == SV_STSHUTW) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3430 if (rep->flags & BF_READ_ERROR) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3431 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3432 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3433 fd_delete(t->srv_fd);
3434 if (t->srv) {
3435 t->srv->cur_sess--;
3436 t->srv->failed_resp++;
3437 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3438 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3439 //close(t->srv_fd);
3440 t->srv_state = SV_STCLOSE;
3441 if (!(t->flags & SN_ERR_MASK))
3442 t->flags |= SN_ERR_SRVCL;
3443 if (!(t->flags & SN_FINST_MASK))
3444 t->flags |= SN_FINST_D;
3445 /* We used to have a free connection slot. Since we'll never use it,
3446 * we have to inform the server that it may be used by another session.
3447 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3448 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3449 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3450
3451 return 1;
3452 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3453 else if (rep->flags & BF_READ_NULL || c == CL_STSHUTW || c == CL_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3454 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3455 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3456 fd_delete(t->srv_fd);
3457 if (t->srv)
3458 t->srv->cur_sess--;
3459 //close(t->srv_fd);
3460 t->srv_state = SV_STCLOSE;
3461 /* We used to have a free connection slot. Since we'll never use it,
3462 * we have to inform the server that it may be used by another session.
3463 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3464 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3465 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3466
3467 return 1;
3468 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3469 else if (tv_isle(&rep->rex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3470 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3471 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3472 fd_delete(t->srv_fd);
3473 if (t->srv)
3474 t->srv->cur_sess--;
3475 //close(t->srv_fd);
3476 t->srv_state = SV_STCLOSE;
3477 if (!(t->flags & SN_ERR_MASK))
3478 t->flags |= SN_ERR_SRVTO;
3479 if (!(t->flags & SN_FINST_MASK))
3480 t->flags |= SN_FINST_D;
3481 /* We used to have a free connection slot. Since we'll never use it,
3482 * we have to inform the server that it may be used by another session.
3483 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3484 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3485 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3486
3487 return 1;
3488 }
3489 else if (rep->l == BUFSIZE) { /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3490 if (EV_FD_COND_C(t->srv_fd, DIR_RD)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3491 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3492 }
3493 }
3494 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3495 if (EV_FD_COND_S(t->srv_fd, DIR_RD)) {
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3496 if (!tv_add_ifset(&rep->rex, &now, &t->be->timeout.server))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3497 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3498 }
3499 }
3500 return 0;
3501 }
3502 else { /* SV_STCLOSE : nothing to do */
3503 if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
3504 int len;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3505 len = sprintf(trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3506 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]3507 write(1, trash, len);
3508 }
3509 return 0;
3510 }
3511 return 0;
3512}
3513
3514
3515/*
3516 * Produces data for the session <s> depending on its source. Expects to be
3517 * called with s->cli_state == CL_STSHUTR. Right now, only statistics can be
3518 * produced. It stops by itself by unsetting the SN_SELF_GEN flag from the
3519 * session, which it uses to keep on being called when there is free space in
3520 * the buffer, of simply by letting an empty buffer upon return. It returns 1
3521 * if it changes the session state from CL_STSHUTR, otherwise 0.
3522 */
3523int produce_content(struct session *s)
3524{
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3525 if (s->data_source == DATA_SRC_NONE) {
3526 s->flags &= ~SN_SELF_GEN;
3527 return 1;
3528 }
3529 else if (s->data_source == DATA_SRC_STATS) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3530 /* dump server statistics */
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]3531 int ret = stats_dump_http(s, s->be->uri_auth,
3532 (s->flags & SN_STAT_FMTCSV) ? 0 : STAT_FMT_HTML);
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3533 if (ret >= 0)
3534 return ret;
3535 /* -1 indicates an error */
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3536 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3537
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3538 /* unknown data source or internal error */
3539 s->txn.status = 500;
3540 client_retnclose(s, error_message(s, HTTP_ERR_500));
3541 if (!(s->flags & SN_ERR_MASK))
3542 s->flags |= SN_ERR_PRXCOND;
3543 if (!(s->flags & SN_FINST_MASK))
3544 s->flags |= SN_FINST_R;
3545 s->flags &= ~SN_SELF_GEN;
3546 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3547}
3548
3549
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3550/* Iterate the same filter through all request headers.
3551 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3552 * Since it can manage the switch to another backend, it updates the per-proxy
3553 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3554 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3555int 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]3556{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3557 char term;
3558 char *cur_ptr, *cur_end, *cur_next;
3559 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3560 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3561 struct hdr_idx_elem *cur_hdr;
3562 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]3563
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3564 last_hdr = 0;
3565
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3566 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3567 old_idx = 0;
3568
3569 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3570 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3571 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3572 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3573 (exp->action == ACT_ALLOW ||
3574 exp->action == ACT_DENY ||
3575 exp->action == ACT_TARPIT))
3576 return 0;
3577
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3578 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3579 if (!cur_idx)
3580 break;
3581
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3582 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3583 cur_ptr = cur_next;
3584 cur_end = cur_ptr + cur_hdr->len;
3585 cur_next = cur_end + cur_hdr->cr + 1;
3586
3587 /* Now we have one header between cur_ptr and cur_end,
3588 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3589 */
3590
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3591 /* The annoying part is that pattern matching needs
3592 * that we modify the contents to null-terminate all
3593 * strings before testing them.
3594 */
3595
3596 term = *cur_end;
3597 *cur_end = '\0';
3598
3599 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3600 switch (exp->action) {
3601 case ACT_SETBE:
3602 /* It is not possible to jump a second time.
3603 * FIXME: should we return an HTTP/500 here so that
3604 * the admin knows there's a problem ?
3605 */
3606 if (t->be != t->fe)
3607 break;
3608
3609 /* Swithing Proxy */
3610 t->be = (struct proxy *) exp->replace;
3611
3612 /* right now, the backend switch is not too much complicated
3613 * because we have associated req_cap and rsp_cap to the
3614 * frontend, and the beconn will be updated later.
3615 */
3616
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3617 t->rep->rto = t->req->wto = t->be->timeout.server;
3618 t->req->cto = t->be->timeout.connect;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3619 t->conn_retries = t->be->conn_retries;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3620 last_hdr = 1;
3621 break;
3622
3623 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3624 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3625 last_hdr = 1;
3626 break;
3627
3628 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3629 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3630 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3631 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3632 break;
3633
3634 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3635 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3636 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3637 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3638 break;
3639
3640 case ACT_REPLACE:
3641 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3642 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3643 /* FIXME: if the user adds a newline in the replacement, the
3644 * index will not be recalculated for now, and the new line
3645 * will not be counted as a new header.
3646 */
3647
3648 cur_end += delta;
3649 cur_next += delta;
3650 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3651 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3652 break;
3653
3654 case ACT_REMOVE:
3655 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
3656 cur_next += delta;
3657
3658 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3659 txn->req.eoh += delta;
3660 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3661 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3662 cur_hdr->len = 0;
3663 cur_end = NULL; /* null-term has been rewritten */
3664 break;
3665
3666 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3667 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3668 if (cur_end)
3669 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3670
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3671 /* keep the link from this header to next one in case of later
3672 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3673 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3674 old_idx = cur_idx;
3675 }
3676 return 0;
3677}
3678
3679
3680/* Apply the filter to the request line.
