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git01.mediatek.com / haproxy / 24e779b71dc3830abe4cf465e573427f805de006 / . / src / proto_http.c
blob: 10420818ceaea368d1e218b0de2b814036681a26 [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>
49#include <proto/fd.h>
50#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]51#include <proto/hdr_idx.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]52#include <proto/proto_http.h>
53#include <proto/queue.h>
54#include <proto/session.h>
55#include <proto/task.h>
56
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]57#ifdef CONFIG_HAP_TCPSPLICE
58#include <libtcpsplice.h>
59#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]60
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]61#define DEBUG_PARSE_NO_SPEEDUP
62#undef DEBUG_PARSE_NO_SPEEDUP
63
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]64/* This is used to perform a quick jump as an alternative to a break/continue
65 * instruction. The first argument is the label for normal operation, and the
66 * second one is the break/continue instruction in the no_speedup mode.
67 */
68
69#ifdef DEBUG_PARSE_NO_SPEEDUP
70#define QUICK_JUMP(x,y) y
71#else
72#define QUICK_JUMP(x,y) goto x
73#endif
74
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]75/* This is used by remote monitoring */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]76const char HTTP_200[] =
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]77 "HTTP/1.0 200 OK\r\n"
78 "Cache-Control: no-cache\r\n"
79 "Connection: close\r\n"
80 "Content-Type: text/html\r\n"
81 "\r\n"
82 "<html><body><h1>200 OK</h1>\nHAProxy: service ready.\n</body></html>\n";
83
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]84const struct chunk http_200_chunk = {
85 .str = (char *)&HTTP_200,
86 .len = sizeof(HTTP_200)-1
87};
88
89const char *HTTP_302 =
90 "HTTP/1.0 302 Found\r\n"
91 "Cache-Control: no-cache\r\n"
92 "Connection: close\r\n"
93 "Location: "; /* not terminated since it will be concatenated with the URL */
94
95/* same as 302 except that the browser MUST retry with the GET method */
96const char *HTTP_303 =
97 "HTTP/1.0 303 See Other\r\n"
98 "Cache-Control: no-cache\r\n"
99 "Connection: close\r\n"
100 "Location: "; /* not terminated since it will be concatenated with the URL */
101
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]102/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
103const char *HTTP_401_fmt =
104 "HTTP/1.0 401 Unauthorized\r\n"
105 "Cache-Control: no-cache\r\n"
106 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]107 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]108 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
109 "\r\n"
110 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
111
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]112
113const int http_err_codes[HTTP_ERR_SIZE] = {
114 [HTTP_ERR_400] = 400,
115 [HTTP_ERR_403] = 403,
116 [HTTP_ERR_408] = 408,
117 [HTTP_ERR_500] = 500,
118 [HTTP_ERR_502] = 502,
119 [HTTP_ERR_503] = 503,
120 [HTTP_ERR_504] = 504,
121};
122
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]123static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]124 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]125 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]126 "Cache-Control: no-cache\r\n"
127 "Connection: close\r\n"
128 "Content-Type: text/html\r\n"
129 "\r\n"
130 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
131
132 [HTTP_ERR_403] =
133 "HTTP/1.0 403 Forbidden\r\n"
134 "Cache-Control: no-cache\r\n"
135 "Connection: close\r\n"
136 "Content-Type: text/html\r\n"
137 "\r\n"
138 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
139
140 [HTTP_ERR_408] =
141 "HTTP/1.0 408 Request Time-out\r\n"
142 "Cache-Control: no-cache\r\n"
143 "Connection: close\r\n"
144 "Content-Type: text/html\r\n"
145 "\r\n"
146 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
147
148 [HTTP_ERR_500] =
149 "HTTP/1.0 500 Server Error\r\n"
150 "Cache-Control: no-cache\r\n"
151 "Connection: close\r\n"
152 "Content-Type: text/html\r\n"
153 "\r\n"
154 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
155
156 [HTTP_ERR_502] =
157 "HTTP/1.0 502 Bad Gateway\r\n"
158 "Cache-Control: no-cache\r\n"
159 "Connection: close\r\n"
160 "Content-Type: text/html\r\n"
161 "\r\n"
162 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
163
164 [HTTP_ERR_503] =
165 "HTTP/1.0 503 Service Unavailable\r\n"
166 "Cache-Control: no-cache\r\n"
167 "Connection: close\r\n"
168 "Content-Type: text/html\r\n"
169 "\r\n"
170 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
171
172 [HTTP_ERR_504] =
173 "HTTP/1.0 504 Gateway Time-out\r\n"
174 "Cache-Control: no-cache\r\n"
175 "Connection: close\r\n"
176 "Content-Type: text/html\r\n"
177 "\r\n"
178 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
179
180};
181
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]182/* We must put the messages here since GCC cannot initialize consts depending
183 * on strlen().
184 */
185struct chunk http_err_chunks[HTTP_ERR_SIZE];
186
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]187#define FD_SETS_ARE_BITFIELDS
188#ifdef FD_SETS_ARE_BITFIELDS
189/*
190 * This map is used with all the FD_* macros to check whether a particular bit
191 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
192 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
193 * byte should be encoded. Be careful to always pass bytes from 0 to 255
194 * exclusively to the macros.
195 */
196fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
197fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
198
199#else
200#error "Check if your OS uses bitfields for fd_sets"
201#endif
202
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]203void init_proto_http()
204{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]205 int i;
206 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]207 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]208
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]209 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
210 if (!http_err_msgs[msg]) {
211 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
212 abort();
213 }
214
215 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
216 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
217 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]218
219 /* initialize the log header encoding map : '{|}"#' should be encoded with
220 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
221 * URL encoding only requires '"', '#' to be encoded as well as non-
222 * printable characters above.
223 */
224 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
225 memset(url_encode_map, 0, sizeof(url_encode_map));
226 for (i = 0; i < 32; i++) {
227 FD_SET(i, hdr_encode_map);
228 FD_SET(i, url_encode_map);
229 }
230 for (i = 127; i < 256; i++) {
231 FD_SET(i, hdr_encode_map);
232 FD_SET(i, url_encode_map);
233 }
234
235 tmp = "\"#{|}";
236 while (*tmp) {
237 FD_SET(*tmp, hdr_encode_map);
238 tmp++;
239 }
240
241 tmp = "\"#";
242 while (*tmp) {
243 FD_SET(*tmp, url_encode_map);
244 tmp++;
245 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]246
247 /* memory allocations */
248 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]249 pool2_capture = create_pool("capture", CAPTURE_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]250}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]251
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]252/*
253 * We have 26 list of methods (1 per first letter), each of which can have
254 * up to 3 entries (2 valid, 1 null).
255 */
256struct http_method_desc {
257 http_meth_t meth;
258 int len;
259 const char text[8];
260};
261
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]262const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]263 ['C' - 'A'] = {
264 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
265 },
266 ['D' - 'A'] = {
267 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
268 },
269 ['G' - 'A'] = {
270 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
271 },
272 ['H' - 'A'] = {
273 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
274 },
275 ['P' - 'A'] = {
276 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
277 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
278 },
279 ['T' - 'A'] = {
280 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
281 },
282 /* rest is empty like this :
283 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
284 */
285};
286
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]287/* It is about twice as fast on recent architectures to lookup a byte in a
288 * table than two perform a boolean AND or OR between two tests. Refer to
289 * RFC2616 for those chars.
290 */
291
292const char http_is_spht[256] = {
293 [' '] = 1, ['\t'] = 1,
294};
295
296const char http_is_crlf[256] = {
297 ['\r'] = 1, ['\n'] = 1,
298};
299
300const char http_is_lws[256] = {
301 [' '] = 1, ['\t'] = 1,
302 ['\r'] = 1, ['\n'] = 1,
303};
304
305const char http_is_sep[256] = {
306 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
307 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
308 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
309 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
310 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
311};
312
313const char http_is_ctl[256] = {
314 [0 ... 31] = 1,
315 [127] = 1,
316};
317
318/*
319 * A token is any ASCII char that is neither a separator nor a CTL char.
320 * Do not overwrite values in assignment since gcc-2.95 will not handle
321 * them correctly. Instead, define every non-CTL char's status.
322 */
323const char http_is_token[256] = {
324 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
325 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
326 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
327 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
328 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
329 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
330 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
331 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
332 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
333 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
334 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
335 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
336 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
337 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
338 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
339 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
340 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
341 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
342 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
343 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
344 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
345 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
346 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
347 ['|'] = 1, ['}'] = 0, ['~'] = 1,
348};
349
350
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]351/*
352 * An http ver_token is any ASCII which can be found in an HTTP version,
353 * which includes 'H', 'T', 'P', '/', '.' and any digit.
354 */
355const char http_is_ver_token[256] = {
356 ['.'] = 1, ['/'] = 1,
357 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
358 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
359 ['H'] = 1, ['P'] = 1, ['T'] = 1,
360};
361
362
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]363#ifdef DEBUG_FULL
364static char *cli_stnames[5] = {"HDR", "DAT", "SHR", "SHW", "CLS" };
365static char *srv_stnames[7] = {"IDL", "CON", "HDR", "DAT", "SHR", "SHW", "CLS" };
366#endif
367
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]368static void http_sess_log(struct session *s);
369
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]370/*
371 * Adds a header and its CRLF at the tail of buffer <b>, just before the last
372 * CRLF. Text length is measured first, so it cannot be NULL.
373 * The header is also automatically added to the index <hdr_idx>, and the end
374 * of headers is automatically adjusted. The number of bytes added is returned
375 * on success, otherwise <0 is returned indicating an error.
376 */
377int http_header_add_tail(struct buffer *b, struct http_msg *msg,
378 struct hdr_idx *hdr_idx, const char *text)
379{
380 int bytes, len;
381
382 len = strlen(text);
383 bytes = buffer_insert_line2(b, b->data + msg->eoh, text, len);
384 if (!bytes)
385 return -1;
386 msg->eoh += bytes;
387 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
388}
389
390/*
391 * Adds a header and its CRLF at the tail of buffer <b>, just before the last
392 * CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
393 * the buffer is only opened and the space reserved, but nothing is copied.
394 * The header is also automatically added to the index <hdr_idx>, and the end
395 * of headers is automatically adjusted. The number of bytes added is returned
396 * on success, otherwise <0 is returned indicating an error.
397 */
398int http_header_add_tail2(struct buffer *b, struct http_msg *msg,
399 struct hdr_idx *hdr_idx, const char *text, int len)
400{
401 int bytes;
402
403 bytes = buffer_insert_line2(b, b->data + msg->eoh, text, len);
404 if (!bytes)
405 return -1;
406 msg->eoh += bytes;
407 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
408}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]409
410/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]411 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
412 * If so, returns the position of the first non-space character relative to
413 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
414 * to return a pointer to the place after the first space. Returns 0 if the
415 * header name does not match. Checks are case-insensitive.
