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git01.mediatek.com / haproxy / 8b3977ffe36190e45fb974bf813bfbd935ac99a1 / . / src / proto_http.c
blob: e3723c1b889256e140f339c389d3c7deb0a90163 [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 tv_min(&t->expire, &s->req->rex, &s->req->wex);
624 tv_bound(&t->expire, &s->req->cex);
625 tv_bound(&t->expire, &s->rep->rex);
626 tv_bound(&t->expire, &s->rep->wex);
Willy Tarreau036fae02008-01-06 13:24:40 +0100[diff] [blame]627 if (s->cli_state == CL_STHEADERS)
628 tv_bound(&t->expire, &s->txn.exp);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]629
630 /* restore t to its place in the task list */
631 task_queue(t);
632
633#ifdef DEBUG_FULL
634 /* DEBUG code : this should never ever happen, otherwise it indicates
635 * that a task still has something to do and will provoke a quick loop.
636 */
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]637 if (tv_remain2(&now, &t->expire) <= 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]638 exit(100);
639#endif
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]640 *next = t->expire;
641 return; /* nothing more to do */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]642 }
643
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]644 s->fe->feconn--;
645 if (s->flags & SN_BE_ASSIGNED)
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]646 s->be->beconn--;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]647 actconn--;
648
Willy Tarreauf41d4b12007-04-28 23:26:14 +0200[diff] [blame]649 if (unlikely((global.mode & MODE_DEBUG) &&
650 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]651 int len;
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]652 len = sprintf(trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]653 s->uniq_id, s->be->id,
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]654 (unsigned short)s->cli_fd, (unsigned short)s->srv_fd);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]655 write(1, trash, len);
656 }
657
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]658 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Krzysztof Piotr Oledzki583bc962007-11-24 22:12:47 +0100[diff] [blame]659 session_process_counters(s);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]660
661 /* let's do a final log if we need it */
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]662 if (s->logs.logwait &&
663 !(s->flags & SN_MONITOR) &&
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]664 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
665 if (s->fe->to_log & LW_REQ)
666 http_sess_log(s);
667 else
668 tcp_sess_log(s);
669 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]670
671 /* the task MUST not be in the run queue anymore */
672 task_delete(t);
673 session_free(s);
674 task_free(t);
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]675 tv_eternity(next);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]676}
677
678
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]679extern const char sess_term_cond[8];
680extern const char sess_fin_state[8];
681extern const char *monthname[12];
682const char sess_cookie[4] = "NIDV"; /* No cookie, Invalid cookie, cookie for a Down server, Valid cookie */
683const char sess_set_cookie[8] = "N1I3PD5R"; /* No set-cookie, unknown, Set-Cookie Inserted, unknown,
684 Set-cookie seen and left unchanged (passive), Set-cookie Deleted,
685 unknown, Set-cookie Rewritten */
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]686struct pool_head *pool2_requri;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]687struct pool_head *pool2_capture;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]688
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]689/*
690 * send a log for the session when we have enough info about it.
691 * Will not log if the frontend has no log defined.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]692 */
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]693static void http_sess_log(struct session *s)
694{
695 char pn[INET6_ADDRSTRLEN + strlen(":65535")];
696 struct proxy *fe = s->fe;
697 struct proxy *be = s->be;
698 struct proxy *prx_log;
699 struct http_txn *txn = &s->txn;
700 int tolog;
701 char *uri, *h;
702 char *svid;
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]703 struct tm tm;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]704 static char tmpline[MAX_SYSLOG_LEN];
705 int hdr;
706
707 if (fe->logfac1 < 0 && fe->logfac2 < 0)
708 return;
709 prx_log = fe;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]710
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]711 if (s->cli_addr.ss_family == AF_INET)
712 inet_ntop(AF_INET,
713 (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
714 pn, sizeof(pn));
715 else
716 inet_ntop(AF_INET6,
717 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
718 pn, sizeof(pn));
719
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]720 get_localtime(s->logs.tv_accept.tv_sec, &tm);
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]721
722 /* FIXME: let's limit ourselves to frontend logging for now. */
723 tolog = fe->to_log;
724
725 h = tmpline;
726 if (fe->to_log & LW_REQHDR &&
727 txn->req.cap &&
728 (h < tmpline + sizeof(tmpline) - 10)) {
729 *(h++) = ' ';
730 *(h++) = '{';
731 for (hdr = 0; hdr < fe->nb_req_cap; hdr++) {
732 if (hdr)
733 *(h++) = '|';
734 if (txn->req.cap[hdr] != NULL)
735 h = encode_string(h, tmpline + sizeof(tmpline) - 7,
736 '#', hdr_encode_map, txn->req.cap[hdr]);
737 }
738 *(h++) = '}';
739 }
740
741 if (fe->to_log & LW_RSPHDR &&
742 txn->rsp.cap &&
743 (h < tmpline + sizeof(tmpline) - 7)) {
744 *(h++) = ' ';
745 *(h++) = '{';
746 for (hdr = 0; hdr < fe->nb_rsp_cap; hdr++) {
747 if (hdr)
748 *(h++) = '|';
749 if (txn->rsp.cap[hdr] != NULL)
750 h = encode_string(h, tmpline + sizeof(tmpline) - 4,
751 '#', hdr_encode_map, txn->rsp.cap[hdr]);
752 }
753 *(h++) = '}';
754 }
755
756 if (h < tmpline + sizeof(tmpline) - 4) {
757 *(h++) = ' ';
758 *(h++) = '"';
759 uri = txn->uri ? txn->uri : "<BADREQ>";
760 h = encode_string(h, tmpline + sizeof(tmpline) - 1,
761 '#', url_encode_map, uri);
762 *(h++) = '"';
763 }
764 *h = '\0';
765
766 svid = (tolog & LW_SVID) ?
767 (s->data_source != DATA_SRC_STATS) ?
768 (s->srv != NULL) ? s->srv->id : "<NOSRV>" : "<STATS>" : "-";
769
770 send_log(prx_log, LOG_INFO,
771 "%s:%d [%02d/%s/%04d:%02d:%02d:%02d.%03d]"
772 " %s %s/%s %d/%d/%d/%d/%s%d %d %s%lld"
Krzysztof Piotr Oledzki25b501a2008-01-06 16:36:16 +0100[diff] [blame]773 " %s %s %c%c%c%c %d/%d/%d/%d/%s%u %d/%d%s\n",
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]774 pn,
775 (s->cli_addr.ss_family == AF_INET) ?
776 ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port) :
777 ntohs(((struct sockaddr_in6 *)&s->cli_addr)->sin6_port),
Willy Tarreaufe944602007-10-25 10:34:16 +0200[diff] [blame]778 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
779 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]780 fe->id, be->id, svid,
781 s->logs.t_request,
782 (s->logs.t_queue >= 0) ? s->logs.t_queue - s->logs.t_request : -1,
783 (s->logs.t_connect >= 0) ? s->logs.t_connect - s->logs.t_queue : -1,
784 (s->logs.t_data >= 0) ? s->logs.t_data - s->logs.t_connect : -1,
785 (tolog & LW_BYTES) ? "" : "+", s->logs.t_close,
786 txn->status,
Willy Tarreau8b3977f2008-01-18 11:16:32 +0100[diff] [blame^]787 (tolog & LW_BYTES) ? "" : "+", s->logs.bytes_out,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]788 txn->cli_cookie ? txn->cli_cookie : "-",
789 txn->srv_cookie ? txn->srv_cookie : "-",
790 sess_term_cond[(s->flags & SN_ERR_MASK) >> SN_ERR_SHIFT],
791 sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_FINST_SHIFT],
792 (be->options & PR_O_COOK_ANY) ? sess_cookie[(txn->flags & TX_CK_MASK) >> TX_CK_SHIFT] : '-',
793 (be->options & PR_O_COOK_ANY) ? sess_set_cookie[(txn->flags & TX_SCK_MASK) >> TX_SCK_SHIFT] : '-',
794 actconn, fe->feconn, be->beconn, s->srv ? s->srv->cur_sess : 0,
Krzysztof Piotr Oledzki25b501a2008-01-06 16:36:16 +0100[diff] [blame]795 (s->flags & SN_REDISP)?"+":"",
796 (s->conn_retries>0)?(be->conn_retries - s->conn_retries):be->conn_retries,
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]797 s->logs.srv_queue_size, s->logs.prx_queue_size, tmpline);
798
799 s->logs.logwait = 0;
800}
801
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]802
803/*
804 * Capture headers from message starting at <som> according to header list
805 * <cap_hdr>, and fill the <idx> structure appropriately.
806 */
807void capture_headers(char *som, struct hdr_idx *idx,
808 char **cap, struct cap_hdr *cap_hdr)
809{
810 char *eol, *sol, *col, *sov;
811 int cur_idx;
812 struct cap_hdr *h;
813 int len;
814
815 sol = som + hdr_idx_first_pos(idx);
816 cur_idx = hdr_idx_first_idx(idx);
817
818 while (cur_idx) {
819 eol = sol + idx->v[cur_idx].len;
820
821 col = sol;
822 while (col < eol && *col != ':')
823 col++;
824
825 sov = col + 1;
826 while (sov < eol && http_is_lws[(unsigned char)*sov])
827 sov++;
828
829 for (h = cap_hdr; h; h = h->next) {
830 if ((h->namelen == col - sol) &&
831 (strncasecmp(sol, h->name, h->namelen) == 0)) {
832 if (cap[h->index] == NULL)
833 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]834 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]835
836 if (cap[h->index] == NULL) {
837 Alert("HTTP capture : out of memory.\n");
838 continue;
839 }
840
841 len = eol - sov;
842 if (len > h->len)
843 len = h->len;
844
845 memcpy(cap[h->index], sov, len);
846 cap[h->index][len]=0;
847 }
848 }
849 sol = eol + idx->v[cur_idx].cr + 1;
850 cur_idx = idx->v[cur_idx].next;
851 }
852}
853
854
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]855/* either we find an LF at <ptr> or we jump to <bad>.
856 */
857#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
858
859/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
860 * otherwise to <http_msg_ood> with <state> set to <st>.
861 */
862#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
863 ptr++; \
864 if (likely(ptr < end)) \
865 goto good; \
866 else { \
867 state = (st); \
868 goto http_msg_ood; \
869 } \
870 } while (0)
871
872
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]873/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]874 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]875 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
876 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
877 * will give undefined results.
878 * Note that it is upon the caller's responsibility to ensure that ptr < end,
879 * and that msg->sol points to the beginning of the response.
880 * If a complete line is found (which implies that at least one CR or LF is
881 * found before <end>, the updated <ptr> is returned, otherwise NULL is
882 * returned indicating an incomplete line (which does not mean that parts have
883 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
884 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
885 * upon next call.
886 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]887 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]888 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
889 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]890 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]891 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]892const char *http_parse_stsline(struct http_msg *msg, const char *msg_buf, int state,
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]893 const char *ptr, const char *end,
894 char **ret_ptr, int *ret_state)
895{
896 __label__
897 http_msg_rpver,
898 http_msg_rpver_sp,
899 http_msg_rpcode,
900 http_msg_rpcode_sp,
901 http_msg_rpreason,
902 http_msg_rpline_eol,
903 http_msg_ood, /* out of data */
904 http_msg_invalid;
905
906 switch (state) {
907 http_msg_rpver:
908 case HTTP_MSG_RPVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]909 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]910 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
911
912 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]913 msg->sl.st.v_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]914 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
915 }
916 goto http_msg_invalid;
917
918 http_msg_rpver_sp:
919 case HTTP_MSG_RPVER_SP:
920 if (likely(!HTTP_IS_LWS(*ptr))) {
921 msg->sl.st.c = ptr - msg_buf;
922 goto http_msg_rpcode;
923 }
924 if (likely(HTTP_IS_SPHT(*ptr)))
925 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
926 /* so it's a CR/LF, this is invalid */
927 goto http_msg_invalid;
928
929 http_msg_rpcode:
930 case HTTP_MSG_RPCODE:
931 if (likely(!HTTP_IS_LWS(*ptr)))
932 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
933
934 if (likely(HTTP_IS_SPHT(*ptr))) {
935 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
936 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
937 }
938
939 /* so it's a CR/LF, so there is no reason phrase */
940 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
941 http_msg_rsp_reason:
942 /* FIXME: should we support HTTP responses without any reason phrase ? */
943 msg->sl.st.r = ptr - msg_buf;
944 msg->sl.st.r_l = 0;
945 goto http_msg_rpline_eol;
946
947 http_msg_rpcode_sp:
948 case HTTP_MSG_RPCODE_SP:
949 if (likely(!HTTP_IS_LWS(*ptr))) {
950 msg->sl.st.r = ptr - msg_buf;
951 goto http_msg_rpreason;
952 }
953 if (likely(HTTP_IS_SPHT(*ptr)))
954 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
955 /* so it's a CR/LF, so there is no reason phrase */
956 goto http_msg_rsp_reason;
957
958 http_msg_rpreason:
959 case HTTP_MSG_RPREASON:
960 if (likely(!HTTP_IS_CRLF(*ptr)))
961 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
962 msg->sl.st.r_l = (ptr - msg_buf) - msg->sl.st.r;
963 http_msg_rpline_eol:
964 /* We have seen the end of line. Note that we do not
965 * necessarily have the \n yet, but at least we know that we
966 * have EITHER \r OR \n, otherwise the response would not be
967 * complete. We can then record the response length and return
968 * to the caller which will be able to register it.
969 */
970 msg->sl.st.l = ptr - msg->sol;
971 return ptr;
972
973#ifdef DEBUG_FULL
974 default:
975 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
976 exit(1);
977#endif
978 }
979
980 http_msg_ood:
981 /* out of data */
982 if (ret_state)
983 *ret_state = state;
984 if (ret_ptr)
985 *ret_ptr = (char *)ptr;
986 return NULL;
987
988 http_msg_invalid:
989 /* invalid message */
990 if (ret_state)
991 *ret_state = HTTP_MSG_ERROR;
992 return NULL;
993}
994
995
996/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]997 * This function parses a request line between <ptr> and <end>, starting with
998 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
999 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1000 * will give undefined results.
1001 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1002 * and that msg->sol points to the beginning of the request.
1003 * If a complete line is found (which implies that at least one CR or LF is
1004 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1005 * returned indicating an incomplete line (which does not mean that parts have
1006 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1007 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1008 * upon next call.
1009 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1010 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1011 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1012 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1013 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1014 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1015const char *http_parse_reqline(struct http_msg *msg, const char *msg_buf, int state,
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1016 const char *ptr, const char *end,
1017 char **ret_ptr, int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1018{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1019 __label__
1020 http_msg_rqmeth,
1021 http_msg_rqmeth_sp,
1022 http_msg_rquri,
1023 http_msg_rquri_sp,
1024 http_msg_rqver,
1025 http_msg_rqline_eol,
1026 http_msg_ood, /* out of data */
1027 http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1028
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1029 switch (state) {
1030 http_msg_rqmeth:
1031 case HTTP_MSG_RQMETH:
1032 if (likely(HTTP_IS_TOKEN(*ptr)))
1033 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1034
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1035 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1036 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1037 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1038 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1039
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1040 if (likely(HTTP_IS_CRLF(*ptr))) {
1041 /* HTTP 0.9 request */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1042 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1043 http_msg_req09_uri:
1044 msg->sl.rq.u = ptr - msg_buf;
1045 http_msg_req09_uri_e:
1046 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1047 http_msg_req09_ver:
1048 msg->sl.rq.v = ptr - msg_buf;
1049 msg->sl.rq.v_l = 0;
1050 goto http_msg_rqline_eol;
1051 }
1052 goto http_msg_invalid;
1053
1054 http_msg_rqmeth_sp:
1055 case HTTP_MSG_RQMETH_SP:
1056 if (likely(!HTTP_IS_LWS(*ptr))) {
1057 msg->sl.rq.u = ptr - msg_buf;
1058 goto http_msg_rquri;
1059 }
1060 if (likely(HTTP_IS_SPHT(*ptr)))
1061 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1062 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1063 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1064
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1065 http_msg_rquri:
1066 case HTTP_MSG_RQURI:
1067 if (likely(!HTTP_IS_LWS(*ptr)))
1068 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1069
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1070 if (likely(HTTP_IS_SPHT(*ptr))) {
1071 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1072 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1073 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1074
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1075 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1076 goto http_msg_req09_uri_e;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1077
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1078 http_msg_rquri_sp:
1079 case HTTP_MSG_RQURI_SP:
1080 if (likely(!HTTP_IS_LWS(*ptr))) {
1081 msg->sl.rq.v = ptr - msg_buf;
1082 goto http_msg_rqver;
1083 }
1084 if (likely(HTTP_IS_SPHT(*ptr)))
1085 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1086 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1087 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1088
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1089 http_msg_rqver:
1090 case HTTP_MSG_RQVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1091 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1092 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1093
1094 if (likely(HTTP_IS_CRLF(*ptr))) {
1095 msg->sl.rq.v_l = (ptr - msg_buf) - msg->sl.rq.v;
1096 http_msg_rqline_eol:
1097 /* We have seen the end of line. Note that we do not
1098 * necessarily have the \n yet, but at least we know that we
1099 * have EITHER \r OR \n, otherwise the request would not be
1100 * complete. We can then record the request length and return
1101 * to the caller which will be able to register it.
1102 */
1103 msg->sl.rq.l = ptr - msg->sol;
1104 return ptr;
1105 }
1106
1107 /* neither an HTTP_VER token nor a CRLF */
1108 goto http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1109
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1110#ifdef DEBUG_FULL
1111 default:
1112 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1113 exit(1);
1114#endif
1115 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1116
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1117 http_msg_ood:
1118 /* out of data */
1119 if (ret_state)
1120 *ret_state = state;
1121 if (ret_ptr)
1122 *ret_ptr = (char *)ptr;
1123 return NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1124
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1125 http_msg_invalid:
1126 /* invalid message */
1127 if (ret_state)
1128 *ret_state = HTTP_MSG_ERROR;
1129 return NULL;
1130}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1131
1132
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1133/*
1134 * This function parses an HTTP message, either a request or a response,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1135 * depending on the initial msg->msg_state. It can be preempted everywhere
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1136 * when data are missing and recalled at the exact same location with no
1137 * information loss. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1138 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
1139 * fields.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1140 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1141void http_msg_analyzer(struct buffer *buf, struct http_msg *msg, struct hdr_idx *idx)
1142{
1143 __label__
1144 http_msg_rqbefore,
1145 http_msg_rqbefore_cr,
1146 http_msg_rqmeth,
1147 http_msg_rqline_end,
1148 http_msg_hdr_first,
1149 http_msg_hdr_name,
1150 http_msg_hdr_l1_sp,
1151 http_msg_hdr_l1_lf,
1152 http_msg_hdr_l1_lws,
1153 http_msg_hdr_val,
1154 http_msg_hdr_l2_lf,
1155 http_msg_hdr_l2_lws,
1156 http_msg_complete_header,
1157 http_msg_last_lf,
1158 http_msg_ood, /* out of data */
1159 http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1160
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1161 int state; /* updated only when leaving the FSM */
1162 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1163
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1164 state = msg->msg_state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1165 ptr = buf->lr;
1166 end = buf->r;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1167
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1168 if (unlikely(ptr >= end))
1169 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1170
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1171 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1172 /*
1173 * First, states that are specific to the response only.
1174 * We check them first so that request and headers are
1175 * closer to each other (accessed more often).
1176 */
1177 http_msg_rpbefore:
1178 case HTTP_MSG_RPBEFORE:
1179 if (likely(HTTP_IS_TOKEN(*ptr))) {
1180 if (likely(ptr == buf->data)) {
1181 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1182 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1183 } else {
1184#if PARSE_PRESERVE_EMPTY_LINES
1185 /* only skip empty leading lines, don't remove them */
1186 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1187 msg->som = ptr - buf->data;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1188#else
1189 /* Remove empty leading lines, as recommended by
1190 * RFC2616. This takes a lot of time because we
1191 * must move all the buffer backwards, but this
1192 * is rarely needed. The method above will be
1193 * cleaner when we'll be able to start sending
1194 * the request from any place in the buffer.