3681 * Returns 0 if nothing has been done, 1 if the filter has been applied,
3682 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3683 * Since it can manage the switch to another backend, it updates the per-proxy
3684 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3685 */
3686int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
3687{
3688 char term;
3689 char *cur_ptr, *cur_end;
3690 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3691 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3692 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3693
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3694
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3695 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3696 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3697 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3698 (exp->action == ACT_ALLOW ||
3699 exp->action == ACT_DENY ||
3700 exp->action == ACT_TARPIT))
3701 return 0;
3702 else if (exp->action == ACT_REMOVE)
3703 return 0;
3704
3705 done = 0;
3706
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3707 cur_ptr = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3708 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3709
3710 /* Now we have the request line between cur_ptr and cur_end */
3711
3712 /* The annoying part is that pattern matching needs
3713 * that we modify the contents to null-terminate all
3714 * strings before testing them.
3715 */
3716
3717 term = *cur_end;
3718 *cur_end = '\0';
3719
3720 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3721 switch (exp->action) {
3722 case ACT_SETBE:
3723 /* It is not possible to jump a second time.
3724 * FIXME: should we return an HTTP/500 here so that
3725 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3726 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3727 if (t->be != t->fe)
3728 break;
3729
3730 /* Swithing Proxy */
3731 t->be = (struct proxy *) exp->replace;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3732
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3733 /* right now, the backend switch is not too much complicated
3734 * because we have associated req_cap and rsp_cap to the
3735 * frontend, and the beconn will be updated later.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3736 */
3737
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3738 t->rep->rto = t->req->wto = t->be->timeout.server;
3739 t->req->cto = t->be->timeout.connect;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3740 t->conn_retries = t->be->conn_retries;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3741 done = 1;
3742 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3743
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3744 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3745 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3746 done = 1;
3747 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3748
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3749 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3750 txn->flags |= TX_CLDENY;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3751 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3752 done = 1;
3753 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3754
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3755 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3756 txn->flags |= TX_CLTARPIT;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3757 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3758 done = 1;
3759 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3760
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3761 case ACT_REPLACE:
3762 *cur_end = term; /* restore the string terminator */
3763 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3764 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3765 /* FIXME: if the user adds a newline in the replacement, the
3766 * index will not be recalculated for now, and the new line
3767 * will not be counted as a new header.
3768 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3769
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3770 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3771 cur_end += delta;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3772
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3773 txn->req.sol = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3774 cur_end = (char *)http_parse_reqline(&txn->req, req->data,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3775 HTTP_MSG_RQMETH,
3776 cur_ptr, cur_end + 1,
3777 NULL, NULL);
3778 if (unlikely(!cur_end))
3779 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3780
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3781 /* we have a full request and we know that we have either a CR
3782 * or an LF at <ptr>.
3783 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3784 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
3785 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]3786 /* there is no point trying this regex on headers */
3787 return 1;
3788 }
3789 }
3790 *cur_end = term; /* restore the string terminator */
3791 return done;
3792}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]3793
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3794
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3795
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3796/*
3797 * Apply all the req filters <exp> to all headers in buffer <req> of session <t>.
3798 * 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]3799 * unparsable request. Since it can manage the switch to another backend, it
3800 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3801 */
3802int apply_filters_to_request(struct session *t, struct buffer *req, struct hdr_exp *exp)
3803{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3804 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3805 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3806 while (exp && !(txn->flags & (TX_CLDENY|TX_CLTARPIT))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3807 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3808
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3809 /*
3810 * The interleaving of transformations and verdicts
3811 * makes it difficult to decide to continue or stop
3812 * the evaluation.
3813 */
3814
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3815 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3816 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
3817 exp->action == ACT_TARPIT || exp->action == ACT_PASS)) {
3818 exp = exp->next;
3819 continue;
3820 }
3821
3822 /* Apply the filter to the request line. */
3823 ret = apply_filter_to_req_line(t, req, exp);
3824 if (unlikely(ret < 0))
3825 return -1;
3826
3827 if (likely(ret == 0)) {
3828 /* The filter did not match the request, it can be
3829 * iterated through all headers.
3830 */
3831 apply_filter_to_req_headers(t, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3832 }
3833 exp = exp->next;
3834 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3835 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3836}
3837
3838
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3839
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3840/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3841 * Manage client-side cookie. It can impact performance by about 2% so it is
3842 * desirable to call it only when needed.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3843 */
3844void manage_client_side_cookies(struct session *t, struct buffer *req)
3845{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3846 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3847 char *p1, *p2, *p3, *p4;
3848 char *del_colon, *del_cookie, *colon;
3849 int app_cookies;
3850
3851 appsess *asession_temp = NULL;
3852 appsess local_asession;
3853
3854 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3855 int cur_idx, old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3856
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3857 /* Iterate through the headers.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3858 * we start with the start line.
3859 */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]3860 old_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3861 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3862
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3863 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3864 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3865 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3866
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3867 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3868 cur_ptr = cur_next;
3869 cur_end = cur_ptr + cur_hdr->len;
3870 cur_next = cur_end + cur_hdr->cr + 1;
3871
3872 /* We have one full header between cur_ptr and cur_end, and the
3873 * next header starts at cur_next. We're only interested in
3874 * "Cookie:" headers.
3875 */
3876
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3877 val = http_header_match2(cur_ptr, cur_end, "Cookie", 6);
3878 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3879 old_idx = cur_idx;
3880 continue;
3881 }
3882
3883 /* Now look for cookies. Conforming to RFC2109, we have to support
3884 * attributes whose name begin with a '$', and associate them with
3885 * the right cookie, if we want to delete this cookie.
3886 * So there are 3 cases for each cookie read :
3887 * 1) it's a special attribute, beginning with a '$' : ignore it.
3888 * 2) it's a server id cookie that we *MAY* want to delete : save
3889 * some pointers on it (last semi-colon, beginning of cookie...)
3890 * 3) it's an application cookie : we *MAY* have to delete a previous
3891 * "special" cookie.
3892 * At the end of loop, if a "special" cookie remains, we may have to
3893 * remove it. If no application cookie persists in the header, we
3894 * *MUST* delete it
3895 */
3896
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3897 colon = p1 = cur_ptr + val; /* first non-space char after 'Cookie:' */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3898
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3899 /* del_cookie == NULL => nothing to be deleted */
3900 del_colon = del_cookie = NULL;
3901 app_cookies = 0;
3902
3903 while (p1 < cur_end) {
3904 /* skip spaces and colons, but keep an eye on these ones */
3905 while (p1 < cur_end) {
3906 if (*p1 == ';' || *p1 == ',')
3907 colon = p1;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3908 else if (!isspace((unsigned char)*p1))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3909 break;
3910 p1++;
3911 }
3912
3913 if (p1 == cur_end)
3914 break;
3915
3916 /* p1 is at the beginning of the cookie name */
3917 p2 = p1;
3918 while (p2 < cur_end && *p2 != '=')
3919 p2++;
3920
3921 if (p2 == cur_end)
3922 break;
3923
3924 p3 = p2 + 1; /* skips the '=' sign */
3925 if (p3 == cur_end)
3926 break;
3927
3928 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3929 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';' && *p4 != ',')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3930 p4++;
3931
3932 /* here, we have the cookie name between p1 and p2,
3933 * and its value between p3 and p4.