416 */
417int http_header_match2(const char *hdr, const char *end,
418 const char *name, int len)
419{
420 const char *val;
421
422 if (hdr + len >= end)
423 return 0;
424 if (hdr[len] != ':')
425 return 0;
426 if (strncasecmp(hdr, name, len) != 0)
427 return 0;
428 val = hdr + len + 1;
429 while (val < end && HTTP_IS_SPHT(*val))
430 val++;
431 if ((val >= end) && (len + 2 <= end - hdr))
432 return len + 2; /* we may replace starting from second space */
433 return val - hdr;
434}
435
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]436/* Find the end of the header value contained between <s> and <e>.
437 * See RFC2616, par 2.2 for more information. Note that it requires
438 * a valid header to return a valid result.
439 */
440const char *find_hdr_value_end(const char *s, const char *e)
441{
442 int quoted, qdpair;
443
444 quoted = qdpair = 0;
445 for (; s < e; s++) {
446 if (qdpair) qdpair = 0;
447 else if (quoted && *s == '\\') qdpair = 1;
448 else if (quoted && *s == '"') quoted = 0;
449 else if (*s == '"') quoted = 1;
450 else if (*s == ',') return s;
451 }
452 return s;
453}
454
455/* Find the first or next occurrence of header <name> in message buffer <sol>
456 * using headers index <idx>, and return it in the <ctx> structure. This
457 * structure holds everything necessary to use the header and find next
458 * occurrence. If its <idx> member is 0, the header is searched from the
459 * beginning. Otherwise, the next occurrence is returned. The function returns
460 * 1 when it finds a value, and 0 when there is no more.
461 */
462int http_find_header2(const char *name, int len,
463 const char *sol, struct hdr_idx *idx,
464 struct hdr_ctx *ctx)
465{
466 __label__ return_hdr, next_hdr;
467 const char *eol, *sov;
468 int cur_idx;
469
470 if (ctx->idx) {
471 /* We have previously returned a value, let's search
472 * another one on the same line.
473 */
474 cur_idx = ctx->idx;
475 sol = ctx->line;
476 sov = sol + ctx->val + ctx->vlen;
477 eol = sol + idx->v[cur_idx].len;
478
479 if (sov >= eol)
480 /* no more values in this header */
481 goto next_hdr;
482
483 /* values remaining for this header, skip the comma */
484 sov++;
485 while (sov < eol && http_is_lws[(unsigned char)*sov])
486 sov++;
487
488 goto return_hdr;
489 }
490
491 /* first request for this header */
492 sol += hdr_idx_first_pos(idx);
493 cur_idx = hdr_idx_first_idx(idx);
494
495 while (cur_idx) {
496 eol = sol + idx->v[cur_idx].len;
497
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]498 if (len == 0) {
499 /* No argument was passed, we want any header.
500 * To achieve this, we simply build a fake request. */
501 while (sol + len < eol && sol[len] != ':')
502 len++;
503 name = sol;
504 }
505
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]506 if ((len < eol - sol) &&
507 (sol[len] == ':') &&
508 (strncasecmp(sol, name, len) == 0)) {
509
510 sov = sol + len + 1;
511 while (sov < eol && http_is_lws[(unsigned char)*sov])
512 sov++;
513 return_hdr:
514 ctx->line = sol;
515 ctx->idx = cur_idx;
516 ctx->val = sov - sol;
517
518 eol = find_hdr_value_end(sov, eol);
519 ctx->vlen = eol - sov;
520 return 1;
521 }
522 next_hdr:
523 sol = eol + idx->v[cur_idx].cr + 1;
524 cur_idx = idx->v[cur_idx].next;
525 }
526 return 0;
527}
528
529int http_find_header(const char *name,
530 const char *sol, struct hdr_idx *idx,
531 struct hdr_ctx *ctx)
532{
533 return http_find_header2(name, strlen(name), sol, idx, ctx);
534}
535
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]536/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]537 * returns a message to the client ; the connection is shut down for read,
538 * and the request is cleared so that no server connection can be initiated.
539 * The client must be in a valid state for this (HEADER, DATA ...).
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]540 * Nothing is performed on the server side. The message is contained in a
541 * "chunk". If it is null, then an empty message is used.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]542 * The reply buffer doesn't need to be empty before this.
543 */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]544void client_retnclose(struct session *s, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]545{
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]546 EV_FD_CLR(s->cli_fd, DIR_RD);
547 EV_FD_SET(s->cli_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]548 buffer_shutr(s->req);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]549 if (!tv_add_ifset(&s->rep->wex, &now, &s->fe->clitimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]550 tv_eternity(&s->rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]551 s->cli_state = CL_STSHUTR;
552 buffer_flush(s->rep);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]553 if (msg->len)
554 buffer_write(s->rep, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]555 s->req->l = 0;
556}
557
558
559/*
560 * returns a message into the rep buffer, and flushes the req buffer.
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]561 * The reply buffer doesn't need to be empty before this. The message
562 * is contained in a "chunk". If it is null, then an empty message is
563 * used.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]564 */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]565void client_return(struct session *s, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]566{
567 buffer_flush(s->rep);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]568 if (msg->len)
569 buffer_write(s->rep, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]570 s->req->l = 0;
571}
572
573
574/* This function turns the server state into the SV_STCLOSE, and sets
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]575 * indicators accordingly. Note that if <status> is 0, or if the message
576 * pointer is NULL, then no message is returned.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]577 */
578void srv_close_with_err(struct session *t, int err, int finst,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]579 int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]580{
581 t->srv_state = SV_STCLOSE;
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]582 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]583 t->txn.status = status;
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]584 if (t->fe->mode == PR_MODE_HTTP)
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]585 client_return(t, msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]586 }
587 if (!(t->flags & SN_ERR_MASK))
588 t->flags |= err;
589 if (!(t->flags & SN_FINST_MASK))
590 t->flags |= finst;
591}
592
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]593/* This function returns the appropriate error location for the given session
594 * and message.
595 */
596
597struct chunk *error_message(struct session *s, int msgnum)
598{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]599 if (s->be->errmsg[msgnum].str)
600 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]601 else if (s->fe->errmsg[msgnum].str)
602 return &s->fe->errmsg[msgnum];
603 else
604 return &http_err_chunks[msgnum];
605}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]606
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]607/*
608 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
609 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
610 */
611static http_meth_t find_http_meth(const char *str, const int len)
612{
613 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]614 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]615
616 m = ((unsigned)*str - 'A');
617
618 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]619 for (h = http_methods[m]; h->len > 0; h++) {
620 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]621 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]622 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]623 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]624 };
625 return HTTP_METH_OTHER;
626 }
627 return HTTP_METH_NONE;
628
629}
630
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]631/* Processes the client and server jobs of a session task, then
632 * puts it back to the wait queue in a clean state, or
633 * cleans up its resources if it must be deleted. Returns
634 * the time the task accepts to wait, or TIME_ETERNITY for
635 * infinity.
636 */
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]637void process_session(struct task *t, struct timeval *next)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]638{
639 struct session *s = t->context;
640 int fsm_resync = 0;
641
642 do {
643 fsm_resync = 0;
644 //fprintf(stderr,"before_cli:cli=%d, srv=%d\n", s->cli_state, s->srv_state);
645 fsm_resync |= process_cli(s);
646 //fprintf(stderr,"cli/srv:cli=%d, srv=%d\n", s->cli_state, s->srv_state);
647 fsm_resync |= process_srv(s);
648 //fprintf(stderr,"after_srv:cli=%d, srv=%d\n", s->cli_state, s->srv_state);
649 } while (fsm_resync);
650
Willy Tarreauf41d4b12007-04-28 23:26:14 +0200[diff] [blame]651 if (likely(s->cli_state != CL_STCLOSE || s->srv_state != SV_STCLOSE)) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]652 s->req->flags &= BF_CLEAR_READ & BF_CLEAR_WRITE;
653 s->rep->flags &= BF_CLEAR_READ & BF_CLEAR_WRITE;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]654
Willy Tarreaua6a6a932007-04-28 22:40:08 +0200[diff] [blame]655 t->expire = s->req->rex;
656 tv_min(&t->expire, &s->req->rex, &s->req->wex);
657 tv_bound(&t->expire, &s->req->cex);
658 tv_bound(&t->expire, &s->rep->rex);
659 tv_bound(&t->expire, &s->rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]660
661 /* restore t to its place in the task list */
662 task_queue(t);
663
664#ifdef DEBUG_FULL
665 /* DEBUG code : this should never ever happen, otherwise it indicates
666 * that a task still has something to do and will provoke a quick loop.
667 */
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]668 if (tv_remain2(&now, &t->expire) <= 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]669 exit(100);
670#endif
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]671 *next = t->expire;
672 return; /* nothing more to do */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]673 }
674
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]675 s->fe->feconn--;
676 if (s->flags & SN_BE_ASSIGNED)
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]677 s->be->beconn--;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]678 actconn--;
679
Willy Tarreauf41d4b12007-04-28 23:26:14 +0200[diff] [blame]680 if (unlikely((global.mode & MODE_DEBUG) &&
681 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]682 int len;
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]683 len = sprintf(trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]684 s->uniq_id, s->be->id,
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]685 (unsigned short)s->cli_fd, (unsigned short)s->srv_fd);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]686 write(1, trash, len);
687 }
688
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]689 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]690 if (s->req != NULL)
691 s->logs.bytes_in = s->req->total;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]692 if (s->rep != NULL)
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]693 s->logs.bytes_out = s->rep->total;
694
695 s->fe->bytes_in += s->logs.bytes_in;
696 s->fe->bytes_out += s->logs.bytes_out;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]697 if (s->be != s->fe) {
698 s->be->bytes_in += s->logs.bytes_in;
699 s->be->bytes_out += s->logs.bytes_out;
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]700 }
701 if (s->srv) {
702 s->srv->bytes_in += s->logs.bytes_in;
703 s->srv->bytes_out += s->logs.bytes_out;
704 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]705
706 /* let's do a final log if we need it */
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]707 if (s->logs.logwait &&
708 !(s->flags & SN_MONITOR) &&
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]709 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
710 if (s->fe->to_log & LW_REQ)
711 http_sess_log(s);
712 else
713 tcp_sess_log(s);
714 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]715
716 /* the task MUST not be in the run queue anymore */
717 task_delete(t);
718 session_free(s);
719 task_free(t);
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]720 tv_eternity(next);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]721}
722
723
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]724extern const char sess_term_cond[8];
725extern const char sess_fin_state[8];
726extern const char *monthname[12];
727const char sess_cookie[4] = "NIDV"; /* No cookie, Invalid cookie, cookie for a Down server, Valid cookie */
728const char sess_set_cookie[8] = "N1I3PD5R"; /* No set-cookie, unknown, Set-Cookie Inserted, unknown,
729 Set-cookie seen and left unchanged (passive), Set-cookie Deleted,
730 unknown, Set-cookie Rewritten */
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]731struct pool_head *pool2_requri;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]732struct pool_head *pool2_capture;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]733
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]734/*
735 * send a log for the session when we have enough info about it.