1195 */
1196 buf->lr = ptr;
1197 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1198 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1199 msg->sol = buf->data;
1200 ptr = buf->data;
1201 end = buf->r;
1202#endif
1203 }
1204 hdr_idx_init(idx);
1205 state = HTTP_MSG_RPVER;
1206 goto http_msg_rpver;
1207 }
1208
1209 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1210 goto http_msg_invalid;
1211
1212 if (unlikely(*ptr == '\n'))
1213 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1214 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1215 /* stop here */
1216
1217 http_msg_rpbefore_cr:
1218 case HTTP_MSG_RPBEFORE_CR:
1219 EXPECT_LF_HERE(ptr, http_msg_invalid);
1220 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1221 /* stop here */
1222
1223 http_msg_rpver:
1224 case HTTP_MSG_RPVER:
1225 case HTTP_MSG_RPVER_SP:
1226 case HTTP_MSG_RPCODE:
1227 case HTTP_MSG_RPCODE_SP:
1228 case HTTP_MSG_RPREASON:
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1229 ptr = (char *)http_parse_stsline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1230 &buf->lr, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1231 if (unlikely(!ptr))
1232 return;
1233
1234 /* we have a full response and we know that we have either a CR
1235 * or an LF at <ptr>.
1236 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1237 //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]1238 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1239
1240 msg->sol = ptr;
1241 if (likely(*ptr == '\r'))
1242 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1243 goto http_msg_rpline_end;
1244
1245 http_msg_rpline_end:
1246 case HTTP_MSG_RPLINE_END:
1247 /* msg->sol must point to the first of CR or LF. */
1248 EXPECT_LF_HERE(ptr, http_msg_invalid);
1249 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1250 /* stop here */
1251
1252 /*
1253 * Second, states that are specific to the request only
1254 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1255 http_msg_rqbefore:
1256 case HTTP_MSG_RQBEFORE:
1257 if (likely(HTTP_IS_TOKEN(*ptr))) {
1258 if (likely(ptr == buf->data)) {
1259 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1260 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1261 } else {
1262#if PARSE_PRESERVE_EMPTY_LINES
1263 /* only skip empty leading lines, don't remove them */
1264 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1265 msg->som = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1266#else
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1267 /* Remove empty leading lines, as recommended by
1268 * RFC2616. This takes a lot of time because we
1269 * must move all the buffer backwards, but this
1270 * is rarely needed. The method above will be
1271 * cleaner when we'll be able to start sending
1272 * the request from any place in the buffer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1273 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1274 buf->lr = ptr;
1275 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1276 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1277 msg->sol = buf->data;
1278 ptr = buf->data;
1279 end = buf->r;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1280#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1281 }
Willy Tarreauf0d058e2007-01-25 12:03:42 +0100[diff] [blame]1282 /* we will need this when keep-alive will be supported
1283 hdr_idx_init(idx);
1284 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1285 state = HTTP_MSG_RQMETH;
1286 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1287 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1288
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1289 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1290 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1291
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1292 if (unlikely(*ptr == '\n'))
1293 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1294 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1295 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1296
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1297 http_msg_rqbefore_cr:
1298 case HTTP_MSG_RQBEFORE_CR:
1299 EXPECT_LF_HERE(ptr, http_msg_invalid);
1300 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1301 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1302
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1303 http_msg_rqmeth:
1304 case HTTP_MSG_RQMETH:
1305 case HTTP_MSG_RQMETH_SP:
1306 case HTTP_MSG_RQURI:
1307 case HTTP_MSG_RQURI_SP:
1308 case HTTP_MSG_RQVER:
1309 ptr = (char *)http_parse_reqline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1310 &buf->lr, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1311 if (unlikely(!ptr))
1312 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1313
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1314 /* we have a full request and we know that we have either a CR
1315 * or an LF at <ptr>.
1316 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1317 //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]1318 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1319
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1320 msg->sol = ptr;
1321 if (likely(*ptr == '\r'))
1322 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1323 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1324
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1325 http_msg_rqline_end:
1326 case HTTP_MSG_RQLINE_END:
1327 /* check for HTTP/0.9 request : no version information available.
1328 * msg->sol must point to the first of CR or LF.
1329 */
1330 if (unlikely(msg->sl.rq.v_l == 0))
1331 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1332
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1333 EXPECT_LF_HERE(ptr, http_msg_invalid);
1334 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1335 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1336
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1337 /*
1338 * Common states below
1339 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1340 http_msg_hdr_first:
1341 case HTTP_MSG_HDR_FIRST:
1342 msg->sol = ptr;
1343 if (likely(!HTTP_IS_CRLF(*ptr))) {
1344 goto http_msg_hdr_name;
1345 }
1346
1347 if (likely(*ptr == '\r'))
1348 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1349 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1350
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1351 http_msg_hdr_name:
1352 case HTTP_MSG_HDR_NAME:
1353 /* assumes msg->sol points to the first char */
1354 if (likely(HTTP_IS_TOKEN(*ptr)))
1355 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1356
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1357 if (likely(*ptr == ':')) {
1358 msg->col = ptr - buf->data;
1359 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
1360 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1361
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1362 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1363
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1364 http_msg_hdr_l1_sp:
1365 case HTTP_MSG_HDR_L1_SP:
1366 /* assumes msg->sol points to the first char and msg->col to the colon */
1367 if (likely(HTTP_IS_SPHT(*ptr)))
1368 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]1369
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1370 /* header value can be basically anything except CR/LF */
1371 msg->sov = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1372
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1373 if (likely(!HTTP_IS_CRLF(*ptr))) {
1374 goto http_msg_hdr_val;
1375 }
1376
1377 if (likely(*ptr == '\r'))
1378 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1379 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1380
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1381 http_msg_hdr_l1_lf:
1382 case HTTP_MSG_HDR_L1_LF:
1383 EXPECT_LF_HERE(ptr, http_msg_invalid);
1384 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]1385
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1386 http_msg_hdr_l1_lws:
1387 case HTTP_MSG_HDR_L1_LWS:
1388 if (likely(HTTP_IS_SPHT(*ptr))) {
1389 /* replace HT,CR,LF with spaces */
1390 for (; buf->data+msg->sov < ptr; msg->sov++)
1391 buf->data[msg->sov] = ' ';
1392 goto http_msg_hdr_l1_sp;
1393 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1394 /* we had a header consisting only in spaces ! */
1395 msg->eol = buf->data + msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1396 goto http_msg_complete_header;
1397
1398 http_msg_hdr_val:
1399 case HTTP_MSG_HDR_VAL:
1400 /* assumes msg->sol points to the first char, msg->col to the
1401 * colon, and msg->sov points to the first character of the
1402 * value.
1403 */
1404 if (likely(!HTTP_IS_CRLF(*ptr)))
1405 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1406
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1407 msg->eol = ptr;
1408 /* Note: we could also copy eol into ->eoh so that we have the
1409 * real header end in case it ends with lots of LWS, but is this
1410 * really needed ?
1411 */
1412 if (likely(*ptr == '\r'))
1413 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1414 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1415
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1416 http_msg_hdr_l2_lf:
1417 case HTTP_MSG_HDR_L2_LF:
1418 EXPECT_LF_HERE(ptr, http_msg_invalid);
1419 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]1420
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1421 http_msg_hdr_l2_lws:
1422 case HTTP_MSG_HDR_L2_LWS:
1423 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1424 /* LWS: replace HT,CR,LF with spaces */
1425 for (; msg->eol < ptr; msg->eol++)
1426 *msg->eol = ' ';
1427 goto http_msg_hdr_val;
1428 }
1429 http_msg_complete_header:
1430 /*
1431 * It was a new header, so the last one is finished.
1432 * Assumes msg->sol points to the first char, msg->col to the
1433 * colon, msg->sov points to the first character of the value
1434 * and msg->eol to the first CR or LF so we know how the line
1435 * ends. We insert last header into the index.
1436 */
1437 /*
1438 fprintf(stderr,"registering %-2d bytes : ", msg->eol - msg->sol);
1439 write(2, msg->sol, msg->eol-msg->sol);
1440 fprintf(stderr,"\n");
1441 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1442
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1443 if (unlikely(hdr_idx_add(msg->eol - msg->sol, *msg->eol == '\r',
1444 idx, idx->tail) < 0))
1445 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1446
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1447 msg->sol = ptr;
1448 if (likely(!HTTP_IS_CRLF(*ptr))) {
1449 goto http_msg_hdr_name;
1450 }
1451
1452 if (likely(*ptr == '\r'))
1453 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1454 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1455
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1456 http_msg_last_lf:
1457 case HTTP_MSG_LAST_LF:
1458 /* Assumes msg->sol points to the first of either CR or LF */
1459 EXPECT_LF_HERE(ptr, http_msg_invalid);
1460 ptr++;
1461 buf->lr = ptr;
1462 msg->eoh = msg->sol - buf->data;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1463 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1464 return;
1465#ifdef DEBUG_FULL
1466 default:
1467 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1468 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1469#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1470 }
1471 http_msg_ood:
1472 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1473 msg->msg_state = state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1474 buf->lr = ptr;
1475 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1476
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1477 http_msg_invalid:
1478 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1479 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1480 return;
1481}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1482
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1483/*
1484 * manages the client FSM and its socket. BTW, it also tries to handle the
1485 * cookie. It returns 1 if a state has changed (and a resync may be needed),
1486 * 0 else.
1487 */
1488int process_cli(struct session *t)
1489{
1490 int s = t->srv_state;
1491 int c = t->cli_state;
1492 struct buffer *req = t->req;
1493 struct buffer *rep = t->rep;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1494
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1495 DPRINTF(stderr,"process_cli: c=%s s=%s set(r,w)=%d,%d exp(r,w)=%d.%d,%d.%d\n",
1496 cli_stnames[c], srv_stnames[s],
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1497 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]1498 req->rex.tv_sec, req->rex.tv_usec,
1499 rep->wex.tv_sec, rep->wex.tv_usec);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1500
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1501 if (c == CL_STHEADERS) {
1502 /*
1503 * Now parse the partial (or complete) lines.
1504 * We will check the request syntax, and also join multi-line
1505 * headers. An index of all the lines will be elaborated while
1506 * parsing.
1507 *
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1508 * For the parsing, we use a 28 states FSM.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1509 *
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1510 * Here is the information we currently have :
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1511 * req->data + req->som = beginning of request
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1512 * req->data + req->eoh = end of processed headers / start of current one
1513 * req->data + req->eol = end of current header or line (LF or CRLF)
1514 * req->lr = first non-visited byte
1515 * req->r = end of data
1516 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1517
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1518 int cur_idx;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1519 struct http_txn *txn = &t->txn;
1520 struct http_msg *msg = &txn->req;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1521 struct proxy *cur_proxy;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1522
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1523 if (likely(req->lr < req->r))
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1524 http_msg_analyzer(req, msg, &txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1525
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1526 /* 1: we might have to print this header in debug mode */
1527 if (unlikely((global.mode & MODE_DEBUG) &&
1528 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1529 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1530 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1531
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1532 sol = req->data + msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1533 eol = sol + msg->sl.rq.l;
1534 debug_hdr("clireq", t, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1535
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1536 sol += hdr_idx_first_pos(&txn->hdr_idx);
1537 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1538
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1539 while (cur_idx) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1540 eol = sol + txn->hdr_idx.v[cur_idx].len;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1541 debug_hdr("clihdr", t, sol, eol);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1542 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
1543 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1544 }
1545 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1546
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1547
1548 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1549 * Now we quickly check if we have found a full valid request.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1550 * If not so, we check the FD and buffer states before leaving.
1551 * A full request is indicated by the fact that we have seen
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1552 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
1553 * requests are checked first.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1554 *
1555 */
1556
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1557 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1558 /*
1559 * First, let's catch bad requests.
1560 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1561 if (unlikely(msg->msg_state == HTTP_MSG_ERROR))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1562 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1563
1564 /* 1: Since we are in header mode, if there's no space
1565 * left for headers, we won't be able to free more
1566 * later, so the session will never terminate. We
1567 * must terminate it now.
1568 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1569 if (unlikely(req->l >= req->rlim - req->data)) {
1570 /* FIXME: check if URI is set and return Status
1571 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1572 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1573 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1574 }
1575
1576 /* 2: have we encountered a read error or a close ? */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1577 else if (unlikely(req->flags & (BF_READ_ERROR | BF_READ_NULL))) {
1578 /* read error, or last read : give up. */
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]1579 buffer_shutr(req);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1580 fd_delete(t->cli_fd);
1581 t->cli_state = CL_STCLOSE;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]1582 t->fe->failed_req++;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1583 if (!(t->flags & SN_ERR_MASK))
1584 t->flags |= SN_ERR_CLICL;
1585 if (!(t->flags & SN_FINST_MASK))
1586 t->flags |= SN_FINST_R;
1587 return 1;
1588 }
1589
1590 /* 3: has the read timeout expired ? */
Willy Tarreau036fae02008-01-06 13:24:40 +0100[diff] [blame]1591 else if (unlikely(tv_isle(&req->rex, &now) ||
1592 tv_isle(&txn->exp, &now))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1593 /* read timeout : give up with an error message. */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1594 txn->status = 408;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1595 client_retnclose(t, error_message(t, HTTP_ERR_408));
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]1596 t->fe->failed_req++;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1597 if (!(t->flags & SN_ERR_MASK))
1598 t->flags |= SN_ERR_CLITO;
1599 if (!(t->flags & SN_FINST_MASK))
1600 t->flags |= SN_FINST_R;
1601 return 1;
1602 }
1603
1604 /* 4: do we need to re-enable the read socket ? */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]1605 else if (unlikely(EV_FD_COND_S(t->cli_fd, DIR_RD))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1606 /* fd in DIR_RD was disabled, perhaps because of a previous buffer
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1607 * full. We cannot loop here since stream_sock_read will disable it only if
1608 * req->l == rlim-data
1609 */
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]1610 if (!tv_add_ifset(&req->rex, &now, &t->fe->timeout.client))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1611 tv_eternity(&req->rex);
1612 }
1613 return t->cli_state != CL_STHEADERS;
1614 }
1615
1616
1617 /****************************************************************
1618 * More interesting part now : we know that we have a complete *
1619 * request which at least looks like HTTP. We have an indicator *
1620 * of each header's length, so we can parse them quickly. *
1621 ****************************************************************/
1622
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1623 /* ensure we keep this pointer to the beginning of the message */
1624 msg->sol = req->data + msg->som;
1625
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1626 /*
1627 * 1: identify the method
1628 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1629 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1630
1631 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1632 * 2: check if the URI matches the monitor_uri.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1633 * We have to do this for every request which gets in, because
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1634 * the monitor-uri is defined by the frontend.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1635 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1636 if (unlikely((t->fe->monitor_uri_len != 0) &&
1637 (t->fe->monitor_uri_len == msg->sl.rq.u_l) &&
1638 !memcmp(&req->data[msg->sl.rq.u],
1639 t->fe->monitor_uri,
1640 t->fe->monitor_uri_len))) {
1641 /*
1642 * We have found the monitor URI
1643 */
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1644 struct acl_cond *cond;
1645 cur_proxy = t->fe;
1646
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1647 t->flags |= SN_MONITOR;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]1648
1649 /* Check if we want to fail this monitor request or not */
1650 list_for_each_entry(cond, &cur_proxy->mon_fail_cond, list) {
1651 int ret = acl_exec_cond(cond, cur_proxy, t, txn, ACL_DIR_REQ);
1652 if (cond->pol == ACL_COND_UNLESS)
1653 ret = !ret;
1654
1655 if (ret) {
1656 /* we fail this request, let's return 503 service unavail */
1657 txn->status = 503;
1658 client_retnclose(t, error_message(t, HTTP_ERR_503));
1659 goto return_prx_cond;
1660 }
1661 }
1662
1663 /* nothing to fail, let's reply normaly */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1664 txn->status = 200;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1665 client_retnclose(t, &http_200_chunk);
1666 goto return_prx_cond;
1667 }
1668
1669 /*
1670 * 3: Maybe we have to copy the original REQURI for the logs ?
1671 * Note: we cannot log anymore if the request has been
1672 * classified as invalid.
1673 */
1674 if (unlikely(t->logs.logwait & LW_REQ)) {
1675 /* we have a complete HTTP request that we must log */
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]1676 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1677 int urilen = msg->sl.rq.l;
1678
1679 if (urilen >= REQURI_LEN)
1680 urilen = REQURI_LEN - 1;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1681 memcpy(txn->uri, &req->data[msg->som], urilen);
1682 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1683
1684 if (!(t->logs.logwait &= ~LW_REQ))
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1685 http_sess_log(t);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1686 } else {
1687 Alert("HTTP logging : out of memory.\n");
1688 }
1689 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1690
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1691
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1692 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
1693 if (unlikely(msg->sl.rq.v_l == 0)) {
1694 int delta;
1695 char *cur_end;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1696 msg->sol = req->data + msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1697 cur_end = msg->sol + msg->sl.rq.l;
1698 delta = 0;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1699
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1700 if (msg->sl.rq.u_l == 0) {
1701 /* if no URI was set, add "/" */
1702 delta = buffer_replace2(req, cur_end, cur_end, " /", 2);
1703 cur_end += delta;
1704 msg->eoh += delta;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1705 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1706 /* add HTTP version */
1707 delta = buffer_replace2(req, cur_end, cur_end, " HTTP/1.0\r\n", 11);
1708 msg->eoh += delta;
1709 cur_end += delta;
1710 cur_end = (char *)http_parse_reqline(msg, req->data,
1711 HTTP_MSG_RQMETH,
1712 msg->sol, cur_end + 1,
1713 NULL, NULL);
1714 if (unlikely(!cur_end))
1715 goto return_bad_req;
1716
1717 /* we have a full HTTP/1.0 request now and we know that
1718 * we have either a CR or an LF at <ptr>.
1719 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1720 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1721 }
1722
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1723
1724 /* 5: we may need to capture headers */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1725 if (unlikely((t->logs.logwait & LW_REQHDR) && t->fe->req_cap))
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1726 capture_headers(req->data + msg->som, &txn->hdr_idx,
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1727 txn->req.cap, t->fe->req_cap);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1728
1729 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1730 * 6: we will have to evaluate the filters.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1731 * As opposed to version 1.2, now they will be evaluated in the
1732 * filters order and not in the header order. This means that
1733 * each filter has to be validated among all headers.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1734 *
1735 * We can now check whether we want to switch to another
1736 * backend, in which case we will re-check the backend's
1737 * filters and various options. In order to support 3-level
1738 * switching, here's how we should proceed :
1739 *
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1740 * a) run be.
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1741 * if (switch) then switch ->be to the new backend.
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1742 * b) run be if (be != fe).
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1743 * There cannot be any switch from there, so ->be cannot be
1744 * changed anymore.
1745 *
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1746 * => filters always apply to ->be, then ->be may change.