3934 * we can process it :
3935 *
3936 * Cookie: NAME=VALUE;
3937 * | || || |
3938 * | || || +--> p4
3939 * | || |+-------> p3
3940 * | || +--------> p2
3941 * | |+------------> p1
3942 * | +-------------> colon
3943 * +--------------------> cur_ptr
3944 */
3945
3946 if (*p1 == '$') {
3947 /* skip this one */
3948 }
3949 else {
3950 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3951 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3952 txn->cli_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3953 (p4 - p1 >= t->fe->capture_namelen) &&
3954 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3955 int log_len = p4 - p1;
3956
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]3957 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3958 Alert("HTTP logging : out of memory.\n");
3959 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3960 if (log_len > t->fe->capture_len)
3961 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3962 memcpy(txn->cli_cookie, p1, log_len);
3963 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3964 }
3965 }
3966
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3967 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
3968 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3969 /* Cool... it's the right one */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3970 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3971 char *delim;
3972
3973 /* if we're in cookie prefix mode, we'll search the delimitor so that we
3974 * have the server ID betweek p3 and delim, and the original cookie between
3975 * delim+1 and p4. Otherwise, delim==p4 :
3976 *
3977 * Cookie: NAME=SRV~VALUE;
3978 * | || || | |
3979 * | || || | +--> p4
3980 * | || || +--------> delim
3981 * | || |+-----------> p3
3982 * | || +------------> p2
3983 * | |+----------------> p1
3984 * | +-----------------> colon
3985 * +------------------------> cur_ptr
3986 */
3987
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3988 if (t->be->options & PR_O_COOK_PFX) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3989 for (delim = p3; delim < p4; delim++)
3990 if (*delim == COOKIE_DELIM)
3991 break;
3992 }
3993 else
3994 delim = p4;
3995
3996
3997 /* Here, we'll look for the first running server which supports the cookie.
3998 * This allows to share a same cookie between several servers, for example
3999 * to dedicate backup servers to specific servers only.
4000 * However, to prevent clients from sticking to cookie-less backup server
4001 * when they have incidentely learned an empty cookie, we simply ignore
4002 * empty cookies and mark them as invalid.
4003 */
4004 if (delim == p3)
4005 srv = NULL;
4006
4007 while (srv) {
Willy Tarreau92f2ab12007-02-02 22:14:47 +0100[diff] [blame]4008 if (srv->cookie && (srv->cklen == delim - p3) &&
4009 !memcmp(p3, srv->cookie, delim - p3)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4010 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4011 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4012 txn->flags &= ~TX_CK_MASK;
4013 txn->flags |= TX_CK_VALID;
4014 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4015 t->srv = srv;
4016 break;
4017 } else {
4018 /* we found a server, but it's down */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4019 txn->flags &= ~TX_CK_MASK;
4020 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4021 }
4022 }
4023 srv = srv->next;
4024 }
4025
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4026 if (!srv && !(txn->flags & TX_CK_DOWN)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4027 /* no server matched this cookie */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4028 txn->flags &= ~TX_CK_MASK;
4029 txn->flags |= TX_CK_INVALID;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4030 }
4031
4032 /* depending on the cookie mode, we may have to either :
4033 * - delete the complete cookie if we're in insert+indirect mode, so that
4034 * the server never sees it ;
4035 * - remove the server id from the cookie value, and tag the cookie as an
4036 * application cookie so that it does not get accidentely removed later,
4037 * if we're in cookie prefix mode
4038 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4039 if ((t->be->options & PR_O_COOK_PFX) && (delim != p4)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4040 int delta; /* negative */
4041
4042 delta = buffer_replace2(req, p3, delim + 1, NULL, 0);
4043 p4 += delta;
4044 cur_end += delta;
4045 cur_next += delta;
4046 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4047 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4048
4049 del_cookie = del_colon = NULL;
4050 app_cookies++; /* protect the header from deletion */
4051 }
4052 else if (del_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4053 (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]4054 del_cookie = p1;
4055 del_colon = colon;
4056 }
4057 } else {
4058 /* now we know that we must keep this cookie since it's
4059 * not ours. But if we wanted to delete our cookie
4060 * earlier, we cannot remove the complete header, but we
4061 * can remove the previous block itself.
4062 */
4063 app_cookies++;
4064
4065 if (del_cookie != NULL) {
4066 int delta; /* negative */
4067
4068 delta = buffer_replace2(req, del_cookie, p1, NULL, 0);
4069 p4 += delta;
4070 cur_end += delta;
4071 cur_next += delta;
4072 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4073 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4074 del_cookie = del_colon = NULL;
4075 }
4076 }
4077
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4078 if ((t->be->appsession_name != NULL) &&
4079 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4080 /* first, let's see if the cookie is our appcookie*/
4081
4082 /* Cool... it's the right one */
4083
4084 asession_temp = &local_asession;
4085
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4086 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4087 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
4088 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
4089 return;
4090 }
4091
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4092 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4093 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4094 asession_temp->serverid = NULL;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4095
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4096 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4097 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
4098 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4099 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4100 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4101 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4102 Alert("Not enough memory process_cli():asession:calloc().\n");
4103 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4104 return;
4105 }
4106
4107 asession_temp->sessid = local_asession.sessid;
4108 asession_temp->serverid = local_asession.serverid;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4109 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4110 } else {
4111 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4112 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4113 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4114 if (asession_temp->serverid == NULL) {
4115 Alert("Found Application Session without matching server.\n");
4116 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4117 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4118 while (srv) {
4119 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4120 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4121 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4122 txn->flags &= ~TX_CK_MASK;
4123 txn->flags |= TX_CK_VALID;
4124 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4125 t->srv = srv;
4126 break;
4127 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4128 txn->flags &= ~TX_CK_MASK;
4129 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4130 }
4131 }
4132 srv = srv->next;
4133 }/* end while(srv) */
4134 }/* end else if server == NULL */
4135
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]4136 tv_add(&asession_temp->expire, &now, &t->be->timeout.appsession);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4137 }/* end if ((t->proxy->appsession_name != NULL) ... */
4138 }
4139
4140 /* we'll have to look for another cookie ... */
4141 p1 = p4;
4142 } /* while (p1 < cur_end) */
4143
4144 /* There's no more cookie on this line.
4145 * We may have marked the last one(s) for deletion.
4146 * We must do this now in two ways :
4147 * - if there is no app cookie, we simply delete the header ;
4148 * - if there are app cookies, we must delete the end of the
4149 * string properly, including the colon/semi-colon before
4150 * the cookie name.
4151 */
4152 if (del_cookie != NULL) {
4153 int delta;
4154 if (app_cookies) {
4155 delta = buffer_replace2(req, del_colon, cur_end, NULL, 0);
4156 cur_end = del_colon;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4157 cur_hdr->len += delta;
4158 } else {
4159 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4160
4161 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4162 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4163 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4164 cur_hdr->len = 0;
4165 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]4166 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4167 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4168 }
4169
4170 /* keep the link from this header to next one */
4171 old_idx = cur_idx;
4172 } /* end of cookie processing on this header */
4173}
4174
4175
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4176/* Iterate the same filter through all response headers contained in <rtr>.
4177 * Returns 1 if this filter can be stopped upon return, otherwise 0.
4178 */
4179int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4180{
4181 char term;
4182 char *cur_ptr, *cur_end, *cur_next;
4183 int cur_idx, old_idx, last_hdr;
4184 struct http_txn *txn = &t->txn;
4185 struct hdr_idx_elem *cur_hdr;
4186 int len, delta;
4187
4188 last_hdr = 0;
4189
4190 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4191 old_idx = 0;
4192
4193 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4194 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4195 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4196 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4197 (exp->action == ACT_ALLOW ||
4198 exp->action == ACT_DENY))
4199 return 0;
4200
4201 cur_idx = txn->hdr_idx.v[old_idx].next;
4202 if (!cur_idx)
4203 break;
4204
4205 cur_hdr = &txn->hdr_idx.v[cur_idx];
4206 cur_ptr = cur_next;
4207 cur_end = cur_ptr + cur_hdr->len;
4208 cur_next = cur_end + cur_hdr->cr + 1;
4209
4210 /* Now we have one header between cur_ptr and cur_end,
4211 * and the next header starts at cur_next.