736 * Will not log if the frontend has no log defined.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]737 */
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]738static void http_sess_log(struct session *s)
739{
740 char pn[INET6_ADDRSTRLEN + strlen(":65535")];
741 struct proxy *fe = s->fe;
742 struct proxy *be = s->be;
743 struct proxy *prx_log;
744 struct http_txn *txn = &s->txn;
745 int tolog;
746 char *uri, *h;
747 char *svid;
748 struct tm *tm;
749 static char tmpline[MAX_SYSLOG_LEN];
750 int hdr;
751
752 if (fe->logfac1 < 0 && fe->logfac2 < 0)
753 return;
754 prx_log = fe;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]755
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]756 if (s->cli_addr.ss_family == AF_INET)
757 inet_ntop(AF_INET,
758 (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
759 pn, sizeof(pn));
760 else
761 inet_ntop(AF_INET6,
762 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
763 pn, sizeof(pn));
764
765 tm = localtime((time_t *)&s->logs.tv_accept.tv_sec);
766
767
768 /* FIXME: let's limit ourselves to frontend logging for now. */
769 tolog = fe->to_log;
770
771 h = tmpline;
772 if (fe->to_log & LW_REQHDR &&
773 txn->req.cap &&
774 (h < tmpline + sizeof(tmpline) - 10)) {
775 *(h++) = ' ';
776 *(h++) = '{';
777 for (hdr = 0; hdr < fe->nb_req_cap; hdr++) {
778 if (hdr)
779 *(h++) = '|';
780 if (txn->req.cap[hdr] != NULL)
781 h = encode_string(h, tmpline + sizeof(tmpline) - 7,
782 '#', hdr_encode_map, txn->req.cap[hdr]);
783 }
784 *(h++) = '}';
785 }
786
787 if (fe->to_log & LW_RSPHDR &&
788 txn->rsp.cap &&
789 (h < tmpline + sizeof(tmpline) - 7)) {
790 *(h++) = ' ';
791 *(h++) = '{';
792 for (hdr = 0; hdr < fe->nb_rsp_cap; hdr++) {
793 if (hdr)
794 *(h++) = '|';
795 if (txn->rsp.cap[hdr] != NULL)
796 h = encode_string(h, tmpline + sizeof(tmpline) - 4,
797 '#', hdr_encode_map, txn->rsp.cap[hdr]);
798 }
799 *(h++) = '}';
800 }
801
802 if (h < tmpline + sizeof(tmpline) - 4) {
803 *(h++) = ' ';
804 *(h++) = '"';
805 uri = txn->uri ? txn->uri : "<BADREQ>";
806 h = encode_string(h, tmpline + sizeof(tmpline) - 1,
807 '#', url_encode_map, uri);
808 *(h++) = '"';
809 }
810 *h = '\0';
811
812 svid = (tolog & LW_SVID) ?
813 (s->data_source != DATA_SRC_STATS) ?
814 (s->srv != NULL) ? s->srv->id : "<NOSRV>" : "<STATS>" : "-";
815
816 send_log(prx_log, LOG_INFO,
817 "%s:%d [%02d/%s/%04d:%02d:%02d:%02d.%03d]"
818 " %s %s/%s %d/%d/%d/%d/%s%d %d %s%lld"
819 " %s %s %c%c%c%c %d/%d/%d/%d %d/%d%s\n",
820 pn,
821 (s->cli_addr.ss_family == AF_INET) ?
822 ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port) :
823 ntohs(((struct sockaddr_in6 *)&s->cli_addr)->sin6_port),
824 tm->tm_mday, monthname[tm->tm_mon], tm->tm_year+1900,
825 tm->tm_hour, tm->tm_min, tm->tm_sec, s->logs.tv_accept.tv_usec/1000,
826 fe->id, be->id, svid,
827 s->logs.t_request,
828 (s->logs.t_queue >= 0) ? s->logs.t_queue - s->logs.t_request : -1,
829 (s->logs.t_connect >= 0) ? s->logs.t_connect - s->logs.t_queue : -1,
830 (s->logs.t_data >= 0) ? s->logs.t_data - s->logs.t_connect : -1,
831 (tolog & LW_BYTES) ? "" : "+", s->logs.t_close,
832 txn->status,
833 (tolog & LW_BYTES) ? "" : "+", s->logs.bytes_in,
834 txn->cli_cookie ? txn->cli_cookie : "-",
835 txn->srv_cookie ? txn->srv_cookie : "-",
836 sess_term_cond[(s->flags & SN_ERR_MASK) >> SN_ERR_SHIFT],
837 sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_FINST_SHIFT],
838 (be->options & PR_O_COOK_ANY) ? sess_cookie[(txn->flags & TX_CK_MASK) >> TX_CK_SHIFT] : '-',
839 (be->options & PR_O_COOK_ANY) ? sess_set_cookie[(txn->flags & TX_SCK_MASK) >> TX_SCK_SHIFT] : '-',
840 actconn, fe->feconn, be->beconn, s->srv ? s->srv->cur_sess : 0,
841 s->logs.srv_queue_size, s->logs.prx_queue_size, tmpline);
842
843 s->logs.logwait = 0;
844}
845
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]846
847/*
848 * Capture headers from message starting at <som> according to header list
849 * <cap_hdr>, and fill the <idx> structure appropriately.
850 */
851void capture_headers(char *som, struct hdr_idx *idx,
852 char **cap, struct cap_hdr *cap_hdr)
853{
854 char *eol, *sol, *col, *sov;
855 int cur_idx;
856 struct cap_hdr *h;
857 int len;
858
859 sol = som + hdr_idx_first_pos(idx);
860 cur_idx = hdr_idx_first_idx(idx);
861
862 while (cur_idx) {
863 eol = sol + idx->v[cur_idx].len;
864
865 col = sol;
866 while (col < eol && *col != ':')
867 col++;
868
869 sov = col + 1;
870 while (sov < eol && http_is_lws[(unsigned char)*sov])
871 sov++;
872
873 for (h = cap_hdr; h; h = h->next) {
874 if ((h->namelen == col - sol) &&
875 (strncasecmp(sol, h->name, h->namelen) == 0)) {
876 if (cap[h->index] == NULL)
877 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]878 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]879
880 if (cap[h->index] == NULL) {
881 Alert("HTTP capture : out of memory.\n");
882 continue;
883 }
884
885 len = eol - sov;
886 if (len > h->len)
887 len = h->len;
888
889 memcpy(cap[h->index], sov, len);
890 cap[h->index][len]=0;
891 }
892 }
893 sol = eol + idx->v[cur_idx].cr + 1;
894 cur_idx = idx->v[cur_idx].next;
895 }
896}
897
898
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]899/* either we find an LF at <ptr> or we jump to <bad>.
900 */
901#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
902
903/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
904 * otherwise to <http_msg_ood> with <state> set to <st>.
905 */
906#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
907 ptr++; \
908 if (likely(ptr < end)) \
909 goto good; \
910 else { \
911 state = (st); \
912 goto http_msg_ood; \
913 } \
914 } while (0)
915
916
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]917/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]918 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]919 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
920 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
921 * will give undefined results.
922 * Note that it is upon the caller's responsibility to ensure that ptr < end,
923 * and that msg->sol points to the beginning of the response.
924 * If a complete line is found (which implies that at least one CR or LF is
925 * found before <end>, the updated <ptr> is returned, otherwise NULL is
926 * returned indicating an incomplete line (which does not mean that parts have
927 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
928 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
929 * upon next call.
930 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]931 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]932 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
933 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]934 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]935 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]936const char *http_parse_stsline(struct http_msg *msg, const char *msg_buf, int state,
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]937 const char *ptr, const char *end,
938 char **ret_ptr, int *ret_state)
939{
940 __label__
941 http_msg_rpver,
942 http_msg_rpver_sp,
943 http_msg_rpcode,
944 http_msg_rpcode_sp,
945 http_msg_rpreason,
946 http_msg_rpline_eol,
947 http_msg_ood, /* out of data */
948 http_msg_invalid;
949
950 switch (state) {
951 http_msg_rpver:
952 case HTTP_MSG_RPVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]953 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]954 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
955
956 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]957 msg->sl.st.v_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]958 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
959 }
960 goto http_msg_invalid;
961
962 http_msg_rpver_sp:
963 case HTTP_MSG_RPVER_SP:
964 if (likely(!HTTP_IS_LWS(*ptr))) {
965 msg->sl.st.c = ptr - msg_buf;
966 goto http_msg_rpcode;
967 }
968 if (likely(HTTP_IS_SPHT(*ptr)))
969 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
970 /* so it's a CR/LF, this is invalid */
971 goto http_msg_invalid;
972
973 http_msg_rpcode:
974 case HTTP_MSG_RPCODE:
975 if (likely(!HTTP_IS_LWS(*ptr)))
976 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
977
978 if (likely(HTTP_IS_SPHT(*ptr))) {
979 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
980 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
981 }
982
983 /* so it's a CR/LF, so there is no reason phrase */
984 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
985 http_msg_rsp_reason:
986 /* FIXME: should we support HTTP responses without any reason phrase ? */
987 msg->sl.st.r = ptr - msg_buf;
988 msg->sl.st.r_l = 0;
989 goto http_msg_rpline_eol;
990
991 http_msg_rpcode_sp:
992 case HTTP_MSG_RPCODE_SP:
993 if (likely(!HTTP_IS_LWS(*ptr))) {
994 msg->sl.st.r = ptr - msg_buf;
995 goto http_msg_rpreason;
996 }
997 if (likely(HTTP_IS_SPHT(*ptr)))
998 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
999 /* so it's a CR/LF, so there is no reason phrase */
1000 goto http_msg_rsp_reason;
1001
1002 http_msg_rpreason:
1003 case HTTP_MSG_RPREASON:
1004 if (likely(!HTTP_IS_CRLF(*ptr)))
1005 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
1006 msg->sl.st.r_l = (ptr - msg_buf) - msg->sl.st.r;
1007 http_msg_rpline_eol:
1008 /* We have seen the end of line. Note that we do not
1009 * necessarily have the \n yet, but at least we know that we
1010 * have EITHER \r OR \n, otherwise the response would not be
1011 * complete. We can then record the response length and return
1012 * to the caller which will be able to register it.
