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git01.mediatek.com / haproxy / 0ebe106ef1337a62b226a954d95225f0432c7963 / . / src / proto_http.c
blob: 59b9055f66820c8b94a755fc1693029f309d1f5a [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4 * Copyright 2000-2007 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <ctype.h>
14#include <errno.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <syslog.h>
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]20#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]21
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]26#include <common/appsession.h>
27#include <common/compat.h>
28#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]29#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]30#include <common/memory.h>
31#include <common/mini-clist.h>
32#include <common/standard.h>
33#include <common/time.h>
34#include <common/uri_auth.h>
35#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]36
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]37#include <types/acl.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]38#include <types/capture.h>
39#include <types/client.h>
40#include <types/global.h>
41#include <types/httperr.h>
42#include <types/polling.h>
43#include <types/proxy.h>
44#include <types/server.h>
45
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]46#include <proto/acl.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]47#include <proto/backend.h>
48#include <proto/buffers.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]49#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]50#include <proto/fd.h>
51#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]52#include <proto/hdr_idx.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]53#include <proto/proto_http.h>
54#include <proto/queue.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]55#include <proto/senddata.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]56#include <proto/session.h>
57#include <proto/task.h>
58
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]59#ifdef CONFIG_HAP_TCPSPLICE
60#include <libtcpsplice.h>
61#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]62
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]63#define DEBUG_PARSE_NO_SPEEDUP
64#undef DEBUG_PARSE_NO_SPEEDUP
65
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]66/* This is used to perform a quick jump as an alternative to a break/continue
67 * instruction. The first argument is the label for normal operation, and the
68 * second one is the break/continue instruction in the no_speedup mode.
69 */
70
71#ifdef DEBUG_PARSE_NO_SPEEDUP
72#define QUICK_JUMP(x,y) y
73#else
74#define QUICK_JUMP(x,y) goto x
75#endif
76
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]77/* This is used by remote monitoring */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]78const char HTTP_200[] =
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]79 "HTTP/1.0 200 OK\r\n"
80 "Cache-Control: no-cache\r\n"
81 "Connection: close\r\n"
82 "Content-Type: text/html\r\n"
83 "\r\n"
84 "<html><body><h1>200 OK</h1>\nHAProxy: service ready.\n</body></html>\n";
85
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]86const struct chunk http_200_chunk = {
87 .str = (char *)&HTTP_200,
88 .len = sizeof(HTTP_200)-1
89};
90
91const char *HTTP_302 =
92 "HTTP/1.0 302 Found\r\n"
93 "Cache-Control: no-cache\r\n"
94 "Connection: close\r\n"
95 "Location: "; /* not terminated since it will be concatenated with the URL */
96
97/* same as 302 except that the browser MUST retry with the GET method */
98const char *HTTP_303 =
99 "HTTP/1.0 303 See Other\r\n"
100 "Cache-Control: no-cache\r\n"
101 "Connection: close\r\n"
102 "Location: "; /* not terminated since it will be concatenated with the URL */
103
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]104/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
105const char *HTTP_401_fmt =
106 "HTTP/1.0 401 Unauthorized\r\n"
107 "Cache-Control: no-cache\r\n"
108 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]109 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]110 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
111 "\r\n"
112 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
113
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]114
115const int http_err_codes[HTTP_ERR_SIZE] = {
116 [HTTP_ERR_400] = 400,
117 [HTTP_ERR_403] = 403,
118 [HTTP_ERR_408] = 408,
119 [HTTP_ERR_500] = 500,
120 [HTTP_ERR_502] = 502,
121 [HTTP_ERR_503] = 503,
122 [HTTP_ERR_504] = 504,
123};
124
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]125static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]126 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]127 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]128 "Cache-Control: no-cache\r\n"
129 "Connection: close\r\n"
130 "Content-Type: text/html\r\n"
131 "\r\n"
132 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
133
134 [HTTP_ERR_403] =
135 "HTTP/1.0 403 Forbidden\r\n"
136 "Cache-Control: no-cache\r\n"
137 "Connection: close\r\n"
138 "Content-Type: text/html\r\n"
139 "\r\n"
140 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
141
142 [HTTP_ERR_408] =
143 "HTTP/1.0 408 Request Time-out\r\n"
144 "Cache-Control: no-cache\r\n"
145 "Connection: close\r\n"
146 "Content-Type: text/html\r\n"
147 "\r\n"
148 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
149
150 [HTTP_ERR_500] =
151 "HTTP/1.0 500 Server Error\r\n"
152 "Cache-Control: no-cache\r\n"
153 "Connection: close\r\n"
154 "Content-Type: text/html\r\n"
155 "\r\n"
156 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
157
158 [HTTP_ERR_502] =
159 "HTTP/1.0 502 Bad Gateway\r\n"
160 "Cache-Control: no-cache\r\n"
161 "Connection: close\r\n"
162 "Content-Type: text/html\r\n"
163 "\r\n"
164 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
165
166 [HTTP_ERR_503] =
167 "HTTP/1.0 503 Service Unavailable\r\n"
168 "Cache-Control: no-cache\r\n"
169 "Connection: close\r\n"
170 "Content-Type: text/html\r\n"
171 "\r\n"
172 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
173
174 [HTTP_ERR_504] =
175 "HTTP/1.0 504 Gateway Time-out\r\n"
176 "Cache-Control: no-cache\r\n"
177 "Connection: close\r\n"
178 "Content-Type: text/html\r\n"
179 "\r\n"
180 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
181
182};
183
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]184/* We must put the messages here since GCC cannot initialize consts depending
185 * on strlen().
186 */
187struct chunk http_err_chunks[HTTP_ERR_SIZE];
188
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]189#define FD_SETS_ARE_BITFIELDS
190#ifdef FD_SETS_ARE_BITFIELDS
191/*
192 * This map is used with all the FD_* macros to check whether a particular bit
193 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
194 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
195 * byte should be encoded. Be careful to always pass bytes from 0 to 255
196 * exclusively to the macros.
197 */
198fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
199fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
200
201#else
202#error "Check if your OS uses bitfields for fd_sets"
203#endif
204
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]205void init_proto_http()
206{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]207 int i;
208 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]209 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]210
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]211 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
212 if (!http_err_msgs[msg]) {
213 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
214 abort();
215 }
216
217 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
218 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
219 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]220
221 /* initialize the log header encoding map : '{|}"#' should be encoded with
222 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
223 * URL encoding only requires '"', '#' to be encoded as well as non-
224 * printable characters above.
225 */
226 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
227 memset(url_encode_map, 0, sizeof(url_encode_map));
228 for (i = 0; i < 32; i++) {
229 FD_SET(i, hdr_encode_map);
230 FD_SET(i, url_encode_map);
231 }
232 for (i = 127; i < 256; i++) {
233 FD_SET(i, hdr_encode_map);
234 FD_SET(i, url_encode_map);
235 }
236
237 tmp = "\"#{|}";
238 while (*tmp) {
239 FD_SET(*tmp, hdr_encode_map);
240 tmp++;
241 }
242
243 tmp = "\"#";
244 while (*tmp) {
245 FD_SET(*tmp, url_encode_map);
246 tmp++;
247 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]248
249 /* memory allocations */
250 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]251 pool2_capture = create_pool("capture", CAPTURE_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]252}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]253
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]254/*
255 * We have 26 list of methods (1 per first letter), each of which can have
256 * up to 3 entries (2 valid, 1 null).
257 */
258struct http_method_desc {
259 http_meth_t meth;
260 int len;
261 const char text[8];
262};
263
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]264const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]265 ['C' - 'A'] = {
266 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
267 },
268 ['D' - 'A'] = {
269 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
270 },
271 ['G' - 'A'] = {
272 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
273 },
274 ['H' - 'A'] = {
275 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
276 },
277 ['P' - 'A'] = {
278 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
279 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
280 },
281 ['T' - 'A'] = {
282 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
283 },
284 /* rest is empty like this :
285 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
286 */
287};
288
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]289/* It is about twice as fast on recent architectures to lookup a byte in a
290 * table than two perform a boolean AND or OR between two tests. Refer to
291 * RFC2616 for those chars.
292 */
293
294const char http_is_spht[256] = {
295 [' '] = 1, ['\t'] = 1,
296};
297
298const char http_is_crlf[256] = {
299 ['\r'] = 1, ['\n'] = 1,
300};
301
302const char http_is_lws[256] = {
303 [' '] = 1, ['\t'] = 1,
304 ['\r'] = 1, ['\n'] = 1,
305};
306
307const char http_is_sep[256] = {
308 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
309 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
310 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
311 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
312 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
313};
314
315const char http_is_ctl[256] = {
316 [0 ... 31] = 1,
317 [127] = 1,
318};
319
320/*
321 * A token is any ASCII char that is neither a separator nor a CTL char.
322 * Do not overwrite values in assignment since gcc-2.95 will not handle
323 * them correctly. Instead, define every non-CTL char's status.
324 */
325const char http_is_token[256] = {
326 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
327 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
328 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
329 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
330 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
331 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
332 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
333 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
334 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
335 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
336 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
337 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
338 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
339 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
340 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
341 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
342 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
343 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
344 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
345 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
346 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
347 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
348 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
349 ['|'] = 1, ['}'] = 0, ['~'] = 1,
350};
351
352
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]353/*
354 * An http ver_token is any ASCII which can be found in an HTTP version,
355 * which includes 'H', 'T', 'P', '/', '.' and any digit.
356 */
357const char http_is_ver_token[256] = {
358 ['.'] = 1, ['/'] = 1,
359 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
360 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
361 ['H'] = 1, ['P'] = 1, ['T'] = 1,
362};
363
364
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]365#ifdef DEBUG_FULL
366static char *cli_stnames[5] = {"HDR", "DAT", "SHR", "SHW", "CLS" };
367static char *srv_stnames[7] = {"IDL", "CON", "HDR", "DAT", "SHR", "SHW", "CLS" };
368#endif
369
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]370static void http_sess_log(struct session *s);
371
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]372/*
373 * Adds a header and its CRLF at the tail of buffer <b>, just before the last
374 * CRLF. Text length is measured first, so it cannot be NULL.
375 * The header is also automatically added to the index <hdr_idx>, and the end
376 * of headers is automatically adjusted. The number of bytes added is returned
377 * on success, otherwise <0 is returned indicating an error.
378 */
379int http_header_add_tail(struct buffer *b, struct http_msg *msg,
380 struct hdr_idx *hdr_idx, const char *text)
381{
382 int bytes, len;
383
384 len = strlen(text);
385 bytes = buffer_insert_line2(b, b->data + msg->eoh, text, len);
386 if (!bytes)
387 return -1;
388 msg->eoh += bytes;
389 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
390}
391
392/*
393 * Adds a header and its CRLF at the tail of buffer <b>, just before the last
394 * CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
395 * the buffer is only opened and the space reserved, but nothing is copied.
396 * The header is also automatically added to the index <hdr_idx>, and the end
397 * of headers is automatically adjusted. The number of bytes added is returned
398 * on success, otherwise <0 is returned indicating an error.
399 */
400int http_header_add_tail2(struct buffer *b, struct http_msg *msg,
401 struct hdr_idx *hdr_idx, const char *text, int len)
402{
403 int bytes;
404
405 bytes = buffer_insert_line2(b, b->data + msg->eoh, text, len);
406 if (!bytes)
407 return -1;
408 msg->eoh += bytes;
409 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
410}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]411
412/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]413 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
414 * If so, returns the position of the first non-space character relative to
415 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
416 * to return a pointer to the place after the first space. Returns 0 if the
417 * header name does not match. Checks are case-insensitive.
418 */
419int http_header_match2(const char *hdr, const char *end,
420 const char *name, int len)
421{
422 const char *val;
423
424 if (hdr + len >= end)
425 return 0;
426 if (hdr[len] != ':')
427 return 0;
428 if (strncasecmp(hdr, name, len) != 0)
429 return 0;
430 val = hdr + len + 1;
431 while (val < end && HTTP_IS_SPHT(*val))
432 val++;
433 if ((val >= end) && (len + 2 <= end - hdr))
434 return len + 2; /* we may replace starting from second space */
435 return val - hdr;
436}
437
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]438/* Find the end of the header value contained between <s> and <e>.
439 * See RFC2616, par 2.2 for more information. Note that it requires
440 * a valid header to return a valid result.
441 */
442const char *find_hdr_value_end(const char *s, const char *e)
443{
444 int quoted, qdpair;
445
446 quoted = qdpair = 0;
447 for (; s < e; s++) {
448 if (qdpair) qdpair = 0;
449 else if (quoted && *s == '\\') qdpair = 1;
450 else if (quoted && *s == '"') quoted = 0;
451 else if (*s == '"') quoted = 1;
452 else if (*s == ',') return s;
453 }
454 return s;
455}
456
457/* Find the first or next occurrence of header <name> in message buffer <sol>
458 * using headers index <idx>, and return it in the <ctx> structure. This
459 * structure holds everything necessary to use the header and find next
460 * occurrence. If its <idx> member is 0, the header is searched from the
461 * beginning. Otherwise, the next occurrence is returned. The function returns
462 * 1 when it finds a value, and 0 when there is no more.
463 */
464int http_find_header2(const char *name, int len,
465 const char *sol, struct hdr_idx *idx,
466 struct hdr_ctx *ctx)
467{
468 __label__ return_hdr, next_hdr;
469 const char *eol, *sov;
470 int cur_idx;
471
472 if (ctx->idx) {
473 /* We have previously returned a value, let's search
474 * another one on the same line.
475 */
476 cur_idx = ctx->idx;
477 sol = ctx->line;
478 sov = sol + ctx->val + ctx->vlen;
479 eol = sol + idx->v[cur_idx].len;
480
481 if (sov >= eol)
482 /* no more values in this header */
483 goto next_hdr;
484
485 /* values remaining for this header, skip the comma */
486 sov++;
487 while (sov < eol && http_is_lws[(unsigned char)*sov])
488 sov++;
489
490 goto return_hdr;
491 }
492
493 /* first request for this header */
494 sol += hdr_idx_first_pos(idx);
495 cur_idx = hdr_idx_first_idx(idx);
496
497 while (cur_idx) {
498 eol = sol + idx->v[cur_idx].len;
499
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]500 if (len == 0) {
501 /* No argument was passed, we want any header.
502 * To achieve this, we simply build a fake request. */
503 while (sol + len < eol && sol[len] != ':')
504 len++;
505 name = sol;
506 }
507
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]508 if ((len < eol - sol) &&
509 (sol[len] == ':') &&
510 (strncasecmp(sol, name, len) == 0)) {
511
512 sov = sol + len + 1;
513 while (sov < eol && http_is_lws[(unsigned char)*sov])
514 sov++;
515 return_hdr:
516 ctx->line = sol;
517 ctx->idx = cur_idx;
518 ctx->val = sov - sol;
519
520 eol = find_hdr_value_end(sov, eol);
521 ctx->vlen = eol - sov;
522 return 1;
523 }
524 next_hdr:
525 sol = eol + idx->v[cur_idx].cr + 1;
526 cur_idx = idx->v[cur_idx].next;
527 }
528 return 0;
529}
530
531int http_find_header(const char *name,
532 const char *sol, struct hdr_idx *idx,
533 struct hdr_ctx *ctx)
534{
535 return http_find_header2(name, strlen(name), sol, idx, ctx);
536}
537
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]538/* This function turns the server state into the SV_STCLOSE, and sets
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]539 * indicators accordingly. Note that if <status> is 0, or if the message
540 * pointer is NULL, then no message is returned.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]541 */
542void srv_close_with_err(struct session *t, int err, int finst,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]543 int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]544{
545 t->srv_state = SV_STCLOSE;
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]546 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]547 t->txn.status = status;
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]548 if (t->fe->mode == PR_MODE_HTTP)
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]549 client_return(t, msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]550 }
551 if (!(t->flags & SN_ERR_MASK))
552 t->flags |= err;
553 if (!(t->flags & SN_FINST_MASK))
554 t->flags |= finst;
555}
556
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]557/* This function returns the appropriate error location for the given session
558 * and message.
559 */
560
561struct chunk *error_message(struct session *s, int msgnum)
562{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]563 if (s->be->errmsg[msgnum].str)
564 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]565 else if (s->fe->errmsg[msgnum].str)
566 return &s->fe->errmsg[msgnum];
567 else
568 return &http_err_chunks[msgnum];
569}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]570
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]571/*
572 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
573 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
574 */
575static http_meth_t find_http_meth(const char *str, const int len)
576{
577 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]578 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]579
580 m = ((unsigned)*str - 'A');
581
582 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]583 for (h = http_methods[m]; h->len > 0; h++) {
584 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]585 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]586 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]587 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]588 };
589 return HTTP_METH_OTHER;
590 }
591 return HTTP_METH_NONE;
592
593}
594
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]595/* Processes the client and server jobs of a session task, then
596 * puts it back to the wait queue in a clean state, or
597 * cleans up its resources if it must be deleted. Returns
598 * the time the task accepts to wait, or TIME_ETERNITY for
599 * infinity.
600 */
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]601void process_session(struct task *t, struct timeval *next)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]602{
603 struct session *s = t->context;
604 int fsm_resync = 0;
605
606 do {
607 fsm_resync = 0;
608 //fprintf(stderr,"before_cli:cli=%d, srv=%d\n", s->cli_state, s->srv_state);
609 fsm_resync |= process_cli(s);
610 //fprintf(stderr,"cli/srv:cli=%d, srv=%d\n", s->cli_state, s->srv_state);
611 fsm_resync |= process_srv(s);
612 //fprintf(stderr,"after_srv:cli=%d, srv=%d\n", s->cli_state, s->srv_state);
613 } while (fsm_resync);
614
Willy Tarreauf41d4b12007-04-28 23:26:14 +0200[diff] [blame]615 if (likely(s->cli_state != CL_STCLOSE || s->srv_state != SV_STCLOSE)) {
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100[diff] [blame]616
617 if ((s->fe->options & PR_O_CONTSTATS) && (s->flags & SN_BE_ASSIGNED))
618 session_process_counters(s);
619
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]620 s->req->flags &= BF_CLEAR_READ & BF_CLEAR_WRITE;
621 s->rep->flags &= BF_CLEAR_READ & BF_CLEAR_WRITE;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]622
Willy Tarreaua6a6a932007-04-28 22:40:08 +0200[diff] [blame]623 t->expire = s->req->rex;
624 tv_min(&t->expire, &s->req->rex, &s->req->wex);
625 tv_bound(&t->expire, &s->req->cex);
626 tv_bound(&t->expire, &s->rep->rex);
627 tv_bound(&t->expire, &s->rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]628
629 /* restore t to its place in the task list */
630 task_queue(t);
631
632#ifdef DEBUG_FULL
633 /* DEBUG code : this should never ever happen, otherwise it indicates
634 * that a task still has something to do and will provoke a quick loop.
635 */
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]636 if (tv_remain2(&now, &t->expire) <= 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]637 exit(100);
638#endif
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]639 *next = t->expire;
640 return; /* nothing more to do */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]641 }
642
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]643 s->fe->feconn--;
644 if (s->flags & SN_BE_ASSIGNED)
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]645 s->be->beconn--;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]646 actconn--;
647
Willy Tarreauf41d4b12007-04-28 23:26:14 +0200[diff] [blame]648 if (unlikely((global.mode & MODE_DEBUG) &&
649 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]650 int len;
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]651 len = sprintf(trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]652 s->uniq_id, s->be->id,
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]653 (unsigned short)s->cli_fd, (unsigned short)s->srv_fd);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]654 write(1, trash, len);
655 }
656
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]657 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100[diff] [blame]658 session_process_counters(s);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]659
660 /* let's do a final log if we need it */
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]661 if (s->logs.logwait &&
662 !(s->flags & SN_MONITOR) &&
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]663 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
664 if (s->fe->to_log & LW_REQ)
665 http_sess_log(s);
666 else
667 tcp_sess_log(s);
668 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]669
670 /* the task MUST not be in the run queue anymore */
671 task_delete(t);
672 session_free(s);
673 task_free(t);
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]674 tv_eternity(next);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]675}
676
677
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]678extern const char sess_term_cond[8];
679extern const char sess_fin_state[8];
680extern const char *monthname[12];
681const char sess_cookie[4] = "NIDV"; /* No cookie, Invalid cookie, cookie for a Down server, Valid cookie */
682const char sess_set_cookie[8] = "N1I3PD5R"; /* No set-cookie, unknown, Set-Cookie Inserted, unknown,
683 Set-cookie seen and left unchanged (passive), Set-cookie Deleted,
684 unknown, Set-cookie Rewritten */
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]685struct pool_head *pool2_requri;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]686struct pool_head *pool2_capture;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]687
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]688/*
689 * send a log for the session when we have enough info about it.