4212 */
4213
4214 /* The annoying part is that pattern matching needs
4215 * that we modify the contents to null-terminate all
4216 * strings before testing them.
4217 */
4218
4219 term = *cur_end;
4220 *cur_end = '\0';
4221
4222 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4223 switch (exp->action) {
4224 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4225 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4226 last_hdr = 1;
4227 break;
4228
4229 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4230 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4231 last_hdr = 1;
4232 break;
4233
4234 case ACT_REPLACE:
4235 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4236 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4237 /* FIXME: if the user adds a newline in the replacement, the
4238 * index will not be recalculated for now, and the new line
4239 * will not be counted as a new header.
4240 */
4241
4242 cur_end += delta;
4243 cur_next += delta;
4244 cur_hdr->len += delta;
4245 txn->rsp.eoh += delta;
4246 break;
4247
4248 case ACT_REMOVE:
4249 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4250 cur_next += delta;
4251
4252 /* FIXME: this should be a separate function */
4253 txn->rsp.eoh += delta;
4254 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4255 txn->hdr_idx.used--;
4256 cur_hdr->len = 0;
4257 cur_end = NULL; /* null-term has been rewritten */
4258 break;
4259
4260 }
4261 }
4262 if (cur_end)
4263 *cur_end = term; /* restore the string terminator */
4264
4265 /* keep the link from this header to next one in case of later
4266 * removal of next header.
4267 */
4268 old_idx = cur_idx;
4269 }
4270 return 0;
4271}
4272
4273
4274/* Apply the filter to the status line in the response buffer <rtr>.
4275 * Returns 0 if nothing has been done, 1 if the filter has been applied,
4276 * or -1 if a replacement resulted in an invalid status line.
4277 */
4278int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4279{
4280 char term;
4281 char *cur_ptr, *cur_end;
4282 int done;
4283 struct http_txn *txn = &t->txn;
4284 int len, delta;
4285
4286
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4287 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4288 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4289 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4290 (exp->action == ACT_ALLOW ||
4291 exp->action == ACT_DENY))
4292 return 0;
4293 else if (exp->action == ACT_REMOVE)
4294 return 0;
4295
4296 done = 0;
4297
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4298 cur_ptr = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4299 cur_end = cur_ptr + txn->rsp.sl.rq.l;
4300
4301 /* Now we have the status line between cur_ptr and cur_end */
4302
4303 /* The annoying part is that pattern matching needs
4304 * that we modify the contents to null-terminate all
4305 * strings before testing them.
4306 */
4307
4308 term = *cur_end;
4309 *cur_end = '\0';
4310
4311 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4312 switch (exp->action) {
4313 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4314 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4315 done = 1;
4316 break;
4317
4318 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4319 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4320 done = 1;
4321 break;
4322
4323 case ACT_REPLACE:
4324 *cur_end = term; /* restore the string terminator */
4325 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4326 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4327 /* FIXME: if the user adds a newline in the replacement, the
4328 * index will not be recalculated for now, and the new line
4329 * will not be counted as a new header.
4330 */
4331
4332 txn->rsp.eoh += delta;
4333 cur_end += delta;
4334
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4335 txn->rsp.sol = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4336 cur_end = (char *)http_parse_stsline(&txn->rsp, rtr->data,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]4337 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4338 cur_ptr, cur_end + 1,
4339 NULL, NULL);
4340 if (unlikely(!cur_end))
4341 return -1;
4342
4343 /* we have a full respnse and we know that we have either a CR
4344 * or an LF at <ptr>.
4345 */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4346 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]4347 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.rq.l, *cur_end == '\r');
4348 /* there is no point trying this regex on headers */
4349 return 1;
4350 }
4351 }
4352 *cur_end = term; /* restore the string terminator */
4353 return done;
4354}
4355
4356
4357
4358/*
4359 * Apply all the resp filters <exp> to all headers in buffer <rtr> of session <t>.
4360 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
4361 * unparsable response.
4362 */
4363int apply_filters_to_response(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4364{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4365 struct http_txn *txn = &t->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4366 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4367 while (exp && !(txn->flags & TX_SVDENY)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4368 int ret;
4369
4370 /*
4371 * The interleaving of transformations and verdicts
4372 * makes it difficult to decide to continue or stop
4373 * the evaluation.
4374 */
4375
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4376 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4377 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4378 exp->action == ACT_PASS)) {
4379 exp = exp->next;
4380 continue;
4381 }
4382
4383 /* Apply the filter to the status line. */
4384 ret = apply_filter_to_sts_line(t, rtr, exp);
4385 if (unlikely(ret < 0))
4386 return -1;
4387
4388 if (likely(ret == 0)) {
4389 /* The filter did not match the response, it can be
4390 * iterated through all headers.
4391 */
4392 apply_filter_to_resp_headers(t, rtr, exp);
4393 }
4394 exp = exp->next;
4395 }
4396 return 0;
4397}
4398
4399
4400
4401/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]4402 * Manage server-side cookies. It can impact performance by about 2% so it is
4403 * desirable to call it only when needed.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4404 */
4405void manage_server_side_cookies(struct session *t, struct buffer *rtr)
4406{
4407 struct http_txn *txn = &t->txn;
4408 char *p1, *p2, *p3, *p4;
4409
4410 appsess *asession_temp = NULL;
4411 appsess local_asession;
4412
4413 char *cur_ptr, *cur_end, *cur_next;
4414 int cur_idx, old_idx, delta;
4415
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4416 /* Iterate through the headers.
4417 * we start with the start line.
4418 */
4419 old_idx = 0;
4420 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4421
4422 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
4423 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4424 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4425
4426 cur_hdr = &txn->hdr_idx.v[cur_idx];
4427 cur_ptr = cur_next;
4428 cur_end = cur_ptr + cur_hdr->len;
4429 cur_next = cur_end + cur_hdr->cr + 1;
4430
4431 /* We have one full header between cur_ptr and cur_end, and the
4432 * next header starts at cur_next. We're only interested in
4433 * "Cookie:" headers.
4434 */
4435
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4436 val = http_header_match2(cur_ptr, cur_end, "Set-Cookie", 10);
4437 if (!val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4438 old_idx = cur_idx;
4439 continue;
4440 }
4441
4442 /* OK, right now we know we have a set-cookie at cur_ptr */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4443 txn->flags |= TX_SCK_ANY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4444
4445
4446 /* maybe we only wanted to see if there was a set-cookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4447 if (t->be->cookie_name == NULL &&
4448 t->be->appsession_name == NULL &&
4449 t->be->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4450 return;
4451
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4452 p1 = cur_ptr + val; /* first non-space char after 'Set-Cookie:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4453
4454 while (p1 < cur_end) { /* in fact, we'll break after the first cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4455 if (p1 == cur_end || *p1 == ';') /* end of cookie */
4456 break;
4457
4458 /* p1 is at the beginning of the cookie name */
4459 p2 = p1;
4460
4461 while (p2 < cur_end && *p2 != '=' && *p2 != ';')
4462 p2++;
4463
4464 if (p2 == cur_end || *p2 == ';') /* next cookie */
4465 break;
4466
4467 p3 = p2 + 1; /* skip the '=' sign */
4468 if (p3 == cur_end)
4469 break;
4470
4471 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4472 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';')
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4473 p4++;
4474
4475 /* here, we have the cookie name between p1 and p2,
4476 * and its value between p3 and p4.
4477 * we can process it.