1013 */
1014 msg->sl.st.l = ptr - msg->sol;
1015 return ptr;
1016
1017#ifdef DEBUG_FULL
1018 default:
1019 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1020 exit(1);
1021#endif
1022 }
1023
1024 http_msg_ood:
1025 /* out of data */
1026 if (ret_state)
1027 *ret_state = state;
1028 if (ret_ptr)
1029 *ret_ptr = (char *)ptr;
1030 return NULL;
1031
1032 http_msg_invalid:
1033 /* invalid message */
1034 if (ret_state)
1035 *ret_state = HTTP_MSG_ERROR;
1036 return NULL;
1037}
1038
1039
1040/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1041 * This function parses a request line between <ptr> and <end>, starting with
1042 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1043 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1044 * will give undefined results.
1045 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1046 * and that msg->sol points to the beginning of the request.
1047 * If a complete line is found (which implies that at least one CR or LF is
1048 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1049 * returned indicating an incomplete line (which does not mean that parts have
1050 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1051 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1052 * upon next call.
1053 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1054 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1055 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1056 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1057 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1058 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1059const char *http_parse_reqline(struct http_msg *msg, const char *msg_buf, int state,
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1060 const char *ptr, const char *end,
1061 char **ret_ptr, int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1062{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1063 __label__
1064 http_msg_rqmeth,
1065 http_msg_rqmeth_sp,
1066 http_msg_rquri,
1067 http_msg_rquri_sp,
1068 http_msg_rqver,
1069 http_msg_rqline_eol,
1070 http_msg_ood, /* out of data */
1071 http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1072
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1073 switch (state) {
1074 http_msg_rqmeth:
1075 case HTTP_MSG_RQMETH:
1076 if (likely(HTTP_IS_TOKEN(*ptr)))
1077 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1078
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1079 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1080 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1081 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1082 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1083
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1084 if (likely(HTTP_IS_CRLF(*ptr))) {
1085 /* HTTP 0.9 request */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1086 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1087 http_msg_req09_uri:
1088 msg->sl.rq.u = ptr - msg_buf;
1089 http_msg_req09_uri_e:
1090 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1091 http_msg_req09_ver:
1092 msg->sl.rq.v = ptr - msg_buf;
1093 msg->sl.rq.v_l = 0;
1094 goto http_msg_rqline_eol;
1095 }
1096 goto http_msg_invalid;
1097
1098 http_msg_rqmeth_sp:
1099 case HTTP_MSG_RQMETH_SP:
1100 if (likely(!HTTP_IS_LWS(*ptr))) {
1101 msg->sl.rq.u = ptr - msg_buf;
1102 goto http_msg_rquri;
1103 }
1104 if (likely(HTTP_IS_SPHT(*ptr)))
1105 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1106 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1107 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1108
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1109 http_msg_rquri:
1110 case HTTP_MSG_RQURI:
1111 if (likely(!HTTP_IS_LWS(*ptr)))
1112 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1113
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1114 if (likely(HTTP_IS_SPHT(*ptr))) {
1115 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1116 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1117 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1118
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1119 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1120 goto http_msg_req09_uri_e;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1121
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1122 http_msg_rquri_sp:
1123 case HTTP_MSG_RQURI_SP:
1124 if (likely(!HTTP_IS_LWS(*ptr))) {
1125 msg->sl.rq.v = ptr - msg_buf;
1126 goto http_msg_rqver;
1127 }
1128 if (likely(HTTP_IS_SPHT(*ptr)))
1129 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1130 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1131 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1132
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1133 http_msg_rqver:
1134 case HTTP_MSG_RQVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1135 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1136 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1137
1138 if (likely(HTTP_IS_CRLF(*ptr))) {
1139 msg->sl.rq.v_l = (ptr - msg_buf) - msg->sl.rq.v;
1140 http_msg_rqline_eol:
1141 /* We have seen the end of line. Note that we do not
1142 * necessarily have the \n yet, but at least we know that we
1143 * have EITHER \r OR \n, otherwise the request would not be
1144 * complete. We can then record the request length and return
1145 * to the caller which will be able to register it.
1146 */
1147 msg->sl.rq.l = ptr - msg->sol;
1148 return ptr;
1149 }
1150
1151 /* neither an HTTP_VER token nor a CRLF */
1152 goto http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1153
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1154#ifdef DEBUG_FULL
1155 default:
1156 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1157 exit(1);
1158#endif
1159 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1160
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1161 http_msg_ood:
1162 /* out of data */
1163 if (ret_state)
1164 *ret_state = state;
1165 if (ret_ptr)
1166 *ret_ptr = (char *)ptr;
1167 return NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1168
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1169 http_msg_invalid:
1170 /* invalid message */
1171 if (ret_state)
1172 *ret_state = HTTP_MSG_ERROR;
1173 return NULL;
1174}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1175
1176
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1177/*
1178 * This function parses an HTTP message, either a request or a response,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1179 * depending on the initial msg->msg_state. It can be preempted everywhere
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1180 * when data are missing and recalled at the exact same location with no
1181 * information loss. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1182 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
1183 * fields.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1184 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1185void http_msg_analyzer(struct buffer *buf, struct http_msg *msg, struct hdr_idx *idx)
1186{
1187 __label__
1188 http_msg_rqbefore,
1189 http_msg_rqbefore_cr,
1190 http_msg_rqmeth,
1191 http_msg_rqline_end,
1192 http_msg_hdr_first,
1193 http_msg_hdr_name,
1194 http_msg_hdr_l1_sp,
1195 http_msg_hdr_l1_lf,
1196 http_msg_hdr_l1_lws,
1197 http_msg_hdr_val,
1198 http_msg_hdr_l2_lf,
1199 http_msg_hdr_l2_lws,
1200 http_msg_complete_header,
1201 http_msg_last_lf,
1202 http_msg_ood, /* out of data */
1203 http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1204
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1205 int state; /* updated only when leaving the FSM */
1206 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1207
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1208 state = msg->msg_state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1209 ptr = buf->lr;
1210 end = buf->r;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1211
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1212 if (unlikely(ptr >= end))
1213 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1214
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1215 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1216 /*
1217 * First, states that are specific to the response only.
1218 * We check them first so that request and headers are
1219 * closer to each other (accessed more often).
1220 */
1221 http_msg_rpbefore:
1222 case HTTP_MSG_RPBEFORE:
1223 if (likely(HTTP_IS_TOKEN(*ptr))) {
1224 if (likely(ptr == buf->data)) {
1225 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1226 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1227 } else {
1228#if PARSE_PRESERVE_EMPTY_LINES
1229 /* only skip empty leading lines, don't remove them */
1230 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1231 msg->som = ptr - buf->data;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1232#else
1233 /* Remove empty leading lines, as recommended by
1234 * RFC2616. This takes a lot of time because we
1235 * must move all the buffer backwards, but this
1236 * is rarely needed. The method above will be
1237 * cleaner when we'll be able to start sending
1238 * the request from any place in the buffer.
1239 */
1240 buf->lr = ptr;
1241 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1242 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1243 msg->sol = buf->data;
1244 ptr = buf->data;
1245 end = buf->r;
1246#endif
1247 }
1248 hdr_idx_init(idx);
1249 state = HTTP_MSG_RPVER;
1250 goto http_msg_rpver;
1251 }
1252
1253 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1254 goto http_msg_invalid;
1255
1256 if (unlikely(*ptr == '\n'))
1257 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1258 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1259 /* stop here */
1260
1261 http_msg_rpbefore_cr:
1262 case HTTP_MSG_RPBEFORE_CR:
1263 EXPECT_LF_HERE(ptr, http_msg_invalid);
1264 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1265 /* stop here */
1266
1267 http_msg_rpver:
1268 case HTTP_MSG_RPVER:
1269 case HTTP_MSG_RPVER_SP:
1270 case HTTP_MSG_RPCODE:
1271 case HTTP_MSG_RPCODE_SP:
1272 case HTTP_MSG_RPREASON:
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1273 ptr = (char *)http_parse_stsline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1274 &buf->lr, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1275 if (unlikely(!ptr))
1276 return;
1277
1278 /* we have a full response and we know that we have either a CR
1279 * or an LF at <ptr>.
1280 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1281 //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]1282 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1283
1284 msg->sol = ptr;
1285 if (likely(*ptr == '\r'))
1286 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1287 goto http_msg_rpline_end;
1288
1289 http_msg_rpline_end:
1290 case HTTP_MSG_RPLINE_END:
1291 /* msg->sol must point to the first of CR or LF. */
1292 EXPECT_LF_HERE(ptr, http_msg_invalid);
1293 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1294 /* stop here */
1295
1296 /*
1297 * Second, states that are specific to the request only
1298 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1299 http_msg_rqbefore:
1300 case HTTP_MSG_RQBEFORE:
1301 if (likely(HTTP_IS_TOKEN(*ptr))) {
1302 if (likely(ptr == buf->data)) {
1303 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1304 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1305 } else {
1306#if PARSE_PRESERVE_EMPTY_LINES
1307 /* only skip empty leading lines, don't remove them */
1308 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1309 msg->som = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1310#else
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1311 /* Remove empty leading lines, as recommended by
1312 * RFC2616. This takes a lot of time because we
1313 * must move all the buffer backwards, but this
1314 * is rarely needed. The method above will be
1315 * cleaner when we'll be able to start sending
1316 * the request from any place in the buffer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1317 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1318 buf->lr = ptr;
1319 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1320 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1321 msg->sol = buf->data;
1322 ptr = buf->data;
1323 end = buf->r;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1324#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1325 }
Willy Tarreauf0d058e2007-01-25 12:03:42 +0100[diff] [blame]1326 /* we will need this when keep-alive will be supported
1327 hdr_idx_init(idx);
1328 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1329 state = HTTP_MSG_RQMETH;
1330 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1331 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1332
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1333 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1334 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1335
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1336 if (unlikely(*ptr == '\n'))
1337 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1338 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1339 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1340
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1341 http_msg_rqbefore_cr:
1342 case HTTP_MSG_RQBEFORE_CR:
1343 EXPECT_LF_HERE(ptr, http_msg_invalid);
1344 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1345 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1346
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1347 http_msg_rqmeth:
1348 case HTTP_MSG_RQMETH:
1349 case HTTP_MSG_RQMETH_SP:
1350 case HTTP_MSG_RQURI:
1351 case HTTP_MSG_RQURI_SP:
1352 case HTTP_MSG_RQVER:
1353 ptr = (char *)http_parse_reqline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1354 &buf->lr, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1355 if (unlikely(!ptr))
1356 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1357
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1358 /* we have a full request and we know that we have either a CR
1359 * or an LF at <ptr>.