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1747 *
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1748 * The response path will be able to apply either ->be, or
1749 * ->be then ->fe filters in order to match the reverse of
1750 * the forward sequence.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1751 */
1752
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1753 do {
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1754 struct acl_cond *cond;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1755 struct proxy *rule_set = t->be;
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1756 cur_proxy = t->be;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1757
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1758 /* first check whether we have some ACLs set to block this request */
1759 list_for_each_entry(cond, &cur_proxy->block_cond, list) {
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]1760 int ret = acl_exec_cond(cond, cur_proxy, t, txn, ACL_DIR_REQ);
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1761 if (cond->pol == ACL_COND_UNLESS)
1762 ret = !ret;
1763
1764 if (ret) {
1765 txn->status = 403;
1766 /* let's log the request time */
1767 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
1768 client_retnclose(t, error_message(t, HTTP_ERR_403));
1769 goto return_prx_cond;
1770 }
1771 }
1772
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1773 /* try headers filters */
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1774 if (rule_set->req_exp != NULL) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1775 if (apply_filters_to_request(t, req, rule_set->req_exp) < 0)
1776 goto return_bad_req;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1777 }
1778
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1779 if (!(t->flags & SN_BE_ASSIGNED) && (t->be != cur_proxy)) {
1780 /* to ensure correct connection accounting on
1781 * the backend, we count the connection for the
1782 * one managing the queue.
1783 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1784 t->be->beconn++;
1785 if (t->be->beconn > t->be->beconn_max)
1786 t->be->beconn_max = t->be->beconn;
1787 t->be->cum_beconn++;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1788 t->flags |= SN_BE_ASSIGNED;
1789 }
1790
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1791 /* has the request been denied ? */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]1792 if (txn->flags & TX_CLDENY) {
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1793 /* no need to go further */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1794 txn->status = 403;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1795 /* let's log the request time */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]1796 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1797 client_retnclose(t, error_message(t, HTTP_ERR_403));
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1798 goto return_prx_cond;
1799 }
1800
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1801 /* We might have to check for "Connection:" */
Krzysztof Oledzki336d4752007-12-25 02:40:22 +0100[diff] [blame]1802 if (((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1803 !(t->flags & SN_CONN_CLOSED)) {
1804 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1805 int cur_idx, old_idx, delta, val;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1806 struct hdr_idx_elem *cur_hdr;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1807
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1808 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1809 old_idx = 0;
1810
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1811 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
1812 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1813 cur_ptr = cur_next;
1814 cur_end = cur_ptr + cur_hdr->len;
1815 cur_next = cur_end + cur_hdr->cr + 1;
1816
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1817 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
1818 if (val) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1819 /* 3 possibilities :
1820 * - we have already set Connection: close,
1821 * so we remove this line.
1822 * - we have not yet set Connection: close,
1823 * but this line indicates close. We leave
1824 * it untouched and set the flag.
1825 * - we have not yet set Connection: close,
1826 * and this line indicates non-close. We
1827 * replace it.
1828 */
1829 if (t->flags & SN_CONN_CLOSED) {
1830 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1831 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1832 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1833 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
1834 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1835 cur_hdr->len = 0;
1836 } else {
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1837 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
1838 delta = buffer_replace2(req, cur_ptr + val, cur_end,
1839 "close", 5);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1840 cur_next += delta;
1841 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1842 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1843 }
1844 t->flags |= SN_CONN_CLOSED;
1845 }
1846 }
1847 old_idx = cur_idx;
1848 }
Willy Tarreauf2f0ee82007-03-30 12:02:43 +0200[diff] [blame]1849 }
1850 /* add request headers from the rule sets in the same order */
1851 for (cur_idx = 0; cur_idx < rule_set->nb_reqadd; cur_idx++) {
1852 if (unlikely(http_header_add_tail(req,
1853 &txn->req,
1854 &txn->hdr_idx,
1855 rule_set->req_add[cur_idx])) < 0)
1856 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1857 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]1858
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1859 /* check if stats URI was requested, and if an auth is needed */
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]1860 if (rule_set->uri_auth != NULL &&
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1861 (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)) {
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]1862 /* we have to check the URI and auth for this request */
1863 if (stats_check_uri_auth(t, rule_set))
1864 return 1;
1865 }
1866
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]1867 /* now check whether we have some switching rules for this request */
1868 if (!(t->flags & SN_BE_ASSIGNED)) {
1869 struct switching_rule *rule;
1870
1871 list_for_each_entry(rule, &cur_proxy->switching_rules, list) {
1872 int ret;
1873
1874 ret = acl_exec_cond(rule->cond, cur_proxy, t, txn, ACL_DIR_REQ);
1875 if (cond->pol == ACL_COND_UNLESS)
1876 ret = !ret;
1877
1878 if (ret) {
1879 t->be = rule->be.backend;
1880 t->be->beconn++;
1881 if (t->be->beconn > t->be->beconn_max)
1882 t->be->beconn_max = t->be->beconn;
1883 t->be->cum_beconn++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]1884
1885 /* assign new parameters to the session from the new backend */
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]1886 t->rep->rto = t->req->wto = t->be->timeout.server;
1887 t->req->cto = t->be->timeout.connect;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]1888 t->conn_retries = t->be->conn_retries;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]1889 t->flags |= SN_BE_ASSIGNED;
1890 break;
1891 }
1892 }
1893 }
1894
Willy Tarreau5fdfb912007-01-01 23:11:07 +0100[diff] [blame]1895 if (!(t->flags & SN_BE_ASSIGNED) && cur_proxy->defbe.be) {
1896 /* No backend was set, but there was a default
1897 * backend set in the frontend, so we use it and
1898 * loop again.
1899 */
1900 t->be = cur_proxy->defbe.be;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1901 t->be->beconn++;
1902 if (t->be->beconn > t->be->beconn_max)
1903 t->be->beconn_max = t->be->beconn;
1904 t->be->cum_beconn++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]1905
1906 /* assign new parameters to the session from the new backend */
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]1907 t->rep->rto = t->req->wto = t->be->timeout.server;
1908 t->req->cto = t->be->timeout.connect;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]1909 t->conn_retries = t->be->conn_retries;
Willy Tarreau5fdfb912007-01-01 23:11:07 +0100[diff] [blame]1910 t->flags |= SN_BE_ASSIGNED;
1911 }
1912 } while (t->be != cur_proxy); /* we loop only if t->be has changed */
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1913
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1914
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1915 if (!(t->flags & SN_BE_ASSIGNED)) {
1916 /* To ensure correct connection accounting on
1917 * the backend, we count the connection for the
1918 * one managing the queue.
1919 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1920 t->be->beconn++;
1921 if (t->be->beconn > t->be->beconn_max)
1922 t->be->beconn_max = t->be->beconn;
1923 t->be->cum_beconn++;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1924 t->flags |= SN_BE_ASSIGNED;
1925 }
1926
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1927 /*
1928 * Right now, we know that we have processed the entire headers
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1929 * and that unwanted requests have been filtered out. We can do
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1930 * whatever we want with the remaining request. Also, now we
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1931 * may have separate values for ->fe, ->be.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1932 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1933
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1934 /*
1935 * If HTTP PROXY is set we simply get remote server address
1936 * parsing incoming request.
1937 */
1938 if ((t->be->options & PR_O_HTTP_PROXY) && !(t->flags & SN_ADDR_SET)) {
1939 url2sa(req->data + msg->sl.rq.u, msg->sl.rq.u_l, &t->srv_addr);
1940 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1941
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1942 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1943 * 7: the appsession cookie was looked up very early in 1.2,
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1944 * so let's do the same now.
1945 */
1946
1947 /* It needs to look into the URI */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1948 if (t->be->appsession_name) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1949 get_srv_from_appsession(t, &req->data[msg->som], msg->sl.rq.l);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1950 }
1951
1952
1953 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1954 * 8: Now we can work with the cookies.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1955 * Note that doing so might move headers in the request, but
1956 * the fields will stay coherent and the URI will not move.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1957 * This should only be performed in the backend.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1958 */
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]1959 if ((t->be->cookie_name || t->be->appsession_name || t->be->capture_name)
1960 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1961 manage_client_side_cookies(t, req);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1962
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1963
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1964 /*
Willy Tarreaubb046ac2007-03-03 19:17:03 +0100[diff] [blame]1965 * 9: add X-Forwarded-For if either the frontend or the backend
1966 * asks for it.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1967 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1968 if ((t->fe->options | t->be->options) & PR_O_FWDFOR) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1969 if (t->cli_addr.ss_family == AF_INET) {
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]1970 /* Add an X-Forwarded-For header unless the source IP is
1971 * in the 'except' network range.
1972 */
1973 if ((!t->fe->except_mask.s_addr ||
1974 (((struct sockaddr_in *)&t->cli_addr)->sin_addr.s_addr & t->fe->except_mask.s_addr)
1975 != t->fe->except_net.s_addr) &&
1976 (!t->be->except_mask.s_addr ||
1977 (((struct sockaddr_in *)&t->cli_addr)->sin_addr.s_addr & t->be->except_mask.s_addr)
1978 != t->be->except_net.s_addr)) {
1979 int len;
1980 unsigned char *pn;
1981 pn = (unsigned char *)&((struct sockaddr_in *)&t->cli_addr)->sin_addr;
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1982
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]1983 len = sprintf(trash, "X-Forwarded-For: %d.%d.%d.%d",
1984 pn[0], pn[1], pn[2], pn[3]);
1985
1986 if (unlikely(http_header_add_tail2(req, &txn->req,
1987 &txn->hdr_idx, trash, len)) < 0)
1988 goto return_bad_req;
1989 }
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1990 }
1991 else if (t->cli_addr.ss_family == AF_INET6) {
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]1992 /* FIXME: for the sake of completeness, we should also support
1993 * 'except' here, although it is mostly useless in this case.
1994 */
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1995 int len;
1996 char pn[INET6_ADDRSTRLEN];
1997 inet_ntop(AF_INET6,
1998 (const void *)&((struct sockaddr_in6 *)(&t->cli_addr))->sin6_addr,
1999 pn, sizeof(pn));
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2000 len = sprintf(trash, "X-Forwarded-For: %s", pn);
2001 if (unlikely(http_header_add_tail2(req, &txn->req,
2002 &txn->hdr_idx, trash, len)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2003 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2004 }
2005 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2006
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2007 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2008 * 10: add "Connection: close" if needed and not yet set.
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2009 * 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]2010 */
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2011 if (!(t->flags & SN_CONN_CLOSED) &&
Krzysztof Oledzki336d4752007-12-25 02:40:22 +0100[diff] [blame]2012 ((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) {
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2013 if ((unlikely(msg->sl.rq.v_l != 8) ||
2014 unlikely(req->data[msg->som + msg->sl.rq.v + 7] != '0')) &&
2015 unlikely(http_header_add_tail2(req, &txn->req, &txn->hdr_idx,
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2016 "Connection: close", 17)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2017 goto return_bad_req;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2018 t->flags |= SN_CONN_CLOSED;
Willy Tarreaue15d9132006-12-14 22:26:42 +0100[diff] [blame]2019 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2020
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2021 /*************************************************************
2022 * OK, that's finished for the headers. We have done what we *
2023 * could. Let's switch to the DATA state. *
2024 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2025
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2026 t->cli_state = CL_STDATA;
2027 req->rlim = req->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2028
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2029 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2030
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2031 if (!tv_isset(&t->fe->timeout.client) ||
2032 (t->srv_state < SV_STDATA && tv_isset(&t->be->timeout.server))) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2033 /* If the client has no timeout, or if the server is not ready yet,
2034 * and we know for sure that it can expire, then it's cleaner to
2035 * disable the timeout on the client side so that too low values
2036 * cannot make the sessions abort too early.
2037 *
2038 * FIXME-20050705: the server needs a way to re-enable this time-out
2039 * when it switches its state, otherwise a client can stay connected
2040 * indefinitely. This now seems to be OK.
2041 */
2042 tv_eternity(&req->rex);
2043 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2044
Willy Tarreau1fa31262007-12-03 00:36:16 +0100[diff] [blame]2045 /* When a connection is tarpitted, we use the tarpit timeout,
2046 * which may be the same as the connect timeout if unspecified.
2047 * If unset, then set it to zero because we really want it to
2048 * eventually expire.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2049 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2050 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2051 t->req->l = 0;
2052 /* flush the request so that we can drop the connection early
2053 * if the client closes first.
2054 */
Willy Tarreau1fa31262007-12-03 00:36:16 +0100[diff] [blame]2055 if (!tv_add_ifset(&req->cex, &now, &t->be->timeout.tarpit))
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]2056 req->cex = now;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2057 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2058
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2059 /* OK let's go on with the BODY now */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2060 goto process_data;
2061
2062 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]2063 txn->req.msg_state = HTTP_MSG_ERROR;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2064 txn->status = 400;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2065 client_retnclose(t, error_message(t, HTTP_ERR_400));
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]2066 t->fe->failed_req++;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2067 return_prx_cond:
2068 if (!(t->flags & SN_ERR_MASK))
2069 t->flags |= SN_ERR_PRXCOND;
2070 if (!(t->flags & SN_FINST_MASK))
2071 t->flags |= SN_FINST_R;
2072 return 1;
2073
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2074 }
2075 else if (c == CL_STDATA) {
2076 process_data:
2077 /* FIXME: this error handling is partly buggy because we always report
2078 * a 'DATA' phase while we don't know if the server was in IDLE, CONN
2079 * or HEADER phase. BTW, it's not logical to expire the client while
2080 * we're waiting for the server to connect.
2081 */
2082 /* read or write error */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2083 if (rep->flags & BF_WRITE_ERROR || req->flags & BF_READ_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2084 buffer_shutr(req);
2085 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2086 fd_delete(t->cli_fd);
2087 t->cli_state = CL_STCLOSE;
2088 if (!(t->flags & SN_ERR_MASK))
2089 t->flags |= SN_ERR_CLICL;
2090 if (!(t->flags & SN_FINST_MASK)) {
2091 if (t->pend_pos)
2092 t->flags |= SN_FINST_Q;
2093 else if (s == SV_STCONN)
2094 t->flags |= SN_FINST_C;
2095 else
2096 t->flags |= SN_FINST_D;
2097 }
2098 return 1;
2099 }
2100 /* last read, or end of server write */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2101 else if (req->flags & BF_READ_NULL || s == SV_STSHUTW || s == SV_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2102 EV_FD_CLR(t->cli_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2103 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2104 t->cli_state = CL_STSHUTR;
2105 return 1;
2106 }
2107 /* last server read and buffer empty */
2108 else if ((s == SV_STSHUTR || s == SV_STCLOSE) && (rep->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2109 EV_FD_CLR(t->cli_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2110 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2111 shutdown(t->cli_fd, SHUT_WR);
2112 /* We must ensure that the read part is still alive when switching
2113 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2114 EV_FD_SET(t->cli_fd, DIR_RD);
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2115 tv_add_ifset(&req->rex, &now, &t->fe->timeout.client);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2116 t->cli_state = CL_STSHUTW;
2117 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2118 return 1;
2119 }
2120 /* read timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2121 else if (tv_isle(&req->rex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2122 EV_FD_CLR(t->cli_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2123 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2124 t->cli_state = CL_STSHUTR;
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 /* write timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2138 else if (tv_isle(&rep->wex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2139 EV_FD_CLR(t->cli_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2140 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2141 shutdown(t->cli_fd, SHUT_WR);
2142 /* We must ensure that the read part is still alive when switching
2143 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2144 EV_FD_SET(t->cli_fd, DIR_RD);
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2145 tv_add_ifset(&req->rex, &now, &t->fe->timeout.client);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2146
2147 t->cli_state = CL_STSHUTW;
2148 if (!(t->flags & SN_ERR_MASK))
2149 t->flags |= SN_ERR_CLITO;
2150 if (!(t->flags & SN_FINST_MASK)) {
2151 if (t->pend_pos)
2152 t->flags |= SN_FINST_Q;
2153 else if (s == SV_STCONN)
2154 t->flags |= SN_FINST_C;
2155 else
2156 t->flags |= SN_FINST_D;
2157 }
2158 return 1;
2159 }
2160
2161 if (req->l >= req->rlim - req->data) {
2162 /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2163 if (EV_FD_COND_C(t->cli_fd, DIR_RD)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2164 /* stop reading until we get some space */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2165 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2166 }
2167 } else {
2168 /* there's still some space in the buffer */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2169 if (EV_FD_COND_S(t->cli_fd, DIR_RD)) {
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2170 if (!tv_isset(&t->fe->timeout.client) ||
2171 (t->srv_state < SV_STDATA && tv_isset(&t->be->timeout.server)))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2172 /* If the client has no timeout, or if the server not ready yet, and we
2173 * know for sure that it can expire, then it's cleaner to disable the
2174 * timeout on the client side so that too low values cannot make the
2175 * sessions abort too early.
2176 */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2177 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2178 else
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2179 tv_add(&req->rex, &now, &t->fe->timeout.client);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2180 }
2181 }
2182
2183 if ((rep->l == 0) ||
2184 ((s < SV_STDATA) /* FIXME: this may be optimized && (rep->w == rep->h)*/)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2185 if (EV_FD_COND_C(t->cli_fd, DIR_WR)) {
2186 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2187 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2188 }
2189 } else {
2190 /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2191 if (EV_FD_COND_S(t->cli_fd, DIR_WR)) {
2192 /* restart writing */
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2193 if (tv_add_ifset(&rep->wex, &now, &t->fe->timeout.client)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2194 /* FIXME: to prevent the client from expiring read timeouts during writes,
2195 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2196 req->rex = rep->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2197 }
2198 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2199 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2200 }
2201 }
2202 return 0; /* other cases change nothing */
2203 }
2204 else if (c == CL_STSHUTR) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2205 if (rep->flags & BF_WRITE_ERROR) {
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_CLICL;
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 else if ((s == SV_STSHUTR || s == SV_STCLOSE) && (rep->l == 0)
2222 && !(t->flags & SN_SELF_GEN)) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2223 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2224 fd_delete(t->cli_fd);
2225 t->cli_state = CL_STCLOSE;
2226 return 1;
2227 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2228 else if (tv_isle(&rep->wex, &now)) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2229 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2230 fd_delete(t->cli_fd);
2231 t->cli_state = CL_STCLOSE;
2232 if (!(t->flags & SN_ERR_MASK))
2233 t->flags |= SN_ERR_CLITO;
2234 if (!(t->flags & SN_FINST_MASK)) {
2235 if (t->pend_pos)
2236 t->flags |= SN_FINST_Q;
2237 else if (s == SV_STCONN)
2238 t->flags |= SN_FINST_C;
2239 else
2240 t->flags |= SN_FINST_D;
2241 }
2242 return 1;
2243 }
2244
2245 if (t->flags & SN_SELF_GEN) {
2246 produce_content(t);
2247 if (rep->l == 0) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2248 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2249 fd_delete(t->cli_fd);
2250 t->cli_state = CL_STCLOSE;
2251 return 1;
2252 }
2253 }
2254
2255 if ((rep->l == 0)
2256 || ((s == SV_STHEADERS) /* FIXME: this may be optimized && (rep->w == rep->h)*/)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2257 if (EV_FD_COND_C(t->cli_fd, DIR_WR)) {
2258 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2259 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2260 }
2261 } else {
2262 /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2263 if (EV_FD_COND_S(t->cli_fd, DIR_WR)) {
2264 /* restart writing */
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2265 if (!tv_add_ifset(&rep->wex, &now, &t->fe->timeout.client))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2266 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2267 }
2268 }
2269 return 0;
2270 }
2271 else if (c == CL_STSHUTW) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2272 if (req->flags & BF_READ_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2273 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2274 fd_delete(t->cli_fd);
2275 t->cli_state = CL_STCLOSE;
2276 if (!(t->flags & SN_ERR_MASK))
2277 t->flags |= SN_ERR_CLICL;
2278 if (!(t->flags & SN_FINST_MASK)) {
2279 if (t->pend_pos)
2280 t->flags |= SN_FINST_Q;
2281 else if (s == SV_STCONN)
2282 t->flags |= SN_FINST_C;
2283 else
2284 t->flags |= SN_FINST_D;
2285 }
2286 return 1;
2287 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2288 else if (req->flags & BF_READ_NULL || s == SV_STSHUTW || s == SV_STCLOSE) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2289 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2290 fd_delete(t->cli_fd);
2291 t->cli_state = CL_STCLOSE;
2292 return 1;
2293 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2294 else if (tv_isle(&req->rex, &now)) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2295 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2296 fd_delete(t->cli_fd);
2297 t->cli_state = CL_STCLOSE;
2298 if (!(t->flags & SN_ERR_MASK))
2299 t->flags |= SN_ERR_CLITO;
2300 if (!(t->flags & SN_FINST_MASK)) {
2301 if (t->pend_pos)
2302 t->flags |= SN_FINST_Q;
2303 else if (s == SV_STCONN)
2304 t->flags |= SN_FINST_C;
2305 else
2306 t->flags |= SN_FINST_D;
2307 }
2308 return 1;
2309 }
2310 else if (req->l >= req->rlim - req->data) {
2311 /* no room to read more data */
2312
2313 /* FIXME-20050705: is it possible for a client to maintain a session
2314 * after the timeout by sending more data after it receives a close ?