4478 */
4479
4480 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4481 if (t->be->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4482 txn->srv_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4483 (p4 - p1 >= t->be->capture_namelen) &&
4484 memcmp(p1, t->be->capture_name, t->be->capture_namelen) == 0) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4485 int log_len = p4 - p1;
4486
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]4487 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4488 Alert("HTTP logging : out of memory.\n");
4489 }
4490
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4491 if (log_len > t->be->capture_len)
4492 log_len = t->be->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4493 memcpy(txn->srv_cookie, p1, log_len);
4494 txn->srv_cookie[log_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4495 }
4496
4497 /* now check if we need to process it for persistence */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4498 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4499 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4500 /* Cool... it's the right one */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4501 txn->flags |= TX_SCK_SEEN;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4502
4503 /* If the cookie is in insert mode on a known server, we'll delete
4504 * this occurrence because we'll insert another one later.
4505 * We'll delete it too if the "indirect" option is set and we're in
4506 * a direct access. */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4507 if (((t->srv) && (t->be->options & PR_O_COOK_INS)) ||
4508 ((t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_IND))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4509 /* this header must be deleted */
4510 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4511 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4512 txn->hdr_idx.used--;
4513 cur_hdr->len = 0;
4514 cur_next += delta;
4515 txn->rsp.eoh += delta;
4516
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4517 txn->flags |= TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4518 }
4519 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4520 (t->be->options & PR_O_COOK_RW)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4521 /* replace bytes p3->p4 with the cookie name associated
4522 * with this server since we know it.
4523 */
4524 delta = buffer_replace2(rtr, p3, p4, t->srv->cookie, t->srv->cklen);
4525 cur_hdr->len += delta;
4526 cur_next += delta;
4527 txn->rsp.eoh += delta;
4528
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4529 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4530 }
4531 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4532 (t->be->options & PR_O_COOK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4533 /* insert the cookie name associated with this server
4534 * before existing cookie, and insert a delimitor between them..
4535 */
4536 delta = buffer_replace2(rtr, p3, p3, t->srv->cookie, t->srv->cklen + 1);
4537 cur_hdr->len += delta;
4538 cur_next += delta;
4539 txn->rsp.eoh += delta;
4540
4541 p3[t->srv->cklen] = COOKIE_DELIM;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4542 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4543 }
4544 }
4545 /* next, let's see if the cookie is our appcookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4546 else if ((t->be->appsession_name != NULL) &&
4547 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4548
4549 /* Cool... it's the right one */
4550
4551 size_t server_id_len = strlen(t->srv->id) + 1;
4552 asession_temp = &local_asession;
4553
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4554 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4555 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4556 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4557 return;
4558 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4559 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4560 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4561 asession_temp->serverid = NULL;
4562
4563 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4564 if (appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid) == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4565 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4566 Alert("Not enough Memory process_srv():asession:calloc().\n");
4567 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
4568 return;
4569 }
4570 asession_temp->sessid = local_asession.sessid;
4571 asession_temp->serverid = local_asession.serverid;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4572 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
4573 } else {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4574 /* free wasted memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4575 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4576 }
4577
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4578 if (asession_temp->serverid == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4579 if ((asession_temp->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4580 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4581 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4582 return;
4583 }
4584 asession_temp->serverid[0] = '\0';
4585 }
4586
4587 if (asession_temp->serverid[0] == '\0')
4588 memcpy(asession_temp->serverid, t->srv->id, server_id_len);
4589
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]4590 tv_add(&asession_temp->expire, &now, &t->be->timeout.appsession);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4591
4592#if defined(DEBUG_HASH)
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4593 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4594#endif
4595 }/* end if ((t->proxy->appsession_name != NULL) ... */
4596 break; /* we don't want to loop again since there cannot be another cookie on the same line */
4597 } /* we're now at the end of the cookie value */
4598
4599 /* keep the link from this header to next one */
4600 old_idx = cur_idx;
4601 } /* end of cookie processing on this header */
4602}
4603
4604
4605
4606/*
4607 * Check if response is cacheable or not. Updates t->flags.
4608 */
4609void check_response_for_cacheability(struct session *t, struct buffer *rtr)
4610{
4611 struct http_txn *txn = &t->txn;
4612 char *p1, *p2;
4613
4614 char *cur_ptr, *cur_end, *cur_next;
4615 int cur_idx;
4616
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]4617 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4618 return;
4619
4620 /* Iterate through the headers.
4621 * we start with the start line.
4622 */
4623 cur_idx = 0;
4624 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4625
4626 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4627 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4628 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4629
4630 cur_hdr = &txn->hdr_idx.v[cur_idx];
4631 cur_ptr = cur_next;
4632 cur_end = cur_ptr + cur_hdr->len;
4633 cur_next = cur_end + cur_hdr->cr + 1;
4634
4635 /* We have one full header between cur_ptr and cur_end, and the
4636 * next header starts at cur_next. We're only interested in
4637 * "Cookie:" headers.
4638 */
4639
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4640 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
4641 if (val) {
4642 if ((cur_end - (cur_ptr + val) >= 8) &&
4643 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
4644 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
4645 return;
4646 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4647 }
4648
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4649 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
4650 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4651 continue;
4652
4653 /* OK, right now we know we have a cache-control header at cur_ptr */
4654
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4655 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4656
4657 if (p1 >= cur_end) /* no more info */
4658 continue;
4659
4660 /* p1 is at the beginning of the value */
4661 p2 = p1;
4662
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4663 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4664 p2++;
4665
4666 /* we have a complete value between p1 and p2 */
4667 if (p2 < cur_end && *p2 == '=') {
4668 /* we have something of the form no-cache="set-cookie" */
4669 if ((cur_end - p1 >= 21) &&
4670 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
4671 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4672 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4673 continue;
4674 }
4675
4676 /* OK, so we know that either p2 points to the end of string or to a comma */
4677 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
4678 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
4679 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
4680 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4681 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4682 return;
4683 }
4684
4685 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4686 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4687 continue;
4688 }
4689 }
4690}
4691
4692
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4693/*
4694 * Try to retrieve a known appsession in the URI, then the associated server.
4695 * If the server is found, it's assigned to the session.
4696 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4697void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4698{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4699 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4700 appsess *asession_temp = NULL;
4701 appsess local_asession;
4702 char *request_line;
4703
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4704 if (t->be->appsession_name == NULL ||
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]4705 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST) ||
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4706 (request_line = memchr(begin, ';', len)) == NULL ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4707 ((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]4708 return;
4709
4710 /* skip ';' */
4711 request_line++;
4712
4713 /* look if we have a jsessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4714 if (strncasecmp(request_line, t->be->appsession_name, t->be->appsession_name_len) != 0)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4715 return;
4716
4717 /* skip jsessionid= */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4718 request_line += t->be->appsession_name_len + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4719
4720 /* First try if we already have an appsession */
4721 asession_temp = &local_asession;
4722
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4723 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4724 Alert("Not enough memory process_cli():asession_temp->sessid:calloc().\n");
4725 send_log(t->be, LOG_ALERT, "Not enough Memory process_cli():asession_temp->sessid:calloc().\n");
4726 return;
4727 }
4728
4729 /* Copy the sessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4730 memcpy(asession_temp->sessid, request_line, t->be->appsession_len);
4731 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4732 asession_temp->serverid = NULL;
4733
4734 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4735 if (appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid) == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4736 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4737 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4738 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4739 Alert("Not enough memory process_cli():asession:calloc().\n");
4740 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4741 return;
4742 }
4743 asession_temp->sessid = local_asession.sessid;
4744 asession_temp->serverid = local_asession.serverid;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4745 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4746 }
4747 else {
4748 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4749 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4750 }
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4751
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]4752 tv_add(&asession_temp->expire, &now, &t->be->timeout.appsession);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4753 asession_temp->request_count++;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4754
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4755#if defined(DEBUG_HASH)
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4756 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4757#endif
4758 if (asession_temp->serverid == NULL) {
4759 Alert("Found Application Session without matching server.\n");
4760 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4761 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4762 while (srv) {
4763 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4764 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4765 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4766 txn->flags &= ~TX_CK_MASK;
4767 txn->flags |= TX_CK_VALID;
4768 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4769 t->srv = srv;
4770 break;
4771 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4772 txn->flags &= ~TX_CK_MASK;
4773 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4774 }
4775 }
4776 srv = srv->next;
4777 }
4778 }
4779}
4780
4781
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4782/*
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4783 * In a GET or HEAD request, check if the requested URI matches the stats uri
4784 * for the current backend, and if an authorization has been passed and is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4785 *
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4786 * 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]4787 * 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]4788 * produce_content() can be called to start sending data.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4789 *
4790 * Returns 1 if the session's state changes, otherwise 0.