690 * Will not log if the frontend has no log defined.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]691 */
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]692static void http_sess_log(struct session *s)
693{
694 char pn[INET6_ADDRSTRLEN + strlen(":65535")];
695 struct proxy *fe = s->fe;
696 struct proxy *be = s->be;
697 struct proxy *prx_log;
698 struct http_txn *txn = &s->txn;
699 int tolog;
700 char *uri, *h;
701 char *svid;
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]702 struct tm tm;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]703 static char tmpline[MAX_SYSLOG_LEN];
704 int hdr;
705
706 if (fe->logfac1 < 0 && fe->logfac2 < 0)
707 return;
708 prx_log = fe;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]709
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]710 if (s->cli_addr.ss_family == AF_INET)
711 inet_ntop(AF_INET,
712 (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
713 pn, sizeof(pn));
714 else
715 inet_ntop(AF_INET6,
716 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
717 pn, sizeof(pn));
718
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]719 get_localtime(s->logs.tv_accept.tv_sec, &tm);
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]720
721 /* FIXME: let's limit ourselves to frontend logging for now. */
722 tolog = fe->to_log;
723
724 h = tmpline;
725 if (fe->to_log & LW_REQHDR &&
726 txn->req.cap &&
727 (h < tmpline + sizeof(tmpline) - 10)) {
728 *(h++) = ' ';
729 *(h++) = '{';
730 for (hdr = 0; hdr < fe->nb_req_cap; hdr++) {
731 if (hdr)
732 *(h++) = '|';
733 if (txn->req.cap[hdr] != NULL)
734 h = encode_string(h, tmpline + sizeof(tmpline) - 7,
735 '#', hdr_encode_map, txn->req.cap[hdr]);
736 }
737 *(h++) = '}';
738 }
739
740 if (fe->to_log & LW_RSPHDR &&
741 txn->rsp.cap &&
742 (h < tmpline + sizeof(tmpline) - 7)) {
743 *(h++) = ' ';
744 *(h++) = '{';
745 for (hdr = 0; hdr < fe->nb_rsp_cap; hdr++) {
746 if (hdr)
747 *(h++) = '|';
748 if (txn->rsp.cap[hdr] != NULL)
749 h = encode_string(h, tmpline + sizeof(tmpline) - 4,
750 '#', hdr_encode_map, txn->rsp.cap[hdr]);
751 }
752 *(h++) = '}';
753 }
754
755 if (h < tmpline + sizeof(tmpline) - 4) {
756 *(h++) = ' ';
757 *(h++) = '"';
758 uri = txn->uri ? txn->uri : "<BADREQ>";
759 h = encode_string(h, tmpline + sizeof(tmpline) - 1,
760 '#', url_encode_map, uri);
761 *(h++) = '"';
762 }
763 *h = '\0';
764
765 svid = (tolog & LW_SVID) ?
766 (s->data_source != DATA_SRC_STATS) ?
767 (s->srv != NULL) ? s->srv->id : "<NOSRV>" : "<STATS>" : "-";
768
769 send_log(prx_log, LOG_INFO,
770 "%s:%d [%02d/%s/%04d:%02d:%02d:%02d.%03d]"
771 " %s %s/%s %d/%d/%d/%d/%s%d %d %s%lld"
772 " %s %s %c%c%c%c %d/%d/%d/%d %d/%d%s\n",
773 pn,
774 (s->cli_addr.ss_family == AF_INET) ?
775 ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port) :
776 ntohs(((struct sockaddr_in6 *)&s->cli_addr)->sin6_port),
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]777 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
778 tm.tm_hour, tm.tm_min, tm.tm_sec, s->logs.tv_accept.tv_usec/1000,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]779 fe->id, be->id, svid,
780 s->logs.t_request,
781 (s->logs.t_queue >= 0) ? s->logs.t_queue - s->logs.t_request : -1,
782 (s->logs.t_connect >= 0) ? s->logs.t_connect - s->logs.t_queue : -1,
783 (s->logs.t_data >= 0) ? s->logs.t_data - s->logs.t_connect : -1,
784 (tolog & LW_BYTES) ? "" : "+", s->logs.t_close,
785 txn->status,
786 (tolog & LW_BYTES) ? "" : "+", s->logs.bytes_in,
787 txn->cli_cookie ? txn->cli_cookie : "-",
788 txn->srv_cookie ? txn->srv_cookie : "-",
789 sess_term_cond[(s->flags & SN_ERR_MASK) >> SN_ERR_SHIFT],
790 sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_FINST_SHIFT],
791 (be->options & PR_O_COOK_ANY) ? sess_cookie[(txn->flags & TX_CK_MASK) >> TX_CK_SHIFT] : '-',
792 (be->options & PR_O_COOK_ANY) ? sess_set_cookie[(txn->flags & TX_SCK_MASK) >> TX_SCK_SHIFT] : '-',
793 actconn, fe->feconn, be->beconn, s->srv ? s->srv->cur_sess : 0,
794 s->logs.srv_queue_size, s->logs.prx_queue_size, tmpline);
795
796 s->logs.logwait = 0;
797}
798
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]799
800/*
801 * Capture headers from message starting at <som> according to header list
802 * <cap_hdr>, and fill the <idx> structure appropriately.
803 */
804void capture_headers(char *som, struct hdr_idx *idx,
805 char **cap, struct cap_hdr *cap_hdr)
806{
807 char *eol, *sol, *col, *sov;
808 int cur_idx;
809 struct cap_hdr *h;
810 int len;
811
812 sol = som + hdr_idx_first_pos(idx);
813 cur_idx = hdr_idx_first_idx(idx);
814
815 while (cur_idx) {
816 eol = sol + idx->v[cur_idx].len;
817
818 col = sol;
819 while (col < eol && *col != ':')
820 col++;
821
822 sov = col + 1;
823 while (sov < eol && http_is_lws[(unsigned char)*sov])
824 sov++;
825
826 for (h = cap_hdr; h; h = h->next) {
827 if ((h->namelen == col - sol) &&
828 (strncasecmp(sol, h->name, h->namelen) == 0)) {
829 if (cap[h->index] == NULL)
830 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]831 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]832
833 if (cap[h->index] == NULL) {
834 Alert("HTTP capture : out of memory.\n");
835 continue;
836 }
837
838 len = eol - sov;
839 if (len > h->len)
840 len = h->len;
841
842 memcpy(cap[h->index], sov, len);
843 cap[h->index][len]=0;
844 }
845 }
846 sol = eol + idx->v[cur_idx].cr + 1;
847 cur_idx = idx->v[cur_idx].next;
848 }
849}
850
851
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]852/* either we find an LF at <ptr> or we jump to <bad>.
853 */
854#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
855
856/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
857 * otherwise to <http_msg_ood> with <state> set to <st>.
858 */
859#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
860 ptr++; \
861 if (likely(ptr < end)) \
862 goto good; \
863 else { \
864 state = (st); \
865 goto http_msg_ood; \
866 } \
867 } while (0)
868
869
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]870/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]871 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]872 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
873 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
874 * will give undefined results.
875 * Note that it is upon the caller's responsibility to ensure that ptr < end,
876 * and that msg->sol points to the beginning of the response.
877 * If a complete line is found (which implies that at least one CR or LF is
878 * found before <end>, the updated <ptr> is returned, otherwise NULL is
879 * returned indicating an incomplete line (which does not mean that parts have
880 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
881 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
882 * upon next call.
883 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]884 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]885 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
886 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]887 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]888 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]889const char *http_parse_stsline(struct http_msg *msg, const char *msg_buf, int state,
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]890 const char *ptr, const char *end,
891 char **ret_ptr, int *ret_state)
892{
893 __label__
894 http_msg_rpver,
895 http_msg_rpver_sp,
896 http_msg_rpcode,
897 http_msg_rpcode_sp,
898 http_msg_rpreason,
899 http_msg_rpline_eol,
900 http_msg_ood, /* out of data */
901 http_msg_invalid;
902
903 switch (state) {
904 http_msg_rpver:
905 case HTTP_MSG_RPVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]906 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]907 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
908
909 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]910 msg->sl.st.v_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]911 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
912 }
913 goto http_msg_invalid;
914
915 http_msg_rpver_sp:
916 case HTTP_MSG_RPVER_SP:
917 if (likely(!HTTP_IS_LWS(*ptr))) {
918 msg->sl.st.c = ptr - msg_buf;
919 goto http_msg_rpcode;
920 }
921 if (likely(HTTP_IS_SPHT(*ptr)))
922 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
923 /* so it's a CR/LF, this is invalid */
924 goto http_msg_invalid;
925
926 http_msg_rpcode:
927 case HTTP_MSG_RPCODE:
928 if (likely(!HTTP_IS_LWS(*ptr)))
929 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
930
931 if (likely(HTTP_IS_SPHT(*ptr))) {
932 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
933 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
934 }
935
936 /* so it's a CR/LF, so there is no reason phrase */
937 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
938 http_msg_rsp_reason:
939 /* FIXME: should we support HTTP responses without any reason phrase ? */
940 msg->sl.st.r = ptr - msg_buf;
941 msg->sl.st.r_l = 0;
942 goto http_msg_rpline_eol;
943
944 http_msg_rpcode_sp:
945 case HTTP_MSG_RPCODE_SP:
946 if (likely(!HTTP_IS_LWS(*ptr))) {
947 msg->sl.st.r = ptr - msg_buf;
948 goto http_msg_rpreason;
949 }
950 if (likely(HTTP_IS_SPHT(*ptr)))
951 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
952 /* so it's a CR/LF, so there is no reason phrase */
953 goto http_msg_rsp_reason;
954
955 http_msg_rpreason:
956 case HTTP_MSG_RPREASON:
957 if (likely(!HTTP_IS_CRLF(*ptr)))
958 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
959 msg->sl.st.r_l = (ptr - msg_buf) - msg->sl.st.r;
960 http_msg_rpline_eol:
961 /* We have seen the end of line. Note that we do not
962 * necessarily have the \n yet, but at least we know that we
963 * have EITHER \r OR \n, otherwise the response would not be
964 * complete. We can then record the response length and return
965 * to the caller which will be able to register it.
966 */
967 msg->sl.st.l = ptr - msg->sol;
968 return ptr;
969
970#ifdef DEBUG_FULL
971 default:
972 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
973 exit(1);
974#endif
975 }
976
977 http_msg_ood:
978 /* out of data */
979 if (ret_state)
980 *ret_state = state;
981 if (ret_ptr)
982 *ret_ptr = (char *)ptr;
983 return NULL;
984
985 http_msg_invalid:
986 /* invalid message */
987 if (ret_state)
988 *ret_state = HTTP_MSG_ERROR;
989 return NULL;
990}
991
992
993/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]994 * This function parses a request line between <ptr> and <end>, starting with
995 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
996 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
997 * will give undefined results.
998 * Note that it is upon the caller's responsibility to ensure that ptr < end,
999 * and that msg->sol points to the beginning of the request.
1000 * If a complete line is found (which implies that at least one CR or LF is
1001 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1002 * returned indicating an incomplete line (which does not mean that parts have
1003 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1004 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1005 * upon next call.
1006 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1007 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1008 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1009 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1010 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1011 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1012const char *http_parse_reqline(struct http_msg *msg, const char *msg_buf, int state,
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1013 const char *ptr, const char *end,
1014 char **ret_ptr, int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1015{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1016 __label__
1017 http_msg_rqmeth,
1018 http_msg_rqmeth_sp,
1019 http_msg_rquri,
1020 http_msg_rquri_sp,
1021 http_msg_rqver,
1022 http_msg_rqline_eol,
1023 http_msg_ood, /* out of data */
1024 http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1025
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1026 switch (state) {
1027 http_msg_rqmeth:
1028 case HTTP_MSG_RQMETH:
1029 if (likely(HTTP_IS_TOKEN(*ptr)))
1030 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1031
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1032 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1033 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1034 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1035 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1036
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1037 if (likely(HTTP_IS_CRLF(*ptr))) {
1038 /* HTTP 0.9 request */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1039 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1040 http_msg_req09_uri:
1041 msg->sl.rq.u = ptr - msg_buf;
1042 http_msg_req09_uri_e:
1043 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1044 http_msg_req09_ver:
1045 msg->sl.rq.v = ptr - msg_buf;
1046 msg->sl.rq.v_l = 0;
1047 goto http_msg_rqline_eol;
1048 }
1049 goto http_msg_invalid;
1050
1051 http_msg_rqmeth_sp:
1052 case HTTP_MSG_RQMETH_SP:
1053 if (likely(!HTTP_IS_LWS(*ptr))) {
1054 msg->sl.rq.u = ptr - msg_buf;
1055 goto http_msg_rquri;
1056 }
1057 if (likely(HTTP_IS_SPHT(*ptr)))
1058 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1059 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1060 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1061
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1062 http_msg_rquri:
1063 case HTTP_MSG_RQURI:
1064 if (likely(!HTTP_IS_LWS(*ptr)))
1065 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1066
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1067 if (likely(HTTP_IS_SPHT(*ptr))) {
1068 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1069 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1070 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1071
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1072 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1073 goto http_msg_req09_uri_e;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1074
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1075 http_msg_rquri_sp:
1076 case HTTP_MSG_RQURI_SP:
1077 if (likely(!HTTP_IS_LWS(*ptr))) {
1078 msg->sl.rq.v = ptr - msg_buf;
1079 goto http_msg_rqver;
1080 }
1081 if (likely(HTTP_IS_SPHT(*ptr)))
1082 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1083 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1084 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1085
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1086 http_msg_rqver:
1087 case HTTP_MSG_RQVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1088 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1089 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1090
1091 if (likely(HTTP_IS_CRLF(*ptr))) {
1092 msg->sl.rq.v_l = (ptr - msg_buf) - msg->sl.rq.v;
1093 http_msg_rqline_eol:
1094 /* We have seen the end of line. Note that we do not
1095 * necessarily have the \n yet, but at least we know that we
1096 * have EITHER \r OR \n, otherwise the request would not be
1097 * complete. We can then record the request length and return
1098 * to the caller which will be able to register it.
1099 */
1100 msg->sl.rq.l = ptr - msg->sol;
1101 return ptr;
1102 }
1103
1104 /* neither an HTTP_VER token nor a CRLF */
1105 goto http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1106
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1107#ifdef DEBUG_FULL
1108 default:
1109 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1110 exit(1);
1111#endif
1112 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1113
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1114 http_msg_ood:
1115 /* out of data */
1116 if (ret_state)
1117 *ret_state = state;
1118 if (ret_ptr)
1119 *ret_ptr = (char *)ptr;
1120 return NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1121
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1122 http_msg_invalid:
1123 /* invalid message */
1124 if (ret_state)
1125 *ret_state = HTTP_MSG_ERROR;
1126 return NULL;
1127}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1128
1129
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1130/*
1131 * This function parses an HTTP message, either a request or a response,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1132 * depending on the initial msg->msg_state. It can be preempted everywhere
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1133 * when data are missing and recalled at the exact same location with no
1134 * information loss. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1135 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
1136 * fields.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1137 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1138void http_msg_analyzer(struct buffer *buf, struct http_msg *msg, struct hdr_idx *idx)
1139{
1140 __label__
1141 http_msg_rqbefore,
1142 http_msg_rqbefore_cr,
1143 http_msg_rqmeth,
1144 http_msg_rqline_end,
1145 http_msg_hdr_first,
1146 http_msg_hdr_name,
1147 http_msg_hdr_l1_sp,
1148 http_msg_hdr_l1_lf,
1149 http_msg_hdr_l1_lws,
1150 http_msg_hdr_val,
1151 http_msg_hdr_l2_lf,
1152 http_msg_hdr_l2_lws,
1153 http_msg_complete_header,
1154 http_msg_last_lf,
1155 http_msg_ood, /* out of data */
1156 http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1157
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1158 int state; /* updated only when leaving the FSM */
1159 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1160
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1161 state = msg->msg_state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1162 ptr = buf->lr;
1163 end = buf->r;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1164
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1165 if (unlikely(ptr >= end))
1166 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1167
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1168 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1169 /*
1170 * First, states that are specific to the response only.
1171 * We check them first so that request and headers are
1172 * closer to each other (accessed more often).
1173 */
1174 http_msg_rpbefore:
1175 case HTTP_MSG_RPBEFORE:
1176 if (likely(HTTP_IS_TOKEN(*ptr))) {
1177 if (likely(ptr == buf->data)) {
1178 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1179 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1180 } else {
1181#if PARSE_PRESERVE_EMPTY_LINES
1182 /* only skip empty leading lines, don't remove them */
1183 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1184 msg->som = ptr - buf->data;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1185#else
1186 /* Remove empty leading lines, as recommended by
1187 * RFC2616. This takes a lot of time because we
1188 * must move all the buffer backwards, but this
1189 * is rarely needed. The method above will be
1190 * cleaner when we'll be able to start sending
1191 * the request from any place in the buffer.
1192 */
1193 buf->lr = ptr;
1194 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1195 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1196 msg->sol = buf->data;
1197 ptr = buf->data;
1198 end = buf->r;
1199#endif
1200 }
1201 hdr_idx_init(idx);
1202 state = HTTP_MSG_RPVER;
1203 goto http_msg_rpver;
1204 }
1205
1206 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1207 goto http_msg_invalid;
1208
1209 if (unlikely(*ptr == '\n'))
1210 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1211 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1212 /* stop here */
1213
1214 http_msg_rpbefore_cr:
1215 case HTTP_MSG_RPBEFORE_CR:
1216 EXPECT_LF_HERE(ptr, http_msg_invalid);
1217 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1218 /* stop here */
1219
1220 http_msg_rpver:
1221 case HTTP_MSG_RPVER:
1222 case HTTP_MSG_RPVER_SP:
1223 case HTTP_MSG_RPCODE:
1224 case HTTP_MSG_RPCODE_SP:
1225 case HTTP_MSG_RPREASON:
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1226 ptr = (char *)http_parse_stsline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1227 &buf->lr, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1228 if (unlikely(!ptr))
1229 return;
1230
1231 /* we have a full response and we know that we have either a CR
1232 * or an LF at <ptr>.
1233 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1234 //fprintf(stderr,"som=%d rq.l=%d *ptr=0x%02x\n", msg->som, msg->sl.st.l, *ptr);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1235 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1236
1237 msg->sol = ptr;
1238 if (likely(*ptr == '\r'))
1239 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1240 goto http_msg_rpline_end;
1241
1242 http_msg_rpline_end:
1243 case HTTP_MSG_RPLINE_END:
1244 /* msg->sol must point to the first of CR or LF. */
1245 EXPECT_LF_HERE(ptr, http_msg_invalid);
1246 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1247 /* stop here */
1248
1249 /*
1250 * Second, states that are specific to the request only
1251 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1252 http_msg_rqbefore:
1253 case HTTP_MSG_RQBEFORE:
1254 if (likely(HTTP_IS_TOKEN(*ptr))) {
1255 if (likely(ptr == buf->data)) {
1256 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1257 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1258 } else {
1259#if PARSE_PRESERVE_EMPTY_LINES
1260 /* only skip empty leading lines, don't remove them */
1261 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1262 msg->som = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1263#else
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1264 /* Remove empty leading lines, as recommended by
1265 * RFC2616. This takes a lot of time because we
1266 * must move all the buffer backwards, but this
1267 * is rarely needed. The method above will be
1268 * cleaner when we'll be able to start sending
1269 * the request from any place in the buffer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1270 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1271 buf->lr = ptr;
1272 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1273 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1274 msg->sol = buf->data;
1275 ptr = buf->data;
1276 end = buf->r;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1277#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1278 }
Willy Tarreauf0d058e2007-01-25 12:03:42 +0100[diff] [blame]1279 /* we will need this when keep-alive will be supported
1280 hdr_idx_init(idx);
1281 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1282 state = HTTP_MSG_RQMETH;
1283 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1284 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1285
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1286 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1287 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1288
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1289 if (unlikely(*ptr == '\n'))
1290 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1291 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1292 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1293
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1294 http_msg_rqbefore_cr:
1295 case HTTP_MSG_RQBEFORE_CR:
1296 EXPECT_LF_HERE(ptr, http_msg_invalid);
1297 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1298 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1299
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1300 http_msg_rqmeth:
1301 case HTTP_MSG_RQMETH:
1302 case HTTP_MSG_RQMETH_SP:
1303 case HTTP_MSG_RQURI:
1304 case HTTP_MSG_RQURI_SP:
1305 case HTTP_MSG_RQVER:
1306 ptr = (char *)http_parse_reqline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1307 &buf->lr, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1308 if (unlikely(!ptr))
1309 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1310
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1311 /* we have a full request and we know that we have either a CR
1312 * or an LF at <ptr>.
1313 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1314 //fprintf(stderr,"som=%d rq.l=%d *ptr=0x%02x\n", msg->som, msg->sl.rq.l, *ptr);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1315 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1316
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1317 msg->sol = ptr;
1318 if (likely(*ptr == '\r'))
1319 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1320 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1321
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1322 http_msg_rqline_end:
1323 case HTTP_MSG_RQLINE_END:
1324 /* check for HTTP/0.9 request : no version information available.
1325 * msg->sol must point to the first of CR or LF.
1326 */
1327 if (unlikely(msg->sl.rq.v_l == 0))
1328 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1329
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1330 EXPECT_LF_HERE(ptr, http_msg_invalid);
1331 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1332 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1333
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1334 /*
1335 * Common states below
1336 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1337 http_msg_hdr_first:
1338 case HTTP_MSG_HDR_FIRST:
1339 msg->sol = ptr;
1340 if (likely(!HTTP_IS_CRLF(*ptr))) {
1341 goto http_msg_hdr_name;
1342 }
1343
1344 if (likely(*ptr == '\r'))
1345 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1346 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1347
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1348 http_msg_hdr_name:
1349 case HTTP_MSG_HDR_NAME:
1350 /* assumes msg->sol points to the first char */
1351 if (likely(HTTP_IS_TOKEN(*ptr)))
1352 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1353
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1354 if (likely(*ptr == ':')) {
1355 msg->col = ptr - buf->data;
1356 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
1357 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1358
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1359 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1360
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1361 http_msg_hdr_l1_sp:
1362 case HTTP_MSG_HDR_L1_SP:
1363 /* assumes msg->sol points to the first char and msg->col to the colon */
1364 if (likely(HTTP_IS_SPHT(*ptr)))
1365 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1366
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1367 /* header value can be basically anything except CR/LF */
1368 msg->sov = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1369
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1370 if (likely(!HTTP_IS_CRLF(*ptr))) {
1371 goto http_msg_hdr_val;
1372 }
1373
1374 if (likely(*ptr == '\r'))
1375 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1376 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1377
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1378 http_msg_hdr_l1_lf:
1379 case HTTP_MSG_HDR_L1_LF:
1380 EXPECT_LF_HERE(ptr, http_msg_invalid);
1381 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lws, HTTP_MSG_HDR_L1_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1382
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1383 http_msg_hdr_l1_lws:
1384 case HTTP_MSG_HDR_L1_LWS:
1385 if (likely(HTTP_IS_SPHT(*ptr))) {
1386 /* replace HT,CR,LF with spaces */
1387 for (; buf->data+msg->sov < ptr; msg->sov++)
1388 buf->data[msg->sov] = ' ';
1389 goto http_msg_hdr_l1_sp;
1390 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1391 /* we had a header consisting only in spaces ! */
1392 msg->eol = buf->data + msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1393 goto http_msg_complete_header;
1394
1395 http_msg_hdr_val:
1396 case HTTP_MSG_HDR_VAL:
1397 /* assumes msg->sol points to the first char, msg->col to the
1398 * colon, and msg->sov points to the first character of the
1399 * value.