2315 */
2316
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2317 if (EV_FD_COND_C(t->cli_fd, DIR_RD)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2318 /* stop reading until we get some space */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2319 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2320 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2321 }
2322 } else {
2323 /* there's still some space in the buffer */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2324 if (EV_FD_COND_S(t->cli_fd, DIR_RD)) {
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2325 if (!tv_add_ifset(&req->rex, &now, &t->fe->timeout.client))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2326 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2327 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2328 }
2329 }
2330 return 0;
2331 }
2332 else { /* CL_STCLOSE: nothing to do */
2333 if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
2334 int len;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2335 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]2336 write(1, trash, len);
2337 }
2338 return 0;
2339 }
2340 return 0;
2341}
2342
2343
2344/*
2345 * manages the server FSM and its socket. It returns 1 if a state has changed
2346 * (and a resync may be needed), 0 else.
2347 */
2348int process_srv(struct session *t)
2349{
2350 int s = t->srv_state;
2351 int c = t->cli_state;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2352 struct http_txn *txn = &t->txn;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2353 struct buffer *req = t->req;
2354 struct buffer *rep = t->rep;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2355 int conn_err;
2356
2357#ifdef DEBUG_FULL
2358 fprintf(stderr,"process_srv: c=%s, s=%s\n", cli_stnames[c], srv_stnames[s]);
2359#endif
Willy Tarreauee991362007-05-14 14:37:50 +0200[diff] [blame]2360
2361#if 0
2362 fprintf(stderr,"%s:%d fe->clito=%d.%d, fe->conto=%d.%d, fe->srvto=%d.%d\n",
2363 __FUNCTION__, __LINE__,
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2364 t->fe->timeout.client.tv_sec, t->fe->timeout.client.tv_usec,
2365 t->fe->timeout.connect.tv_sec, t->fe->timeout.connect.tv_usec,
2366 t->fe->timeout.server.tv_sec, t->fe->timeout.server.tv_usec);
Willy Tarreauee991362007-05-14 14:37:50 +0200[diff] [blame]2367 fprintf(stderr,"%s:%d be->clito=%d.%d, be->conto=%d.%d, be->srvto=%d.%d\n",
2368 __FUNCTION__, __LINE__,
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2369 t->be->timeout.client.tv_sec, t->be->timeout.client.tv_usec,
2370 t->be->timeout.connect.tv_sec, t->be->timeout.connect.tv_usec,
2371 t->be->timeout.server.tv_sec, t->be->timeout.server.tv_usec);
Willy Tarreauee991362007-05-14 14:37:50 +0200[diff] [blame]2372
2373 fprintf(stderr,"%s:%d req->cto=%d.%d, req->rto=%d.%d, req->wto=%d.%d\n",
2374 __FUNCTION__, __LINE__,
2375 req->cto.tv_sec, req->cto.tv_usec,
2376 req->rto.tv_sec, req->rto.tv_usec,
2377 req->wto.tv_sec, req->wto.tv_usec);
2378
2379 fprintf(stderr,"%s:%d rep->cto=%d.%d, rep->rto=%d.%d, rep->wto=%d.%d\n",
2380 __FUNCTION__, __LINE__,
2381 rep->cto.tv_sec, rep->cto.tv_usec,
2382 rep->rto.tv_sec, rep->rto.tv_usec,
2383 rep->wto.tv_sec, rep->wto.tv_usec);
2384#endif
2385
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2386 //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]2387 //EV_FD_ISSET(t->cli_fd, DIR_RD), EV_FD_ISSET(t->cli_fd, DIR_WR),
2388 //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]2389 //);
2390 if (s == SV_STIDLE) {
2391 if (c == CL_STHEADERS)
2392 return 0; /* stay in idle, waiting for data to reach the client side */
2393 else if (c == CL_STCLOSE || c == CL_STSHUTW ||
2394 (c == CL_STSHUTR &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2395 (t->req->l == 0 || t->be->options & PR_O_ABRT_CLOSE))) { /* give up */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2396 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2397 if (t->pend_pos)
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2398 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2399 /* note that this must not return any error because it would be able to
2400 * overwrite the client_retnclose() output.
2401 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2402 if (txn->flags & TX_CLTARPIT)
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2403 srv_close_with_err(t, SN_ERR_CLICL, SN_FINST_T, 0, NULL);
Willy Tarreau08fa2e32006-09-03 10:47:37 +0200[diff] [blame]2404 else
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2405 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]2406
2407 return 1;
2408 }
2409 else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2410 if (txn->flags & TX_CLTARPIT) {
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2411 /* This connection is being tarpitted. The CLIENT side has
2412 * already set the connect expiration date to the right
2413 * timeout. We just have to check that it has not expired.
2414 */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2415 if (!tv_isle(&req->cex, &now))
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2416 return 0;
2417
2418 /* We will set the queue timer to the time spent, just for
2419 * logging purposes. We fake a 500 server error, so that the
2420 * attacker will not suspect his connection has been tarpitted.
2421 * It will not cause trouble to the logs because we can exclude
2422 * the tarpitted connections by filtering on the 'PT' status flags.
2423 */
2424 tv_eternity(&req->cex);
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2425 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2426 srv_close_with_err(t, SN_ERR_PRXCOND, SN_FINST_T,
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2427 500, error_message(t, HTTP_ERR_500));
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2428 return 1;
2429 }
2430
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2431 /* Right now, we will need to create a connection to the server.
2432 * We might already have tried, and got a connection pending, in
2433 * which case we will not do anything till it's pending. It's up
2434 * to any other session to release it and wake us up again.
2435 */
2436 if (t->pend_pos) {
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2437 if (!tv_isle(&req->cex, &now))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2438 return 0;
2439 else {
2440 /* we've been waiting too long here */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2441 tv_eternity(&req->cex);
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2442 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2443 srv_close_with_err(t, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2444 503, error_message(t, HTTP_ERR_503));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2445 if (t->srv)
2446 t->srv->failed_conns++;
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2447 t->fe->failed_conns++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2448 return 1;
2449 }
2450 }
2451
2452 do {
2453 /* first, get a connection */
2454 if (srv_redispatch_connect(t))
2455 return t->srv_state != SV_STIDLE;
2456
2457 /* try to (re-)connect to the server, and fail if we expire the
2458 * number of retries.
2459 */
2460 if (srv_retryable_connect(t)) {
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2461 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2462 return t->srv_state != SV_STIDLE;
2463 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2464 } while (1);
2465 }
2466 }
2467 else if (s == SV_STCONN) { /* connection in progress */
2468 if (c == CL_STCLOSE || c == CL_STSHUTW ||
2469 (c == CL_STSHUTR &&
Willy Tarreauc9b654b2007-05-08 14:46:53 +0200[diff] [blame]2470 ((t->req->l == 0 && !(req->flags & BF_WRITE_STATUS)) ||
2471 t->be->options & PR_O_ABRT_CLOSE))) { /* give up */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2472 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2473 fd_delete(t->srv_fd);
2474 if (t->srv)
2475 t->srv->cur_sess--;
2476
2477 /* note that this must not return any error because it would be able to
2478 * overwrite the client_retnclose() output.
2479 */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2480 srv_close_with_err(t, SN_ERR_CLICL, SN_FINST_C, 0, NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2481 return 1;
2482 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2483 if (!(req->flags & BF_WRITE_STATUS) && !tv_isle(&req->cex, &now)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2484 //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]2485 return 0; /* nothing changed */
2486 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2487 else if (!(req->flags & BF_WRITE_STATUS) || (req->flags & BF_WRITE_ERROR)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2488 /* timeout, asynchronous connect error or first write error */
2489 //fprintf(stderr,"2: c=%d, s=%d\n", c, s);
2490
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]2491 if (t->flags & SN_CONN_TAR) {
2492 /* We are doing a turn-around waiting for a new connection attempt. */
2493 if (!tv_isle(&req->cex, &now))
2494 return 0;
2495 t->flags &= ~SN_CONN_TAR;
2496 }
2497 else {
2498 fd_delete(t->srv_fd);
2499 if (t->srv)
2500 t->srv->cur_sess--;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2501
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]2502 if (!(req->flags & BF_WRITE_STATUS))
2503 conn_err = SN_ERR_SRVTO; // it was a connect timeout.
2504 else
2505 conn_err = SN_ERR_SRVCL; // it was an asynchronous connect error.
2506
2507 /* ensure that we have enough retries left */
2508 if (srv_count_retry_down(t, conn_err))
2509 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2510
Willy Tarreau541b5c22008-01-06 23:34:21 +0100[diff] [blame]2511 if (req->flags & BF_WRITE_ERROR) {
2512 /* we encountered an immediate connection error, and we
2513 * will have to retry connecting to the same server, most
2514 * likely leading to the same result. To avoid this, we
2515 * fake a connection timeout to retry after a turn-around
2516 * time of 1 second. We will wait in the previous if block.
2517 */
2518 t->flags |= SN_CONN_TAR;
2519 tv_ms_add(&req->cex, &now, 1000);
2520 return 0;
2521 }
2522 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2523
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2524 if (t->srv && t->conn_retries == 0 && t->be->options & PR_O_REDISP) {
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2525 /* We're on our last chance, and the REDISP option was specified.
2526 * We will ignore cookie and force to balance or use the dispatcher.
2527 */
2528 /* let's try to offer this slot to anybody */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2529 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2530 task_wakeup(t->srv->queue_mgt);
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2531
Krzysztof Piotr Oledzki25b501a2008-01-06 16:36:16 +0100[diff] [blame]2532 if (t->srv) {
Willy Tarreau98937b82007-12-10 15:05:42 +0100[diff] [blame]2533 t->srv->cum_sess++;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2534 t->srv->failed_conns++;
Krzysztof Piotr Oledzki25b501a2008-01-06 16:36:16 +0100[diff] [blame]2535 t->srv->redispatches++;
2536 }
Krzysztof Oledzki1cf36ba2007-10-18 19:12:30 +0200[diff] [blame]2537 t->be->redispatches++;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2538
2539 t->flags &= ~(SN_DIRECT | SN_ASSIGNED | SN_ADDR_SET);
Krzysztof Piotr Oledzki25b501a2008-01-06 16:36:16 +0100[diff] [blame]2540 t->flags |= SN_REDISP;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2541 t->srv = NULL; /* it's left to the dispatcher to choose a server */
Willy Tarreaua5e65752007-03-18 20:53:22 +0100[diff] [blame]2542 http_flush_cookie_flags(txn);
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2543
2544 /* first, get a connection */
2545 if (srv_redispatch_connect(t))
Willy Tarreau00559e72008-01-06 23:46:19 +0100[diff] [blame]2546 return t->srv_state != SV_STCONN;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2547 }
2548
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2549 do {
2550 /* Now we will try to either reconnect to the same server or
2551 * connect to another server. If the connection gets queued
2552 * because all servers are saturated, then we will go back to
2553 * the SV_STIDLE state.
2554 */
2555 if (srv_retryable_connect(t)) {
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2556 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2557 return t->srv_state != SV_STCONN;
2558 }
2559
2560 /* we need to redispatch the connection to another server */
2561 if (srv_redispatch_connect(t))
2562 return t->srv_state != SV_STCONN;
2563 } while (1);
2564 }
2565 else { /* no error or write 0 */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2566 t->logs.t_connect = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2567
2568 //fprintf(stderr,"3: c=%d, s=%d\n", c, s);
2569 if (req->l == 0) /* nothing to write */ {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2570 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2571 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2572 } else /* need the right to write */ {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2573 EV_FD_SET(t->srv_fd, DIR_WR);
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2574 if (tv_add_ifset(&req->wex, &now, &t->be->timeout.server)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2575 /* FIXME: to prevent the server from expiring read timeouts during writes,
2576 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2577 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2578 }
2579 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2580 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2581 }
2582
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2583 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]2584 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2585 if (!tv_add_ifset(&rep->rex, &now, &t->be->timeout.server))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2586 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2587
2588 t->srv_state = SV_STDATA;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2589 rep->rlim = rep->data + BUFSIZE; /* no rewrite needed */
2590
2591 /* if the user wants to log as soon as possible, without counting
2592 bytes from the server, then this is the right moment. */
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2593 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2594 t->logs.t_close = t->logs.t_connect; /* to get a valid end date */
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]2595 tcp_sess_log(t);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2596 }
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]2597#ifdef CONFIG_HAP_TCPSPLICE
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2598 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]2599 /* TCP splicing supported by both FE and BE */
2600 tcp_splice_splicefd(t->cli_fd, t->srv_fd, 0);
2601 }
2602#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2603 }
2604 else {
2605 t->srv_state = SV_STHEADERS;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2606 rep->rlim = rep->data + BUFSIZE - MAXREWRITE; /* rewrite needed */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2607 t->txn.rsp.msg_state = HTTP_MSG_RPBEFORE;
2608 /* reset hdr_idx which was already initialized by the request.
2609 * right now, the http parser does it.
2610 * hdr_idx_init(&t->txn.hdr_idx);
2611 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2612 }
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2613 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2614 return 1;
2615 }
2616 }
2617 else if (s == SV_STHEADERS) { /* receiving server headers */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2618 /*
2619 * Now parse the partial (or complete) lines.
2620 * We will check the response syntax, and also join multi-line
2621 * headers. An index of all the lines will be elaborated while
2622 * parsing.
2623 *
2624 * For the parsing, we use a 28 states FSM.
2625 *
2626 * Here is the information we currently have :
2627 * rep->data + req->som = beginning of response
2628 * rep->data + req->eoh = end of processed headers / start of current one
2629 * rep->data + req->eol = end of current header or line (LF or CRLF)
2630 * rep->lr = first non-visited byte
2631 * rep->r = end of data
2632 */
2633
2634 int cur_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2635 struct http_msg *msg = &txn->rsp;
2636 struct proxy *cur_proxy;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2637
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2638 if (likely(rep->lr < rep->r))
2639 http_msg_analyzer(rep, msg, &txn->hdr_idx);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2640
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2641 /* 1: we might have to print this header in debug mode */
2642 if (unlikely((global.mode & MODE_DEBUG) &&
2643 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
2644 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
2645 char *eol, *sol;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2646
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2647 sol = rep->data + msg->som;
2648 eol = sol + msg->sl.rq.l;
2649 debug_hdr("srvrep", t, sol, eol);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2650
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2651 sol += hdr_idx_first_pos(&txn->hdr_idx);
2652 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2653
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2654 while (cur_idx) {
2655 eol = sol + txn->hdr_idx.v[cur_idx].len;
2656 debug_hdr("srvhdr", t, sol, eol);
2657 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2658 cur_idx = txn->hdr_idx.v[cur_idx].next;
2659 }
2660 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2661
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2662
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2663 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]2664 /* fd in DIR_RD was disabled, perhaps because of a previous buffer
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2665 * full. We cannot loop here since stream_sock_read will disable it only if
2666 * rep->l == rlim-data
2667 */
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2668 if (!tv_add_ifset(&rep->rex, &now, &t->be->timeout.server))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2669 tv_eternity(&rep->rex);
2670 }
2671
2672
2673 /*
2674 * Now we quickly check if we have found a full valid response.
2675 * If not so, we check the FD and buffer states before leaving.
2676 * A full response is indicated by the fact that we have seen
2677 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
2678 * responses are checked first.
2679 *
2680 * Depending on whether the client is still there or not, we
2681 * may send an error response back or not. Note that normally
2682 * we should only check for HTTP status there, and check I/O
2683 * errors somewhere else.
2684 */
2685
2686 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
2687
2688 /* Invalid response, or read error or write error */
2689 if (unlikely((msg->msg_state == HTTP_MSG_ERROR) ||
2690 (req->flags & BF_WRITE_ERROR) ||
2691 (rep->flags & BF_READ_ERROR))) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2692 buffer_shutr(rep);
2693 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2694 fd_delete(t->srv_fd);
2695 if (t->srv) {
2696 t->srv->cur_sess--;
2697 t->srv->failed_resp++;
2698 }
2699 t->be->failed_resp++;
2700 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2701 txn->status = 502;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2702 client_return(t, error_message(t, HTTP_ERR_502));
2703 if (!(t->flags & SN_ERR_MASK))
2704 t->flags |= SN_ERR_SRVCL;
2705 if (!(t->flags & SN_FINST_MASK))
2706 t->flags |= SN_FINST_H;
2707 /* We used to have a free connection slot. Since we'll never use it,
2708 * we have to inform the server that it may be used by another session.
2709 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2710 if (t->srv && may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2711 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2712
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2713 return 1;
2714 }
2715
2716 /* end of client write or end of server read.
2717 * since we are in header mode, if there's no space left for headers, we
2718 * won't be able to free more later, so the session will never terminate.
2719 */
2720 else if (unlikely(rep->flags & BF_READ_NULL ||
2721 c == CL_STSHUTW || c == CL_STCLOSE ||
2722 rep->l >= rep->rlim - rep->data)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2723 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2724 buffer_shutr(rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2725 t->srv_state = SV_STSHUTR;
2726 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2727 return 1;
2728 }
2729
2730 /* read timeout : return a 504 to the client.
2731 */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2732 else if (unlikely(EV_FD_ISSET(t->srv_fd, DIR_RD) &&
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2733 tv_isle(&rep->rex, &now))) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2734 buffer_shutr(rep);
2735 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2736 fd_delete(t->srv_fd);
2737 if (t->srv) {
2738 t->srv->cur_sess--;
2739 t->srv->failed_resp++;
2740 }
2741 t->be->failed_resp++;
2742 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2743 txn->status = 504;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2744 client_return(t, error_message(t, HTTP_ERR_504));
2745 if (!(t->flags & SN_ERR_MASK))
2746 t->flags |= SN_ERR_SRVTO;
2747 if (!(t->flags & SN_FINST_MASK))
2748 t->flags |= SN_FINST_H;
2749 /* We used to have a free connection slot. Since we'll never use it,
2750 * we have to inform the server that it may be used by another session.
2751 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2752 if (t->srv && may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2753 task_wakeup(t->srv->queue_mgt);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2754 return 1;
2755 }
2756
2757 /* last client read and buffer empty */
2758 /* FIXME!!! here, we don't want to switch to SHUTW if the
2759 * client shuts read too early, because we may still have
2760 * some work to do on the headers.
2761 * The side-effect is that if the client completely closes its
2762 * connection during SV_STHEADER, the connection to the server
2763 * is kept until a response comes back or the timeout is reached.
2764 */
2765 else if (unlikely((/*c == CL_STSHUTR ||*/ c == CL_STCLOSE) &&
2766 (req->l == 0))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2767 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2768 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2769
2770 /* We must ensure that the read part is still
2771 * alive when switching to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2772 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2773 tv_add_ifset(&rep->rex, &now, &t->be->timeout.server);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2774
2775 shutdown(t->srv_fd, SHUT_WR);
2776 t->srv_state = SV_STSHUTW;
2777 return 1;
2778 }
2779
2780 /* write timeout */
2781 /* FIXME!!! here, we don't want to switch to SHUTW if the
2782 * client shuts read too early, because we may still have
2783 * some work to do on the headers.