1360 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1361 //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]1362 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1363
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1364 msg->sol = ptr;
1365 if (likely(*ptr == '\r'))
1366 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1367 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1368
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1369 http_msg_rqline_end:
1370 case HTTP_MSG_RQLINE_END:
1371 /* check for HTTP/0.9 request : no version information available.
1372 * msg->sol must point to the first of CR or LF.
1373 */
1374 if (unlikely(msg->sl.rq.v_l == 0))
1375 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1376
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1377 EXPECT_LF_HERE(ptr, http_msg_invalid);
1378 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1379 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1380
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1381 /*
1382 * Common states below
1383 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1384 http_msg_hdr_first:
1385 case HTTP_MSG_HDR_FIRST:
1386 msg->sol = ptr;
1387 if (likely(!HTTP_IS_CRLF(*ptr))) {
1388 goto http_msg_hdr_name;
1389 }
1390
1391 if (likely(*ptr == '\r'))
1392 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1393 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1394
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1395 http_msg_hdr_name:
1396 case HTTP_MSG_HDR_NAME:
1397 /* assumes msg->sol points to the first char */
1398 if (likely(HTTP_IS_TOKEN(*ptr)))
1399 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1400
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1401 if (likely(*ptr == ':')) {
1402 msg->col = ptr - buf->data;
1403 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
1404 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1405
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1406 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1407
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1408 http_msg_hdr_l1_sp:
1409 case HTTP_MSG_HDR_L1_SP:
1410 /* assumes msg->sol points to the first char and msg->col to the colon */
1411 if (likely(HTTP_IS_SPHT(*ptr)))
1412 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]1413
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1414 /* header value can be basically anything except CR/LF */
1415 msg->sov = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1416
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1417 if (likely(!HTTP_IS_CRLF(*ptr))) {
1418 goto http_msg_hdr_val;
1419 }
1420
1421 if (likely(*ptr == '\r'))
1422 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1423 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1424
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1425 http_msg_hdr_l1_lf:
1426 case HTTP_MSG_HDR_L1_LF:
1427 EXPECT_LF_HERE(ptr, http_msg_invalid);
1428 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]1429
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1430 http_msg_hdr_l1_lws:
1431 case HTTP_MSG_HDR_L1_LWS:
1432 if (likely(HTTP_IS_SPHT(*ptr))) {
1433 /* replace HT,CR,LF with spaces */
1434 for (; buf->data+msg->sov < ptr; msg->sov++)
1435 buf->data[msg->sov] = ' ';
1436 goto http_msg_hdr_l1_sp;
1437 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1438 /* we had a header consisting only in spaces ! */
1439 msg->eol = buf->data + msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1440 goto http_msg_complete_header;
1441
1442 http_msg_hdr_val:
1443 case HTTP_MSG_HDR_VAL:
1444 /* assumes msg->sol points to the first char, msg->col to the
1445 * colon, and msg->sov points to the first character of the
1446 * value.
1447 */
1448 if (likely(!HTTP_IS_CRLF(*ptr)))
1449 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1450
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1451 msg->eol = ptr;
1452 /* Note: we could also copy eol into ->eoh so that we have the
1453 * real header end in case it ends with lots of LWS, but is this
1454 * really needed ?
1455 */
1456 if (likely(*ptr == '\r'))
1457 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1458 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1459
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1460 http_msg_hdr_l2_lf:
1461 case HTTP_MSG_HDR_L2_LF:
1462 EXPECT_LF_HERE(ptr, http_msg_invalid);
1463 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]1464
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1465 http_msg_hdr_l2_lws:
1466 case HTTP_MSG_HDR_L2_LWS:
1467 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1468 /* LWS: replace HT,CR,LF with spaces */
1469 for (; msg->eol < ptr; msg->eol++)
1470 *msg->eol = ' ';
1471 goto http_msg_hdr_val;
1472 }
1473 http_msg_complete_header:
1474 /*
1475 * It was a new header, so the last one is finished.
1476 * Assumes msg->sol points to the first char, msg->col to the
1477 * colon, msg->sov points to the first character of the value
1478 * and msg->eol to the first CR or LF so we know how the line
1479 * ends. We insert last header into the index.
1480 */
1481 /*
1482 fprintf(stderr,"registering %-2d bytes : ", msg->eol - msg->sol);
1483 write(2, msg->sol, msg->eol-msg->sol);
1484 fprintf(stderr,"\n");
1485 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1486
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1487 if (unlikely(hdr_idx_add(msg->eol - msg->sol, *msg->eol == '\r',
1488 idx, idx->tail) < 0))
1489 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1490
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1491 msg->sol = ptr;
1492 if (likely(!HTTP_IS_CRLF(*ptr))) {
1493 goto http_msg_hdr_name;
1494 }
1495
1496 if (likely(*ptr == '\r'))
1497 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1498 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1499
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1500 http_msg_last_lf:
1501 case HTTP_MSG_LAST_LF:
1502 /* Assumes msg->sol points to the first of either CR or LF */
1503 EXPECT_LF_HERE(ptr, http_msg_invalid);
1504 ptr++;
1505 buf->lr = ptr;
1506 msg->eoh = msg->sol - buf->data;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1507 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1508 return;
1509#ifdef DEBUG_FULL
1510 default:
1511 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1512 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1513#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1514 }
1515 http_msg_ood:
1516 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1517 msg->msg_state = state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1518 buf->lr = ptr;
1519 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1520
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1521 http_msg_invalid:
1522 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1523 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1524 return;
1525}
1526
1527/*
1528 * manages the client FSM and its socket. BTW, it also tries to handle the
1529 * cookie. It returns 1 if a state has changed (and a resync may be needed),
1530 * 0 else.
1531 */
1532int process_cli(struct session *t)
1533{
1534 int s = t->srv_state;
1535 int c = t->cli_state;
1536 struct buffer *req = t->req;
1537 struct buffer *rep = t->rep;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1538
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1539 DPRINTF(stderr,"process_cli: c=%s s=%s set(r,w)=%d,%d exp(r,w)=%d.%d,%d.%d\n",
1540 cli_stnames[c], srv_stnames[s],
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1541 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]1542 req->rex.tv_sec, req->rex.tv_usec,
1543 rep->wex.tv_sec, rep->wex.tv_usec);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1544
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1545 if (c == CL_STHEADERS) {
1546 /*
1547 * Now parse the partial (or complete) lines.
1548 * We will check the request syntax, and also join multi-line
1549 * headers. An index of all the lines will be elaborated while
1550 * parsing.
1551 *
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1552 * For the parsing, we use a 28 states FSM.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1553 *
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1554 * Here is the information we currently have :
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1555 * req->data + req->som = beginning of request
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1556 * req->data + req->eoh = end of processed headers / start of current one
1557 * req->data + req->eol = end of current header or line (LF or CRLF)
1558 * req->lr = first non-visited byte
1559 * req->r = end of data
1560 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1561
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1562 int cur_idx;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1563 struct http_txn *txn = &t->txn;
1564 struct http_msg *msg = &txn->req;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1565 struct proxy *cur_proxy;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1566
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1567 if (likely(req->lr < req->r))
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1568 http_msg_analyzer(req, msg, &txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1569
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1570 /* 1: we might have to print this header in debug mode */
1571 if (unlikely((global.mode & MODE_DEBUG) &&
1572 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1573 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1574 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1575
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1576 sol = req->data + msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1577 eol = sol + msg->sl.rq.l;
1578 debug_hdr("clireq", t, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1579
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1580 sol += hdr_idx_first_pos(&txn->hdr_idx);
1581 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1582
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1583 while (cur_idx) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1584 eol = sol + txn->hdr_idx.v[cur_idx].len;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1585 debug_hdr("clihdr", t, sol, eol);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1586 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
1587 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1588 }
1589 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1590
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1591
1592 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1593 * Now we quickly check if we have found a full valid request.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1594 * If not so, we check the FD and buffer states before leaving.
1595 * A full request is indicated by the fact that we have seen
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1596 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
1597 * requests are checked first.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1598 *
1599 */
1600
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1601 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1602 /*
1603 * First, let's catch bad requests.
1604 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1605 if (unlikely(msg->msg_state == HTTP_MSG_ERROR))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1606 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1607
1608 /* 1: Since we are in header mode, if there's no space
1609 * left for headers, we won't be able to free more
1610 * later, so the session will never terminate. We
1611 * must terminate it now.
1612 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1613 if (unlikely(req->l >= req->rlim - req->data)) {
1614 /* FIXME: check if URI is set and return Status
1615 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1616 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1617 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1618 }
1619
1620 /* 2: have we encountered a read error or a close ? */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1621 else if (unlikely(req->flags & (BF_READ_ERROR | BF_READ_NULL))) {
1622 /* read error, or last read : give up. */
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]1623 buffer_shutr(req);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1624 fd_delete(t->cli_fd);
1625 t->cli_state = CL_STCLOSE;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]1626 t->fe->failed_req++;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1627 if (!(t->flags & SN_ERR_MASK))
1628 t->flags |= SN_ERR_CLICL;
1629 if (!(t->flags & SN_FINST_MASK))
1630 t->flags |= SN_FINST_R;
1631 return 1;
1632 }
1633
1634 /* 3: has the read timeout expired ? */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]1635 else if (unlikely(tv_isle(&req->rex, &now))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1636 /* read timeout : give up with an error message. */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1637 txn->status = 408;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1638 client_retnclose(t, error_message(t, HTTP_ERR_408));
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]1639 t->fe->failed_req++;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1640 if (!(t->flags & SN_ERR_MASK))
1641 t->flags |= SN_ERR_CLITO;
1642 if (!(t->flags & SN_FINST_MASK))
1643 t->flags |= SN_FINST_R;
1644 return 1;
1645 }
1646
1647 /* 4: do we need to re-enable the read socket ? */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]1648 else if (unlikely(EV_FD_COND_S(t->cli_fd, DIR_RD))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1649 /* fd in DIR_RD was disabled, perhaps because of a previous buffer
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1650 * full. We cannot loop here since stream_sock_read will disable it only if
1651 * req->l == rlim-data
1652 */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]1653 if (!tv_add_ifset(&req->rex, &now, &t->fe->clitimeout))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1654 tv_eternity(&req->rex);
1655 }
1656 return t->cli_state != CL_STHEADERS;
1657 }
1658
1659
1660 /****************************************************************
1661 * More interesting part now : we know that we have a complete *
1662 * request which at least looks like HTTP. We have an indicator *
1663 * of each header's length, so we can parse them quickly. *
1664 ****************************************************************/
1665
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1666 /* ensure we keep this pointer to the beginning of the message */
1667 msg->sol = req->data + msg->som;
1668
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1669 /*
1670 * 1: identify the method
1671 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1672 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1673
1674 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1675 * 2: check if the URI matches the monitor_uri.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1676 * We have to do this for every request which gets in, because
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1677 * the monitor-uri is defined by the frontend.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1678 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1679 if (unlikely((t->fe->monitor_uri_len != 0) &&
1680 (t->fe->monitor_uri_len == msg->sl.rq.u_l) &&
1681 !memcmp(&req->data[msg->sl.rq.u],
1682 t->fe->monitor_uri,
1683 t->fe->monitor_uri_len))) {
1684 /*
1685 * We have found the monitor URI
1686 */
1687 t->flags |= SN_MONITOR;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1688 txn->status = 200;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1689 client_retnclose(t, &http_200_chunk);
1690 goto return_prx_cond;
1691 }
1692
1693 /*
1694 * 3: Maybe we have to copy the original REQURI for the logs ?