1400 */
1401 if (likely(!HTTP_IS_CRLF(*ptr)))
1402 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1403
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1404 msg->eol = ptr;
1405 /* Note: we could also copy eol into ->eoh so that we have the
1406 * real header end in case it ends with lots of LWS, but is this
1407 * really needed ?
1408 */
1409 if (likely(*ptr == '\r'))
1410 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1411 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1412
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1413 http_msg_hdr_l2_lf:
1414 case HTTP_MSG_HDR_L2_LF:
1415 EXPECT_LF_HERE(ptr, http_msg_invalid);
1416 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lws, HTTP_MSG_HDR_L2_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1417
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1418 http_msg_hdr_l2_lws:
1419 case HTTP_MSG_HDR_L2_LWS:
1420 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1421 /* LWS: replace HT,CR,LF with spaces */
1422 for (; msg->eol < ptr; msg->eol++)
1423 *msg->eol = ' ';
1424 goto http_msg_hdr_val;
1425 }
1426 http_msg_complete_header:
1427 /*
1428 * It was a new header, so the last one is finished.
1429 * Assumes msg->sol points to the first char, msg->col to the
1430 * colon, msg->sov points to the first character of the value
1431 * and msg->eol to the first CR or LF so we know how the line
1432 * ends. We insert last header into the index.
1433 */
1434 /*
1435 fprintf(stderr,"registering %-2d bytes : ", msg->eol - msg->sol);
1436 write(2, msg->sol, msg->eol-msg->sol);
1437 fprintf(stderr,"\n");
1438 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1439
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1440 if (unlikely(hdr_idx_add(msg->eol - msg->sol, *msg->eol == '\r',
1441 idx, idx->tail) < 0))
1442 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1443
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1444 msg->sol = ptr;
1445 if (likely(!HTTP_IS_CRLF(*ptr))) {
1446 goto http_msg_hdr_name;
1447 }
1448
1449 if (likely(*ptr == '\r'))
1450 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1451 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1452
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1453 http_msg_last_lf:
1454 case HTTP_MSG_LAST_LF:
1455 /* Assumes msg->sol points to the first of either CR or LF */
1456 EXPECT_LF_HERE(ptr, http_msg_invalid);
1457 ptr++;
1458 buf->lr = ptr;
1459 msg->eoh = msg->sol - buf->data;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1460 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1461 return;
1462#ifdef DEBUG_FULL
1463 default:
1464 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1465 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1466#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1467 }
1468 http_msg_ood:
1469 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1470 msg->msg_state = state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1471 buf->lr = ptr;
1472 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1473
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1474 http_msg_invalid:
1475 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1476 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1477 return;
1478}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1479
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1480/*
1481 * manages the client FSM and its socket. BTW, it also tries to handle the
1482 * cookie. It returns 1 if a state has changed (and a resync may be needed),
1483 * 0 else.
1484 */
1485int process_cli(struct session *t)
1486{
1487 int s = t->srv_state;
1488 int c = t->cli_state;
1489 struct buffer *req = t->req;
1490 struct buffer *rep = t->rep;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1491
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1492 DPRINTF(stderr,"process_cli: c=%s s=%s set(r,w)=%d,%d exp(r,w)=%d.%d,%d.%d\n",
1493 cli_stnames[c], srv_stnames[s],
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1494 EV_FD_ISSET(t->cli_fd, DIR_RD), EV_FD_ISSET(t->cli_fd, DIR_WR),
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1495 req->rex.tv_sec, req->rex.tv_usec,
1496 rep->wex.tv_sec, rep->wex.tv_usec);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1497
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1498 if (c == CL_STHEADERS) {
1499 /*
1500 * Now parse the partial (or complete) lines.
1501 * We will check the request syntax, and also join multi-line
1502 * headers. An index of all the lines will be elaborated while
1503 * parsing.
1504 *
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1505 * For the parsing, we use a 28 states FSM.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1506 *
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1507 * Here is the information we currently have :
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1508 * req->data + req->som = beginning of request
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1509 * req->data + req->eoh = end of processed headers / start of current one
1510 * req->data + req->eol = end of current header or line (LF or CRLF)
1511 * req->lr = first non-visited byte
1512 * req->r = end of data
1513 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1514
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1515 int cur_idx;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1516 struct http_txn *txn = &t->txn;
1517 struct http_msg *msg = &txn->req;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1518 struct proxy *cur_proxy;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1519
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1520 if (likely(req->lr < req->r))
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1521 http_msg_analyzer(req, msg, &txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1522
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1523 /* 1: we might have to print this header in debug mode */
1524 if (unlikely((global.mode & MODE_DEBUG) &&
1525 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1526 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1527 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1528
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1529 sol = req->data + msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1530 eol = sol + msg->sl.rq.l;
1531 debug_hdr("clireq", t, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1532
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1533 sol += hdr_idx_first_pos(&txn->hdr_idx);
1534 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1535
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1536 while (cur_idx) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1537 eol = sol + txn->hdr_idx.v[cur_idx].len;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1538 debug_hdr("clihdr", t, sol, eol);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1539 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
1540 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1541 }
1542 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1543
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1544
1545 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1546 * Now we quickly check if we have found a full valid request.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1547 * If not so, we check the FD and buffer states before leaving.
1548 * A full request is indicated by the fact that we have seen
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1549 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
1550 * requests are checked first.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1551 *
1552 */
1553
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1554 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1555 /*
1556 * First, let's catch bad requests.
1557 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1558 if (unlikely(msg->msg_state == HTTP_MSG_ERROR))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1559 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1560
1561 /* 1: Since we are in header mode, if there's no space
1562 * left for headers, we won't be able to free more
1563 * later, so the session will never terminate. We
1564 * must terminate it now.
1565 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1566 if (unlikely(req->l >= req->rlim - req->data)) {
1567 /* FIXME: check if URI is set and return Status
1568 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1569 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1570 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1571 }
1572
1573 /* 2: have we encountered a read error or a close ? */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1574 else if (unlikely(req->flags & (BF_READ_ERROR | BF_READ_NULL))) {
1575 /* read error, or last read : give up. */
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]1576 buffer_shutr(req);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1577 fd_delete(t->cli_fd);
1578 t->cli_state = CL_STCLOSE;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]1579 t->fe->failed_req++;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1580 if (!(t->flags & SN_ERR_MASK))
1581 t->flags |= SN_ERR_CLICL;
1582 if (!(t->flags & SN_FINST_MASK))
1583 t->flags |= SN_FINST_R;
1584 return 1;
1585 }
1586
1587 /* 3: has the read timeout expired ? */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]1588 else if (unlikely(tv_isle(&req->rex, &now))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1589 /* read timeout : give up with an error message. */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1590 txn->status = 408;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1591 client_retnclose(t, error_message(t, HTTP_ERR_408));
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]1592 t->fe->failed_req++;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1593 if (!(t->flags & SN_ERR_MASK))
1594 t->flags |= SN_ERR_CLITO;
1595 if (!(t->flags & SN_FINST_MASK))
1596 t->flags |= SN_FINST_R;
1597 return 1;
1598 }
1599
1600 /* 4: do we need to re-enable the read socket ? */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]1601 else if (unlikely(EV_FD_COND_S(t->cli_fd, DIR_RD))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1602 /* fd in DIR_RD was disabled, perhaps because of a previous buffer
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1603 * full. We cannot loop here since stream_sock_read will disable it only if
1604 * req->l == rlim-data
1605 */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]1606 if (!tv_add_ifset(&req->rex, &now, &t->fe->clitimeout))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1607 tv_eternity(&req->rex);
1608 }
1609 return t->cli_state != CL_STHEADERS;
1610 }
1611
1612
1613 /****************************************************************
1614 * More interesting part now : we know that we have a complete *
1615 * request which at least looks like HTTP. We have an indicator *
1616 * of each header's length, so we can parse them quickly. *
1617 ****************************************************************/
1618
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1619 /* ensure we keep this pointer to the beginning of the message */
1620 msg->sol = req->data + msg->som;
1621
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1622 /*
1623 * 1: identify the method
1624 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1625 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1626
1627 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1628 * 2: check if the URI matches the monitor_uri.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1629 * We have to do this for every request which gets in, because
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1630 * the monitor-uri is defined by the frontend.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1631 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1632 if (unlikely((t->fe->monitor_uri_len != 0) &&
1633 (t->fe->monitor_uri_len == msg->sl.rq.u_l) &&
1634 !memcmp(&req->data[msg->sl.rq.u],
1635 t->fe->monitor_uri,
1636 t->fe->monitor_uri_len))) {
1637 /*
1638 * We have found the monitor URI
1639 */
1640 t->flags |= SN_MONITOR;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1641 txn->status = 200;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1642 client_retnclose(t, &http_200_chunk);
1643 goto return_prx_cond;
1644 }
1645
1646 /*
1647 * 3: Maybe we have to copy the original REQURI for the logs ?
1648 * Note: we cannot log anymore if the request has been
1649 * classified as invalid.
1650 */
1651 if (unlikely(t->logs.logwait & LW_REQ)) {
1652 /* we have a complete HTTP request that we must log */
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]1653 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1654 int urilen = msg->sl.rq.l;
1655
1656 if (urilen >= REQURI_LEN)
1657 urilen = REQURI_LEN - 1;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1658 memcpy(txn->uri, &req->data[msg->som], urilen);
1659 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1660
1661 if (!(t->logs.logwait &= ~LW_REQ))
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1662 http_sess_log(t);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1663 } else {
1664 Alert("HTTP logging : out of memory.\n");
1665 }
1666 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1667
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1668
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1669 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
1670 if (unlikely(msg->sl.rq.v_l == 0)) {
1671 int delta;
1672 char *cur_end;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1673 msg->sol = req->data + msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1674 cur_end = msg->sol + msg->sl.rq.l;
1675 delta = 0;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1676
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1677 if (msg->sl.rq.u_l == 0) {
1678 /* if no URI was set, add "/" */
1679 delta = buffer_replace2(req, cur_end, cur_end, " /", 2);
1680 cur_end += delta;
1681 msg->eoh += delta;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1682 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1683 /* add HTTP version */
1684 delta = buffer_replace2(req, cur_end, cur_end, " HTTP/1.0\r\n", 11);
1685 msg->eoh += delta;
1686 cur_end += delta;
1687 cur_end = (char *)http_parse_reqline(msg, req->data,
1688 HTTP_MSG_RQMETH,
1689 msg->sol, cur_end + 1,
1690 NULL, NULL);
1691 if (unlikely(!cur_end))
1692 goto return_bad_req;
1693
1694 /* we have a full HTTP/1.0 request now and we know that
1695 * we have either a CR or an LF at <ptr>.
1696 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1697 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1698 }
1699
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1700
1701 /* 5: we may need to capture headers */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1702 if (unlikely((t->logs.logwait & LW_REQHDR) && t->fe->req_cap))
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1703 capture_headers(req->data + msg->som, &txn->hdr_idx,
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1704 txn->req.cap, t->fe->req_cap);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1705
1706 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1707 * 6: we will have to evaluate the filters.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1708 * As opposed to version 1.2, now they will be evaluated in the
1709 * filters order and not in the header order. This means that
1710 * each filter has to be validated among all headers.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1711 *
1712 * We can now check whether we want to switch to another
1713 * backend, in which case we will re-check the backend's
1714 * filters and various options. In order to support 3-level
1715 * switching, here's how we should proceed :
1716 *
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1717 * a) run be.
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1718 * if (switch) then switch ->be to the new backend.
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1719 * b) run be if (be != fe).
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1720 * There cannot be any switch from there, so ->be cannot be
1721 * changed anymore.
1722 *
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1723 * => filters always apply to ->be, then ->be may change.
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1724 *
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1725 * The response path will be able to apply either ->be, or
1726 * ->be then ->fe filters in order to match the reverse of
1727 * the forward sequence.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1728 */
1729
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1730 do {
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1731 struct acl_cond *cond;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1732 struct proxy *rule_set = t->be;
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1733 cur_proxy = t->be;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1734
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1735 /* first check whether we have some ACLs set to block this request */
1736 list_for_each_entry(cond, &cur_proxy->block_cond, list) {
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]1737 int ret = acl_exec_cond(cond, cur_proxy, t, txn, ACL_DIR_REQ);
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1738 if (cond->pol == ACL_COND_UNLESS)
1739 ret = !ret;
1740
1741 if (ret) {
1742 txn->status = 403;
1743 /* let's log the request time */
1744 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
1745 client_retnclose(t, error_message(t, HTTP_ERR_403));
1746 goto return_prx_cond;
1747 }
1748 }
1749
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1750 /* try headers filters */
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1751 if (rule_set->req_exp != NULL) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1752 if (apply_filters_to_request(t, req, rule_set->req_exp) < 0)
1753 goto return_bad_req;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1754 }
1755
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1756 if (!(t->flags & SN_BE_ASSIGNED) && (t->be != cur_proxy)) {
1757 /* to ensure correct connection accounting on
1758 * the backend, we count the connection for the
1759 * one managing the queue.
1760 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1761 t->be->beconn++;
1762 if (t->be->beconn > t->be->beconn_max)
1763 t->be->beconn_max = t->be->beconn;
1764 t->be->cum_beconn++;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1765 t->flags |= SN_BE_ASSIGNED;
1766 }
1767
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1768 /* has the request been denied ? */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]1769 if (txn->flags & TX_CLDENY) {
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1770 /* no need to go further */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1771 txn->status = 403;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1772 /* let's log the request time */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]1773 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1774 client_retnclose(t, error_message(t, HTTP_ERR_403));
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1775 goto return_prx_cond;
1776 }
1777
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1778 /* We might have to check for "Connection:" */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1779 if (((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1780 !(t->flags & SN_CONN_CLOSED)) {
1781 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1782 int cur_idx, old_idx, delta, val;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1783 struct hdr_idx_elem *cur_hdr;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1784
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1785 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1786 old_idx = 0;
1787
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1788 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
1789 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1790 cur_ptr = cur_next;
1791 cur_end = cur_ptr + cur_hdr->len;
1792 cur_next = cur_end + cur_hdr->cr + 1;
1793
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1794 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
1795 if (val) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1796 /* 3 possibilities :
1797 * - we have already set Connection: close,
1798 * so we remove this line.
1799 * - we have not yet set Connection: close,
1800 * but this line indicates close. We leave
1801 * it untouched and set the flag.
1802 * - we have not yet set Connection: close,
1803 * and this line indicates non-close. We
1804 * replace it.
1805 */
1806 if (t->flags & SN_CONN_CLOSED) {
1807 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1808 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1809 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1810 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
1811 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1812 cur_hdr->len = 0;
1813 } else {
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1814 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
1815 delta = buffer_replace2(req, cur_ptr + val, cur_end,
1816 "close", 5);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1817 cur_next += delta;
1818 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1819 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1820 }
1821 t->flags |= SN_CONN_CLOSED;
1822 }
1823 }
1824 old_idx = cur_idx;
1825 }
Willy Tarreauf2f0ee82007-03-30 12:02:43 +0200[diff] [blame]1826 }
1827 /* add request headers from the rule sets in the same order */
1828 for (cur_idx = 0; cur_idx < rule_set->nb_reqadd; cur_idx++) {
1829 if (unlikely(http_header_add_tail(req,
1830 &txn->req,
1831 &txn->hdr_idx,
1832 rule_set->req_add[cur_idx])) < 0)
1833 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1834 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]1835
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1836 /* check if stats URI was requested, and if an auth is needed */
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]1837 if (rule_set->uri_auth != NULL &&
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1838 (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)) {
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]1839 /* we have to check the URI and auth for this request */
1840 if (stats_check_uri_auth(t, rule_set))
1841 return 1;
1842 }
1843
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]1844 /* now check whether we have some switching rules for this request */
1845 if (!(t->flags & SN_BE_ASSIGNED)) {
1846 struct switching_rule *rule;
1847
1848 list_for_each_entry(rule, &cur_proxy->switching_rules, list) {
1849 int ret;
1850
1851 ret = acl_exec_cond(rule->cond, cur_proxy, t, txn, ACL_DIR_REQ);
1852 if (cond->pol == ACL_COND_UNLESS)
1853 ret = !ret;
1854
1855 if (ret) {
1856 t->be = rule->be.backend;
1857 t->be->beconn++;
1858 if (t->be->beconn > t->be->beconn_max)
1859 t->be->beconn_max = t->be->beconn;
1860 t->be->cum_beconn++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]1861
1862 /* assign new parameters to the session from the new backend */
1863 t->rep->rto = t->req->wto = t->be->srvtimeout;
1864 t->req->cto = t->be->contimeout;
1865 t->conn_retries = t->be->conn_retries;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]1866 t->flags |= SN_BE_ASSIGNED;
1867 break;
1868 }
1869 }
1870 }
1871
Willy Tarreau5fdfb912007-01-01 23:11:07 +0100[diff] [blame]1872 if (!(t->flags & SN_BE_ASSIGNED) && cur_proxy->defbe.be) {
1873 /* No backend was set, but there was a default
1874 * backend set in the frontend, so we use it and
1875 * loop again.
1876 */
1877 t->be = cur_proxy->defbe.be;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1878 t->be->beconn++;
1879 if (t->be->beconn > t->be->beconn_max)
1880 t->be->beconn_max = t->be->beconn;
1881 t->be->cum_beconn++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]1882
1883 /* assign new parameters to the session from the new backend */
1884 t->rep->rto = t->req->wto = t->be->srvtimeout;
1885 t->req->cto = t->be->contimeout;
1886 t->conn_retries = t->be->conn_retries;
Willy Tarreau5fdfb912007-01-01 23:11:07 +0100[diff] [blame]1887 t->flags |= SN_BE_ASSIGNED;
1888 }
1889 } while (t->be != cur_proxy); /* we loop only if t->be has changed */
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1890
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1891
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1892 if (!(t->flags & SN_BE_ASSIGNED)) {
1893 /* To ensure correct connection accounting on
1894 * the backend, we count the connection for the
1895 * one managing the queue.
1896 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1897 t->be->beconn++;
1898 if (t->be->beconn > t->be->beconn_max)
1899 t->be->beconn_max = t->be->beconn;
1900 t->be->cum_beconn++;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1901 t->flags |= SN_BE_ASSIGNED;
1902 }
1903
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1904 /*
1905 * Right now, we know that we have processed the entire headers
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1906 * and that unwanted requests have been filtered out. We can do
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1907 * whatever we want with the remaining request. Also, now we
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1908 * may have separate values for ->fe, ->be.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1909 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1910
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1911 /*
1912 * If HTTP PROXY is set we simply get remote server address
1913 * parsing incoming request.
1914 */
1915 if ((t->be->options & PR_O_HTTP_PROXY) && !(t->flags & SN_ADDR_SET)) {
1916 url2sa(req->data + msg->sl.rq.u, msg->sl.rq.u_l, &t->srv_addr);
1917 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1918
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1919 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1920 * 7: the appsession cookie was looked up very early in 1.2,
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1921 * so let's do the same now.
1922 */
1923
1924 /* It needs to look into the URI */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1925 if (t->be->appsession_name) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1926 get_srv_from_appsession(t, &req->data[msg->som], msg->sl.rq.l);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1927 }
1928
1929
1930 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1931 * 8: Now we can work with the cookies.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1932 * Note that doing so might move headers in the request, but
1933 * the fields will stay coherent and the URI will not move.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1934 * This should only be performed in the backend.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1935 */
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]1936 if ((t->be->cookie_name || t->be->appsession_name || t->be->capture_name)
1937 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1938 manage_client_side_cookies(t, req);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1939
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1940
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1941 /*
Willy Tarreaubb046ac2007-03-03 19:17:03 +0100[diff] [blame]1942 * 9: add X-Forwarded-For if either the frontend or the backend
1943 * asks for it.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1944 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1945 if ((t->fe->options | t->be->options) & PR_O_FWDFOR) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1946 if (t->cli_addr.ss_family == AF_INET) {
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]1947 /* Add an X-Forwarded-For header unless the source IP is
1948 * in the 'except' network range.