4791 */
4792int stats_check_uri_auth(struct session *t, struct proxy *backend)
4793{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4794 struct http_txn *txn = &t->txn;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4795 struct uri_auth *uri_auth = backend->uri_auth;
4796 struct user_auth *user;
4797 int authenticated, cur_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4798 char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4799
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4800 /* check URI size */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4801 if (uri_auth->uri_len > txn->req.sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4802 return 0;
4803
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4804 h = t->req->data + txn->req.sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4805
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4806 /* the URI is in h */
4807 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4808 return 0;
4809
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4810 h += uri_auth->uri_len;
4811 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 3) {
4812 if (memcmp(h, ";up", 3) == 0) {
4813 t->flags |= SN_STAT_HIDEDWN;
4814 break;
4815 }
4816 h++;
4817 }
4818
4819 if (uri_auth->refresh) {
4820 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4821 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 10) {
4822 if (memcmp(h, ";norefresh", 10) == 0) {
4823 t->flags |= SN_STAT_NORFRSH;
4824 break;
4825 }
4826 h++;
4827 }
4828 }
4829
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]4830 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4831 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 4) {
4832 if (memcmp(h, ";csv", 4) == 0) {
4833 t->flags |= SN_STAT_FMTCSV;
4834 break;
4835 }
4836 h++;
4837 }
4838
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4839 /* we are in front of a interceptable URI. Let's check
4840 * if there's an authentication and if it's valid.
4841 */
4842 user = uri_auth->users;
4843 if (!user) {
4844 /* no user auth required, it's OK */
4845 authenticated = 1;
4846 } else {
4847 authenticated = 0;
4848
4849 /* a user list is defined, we have to check.
4850 * skip 21 chars for "Authorization: Basic ".
4851 */
4852
4853 /* FIXME: this should move to an earlier place */
4854 cur_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4855 h = t->req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
4856 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4857 int len = txn->hdr_idx.v[cur_idx].len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4858 if (len > 14 &&
4859 !strncasecmp("Authorization:", h, 14)) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4860 txn->auth_hdr.str = h;
4861 txn->auth_hdr.len = len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4862 break;
4863 }
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4864 h += len + txn->hdr_idx.v[cur_idx].cr + 1;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4865 }
4866
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4867 if (txn->auth_hdr.len < 21 ||
4868 memcmp(txn->auth_hdr.str + 14, " Basic ", 7))
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4869 user = NULL;
4870
4871 while (user) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4872 if ((txn->auth_hdr.len == user->user_len + 14 + 7)
4873 && !memcmp(txn->auth_hdr.str + 14 + 7,
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4874 user->user_pwd, user->user_len)) {
4875 authenticated = 1;
4876 break;
4877 }
4878 user = user->next;
4879 }
4880 }
4881
4882 if (!authenticated) {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4883 struct chunk msg;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4884
4885 /* no need to go further */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4886 msg.str = trash;
4887 msg.len = sprintf(trash, HTTP_401_fmt, uri_auth->auth_realm);
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4888 txn->status = 401;
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4889 client_retnclose(t, &msg);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4890 if (!(t->flags & SN_ERR_MASK))
4891 t->flags |= SN_ERR_PRXCOND;
4892 if (!(t->flags & SN_FINST_MASK))
4893 t->flags |= SN_FINST_R;
4894 return 1;
4895 }
4896
4897 /* The request is valid, the user is authenticate. Let's start sending
4898 * data.
4899 */
4900 t->cli_state = CL_STSHUTR;
4901 t->req->rlim = t->req->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]4902 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4903 t->data_source = DATA_SRC_STATS;
4904 t->data_state = DATA_ST_INIT;
4905 produce_content(t);
4906 return 1;
4907}
4908
4909
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4910/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4911 * Print a debug line with a header
4912 */
4913void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
4914{
4915 int len, max;
4916 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
4917 dir, (unsigned short)t->cli_fd, (unsigned short)t->srv_fd);
4918 max = end - start;
4919 UBOUND(max, sizeof(trash) - len - 1);
4920 len += strlcpy2(trash + len, start, max + 1);
4921 trash[len++] = '\n';
4922 write(1, trash, len);
4923}
4924
4925
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4926/************************************************************************/
4927/* The code below is dedicated to ACL parsing and matching */
4928/************************************************************************/
4929
4930
4931
4932
4933/* 1. Check on METHOD
4934 * We use the pre-parsed method if it is known, and store its number as an
4935 * integer. If it is unknown, we use the pointer and the length.
4936 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4937static int acl_parse_meth(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4938{
4939 int len, meth;
4940
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4941 len = strlen(*text);
4942 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4943
4944 pattern->val.i = meth;
4945 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4946 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4947 if (!pattern->ptr.str)
4948 return 0;
4949 pattern->len = len;
4950 }
4951 return 1;
4952}
4953
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4954static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4955acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, int dir,
4956 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4957{
4958 int meth;
4959 struct http_txn *txn = l7;
4960
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4961 if (txn->req.msg_state != HTTP_MSG_BODY)
4962 return 0;
4963
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4964 meth = txn->meth;
4965 test->i = meth;
4966 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4967 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4968 /* ensure the indexes are not affected */
4969 return 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4970 test->len = txn->req.sl.rq.m_l;
4971 test->ptr = txn->req.sol;
4972 }
4973 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4974 return 1;
4975}
4976
4977static int acl_match_meth(struct acl_test *test, struct acl_pattern *pattern)
4978{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4979 int icase;
4980
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4981 if (test->i != pattern->val.i)
4982 return 0;
4983
4984 if (test->i != HTTP_METH_OTHER)
4985 return 1;
4986
4987 /* Other method, we must compare the strings */
4988 if (pattern->len != test->len)
4989 return 0;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4990
4991 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
4992 if ((icase && strncasecmp(pattern->ptr.str, test->ptr, test->len) != 0) ||
4993 (!icase && strncmp(pattern->ptr.str, test->ptr, test->len) != 0))
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4994 return 0;
4995 return 1;
4996}
4997
4998/* 2. Check on Request/Status Version
4999 * We simply compare strings here.