1695 * Note: we cannot log anymore if the request has been
1696 * classified as invalid.
1697 */
1698 if (unlikely(t->logs.logwait & LW_REQ)) {
1699 /* we have a complete HTTP request that we must log */
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]1700 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1701 int urilen = msg->sl.rq.l;
1702
1703 if (urilen >= REQURI_LEN)
1704 urilen = REQURI_LEN - 1;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1705 memcpy(txn->uri, &req->data[msg->som], urilen);
1706 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1707
1708 if (!(t->logs.logwait &= ~LW_REQ))
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1709 http_sess_log(t);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1710 } else {
1711 Alert("HTTP logging : out of memory.\n");
1712 }
1713 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1714
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1715
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1716 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
1717 if (unlikely(msg->sl.rq.v_l == 0)) {
1718 int delta;
1719 char *cur_end;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1720 msg->sol = req->data + msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1721 cur_end = msg->sol + msg->sl.rq.l;
1722 delta = 0;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1723
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1724 if (msg->sl.rq.u_l == 0) {
1725 /* if no URI was set, add "/" */
1726 delta = buffer_replace2(req, cur_end, cur_end, " /", 2);
1727 cur_end += delta;
1728 msg->eoh += delta;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1729 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1730 /* add HTTP version */
1731 delta = buffer_replace2(req, cur_end, cur_end, " HTTP/1.0\r\n", 11);
1732 msg->eoh += delta;
1733 cur_end += delta;
1734 cur_end = (char *)http_parse_reqline(msg, req->data,
1735 HTTP_MSG_RQMETH,
1736 msg->sol, cur_end + 1,
1737 NULL, NULL);
1738 if (unlikely(!cur_end))
1739 goto return_bad_req;
1740
1741 /* we have a full HTTP/1.0 request now and we know that
1742 * we have either a CR or an LF at <ptr>.
1743 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1744 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1745 }
1746
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1747
1748 /* 5: we may need to capture headers */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1749 if (unlikely((t->logs.logwait & LW_REQHDR) && t->fe->req_cap))
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1750 capture_headers(req->data + msg->som, &txn->hdr_idx,
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1751 txn->req.cap, t->fe->req_cap);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1752
1753 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1754 * 6: we will have to evaluate the filters.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1755 * As opposed to version 1.2, now they will be evaluated in the
1756 * filters order and not in the header order. This means that
1757 * each filter has to be validated among all headers.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1758 *
1759 * We can now check whether we want to switch to another
1760 * backend, in which case we will re-check the backend's
1761 * filters and various options. In order to support 3-level
1762 * switching, here's how we should proceed :
1763 *
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1764 * a) run be.
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1765 * if (switch) then switch ->be to the new backend.
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1766 * b) run be if (be != fe).
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1767 * There cannot be any switch from there, so ->be cannot be
1768 * changed anymore.
1769 *
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1770 * => filters always apply to ->be, then ->be may change.
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1771 *
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1772 * The response path will be able to apply either ->be, or
1773 * ->be then ->fe filters in order to match the reverse of
1774 * the forward sequence.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1775 */
1776
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1777 do {
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1778 struct acl_cond *cond;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1779 struct proxy *rule_set = t->be;
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1780 cur_proxy = t->be;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1781
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1782 /* first check whether we have some ACLs set to block this request */
1783 list_for_each_entry(cond, &cur_proxy->block_cond, list) {
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]1784 int ret = acl_exec_cond(cond, cur_proxy, t, txn, ACL_DIR_REQ);
Willy Tarreau5c8e3e02007-05-07 00:58:25 +0200[diff] [blame]1785 if (cond->pol == ACL_COND_UNLESS)
1786 ret = !ret;
1787
1788 if (ret) {
1789 txn->status = 403;
1790 /* let's log the request time */
1791 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
1792 client_retnclose(t, error_message(t, HTTP_ERR_403));
1793 goto return_prx_cond;
1794 }
1795 }
1796
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1797 /* try headers filters */
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1798 if (rule_set->req_exp != NULL) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1799 if (apply_filters_to_request(t, req, rule_set->req_exp) < 0)
1800 goto return_bad_req;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1801 }
1802
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1803 if (!(t->flags & SN_BE_ASSIGNED) && (t->be != cur_proxy)) {
1804 /* to ensure correct connection accounting on
1805 * the backend, we count the connection for the
1806 * one managing the queue.
1807 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1808 t->be->beconn++;
1809 if (t->be->beconn > t->be->beconn_max)
1810 t->be->beconn_max = t->be->beconn;
1811 t->be->cum_beconn++;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1812 t->flags |= SN_BE_ASSIGNED;
1813 }
1814
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1815 /* has the request been denied ? */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]1816 if (txn->flags & TX_CLDENY) {
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1817 /* no need to go further */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1818 txn->status = 403;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1819 /* let's log the request time */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]1820 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1821 client_retnclose(t, error_message(t, HTTP_ERR_403));
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1822 goto return_prx_cond;
1823 }
1824
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1825 /* We might have to check for "Connection:" */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1826 if (((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1827 !(t->flags & SN_CONN_CLOSED)) {
1828 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1829 int cur_idx, old_idx, delta, val;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1830 struct hdr_idx_elem *cur_hdr;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1831
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1832 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1833 old_idx = 0;
1834
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1835 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
1836 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1837 cur_ptr = cur_next;
1838 cur_end = cur_ptr + cur_hdr->len;
1839 cur_next = cur_end + cur_hdr->cr + 1;
1840
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1841 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
1842 if (val) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1843 /* 3 possibilities :
1844 * - we have already set Connection: close,
1845 * so we remove this line.
1846 * - we have not yet set Connection: close,
1847 * but this line indicates close. We leave
1848 * it untouched and set the flag.
1849 * - we have not yet set Connection: close,
1850 * and this line indicates non-close. We
1851 * replace it.
1852 */
1853 if (t->flags & SN_CONN_CLOSED) {
1854 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1855 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1856 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1857 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
1858 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1859 cur_hdr->len = 0;
1860 } else {
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1861 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
1862 delta = buffer_replace2(req, cur_ptr + val, cur_end,
1863 "close", 5);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1864 cur_next += delta;
1865 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1866 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1867 }
1868 t->flags |= SN_CONN_CLOSED;
1869 }
1870 }
1871 old_idx = cur_idx;
1872 }
Willy Tarreauf2f0ee82007-03-30 12:02:43 +0200[diff] [blame]1873 }
1874 /* add request headers from the rule sets in the same order */
1875 for (cur_idx = 0; cur_idx < rule_set->nb_reqadd; cur_idx++) {
1876 if (unlikely(http_header_add_tail(req,
1877 &txn->req,
1878 &txn->hdr_idx,
1879 rule_set->req_add[cur_idx])) < 0)
1880 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1881 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]1882
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1883 /* check if stats URI was requested, and if an auth is needed */
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]1884 if (rule_set->uri_auth != NULL &&
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1885 (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)) {
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]1886 /* we have to check the URI and auth for this request */
1887 if (stats_check_uri_auth(t, rule_set))
1888 return 1;
1889 }
1890
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]1891 /* now check whether we have some switching rules for this request */
1892 if (!(t->flags & SN_BE_ASSIGNED)) {
1893 struct switching_rule *rule;
1894
1895 list_for_each_entry(rule, &cur_proxy->switching_rules, list) {
1896 int ret;
1897
1898 ret = acl_exec_cond(rule->cond, cur_proxy, t, txn, ACL_DIR_REQ);
1899 if (cond->pol == ACL_COND_UNLESS)
1900 ret = !ret;
1901
1902 if (ret) {
1903 t->be = rule->be.backend;
1904 t->be->beconn++;
1905 if (t->be->beconn > t->be->beconn_max)
1906 t->be->beconn_max = t->be->beconn;
1907 t->be->cum_beconn++;
1908 t->flags |= SN_BE_ASSIGNED;
1909 break;
1910 }
1911 }
1912 }
1913
Willy Tarreau5fdfb912007-01-01 23:11:07 +0100[diff] [blame]1914 if (!(t->flags & SN_BE_ASSIGNED) && cur_proxy->defbe.be) {
1915 /* No backend was set, but there was a default
1916 * backend set in the frontend, so we use it and
1917 * loop again.
1918 */
1919 t->be = cur_proxy->defbe.be;
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 Tarreau5fdfb912007-01-01 23:11:07 +0100[diff] [blame]1924 t->flags |= SN_BE_ASSIGNED;
1925 }
1926 } while (t->be != cur_proxy); /* we loop only if t->be has changed */
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1927
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1928
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1929 if (!(t->flags & SN_BE_ASSIGNED)) {
1930 /* To ensure correct connection accounting on
1931 * the backend, we count the connection for the
1932 * one managing the queue.
1933 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1934 t->be->beconn++;
1935 if (t->be->beconn > t->be->beconn_max)
1936 t->be->beconn_max = t->be->beconn;
1937 t->be->cum_beconn++;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1938 t->flags |= SN_BE_ASSIGNED;
1939 }
1940
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1941 /*
1942 * Right now, we know that we have processed the entire headers
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1943 * and that unwanted requests have been filtered out. We can do
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1944 * whatever we want with the remaining request. Also, now we
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1945 * may have separate values for ->fe, ->be.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1946 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1947
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1948
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1949
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1950
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1951 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1952 * 7: the appsession cookie was looked up very early in 1.2,
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1953 * so let's do the same now.