2784 */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2785 else if (unlikely(EV_FD_ISSET(t->srv_fd, DIR_WR) &&
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2786 tv_isle(&req->wex, &now))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2787 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2788 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2789 shutdown(t->srv_fd, SHUT_WR);
2790 /* We must ensure that the read part is still alive
2791 * when switching to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2792 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2793 tv_add_ifset(&rep->rex, &now, &t->be->timeout.server);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2794
2795 t->srv_state = SV_STSHUTW;
2796 if (!(t->flags & SN_ERR_MASK))
2797 t->flags |= SN_ERR_SRVTO;
2798 if (!(t->flags & SN_FINST_MASK))
2799 t->flags |= SN_FINST_H;
2800 return 1;
2801 }
2802
2803 /*
2804 * And now the non-error cases.
2805 */
2806
2807 /* Data remaining in the request buffer.
2808 * This happens during the first pass here, and during
2809 * long posts.
2810 */
2811 else if (likely(req->l)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2812 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
2813 /* restart writing */
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]2814 if (tv_add_ifset(&req->wex, &now, &t->be->timeout.server)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2815 /* FIXME: to prevent the server from expiring read timeouts during writes,
2816 * we refresh it. */
2817 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2818 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2819 else
2820 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2821 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2822 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2823
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2824 /* nothing left in the request buffer */
2825 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2826 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
2827 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2828 tv_eternity(&req->wex);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2829 }
2830 }
2831
2832 return t->srv_state != SV_STHEADERS;
2833 }
2834
2835
2836 /*****************************************************************
2837 * More interesting part now : we know that we have a complete *
2838 * response which at least looks like HTTP. We have an indicator *
2839 * of each header's length, so we can parse them quickly. *
2840 ****************************************************************/
2841
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2842 /* ensure we keep this pointer to the beginning of the message */
2843 msg->sol = rep->data + msg->som;
2844
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2845 /*
2846 * 1: get the status code and check for cacheability.
2847 */
2848
2849 t->logs.logwait &= ~LW_RESP;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2850 txn->status = strl2ui(rep->data + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2851
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2852 switch (txn->status) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2853 case 200:
2854 case 203:
2855 case 206:
2856 case 300:
2857 case 301:
2858 case 410:
2859 /* RFC2616 @13.4:
2860 * "A response received with a status code of
2861 * 200, 203, 206, 300, 301 or 410 MAY be stored
2862 * by a cache (...) unless a cache-control
2863 * directive prohibits caching."
2864 *
2865 * RFC2616 @9.5: POST method :
2866 * "Responses to this method are not cacheable,
2867 * unless the response includes appropriate
2868 * Cache-Control or Expires header fields."
2869 */
2870 if (likely(txn->meth != HTTP_METH_POST) &&
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]2871 (t->be->options & (PR_O_CHK_CACHE|PR_O_COOK_NOC)))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2872 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2873 break;
2874 default:
2875 break;
2876 }
2877
2878 /*
2879 * 2: we may need to capture headers
2880 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2881 if (unlikely((t->logs.logwait & LW_RSPHDR) && t->fe->rsp_cap))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2882 capture_headers(rep->data + msg->som, &txn->hdr_idx,
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2883 txn->rsp.cap, t->fe->rsp_cap);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2884
2885 /*
2886 * 3: we will have to evaluate the filters.
2887 * As opposed to version 1.2, now they will be evaluated in the
2888 * filters order and not in the header order. This means that
2889 * each filter has to be validated among all headers.
2890 *
2891 * Filters are tried with ->be first, then with ->fe if it is
2892 * different from ->be.
2893 */
2894
2895 t->flags &= ~SN_CONN_CLOSED; /* prepare for inspection */
2896
2897 cur_proxy = t->be;
2898 while (1) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2899 struct proxy *rule_set = cur_proxy;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2900
2901 /* try headers filters */
2902 if (rule_set->rsp_exp != NULL) {
2903 if (apply_filters_to_response(t, rep, rule_set->rsp_exp) < 0) {
2904 return_bad_resp:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2905 if (t->srv) {
2906 t->srv->cur_sess--;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2907 t->srv->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2908 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2909 cur_proxy->failed_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2910 return_srv_prx_502:
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2911 buffer_shutr(rep);
2912 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2913 fd_delete(t->srv_fd);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2914 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2915 txn->status = 502;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2916 client_return(t, error_message(t, HTTP_ERR_502));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2917 if (!(t->flags & SN_ERR_MASK))
2918 t->flags |= SN_ERR_PRXCOND;
2919 if (!(t->flags & SN_FINST_MASK))
2920 t->flags |= SN_FINST_H;
2921 /* We used to have a free connection slot. Since we'll never use it,
2922 * we have to inform the server that it may be used by another session.
2923 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2924 if (t->srv && may_dequeue_tasks(t->srv, cur_proxy))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2925 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2926 return 1;
2927 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2928 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2929
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2930 /* has the response been denied ? */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2931 if (txn->flags & TX_SVDENY) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2932 if (t->srv) {
2933 t->srv->cur_sess--;
2934 t->srv->failed_secu++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2935 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2936 cur_proxy->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2937 goto return_srv_prx_502;
2938 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2939
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2940 /* We might have to check for "Connection:" */
Krzysztof Oledzki336d4752007-12-25 02:40:22 +0100[diff] [blame]2941 if (((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2942 !(t->flags & SN_CONN_CLOSED)) {
2943 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2944 int cur_idx, old_idx, delta, val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2945 struct hdr_idx_elem *cur_hdr;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2946
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2947 cur_next = rep->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
2948 old_idx = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2949
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2950 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
2951 cur_hdr = &txn->hdr_idx.v[cur_idx];
2952 cur_ptr = cur_next;
2953 cur_end = cur_ptr + cur_hdr->len;
2954 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2955
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2956 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
2957 if (val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2958 /* 3 possibilities :
2959 * - we have already set Connection: close,
2960 * so we remove this line.
2961 * - we have not yet set Connection: close,
2962 * but this line indicates close. We leave
2963 * it untouched and set the flag.
2964 * - we have not yet set Connection: close,
2965 * and this line indicates non-close. We
2966 * replace it.
2967 */
2968 if (t->flags & SN_CONN_CLOSED) {
2969 delta = buffer_replace2(rep, cur_ptr, cur_next, NULL, 0);
2970 txn->rsp.eoh += delta;
2971 cur_next += delta;
2972 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
2973 txn->hdr_idx.used--;
2974 cur_hdr->len = 0;
2975 } else {
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2976 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
2977 delta = buffer_replace2(rep, cur_ptr + val, cur_end,
2978 "close", 5);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2979 cur_next += delta;
2980 cur_hdr->len += delta;
2981 txn->rsp.eoh += delta;
2982 }
2983 t->flags |= SN_CONN_CLOSED;
2984 }
2985 }
2986 old_idx = cur_idx;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2987 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2988 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2989
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2990 /* add response headers from the rule sets in the same order */
2991 for (cur_idx = 0; cur_idx < rule_set->nb_rspadd; cur_idx++) {
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2992 if (unlikely(http_header_add_tail(rep, &txn->rsp, &txn->hdr_idx,
2993 rule_set->rsp_add[cur_idx])) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2994 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2995 }
2996
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2997 /* check whether we're already working on the frontend */
2998 if (cur_proxy == t->fe)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2999 break;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3000 cur_proxy = t->fe;
3001 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3002
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3003 /*
3004 * 4: check for server cookie.
3005 */
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3006 if (t->be->cookie_name || t->be->appsession_name || t->be->capture_name
3007 || (t->be->options & PR_O_CHK_CACHE))
3008 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3009
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]3010
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3011 /*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3012 * 5: check for cache-control or pragma headers if required.
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]3013 */
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3014 if ((t->be->options & (PR_O_COOK_NOC | PR_O_CHK_CACHE)) != 0)
3015 check_response_for_cacheability(t, rep);
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]3016
3017 /*
3018 * 6: add server cookie in the response if needed
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3019 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3020 if ((t->srv) && !(t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_INS) &&
3021 (!(t->be->options & PR_O_COOK_POST) || (txn->meth == HTTP_METH_POST))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3022 int len;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3023
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3024 /* the server is known, it's not the one the client requested, we have to
3025 * insert a set-cookie here, except if we want to insert only on POST
3026 * requests and this one isn't. Note that servers which don't have cookies
3027 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3028 */
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3029 len = sprintf(trash, "Set-Cookie: %s=%s; path=/",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3030 t->be->cookie_name,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3031 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]3032
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3033 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3034 trash, len)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3035 goto return_bad_resp;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3036 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3037
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3038 /* Here, we will tell an eventual cache on the client side that we don't
3039 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
3040 * Some caches understand the correct form: 'no-cache="set-cookie"', but
3041 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
3042 */
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame]3043 if ((t->be->options & PR_O_COOK_NOC) && (txn->flags & TX_CACHEABLE)) {
3044
3045 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
3046
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3047 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3048 "Cache-control: private", 22)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3049 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3050 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3051 }
3052
3053
3054 /*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3055 * 7: check if result will be cacheable with a cookie.
3056 * We'll block the response if security checks have caught
3057 * nasty things such as a cacheable cookie.
3058 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3059 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) ==
3060 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3061 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3062
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3063 /* we're in presence of a cacheable response containing
3064 * a set-cookie header. We'll block it as requested by
3065 * the 'checkcache' option, and send an alert.
3066 */
3067 if (t->srv) {
3068 t->srv->cur_sess--;
3069 t->srv->failed_secu++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3070 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3071 t->be->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3072
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3073 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3074 t->be->id, t->srv?t->srv->id:"<dispatch>");
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3075 send_log(t->be, LOG_ALERT,
3076 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3077 t->be->id, t->srv?t->srv->id:"<dispatch>");
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3078 goto return_srv_prx_502;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3079 }
3080
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3081 /*
3082 * 8: add "Connection: close" if needed and not yet set.
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]3083 * 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]3084 */
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]3085 if (!(t->flags & SN_CONN_CLOSED) &&
Krzysztof Oledzki336d4752007-12-25 02:40:22 +0100[diff] [blame]3086 ((t->fe->options | t->be->options) & (PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) {
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]3087 if ((unlikely(msg->sl.st.v_l != 8) ||
3088 unlikely(req->data[msg->som + 7] != '0')) &&
3089 unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3090 "Connection: close", 17)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3091 goto return_bad_resp;
3092 t->flags |= SN_CONN_CLOSED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3093 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3094
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3095
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3096 /*************************************************************
3097 * OK, that's finished for the headers. We have done what we *
3098 * could. Let's switch to the DATA state. *
3099 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3100
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3101 t->srv_state = SV_STDATA;
3102 rep->rlim = rep->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]3103 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3104
3105 /* client connection already closed or option 'forceclose' required :
3106 * we close the server's outgoing connection right now.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3107 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3108 if ((req->l == 0) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3109 (c == CL_STSHUTR || c == CL_STCLOSE || t->be->options & PR_O_FORCE_CLO)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3110 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3111 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3112
3113 /* We must ensure that the read part is still alive when switching
3114 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3115 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3116 tv_add_ifset(&rep->rex, &now, &t->be->timeout.server);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3117
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3118 shutdown(t->srv_fd, SHUT_WR);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3119 t->srv_state = SV_STSHUTW;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3120 }
3121
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3122#ifdef CONFIG_HAP_TCPSPLICE
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3123 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3124 /* TCP splicing supported by both FE and BE */
3125 tcp_splice_splicefd(t->cli_fd, t->srv_fd, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3126 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3127#endif
3128 /* if the user wants to log as soon as possible, without counting
3129 bytes from the server, then this is the right moment. */
3130 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
3131 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
Willy Tarreau8b3977f2008-01-18 11:16:32 +0100[diff] [blame^]3132 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]3133 if (t->fe->to_log & LW_REQ)
3134 http_sess_log(t);
3135 else
3136 tcp_sess_log(t);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3137 }
3138
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3139 /* Note: we must not try to cheat by jumping directly to DATA,
3140 * otherwise we would not let the client side wake up.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3141 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3142
3143 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3144 }
3145 else if (s == SV_STDATA) {
3146 /* read or write error */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3147 if (req->flags & BF_WRITE_ERROR || rep->flags & BF_READ_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3148 buffer_shutr(rep);
3149 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3150 fd_delete(t->srv_fd);
3151 if (t->srv) {
3152 t->srv->cur_sess--;
3153 t->srv->failed_resp++;
3154 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3155 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3156 t->srv_state = SV_STCLOSE;
3157 if (!(t->flags & SN_ERR_MASK))
3158 t->flags |= SN_ERR_SRVCL;
3159 if (!(t->flags & SN_FINST_MASK))
3160 t->flags |= SN_FINST_D;
3161 /* We used to have a free connection slot. Since we'll never use it,
3162 * we have to inform the server that it may be used by another session.
3163 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3164 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3165 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3166
3167 return 1;
3168 }
3169 /* last read, or end of client write */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3170 else if (rep->flags & BF_READ_NULL || c == CL_STSHUTW || c == CL_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3171 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3172 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3173 t->srv_state = SV_STSHUTR;
3174 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
3175 return 1;
3176 }
3177 /* end of client read and no more data to send */
3178 else if ((c == CL_STSHUTR || c == CL_STCLOSE) && (req->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3179 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3180 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3181 shutdown(t->srv_fd, SHUT_WR);
3182 /* We must ensure that the read part is still alive when switching
3183 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3184 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3185 tv_add_ifset(&rep->rex, &now, &t->be->timeout.server);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3186
3187 t->srv_state = SV_STSHUTW;
3188 return 1;
3189 }
3190 /* read timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3191 else if (tv_isle(&rep->rex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3192 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3193 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3194 t->srv_state = SV_STSHUTR;
3195 if (!(t->flags & SN_ERR_MASK))
3196 t->flags |= SN_ERR_SRVTO;
3197 if (!(t->flags & SN_FINST_MASK))
3198 t->flags |= SN_FINST_D;
3199 return 1;
3200 }
3201 /* write timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3202 else if (tv_isle(&req->wex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3203 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3204 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3205 shutdown(t->srv_fd, SHUT_WR);
3206 /* We must ensure that the read part is still alive when switching
3207 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3208 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3209 tv_add_ifset(&rep->rex, &now, &t->be->timeout.server);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3210 t->srv_state = SV_STSHUTW;
3211 if (!(t->flags & SN_ERR_MASK))
3212 t->flags |= SN_ERR_SRVTO;
3213 if (!(t->flags & SN_FINST_MASK))
3214 t->flags |= SN_FINST_D;
3215 return 1;
3216 }
3217
3218 /* recompute request time-outs */
3219 if (req->l == 0) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3220 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
3221 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3222 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3223 }
3224 }
3225 else { /* buffer not empty, there are still data to be transferred */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3226 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
3227 /* restart writing */
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3228 if (tv_add_ifset(&req->wex, &now, &t->be->timeout.server)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3229 /* FIXME: to prevent the server from expiring read timeouts during writes,
3230 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3231 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3232 }
3233 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3234 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3235 }
3236 }
3237
3238 /* recompute response time-outs */
3239 if (rep->l == BUFSIZE) { /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3240 if (EV_FD_COND_C(t->srv_fd, DIR_RD)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3241 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3242 }
3243 }
3244 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3245 if (EV_FD_COND_S(t->srv_fd, DIR_RD)) {
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3246 if (!tv_add_ifset(&rep->rex, &now, &t->be->timeout.server))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3247 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3248 }
3249 }
3250
3251 return 0; /* other cases change nothing */
3252 }
3253 else if (s == SV_STSHUTR) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3254 if (req->flags & BF_WRITE_ERROR) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3255 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3256 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3257 fd_delete(t->srv_fd);
3258 if (t->srv) {
3259 t->srv->cur_sess--;
3260 t->srv->failed_resp++;
3261 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3262 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3263 //close(t->srv_fd);
3264 t->srv_state = SV_STCLOSE;
3265 if (!(t->flags & SN_ERR_MASK))
3266 t->flags |= SN_ERR_SRVCL;
3267 if (!(t->flags & SN_FINST_MASK))
3268 t->flags |= SN_FINST_D;
3269 /* We used to have a free connection slot. Since we'll never use it,
3270 * we have to inform the server that it may be used by another session.
3271 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3272 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3273 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3274
3275 return 1;
3276 }
3277 else if ((c == CL_STSHUTR || c == CL_STCLOSE) && (req->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3278 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3279 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3280 fd_delete(t->srv_fd);
3281 if (t->srv)
3282 t->srv->cur_sess--;
3283 //close(t->srv_fd);
3284 t->srv_state = SV_STCLOSE;
3285 /* We used to have a free connection slot. Since we'll never use it,
3286 * we have to inform the server that it may be used by another session.
3287 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3288 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3289 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3290
3291 return 1;
3292 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3293 else if (tv_isle(&req->wex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3294 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3295 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3296 fd_delete(t->srv_fd);
3297 if (t->srv)
3298 t->srv->cur_sess--;
3299 //close(t->srv_fd);
3300 t->srv_state = SV_STCLOSE;
3301 if (!(t->flags & SN_ERR_MASK))
3302 t->flags |= SN_ERR_SRVTO;
3303 if (!(t->flags & SN_FINST_MASK))
3304 t->flags |= SN_FINST_D;
3305 /* We used to have a free connection slot. Since we'll never use it,
3306 * we have to inform the server that it may be used by another session.
3307 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3308 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3309 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3310
3311 return 1;
3312 }
3313 else if (req->l == 0) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3314 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
3315 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3316 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3317 }
3318 }
3319 else { /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3320 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
3321 /* restart writing */
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3322 if (!tv_add_ifset(&req->wex, &now, &t->be->timeout.server))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3323 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3324 }
3325 }
3326 return 0;
3327 }
3328 else if (s == SV_STSHUTW) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3329 if (rep->flags & BF_READ_ERROR) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3330 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3331 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3332 fd_delete(t->srv_fd);
3333 if (t->srv) {
3334 t->srv->cur_sess--;
3335 t->srv->failed_resp++;
3336 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3337 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3338 //close(t->srv_fd);
3339 t->srv_state = SV_STCLOSE;
3340 if (!(t->flags & SN_ERR_MASK))
3341 t->flags |= SN_ERR_SRVCL;
3342 if (!(t->flags & SN_FINST_MASK))
3343 t->flags |= SN_FINST_D;
3344 /* We used to have a free connection slot. Since we'll never use it,
3345 * we have to inform the server that it may be used by another session.
3346 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3347 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3348 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3349
3350 return 1;
3351 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3352 else if (rep->flags & BF_READ_NULL || c == CL_STSHUTW || c == CL_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3353 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3354 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3355 fd_delete(t->srv_fd);
3356 if (t->srv)
3357 t->srv->cur_sess--;
3358 //close(t->srv_fd);
3359 t->srv_state = SV_STCLOSE;
3360 /* We used to have a free connection slot. Since we'll never use it,
3361 * we have to inform the server that it may be used by another session.
3362 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3363 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3364 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3365
3366 return 1;
3367 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3368 else if (tv_isle(&rep->rex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3369 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3370 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3371 fd_delete(t->srv_fd);
3372 if (t->srv)
3373 t->srv->cur_sess--;
3374 //close(t->srv_fd);
3375 t->srv_state = SV_STCLOSE;
3376 if (!(t->flags & SN_ERR_MASK))
3377 t->flags |= SN_ERR_SRVTO;
3378 if (!(t->flags & SN_FINST_MASK))
3379 t->flags |= SN_FINST_D;
3380 /* We used to have a free connection slot. Since we'll never use it,
3381 * we have to inform the server that it may be used by another session.