5000 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5001static int acl_parse_ver(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5002{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5003 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5004 if (!pattern->ptr.str)
5005 return 0;
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5006 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5007 return 1;
5008}
5009
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5010static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5011acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, int dir,
5012 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5013{
5014 struct http_txn *txn = l7;
5015 char *ptr;
5016 int len;
5017
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5018 if (txn->req.msg_state != HTTP_MSG_BODY)
5019 return 0;
5020
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5021 len = txn->req.sl.rq.v_l;
5022 ptr = txn->req.sol + txn->req.sl.rq.v - txn->req.som;
5023
5024 while ((len-- > 0) && (*ptr++ != '/'));
5025 if (len <= 0)
5026 return 0;
5027
5028 test->ptr = ptr;
5029 test->len = len;
5030
5031 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
5032 return 1;
5033}
5034
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5035static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5036acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, int dir,
5037 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5038{
5039 struct http_txn *txn = l7;
5040 char *ptr;
5041 int len;
5042
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5043 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5044 return 0;
5045
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5046 len = txn->rsp.sl.st.v_l;
5047 ptr = txn->rsp.sol;
5048
5049 while ((len-- > 0) && (*ptr++ != '/'));
5050 if (len <= 0)
5051 return 0;
5052
5053 test->ptr = ptr;
5054 test->len = len;
5055
5056 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
5057 return 1;
5058}
5059
5060/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5061static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5062acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, int dir,
5063 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5064{
5065 struct http_txn *txn = l7;
5066 char *ptr;
5067 int len;
5068
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5069 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5070 return 0;
5071
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5072 len = txn->rsp.sl.st.c_l;
5073 ptr = txn->rsp.sol + txn->rsp.sl.st.c - txn->rsp.som;
5074
5075 test->i = __strl2ui(ptr, len);
5076 test->flags = ACL_TEST_F_VOL_1ST;
5077 return 1;
5078}
5079
5080/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5081static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5082acl_fetch_url(struct proxy *px, struct session *l4, void *l7, int dir,
5083 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5084{
5085 struct http_txn *txn = l7;
5086
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5087 if (txn->req.msg_state != HTTP_MSG_BODY)
5088 return 0;
5089 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5090 /* ensure the indexes are not affected */
5091 return 0;
5092
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5093 test->len = txn->req.sl.rq.u_l;
5094 test->ptr = txn->req.sol + txn->req.sl.rq.u;
5095
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]5096 /* we do not need to set READ_ONLY because the data is in a buffer */
5097 test->flags = ACL_TEST_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5098 return 1;
5099}
5100
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5101static int
5102acl_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, int dir,
5103 struct acl_expr *expr, struct acl_test *test)
5104{
5105 struct http_txn *txn = l7;
5106
5107 if (txn->req.msg_state != HTTP_MSG_BODY)
5108 return 0;
5109 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5110 /* ensure the indexes are not affected */
5111 return 0;
5112
5113 /* Parse HTTP request */
5114 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
5115 test->ptr = (void *)&((struct sockaddr_in *)&l4->srv_addr)->sin_addr;
5116 test->i = AF_INET;
5117
5118 /*
5119 * If we are parsing url in frontend space, we prepare backend stage
5120 * to not parse again the same url ! optimization lazyness...
5121 */
5122 if (px->options & PR_O_HTTP_PROXY)
5123 l4->flags |= SN_ADDR_SET;
5124
5125 test->flags = ACL_TEST_F_READ_ONLY;
5126 return 1;
5127}
5128
5129static int
5130acl_fetch_url_port(struct proxy *px, struct session *l4, void *l7, int dir,
5131 struct acl_expr *expr, struct acl_test *test)
5132{
5133 struct http_txn *txn = l7;
5134
5135 if (txn->req.msg_state != HTTP_MSG_BODY)
5136 return 0;
5137 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5138 /* ensure the indexes are not affected */
5139 return 0;
5140
5141 /* Same optimization as url_ip */
5142 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
5143 test->i = ntohs(((struct sockaddr_in *)&l4->srv_addr)->sin_port);
5144
5145 if (px->options & PR_O_HTTP_PROXY)
5146 l4->flags |= SN_ADDR_SET;
5147
5148 test->flags = ACL_TEST_F_READ_ONLY;
5149 return 1;
5150}
5151
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5152/* 5. Check on HTTP header. A pointer to the beginning of the value is returned.
5153 * This generic function is used by both acl_fetch_chdr() and acl_fetch_shdr().
5154 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5155static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5156acl_fetch_hdr(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5157 struct acl_expr *expr, struct acl_test *test)
5158{
5159 struct http_txn *txn = l7;
5160 struct hdr_idx *idx = &txn->hdr_idx;
5161 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5162
5163 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5164 /* search for header from the beginning */
5165 ctx->idx = 0;
5166
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5167 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5168 test->flags |= ACL_TEST_F_FETCH_MORE;
5169 test->flags |= ACL_TEST_F_VOL_HDR;
5170 test->len = ctx->vlen;
5171 test->ptr = (char *)ctx->line + ctx->val;
5172 return 1;
5173 }
5174
5175 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5176 test->flags |= ACL_TEST_F_VOL_HDR;
5177 return 0;
5178}
5179
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5180static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5181acl_fetch_chdr(struct proxy *px, struct session *l4, void *l7, int dir,
5182 struct acl_expr *expr, struct acl_test *test)
5183{
5184 struct http_txn *txn = l7;
5185
5186 if (txn->req.msg_state != HTTP_MSG_BODY)
5187 return 0;
5188 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5189 /* ensure the indexes are not affected */
5190 return 0;
5191
5192 return acl_fetch_hdr(px, l4, txn, txn->req.sol, expr, test);
5193}
5194
5195static int
5196acl_fetch_shdr(struct proxy *px, struct session *l4, void *l7, int dir,
5197 struct acl_expr *expr, struct acl_test *test)
5198{
5199 struct http_txn *txn = l7;
5200
5201 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5202 return 0;
5203
5204 return acl_fetch_hdr(px, l4, txn, txn->rsp.sol, expr, test);
5205}
5206
5207/* 6. Check on HTTP header count. The number of occurrences is returned.
5208 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
5209 */
5210static int
5211acl_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5212 struct acl_expr *expr, struct acl_test *test)
5213{
5214 struct http_txn *txn = l7;
5215 struct hdr_idx *idx = &txn->hdr_idx;
5216 struct hdr_ctx ctx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5217 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5218
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5219 ctx.idx = 0;
5220 cnt = 0;
5221 while (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, &ctx))
5222 cnt++;
5223
5224 test->i = cnt;
5225 test->flags = ACL_TEST_F_VOL_HDR;
5226 return 1;
5227}
5228
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5229static int
5230acl_fetch_chdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5231 struct acl_expr *expr, struct acl_test *test)
5232{
5233 struct http_txn *txn = l7;
5234
5235 if (txn->req.msg_state != HTTP_MSG_BODY)
5236 return 0;
5237 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5238 /* ensure the indexes are not affected */
5239 return 0;
5240
5241 return acl_fetch_hdr_cnt(px, l4, txn, txn->req.sol, expr, test);
5242}
5243
5244static int
5245acl_fetch_shdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5246 struct acl_expr *expr, struct acl_test *test)
5247{
5248 struct http_txn *txn = l7;
5249
5250 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5251 return 0;
5252
5253 return acl_fetch_hdr_cnt(px, l4, txn, txn->rsp.sol, expr, test);
5254}
5255
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5256/* 7. Check on HTTP header's integer value. The integer value is returned.