1954 */
1955
1956 /* It needs to look into the URI */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1957 if (t->be->appsession_name) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1958 get_srv_from_appsession(t, &req->data[msg->som], msg->sl.rq.l);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1959 }
1960
1961
1962 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1963 * 8: Now we can work with the cookies.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1964 * Note that doing so might move headers in the request, but
1965 * the fields will stay coherent and the URI will not move.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1966 * This should only be performed in the backend.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1967 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]1968 if (!(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1969 manage_client_side_cookies(t, req);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1970
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1971
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1972 /*
Willy Tarreaubb046ac2007-03-03 19:17:03 +0100[diff] [blame]1973 * 9: add X-Forwarded-For if either the frontend or the backend
1974 * asks for it.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1975 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1976 if ((t->fe->options | t->be->options) & PR_O_FWDFOR) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1977 if (t->cli_addr.ss_family == AF_INET) {
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]1978 /* Add an X-Forwarded-For header unless the source IP is
1979 * in the 'except' network range.
1980 */
1981 if ((!t->fe->except_mask.s_addr ||
1982 (((struct sockaddr_in *)&t->cli_addr)->sin_addr.s_addr & t->fe->except_mask.s_addr)
1983 != t->fe->except_net.s_addr) &&
1984 (!t->be->except_mask.s_addr ||
1985 (((struct sockaddr_in *)&t->cli_addr)->sin_addr.s_addr & t->be->except_mask.s_addr)
1986 != t->be->except_net.s_addr)) {
1987 int len;
1988 unsigned char *pn;
1989 pn = (unsigned char *)&((struct sockaddr_in *)&t->cli_addr)->sin_addr;
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1990
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]1991 len = sprintf(trash, "X-Forwarded-For: %d.%d.%d.%d",
1992 pn[0], pn[1], pn[2], pn[3]);
1993
1994 if (unlikely(http_header_add_tail2(req, &txn->req,
1995 &txn->hdr_idx, trash, len)) < 0)
1996 goto return_bad_req;
1997 }
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1998 }
1999 else if (t->cli_addr.ss_family == AF_INET6) {
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2000 /* FIXME: for the sake of completeness, we should also support
2001 * 'except' here, although it is mostly useless in this case.
2002 */
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2003 int len;
2004 char pn[INET6_ADDRSTRLEN];
2005 inet_ntop(AF_INET6,
2006 (const void *)&((struct sockaddr_in6 *)(&t->cli_addr))->sin6_addr,
2007 pn, sizeof(pn));
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2008 len = sprintf(trash, "X-Forwarded-For: %s", pn);
2009 if (unlikely(http_header_add_tail2(req, &txn->req,
2010 &txn->hdr_idx, trash, len)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2011 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2012 }
2013 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2014
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2015 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2016 * 10: add "Connection: close" if needed and not yet set.
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2017 * 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]2018 */
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2019 if (!(t->flags & SN_CONN_CLOSED) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2020 ((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE)) {
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2021 if ((unlikely(msg->sl.rq.v_l != 8) ||
2022 unlikely(req->data[msg->som + msg->sl.rq.v + 7] != '0')) &&
2023 unlikely(http_header_add_tail2(req, &txn->req, &txn->hdr_idx,
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2024 "Connection: close", 17)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2025 goto return_bad_req;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2026 t->flags |= SN_CONN_CLOSED;
Willy Tarreaue15d9132006-12-14 22:26:42 +0100[diff] [blame]2027 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2028
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2029 /*************************************************************
2030 * OK, that's finished for the headers. We have done what we *
2031 * could. Let's switch to the DATA state. *
2032 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2033
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2034 t->cli_state = CL_STDATA;
2035 req->rlim = req->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2036
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2037 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2038
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]2039 if (!tv_isset(&t->fe->clitimeout) ||
2040 (t->srv_state < SV_STDATA && tv_isset(&t->be->srvtimeout))) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2041 /* If the client has no timeout, or if the server is not ready yet,
2042 * and we know for sure that it can expire, then it's cleaner to
2043 * disable the timeout on the client side so that too low values
2044 * cannot make the sessions abort too early.
2045 *
2046 * FIXME-20050705: the server needs a way to re-enable this time-out
2047 * when it switches its state, otherwise a client can stay connected
2048 * indefinitely. This now seems to be OK.
2049 */
2050 tv_eternity(&req->rex);
2051 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2052
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2053 /* When a connection is tarpitted, we use the queue timeout for the
2054 * tarpit delay, which currently happens to be the server's connect
2055 * timeout. If unset, then set it to zero because we really want it
2056 * to expire at one moment.
2057 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2058 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2059 t->req->l = 0;
2060 /* flush the request so that we can drop the connection early
2061 * if the client closes first.
2062 */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2063 if (!tv_add_ifset(&req->cex, &now, &t->be->contimeout))
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]2064 req->cex = now;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2065 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2066
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2067 /* OK let's go on with the BODY now */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2068 goto process_data;
2069
2070 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]2071 txn->req.msg_state = HTTP_MSG_ERROR;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2072 txn->status = 400;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2073 client_retnclose(t, error_message(t, HTTP_ERR_400));
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]2074 t->fe->failed_req++;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2075 return_prx_cond:
2076 if (!(t->flags & SN_ERR_MASK))
2077 t->flags |= SN_ERR_PRXCOND;
2078 if (!(t->flags & SN_FINST_MASK))
2079 t->flags |= SN_FINST_R;
2080 return 1;
2081
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2082 }
2083 else if (c == CL_STDATA) {
2084 process_data:
2085 /* FIXME: this error handling is partly buggy because we always report
2086 * a 'DATA' phase while we don't know if the server was in IDLE, CONN
2087 * or HEADER phase. BTW, it's not logical to expire the client while
2088 * we're waiting for the server to connect.
2089 */
2090 /* read or write error */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2091 if (rep->flags & BF_WRITE_ERROR || req->flags & BF_READ_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2092 buffer_shutr(req);
2093 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2094 fd_delete(t->cli_fd);
2095 t->cli_state = CL_STCLOSE;
2096 if (!(t->flags & SN_ERR_MASK))
2097 t->flags |= SN_ERR_CLICL;
2098 if (!(t->flags & SN_FINST_MASK)) {
2099 if (t->pend_pos)
2100 t->flags |= SN_FINST_Q;
2101 else if (s == SV_STCONN)
2102 t->flags |= SN_FINST_C;
2103 else
2104 t->flags |= SN_FINST_D;
2105 }
2106 return 1;
2107 }
2108 /* last read, or end of server write */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2109 else if (req->flags & BF_READ_NULL || s == SV_STSHUTW || s == SV_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2110 EV_FD_CLR(t->cli_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2111 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2112 t->cli_state = CL_STSHUTR;
2113 return 1;
2114 }
2115 /* last server read and buffer empty */
2116 else if ((s == SV_STSHUTR || s == SV_STCLOSE) && (rep->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2117 EV_FD_CLR(t->cli_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2118 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2119 shutdown(t->cli_fd, SHUT_WR);
2120 /* We must ensure that the read part is still alive when switching
2121 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2122 EV_FD_SET(t->cli_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2123 tv_add_ifset(&req->rex, &now, &t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2124 t->cli_state = CL_STSHUTW;
2125 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2126 return 1;
2127 }
2128 /* read timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2129 else if (tv_isle(&req->rex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2130 EV_FD_CLR(t->cli_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2131 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2132 t->cli_state = CL_STSHUTR;
2133 if (!(t->flags & SN_ERR_MASK))
2134 t->flags |= SN_ERR_CLITO;
2135 if (!(t->flags & SN_FINST_MASK)) {
2136 if (t->pend_pos)
2137 t->flags |= SN_FINST_Q;
2138 else if (s == SV_STCONN)
2139 t->flags |= SN_FINST_C;
2140 else
2141 t->flags |= SN_FINST_D;
2142 }
2143 return 1;
2144 }
2145 /* write timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2146 else if (tv_isle(&rep->wex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2147 EV_FD_CLR(t->cli_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2148 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2149 shutdown(t->cli_fd, SHUT_WR);
2150 /* We must ensure that the read part is still alive when switching
2151 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2152 EV_FD_SET(t->cli_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2153 tv_add_ifset(&req->rex, &now, &t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2154
2155 t->cli_state = CL_STSHUTW;
2156 if (!(t->flags & SN_ERR_MASK))
2157 t->flags |= SN_ERR_CLITO;
2158 if (!(t->flags & SN_FINST_MASK)) {
2159 if (t->pend_pos)
2160 t->flags |= SN_FINST_Q;
2161 else if (s == SV_STCONN)
2162 t->flags |= SN_FINST_C;
2163 else
2164 t->flags |= SN_FINST_D;
2165 }
2166 return 1;
2167 }
2168
2169 if (req->l >= req->rlim - req->data) {
2170 /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2171 if (EV_FD_COND_C(t->cli_fd, DIR_RD)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2172 /* stop reading until we get some space */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2173 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2174 }
2175 } else {
2176 /* there's still some space in the buffer */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2177 if (EV_FD_COND_S(t->cli_fd, DIR_RD)) {
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]2178 if (!tv_isset(&t->fe->clitimeout) ||
2179 (t->srv_state < SV_STDATA && tv_isset(&t->be->srvtimeout)))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2180 /* If the client has no timeout, or if the server not ready yet, and we
2181 * know for sure that it can expire, then it's cleaner to disable the
2182 * timeout on the client side so that too low values cannot make the
2183 * sessions abort too early.