3382 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3383 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3384 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3385
3386 return 1;
3387 }
3388 else if (rep->l == BUFSIZE) { /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3389 if (EV_FD_COND_C(t->srv_fd, DIR_RD)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3390 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3391 }
3392 }
3393 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3394 if (EV_FD_COND_S(t->srv_fd, DIR_RD)) {
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3395 if (!tv_add_ifset(&rep->rex, &now, &t->be->timeout.server))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3396 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3397 }
3398 }
3399 return 0;
3400 }
3401 else { /* SV_STCLOSE : nothing to do */
3402 if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
3403 int len;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3404 len = sprintf(trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3405 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]3406 write(1, trash, len);
3407 }
3408 return 0;
3409 }
3410 return 0;
3411}
3412
3413
3414/*
3415 * Produces data for the session <s> depending on its source. Expects to be
3416 * called with s->cli_state == CL_STSHUTR. Right now, only statistics can be
3417 * produced. It stops by itself by unsetting the SN_SELF_GEN flag from the
3418 * session, which it uses to keep on being called when there is free space in
3419 * the buffer, of simply by letting an empty buffer upon return. It returns 1
3420 * if it changes the session state from CL_STSHUTR, otherwise 0.
3421 */
3422int produce_content(struct session *s)
3423{
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3424 if (s->data_source == DATA_SRC_NONE) {
3425 s->flags &= ~SN_SELF_GEN;
3426 return 1;
3427 }
3428 else if (s->data_source == DATA_SRC_STATS) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3429 /* dump server statistics */
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]3430 int ret = stats_dump_http(s, s->be->uri_auth,
3431 (s->flags & SN_STAT_FMTCSV) ? 0 : STAT_FMT_HTML);
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3432 if (ret >= 0)
3433 return ret;
3434 /* -1 indicates an error */
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3435 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3436
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]3437 /* unknown data source or internal error */
3438 s->txn.status = 500;
3439 client_retnclose(s, error_message(s, HTTP_ERR_500));
3440 if (!(s->flags & SN_ERR_MASK))
3441 s->flags |= SN_ERR_PRXCOND;
3442 if (!(s->flags & SN_FINST_MASK))
3443 s->flags |= SN_FINST_R;
3444 s->flags &= ~SN_SELF_GEN;
3445 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3446}
3447
3448
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3449/* Iterate the same filter through all request headers.
3450 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3451 * Since it can manage the switch to another backend, it updates the per-proxy
3452 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3453 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3454int 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]3455{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3456 char term;
3457 char *cur_ptr, *cur_end, *cur_next;
3458 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3459 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3460 struct hdr_idx_elem *cur_hdr;
3461 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]3462
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3463 last_hdr = 0;
3464
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3465 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3466 old_idx = 0;
3467
3468 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3469 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3470 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3471 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3472 (exp->action == ACT_ALLOW ||
3473 exp->action == ACT_DENY ||
3474 exp->action == ACT_TARPIT))
3475 return 0;
3476
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3477 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3478 if (!cur_idx)
3479 break;
3480
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3481 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3482 cur_ptr = cur_next;
3483 cur_end = cur_ptr + cur_hdr->len;
3484 cur_next = cur_end + cur_hdr->cr + 1;
3485
3486 /* Now we have one header between cur_ptr and cur_end,
3487 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3488 */
3489
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3490 /* The annoying part is that pattern matching needs
3491 * that we modify the contents to null-terminate all
3492 * strings before testing them.
3493 */
3494
3495 term = *cur_end;
3496 *cur_end = '\0';
3497
3498 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3499 switch (exp->action) {
3500 case ACT_SETBE:
3501 /* It is not possible to jump a second time.
3502 * FIXME: should we return an HTTP/500 here so that
3503 * the admin knows there's a problem ?
3504 */
3505 if (t->be != t->fe)
3506 break;
3507
3508 /* Swithing Proxy */
3509 t->be = (struct proxy *) exp->replace;
3510
3511 /* right now, the backend switch is not too much complicated
3512 * because we have associated req_cap and rsp_cap to the
3513 * frontend, and the beconn will be updated later.
3514 */
3515
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3516 t->rep->rto = t->req->wto = t->be->timeout.server;
3517 t->req->cto = t->be->timeout.connect;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3518 t->conn_retries = t->be->conn_retries;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3519 last_hdr = 1;
3520 break;
3521
3522 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3523 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3524 last_hdr = 1;
3525 break;
3526
3527 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3528 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3529 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3530 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3531 break;
3532
3533 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3534 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3535 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3536 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3537 break;
3538
3539 case ACT_REPLACE:
3540 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3541 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3542 /* FIXME: if the user adds a newline in the replacement, the
3543 * index will not be recalculated for now, and the new line
3544 * will not be counted as a new header.
3545 */
3546
3547 cur_end += delta;
3548 cur_next += delta;
3549 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3550 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3551 break;
3552
3553 case ACT_REMOVE:
3554 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
3555 cur_next += delta;
3556
3557 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3558 txn->req.eoh += delta;
3559 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3560 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3561 cur_hdr->len = 0;
3562 cur_end = NULL; /* null-term has been rewritten */
3563 break;
3564
3565 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3566 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3567 if (cur_end)
3568 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3569
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3570 /* keep the link from this header to next one in case of later
3571 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3572 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3573 old_idx = cur_idx;
3574 }
3575 return 0;
3576}
3577
3578
3579/* Apply the filter to the request line.
3580 * Returns 0 if nothing has been done, 1 if the filter has been applied,
3581 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3582 * Since it can manage the switch to another backend, it updates the per-proxy
3583 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3584 */
3585int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
3586{
3587 char term;
3588 char *cur_ptr, *cur_end;
3589 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3590 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3591 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3592
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3593
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3594 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3595 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3596 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3597 (exp->action == ACT_ALLOW ||
3598 exp->action == ACT_DENY ||
3599 exp->action == ACT_TARPIT))
3600 return 0;
3601 else if (exp->action == ACT_REMOVE)
3602 return 0;
3603
3604 done = 0;
3605
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3606 cur_ptr = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3607 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3608
3609 /* Now we have the request line between cur_ptr and cur_end */
3610
3611 /* The annoying part is that pattern matching needs
3612 * that we modify the contents to null-terminate all
3613 * strings before testing them.
3614 */
3615
3616 term = *cur_end;
3617 *cur_end = '\0';
3618
3619 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3620 switch (exp->action) {
3621 case ACT_SETBE:
3622 /* It is not possible to jump a second time.
3623 * FIXME: should we return an HTTP/500 here so that
3624 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3625 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3626 if (t->be != t->fe)
3627 break;
3628
3629 /* Swithing Proxy */
3630 t->be = (struct proxy *) exp->replace;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3631
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3632 /* right now, the backend switch is not too much complicated
3633 * because we have associated req_cap and rsp_cap to the
3634 * frontend, and the beconn will be updated later.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3635 */
3636
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]3637 t->rep->rto = t->req->wto = t->be->timeout.server;
3638 t->req->cto = t->be->timeout.connect;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3639 t->conn_retries = t->be->conn_retries;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3640 done = 1;
3641 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3642
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3643 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3644 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3645 done = 1;
3646 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3647
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3648 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3649 txn->flags |= TX_CLDENY;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3650 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3651 done = 1;
3652 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3653
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3654 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3655 txn->flags |= TX_CLTARPIT;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3656 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3657 done = 1;
3658 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3659
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3660 case ACT_REPLACE:
3661 *cur_end = term; /* restore the string terminator */
3662 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3663 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3664 /* FIXME: if the user adds a newline in the replacement, the
3665 * index will not be recalculated for now, and the new line
3666 * will not be counted as a new header.
3667 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3668
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3669 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3670 cur_end += delta;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3671
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3672 txn->req.sol = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3673 cur_end = (char *)http_parse_reqline(&txn->req, req->data,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3674 HTTP_MSG_RQMETH,
3675 cur_ptr, cur_end + 1,
3676 NULL, NULL);
3677 if (unlikely(!cur_end))
3678 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3679
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3680 /* we have a full request and we know that we have either a CR
3681 * or an LF at <ptr>.
3682 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3683 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
3684 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]3685 /* there is no point trying this regex on headers */
3686 return 1;
3687 }
3688 }
3689 *cur_end = term; /* restore the string terminator */
3690 return done;
3691}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]3692
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3693
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3694
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3695/*
3696 * Apply all the req filters <exp> to all headers in buffer <req> of session <t>.
3697 * 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]3698 * unparsable request. Since it can manage the switch to another backend, it
3699 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3700 */
3701int apply_filters_to_request(struct session *t, struct buffer *req, struct hdr_exp *exp)
3702{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3703 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3704 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3705 while (exp && !(txn->flags & (TX_CLDENY|TX_CLTARPIT))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3706 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3707
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3708 /*
3709 * The interleaving of transformations and verdicts
3710 * makes it difficult to decide to continue or stop
3711 * the evaluation.
3712 */
3713
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3714 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3715 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
3716 exp->action == ACT_TARPIT || exp->action == ACT_PASS)) {
3717 exp = exp->next;
3718 continue;
3719 }
3720
3721 /* Apply the filter to the request line. */
3722 ret = apply_filter_to_req_line(t, req, exp);
3723 if (unlikely(ret < 0))
3724 return -1;
3725
3726 if (likely(ret == 0)) {
3727 /* The filter did not match the request, it can be
3728 * iterated through all headers.
3729 */
3730 apply_filter_to_req_headers(t, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3731 }
3732 exp = exp->next;
3733 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3734 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3735}
3736
3737
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3738
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3739/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]3740 * Manage client-side cookie. It can impact performance by about 2% so it is
3741 * desirable to call it only when needed.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3742 */
3743void manage_client_side_cookies(struct session *t, struct buffer *req)
3744{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3745 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3746 char *p1, *p2, *p3, *p4;
3747 char *del_colon, *del_cookie, *colon;
3748 int app_cookies;
3749
3750 appsess *asession_temp = NULL;
3751 appsess local_asession;
3752
3753 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3754 int cur_idx, old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3755
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3756 /* Iterate through the headers.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3757 * we start with the start line.
3758 */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]3759 old_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3760 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3761
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3762 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3763 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3764 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3765
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3766 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3767 cur_ptr = cur_next;
3768 cur_end = cur_ptr + cur_hdr->len;
3769 cur_next = cur_end + cur_hdr->cr + 1;
3770
3771 /* We have one full header between cur_ptr and cur_end, and the
3772 * next header starts at cur_next. We're only interested in
3773 * "Cookie:" headers.
3774 */
3775
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3776 val = http_header_match2(cur_ptr, cur_end, "Cookie", 6);
3777 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3778 old_idx = cur_idx;
3779 continue;
3780 }
3781
3782 /* Now look for cookies. Conforming to RFC2109, we have to support
3783 * attributes whose name begin with a '$', and associate them with
3784 * the right cookie, if we want to delete this cookie.
3785 * So there are 3 cases for each cookie read :
3786 * 1) it's a special attribute, beginning with a '$' : ignore it.
3787 * 2) it's a server id cookie that we *MAY* want to delete : save
3788 * some pointers on it (last semi-colon, beginning of cookie...)
3789 * 3) it's an application cookie : we *MAY* have to delete a previous
3790 * "special" cookie.
3791 * At the end of loop, if a "special" cookie remains, we may have to
3792 * remove it. If no application cookie persists in the header, we
3793 * *MUST* delete it
3794 */
3795
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]3796 colon = p1 = cur_ptr + val; /* first non-space char after 'Cookie:' */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3797
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3798 /* del_cookie == NULL => nothing to be deleted */
3799 del_colon = del_cookie = NULL;
3800 app_cookies = 0;
3801
3802 while (p1 < cur_end) {
3803 /* skip spaces and colons, but keep an eye on these ones */
3804 while (p1 < cur_end) {
3805 if (*p1 == ';' || *p1 == ',')
3806 colon = p1;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3807 else if (!isspace((unsigned char)*p1))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3808 break;
3809 p1++;
3810 }
3811
3812 if (p1 == cur_end)
3813 break;
3814
3815 /* p1 is at the beginning of the cookie name */
3816 p2 = p1;
3817 while (p2 < cur_end && *p2 != '=')
3818 p2++;
3819
3820 if (p2 == cur_end)
3821 break;
3822
3823 p3 = p2 + 1; /* skips the '=' sign */
3824 if (p3 == cur_end)
3825 break;
3826
3827 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]3828 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';' && *p4 != ',')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3829 p4++;
3830
3831 /* here, we have the cookie name between p1 and p2,
3832 * and its value between p3 and p4.
3833 * we can process it :
3834 *
3835 * Cookie: NAME=VALUE;
3836 * | || || |
3837 * | || || +--> p4
3838 * | || |+-------> p3
3839 * | || +--------> p2
3840 * | |+------------> p1
3841 * | +-------------> colon
3842 * +--------------------> cur_ptr
3843 */
3844
3845 if (*p1 == '$') {
3846 /* skip this one */
3847 }
3848 else {
3849 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3850 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3851 txn->cli_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3852 (p4 - p1 >= t->fe->capture_namelen) &&
3853 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3854 int log_len = p4 - p1;
3855
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]3856 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3857 Alert("HTTP logging : out of memory.\n");
3858 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3859 if (log_len > t->fe->capture_len)
3860 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3861 memcpy(txn->cli_cookie, p1, log_len);
3862 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3863 }
3864 }
3865
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3866 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
3867 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3868 /* Cool... it's the right one */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3869 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3870 char *delim;
3871
3872 /* if we're in cookie prefix mode, we'll search the delimitor so that we
3873 * have the server ID betweek p3 and delim, and the original cookie between
3874 * delim+1 and p4. Otherwise, delim==p4 :
3875 *
3876 * Cookie: NAME=SRV~VALUE;
3877 * | || || | |
3878 * | || || | +--> p4
3879 * | || || +--------> delim
3880 * | || |+-----------> p3
3881 * | || +------------> p2
3882 * | |+----------------> p1
3883 * | +-----------------> colon
3884 * +------------------------> cur_ptr
3885 */
3886
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3887 if (t->be->options & PR_O_COOK_PFX) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3888 for (delim = p3; delim < p4; delim++)
3889 if (*delim == COOKIE_DELIM)
3890 break;
3891 }
3892 else
3893 delim = p4;
3894
3895
3896 /* Here, we'll look for the first running server which supports the cookie.
3897 * This allows to share a same cookie between several servers, for example
3898 * to dedicate backup servers to specific servers only.
3899 * However, to prevent clients from sticking to cookie-less backup server
3900 * when they have incidentely learned an empty cookie, we simply ignore
3901 * empty cookies and mark them as invalid.
3902 */
3903 if (delim == p3)
3904 srv = NULL;
3905
3906 while (srv) {
Willy Tarreau92f2ab12007-02-02 22:14:47 +0100[diff] [blame]3907 if (srv->cookie && (srv->cklen == delim - p3) &&
3908 !memcmp(p3, srv->cookie, delim - p3)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3909 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3910 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3911 txn->flags &= ~TX_CK_MASK;
3912 txn->flags |= TX_CK_VALID;
3913 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3914 t->srv = srv;
3915 break;
3916 } else {
3917 /* we found a server, but it's down */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3918 txn->flags &= ~TX_CK_MASK;
3919 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3920 }
3921 }
3922 srv = srv->next;
3923 }
3924
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3925 if (!srv && !(txn->flags & TX_CK_DOWN)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3926 /* no server matched this cookie */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3927 txn->flags &= ~TX_CK_MASK;
3928 txn->flags |= TX_CK_INVALID;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3929 }
3930
3931 /* depending on the cookie mode, we may have to either :
3932 * - delete the complete cookie if we're in insert+indirect mode, so that
3933 * the server never sees it ;
3934 * - remove the server id from the cookie value, and tag the cookie as an
3935 * application cookie so that it does not get accidentely removed later,
3936 * if we're in cookie prefix mode
3937 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3938 if ((t->be->options & PR_O_COOK_PFX) && (delim != p4)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3939 int delta; /* negative */
3940
3941 delta = buffer_replace2(req, p3, delim + 1, NULL, 0);
3942 p4 += delta;
3943 cur_end += delta;
3944 cur_next += delta;
3945 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3946 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3947
3948 del_cookie = del_colon = NULL;
3949 app_cookies++; /* protect the header from deletion */
3950 }
3951 else if (del_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3952 (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]3953 del_cookie = p1;
3954 del_colon = colon;
3955 }
3956 } else {
3957 /* now we know that we must keep this cookie since it's
3958 * not ours. But if we wanted to delete our cookie
3959 * earlier, we cannot remove the complete header, but we
3960 * can remove the previous block itself.
3961 */
3962 app_cookies++;
3963
3964 if (del_cookie != NULL) {
3965 int delta; /* negative */
3966
3967 delta = buffer_replace2(req, del_cookie, p1, NULL, 0);
3968 p4 += delta;
3969 cur_end += delta;
3970 cur_next += delta;
3971 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3972 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3973 del_cookie = del_colon = NULL;
3974 }
3975 }
3976
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3977 if ((t->be->appsession_name != NULL) &&
3978 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3979 /* first, let's see if the cookie is our appcookie*/
3980
3981 /* Cool... it's the right one */
3982
3983 asession_temp = &local_asession;
3984
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3985 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3986 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
3987 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
3988 return;
3989 }
3990
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3991 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
3992 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3993 asession_temp->serverid = NULL;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3994
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3995 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]3996 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
3997 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]3998 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3999 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4000 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4001 Alert("Not enough memory process_cli():asession:calloc().\n");
4002 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4003 return;
4004 }
4005
4006 asession_temp->sessid = local_asession.sessid;
4007 asession_temp->serverid = local_asession.serverid;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4008 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4009 } else {
4010 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4011 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4012 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4013 if (asession_temp->serverid == NULL) {
4014 Alert("Found Application Session without matching server.\n");
4015 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4016 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4017 while (srv) {
4018 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4019 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4020 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4021 txn->flags &= ~TX_CK_MASK;
4022 txn->flags |= TX_CK_VALID;
4023 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4024 t->srv = srv;
4025 break;
4026 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4027 txn->flags &= ~TX_CK_MASK;
4028 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4029 }
4030 }
4031 srv = srv->next;
4032 }/* end while(srv) */
4033 }/* end else if server == NULL */
4034
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]4035 tv_add(&asession_temp->expire, &now, &t->be->timeout.appsession);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4036 }/* end if ((t->proxy->appsession_name != NULL) ... */
4037 }
4038
4039 /* we'll have to look for another cookie ... */
4040 p1 = p4;
4041 } /* while (p1 < cur_end) */
4042
4043 /* There's no more cookie on this line.
4044 * We may have marked the last one(s) for deletion.
4045 * We must do this now in two ways :
4046 * - if there is no app cookie, we simply delete the header ;
4047 * - if there are app cookies, we must delete the end of the
4048 * string properly, including the colon/semi-colon before
4049 * the cookie name.
4050 */
4051 if (del_cookie != NULL) {
4052 int delta;
4053 if (app_cookies) {
4054 delta = buffer_replace2(req, del_colon, cur_end, NULL, 0);
4055 cur_end = del_colon;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4056 cur_hdr->len += delta;
4057 } else {
4058 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4059
4060 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4061 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4062 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4063 cur_hdr->len = 0;
4064 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]4065 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4066 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4067 }
4068
4069 /* keep the link from this header to next one */
4070 old_idx = cur_idx;
4071 } /* end of cookie processing on this header */
4072}
4073
4074
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4075/* Iterate the same filter through all response headers contained in <rtr>.
4076 * Returns 1 if this filter can be stopped upon return, otherwise 0.