5257 * FIXME: the type is 'int', it may not be appropriate for everything.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5258 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5259 */
5260static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5261acl_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5262 struct acl_expr *expr, struct acl_test *test)
5263{
5264 struct http_txn *txn = l7;
5265 struct hdr_idx *idx = &txn->hdr_idx;
5266 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5267
5268 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5269 /* search for header from the beginning */
5270 ctx->idx = 0;
5271
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5272 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5273 test->flags |= ACL_TEST_F_FETCH_MORE;
5274 test->flags |= ACL_TEST_F_VOL_HDR;
5275 test->i = strl2ic((char *)ctx->line + ctx->val, ctx->vlen);
5276 return 1;
5277 }
5278
5279 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5280 test->flags |= ACL_TEST_F_VOL_HDR;
5281 return 0;
5282}
5283
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5284static int
5285acl_fetch_chdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5286 struct acl_expr *expr, struct acl_test *test)
5287{
5288 struct http_txn *txn = l7;
5289
5290 if (txn->req.msg_state != HTTP_MSG_BODY)
5291 return 0;
5292 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5293 /* ensure the indexes are not affected */
5294 return 0;
5295
5296 return acl_fetch_hdr_val(px, l4, txn, txn->req.sol, expr, test);
5297}
5298
5299static int
5300acl_fetch_shdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5301 struct acl_expr *expr, struct acl_test *test)
5302{
5303 struct http_txn *txn = l7;
5304
5305 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5306 return 0;
5307
5308 return acl_fetch_hdr_val(px, l4, txn, txn->rsp.sol, expr, test);
5309}
5310
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5311/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
5312 * the first '/' after the possible hostname, and ends before the possible '?'.
5313 */
5314static int
5315acl_fetch_path(struct proxy *px, struct session *l4, void *l7, int dir,
5316 struct acl_expr *expr, struct acl_test *test)
5317{
5318 struct http_txn *txn = l7;
5319 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5320
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5321 if (txn->req.msg_state != HTTP_MSG_BODY)
5322 return 0;
5323 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5324 /* ensure the indexes are not affected */
5325 return 0;
5326
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5327 end = txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
5328 ptr = http_get_path(txn);
5329 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5330 return 0;
5331
5332 /* OK, we got the '/' ! */
5333 test->ptr = ptr;
5334
5335 while (ptr < end && *ptr != '?')
5336 ptr++;
5337
5338 test->len = ptr - test->ptr;
5339
5340 /* we do not need to set READ_ONLY because the data is in a buffer */
5341 test->flags = ACL_TEST_F_VOL_1ST;
5342 return 1;
5343}
5344
5345
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5346
5347/************************************************************************/
5348/* All supported keywords must be declared here. */
5349/************************************************************************/
5350
5351/* Note: must not be declared <const> as its list will be overwritten */
5352static struct acl_kw_list acl_kws = {{ },{
5353 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth },
5354 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str },
5355 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str },
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5356 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5357
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5358 { "url", acl_parse_str, acl_fetch_url, acl_match_str },
5359 { "url_beg", acl_parse_str, acl_fetch_url, acl_match_beg },
5360 { "url_end", acl_parse_str, acl_fetch_url, acl_match_end },
5361 { "url_sub", acl_parse_str, acl_fetch_url, acl_match_sub },
5362 { "url_dir", acl_parse_str, acl_fetch_url, acl_match_dir },
5363 { "url_dom", acl_parse_str, acl_fetch_url, acl_match_dom },
5364 { "url_reg", acl_parse_reg, acl_fetch_url, acl_match_reg },
5365 { "url_ip", acl_parse_ip, acl_fetch_url_ip, acl_match_ip },
5366 { "url_port", acl_parse_int, acl_fetch_url_port, acl_match_int },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5367
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5368 { "hdr", acl_parse_str, acl_fetch_chdr, acl_match_str },
5369 { "hdr_reg", acl_parse_reg, acl_fetch_chdr, acl_match_reg },
5370 { "hdr_beg", acl_parse_str, acl_fetch_chdr, acl_match_beg },
5371 { "hdr_end", acl_parse_str, acl_fetch_chdr, acl_match_end },
5372 { "hdr_sub", acl_parse_str, acl_fetch_chdr, acl_match_sub },
5373 { "hdr_dir", acl_parse_str, acl_fetch_chdr, acl_match_dir },
5374 { "hdr_dom", acl_parse_str, acl_fetch_chdr, acl_match_dom },
5375 { "hdr_cnt", acl_parse_int, acl_fetch_chdr_cnt,acl_match_int },
5376 { "hdr_val", acl_parse_int, acl_fetch_chdr_val,acl_match_int },
5377
5378 { "shdr", acl_parse_str, acl_fetch_shdr, acl_match_str },
5379 { "shdr_reg", acl_parse_reg, acl_fetch_shdr, acl_match_reg },
5380 { "shdr_beg", acl_parse_str, acl_fetch_shdr, acl_match_beg },
5381 { "shdr_end", acl_parse_str, acl_fetch_shdr, acl_match_end },
5382 { "shdr_sub", acl_parse_str, acl_fetch_shdr, acl_match_sub },
5383 { "shdr_dir", acl_parse_str, acl_fetch_shdr, acl_match_dir },
5384 { "shdr_dom", acl_parse_str, acl_fetch_shdr, acl_match_dom },
5385 { "shdr_cnt", acl_parse_int, acl_fetch_shdr_cnt,acl_match_int },
5386 { "shdr_val", acl_parse_int, acl_fetch_shdr_val,acl_match_int },
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5387
5388 { "path", acl_parse_str, acl_fetch_path, acl_match_str },
5389 { "path_reg", acl_parse_reg, acl_fetch_path, acl_match_reg },
5390 { "path_beg", acl_parse_str, acl_fetch_path, acl_match_beg },
5391 { "path_end", acl_parse_str, acl_fetch_path, acl_match_end },
5392 { "path_sub", acl_parse_str, acl_fetch_path, acl_match_sub },
5393 { "path_dir", acl_parse_str, acl_fetch_path, acl_match_dir },
5394 { "path_dom", acl_parse_str, acl_fetch_path, acl_match_dom },
5395
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]5396 { NULL, NULL, NULL, NULL },
5397
5398#if 0
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5399 { "line", acl_parse_str, acl_fetch_line, acl_match_str },
5400 { "line_reg", acl_parse_reg, acl_fetch_line, acl_match_reg },
5401 { "line_beg", acl_parse_str, acl_fetch_line, acl_match_beg },
5402 { "line_end", acl_parse_str, acl_fetch_line, acl_match_end },
5403 { "line_sub", acl_parse_str, acl_fetch_line, acl_match_sub },
5404 { "line_dir", acl_parse_str, acl_fetch_line, acl_match_dir },
5405 { "line_dom", acl_parse_str, acl_fetch_line, acl_match_dom },
5406
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5407 { "cook", acl_parse_str, acl_fetch_cook, acl_match_str },
5408 { "cook_reg", acl_parse_reg, acl_fetch_cook, acl_match_reg },
5409 { "cook_beg", acl_parse_str, acl_fetch_cook, acl_match_beg },
5410 { "cook_end", acl_parse_str, acl_fetch_cook, acl_match_end },
5411 { "cook_sub", acl_parse_str, acl_fetch_cook, acl_match_sub },
5412 { "cook_dir", acl_parse_str, acl_fetch_cook, acl_match_dir },
5413 { "cook_dom", acl_parse_str, acl_fetch_cook, acl_match_dom },
5414 { "cook_pst", acl_parse_none, acl_fetch_cook, acl_match_pst },
5415
5416 { "auth_user", acl_parse_str, acl_fetch_user, acl_match_str },
5417 { "auth_regex", acl_parse_reg, acl_fetch_user, acl_match_reg },
5418 { "auth_clear", acl_parse_str, acl_fetch_auth, acl_match_str },
5419 { "auth_md5", acl_parse_str, acl_fetch_auth, acl_match_md5 },
5420 { NULL, NULL, NULL, NULL },
5421#endif
5422}};
5423
5424
5425__attribute__((constructor))
5426static void __http_protocol_init(void)
5427{
5428 acl_register_keywords(&acl_kws);
5429}
5430
5431
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5432/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5433 * Local variables:
5434 * c-indent-level: 8
5435 * c-basic-offset: 8
5436 * End:
5437 */