1949 */
1950 if ((!t->fe->except_mask.s_addr ||
1951 (((struct sockaddr_in *)&t->cli_addr)->sin_addr.s_addr & t->fe->except_mask.s_addr)
1952 != t->fe->except_net.s_addr) &&
1953 (!t->be->except_mask.s_addr ||
1954 (((struct sockaddr_in *)&t->cli_addr)->sin_addr.s_addr & t->be->except_mask.s_addr)
1955 != t->be->except_net.s_addr)) {
1956 int len;
1957 unsigned char *pn;
1958 pn = (unsigned char *)&((struct sockaddr_in *)&t->cli_addr)->sin_addr;
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1959
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]1960 len = sprintf(trash, "X-Forwarded-For: %d.%d.%d.%d",
1961 pn[0], pn[1], pn[2], pn[3]);
1962
1963 if (unlikely(http_header_add_tail2(req, &txn->req,
1964 &txn->hdr_idx, trash, len)) < 0)
1965 goto return_bad_req;
1966 }
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1967 }
1968 else if (t->cli_addr.ss_family == AF_INET6) {
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]1969 /* FIXME: for the sake of completeness, we should also support
1970 * 'except' here, although it is mostly useless in this case.
1971 */
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1972 int len;
1973 char pn[INET6_ADDRSTRLEN];
1974 inet_ntop(AF_INET6,
1975 (const void *)&((struct sockaddr_in6 *)(&t->cli_addr))->sin6_addr,
1976 pn, sizeof(pn));
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]1977 len = sprintf(trash, "X-Forwarded-For: %s", pn);
1978 if (unlikely(http_header_add_tail2(req, &txn->req,
1979 &txn->hdr_idx, trash, len)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1980 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1981 }
1982 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1983
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1984 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1985 * 10: add "Connection: close" if needed and not yet set.
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]1986 * 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]1987 */
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]1988 if (!(t->flags & SN_CONN_CLOSED) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1989 ((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE)) {
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]1990 if ((unlikely(msg->sl.rq.v_l != 8) ||
1991 unlikely(req->data[msg->som + msg->sl.rq.v + 7] != '0')) &&
1992 unlikely(http_header_add_tail2(req, &txn->req, &txn->hdr_idx,
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]1993 "Connection: close", 17)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1994 goto return_bad_req;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1995 t->flags |= SN_CONN_CLOSED;
Willy Tarreaue15d9132006-12-14 22:26:42 +0100[diff] [blame]1996 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1997
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1998 /*************************************************************
1999 * OK, that's finished for the headers. We have done what we *
2000 * could. Let's switch to the DATA state. *
2001 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2002
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2003 t->cli_state = CL_STDATA;
2004 req->rlim = req->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2005
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2006 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2007
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]2008 if (!tv_isset(&t->fe->clitimeout) ||
2009 (t->srv_state < SV_STDATA && tv_isset(&t->be->srvtimeout))) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2010 /* If the client has no timeout, or if the server is not ready yet,
2011 * and we know for sure that it can expire, then it's cleaner to
2012 * disable the timeout on the client side so that too low values
2013 * cannot make the sessions abort too early.
2014 *
2015 * FIXME-20050705: the server needs a way to re-enable this time-out
2016 * when it switches its state, otherwise a client can stay connected
2017 * indefinitely. This now seems to be OK.
2018 */
2019 tv_eternity(&req->rex);
2020 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2021
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2022 /* When a connection is tarpitted, we use the queue timeout for the
2023 * tarpit delay, which currently happens to be the server's connect
2024 * timeout. If unset, then set it to zero because we really want it
2025 * to expire at one moment.
2026 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2027 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2028 t->req->l = 0;
2029 /* flush the request so that we can drop the connection early
2030 * if the client closes first.
2031 */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2032 if (!tv_add_ifset(&req->cex, &now, &t->be->contimeout))
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]2033 req->cex = now;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2034 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2035
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2036 /* OK let's go on with the BODY now */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2037 goto process_data;
2038
2039 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]2040 txn->req.msg_state = HTTP_MSG_ERROR;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2041 txn->status = 400;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2042 client_retnclose(t, error_message(t, HTTP_ERR_400));
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]2043 t->fe->failed_req++;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2044 return_prx_cond:
2045 if (!(t->flags & SN_ERR_MASK))
2046 t->flags |= SN_ERR_PRXCOND;
2047 if (!(t->flags & SN_FINST_MASK))
2048 t->flags |= SN_FINST_R;
2049 return 1;
2050
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2051 }
2052 else if (c == CL_STDATA) {
2053 process_data:
2054 /* FIXME: this error handling is partly buggy because we always report
2055 * a 'DATA' phase while we don't know if the server was in IDLE, CONN
2056 * or HEADER phase. BTW, it's not logical to expire the client while
2057 * we're waiting for the server to connect.
2058 */
2059 /* read or write error */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2060 if (rep->flags & BF_WRITE_ERROR || req->flags & BF_READ_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2061 buffer_shutr(req);
2062 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2063 fd_delete(t->cli_fd);
2064 t->cli_state = CL_STCLOSE;
2065 if (!(t->flags & SN_ERR_MASK))
2066 t->flags |= SN_ERR_CLICL;
2067 if (!(t->flags & SN_FINST_MASK)) {
2068 if (t->pend_pos)
2069 t->flags |= SN_FINST_Q;
2070 else if (s == SV_STCONN)
2071 t->flags |= SN_FINST_C;
2072 else
2073 t->flags |= SN_FINST_D;
2074 }
2075 return 1;
2076 }
2077 /* last read, or end of server write */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2078 else if (req->flags & BF_READ_NULL || s == SV_STSHUTW || s == SV_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2079 EV_FD_CLR(t->cli_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2080 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2081 t->cli_state = CL_STSHUTR;
2082 return 1;
2083 }
2084 /* last server read and buffer empty */
2085 else if ((s == SV_STSHUTR || s == SV_STCLOSE) && (rep->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2086 EV_FD_CLR(t->cli_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2087 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2088 shutdown(t->cli_fd, SHUT_WR);
2089 /* We must ensure that the read part is still alive when switching
2090 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2091 EV_FD_SET(t->cli_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2092 tv_add_ifset(&req->rex, &now, &t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2093 t->cli_state = CL_STSHUTW;
2094 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2095 return 1;
2096 }
2097 /* read timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2098 else if (tv_isle(&req->rex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2099 EV_FD_CLR(t->cli_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2100 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2101 t->cli_state = CL_STSHUTR;
2102 if (!(t->flags & SN_ERR_MASK))
2103 t->flags |= SN_ERR_CLITO;
2104 if (!(t->flags & SN_FINST_MASK)) {
2105 if (t->pend_pos)
2106 t->flags |= SN_FINST_Q;
2107 else if (s == SV_STCONN)
2108 t->flags |= SN_FINST_C;
2109 else
2110 t->flags |= SN_FINST_D;
2111 }
2112 return 1;
2113 }
2114 /* write timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2115 else if (tv_isle(&rep->wex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2116 EV_FD_CLR(t->cli_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2117 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2118 shutdown(t->cli_fd, SHUT_WR);
2119 /* We must ensure that the read part is still alive when switching
2120 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2121 EV_FD_SET(t->cli_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2122 tv_add_ifset(&req->rex, &now, &t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2123
2124 t->cli_state = CL_STSHUTW;
2125 if (!(t->flags & SN_ERR_MASK))
2126 t->flags |= SN_ERR_CLITO;
2127 if (!(t->flags & SN_FINST_MASK)) {
2128 if (t->pend_pos)
2129 t->flags |= SN_FINST_Q;
2130 else if (s == SV_STCONN)
2131 t->flags |= SN_FINST_C;
2132 else
2133 t->flags |= SN_FINST_D;
2134 }
2135 return 1;
2136 }
2137
2138 if (req->l >= req->rlim - req->data) {
2139 /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2140 if (EV_FD_COND_C(t->cli_fd, DIR_RD)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2141 /* stop reading until we get some space */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2142 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2143 }
2144 } else {
2145 /* there's still some space in the buffer */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2146 if (EV_FD_COND_S(t->cli_fd, DIR_RD)) {
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]2147 if (!tv_isset(&t->fe->clitimeout) ||
2148 (t->srv_state < SV_STDATA && tv_isset(&t->be->srvtimeout)))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2149 /* If the client has no timeout, or if the server not ready yet, and we
2150 * know for sure that it can expire, then it's cleaner to disable the
2151 * timeout on the client side so that too low values cannot make the
2152 * sessions abort too early.
2153 */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2154 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2155 else
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]2156 tv_add(&req->rex, &now, &t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2157 }
2158 }
2159
2160 if ((rep->l == 0) ||
2161 ((s < SV_STDATA) /* FIXME: this may be optimized && (rep->w == rep->h)*/)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2162 if (EV_FD_COND_C(t->cli_fd, DIR_WR)) {
2163 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2164 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2165 }
2166 } else {
2167 /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2168 if (EV_FD_COND_S(t->cli_fd, DIR_WR)) {
2169 /* restart writing */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2170 if (tv_add_ifset(&rep->wex, &now, &t->fe->clitimeout)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2171 /* FIXME: to prevent the client from expiring read timeouts during writes,
2172 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2173 req->rex = rep->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2174 }
2175 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2176 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2177 }
2178 }
2179 return 0; /* other cases change nothing */
2180 }
2181 else if (c == CL_STSHUTR) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2182 if (rep->flags & BF_WRITE_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2183 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2184 fd_delete(t->cli_fd);
2185 t->cli_state = CL_STCLOSE;
2186 if (!(t->flags & SN_ERR_MASK))
2187 t->flags |= SN_ERR_CLICL;
2188 if (!(t->flags & SN_FINST_MASK)) {
2189 if (t->pend_pos)
2190 t->flags |= SN_FINST_Q;
2191 else if (s == SV_STCONN)
2192 t->flags |= SN_FINST_C;
2193 else
2194 t->flags |= SN_FINST_D;
2195 }
2196 return 1;
2197 }
2198 else if ((s == SV_STSHUTR || s == SV_STCLOSE) && (rep->l == 0)
2199 && !(t->flags & SN_SELF_GEN)) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2200 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2201 fd_delete(t->cli_fd);
2202 t->cli_state = CL_STCLOSE;
2203 return 1;
2204 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2205 else if (tv_isle(&rep->wex, &now)) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2206 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2207 fd_delete(t->cli_fd);
2208 t->cli_state = CL_STCLOSE;
2209 if (!(t->flags & SN_ERR_MASK))
2210 t->flags |= SN_ERR_CLITO;
2211 if (!(t->flags & SN_FINST_MASK)) {
2212 if (t->pend_pos)
2213 t->flags |= SN_FINST_Q;
2214 else if (s == SV_STCONN)
2215 t->flags |= SN_FINST_C;
2216 else
2217 t->flags |= SN_FINST_D;
2218 }
2219 return 1;
2220 }
2221
2222 if (t->flags & SN_SELF_GEN) {
2223 produce_content(t);
2224 if (rep->l == 0) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2225 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2226 fd_delete(t->cli_fd);
2227 t->cli_state = CL_STCLOSE;
2228 return 1;
2229 }
2230 }
2231
2232 if ((rep->l == 0)
2233 || ((s == SV_STHEADERS) /* FIXME: this may be optimized && (rep->w == rep->h)*/)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2234 if (EV_FD_COND_C(t->cli_fd, DIR_WR)) {
2235 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2236 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2237 }
2238 } else {
2239 /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2240 if (EV_FD_COND_S(t->cli_fd, DIR_WR)) {
2241 /* restart writing */
Willy Tarreau33014d02007-06-03 15:25:37 +0200[diff] [blame]2242 if (!tv_add_ifset(&rep->wex, &now, &t->fe->clitimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2243 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2244 }
2245 }
2246 return 0;
2247 }
2248 else if (c == CL_STSHUTW) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2249 if (req->flags & BF_READ_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2250 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2251 fd_delete(t->cli_fd);
2252 t->cli_state = CL_STCLOSE;
2253 if (!(t->flags & SN_ERR_MASK))
2254 t->flags |= SN_ERR_CLICL;
2255 if (!(t->flags & SN_FINST_MASK)) {
2256 if (t->pend_pos)
2257 t->flags |= SN_FINST_Q;
2258 else if (s == SV_STCONN)
2259 t->flags |= SN_FINST_C;
2260 else
2261 t->flags |= SN_FINST_D;
2262 }
2263 return 1;
2264 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2265 else if (req->flags & BF_READ_NULL || s == SV_STSHUTW || s == SV_STCLOSE) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2266 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2267 fd_delete(t->cli_fd);
2268 t->cli_state = CL_STCLOSE;
2269 return 1;
2270 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2271 else if (tv_isle(&req->rex, &now)) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2272 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2273 fd_delete(t->cli_fd);
2274 t->cli_state = CL_STCLOSE;
2275 if (!(t->flags & SN_ERR_MASK))
2276 t->flags |= SN_ERR_CLITO;
2277 if (!(t->flags & SN_FINST_MASK)) {
2278 if (t->pend_pos)
2279 t->flags |= SN_FINST_Q;
2280 else if (s == SV_STCONN)
2281 t->flags |= SN_FINST_C;
2282 else
2283 t->flags |= SN_FINST_D;
2284 }
2285 return 1;
2286 }
2287 else if (req->l >= req->rlim - req->data) {
2288 /* no room to read more data */
2289
2290 /* FIXME-20050705: is it possible for a client to maintain a session
2291 * after the timeout by sending more data after it receives a close ?
2292 */
2293
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2294 if (EV_FD_COND_C(t->cli_fd, DIR_RD)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2295 /* stop reading until we get some space */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2296 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2297 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2298 }
2299 } else {
2300 /* there's still some space in the buffer */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2301 if (EV_FD_COND_S(t->cli_fd, DIR_RD)) {
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2302 if (!tv_add_ifset(&req->rex, &now, &t->fe->clitimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2303 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2304 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2305 }
2306 }
2307 return 0;
2308 }
2309 else { /* CL_STCLOSE: nothing to do */
2310 if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
2311 int len;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2312 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]2313 write(1, trash, len);
2314 }
2315 return 0;
2316 }
2317 return 0;
2318}
2319
2320
2321/*
2322 * manages the server FSM and its socket. It returns 1 if a state has changed
2323 * (and a resync may be needed), 0 else.
2324 */
2325int process_srv(struct session *t)
2326{
2327 int s = t->srv_state;
2328 int c = t->cli_state;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2329 struct http_txn *txn = &t->txn;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2330 struct buffer *req = t->req;
2331 struct buffer *rep = t->rep;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2332 int conn_err;
2333
2334#ifdef DEBUG_FULL
2335 fprintf(stderr,"process_srv: c=%s, s=%s\n", cli_stnames[c], srv_stnames[s]);
2336#endif
Willy Tarreauee991362007-05-14 14:37:50 +0200[diff] [blame]2337
2338#if 0
2339 fprintf(stderr,"%s:%d fe->clito=%d.%d, fe->conto=%d.%d, fe->srvto=%d.%d\n",
2340 __FUNCTION__, __LINE__,
2341 t->fe->clitimeout.tv_sec, t->fe->clitimeout.tv_usec,
2342 t->fe->contimeout.tv_sec, t->fe->contimeout.tv_usec,
2343 t->fe->srvtimeout.tv_sec, t->fe->srvtimeout.tv_usec);
2344 fprintf(stderr,"%s:%d be->clito=%d.%d, be->conto=%d.%d, be->srvto=%d.%d\n",
2345 __FUNCTION__, __LINE__,
2346 t->be->clitimeout.tv_sec, t->be->clitimeout.tv_usec,
2347 t->be->contimeout.tv_sec, t->be->contimeout.tv_usec,
2348 t->be->srvtimeout.tv_sec, t->be->srvtimeout.tv_usec);
2349
2350 fprintf(stderr,"%s:%d req->cto=%d.%d, req->rto=%d.%d, req->wto=%d.%d\n",
2351 __FUNCTION__, __LINE__,
2352 req->cto.tv_sec, req->cto.tv_usec,
2353 req->rto.tv_sec, req->rto.tv_usec,
2354 req->wto.tv_sec, req->wto.tv_usec);
2355
2356 fprintf(stderr,"%s:%d rep->cto=%d.%d, rep->rto=%d.%d, rep->wto=%d.%d\n",
2357 __FUNCTION__, __LINE__,
2358 rep->cto.tv_sec, rep->cto.tv_usec,
2359 rep->rto.tv_sec, rep->rto.tv_usec,
2360 rep->wto.tv_sec, rep->wto.tv_usec);
2361#endif
2362
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2363 //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]2364 //EV_FD_ISSET(t->cli_fd, DIR_RD), EV_FD_ISSET(t->cli_fd, DIR_WR),
2365 //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]2366 //);
2367 if (s == SV_STIDLE) {
2368 if (c == CL_STHEADERS)
2369 return 0; /* stay in idle, waiting for data to reach the client side */
2370 else if (c == CL_STCLOSE || c == CL_STSHUTW ||
2371 (c == CL_STSHUTR &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2372 (t->req->l == 0 || t->be->options & PR_O_ABRT_CLOSE))) { /* give up */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2373 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2374 if (t->pend_pos)
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2375 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2376 /* note that this must not return any error because it would be able to
2377 * overwrite the client_retnclose() output.
2378 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2379 if (txn->flags & TX_CLTARPIT)
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2380 srv_close_with_err(t, SN_ERR_CLICL, SN_FINST_T, 0, NULL);
Willy Tarreau08fa2e32006-09-03 10:47:37 +0200[diff] [blame]2381 else
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2382 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]2383
2384 return 1;
2385 }
2386 else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2387 if (txn->flags & TX_CLTARPIT) {
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2388 /* This connection is being tarpitted. The CLIENT side has
2389 * already set the connect expiration date to the right
2390 * timeout. We just have to check that it has not expired.
2391 */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2392 if (!tv_isle(&req->cex, &now))
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2393 return 0;
2394
2395 /* We will set the queue timer to the time spent, just for
2396 * logging purposes. We fake a 500 server error, so that the
2397 * attacker will not suspect his connection has been tarpitted.
2398 * It will not cause trouble to the logs because we can exclude
2399 * the tarpitted connections by filtering on the 'PT' status flags.
2400 */
2401 tv_eternity(&req->cex);
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2402 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2403 srv_close_with_err(t, SN_ERR_PRXCOND, SN_FINST_T,
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2404 500, error_message(t, HTTP_ERR_500));
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2405 return 1;
2406 }
2407
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2408 /* Right now, we will need to create a connection to the server.
2409 * We might already have tried, and got a connection pending, in
2410 * which case we will not do anything till it's pending. It's up
2411 * to any other session to release it and wake us up again.
2412 */
2413 if (t->pend_pos) {
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2414 if (!tv_isle(&req->cex, &now))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2415 return 0;
2416 else {
2417 /* we've been waiting too long here */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2418 tv_eternity(&req->cex);
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2419 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2420 srv_close_with_err(t, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2421 503, error_message(t, HTTP_ERR_503));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2422 if (t->srv)
2423 t->srv->failed_conns++;
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2424 t->fe->failed_conns++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2425 return 1;
2426 }
2427 }
2428
2429 do {
2430 /* first, get a connection */
2431 if (srv_redispatch_connect(t))
2432 return t->srv_state != SV_STIDLE;
2433
2434 /* try to (re-)connect to the server, and fail if we expire the
2435 * number of retries.
2436 */
2437 if (srv_retryable_connect(t)) {
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2438 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2439 return t->srv_state != SV_STIDLE;
2440 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2441 } while (1);
2442 }
2443 }
2444 else if (s == SV_STCONN) { /* connection in progress */
2445 if (c == CL_STCLOSE || c == CL_STSHUTW ||
2446 (c == CL_STSHUTR &&
Willy Tarreauc9b654b2007-05-08 14:46:53 +0200[diff] [blame]2447 ((t->req->l == 0 && !(req->flags & BF_WRITE_STATUS)) ||
2448 t->be->options & PR_O_ABRT_CLOSE))) { /* give up */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2449 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2450 fd_delete(t->srv_fd);
2451 if (t->srv)
2452 t->srv->cur_sess--;
2453
2454 /* note that this must not return any error because it would be able to
2455 * overwrite the client_retnclose() output.
2456 */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2457 srv_close_with_err(t, SN_ERR_CLICL, SN_FINST_C, 0, NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2458 return 1;
2459 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2460 if (!(req->flags & BF_WRITE_STATUS) && !tv_isle(&req->cex, &now)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2461 //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]2462 return 0; /* nothing changed */
2463 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2464 else if (!(req->flags & BF_WRITE_STATUS) || (req->flags & BF_WRITE_ERROR)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2465 /* timeout, asynchronous connect error or first write error */
2466 //fprintf(stderr,"2: c=%d, s=%d\n", c, s);
2467
2468 fd_delete(t->srv_fd);
2469 if (t->srv)
2470 t->srv->cur_sess--;
2471
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2472 if (!(req->flags & BF_WRITE_STATUS))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2473 conn_err = SN_ERR_SRVTO; // it was a connect timeout.
2474 else
2475 conn_err = SN_ERR_SRVCL; // it was an asynchronous connect error.
2476
2477 /* ensure that we have enough retries left */
2478 if (srv_count_retry_down(t, conn_err))
2479 return 1;
2480
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2481 if (t->srv && t->conn_retries == 0 && t->be->options & PR_O_REDISP) {
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2482 /* We're on our last chance, and the REDISP option was specified.
2483 * We will ignore cookie and force to balance or use the dispatcher.
2484 */
2485 /* let's try to offer this slot to anybody */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2486 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2487 task_wakeup(t->srv->queue_mgt);
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2488
2489 if (t->srv)
2490 t->srv->failed_conns++;
Krzysztof Oledzki1cf36ba2007-10-18 19:12:30 +0200[diff] [blame]2491 t->be->redispatches++;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2492
2493 t->flags &= ~(SN_DIRECT | SN_ASSIGNED | SN_ADDR_SET);
2494 t->srv = NULL; /* it's left to the dispatcher to choose a server */
Willy Tarreaua5e65752007-03-18 20:53:22 +0100[diff] [blame]2495 http_flush_cookie_flags(txn);
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2496
2497 /* first, get a connection */
2498 if (srv_redispatch_connect(t))
2499 return t->srv_state != SV_STIDLE;
2500 }
2501
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2502 do {
2503 /* Now we will try to either reconnect to the same server or
2504 * connect to another server. If the connection gets queued
2505 * because all servers are saturated, then we will go back to
2506 * the SV_STIDLE state.