4077 */
4078int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4079{
4080 char term;
4081 char *cur_ptr, *cur_end, *cur_next;
4082 int cur_idx, old_idx, last_hdr;
4083 struct http_txn *txn = &t->txn;
4084 struct hdr_idx_elem *cur_hdr;
4085 int len, delta;
4086
4087 last_hdr = 0;
4088
4089 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4090 old_idx = 0;
4091
4092 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4093 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4094 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4095 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4096 (exp->action == ACT_ALLOW ||
4097 exp->action == ACT_DENY))
4098 return 0;
4099
4100 cur_idx = txn->hdr_idx.v[old_idx].next;
4101 if (!cur_idx)
4102 break;
4103
4104 cur_hdr = &txn->hdr_idx.v[cur_idx];
4105 cur_ptr = cur_next;
4106 cur_end = cur_ptr + cur_hdr->len;
4107 cur_next = cur_end + cur_hdr->cr + 1;
4108
4109 /* Now we have one header between cur_ptr and cur_end,
4110 * and the next header starts at cur_next.
4111 */
4112
4113 /* The annoying part is that pattern matching needs
4114 * that we modify the contents to null-terminate all
4115 * strings before testing them.
4116 */
4117
4118 term = *cur_end;
4119 *cur_end = '\0';
4120
4121 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4122 switch (exp->action) {
4123 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4124 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4125 last_hdr = 1;
4126 break;
4127
4128 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4129 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4130 last_hdr = 1;
4131 break;
4132
4133 case ACT_REPLACE:
4134 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4135 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4136 /* FIXME: if the user adds a newline in the replacement, the
4137 * index will not be recalculated for now, and the new line
4138 * will not be counted as a new header.
4139 */
4140
4141 cur_end += delta;
4142 cur_next += delta;
4143 cur_hdr->len += delta;
4144 txn->rsp.eoh += delta;
4145 break;
4146
4147 case ACT_REMOVE:
4148 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4149 cur_next += delta;
4150
4151 /* FIXME: this should be a separate function */
4152 txn->rsp.eoh += delta;
4153 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4154 txn->hdr_idx.used--;
4155 cur_hdr->len = 0;
4156 cur_end = NULL; /* null-term has been rewritten */
4157 break;
4158
4159 }
4160 }
4161 if (cur_end)
4162 *cur_end = term; /* restore the string terminator */
4163
4164 /* keep the link from this header to next one in case of later
4165 * removal of next header.
4166 */
4167 old_idx = cur_idx;
4168 }
4169 return 0;
4170}
4171
4172
4173/* Apply the filter to the status line in the response buffer <rtr>.
4174 * Returns 0 if nothing has been done, 1 if the filter has been applied,
4175 * or -1 if a replacement resulted in an invalid status line.
4176 */
4177int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4178{
4179 char term;
4180 char *cur_ptr, *cur_end;
4181 int done;
4182 struct http_txn *txn = &t->txn;
4183 int len, delta;
4184
4185
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4186 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4187 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4188 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4189 (exp->action == ACT_ALLOW ||
4190 exp->action == ACT_DENY))
4191 return 0;
4192 else if (exp->action == ACT_REMOVE)
4193 return 0;
4194
4195 done = 0;
4196
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4197 cur_ptr = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4198 cur_end = cur_ptr + txn->rsp.sl.rq.l;
4199
4200 /* Now we have the status line between cur_ptr and cur_end */
4201
4202 /* The annoying part is that pattern matching needs
4203 * that we modify the contents to null-terminate all
4204 * strings before testing them.
4205 */
4206
4207 term = *cur_end;
4208 *cur_end = '\0';
4209
4210 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4211 switch (exp->action) {
4212 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4213 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4214 done = 1;
4215 break;
4216
4217 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4218 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4219 done = 1;
4220 break;
4221
4222 case ACT_REPLACE:
4223 *cur_end = term; /* restore the string terminator */
4224 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4225 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4226 /* FIXME: if the user adds a newline in the replacement, the
4227 * index will not be recalculated for now, and the new line
4228 * will not be counted as a new header.
4229 */
4230
4231 txn->rsp.eoh += delta;
4232 cur_end += delta;
4233
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4234 txn->rsp.sol = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4235 cur_end = (char *)http_parse_stsline(&txn->rsp, rtr->data,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]4236 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4237 cur_ptr, cur_end + 1,
4238 NULL, NULL);
4239 if (unlikely(!cur_end))
4240 return -1;
4241
4242 /* we have a full respnse and we know that we have either a CR
4243 * or an LF at <ptr>.
4244 */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4245 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]4246 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.rq.l, *cur_end == '\r');
4247 /* there is no point trying this regex on headers */
4248 return 1;
4249 }
4250 }
4251 *cur_end = term; /* restore the string terminator */
4252 return done;
4253}
4254
4255
4256
4257/*
4258 * Apply all the resp filters <exp> to all headers in buffer <rtr> of session <t>.
4259 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
4260 * unparsable response.
4261 */
4262int apply_filters_to_response(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4263{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4264 struct http_txn *txn = &t->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4265 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4266 while (exp && !(txn->flags & TX_SVDENY)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4267 int ret;
4268
4269 /*
4270 * The interleaving of transformations and verdicts
4271 * makes it difficult to decide to continue or stop
4272 * the evaluation.
4273 */
4274
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4275 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4276 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4277 exp->action == ACT_PASS)) {
4278 exp = exp->next;
4279 continue;
4280 }
4281
4282 /* Apply the filter to the status line. */
4283 ret = apply_filter_to_sts_line(t, rtr, exp);
4284 if (unlikely(ret < 0))
4285 return -1;
4286
4287 if (likely(ret == 0)) {
4288 /* The filter did not match the response, it can be
4289 * iterated through all headers.
4290 */
4291 apply_filter_to_resp_headers(t, rtr, exp);
4292 }
4293 exp = exp->next;
4294 }
4295 return 0;
4296}
4297
4298
4299
4300/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]4301 * Manage server-side cookies. It can impact performance by about 2% so it is
4302 * desirable to call it only when needed.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4303 */
4304void manage_server_side_cookies(struct session *t, struct buffer *rtr)
4305{
4306 struct http_txn *txn = &t->txn;
4307 char *p1, *p2, *p3, *p4;
4308
4309 appsess *asession_temp = NULL;
4310 appsess local_asession;
4311
4312 char *cur_ptr, *cur_end, *cur_next;
4313 int cur_idx, old_idx, delta;
4314
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4315 /* Iterate through the headers.
4316 * we start with the start line.
4317 */
4318 old_idx = 0;
4319 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4320
4321 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
4322 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4323 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4324
4325 cur_hdr = &txn->hdr_idx.v[cur_idx];
4326 cur_ptr = cur_next;
4327 cur_end = cur_ptr + cur_hdr->len;
4328 cur_next = cur_end + cur_hdr->cr + 1;
4329
4330 /* We have one full header between cur_ptr and cur_end, and the
4331 * next header starts at cur_next. We're only interested in
4332 * "Cookie:" headers.
4333 */
4334
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4335 val = http_header_match2(cur_ptr, cur_end, "Set-Cookie", 10);
4336 if (!val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4337 old_idx = cur_idx;
4338 continue;
4339 }
4340
4341 /* OK, right now we know we have a set-cookie at cur_ptr */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4342 txn->flags |= TX_SCK_ANY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4343
4344
4345 /* maybe we only wanted to see if there was a set-cookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4346 if (t->be->cookie_name == NULL &&
4347 t->be->appsession_name == NULL &&
4348 t->be->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4349 return;
4350
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4351 p1 = cur_ptr + val; /* first non-space char after 'Set-Cookie:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4352
4353 while (p1 < cur_end) { /* in fact, we'll break after the first cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4354 if (p1 == cur_end || *p1 == ';') /* end of cookie */
4355 break;
4356
4357 /* p1 is at the beginning of the cookie name */
4358 p2 = p1;
4359
4360 while (p2 < cur_end && *p2 != '=' && *p2 != ';')
4361 p2++;
4362
4363 if (p2 == cur_end || *p2 == ';') /* next cookie */
4364 break;
4365
4366 p3 = p2 + 1; /* skip the '=' sign */
4367 if (p3 == cur_end)
4368 break;
4369
4370 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4371 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';')
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4372 p4++;
4373
4374 /* here, we have the cookie name between p1 and p2,
4375 * and its value between p3 and p4.
4376 * we can process it.
4377 */
4378
4379 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4380 if (t->be->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4381 txn->srv_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4382 (p4 - p1 >= t->be->capture_namelen) &&
4383 memcmp(p1, t->be->capture_name, t->be->capture_namelen) == 0) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4384 int log_len = p4 - p1;
4385
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]4386 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4387 Alert("HTTP logging : out of memory.\n");
4388 }
4389
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4390 if (log_len > t->be->capture_len)
4391 log_len = t->be->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4392 memcpy(txn->srv_cookie, p1, log_len);
4393 txn->srv_cookie[log_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4394 }
4395
4396 /* now check if we need to process it for persistence */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4397 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4398 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4399 /* Cool... it's the right one */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4400 txn->flags |= TX_SCK_SEEN;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4401
4402 /* If the cookie is in insert mode on a known server, we'll delete
4403 * this occurrence because we'll insert another one later.
4404 * We'll delete it too if the "indirect" option is set and we're in
4405 * a direct access. */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4406 if (((t->srv) && (t->be->options & PR_O_COOK_INS)) ||
4407 ((t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_IND))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4408 /* this header must be deleted */
4409 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4410 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4411 txn->hdr_idx.used--;
4412 cur_hdr->len = 0;
4413 cur_next += delta;
4414 txn->rsp.eoh += delta;
4415
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4416 txn->flags |= TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4417 }
4418 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4419 (t->be->options & PR_O_COOK_RW)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4420 /* replace bytes p3->p4 with the cookie name associated
4421 * with this server since we know it.
4422 */
4423 delta = buffer_replace2(rtr, p3, p4, t->srv->cookie, t->srv->cklen);
4424 cur_hdr->len += delta;
4425 cur_next += delta;
4426 txn->rsp.eoh += delta;
4427
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4428 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4429 }
4430 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4431 (t->be->options & PR_O_COOK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4432 /* insert the cookie name associated with this server
4433 * before existing cookie, and insert a delimitor between them..
4434 */
4435 delta = buffer_replace2(rtr, p3, p3, t->srv->cookie, t->srv->cklen + 1);
4436 cur_hdr->len += delta;
4437 cur_next += delta;
4438 txn->rsp.eoh += delta;
4439
4440 p3[t->srv->cklen] = COOKIE_DELIM;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4441 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4442 }
4443 }
4444 /* next, let's see if the cookie is our appcookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4445 else if ((t->be->appsession_name != NULL) &&
4446 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4447
4448 /* Cool... it's the right one */
4449
4450 size_t server_id_len = strlen(t->srv->id) + 1;
4451 asession_temp = &local_asession;
4452
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4453 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4454 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4455 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4456 return;
4457 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4458 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4459 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4460 asession_temp->serverid = NULL;
4461
4462 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4463 if (appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid) == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4464 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4465 Alert("Not enough Memory process_srv():asession:calloc().\n");
4466 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
4467 return;
4468 }
4469 asession_temp->sessid = local_asession.sessid;
4470 asession_temp->serverid = local_asession.serverid;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4471 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
4472 } else {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4473 /* free wasted memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4474 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4475 }
4476
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4477 if (asession_temp->serverid == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4478 if ((asession_temp->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4479 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4480 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4481 return;
4482 }
4483 asession_temp->serverid[0] = '\0';
4484 }
4485
4486 if (asession_temp->serverid[0] == '\0')
4487 memcpy(asession_temp->serverid, t->srv->id, server_id_len);
4488
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]4489 tv_add(&asession_temp->expire, &now, &t->be->timeout.appsession);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4490
4491#if defined(DEBUG_HASH)
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4492 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4493#endif
4494 }/* end if ((t->proxy->appsession_name != NULL) ... */
4495 break; /* we don't want to loop again since there cannot be another cookie on the same line */
4496 } /* we're now at the end of the cookie value */
4497
4498 /* keep the link from this header to next one */
4499 old_idx = cur_idx;
4500 } /* end of cookie processing on this header */
4501}
4502
4503
4504
4505/*
4506 * Check if response is cacheable or not. Updates t->flags.
4507 */
4508void check_response_for_cacheability(struct session *t, struct buffer *rtr)
4509{
4510 struct http_txn *txn = &t->txn;
4511 char *p1, *p2;
4512
4513 char *cur_ptr, *cur_end, *cur_next;
4514 int cur_idx;
4515
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]4516 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4517 return;
4518
4519 /* Iterate through the headers.
4520 * we start with the start line.
4521 */
4522 cur_idx = 0;
4523 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4524
4525 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4526 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4527 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4528
4529 cur_hdr = &txn->hdr_idx.v[cur_idx];
4530 cur_ptr = cur_next;
4531 cur_end = cur_ptr + cur_hdr->len;
4532 cur_next = cur_end + cur_hdr->cr + 1;
4533
4534 /* We have one full header between cur_ptr and cur_end, and the
4535 * next header starts at cur_next. We're only interested in
4536 * "Cookie:" headers.
4537 */
4538
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4539 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
4540 if (val) {
4541 if ((cur_end - (cur_ptr + val) >= 8) &&
4542 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
4543 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
4544 return;
4545 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4546 }
4547
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4548 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
4549 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4550 continue;
4551
4552 /* OK, right now we know we have a cache-control header at cur_ptr */
4553
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4554 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4555
4556 if (p1 >= cur_end) /* no more info */
4557 continue;
4558
4559 /* p1 is at the beginning of the value */
4560 p2 = p1;
4561
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4562 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4563 p2++;
4564
4565 /* we have a complete value between p1 and p2 */
4566 if (p2 < cur_end && *p2 == '=') {
4567 /* we have something of the form no-cache="set-cookie" */
4568 if ((cur_end - p1 >= 21) &&
4569 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
4570 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4571 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4572 continue;
4573 }
4574
4575 /* OK, so we know that either p2 points to the end of string or to a comma */
4576 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
4577 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
4578 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
4579 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4580 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4581 return;
4582 }
4583
4584 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4585 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4586 continue;
4587 }
4588 }
4589}
4590
4591
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4592/*
4593 * Try to retrieve a known appsession in the URI, then the associated server.
4594 * If the server is found, it's assigned to the session.
4595 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4596void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4597{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4598 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4599 appsess *asession_temp = NULL;
4600 appsess local_asession;
4601 char *request_line;
4602
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4603 if (t->be->appsession_name == NULL ||
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]4604 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST) ||
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4605 (request_line = memchr(begin, ';', len)) == NULL ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4606 ((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]4607 return;
4608
4609 /* skip ';' */
4610 request_line++;
4611
4612 /* look if we have a jsessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4613 if (strncasecmp(request_line, t->be->appsession_name, t->be->appsession_name_len) != 0)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4614 return;
4615
4616 /* skip jsessionid= */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4617 request_line += t->be->appsession_name_len + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4618
4619 /* First try if we already have an appsession */
4620 asession_temp = &local_asession;
4621
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4622 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4623 Alert("Not enough memory process_cli():asession_temp->sessid:calloc().\n");
4624 send_log(t->be, LOG_ALERT, "Not enough Memory process_cli():asession_temp->sessid:calloc().\n");
4625 return;
4626 }
4627
4628 /* Copy the sessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4629 memcpy(asession_temp->sessid, request_line, t->be->appsession_len);
4630 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4631 asession_temp->serverid = NULL;
4632
4633 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4634 if (appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid) == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4635 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4636 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4637 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4638 Alert("Not enough memory process_cli():asession:calloc().\n");
4639 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4640 return;
4641 }
4642 asession_temp->sessid = local_asession.sessid;
4643 asession_temp->serverid = local_asession.serverid;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4644 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4645 }
4646 else {
4647 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4648 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4649 }
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4650
Willy Tarreaud7c30f92007-12-03 01:38:36 +0100[diff] [blame]4651 tv_add(&asession_temp->expire, &now, &t->be->timeout.appsession);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4652 asession_temp->request_count++;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4653
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4654#if defined(DEBUG_HASH)
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4655 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4656#endif
4657 if (asession_temp->serverid == NULL) {
4658 Alert("Found Application Session without matching server.\n");
4659 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4660 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4661 while (srv) {
4662 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4663 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4664 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4665 txn->flags &= ~TX_CK_MASK;
4666 txn->flags |= TX_CK_VALID;
4667 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4668 t->srv = srv;
4669 break;
4670 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4671 txn->flags &= ~TX_CK_MASK;
4672 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4673 }
4674 }
4675 srv = srv->next;
4676 }
4677 }
4678}
4679
4680
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4681/*
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4682 * In a GET or HEAD request, check if the requested URI matches the stats uri
4683 * for the current backend, and if an authorization has been passed and is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4684 *
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4685 * 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]4686 * 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]4687 * produce_content() can be called to start sending data.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4688 *
4689 * Returns 1 if the session's state changes, otherwise 0.
4690 */
4691int stats_check_uri_auth(struct session *t, struct proxy *backend)
4692{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4693 struct http_txn *txn = &t->txn;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4694 struct uri_auth *uri_auth = backend->uri_auth;
4695 struct user_auth *user;
4696 int authenticated, cur_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4697 char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4698
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4699 /* check URI size */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4700 if (uri_auth->uri_len > txn->req.sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4701 return 0;
4702
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4703 h = t->req->data + txn->req.sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4704
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]4705 /* the URI is in h */
4706 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4707 return 0;
4708
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]4709 h += uri_auth->uri_len;
4710 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 3) {
4711 if (memcmp(h, ";up", 3) == 0) {
4712 t->flags |= SN_STAT_HIDEDWN;
4713 break;
4714 }
4715 h++;
4716 }
4717
4718 if (uri_auth->refresh) {
4719 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4720 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 10) {
4721 if (memcmp(h, ";norefresh", 10) == 0) {
4722 t->flags |= SN_STAT_NORFRSH;
4723 break;
4724 }
4725 h++;
4726 }
4727 }
4728
Willy Tarreau55bb8452007-10-17 18:44:57 +0200[diff] [blame]4729 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
4730 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 4) {
4731 if (memcmp(h, ";csv", 4) == 0) {
4732 t->flags |= SN_STAT_FMTCSV;
4733 break;
4734 }
4735 h++;
4736 }
4737
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4738 /* we are in front of a interceptable URI. Let's check
4739 * if there's an authentication and if it's valid.
4740 */
4741 user = uri_auth->users;
4742 if (!user) {
4743 /* no user auth required, it's OK */
4744 authenticated = 1;
4745 } else {
4746 authenticated = 0;
4747
4748 /* a user list is defined, we have to check.
4749 * skip 21 chars for "Authorization: Basic ".
4750 */
4751
4752 /* FIXME: this should move to an earlier place */
4753 cur_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4754 h = t->req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
4755 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4756 int len = txn->hdr_idx.v[cur_idx].len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4757 if (len > 14 &&
4758 !strncasecmp("Authorization:", h, 14)) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4759 txn->auth_hdr.str = h;
4760 txn->auth_hdr.len = len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4761 break;
4762 }
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4763 h += len + txn->hdr_idx.v[cur_idx].cr + 1;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4764 }
4765
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4766 if (txn->auth_hdr.len < 21 ||
4767 memcmp(txn->auth_hdr.str + 14, " Basic ", 7))
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4768 user = NULL;
4769
4770 while (user) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4771 if ((txn->auth_hdr.len == user->user_len + 14 + 7)
4772 && !memcmp(txn->auth_hdr.str + 14 + 7,
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4773 user->user_pwd, user->user_len)) {
4774 authenticated = 1;
4775 break;
4776 }
4777 user = user->next;
4778 }
4779 }
4780
4781 if (!authenticated) {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4782 struct chunk msg;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4783
4784 /* no need to go further */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4785 msg.str = trash;
4786 msg.len = sprintf(trash, HTTP_401_fmt, uri_auth->auth_realm);
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4787 txn->status = 401;
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]4788 client_retnclose(t, &msg);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4789 if (!(t->flags & SN_ERR_MASK))
4790 t->flags |= SN_ERR_PRXCOND;
4791 if (!(t->flags & SN_FINST_MASK))
4792 t->flags |= SN_FINST_R;
4793 return 1;
4794 }
4795
4796 /* The request is valid, the user is authenticate. Let's start sending
4797 * data.