2507 */
2508 if (srv_retryable_connect(t)) {
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2509 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2510 return t->srv_state != SV_STCONN;
2511 }
2512
2513 /* we need to redispatch the connection to another server */
2514 if (srv_redispatch_connect(t))
2515 return t->srv_state != SV_STCONN;
2516 } while (1);
2517 }
2518 else { /* no error or write 0 */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2519 t->logs.t_connect = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2520
2521 //fprintf(stderr,"3: c=%d, s=%d\n", c, s);
2522 if (req->l == 0) /* nothing to write */ {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2523 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2524 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2525 } else /* need the right to write */ {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2526 EV_FD_SET(t->srv_fd, DIR_WR);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2527 if (tv_add_ifset(&req->wex, &now, &t->be->srvtimeout)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2528 /* FIXME: to prevent the server from expiring read timeouts during writes,
2529 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2530 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2531 }
2532 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2533 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2534 }
2535
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2536 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]2537 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2538 if (!tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2539 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2540
2541 t->srv_state = SV_STDATA;
2542 if (t->srv)
2543 t->srv->cum_sess++;
2544 rep->rlim = rep->data + BUFSIZE; /* no rewrite needed */
2545
2546 /* if the user wants to log as soon as possible, without counting
2547 bytes from the server, then this is the right moment. */
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2548 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2549 t->logs.t_close = t->logs.t_connect; /* to get a valid end date */
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]2550 tcp_sess_log(t);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2551 }
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]2552#ifdef CONFIG_HAP_TCPSPLICE
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2553 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]2554 /* TCP splicing supported by both FE and BE */
2555 tcp_splice_splicefd(t->cli_fd, t->srv_fd, 0);
2556 }
2557#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2558 }
2559 else {
2560 t->srv_state = SV_STHEADERS;
2561 if (t->srv)
2562 t->srv->cum_sess++;
2563 rep->rlim = rep->data + BUFSIZE - MAXREWRITE; /* rewrite needed */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2564 t->txn.rsp.msg_state = HTTP_MSG_RPBEFORE;
2565 /* reset hdr_idx which was already initialized by the request.
2566 * right now, the http parser does it.
2567 * hdr_idx_init(&t->txn.hdr_idx);
2568 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2569 }
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 return 1;
2572 }
2573 }
2574 else if (s == SV_STHEADERS) { /* receiving server headers */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2575 /*
2576 * Now parse the partial (or complete) lines.
2577 * We will check the response syntax, and also join multi-line
2578 * headers. An index of all the lines will be elaborated while
2579 * parsing.
2580 *
2581 * For the parsing, we use a 28 states FSM.
2582 *
2583 * Here is the information we currently have :
2584 * rep->data + req->som = beginning of response
2585 * rep->data + req->eoh = end of processed headers / start of current one
2586 * rep->data + req->eol = end of current header or line (LF or CRLF)
2587 * rep->lr = first non-visited byte
2588 * rep->r = end of data
2589 */
2590
2591 int cur_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2592 struct http_msg *msg = &txn->rsp;
2593 struct proxy *cur_proxy;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2594
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2595 if (likely(rep->lr < rep->r))
2596 http_msg_analyzer(rep, msg, &txn->hdr_idx);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2597
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2598 /* 1: we might have to print this header in debug mode */
2599 if (unlikely((global.mode & MODE_DEBUG) &&
2600 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
2601 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
2602 char *eol, *sol;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2603
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2604 sol = rep->data + msg->som;
2605 eol = sol + msg->sl.rq.l;
2606 debug_hdr("srvrep", t, sol, eol);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2607
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2608 sol += hdr_idx_first_pos(&txn->hdr_idx);
2609 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2610
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2611 while (cur_idx) {
2612 eol = sol + txn->hdr_idx.v[cur_idx].len;
2613 debug_hdr("srvhdr", t, sol, eol);
2614 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2615 cur_idx = txn->hdr_idx.v[cur_idx].next;
2616 }
2617 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2618
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2619
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2620 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]2621 /* fd in DIR_RD was disabled, perhaps because of a previous buffer
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2622 * full. We cannot loop here since stream_sock_read will disable it only if
2623 * rep->l == rlim-data
2624 */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2625 if (!tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2626 tv_eternity(&rep->rex);
2627 }
2628
2629
2630 /*
2631 * Now we quickly check if we have found a full valid response.
2632 * If not so, we check the FD and buffer states before leaving.
2633 * A full response is indicated by the fact that we have seen
2634 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
2635 * responses are checked first.
2636 *
2637 * Depending on whether the client is still there or not, we
2638 * may send an error response back or not. Note that normally
2639 * we should only check for HTTP status there, and check I/O
2640 * errors somewhere else.
2641 */
2642
2643 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
2644
2645 /* Invalid response, or read error or write error */
2646 if (unlikely((msg->msg_state == HTTP_MSG_ERROR) ||
2647 (req->flags & BF_WRITE_ERROR) ||
2648 (rep->flags & BF_READ_ERROR))) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2649 buffer_shutr(rep);
2650 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2651 fd_delete(t->srv_fd);
2652 if (t->srv) {
2653 t->srv->cur_sess--;
2654 t->srv->failed_resp++;
2655 }
2656 t->be->failed_resp++;
2657 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2658 txn->status = 502;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2659 client_return(t, error_message(t, HTTP_ERR_502));
2660 if (!(t->flags & SN_ERR_MASK))
2661 t->flags |= SN_ERR_SRVCL;
2662 if (!(t->flags & SN_FINST_MASK))
2663 t->flags |= SN_FINST_H;
2664 /* We used to have a free connection slot. Since we'll never use it,
2665 * we have to inform the server that it may be used by another session.
2666 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2667 if (t->srv && may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2668 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2669
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2670 return 1;
2671 }
2672
2673 /* end of client write or end of server read.
2674 * since we are in header mode, if there's no space left for headers, we
2675 * won't be able to free more later, so the session will never terminate.
2676 */
2677 else if (unlikely(rep->flags & BF_READ_NULL ||
2678 c == CL_STSHUTW || c == CL_STCLOSE ||
2679 rep->l >= rep->rlim - rep->data)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2680 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2681 buffer_shutr(rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2682 t->srv_state = SV_STSHUTR;
2683 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2684 return 1;
2685 }
2686
2687 /* read timeout : return a 504 to the client.
2688 */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2689 else if (unlikely(EV_FD_ISSET(t->srv_fd, DIR_RD) &&
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2690 tv_isle(&rep->rex, &now))) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2691 buffer_shutr(rep);
2692 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2693 fd_delete(t->srv_fd);
2694 if (t->srv) {
2695 t->srv->cur_sess--;
2696 t->srv->failed_resp++;
2697 }
2698 t->be->failed_resp++;
2699 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2700 txn->status = 504;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2701 client_return(t, error_message(t, HTTP_ERR_504));
2702 if (!(t->flags & SN_ERR_MASK))
2703 t->flags |= SN_ERR_SRVTO;
2704 if (!(t->flags & SN_FINST_MASK))
2705 t->flags |= SN_FINST_H;
2706 /* We used to have a free connection slot. Since we'll never use it,
2707 * we have to inform the server that it may be used by another session.
2708 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2709 if (t->srv && may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2710 task_wakeup(t->srv->queue_mgt);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2711 return 1;
2712 }
2713
2714 /* last client read and buffer empty */
2715 /* FIXME!!! here, we don't want to switch to SHUTW if the
2716 * client shuts read too early, because we may still have
2717 * some work to do on the headers.
2718 * The side-effect is that if the client completely closes its
2719 * connection during SV_STHEADER, the connection to the server
2720 * is kept until a response comes back or the timeout is reached.
2721 */
2722 else if (unlikely((/*c == CL_STSHUTR ||*/ c == CL_STCLOSE) &&
2723 (req->l == 0))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2724 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2725 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2726
2727 /* We must ensure that the read part is still
2728 * alive when switching to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2729 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2730 tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2731
2732 shutdown(t->srv_fd, SHUT_WR);
2733 t->srv_state = SV_STSHUTW;
2734 return 1;
2735 }
2736
2737 /* write timeout */
2738 /* FIXME!!! here, we don't want to switch to SHUTW if the
2739 * client shuts read too early, because we may still have
2740 * some work to do on the headers.
2741 */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2742 else if (unlikely(EV_FD_ISSET(t->srv_fd, DIR_WR) &&
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2743 tv_isle(&req->wex, &now))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2744 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2745 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2746 shutdown(t->srv_fd, SHUT_WR);
2747 /* We must ensure that the read part is still alive
2748 * when switching to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2749 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2750 tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2751
2752 t->srv_state = SV_STSHUTW;
2753 if (!(t->flags & SN_ERR_MASK))
2754 t->flags |= SN_ERR_SRVTO;
2755 if (!(t->flags & SN_FINST_MASK))
2756 t->flags |= SN_FINST_H;
2757 return 1;
2758 }
2759
2760 /*
2761 * And now the non-error cases.
2762 */
2763
2764 /* Data remaining in the request buffer.
2765 * This happens during the first pass here, and during
2766 * long posts.
2767 */
2768 else if (likely(req->l)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2769 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
2770 /* restart writing */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2771 if (tv_add_ifset(&req->wex, &now, &t->be->srvtimeout)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2772 /* FIXME: to prevent the server from expiring read timeouts during writes,
2773 * we refresh it. */
2774 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2775 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2776 else
2777 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2778 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2779 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2780
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2781 /* nothing left in the request buffer */
2782 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2783 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
2784 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2785 tv_eternity(&req->wex);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2786 }
2787 }
2788
2789 return t->srv_state != SV_STHEADERS;
2790 }
2791
2792
2793 /*****************************************************************
2794 * More interesting part now : we know that we have a complete *
2795 * response which at least looks like HTTP. We have an indicator *
2796 * of each header's length, so we can parse them quickly. *
2797 ****************************************************************/
2798
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2799 /* ensure we keep this pointer to the beginning of the message */
2800 msg->sol = rep->data + msg->som;
2801
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2802 /*
2803 * 1: get the status code and check for cacheability.
2804 */
2805
2806 t->logs.logwait &= ~LW_RESP;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2807 txn->status = strl2ui(rep->data + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2808
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2809 switch (txn->status) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2810 case 200:
2811 case 203:
2812 case 206:
2813 case 300:
2814 case 301:
2815 case 410:
2816 /* RFC2616 @13.4:
2817 * "A response received with a status code of
2818 * 200, 203, 206, 300, 301 or 410 MAY be stored
2819 * by a cache (...) unless a cache-control
2820 * directive prohibits caching."
2821 *
2822 * RFC2616 @9.5: POST method :
2823 * "Responses to this method are not cacheable,
2824 * unless the response includes appropriate
2825 * Cache-Control or Expires header fields."
2826 */
2827 if (likely(txn->meth != HTTP_METH_POST) &&
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]2828 (t->be->options & (PR_O_CHK_CACHE|PR_O_COOK_NOC)))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2829 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2830 break;
2831 default:
2832 break;
2833 }
2834
2835 /*
2836 * 2: we may need to capture headers
2837 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2838 if (unlikely((t->logs.logwait & LW_RSPHDR) && t->fe->rsp_cap))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2839 capture_headers(rep->data + msg->som, &txn->hdr_idx,
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2840 txn->rsp.cap, t->fe->rsp_cap);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2841
2842 /*
2843 * 3: we will have to evaluate the filters.
2844 * As opposed to version 1.2, now they will be evaluated in the
2845 * filters order and not in the header order. This means that
2846 * each filter has to be validated among all headers.
2847 *
2848 * Filters are tried with ->be first, then with ->fe if it is
2849 * different from ->be.
2850 */
2851
2852 t->flags &= ~SN_CONN_CLOSED; /* prepare for inspection */
2853
2854 cur_proxy = t->be;
2855 while (1) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2856 struct proxy *rule_set = cur_proxy;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2857
2858 /* try headers filters */
2859 if (rule_set->rsp_exp != NULL) {
2860 if (apply_filters_to_response(t, rep, rule_set->rsp_exp) < 0) {
2861 return_bad_resp:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2862 if (t->srv) {
2863 t->srv->cur_sess--;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2864 t->srv->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2865 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2866 cur_proxy->failed_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2867 return_srv_prx_502:
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2868 buffer_shutr(rep);
2869 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2870 fd_delete(t->srv_fd);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2871 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2872 txn->status = 502;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2873 client_return(t, error_message(t, HTTP_ERR_502));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2874 if (!(t->flags & SN_ERR_MASK))
2875 t->flags |= SN_ERR_PRXCOND;
2876 if (!(t->flags & SN_FINST_MASK))
2877 t->flags |= SN_FINST_H;
2878 /* We used to have a free connection slot. Since we'll never use it,
2879 * we have to inform the server that it may be used by another session.
2880 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2881 if (t->srv && may_dequeue_tasks(t->srv, cur_proxy))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2882 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2883 return 1;
2884 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2885 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2886
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2887 /* has the response been denied ? */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2888 if (txn->flags & TX_SVDENY) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2889 if (t->srv) {
2890 t->srv->cur_sess--;
2891 t->srv->failed_secu++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2892 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2893 cur_proxy->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2894 goto return_srv_prx_502;
2895 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2896
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2897 /* We might have to check for "Connection:" */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2898 if (((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2899 !(t->flags & SN_CONN_CLOSED)) {
2900 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2901 int cur_idx, old_idx, delta, val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2902 struct hdr_idx_elem *cur_hdr;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2903
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2904 cur_next = rep->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
2905 old_idx = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2906
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2907 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
2908 cur_hdr = &txn->hdr_idx.v[cur_idx];
2909 cur_ptr = cur_next;
2910 cur_end = cur_ptr + cur_hdr->len;
2911 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2912
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2913 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
2914 if (val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2915 /* 3 possibilities :
2916 * - we have already set Connection: close,
2917 * so we remove this line.
2918 * - we have not yet set Connection: close,
2919 * but this line indicates close. We leave
2920 * it untouched and set the flag.
2921 * - we have not yet set Connection: close,
2922 * and this line indicates non-close. We
2923 * replace it.
2924 */
2925 if (t->flags & SN_CONN_CLOSED) {
2926 delta = buffer_replace2(rep, cur_ptr, cur_next, NULL, 0);
2927 txn->rsp.eoh += delta;
2928 cur_next += delta;
2929 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
2930 txn->hdr_idx.used--;
2931 cur_hdr->len = 0;
2932 } else {
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2933 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
2934 delta = buffer_replace2(rep, cur_ptr + val, cur_end,
2935 "close", 5);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2936 cur_next += delta;
2937 cur_hdr->len += delta;
2938 txn->rsp.eoh += delta;
2939 }
2940 t->flags |= SN_CONN_CLOSED;
2941 }
2942 }
2943 old_idx = cur_idx;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2944 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2945 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2946
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2947 /* add response headers from the rule sets in the same order */
2948 for (cur_idx = 0; cur_idx < rule_set->nb_rspadd; cur_idx++) {
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2949 if (unlikely(http_header_add_tail(rep, &txn->rsp, &txn->hdr_idx,
2950 rule_set->rsp_add[cur_idx])) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2951 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2952 }
2953
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2954 /* check whether we're already working on the frontend */
2955 if (cur_proxy == t->fe)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2956 break;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2957 cur_proxy = t->fe;
2958 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2959
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2960 /*
2961 * 4: check for server cookie.
2962 */
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]2963 if (t->be->cookie_name || t->be->appsession_name || t->be->capture_name
2964 || (t->be->options & PR_O_CHK_CACHE))
2965 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2966
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]2967
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2968 /*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]2969 * 5: check for cache-control or pragma headers if required.
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]2970 */
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]2971 if ((t->be->options & (PR_O_COOK_NOC | PR_O_CHK_CACHE)) != 0)
2972 check_response_for_cacheability(t, rep);
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]2973
2974 /*
2975 * 6: add server cookie in the response if needed
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2976 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2977 if ((t->srv) && !(t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_INS) &&
2978 (!(t->be->options & PR_O_COOK_POST) || (txn->meth == HTTP_METH_POST))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2979 int len;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2980
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2981 /* the server is known, it's not the one the client requested, we have to
2982 * insert a set-cookie here, except if we want to insert only on POST
2983 * requests and this one isn't. Note that servers which don't have cookies
2984 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2985 */
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2986 len = sprintf(trash, "Set-Cookie: %s=%s; path=/",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2987 t->be->cookie_name,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2988 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]2989
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2990 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
2991 trash, len)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2992 goto return_bad_resp;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2993 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2994
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2995 /* Here, we will tell an eventual cache on the client side that we don't
2996 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
2997 * Some caches understand the correct form: 'no-cache="set-cookie"', but
2998 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
2999 */
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]3000 if ((t->be->options & PR_O_COOK_NOC) && (txn->flags & TX_CACHEABLE)) {
3001
3002 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
3003
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3004 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3005 "Cache-control: private", 22)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3006 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3007 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3008 }
3009
3010
3011 /*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3012 * 7: check if result will be cacheable with a cookie.
3013 * We'll block the response if security checks have caught
3014 * nasty things such as a cacheable cookie.
3015 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3016 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) ==
3017 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3018 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3019
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3020 /* we're in presence of a cacheable response containing
3021 * a set-cookie header. We'll block it as requested by
3022 * the 'checkcache' option, and send an alert.
3023 */
3024 if (t->srv) {
3025 t->srv->cur_sess--;
3026 t->srv->failed_secu++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3027 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3028 t->be->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3029
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3030 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3031 t->be->id, t->srv?t->srv->id:"<dispatch>");
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3032 send_log(t->be, LOG_ALERT,
3033 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3034 t->be->id, t->srv?t->srv->id:"<dispatch>");
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3035 goto return_srv_prx_502;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3036 }
3037
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3038 /*
3039 * 8: add "Connection: close" if needed and not yet set.
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]3040 * 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]3041 */
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]3042 if (!(t->flags & SN_CONN_CLOSED) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3043 ((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE)) {
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]3044 if ((unlikely(msg->sl.st.v_l != 8) ||
3045 unlikely(req->data[msg->som + 7] != '0')) &&
3046 unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3047 "Connection: close", 17)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3048 goto return_bad_resp;
3049 t->flags |= SN_CONN_CLOSED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3050 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3051
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3052
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3053 /*************************************************************
3054 * OK, that's finished for the headers. We have done what we *
3055 * could. Let's switch to the DATA state. *
3056 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3057
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3058 t->srv_state = SV_STDATA;
3059 rep->rlim = rep->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]3060 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3061
3062 /* client connection already closed or option 'forceclose' required :
3063 * we close the server's outgoing connection right now.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3064 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3065 if ((req->l == 0) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3066 (c == CL_STSHUTR || c == CL_STCLOSE || t->be->options & PR_O_FORCE_CLO)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3067 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3068 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3069
3070 /* We must ensure that the read part is still alive when switching
3071 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3072 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3073 tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3074
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3075 shutdown(t->srv_fd, SHUT_WR);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3076 t->srv_state = SV_STSHUTW;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3077 }
3078
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3079#ifdef CONFIG_HAP_TCPSPLICE
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3080 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3081 /* TCP splicing supported by both FE and BE */
3082 tcp_splice_splicefd(t->cli_fd, t->srv_fd, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3083 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3084#endif
3085 /* if the user wants to log as soon as possible, without counting
3086 bytes from the server, then this is the right moment. */
3087 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
3088 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
Willy Tarreaub4987172007-03-18 16:28:03 +0100[diff] [blame]3089 t->logs.bytes_in = txn->rsp.eoh;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]3090 if (t->fe->to_log & LW_REQ)
3091 http_sess_log(t);
3092 else
3093 tcp_sess_log(t);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100[diff] [blame]3094 t->logs.bytes_in = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3095 }
3096
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3097 /* Note: we must not try to cheat by jumping directly to DATA,
3098 * otherwise we would not let the client side wake up.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3099 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3100
3101 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3102 }
3103 else if (s == SV_STDATA) {
3104 /* read or write error */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3105 if (req->flags & BF_WRITE_ERROR || rep->flags & BF_READ_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3106 buffer_shutr(rep);
3107 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3108 fd_delete(t->srv_fd);
3109 if (t->srv) {
3110 t->srv->cur_sess--;
3111 t->srv->failed_resp++;
3112 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3113 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3114 t->srv_state = SV_STCLOSE;
3115 if (!(t->flags & SN_ERR_MASK))
3116 t->flags |= SN_ERR_SRVCL;
3117 if (!(t->flags & SN_FINST_MASK))
3118 t->flags |= SN_FINST_D;
3119 /* We used to have a free connection slot. Since we'll never use it,
3120 * we have to inform the server that it may be used by another session.