4798 */
4799 t->cli_state = CL_STSHUTR;
4800 t->req->rlim = t->req->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]4801 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4802 t->data_source = DATA_SRC_STATS;
4803 t->data_state = DATA_ST_INIT;
4804 produce_content(t);
4805 return 1;
4806}
4807
4808
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4809/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4810 * Print a debug line with a header
4811 */
4812void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
4813{
4814 int len, max;
4815 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
4816 dir, (unsigned short)t->cli_fd, (unsigned short)t->srv_fd);
4817 max = end - start;
4818 UBOUND(max, sizeof(trash) - len - 1);
4819 len += strlcpy2(trash + len, start, max + 1);
4820 trash[len++] = '\n';
4821 write(1, trash, len);
4822}
4823
4824
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4825/************************************************************************/
4826/* The code below is dedicated to ACL parsing and matching */
4827/************************************************************************/
4828
4829
4830
4831
4832/* 1. Check on METHOD
4833 * We use the pre-parsed method if it is known, and store its number as an
4834 * integer. If it is unknown, we use the pointer and the length.
4835 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4836static int acl_parse_meth(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4837{
4838 int len, meth;
4839
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4840 len = strlen(*text);
4841 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4842
4843 pattern->val.i = meth;
4844 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4845 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4846 if (!pattern->ptr.str)
4847 return 0;
4848 pattern->len = len;
4849 }
4850 return 1;
4851}
4852
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4853static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4854acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, int dir,
4855 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4856{
4857 int meth;
4858 struct http_txn *txn = l7;
4859
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4860 if (txn->req.msg_state != HTTP_MSG_BODY)
4861 return 0;
4862
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4863 meth = txn->meth;
4864 test->i = meth;
4865 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4866 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4867 /* ensure the indexes are not affected */
4868 return 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4869 test->len = txn->req.sl.rq.m_l;
4870 test->ptr = txn->req.sol;
4871 }
4872 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4873 return 1;
4874}
4875
4876static int acl_match_meth(struct acl_test *test, struct acl_pattern *pattern)
4877{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4878 int icase;
4879
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4880 if (test->i != pattern->val.i)
4881 return 0;
4882
4883 if (test->i != HTTP_METH_OTHER)
4884 return 1;
4885
4886 /* Other method, we must compare the strings */
4887 if (pattern->len != test->len)
4888 return 0;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]4889
4890 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
4891 if ((icase && strncasecmp(pattern->ptr.str, test->ptr, test->len) != 0) ||
4892 (!icase && strncmp(pattern->ptr.str, test->ptr, test->len) != 0))
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4893 return 0;
4894 return 1;
4895}
4896
4897/* 2. Check on Request/Status Version
4898 * We simply compare strings here.
4899 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4900static int acl_parse_ver(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4901{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4902 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4903 if (!pattern->ptr.str)
4904 return 0;
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]4905 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4906 return 1;
4907}
4908
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4909static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4910acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, int dir,
4911 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4912{
4913 struct http_txn *txn = l7;
4914 char *ptr;
4915 int len;
4916
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4917 if (txn->req.msg_state != HTTP_MSG_BODY)
4918 return 0;
4919
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4920 len = txn->req.sl.rq.v_l;
4921 ptr = txn->req.sol + txn->req.sl.rq.v - txn->req.som;
4922
4923 while ((len-- > 0) && (*ptr++ != '/'));
4924 if (len <= 0)
4925 return 0;
4926
4927 test->ptr = ptr;
4928 test->len = len;
4929
4930 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4931 return 1;
4932}
4933
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4934static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4935acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, int dir,
4936 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4937{
4938 struct http_txn *txn = l7;
4939 char *ptr;
4940 int len;
4941
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4942 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4943 return 0;
4944
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4945 len = txn->rsp.sl.st.v_l;
4946 ptr = txn->rsp.sol;
4947
4948 while ((len-- > 0) && (*ptr++ != '/'));
4949 if (len <= 0)
4950 return 0;
4951
4952 test->ptr = ptr;
4953 test->len = len;
4954
4955 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
4956 return 1;
4957}
4958
4959/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4960static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4961acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, int dir,
4962 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4963{
4964 struct http_txn *txn = l7;
4965 char *ptr;
4966 int len;
4967
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4968 if (txn->rsp.msg_state != HTTP_MSG_BODY)
4969 return 0;
4970
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4971 len = txn->rsp.sl.st.c_l;
4972 ptr = txn->rsp.sol + txn->rsp.sl.st.c - txn->rsp.som;
4973
4974 test->i = __strl2ui(ptr, len);
4975 test->flags = ACL_TEST_F_VOL_1ST;
4976 return 1;
4977}
4978
4979/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]4980static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]4981acl_fetch_url(struct proxy *px, struct session *l4, void *l7, int dir,
4982 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4983{
4984 struct http_txn *txn = l7;
4985
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]4986 if (txn->req.msg_state != HTTP_MSG_BODY)
4987 return 0;
4988 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
4989 /* ensure the indexes are not affected */
4990 return 0;
4991
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4992 test->len = txn->req.sl.rq.u_l;
4993 test->ptr = txn->req.sol + txn->req.sl.rq.u;
4994
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]4995 /* we do not need to set READ_ONLY because the data is in a buffer */
4996 test->flags = ACL_TEST_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]4997 return 1;
4998}
4999
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5000static int
5001acl_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, int dir,
5002 struct acl_expr *expr, struct acl_test *test)
5003{
5004 struct http_txn *txn = l7;
5005
5006 if (txn->req.msg_state != HTTP_MSG_BODY)
5007 return 0;
5008 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5009 /* ensure the indexes are not affected */
5010 return 0;
5011
5012 /* Parse HTTP request */
5013 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
5014 test->ptr = (void *)&((struct sockaddr_in *)&l4->srv_addr)->sin_addr;
5015 test->i = AF_INET;
5016
5017 /*
5018 * If we are parsing url in frontend space, we prepare backend stage
5019 * to not parse again the same url ! optimization lazyness...
5020 */
5021 if (px->options & PR_O_HTTP_PROXY)
5022 l4->flags |= SN_ADDR_SET;
5023
5024 test->flags = ACL_TEST_F_READ_ONLY;
5025 return 1;
5026}
5027
5028static int
5029acl_fetch_url_port(struct proxy *px, struct session *l4, void *l7, int dir,
5030 struct acl_expr *expr, struct acl_test *test)
5031{
5032 struct http_txn *txn = l7;
5033
5034 if (txn->req.msg_state != HTTP_MSG_BODY)
5035 return 0;
5036 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5037 /* ensure the indexes are not affected */
5038 return 0;
5039
5040 /* Same optimization as url_ip */
5041 url2sa(txn->req.sol + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &l4->srv_addr);
5042 test->i = ntohs(((struct sockaddr_in *)&l4->srv_addr)->sin_port);
5043
5044 if (px->options & PR_O_HTTP_PROXY)
5045 l4->flags |= SN_ADDR_SET;
5046
5047 test->flags = ACL_TEST_F_READ_ONLY;
5048 return 1;
5049}
5050
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5051/* 5. Check on HTTP header. A pointer to the beginning of the value is returned.
5052 * This generic function is used by both acl_fetch_chdr() and acl_fetch_shdr().
5053 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5054static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5055acl_fetch_hdr(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5056 struct acl_expr *expr, struct acl_test *test)
5057{
5058 struct http_txn *txn = l7;
5059 struct hdr_idx *idx = &txn->hdr_idx;
5060 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5061
5062 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5063 /* search for header from the beginning */
5064 ctx->idx = 0;
5065
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5066 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5067 test->flags |= ACL_TEST_F_FETCH_MORE;
5068 test->flags |= ACL_TEST_F_VOL_HDR;
5069 test->len = ctx->vlen;
5070 test->ptr = (char *)ctx->line + ctx->val;
5071 return 1;
5072 }
5073
5074 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5075 test->flags |= ACL_TEST_F_VOL_HDR;
5076 return 0;
5077}
5078
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5079static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5080acl_fetch_chdr(struct proxy *px, struct session *l4, void *l7, int dir,
5081 struct acl_expr *expr, struct acl_test *test)
5082{
5083 struct http_txn *txn = l7;
5084
5085 if (txn->req.msg_state != HTTP_MSG_BODY)
5086 return 0;
5087 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5088 /* ensure the indexes are not affected */
5089 return 0;
5090
5091 return acl_fetch_hdr(px, l4, txn, txn->req.sol, expr, test);
5092}
5093
5094static int
5095acl_fetch_shdr(struct proxy *px, struct session *l4, void *l7, int dir,
5096 struct acl_expr *expr, struct acl_test *test)
5097{
5098 struct http_txn *txn = l7;
5099
5100 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5101 return 0;
5102
5103 return acl_fetch_hdr(px, l4, txn, txn->rsp.sol, expr, test);
5104}
5105
5106/* 6. Check on HTTP header count. The number of occurrences is returned.
5107 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
5108 */
5109static int
5110acl_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5111 struct acl_expr *expr, struct acl_test *test)
5112{
5113 struct http_txn *txn = l7;
5114 struct hdr_idx *idx = &txn->hdr_idx;
5115 struct hdr_ctx ctx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5116 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5117
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5118 ctx.idx = 0;
5119 cnt = 0;
5120 while (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, &ctx))
5121 cnt++;
5122
5123 test->i = cnt;
5124 test->flags = ACL_TEST_F_VOL_HDR;
5125 return 1;
5126}
5127
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5128static int
5129acl_fetch_chdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5130 struct acl_expr *expr, struct acl_test *test)
5131{
5132 struct http_txn *txn = l7;
5133
5134 if (txn->req.msg_state != HTTP_MSG_BODY)
5135 return 0;
5136 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5137 /* ensure the indexes are not affected */
5138 return 0;
5139
5140 return acl_fetch_hdr_cnt(px, l4, txn, txn->req.sol, expr, test);
5141}
5142
5143static int
5144acl_fetch_shdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5145 struct acl_expr *expr, struct acl_test *test)
5146{
5147 struct http_txn *txn = l7;
5148
5149 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5150 return 0;
5151
5152 return acl_fetch_hdr_cnt(px, l4, txn, txn->rsp.sol, expr, test);
5153}
5154
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5155/* 7. Check on HTTP header's integer value. The integer value is returned.
5156 * FIXME: the type is 'int', it may not be appropriate for everything.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5157 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5158 */
5159static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5160acl_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5161 struct acl_expr *expr, struct acl_test *test)
5162{
5163 struct http_txn *txn = l7;
5164 struct hdr_idx *idx = &txn->hdr_idx;
5165 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5166
5167 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5168 /* search for header from the beginning */
5169 ctx->idx = 0;
5170
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5171 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5172 test->flags |= ACL_TEST_F_FETCH_MORE;
5173 test->flags |= ACL_TEST_F_VOL_HDR;
5174 test->i = strl2ic((char *)ctx->line + ctx->val, ctx->vlen);
5175 return 1;
5176 }
5177
5178 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5179 test->flags |= ACL_TEST_F_VOL_HDR;
5180 return 0;
5181}
5182
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5183static int
5184acl_fetch_chdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5185 struct acl_expr *expr, struct acl_test *test)
5186{
5187 struct http_txn *txn = l7;
5188
5189 if (txn->req.msg_state != HTTP_MSG_BODY)
5190 return 0;
5191 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5192 /* ensure the indexes are not affected */
5193 return 0;
5194
5195 return acl_fetch_hdr_val(px, l4, txn, txn->req.sol, expr, test);
5196}
5197
5198static int
5199acl_fetch_shdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5200 struct acl_expr *expr, struct acl_test *test)
5201{
5202 struct http_txn *txn = l7;
5203
5204 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5205 return 0;
5206
5207 return acl_fetch_hdr_val(px, l4, txn, txn->rsp.sol, expr, test);
5208}
5209
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5210/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
5211 * the first '/' after the possible hostname, and ends before the possible '?'.
5212 */
5213static int
5214acl_fetch_path(struct proxy *px, struct session *l4, void *l7, int dir,
5215 struct acl_expr *expr, struct acl_test *test)
5216{
5217 struct http_txn *txn = l7;
5218 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5219
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5220 if (txn->req.msg_state != HTTP_MSG_BODY)
5221 return 0;
5222 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5223 /* ensure the indexes are not affected */
5224 return 0;
5225
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5226 ptr = txn->req.sol + txn->req.sl.rq.u;
5227 end = ptr + txn->req.sl.rq.u_l;
5228
5229 if (ptr >= end)
5230 return 0;
5231
5232 /* RFC2616, par. 5.1.2 :
5233 * Request-URI = "*" | absuri | abspath | authority
5234 */
5235
5236 if (*ptr == '*')
5237 return 0;
5238
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]5239 if (isalpha((unsigned char)*ptr)) {
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5240 /* this is a scheme as described by RFC3986, par. 3.1 */
5241 ptr++;
5242 while (ptr < end &&
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]5243 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5244 ptr++;
5245 /* skip '://' */
5246 if (ptr == end || *ptr++ != ':')
5247 return 0;
5248 if (ptr == end || *ptr++ != '/')
5249 return 0;
5250 if (ptr == end || *ptr++ != '/')
5251 return 0;
5252 }
5253 /* skip [user[:passwd]@]host[:[port]] */
5254
5255 while (ptr < end && *ptr != '/')
5256 ptr++;
5257
5258 if (ptr == end)
5259 return 0;
5260
5261 /* OK, we got the '/' ! */
5262 test->ptr = ptr;
5263
5264 while (ptr < end && *ptr != '?')
5265 ptr++;
5266
5267 test->len = ptr - test->ptr;
5268
5269 /* we do not need to set READ_ONLY because the data is in a buffer */
5270 test->flags = ACL_TEST_F_VOL_1ST;
5271 return 1;
5272}
5273
5274
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5275
5276/************************************************************************/
5277/* All supported keywords must be declared here. */
5278/************************************************************************/
5279
5280/* Note: must not be declared <const> as its list will be overwritten */
5281static struct acl_kw_list acl_kws = {{ },{
5282 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth },
5283 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str },
5284 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str },
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5285 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5286
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]5287 { "url", acl_parse_str, acl_fetch_url, acl_match_str },
5288 { "url_beg", acl_parse_str, acl_fetch_url, acl_match_beg },
5289 { "url_end", acl_parse_str, acl_fetch_url, acl_match_end },
5290 { "url_sub", acl_parse_str, acl_fetch_url, acl_match_sub },
5291 { "url_dir", acl_parse_str, acl_fetch_url, acl_match_dir },
5292 { "url_dom", acl_parse_str, acl_fetch_url, acl_match_dom },
5293 { "url_reg", acl_parse_reg, acl_fetch_url, acl_match_reg },
5294 { "url_ip", acl_parse_ip, acl_fetch_url_ip, acl_match_ip },
5295 { "url_port", acl_parse_int, acl_fetch_url_port, acl_match_int },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5296
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5297 { "hdr", acl_parse_str, acl_fetch_chdr, acl_match_str },
5298 { "hdr_reg", acl_parse_reg, acl_fetch_chdr, acl_match_reg },
5299 { "hdr_beg", acl_parse_str, acl_fetch_chdr, acl_match_beg },
5300 { "hdr_end", acl_parse_str, acl_fetch_chdr, acl_match_end },
5301 { "hdr_sub", acl_parse_str, acl_fetch_chdr, acl_match_sub },
5302 { "hdr_dir", acl_parse_str, acl_fetch_chdr, acl_match_dir },
5303 { "hdr_dom", acl_parse_str, acl_fetch_chdr, acl_match_dom },
5304 { "hdr_cnt", acl_parse_int, acl_fetch_chdr_cnt,acl_match_int },
5305 { "hdr_val", acl_parse_int, acl_fetch_chdr_val,acl_match_int },
5306
5307 { "shdr", acl_parse_str, acl_fetch_shdr, acl_match_str },
5308 { "shdr_reg", acl_parse_reg, acl_fetch_shdr, acl_match_reg },
5309 { "shdr_beg", acl_parse_str, acl_fetch_shdr, acl_match_beg },
5310 { "shdr_end", acl_parse_str, acl_fetch_shdr, acl_match_end },
5311 { "shdr_sub", acl_parse_str, acl_fetch_shdr, acl_match_sub },
5312 { "shdr_dir", acl_parse_str, acl_fetch_shdr, acl_match_dir },
5313 { "shdr_dom", acl_parse_str, acl_fetch_shdr, acl_match_dom },
5314 { "shdr_cnt", acl_parse_int, acl_fetch_shdr_cnt,acl_match_int },
5315 { "shdr_val", acl_parse_int, acl_fetch_shdr_val,acl_match_int },
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5316
5317 { "path", acl_parse_str, acl_fetch_path, acl_match_str },
5318 { "path_reg", acl_parse_reg, acl_fetch_path, acl_match_reg },
5319 { "path_beg", acl_parse_str, acl_fetch_path, acl_match_beg },
5320 { "path_end", acl_parse_str, acl_fetch_path, acl_match_end },
5321 { "path_sub", acl_parse_str, acl_fetch_path, acl_match_sub },
5322 { "path_dir", acl_parse_str, acl_fetch_path, acl_match_dir },
5323 { "path_dom", acl_parse_str, acl_fetch_path, acl_match_dom },
5324
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]5325 { NULL, NULL, NULL, NULL },
5326
5327#if 0
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5328 { "line", acl_parse_str, acl_fetch_line, acl_match_str },
5329 { "line_reg", acl_parse_reg, acl_fetch_line, acl_match_reg },
5330 { "line_beg", acl_parse_str, acl_fetch_line, acl_match_beg },
5331 { "line_end", acl_parse_str, acl_fetch_line, acl_match_end },
5332 { "line_sub", acl_parse_str, acl_fetch_line, acl_match_sub },
5333 { "line_dir", acl_parse_str, acl_fetch_line, acl_match_dir },
5334 { "line_dom", acl_parse_str, acl_fetch_line, acl_match_dom },
5335
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5336 { "cook", acl_parse_str, acl_fetch_cook, acl_match_str },
5337 { "cook_reg", acl_parse_reg, acl_fetch_cook, acl_match_reg },
5338 { "cook_beg", acl_parse_str, acl_fetch_cook, acl_match_beg },
5339 { "cook_end", acl_parse_str, acl_fetch_cook, acl_match_end },
5340 { "cook_sub", acl_parse_str, acl_fetch_cook, acl_match_sub },
5341 { "cook_dir", acl_parse_str, acl_fetch_cook, acl_match_dir },
5342 { "cook_dom", acl_parse_str, acl_fetch_cook, acl_match_dom },
5343 { "cook_pst", acl_parse_none, acl_fetch_cook, acl_match_pst },
5344
5345 { "auth_user", acl_parse_str, acl_fetch_user, acl_match_str },
5346 { "auth_regex", acl_parse_reg, acl_fetch_user, acl_match_reg },
5347 { "auth_clear", acl_parse_str, acl_fetch_auth, acl_match_str },
5348 { "auth_md5", acl_parse_str, acl_fetch_auth, acl_match_md5 },
5349 { NULL, NULL, NULL, NULL },
5350#endif
5351}};
5352
5353
5354__attribute__((constructor))
5355static void __http_protocol_init(void)
5356{
5357 acl_register_keywords(&acl_kws);
5358}
5359
5360
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5361/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5362 * Local variables:
5363 * c-indent-level: 8
5364 * c-basic-offset: 8
5365 * End:
5366 */