3121 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3122 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3123 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3124
3125 return 1;
3126 }
3127 /* last read, or end of client write */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3128 else if (rep->flags & BF_READ_NULL || c == CL_STSHUTW || c == CL_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3129 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3130 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3131 t->srv_state = SV_STSHUTR;
3132 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
3133 return 1;
3134 }
3135 /* end of client read and no more data to send */
3136 else if ((c == CL_STSHUTR || c == CL_STCLOSE) && (req->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3137 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3138 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3139 shutdown(t->srv_fd, SHUT_WR);
3140 /* We must ensure that the read part is still alive when switching
3141 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3142 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3143 tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3144
3145 t->srv_state = SV_STSHUTW;
3146 return 1;
3147 }
3148 /* read timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3149 else if (tv_isle(&rep->rex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3150 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3151 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3152 t->srv_state = SV_STSHUTR;
3153 if (!(t->flags & SN_ERR_MASK))
3154 t->flags |= SN_ERR_SRVTO;
3155 if (!(t->flags & SN_FINST_MASK))
3156 t->flags |= SN_FINST_D;
3157 return 1;
3158 }
3159 /* write timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3160 else if (tv_isle(&req->wex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3161 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3162 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3163 shutdown(t->srv_fd, SHUT_WR);
3164 /* We must ensure that the read part is still alive when switching
3165 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3166 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3167 tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3168 t->srv_state = SV_STSHUTW;
3169 if (!(t->flags & SN_ERR_MASK))
3170 t->flags |= SN_ERR_SRVTO;
3171 if (!(t->flags & SN_FINST_MASK))
3172 t->flags |= SN_FINST_D;
3173 return 1;
3174 }
3175
3176 /* recompute request time-outs */
3177 if (req->l == 0) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3178 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
3179 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3180 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3181 }
3182 }
3183 else { /* buffer not empty, there are still data to be transferred */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3184 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
3185 /* restart writing */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3186 if (tv_add_ifset(&req->wex, &now, &t->be->srvtimeout)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3187 /* FIXME: to prevent the server from expiring read timeouts during writes,
3188 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3189 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3190 }
3191 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3192 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3193 }
3194 }
3195
3196 /* recompute response time-outs */
3197 if (rep->l == BUFSIZE) { /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3198 if (EV_FD_COND_C(t->srv_fd, DIR_RD)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3199 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3200 }
3201 }
3202 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3203 if (EV_FD_COND_S(t->srv_fd, DIR_RD)) {
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3204 if (!tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3205 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3206 }
3207 }
3208
3209 return 0; /* other cases change nothing */
3210 }
3211 else if (s == SV_STSHUTR) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3212 if (req->flags & BF_WRITE_ERROR) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3213 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3214 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3215 fd_delete(t->srv_fd);
3216 if (t->srv) {
3217 t->srv->cur_sess--;
3218 t->srv->failed_resp++;
3219 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3220 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3221 //close(t->srv_fd);
3222 t->srv_state = SV_STCLOSE;
3223 if (!(t->flags & SN_ERR_MASK))
3224 t->flags |= SN_ERR_SRVCL;
3225 if (!(t->flags & SN_FINST_MASK))
3226 t->flags |= SN_FINST_D;
3227 /* We used to have a free connection slot. Since we'll never use it,
3228 * we have to inform the server that it may be used by another session.
3229 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3230 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3231 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3232
3233 return 1;
3234 }
3235 else if ((c == CL_STSHUTR || c == CL_STCLOSE) && (req->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3236 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3237 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3238 fd_delete(t->srv_fd);
3239 if (t->srv)
3240 t->srv->cur_sess--;
3241 //close(t->srv_fd);
3242 t->srv_state = SV_STCLOSE;
3243 /* We used to have a free connection slot. Since we'll never use it,
3244 * we have to inform the server that it may be used by another session.
3245 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3246 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3247 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3248
3249 return 1;
3250 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3251 else if (tv_isle(&req->wex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3252 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3253 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3254 fd_delete(t->srv_fd);
3255 if (t->srv)
3256 t->srv->cur_sess--;
3257 //close(t->srv_fd);
3258 t->srv_state = SV_STCLOSE;
3259 if (!(t->flags & SN_ERR_MASK))
3260 t->flags |= SN_ERR_SRVTO;
3261 if (!(t->flags & SN_FINST_MASK))
3262 t->flags |= SN_FINST_D;
3263 /* We used to have a free connection slot. Since we'll never use it,
3264 * we have to inform the server that it may be used by another session.
3265 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3266 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3267 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3268
3269 return 1;
3270 }
3271 else if (req->l == 0) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3272 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
3273 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3274 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3275 }
3276 }
3277 else { /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3278 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
3279 /* restart writing */
Willy Tarreau33014d02007-06-03 15:25:37 +0200[diff] [blame]3280 if (!tv_add_ifset(&req->wex, &now, &t->be->srvtimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3281 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3282 }
3283 }
3284 return 0;
3285 }
3286 else if (s == SV_STSHUTW) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3287 if (rep->flags & BF_READ_ERROR) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3288 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3289 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3290 fd_delete(t->srv_fd);
3291 if (t->srv) {
3292 t->srv->cur_sess--;
3293 t->srv->failed_resp++;
3294 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3295 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3296 //close(t->srv_fd);
3297 t->srv_state = SV_STCLOSE;
3298 if (!(t->flags & SN_ERR_MASK))
3299 t->flags |= SN_ERR_SRVCL;
3300 if (!(t->flags & SN_FINST_MASK))
3301 t->flags |= SN_FINST_D;
3302 /* We used to have a free connection slot. Since we'll never use it,
3303 * we have to inform the server that it may be used by another session.
3304 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3305 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3306 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3307
3308 return 1;
3309 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3310 else if (rep->flags & BF_READ_NULL || c == CL_STSHUTW || c == CL_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3311 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3312 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3313 fd_delete(t->srv_fd);
3314 if (t->srv)
3315 t->srv->cur_sess--;
3316 //close(t->srv_fd);
3317 t->srv_state = SV_STCLOSE;
3318 /* We used to have a free connection slot. Since we'll never use it,
3319 * we have to inform the server that it may be used by another session.
3320 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3321 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3322 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3323
3324 return 1;
3325 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3326 else if (tv_isle(&rep->rex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3327 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3328 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3329 fd_delete(t->srv_fd);
3330 if (t->srv)
3331 t->srv->cur_sess--;
3332 //close(t->srv_fd);
3333 t->srv_state = SV_STCLOSE;
3334 if (!(t->flags & SN_ERR_MASK))
3335 t->flags |= SN_ERR_SRVTO;
3336 if (!(t->flags & SN_FINST_MASK))
3337 t->flags |= SN_FINST_D;
3338 /* We used to have a free connection slot. Since we'll never use it,
3339 * we have to inform the server that it may be used by another session.
3340 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3341 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3342 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3343
3344 return 1;
3345 }
3346 else if (rep->l == BUFSIZE) { /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3347 if (EV_FD_COND_C(t->srv_fd, DIR_RD)) {
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 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3352 if (EV_FD_COND_S(t->srv_fd, DIR_RD)) {
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3353 if (!tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3354 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3355 }
3356 }
3357 return 0;
3358 }
3359 else { /* SV_STCLOSE : nothing to do */
3360 if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
3361 int len;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3362 len = sprintf(trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3363 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]3364 write(1, trash, len);
3365 }
3366 return 0;
3367 }
3368 return 0;
3369}
3370
3371
3372/*
3373 * Produces data for the session <s> depending on its source. Expects to be
3374 * called with s->cli_state == CL_STSHUTR. Right now, only statistics can be
3375 * produced. It stops by itself by unsetting the SN_SELF_GEN flag from the
3376 * session, which it uses to keep on being called when there is free space in
3377 * the buffer, of simply by letting an empty buffer upon return. It returns 1
3378 * if it changes the session state from CL_STSHUTR, otherwise 0.
3379 */
3380int produce_content(struct session *s)
3381{
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3382 if (s->data_source == DATA_SRC_NONE) {
3383 s->flags &= ~SN_SELF_GEN;
3384 return 1;
3385 }
3386 else if (s->data_source == DATA_SRC_STATS) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3387 /* dump server statistics */
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]3388 int ret = stats_dump_http(s, s->be->uri_auth,
3389 (s->flags & SN_STAT_FMTCSV) ? 0 : STAT_FMT_HTML);
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3390 if (ret >= 0)
3391 return ret;
3392 /* -1 indicates an error */
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3393 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3394
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3395 /* unknown data source or internal error */
3396 s->txn.status = 500;
3397 client_retnclose(s, error_message(s, HTTP_ERR_500));
3398 if (!(s->flags & SN_ERR_MASK))
3399 s->flags |= SN_ERR_PRXCOND;
3400 if (!(s->flags & SN_FINST_MASK))
3401 s->flags |= SN_FINST_R;
3402 s->flags &= ~SN_SELF_GEN;
3403 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3404}
3405
3406
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3407/* Iterate the same filter through all request headers.
3408 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3409 * Since it can manage the switch to another backend, it updates the per-proxy
3410 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3411 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3412int 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]3413{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3414 char term;
3415 char *cur_ptr, *cur_end, *cur_next;
3416 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3417 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3418 struct hdr_idx_elem *cur_hdr;
3419 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]3420
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3421 last_hdr = 0;
3422
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3423 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3424 old_idx = 0;
3425
3426 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3427 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3428 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3429 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3430 (exp->action == ACT_ALLOW ||
3431 exp->action == ACT_DENY ||
3432 exp->action == ACT_TARPIT))
3433 return 0;
3434
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3435 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3436 if (!cur_idx)
3437 break;
3438
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3439 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3440 cur_ptr = cur_next;
3441 cur_end = cur_ptr + cur_hdr->len;
3442 cur_next = cur_end + cur_hdr->cr + 1;
3443
3444 /* Now we have one header between cur_ptr and cur_end,
3445 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3446 */
3447
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3448 /* The annoying part is that pattern matching needs
3449 * that we modify the contents to null-terminate all
3450 * strings before testing them.
3451 */
3452
3453 term = *cur_end;
3454 *cur_end = '\0';
3455
3456 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3457 switch (exp->action) {
3458 case ACT_SETBE:
3459 /* It is not possible to jump a second time.
3460 * FIXME: should we return an HTTP/500 here so that
3461 * the admin knows there's a problem ?
3462 */
3463 if (t->be != t->fe)
3464 break;
3465
3466 /* Swithing Proxy */
3467 t->be = (struct proxy *) exp->replace;
3468
3469 /* right now, the backend switch is not too much complicated
3470 * because we have associated req_cap and rsp_cap to the
3471 * frontend, and the beconn will be updated later.
3472 */
3473
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3474 t->rep->rto = t->req->wto = t->be->srvtimeout;
3475 t->req->cto = t->be->contimeout;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3476 t->conn_retries = t->be->conn_retries;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3477 last_hdr = 1;
3478 break;
3479
3480 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3481 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3482 last_hdr = 1;
3483 break;
3484
3485 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3486 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3487 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3488 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3489 break;
3490
3491 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3492 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3493 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3494 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3495 break;
3496
3497 case ACT_REPLACE:
3498 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3499 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3500 /* FIXME: if the user adds a newline in the replacement, the
3501 * index will not be recalculated for now, and the new line
3502 * will not be counted as a new header.
3503 */
3504
3505 cur_end += delta;
3506 cur_next += delta;
3507 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3508 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3509 break;
3510
3511 case ACT_REMOVE:
3512 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
3513 cur_next += delta;
3514
3515 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3516 txn->req.eoh += delta;
3517 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3518 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3519 cur_hdr->len = 0;
3520 cur_end = NULL; /* null-term has been rewritten */
3521 break;
3522
3523 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3524 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3525 if (cur_end)
3526 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3527
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3528 /* keep the link from this header to next one in case of later
3529 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3530 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3531 old_idx = cur_idx;
3532 }
3533 return 0;
3534}
3535
3536
3537/* Apply the filter to the request line.
3538 * Returns 0 if nothing has been done, 1 if the filter has been applied,
3539 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3540 * Since it can manage the switch to another backend, it updates the per-proxy
3541 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3542 */
3543int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
3544{
3545 char term;
3546 char *cur_ptr, *cur_end;
3547 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3548 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3549 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3550
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3551
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3552 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3553 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3554 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3555 (exp->action == ACT_ALLOW ||
3556 exp->action == ACT_DENY ||
3557 exp->action == ACT_TARPIT))
3558 return 0;
3559 else if (exp->action == ACT_REMOVE)
3560 return 0;
3561
3562 done = 0;
3563
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3564 cur_ptr = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3565 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3566
3567 /* Now we have the request line between cur_ptr and cur_end */
3568
3569 /* The annoying part is that pattern matching needs
3570 * that we modify the contents to null-terminate all
3571 * strings before testing them.
3572 */
3573
3574 term = *cur_end;
3575 *cur_end = '\0';
3576
3577 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3578 switch (exp->action) {
3579 case ACT_SETBE:
3580 /* It is not possible to jump a second time.
3581 * FIXME: should we return an HTTP/500 here so that
3582 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3583 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3584 if (t->be != t->fe)
3585 break;
3586
3587 /* Swithing Proxy */
3588 t->be = (struct proxy *) exp->replace;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3589
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3590 /* right now, the backend switch is not too much complicated
3591 * because we have associated req_cap and rsp_cap to the
3592 * frontend, and the beconn will be updated later.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3593 */
3594
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3595 t->rep->rto = t->req->wto = t->be->srvtimeout;
3596 t->req->cto = t->be->contimeout;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3597 t->conn_retries = t->be->conn_retries;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3598 done = 1;
3599 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3600
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3601 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3602 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3603 done = 1;
3604 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3605
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3606 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3607 txn->flags |= TX_CLDENY;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3608 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3609 done = 1;
3610 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3611
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3612 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3613 txn->flags |= TX_CLTARPIT;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3614 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3615 done = 1;
3616 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3617
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3618 case ACT_REPLACE:
3619 *cur_end = term; /* restore the string terminator */
3620 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3621 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3622 /* FIXME: if the user adds a newline in the replacement, the
3623 * index will not be recalculated for now, and the new line
3624 * will not be counted as a new header.
3625 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3626
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3627 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3628 cur_end += delta;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3629
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3630 txn->req.sol = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3631 cur_end = (char *)http_parse_reqline(&txn->req, req->data,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3632 HTTP_MSG_RQMETH,
3633 cur_ptr, cur_end + 1,
3634 NULL, NULL);
3635 if (unlikely(!cur_end))
3636 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3637
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3638 /* we have a full request and we know that we have either a CR
3639 * or an LF at <ptr>.
3640 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3641 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
3642 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]3643 /* there is no point trying this regex on headers */
3644 return 1;
3645 }
3646 }
3647 *cur_end = term; /* restore the string terminator */
3648 return done;
3649}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]3650
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3651
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3652
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3653/*
3654 * Apply all the req filters <exp> to all headers in buffer <req> of session <t>.
3655 * 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]3656 * unparsable request. Since it can manage the switch to another backend, it
3657 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3658 */
3659int apply_filters_to_request(struct session *t, struct buffer *req, struct hdr_exp *exp)
3660{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3661 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3662 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3663 while (exp && !(txn->flags & (TX_CLDENY|TX_CLTARPIT))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3664 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3665
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3666 /*
3667 * The interleaving of transformations and verdicts
3668 * makes it difficult to decide to continue or stop
3669 * the evaluation.
3670 */
3671
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3672 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3673 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
3674 exp->action == ACT_TARPIT || exp->action == ACT_PASS)) {
3675 exp = exp->next;
3676 continue;
3677 }
3678
3679 /* Apply the filter to the request line. */
3680 ret = apply_filter_to_req_line(t, req, exp);
3681 if (unlikely(ret < 0))
3682 return -1;
3683
3684 if (likely(ret == 0)) {
3685 /* The filter did not match the request, it can be
3686 * iterated through all headers.
3687 */
3688 apply_filter_to_req_headers(t, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3689 }
3690 exp = exp->next;
3691 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3692 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3693}
3694
3695
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3696
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3697/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3698 * Manage client-side cookie. It can impact performance by about 2% so it is
3699 * desirable to call it only when needed.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3700 */
3701void manage_client_side_cookies(struct session *t, struct buffer *req)
3702{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3703 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3704 char *p1, *p2, *p3, *p4;
3705 char *del_colon, *del_cookie, *colon;
3706 int app_cookies;
3707
3708 appsess *asession_temp = NULL;
3709 appsess local_asession;
3710
3711 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3712 int cur_idx, old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3713
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3714 /* Iterate through the headers.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3715 * we start with the start line.
3716 */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]3717 old_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3718 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3719
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3720 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3721 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3722 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3723
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3724 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3725 cur_ptr = cur_next;
3726 cur_end = cur_ptr + cur_hdr->len;
3727 cur_next = cur_end + cur_hdr->cr + 1;
3728
3729 /* We have one full header between cur_ptr and cur_end, and the
3730 * next header starts at cur_next. We're only interested in
3731 * "Cookie:" headers.
3732 */
3733
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3734 val = http_header_match2(cur_ptr, cur_end, "Cookie", 6);
3735 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3736 old_idx = cur_idx;
3737 continue;
3738 }
3739
3740 /* Now look for cookies. Conforming to RFC2109, we have to support
3741 * attributes whose name begin with a '$', and associate them with
3742 * the right cookie, if we want to delete this cookie.
3743 * So there are 3 cases for each cookie read :
3744 * 1) it's a special attribute, beginning with a '$' : ignore it.
3745 * 2) it's a server id cookie that we *MAY* want to delete : save
3746 * some pointers on it (last semi-colon, beginning of cookie...)
3747 * 3) it's an application cookie : we *MAY* have to delete a previous
3748 * "special" cookie.
3749 * At the end of loop, if a "special" cookie remains, we may have to
3750 * remove it. If no application cookie persists in the header, we
3751 * *MUST* delete it
3752 */
3753
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3754 colon = p1 = cur_ptr + val; /* first non-space char after 'Cookie:' */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3755
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3756 /* del_cookie == NULL => nothing to be deleted */
3757 del_colon = del_cookie = NULL;
3758 app_cookies = 0;
3759
3760 while (p1 < cur_end) {
3761 /* skip spaces and colons, but keep an eye on these ones */
3762 while (p1 < cur_end) {
3763 if (*p1 == ';' || *p1 == ',')
3764 colon = p1;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3765 else if (!isspace((unsigned char)*p1))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3766 break;
3767 p1++;
3768 }
3769
3770 if (p1 == cur_end)
3771 break;
3772
3773 /* p1 is at the beginning of the cookie name */
3774 p2 = p1;
3775 while (p2 < cur_end && *p2 != '=')
3776 p2++;
3777
3778 if (p2 == cur_end)
3779 break;
3780
3781 p3 = p2 + 1; /* skips the '=' sign */
3782 if (p3 == cur_end)
3783 break;
3784
3785 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3786 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';' && *p4 != ',')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3787 p4++;
3788
3789 /* here, we have the cookie name between p1 and p2,
3790 * and its value between p3 and p4.
3791 * we can process it :
3792 *
3793 * Cookie: NAME=VALUE;
3794 * | || || |
3795 * | || || +--> p4
3796 * | || |+-------> p3
3797 * | || +--------> p2
3798 * | |+------------> p1
3799 * | +-------------> colon
3800 * +--------------------> cur_ptr
3801 */
3802
3803 if (*p1 == '$') {
3804 /* skip this one */
3805 }
3806 else {
3807 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3808 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3809 txn->cli_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3810 (p4 - p1 >= t->fe->capture_namelen) &&
3811 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3812 int log_len = p4 - p1;
3813
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]3814 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3815 Alert("HTTP logging : out of memory.\n");
3816 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3817 if (log_len > t->fe->capture_len)
3818 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3819 memcpy(txn->cli_cookie, p1, log_len);
3820 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3821 }
3822 }
3823
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3824 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
3825 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3826 /* Cool... it's the right one */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3827 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3828 char *delim;
3829
3830 /* if we're in cookie prefix mode, we'll search the delimitor so that we
3831 * have the server ID betweek p3 and delim, and the original cookie between
3832 * delim+1 and p4. Otherwise, delim==p4 :
3833 *
3834 * Cookie: NAME=SRV~VALUE;
3835 * | || || | |
3836 * | || || | +--> p4
3837 * | || || +--------> delim
3838 * | || |+-----------> p3
3839 * | || +------------> p2
3840 * | |+----------------> p1
3841 * | +-----------------> colon
3842 * +------------------------> cur_ptr
3843 */
3844
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3845 if (t->be->options & PR_O_COOK_PFX) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3846 for (delim = p3; delim < p4; delim++)
3847 if (*delim == COOKIE_DELIM)
3848 break;
3849 }
3850 else
3851 delim = p4;
3852
3853
3854 /* Here, we'll look for the first running server which supports the cookie.
3855 * This allows to share a same cookie between several servers, for example
3856 * to dedicate backup servers to specific servers only.
3857 * However, to prevent clients from sticking to cookie-less backup server
3858 * when they have incidentely learned an empty cookie, we simply ignore
3859 * empty cookies and mark them as invalid.
3860 */
3861 if (delim == p3)
3862 srv = NULL;
3863
3864 while (srv) {
Willy Tarreau92f2ab12007-02-02 22:14:47 +0100[diff] [blame]3865 if (srv->cookie && (srv->cklen == delim - p3) &&
3866 !memcmp(p3, srv->cookie, delim - p3)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3867 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3868 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3869 txn->flags &= ~TX_CK_MASK;
3870 txn->flags |= TX_CK_VALID;
3871 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3872 t->srv = srv;
3873 break;
3874 } else {
3875 /* we found a server, but it's down */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3876 txn->flags &= ~TX_CK_MASK;
3877 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3878 }
3879 }
3880 srv = srv->next;
3881 }
3882
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3883 if (!srv && !(txn->flags & TX_CK_DOWN)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3884 /* no server matched this cookie */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3885 txn->flags &= ~TX_CK_MASK;
3886 txn->flags |= TX_CK_INVALID;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3887 }
3888
3889 /* depending on the cookie mode, we may have to either :
3890 * - delete the complete cookie if we're in insert+indirect mode, so that
3891 * the server never sees it ;
3892 * - remove the server id from the cookie value, and tag the cookie as an
3893 * application cookie so that it does not get accidentely removed later,
3894 * if we're in cookie prefix mode
3895 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3896 if ((t->be->options & PR_O_COOK_PFX) && (delim != p4)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3897 int delta; /* negative */
3898
3899 delta = buffer_replace2(req, p3, delim + 1, NULL, 0);
3900 p4 += delta;
3901 cur_end += delta;
3902 cur_next += delta;
3903 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3904 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3905
3906 del_cookie = del_colon = NULL;
3907 app_cookies++; /* protect the header from deletion */
3908 }
3909 else if (del_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3910 (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]3911 del_cookie = p1;
3912 del_colon = colon;
3913 }
3914 } else {
3915 /* now we know that we must keep this cookie since it's
3916 * not ours. But if we wanted to delete our cookie
3917 * earlier, we cannot remove the complete header, but we
3918 * can remove the previous block itself.
3919 */
3920 app_cookies++;
3921
3922 if (del_cookie != NULL) {
3923 int delta; /* negative */
3924
3925 delta = buffer_replace2(req, del_cookie, p1, NULL, 0);
3926 p4 += delta;
3927 cur_end += delta;
3928 cur_next += delta;
3929 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3930 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3931 del_cookie = del_colon = NULL;
3932 }
3933 }
3934
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3935 if ((t->be->appsession_name != NULL) &&
3936 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3937 /* first, let's see if the cookie is our appcookie*/
3938
3939 /* Cool... it's the right one */
3940
3941 asession_temp = &local_asession;
3942
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3943 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3944 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
3945 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
3946 return;
3947 }
3948
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3949 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
3950 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3951 asession_temp->serverid = NULL;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3952
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3953 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3954 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
3955 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3956 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3957 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3958 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3959 Alert("Not enough memory process_cli():asession:calloc().\n");
3960 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
3961 return;
3962 }
3963
3964 asession_temp->sessid = local_asession.sessid;
3965 asession_temp->serverid = local_asession.serverid;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3966 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3967 } else {
3968 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3969 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3970 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3971 if (asession_temp->serverid == NULL) {
3972 Alert("Found Application Session without matching server.\n");
3973 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3974 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3975 while (srv) {
3976 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3977 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3978 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3979 txn->flags &= ~TX_CK_MASK;
3980 txn->flags |= TX_CK_VALID;
3981 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3982 t->srv = srv;
3983 break;
3984 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3985 txn->flags &= ~TX_CK_MASK;
3986 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3987 }
3988 }
3989 srv = srv->next;
3990 }/* end while(srv) */
3991 }/* end else if server == NULL */
3992
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]3993 tv_add(&asession_temp->expire, &now, &t->be->appsession_timeout);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3994 }/* end if ((t->proxy->appsession_name != NULL) ... */
3995 }
3996
3997 /* we'll have to look for another cookie ... */
3998 p1 = p4;
3999 } /* while (p1 < cur_end) */
4000
4001 /* There's no more cookie on this line.
4002 * We may have marked the last one(s) for deletion.
4003 * We must do this now in two ways :
4004 * - if there is no app cookie, we simply delete the header ;
4005 * - if there are app cookies, we must delete the end of the
4006 * string properly, including the colon/semi-colon before
4007 * the cookie name.
4008 */
4009 if (del_cookie != NULL) {
4010 int delta;
4011 if (app_cookies) {
4012 delta = buffer_replace2(req, del_colon, cur_end, NULL, 0);
4013 cur_end = del_colon;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4014 cur_hdr->len += delta;
4015 } else {
4016 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4017
4018 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4019 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4020 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4021 cur_hdr->len = 0;
4022 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]4023 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4024 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4025 }
4026
4027 /* keep the link from this header to next one */
4028 old_idx = cur_idx;
4029 } /* end of cookie processing on this header */
4030}
4031
4032
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4033/* Iterate the same filter through all response headers contained in <rtr>.
4034 * Returns 1 if this filter can be stopped upon return, otherwise 0.
4035 */
4036int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4037{
4038 char term;
4039 char *cur_ptr, *cur_end, *cur_next;
4040 int cur_idx, old_idx, last_hdr;
4041 struct http_txn *txn = &t->txn;
4042 struct hdr_idx_elem *cur_hdr;
4043 int len, delta;
4044
4045 last_hdr = 0;
4046
4047 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4048 old_idx = 0;
4049
4050 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4051 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4052 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4053 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4054 (exp->action == ACT_ALLOW ||
4055 exp->action == ACT_DENY))
4056 return 0;
4057
4058 cur_idx = txn->hdr_idx.v[old_idx].next;
4059 if (!cur_idx)
4060 break;
4061
4062 cur_hdr = &txn->hdr_idx.v[cur_idx];
4063 cur_ptr = cur_next;
4064 cur_end = cur_ptr + cur_hdr->len;
4065 cur_next = cur_end + cur_hdr->cr + 1;
4066
4067 /* Now we have one header between cur_ptr and cur_end,
4068 * and the next header starts at cur_next.
4069 */
4070
4071 /* The annoying part is that pattern matching needs
4072 * that we modify the contents to null-terminate all
4073 * strings before testing them.
4074 */
4075
4076 term = *cur_end;
4077 *cur_end = '\0';
4078
4079 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4080 switch (exp->action) {
4081 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4082 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4083 last_hdr = 1;
4084 break;
4085
4086 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4087 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4088 last_hdr = 1;
4089 break;
4090
4091 case ACT_REPLACE:
4092 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4093 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4094 /* FIXME: if the user adds a newline in the replacement, the
4095 * index will not be recalculated for now, and the new line
4096 * will not be counted as a new header.
4097 */
4098
4099 cur_end += delta;
4100 cur_next += delta;
4101 cur_hdr->len += delta;
4102 txn->rsp.eoh += delta;
4103 break;
4104
4105 case ACT_REMOVE:
4106 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4107 cur_next += delta;
4108
4109 /* FIXME: this should be a separate function */
4110 txn->rsp.eoh += delta;
4111 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4112 txn->hdr_idx.used--;
4113 cur_hdr->len = 0;
4114 cur_end = NULL; /* null-term has been rewritten */
4115 break;
4116
4117 }
4118 }
4119 if (cur_end)
4120 *cur_end = term; /* restore the string terminator */
4121
4122 /* keep the link from this header to next one in case of later
4123 * removal of next header.
4124 */
4125 old_idx = cur_idx;
4126 }
4127 return 0;
4128}
4129
4130
4131/* Apply the filter to the status line in the response buffer <rtr>.
4132 * Returns 0 if nothing has been done, 1 if the filter has been applied,
4133 * or -1 if a replacement resulted in an invalid status line.
4134 */
4135int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4136{
4137 char term;
4138 char *cur_ptr, *cur_end;
4139 int done;
4140 struct http_txn *txn = &t->txn;
4141 int len, delta;
4142
4143
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4144 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4145 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4146 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4147 (exp->action == ACT_ALLOW ||
4148 exp->action == ACT_DENY))
4149 return 0;
4150 else if (exp->action == ACT_REMOVE)
4151 return 0;
4152
4153 done = 0;
4154
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4155 cur_ptr = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4156 cur_end = cur_ptr + txn->rsp.sl.rq.l;
4157
4158 /* Now we have the status line between cur_ptr and cur_end */
4159
4160 /* The annoying part is that pattern matching needs
4161 * that we modify the contents to null-terminate all
4162 * strings before testing them.
4163 */
4164
4165 term = *cur_end;
4166 *cur_end = '\0';
4167
4168 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4169 switch (exp->action) {
4170 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4171 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4172 done = 1;
4173 break;
4174
4175 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4176 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4177 done = 1;
4178 break;
4179
4180 case ACT_REPLACE:
4181 *cur_end = term; /* restore the string terminator */
4182 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4183 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4184 /* FIXME: if the user adds a newline in the replacement, the
4185 * index will not be recalculated for now, and the new line
4186 * will not be counted as a new header.
4187 */
4188
4189 txn->rsp.eoh += delta;
4190 cur_end += delta;
4191
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4192 txn->rsp.sol = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4193 cur_end = (char *)http_parse_stsline(&txn->rsp, rtr->data,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]4194 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4195 cur_ptr, cur_end + 1,
4196 NULL, NULL);
4197 if (unlikely(!cur_end))
4198 return -1;
4199
4200 /* we have a full respnse and we know that we have either a CR
4201 * or an LF at <ptr>.
4202 */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4203 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]4204 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.rq.l, *cur_end == '\r');
4205 /* there is no point trying this regex on headers */
4206 return 1;
4207 }
4208 }
4209 *cur_end = term; /* restore the string terminator */
4210 return done;
4211}
4212
4213
4214
4215/*
4216 * Apply all the resp filters <exp> to all headers in buffer <rtr> of session <t>.
4217 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
4218 * unparsable response.
4219 */
4220int apply_filters_to_response(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4221{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4222 struct http_txn *txn = &t->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4223 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4224 while (exp && !(txn->flags & TX_SVDENY)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4225 int ret;
4226
4227 /*
4228 * The interleaving of transformations and verdicts
4229 * makes it difficult to decide to continue or stop
4230 * the evaluation.
4231 */
4232
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4233 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4234 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4235 exp->action == ACT_PASS)) {
4236 exp = exp->next;
4237 continue;
4238 }
4239
4240 /* Apply the filter to the status line. */
4241 ret = apply_filter_to_sts_line(t, rtr, exp);
4242 if (unlikely(ret < 0))
4243 return -1;
4244
4245 if (likely(ret == 0)) {
4246 /* The filter did not match the response, it can be
4247 * iterated through all headers.
4248 */
4249 apply_filter_to_resp_headers(t, rtr, exp);
4250 }
4251 exp = exp->next;
4252 }
4253 return 0;
4254}
4255
4256
4257
4258/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]4259 * Manage server-side cookies. It can impact performance by about 2% so it is
4260 * desirable to call it only when needed.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4261 */
4262void manage_server_side_cookies(struct session *t, struct buffer *rtr)
4263{
4264 struct http_txn *txn = &t->txn;
4265 char *p1, *p2, *p3, *p4;
4266
4267 appsess *asession_temp = NULL;
4268 appsess local_asession;
4269
4270 char *cur_ptr, *cur_end, *cur_next;
4271 int cur_idx, old_idx, delta;
4272
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4273 /* Iterate through the headers.
4274 * we start with the start line.
4275 */
4276 old_idx = 0;
4277 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4278
4279 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
4280 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4281 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4282
4283 cur_hdr = &txn->hdr_idx.v[cur_idx];
4284 cur_ptr = cur_next;
4285 cur_end = cur_ptr + cur_hdr->len;
4286 cur_next = cur_end + cur_hdr->cr + 1;
4287
4288 /* We have one full header between cur_ptr and cur_end, and the
4289 * next header starts at cur_next. We're only interested in
4290 * "Cookie:" headers.
4291 */
4292
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4293 val = http_header_match2(cur_ptr, cur_end, "Set-Cookie", 10);
4294 if (!val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4295 old_idx = cur_idx;
4296 continue;
4297 }
4298
4299 /* OK, right now we know we have a set-cookie at cur_ptr */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4300 txn->flags |= TX_SCK_ANY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4301
4302
4303 /* maybe we only wanted to see if there was a set-cookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4304 if (t->be->cookie_name == NULL &&
4305 t->be->appsession_name == NULL &&
4306 t->be->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4307 return;
4308
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4309 p1 = cur_ptr + val; /* first non-space char after 'Set-Cookie:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4310
4311 while (p1 < cur_end) { /* in fact, we'll break after the first cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4312 if (p1 == cur_end || *p1 == ';') /* end of cookie */
4313 break;
4314
4315 /* p1 is at the beginning of the cookie name */
4316 p2 = p1;
4317
4318 while (p2 < cur_end && *p2 != '=' && *p2 != ';')
4319 p2++;
4320
4321 if (p2 == cur_end || *p2 == ';') /* next cookie */
4322 break;
4323
4324 p3 = p2 + 1; /* skip the '=' sign */
4325 if (p3 == cur_end)
4326 break;
4327
4328 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4329 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';')
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4330 p4++;
4331
4332 /* here, we have the cookie name between p1 and p2,
4333 * and its value between p3 and p4.
4334 * we can process it.
4335 */
4336
4337 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4338 if (t->be->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4339 txn->srv_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4340 (p4 - p1 >= t->be->capture_namelen) &&
4341 memcmp(p1, t->be->capture_name, t->be->capture_namelen) == 0) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4342 int log_len = p4 - p1;
4343
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]4344 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4345 Alert("HTTP logging : out of memory.\n");
4346 }
4347
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4348 if (log_len > t->be->capture_len)
4349 log_len = t->be->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4350 memcpy(txn->srv_cookie, p1, log_len);
4351 txn->srv_cookie[log_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4352 }
4353
4354 /* now check if we need to process it for persistence */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4355 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4356 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4357 /* Cool... it's the right one */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4358 txn->flags |= TX_SCK_SEEN;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4359
4360 /* If the cookie is in insert mode on a known server, we'll delete
4361 * this occurrence because we'll insert another one later.
4362 * We'll delete it too if the "indirect" option is set and we're in
4363 * a direct access. */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4364 if (((t->srv) && (t->be->options & PR_O_COOK_INS)) ||
4365 ((t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_IND))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4366 /* this header must be deleted */
4367 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4368 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4369 txn->hdr_idx.used--;
4370 cur_hdr->len = 0;
4371 cur_next += delta;
4372 txn->rsp.eoh += delta;
4373
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4374 txn->flags |= TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4375 }
4376 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4377 (t->be->options & PR_O_COOK_RW)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4378 /* replace bytes p3->p4 with the cookie name associated
4379 * with this server since we know it.
4380 */
4381 delta = buffer_replace2(rtr, p3, p4, t->srv->cookie, t->srv->cklen);
4382 cur_hdr->len += delta;
4383 cur_next += delta;
4384 txn->rsp.eoh += delta;
4385
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4386 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4387 }
4388 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4389 (t->be->options & PR_O_COOK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4390 /* insert the cookie name associated with this server
4391 * before existing cookie, and insert a delimitor between them..
4392 */
4393 delta = buffer_replace2(rtr, p3, p3, t->srv->cookie, t->srv->cklen + 1);
4394 cur_hdr->len += delta;
4395 cur_next += delta;
4396 txn->rsp.eoh += delta;
4397
4398 p3[t->srv->cklen] = COOKIE_DELIM;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4399 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4400 }
4401 }
4402 /* next, let's see if the cookie is our appcookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4403 else if ((t->be->appsession_name != NULL) &&
4404 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4405
4406 /* Cool... it's the right one */
4407
4408 size_t server_id_len = strlen(t->srv->id) + 1;
4409 asession_temp = &local_asession;
4410
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4411 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4412 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4413 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4414 return;
4415 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4416 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4417 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4418 asession_temp->serverid = NULL;
4419
4420 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4421 if (appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid) == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4422 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4423 Alert("Not enough Memory process_srv():asession:calloc().\n");
4424 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
4425 return;
4426 }
4427 asession_temp->sessid = local_asession.sessid;
4428 asession_temp->serverid = local_asession.serverid;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4429 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
4430 } else {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4431 /* free wasted memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4432 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4433 }
4434
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4435 if (asession_temp->serverid == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4436 if ((asession_temp->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4437 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4438 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4439 return;
4440 }
4441 asession_temp->serverid[0] = '\0';
4442 }
4443
4444 if (asession_temp->serverid[0] == '\0')
4445 memcpy(asession_temp->serverid, t->srv->id, server_id_len);
4446
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]4447 tv_add(&asession_temp->expire, &now, &t->be->appsession_timeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4448
4449#if defined(DEBUG_HASH)
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4450 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4451#endif
4452 }/* end if ((t->proxy->appsession_name != NULL) ... */
4453 break; /* we don't want to loop again since there cannot be another cookie on the same line */
4454 } /* we're now at the end of the cookie value */
4455
4456 /* keep the link from this header to next one */
4457 old_idx = cur_idx;
4458 } /* end of cookie processing on this header */
4459}
4460
4461
4462
4463/*
4464 * Check if response is cacheable or not. Updates t->flags.
4465 */
4466void check_response_for_cacheability(struct session *t, struct buffer *rtr)
4467{
4468 struct http_txn *txn = &t->txn;
4469 char *p1, *p2;
4470
4471 char *cur_ptr, *cur_end, *cur_next;
4472 int cur_idx;
4473
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]4474 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4475 return;
4476
4477 /* Iterate through the headers.
4478 * we start with the start line.
4479 */
4480 cur_idx = 0;
4481 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4482
4483 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4484 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4485 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4486
4487 cur_hdr = &txn->hdr_idx.v[cur_idx];
4488 cur_ptr = cur_next;
4489 cur_end = cur_ptr + cur_hdr->len;
4490 cur_next = cur_end + cur_hdr->cr + 1;
4491
4492 /* We have one full header between cur_ptr and cur_end, and the
4493 * next header starts at cur_next. We're only interested in
4494 * "Cookie:" headers.
4495 */
4496
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4497 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
4498 if (val) {
4499 if ((cur_end - (cur_ptr + val) >= 8) &&
4500 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
4501 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
4502 return;
4503 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4504 }
4505
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4506 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
4507 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4508 continue;
4509
4510 /* OK, right now we know we have a cache-control header at cur_ptr */
4511
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4512 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4513
4514 if (p1 >= cur_end) /* no more info */
4515 continue;
4516
4517 /* p1 is at the beginning of the value */
4518 p2 = p1;
4519
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4520 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4521 p2++;
4522
4523 /* we have a complete value between p1 and p2 */
4524 if (p2 < cur_end && *p2 == '=') {
4525 /* we have something of the form no-cache="set-cookie" */
4526 if ((cur_end - p1 >= 21) &&
4527 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
4528 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4529 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4530 continue;
4531 }
4532
4533 /* OK, so we know that either p2 points to the end of string or to a comma */
4534 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
4535 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
4536 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
4537 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4538 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4539 return;
4540 }
4541
4542 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4543 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4544 continue;
4545 }
4546 }
4547}
4548
4549
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4550/*
4551 * Try to retrieve a known appsession in the URI, then the associated server.
4552 * If the server is found, it's assigned to the session.
4553 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4554void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4555{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4556 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4557 appsess *asession_temp = NULL;
4558 appsess local_asession;
4559 char *request_line;
4560
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4561 if (t->be->appsession_name == NULL ||
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]4562 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST) ||
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4563 (request_line = memchr(begin, ';', len)) == NULL ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4564 ((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]4565 return;
4566
4567 /* skip ';' */
4568 request_line++;
4569
4570 /* look if we have a jsessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4571 if (strncasecmp(request_line, t->be->appsession_name, t->be->appsession_name_len) != 0)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4572 return;
4573
4574 /* skip jsessionid= */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4575 request_line += t->be->appsession_name_len + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4576
4577 /* First try if we already have an appsession */
4578 asession_temp = &local_asession;
4579
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4580 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4581 Alert("Not enough memory process_cli():asession_temp->sessid:calloc().\n");
4582 send_log(t->be, LOG_ALERT, "Not enough Memory process_cli():asession_temp->sessid:calloc().\n");
4583 return;
4584 }
4585
4586 /* Copy the sessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4587 memcpy(asession_temp->sessid, request_line, t->be->appsession_len);
4588 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4589 asession_temp->serverid = NULL;
4590
4591 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4592 if (appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid) == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4593 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4594 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4595 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4596 Alert("Not enough memory process_cli():asession:calloc().\n");
4597 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4598 return;
4599 }
4600 asession_temp->sessid = local_asession.sessid;
4601 asession_temp->serverid = local_asession.serverid;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4602 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4603 }
4604 else {
4605 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4606 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4607 }
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4608
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]4609 tv_add(&asession_temp->expire, &now, &t->be->appsession_timeout);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4610 asession_temp->request_count++;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4611
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4612#if defined(DEBUG_HASH)
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4613 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4614#endif
4615 if (asession_temp->serverid == NULL) {
4616 Alert("Found Application Session without matching server.\n");
4617 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4618 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4619 while (srv) {
4620 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4621 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4622 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4623 txn->flags &= ~TX_CK_MASK;
4624 txn->flags |= TX_CK_VALID;
4625 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4626 t->srv = srv;
4627 break;
4628 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4629 txn->flags &= ~TX_CK_MASK;
4630 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4631 }
4632 }
4633 srv = srv->next;
4634 }
4635 }
4636}
4637
4638
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4639/*
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4640 * In a GET or HEAD request, check if the requested URI matches the stats uri
4641 * for the current backend, and if an authorization has been passed and is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4642 *
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4643 * 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]4644 * 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]4645 * produce_content() can be called to start sending data.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4646 *
4647 * Returns 1 if the session's state changes, otherwise 0.
4648 */
4649int stats_check_uri_auth(struct session *t, struct proxy *backend)
4650{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4651 struct http_txn *txn = &t->txn;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4652 struct uri_auth *uri_auth = backend->uri_auth;
4653 struct user_auth *user;
4654 int authenticated, cur_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4655 char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4656
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4657 /* check URI size */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4658 if (uri_auth->uri_len > txn->req.sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4659 return 0;
4660
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4661 h = t->req->data + txn->req.sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4662
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4663 /* the URI is in h */
4664 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4665 return 0;
4666
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4667 h += uri_auth->uri_len;
4668 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 3) {
4669 if (memcmp(h, ";up", 3) == 0) {
4670 t->flags |= SN_STAT_HIDEDWN;
4671 break;
4672 }
4673 h++;
4674 }
4675
4676 if (uri_auth->refresh) {
4677 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4678 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 10) {
4679 if (memcmp(h, ";norefresh", 10) == 0) {
4680 t->flags |= SN_STAT_NORFRSH;
4681 break;
4682 }
4683 h++;
4684 }
4685 }
4686
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]4687 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4688 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 4) {
4689 if (memcmp(h, ";csv", 4) == 0) {
4690 t->flags |= SN_STAT_FMTCSV;
4691 break;
4692 }
4693 h++;
4694 }
4695
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4696 /* we are in front of a interceptable URI. Let's check
4697 * if there's an authentication and if it's valid.
4698 */
4699 user = uri_auth->users;
4700 if (!user) {
4701 /* no user auth required, it's OK */
4702 authenticated = 1;
4703 } else {
4704 authenticated = 0;
4705
4706 /* a user list is defined, we have to check.
4707 * skip 21 chars for "Authorization: Basic ".
4708 */
4709
4710 /* FIXME: this should move to an earlier place */
4711 cur_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4712 h = t->req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
4713 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4714 int len = txn->hdr_idx.v[cur_idx].len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4715 if (len > 14 &&
4716 !strncasecmp("Authorization:", h, 14)) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4717 txn->auth_hdr.str = h;
4718 txn->auth_hdr.len = len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4719 break;
4720 }
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4721 h += len + txn->hdr_idx.v[cur_idx].cr + 1;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4722 }
4723
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4724 if (txn->auth_hdr.len < 21 ||
4725 memcmp(txn->auth_hdr.str + 14, " Basic ", 7))
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4726 user = NULL;
4727
4728 while (user) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4729 if ((txn->auth_hdr.len == user->user_len + 14 + 7)
4730 && !memcmp(txn->auth_hdr.str + 14 + 7,
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4731 user->user_pwd, user->user_len)) {
4732 authenticated = 1;
4733 break;
4734 }
4735 user = user->next;
4736 }
4737 }
4738
4739 if (!authenticated) {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4740 struct chunk msg;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4741
4742 /* no need to go further */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4743 msg.str = trash;
4744 msg.len = sprintf(trash, HTTP_401_fmt, uri_auth->auth_realm);
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4745 txn->status = 401;
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4746 client_retnclose(t, &msg);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4747 if (!(t->flags & SN_ERR_MASK))
4748 t->flags |= SN_ERR_PRXCOND;
4749 if (!(t->flags & SN_FINST_MASK))
4750 t->flags |= SN_FINST_R;
4751 return 1;
4752 }
4753
4754 /* The request is valid, the user is authenticate. Let's start sending
4755 * data.
4756 */
4757 t->cli_state = CL_STSHUTR;
4758 t->req->rlim = t->req->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]4759 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4760 t->data_source = DATA_SRC_STATS;
4761 t->data_state = DATA_ST_INIT;
4762 produce_content(t);
4763 return 1;
4764}
4765
4766
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4767/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4768 * Print a debug line with a header
4769 */
4770void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
4771{
4772 int len, max;
4773 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
4774 dir, (unsigned short)t->cli_fd, (unsigned short)t->srv_fd);
4775 max = end - start;
4776 UBOUND(max, sizeof(trash) - len - 1);
4777 len += strlcpy2(trash + len, start, max + 1);
4778 trash[len++] = '\n';
4779 write(1, trash, len);
4780}
4781
4782
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4783/************************************************************************/
4784/* The code below is dedicated to ACL parsing and matching */
4785/************************************************************************/
4786
4787
4788
4789
4790/* 1. Check on METHOD
4791 * We use the pre-parsed method if it is known, and store its number as an
4792 * integer. If it is unknown, we use the pointer and the length.
4793 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4794static int acl_parse_meth(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4795{
4796 int len, meth;
4797
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4798 len = strlen(*text);
4799 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4800
4801 pattern->val.i = meth;
4802 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4803 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4804 if (!pattern->ptr.str)
4805 return 0;
4806 pattern->len = len;
4807 }
4808 return 1;
4809}
4810
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4811static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4812acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, int dir,
4813 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4814{
4815 int meth;
4816 struct http_txn *txn = l7;
4817
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4818 if (txn->req.msg_state != HTTP_MSG_BODY)
4819 return 0;
4820
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4821 meth = txn->meth;
4822 test->i = meth;
4823 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4824 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4825 /* ensure the indexes are not affected */
4826 return 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4827 test->len = txn->req.sl.rq.m_l;
4828 test->ptr = txn->req.sol;
4829 }
4830 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4831 return 1;
4832}
4833
4834static int acl_match_meth(struct acl_test *test, struct acl_pattern *pattern)
4835{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4836 int icase;
4837
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4838 if (test->i != pattern->val.i)
4839 return 0;
4840
4841 if (test->i != HTTP_METH_OTHER)
4842 return 1;
4843
4844 /* Other method, we must compare the strings */
4845 if (pattern->len != test->len)
4846 return 0;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4847
4848 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
4849 if ((icase && strncasecmp(pattern->ptr.str, test->ptr, test->len) != 0) ||
4850 (!icase && strncmp(pattern->ptr.str, test->ptr, test->len) != 0))
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4851 return 0;
4852 return 1;
4853}
4854
4855/* 2. Check on Request/Status Version
4856 * We simply compare strings here.
4857 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4858static int acl_parse_ver(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4859{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4860 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4861 if (!pattern->ptr.str)
4862 return 0;
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4863 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4864 return 1;
4865}
4866
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4867static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4868acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, int dir,
4869 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4870{
4871 struct http_txn *txn = l7;
4872 char *ptr;
4873 int len;
4874
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4875 if (txn->req.msg_state != HTTP_MSG_BODY)
4876 return 0;
4877
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4878 len = txn->req.sl.rq.v_l;
4879 ptr = txn->req.sol + txn->req.sl.rq.v - txn->req.som;
4880
4881 while ((len-- > 0) && (*ptr++ != '/'));
4882 if (len <= 0)
4883 return 0;
4884
4885 test->ptr = ptr;
4886 test->len = len;
4887
4888 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4889 return 1;
4890}
4891
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4892static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4893acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, int dir,
4894 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4895{
4896 struct http_txn *txn = l7;
4897 char *ptr;
4898 int len;
4899
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4900 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4901 return 0;
4902
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4903 len = txn->rsp.sl.st.v_l;
4904 ptr = txn->rsp.sol;
4905
4906 while ((len-- > 0) && (*ptr++ != '/'));
4907 if (len <= 0)
4908 return 0;
4909
4910 test->ptr = ptr;
4911 test->len = len;
4912
4913 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4914 return 1;
4915}
4916
4917/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4918static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4919acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, int dir,
4920 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4921{
4922 struct http_txn *txn = l7;
4923 char *ptr;
4924 int len;
4925
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4926 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4927 return 0;
4928
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4929 len = txn->rsp.sl.st.c_l;
4930 ptr = txn->rsp.sol + txn->rsp.sl.st.c - txn->rsp.som;
4931
4932 test->i = __strl2ui(ptr, len);
4933 test->flags = ACL_TEST_F_VOL_1ST;
4934 return 1;
4935}
4936
4937/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4938static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4939acl_fetch_url(struct proxy *px, struct session *l4, void *l7, int dir,
4940 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4941{
4942 struct http_txn *txn = l7;
4943
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4944 if (txn->req.msg_state != HTTP_MSG_BODY)
4945 return 0;
4946 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4947 /* ensure the indexes are not affected */
4948 return 0;
4949
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4950 test->len = txn->req.sl.rq.u_l;
4951 test->ptr = txn->req.sol + txn->req.sl.rq.u;
4952
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]4953 /* we do not need to set READ_ONLY because the data is in a buffer */
4954 test->flags = ACL_TEST_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4955 return 1;
4956}
4957
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]4958static int
4959acl_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, int dir,
4960 struct acl_expr *expr, struct acl_test *test)
4961{
4962 struct http_txn *txn = l7;
4963
4964 if (txn->req.msg_state != HTTP_MSG_BODY)
4965 return 0;
4966 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4967 /* ensure the indexes are not affected */
4968 return 0;
4969
4970 /* Parse HTTP request */
4971 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
4972 test->ptr = (void *)&((struct sockaddr_in *)&l4->srv_addr)->sin_addr;
4973 test->i = AF_INET;
4974
4975 /*
4976 * If we are parsing url in frontend space, we prepare backend stage
4977 * to not parse again the same url ! optimization lazyness...
4978 */
4979 if (px->options & PR_O_HTTP_PROXY)
4980 l4->flags |= SN_ADDR_SET;
4981
4982 test->flags = ACL_TEST_F_READ_ONLY;
4983 return 1;
4984}
4985
4986static int
4987acl_fetch_url_port(struct proxy *px, struct session *l4, void *l7, int dir,
4988 struct acl_expr *expr, struct acl_test *test)
4989{
4990 struct http_txn *txn = l7;
4991
4992 if (txn->req.msg_state != HTTP_MSG_BODY)
4993 return 0;
4994 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4995 /* ensure the indexes are not affected */
4996 return 0;
4997
4998 /* Same optimization as url_ip */
4999 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
5000 test->i = ntohs(((struct sockaddr_in *)&l4->srv_addr)->sin_port);
5001
5002 if (px->options & PR_O_HTTP_PROXY)
5003 l4->flags |= SN_ADDR_SET;
5004
5005 test->flags = ACL_TEST_F_READ_ONLY;
5006 return 1;
5007}
5008
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5009/* 5. Check on HTTP header. A pointer to the beginning of the value is returned.
5010 * This generic function is used by both acl_fetch_chdr() and acl_fetch_shdr().
5011 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5012static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5013acl_fetch_hdr(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5014 struct acl_expr *expr, struct acl_test *test)
5015{
5016 struct http_txn *txn = l7;
5017 struct hdr_idx *idx = &txn->hdr_idx;
5018 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5019
5020 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5021 /* search for header from the beginning */
5022 ctx->idx = 0;
5023
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5024 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5025 test->flags |= ACL_TEST_F_FETCH_MORE;
5026 test->flags |= ACL_TEST_F_VOL_HDR;
5027 test->len = ctx->vlen;
5028 test->ptr = (char *)ctx->line + ctx->val;
5029 return 1;
5030 }
5031
5032 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5033 test->flags |= ACL_TEST_F_VOL_HDR;
5034 return 0;
5035}
5036
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5037static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5038acl_fetch_chdr(struct proxy *px, struct session *l4, void *l7, int dir,
5039 struct acl_expr *expr, struct acl_test *test)
5040{
5041 struct http_txn *txn = l7;
5042
5043 if (txn->req.msg_state != HTTP_MSG_BODY)
5044 return 0;
5045 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5046 /* ensure the indexes are not affected */
5047 return 0;
5048
5049 return acl_fetch_hdr(px, l4, txn, txn->req.sol, expr, test);
5050}
5051
5052static int
5053acl_fetch_shdr(struct proxy *px, struct session *l4, void *l7, int dir,
5054 struct acl_expr *expr, struct acl_test *test)
5055{
5056 struct http_txn *txn = l7;
5057
5058 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5059 return 0;
5060
5061 return acl_fetch_hdr(px, l4, txn, txn->rsp.sol, expr, test);
5062}
5063
5064/* 6. Check on HTTP header count. The number of occurrences is returned.
5065 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
5066 */
5067static int
5068acl_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5069 struct acl_expr *expr, struct acl_test *test)
5070{
5071 struct http_txn *txn = l7;
5072 struct hdr_idx *idx = &txn->hdr_idx;
5073 struct hdr_ctx ctx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5074 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5075
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5076 ctx.idx = 0;
5077 cnt = 0;
5078 while (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, &ctx))
5079 cnt++;
5080
5081 test->i = cnt;
5082 test->flags = ACL_TEST_F_VOL_HDR;
5083 return 1;
5084}
5085
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5086static int
5087acl_fetch_chdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5088 struct acl_expr *expr, struct acl_test *test)
5089{
5090 struct http_txn *txn = l7;
5091
5092 if (txn->req.msg_state != HTTP_MSG_BODY)
5093 return 0;
5094 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5095 /* ensure the indexes are not affected */
5096 return 0;
5097
5098 return acl_fetch_hdr_cnt(px, l4, txn, txn->req.sol, expr, test);
5099}
5100
5101static int
5102acl_fetch_shdr_cnt(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->rsp.msg_state != HTTP_MSG_BODY)
5108 return 0;
5109
5110 return acl_fetch_hdr_cnt(px, l4, txn, txn->rsp.sol, expr, test);
5111}
5112
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5113/* 7. Check on HTTP header's integer value. The integer value is returned.
5114 * FIXME: the type is 'int', it may not be appropriate for everything.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5115 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5116 */
5117static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5118acl_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5119 struct acl_expr *expr, struct acl_test *test)
5120{
5121 struct http_txn *txn = l7;
5122 struct hdr_idx *idx = &txn->hdr_idx;
5123 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5124
5125 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5126 /* search for header from the beginning */
5127 ctx->idx = 0;
5128
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5129 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5130 test->flags |= ACL_TEST_F_FETCH_MORE;
5131 test->flags |= ACL_TEST_F_VOL_HDR;
5132 test->i = strl2ic((char *)ctx->line + ctx->val, ctx->vlen);
5133 return 1;
5134 }
5135
5136 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5137 test->flags |= ACL_TEST_F_VOL_HDR;
5138 return 0;
5139}
5140
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5141static int
5142acl_fetch_chdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5143 struct acl_expr *expr, struct acl_test *test)
5144{
5145 struct http_txn *txn = l7;
5146
5147 if (txn->req.msg_state != HTTP_MSG_BODY)
5148 return 0;
5149 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5150 /* ensure the indexes are not affected */
5151 return 0;
5152
5153 return acl_fetch_hdr_val(px, l4, txn, txn->req.sol, expr, test);
5154}
5155
5156static int
5157acl_fetch_shdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5158 struct acl_expr *expr, struct acl_test *test)
5159{
5160 struct http_txn *txn = l7;
5161
5162 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5163 return 0;
5164
5165 return acl_fetch_hdr_val(px, l4, txn, txn->rsp.sol, expr, test);
5166}
5167
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5168/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
5169 * the first '/' after the possible hostname, and ends before the possible '?'.
5170 */
5171static int
5172acl_fetch_path(struct proxy *px, struct session *l4, void *l7, int dir,
5173 struct acl_expr *expr, struct acl_test *test)
5174{
5175 struct http_txn *txn = l7;
5176 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5177
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5178 if (txn->req.msg_state != HTTP_MSG_BODY)
5179 return 0;
5180 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5181 /* ensure the indexes are not affected */
5182 return 0;
5183
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5184 ptr = txn->req.sol + txn->req.sl.rq.u;
5185 end = ptr + txn->req.sl.rq.u_l;
5186
5187 if (ptr >= end)
5188 return 0;
5189
5190 /* RFC2616, par. 5.1.2 :
5191 * Request-URI = "*" | absuri | abspath | authority
5192 */
5193
5194 if (*ptr == '*')
5195 return 0;
5196
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]5197 if (isalpha((unsigned char)*ptr)) {
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5198 /* this is a scheme as described by RFC3986, par. 3.1 */
5199 ptr++;
5200 while (ptr < end &&
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]5201 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5202 ptr++;
5203 /* skip '://' */
5204 if (ptr == end || *ptr++ != ':')
5205 return 0;
5206 if (ptr == end || *ptr++ != '/')
5207 return 0;
5208 if (ptr == end || *ptr++ != '/')
5209 return 0;
5210 }
5211 /* skip [user[:passwd]@]host[:[port]] */
5212
5213 while (ptr < end && *ptr != '/')
5214 ptr++;
5215
5216 if (ptr == end)
5217 return 0;
5218
5219 /* OK, we got the '/' ! */
5220 test->ptr = ptr;
5221
5222 while (ptr < end && *ptr != '?')
5223 ptr++;
5224
5225 test->len = ptr - test->ptr;
5226
5227 /* we do not need to set READ_ONLY because the data is in a buffer */
5228 test->flags = ACL_TEST_F_VOL_1ST;
5229 return 1;
5230}
5231
5232
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5233
5234/************************************************************************/
5235/* All supported keywords must be declared here. */
5236/************************************************************************/
5237
5238/* Note: must not be declared <const> as its list will be overwritten */
5239static struct acl_kw_list acl_kws = {{ },{
5240 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth },
5241 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str },
5242 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str },
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5243 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5244
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5245 { "url", acl_parse_str, acl_fetch_url, acl_match_str },
5246 { "url_beg", acl_parse_str, acl_fetch_url, acl_match_beg },
5247 { "url_end", acl_parse_str, acl_fetch_url, acl_match_end },
5248 { "url_sub", acl_parse_str, acl_fetch_url, acl_match_sub },
5249 { "url_dir", acl_parse_str, acl_fetch_url, acl_match_dir },
5250 { "url_dom", acl_parse_str, acl_fetch_url, acl_match_dom },
5251 { "url_reg", acl_parse_reg, acl_fetch_url, acl_match_reg },
5252 { "url_ip", acl_parse_ip, acl_fetch_url_ip, acl_match_ip },
5253 { "url_port", acl_parse_int, acl_fetch_url_port, acl_match_int },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5254
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5255 { "hdr", acl_parse_str, acl_fetch_chdr, acl_match_str },
5256 { "hdr_reg", acl_parse_reg, acl_fetch_chdr, acl_match_reg },
5257 { "hdr_beg", acl_parse_str, acl_fetch_chdr, acl_match_beg },
5258 { "hdr_end", acl_parse_str, acl_fetch_chdr, acl_match_end },
5259 { "hdr_sub", acl_parse_str, acl_fetch_chdr, acl_match_sub },
5260 { "hdr_dir", acl_parse_str, acl_fetch_chdr, acl_match_dir },
5261 { "hdr_dom", acl_parse_str, acl_fetch_chdr, acl_match_dom },
5262 { "hdr_cnt", acl_parse_int, acl_fetch_chdr_cnt,acl_match_int },
5263 { "hdr_val", acl_parse_int, acl_fetch_chdr_val,acl_match_int },
5264
5265 { "shdr", acl_parse_str, acl_fetch_shdr, acl_match_str },
5266 { "shdr_reg", acl_parse_reg, acl_fetch_shdr, acl_match_reg },
5267 { "shdr_beg", acl_parse_str, acl_fetch_shdr, acl_match_beg },
5268 { "shdr_end", acl_parse_str, acl_fetch_shdr, acl_match_end },
5269 { "shdr_sub", acl_parse_str, acl_fetch_shdr, acl_match_sub },
5270 { "shdr_dir", acl_parse_str, acl_fetch_shdr, acl_match_dir },
5271 { "shdr_dom", acl_parse_str, acl_fetch_shdr, acl_match_dom },
5272 { "shdr_cnt", acl_parse_int, acl_fetch_shdr_cnt,acl_match_int },
5273 { "shdr_val", acl_parse_int, acl_fetch_shdr_val,acl_match_int },
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5274
5275 { "path", acl_parse_str, acl_fetch_path, acl_match_str },
5276 { "path_reg", acl_parse_reg, acl_fetch_path, acl_match_reg },
5277 { "path_beg", acl_parse_str, acl_fetch_path, acl_match_beg },
5278 { "path_end", acl_parse_str, acl_fetch_path, acl_match_end },
5279 { "path_sub", acl_parse_str, acl_fetch_path, acl_match_sub },
5280 { "path_dir", acl_parse_str, acl_fetch_path, acl_match_dir },
5281 { "path_dom", acl_parse_str, acl_fetch_path, acl_match_dom },
5282
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]5283 { NULL, NULL, NULL, NULL },
5284
5285#if 0
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5286 { "line", acl_parse_str, acl_fetch_line, acl_match_str },
5287 { "line_reg", acl_parse_reg, acl_fetch_line, acl_match_reg },
5288 { "line_beg", acl_parse_str, acl_fetch_line, acl_match_beg },
5289 { "line_end", acl_parse_str, acl_fetch_line, acl_match_end },
5290 { "line_sub", acl_parse_str, acl_fetch_line, acl_match_sub },
5291 { "line_dir", acl_parse_str, acl_fetch_line, acl_match_dir },
5292 { "line_dom", acl_parse_str, acl_fetch_line, acl_match_dom },
5293
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5294 { "cook", acl_parse_str, acl_fetch_cook, acl_match_str },
5295 { "cook_reg", acl_parse_reg, acl_fetch_cook, acl_match_reg },
5296 { "cook_beg", acl_parse_str, acl_fetch_cook, acl_match_beg },
5297 { "cook_end", acl_parse_str, acl_fetch_cook, acl_match_end },
5298 { "cook_sub", acl_parse_str, acl_fetch_cook, acl_match_sub },
5299 { "cook_dir", acl_parse_str, acl_fetch_cook, acl_match_dir },
5300 { "cook_dom", acl_parse_str, acl_fetch_cook, acl_match_dom },
5301 { "cook_pst", acl_parse_none, acl_fetch_cook, acl_match_pst },
5302
5303 { "auth_user", acl_parse_str, acl_fetch_user, acl_match_str },
5304 { "auth_regex", acl_parse_reg, acl_fetch_user, acl_match_reg },
5305 { "auth_clear", acl_parse_str, acl_fetch_auth, acl_match_str },
5306 { "auth_md5", acl_parse_str, acl_fetch_auth, acl_match_md5 },
5307 { NULL, NULL, NULL, NULL },
5308#endif
5309}};
5310
5311
5312__attribute__((constructor))
5313static void __http_protocol_init(void)
5314{
5315 acl_register_keywords(&acl_kws);
5316}
5317
5318
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5319/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5320 * Local variables:
5321 * c-indent-level: 8
5322 * c-basic-offset: 8
5323 * End:
5324 */