2184 */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2185 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2186 else
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]2187 tv_add(&req->rex, &now, &t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2188 }
2189 }
2190
2191 if ((rep->l == 0) ||
2192 ((s < SV_STDATA) /* FIXME: this may be optimized && (rep->w == rep->h)*/)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2193 if (EV_FD_COND_C(t->cli_fd, DIR_WR)) {
2194 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2195 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2196 }
2197 } else {
2198 /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2199 if (EV_FD_COND_S(t->cli_fd, DIR_WR)) {
2200 /* restart writing */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2201 if (tv_add_ifset(&rep->wex, &now, &t->fe->clitimeout)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2202 /* FIXME: to prevent the client from expiring read timeouts during writes,
2203 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2204 req->rex = rep->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2205 }
2206 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2207 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2208 }
2209 }
2210 return 0; /* other cases change nothing */
2211 }
2212 else if (c == CL_STSHUTR) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2213 if (rep->flags & BF_WRITE_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2214 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2215 fd_delete(t->cli_fd);
2216 t->cli_state = CL_STCLOSE;
2217 if (!(t->flags & SN_ERR_MASK))
2218 t->flags |= SN_ERR_CLICL;
2219 if (!(t->flags & SN_FINST_MASK)) {
2220 if (t->pend_pos)
2221 t->flags |= SN_FINST_Q;
2222 else if (s == SV_STCONN)
2223 t->flags |= SN_FINST_C;
2224 else
2225 t->flags |= SN_FINST_D;
2226 }
2227 return 1;
2228 }
2229 else if ((s == SV_STSHUTR || s == SV_STCLOSE) && (rep->l == 0)
2230 && !(t->flags & SN_SELF_GEN)) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2231 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2232 fd_delete(t->cli_fd);
2233 t->cli_state = CL_STCLOSE;
2234 return 1;
2235 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2236 else if (tv_isle(&rep->wex, &now)) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2237 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2238 fd_delete(t->cli_fd);
2239 t->cli_state = CL_STCLOSE;
2240 if (!(t->flags & SN_ERR_MASK))
2241 t->flags |= SN_ERR_CLITO;
2242 if (!(t->flags & SN_FINST_MASK)) {
2243 if (t->pend_pos)
2244 t->flags |= SN_FINST_Q;
2245 else if (s == SV_STCONN)
2246 t->flags |= SN_FINST_C;
2247 else
2248 t->flags |= SN_FINST_D;
2249 }
2250 return 1;
2251 }
2252
2253 if (t->flags & SN_SELF_GEN) {
2254 produce_content(t);
2255 if (rep->l == 0) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2256 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2257 fd_delete(t->cli_fd);
2258 t->cli_state = CL_STCLOSE;
2259 return 1;
2260 }
2261 }
2262
2263 if ((rep->l == 0)
2264 || ((s == SV_STHEADERS) /* FIXME: this may be optimized && (rep->w == rep->h)*/)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2265 if (EV_FD_COND_C(t->cli_fd, DIR_WR)) {
2266 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2267 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2268 }
2269 } else {
2270 /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2271 if (EV_FD_COND_S(t->cli_fd, DIR_WR)) {
2272 /* restart writing */
Willy Tarreau33014d02007-06-03 15:25:37 +0200[diff] [blame]2273 if (!tv_add_ifset(&rep->wex, &now, &t->fe->clitimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2274 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2275 }
2276 }
2277 return 0;
2278 }
2279 else if (c == CL_STSHUTW) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2280 if (req->flags & BF_READ_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2281 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2282 fd_delete(t->cli_fd);
2283 t->cli_state = CL_STCLOSE;
2284 if (!(t->flags & SN_ERR_MASK))
2285 t->flags |= SN_ERR_CLICL;
2286 if (!(t->flags & SN_FINST_MASK)) {
2287 if (t->pend_pos)
2288 t->flags |= SN_FINST_Q;
2289 else if (s == SV_STCONN)
2290 t->flags |= SN_FINST_C;
2291 else
2292 t->flags |= SN_FINST_D;
2293 }
2294 return 1;
2295 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2296 else if (req->flags & BF_READ_NULL || s == SV_STSHUTW || s == SV_STCLOSE) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2297 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2298 fd_delete(t->cli_fd);
2299 t->cli_state = CL_STCLOSE;
2300 return 1;
2301 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2302 else if (tv_isle(&req->rex, &now)) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2303 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2304 fd_delete(t->cli_fd);
2305 t->cli_state = CL_STCLOSE;
2306 if (!(t->flags & SN_ERR_MASK))
2307 t->flags |= SN_ERR_CLITO;
2308 if (!(t->flags & SN_FINST_MASK)) {
2309 if (t->pend_pos)
2310 t->flags |= SN_FINST_Q;
2311 else if (s == SV_STCONN)
2312 t->flags |= SN_FINST_C;
2313 else
2314 t->flags |= SN_FINST_D;
2315 }
2316 return 1;
2317 }
2318 else if (req->l >= req->rlim - req->data) {
2319 /* no room to read more data */
2320
2321 /* FIXME-20050705: is it possible for a client to maintain a session
2322 * after the timeout by sending more data after it receives a close ?
2323 */
2324
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2325 if (EV_FD_COND_C(t->cli_fd, DIR_RD)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2326 /* stop reading until we get some space */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2327 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2328 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2329 }
2330 } else {
2331 /* there's still some space in the buffer */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2332 if (EV_FD_COND_S(t->cli_fd, DIR_RD)) {
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2333 if (!tv_add_ifset(&req->rex, &now, &t->fe->clitimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2334 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2335 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2336 }
2337 }
2338 return 0;
2339 }
2340 else { /* CL_STCLOSE: nothing to do */
2341 if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
2342 int len;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2343 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]2344 write(1, trash, len);
2345 }
2346 return 0;
2347 }
2348 return 0;
2349}
2350
2351
2352/*
2353 * manages the server FSM and its socket. It returns 1 if a state has changed
2354 * (and a resync may be needed), 0 else.
2355 */
2356int process_srv(struct session *t)
2357{
2358 int s = t->srv_state;
2359 int c = t->cli_state;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2360 struct http_txn *txn = &t->txn;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2361 struct buffer *req = t->req;
2362 struct buffer *rep = t->rep;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2363 int conn_err;
2364
2365#ifdef DEBUG_FULL
2366 fprintf(stderr,"process_srv: c=%s, s=%s\n", cli_stnames[c], srv_stnames[s]);
2367#endif
Willy Tarreauee991362007-05-14 14:37:50 +0200[diff] [blame]2368
2369#if 0
2370 fprintf(stderr,"%s:%d fe->clito=%d.%d, fe->conto=%d.%d, fe->srvto=%d.%d\n",
2371 __FUNCTION__, __LINE__,
2372 t->fe->clitimeout.tv_sec, t->fe->clitimeout.tv_usec,
2373 t->fe->contimeout.tv_sec, t->fe->contimeout.tv_usec,
2374 t->fe->srvtimeout.tv_sec, t->fe->srvtimeout.tv_usec);
2375 fprintf(stderr,"%s:%d be->clito=%d.%d, be->conto=%d.%d, be->srvto=%d.%d\n",
2376 __FUNCTION__, __LINE__,
2377 t->be->clitimeout.tv_sec, t->be->clitimeout.tv_usec,
2378 t->be->contimeout.tv_sec, t->be->contimeout.tv_usec,
2379 t->be->srvtimeout.tv_sec, t->be->srvtimeout.tv_usec);
2380
2381 fprintf(stderr,"%s:%d req->cto=%d.%d, req->rto=%d.%d, req->wto=%d.%d\n",
2382 __FUNCTION__, __LINE__,
2383 req->cto.tv_sec, req->cto.tv_usec,
2384 req->rto.tv_sec, req->rto.tv_usec,
2385 req->wto.tv_sec, req->wto.tv_usec);
2386
2387 fprintf(stderr,"%s:%d rep->cto=%d.%d, rep->rto=%d.%d, rep->wto=%d.%d\n",
2388 __FUNCTION__, __LINE__,
2389 rep->cto.tv_sec, rep->cto.tv_usec,
2390 rep->rto.tv_sec, rep->rto.tv_usec,
2391 rep->wto.tv_sec, rep->wto.tv_usec);
2392#endif
2393
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2394 //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]2395 //EV_FD_ISSET(t->cli_fd, DIR_RD), EV_FD_ISSET(t->cli_fd, DIR_WR),
2396 //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]2397 //);
2398 if (s == SV_STIDLE) {
2399 if (c == CL_STHEADERS)
2400 return 0; /* stay in idle, waiting for data to reach the client side */
2401 else if (c == CL_STCLOSE || c == CL_STSHUTW ||
2402 (c == CL_STSHUTR &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2403 (t->req->l == 0 || t->be->options & PR_O_ABRT_CLOSE))) { /* give up */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2404 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2405 if (t->pend_pos)
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2406 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2407 /* note that this must not return any error because it would be able to
2408 * overwrite the client_retnclose() output.
2409 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2410 if (txn->flags & TX_CLTARPIT)
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2411 srv_close_with_err(t, SN_ERR_CLICL, SN_FINST_T, 0, NULL);
Willy Tarreau08fa2e32006-09-03 10:47:37 +0200[diff] [blame]2412 else
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2413 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]2414
2415 return 1;
2416 }
2417 else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2418 if (txn->flags & TX_CLTARPIT) {
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2419 /* This connection is being tarpitted. The CLIENT side has
2420 * already set the connect expiration date to the right
2421 * timeout. We just have to check that it has not expired.
2422 */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2423 if (!tv_isle(&req->cex, &now))
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2424 return 0;
2425
2426 /* We will set the queue timer to the time spent, just for
2427 * logging purposes. We fake a 500 server error, so that the
2428 * attacker will not suspect his connection has been tarpitted.
2429 * It will not cause trouble to the logs because we can exclude
2430 * the tarpitted connections by filtering on the 'PT' status flags.
2431 */
2432 tv_eternity(&req->cex);
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2433 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2434 srv_close_with_err(t, SN_ERR_PRXCOND, SN_FINST_T,
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2435 500, error_message(t, HTTP_ERR_500));
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2436 return 1;
2437 }
2438
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2439 /* Right now, we will need to create a connection to the server.
2440 * We might already have tried, and got a connection pending, in
2441 * which case we will not do anything till it's pending. It's up
2442 * to any other session to release it and wake us up again.
2443 */
2444 if (t->pend_pos) {
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2445 if (!tv_isle(&req->cex, &now))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2446 return 0;
2447 else {
2448 /* we've been waiting too long here */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2449 tv_eternity(&req->cex);
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2450 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2451 srv_close_with_err(t, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2452 503, error_message(t, HTTP_ERR_503));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2453 if (t->srv)
2454 t->srv->failed_conns++;
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2455 t->fe->failed_conns++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2456 return 1;
2457 }
2458 }
2459
2460 do {
2461 /* first, get a connection */
2462 if (srv_redispatch_connect(t))
2463 return t->srv_state != SV_STIDLE;
2464
2465 /* try to (re-)connect to the server, and fail if we expire the
2466 * number of retries.
2467 */
2468 if (srv_retryable_connect(t)) {
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2469 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2470 return t->srv_state != SV_STIDLE;
2471 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2472 } while (1);
2473 }
2474 }
2475 else if (s == SV_STCONN) { /* connection in progress */
2476 if (c == CL_STCLOSE || c == CL_STSHUTW ||
2477 (c == CL_STSHUTR &&
Willy Tarreauc9b654b2007-05-08 14:46:53 +0200[diff] [blame]2478 ((t->req->l == 0 && !(req->flags & BF_WRITE_STATUS)) ||
2479 t->be->options & PR_O_ABRT_CLOSE))) { /* give up */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2480 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2481 fd_delete(t->srv_fd);
2482 if (t->srv)
2483 t->srv->cur_sess--;
2484
2485 /* note that this must not return any error because it would be able to
2486 * overwrite the client_retnclose() output.
2487 */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2488 srv_close_with_err(t, SN_ERR_CLICL, SN_FINST_C, 0, NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2489 return 1;
2490 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2491 if (!(req->flags & BF_WRITE_STATUS) && !tv_isle(&req->cex, &now)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2492 //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]2493 return 0; /* nothing changed */
2494 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2495 else if (!(req->flags & BF_WRITE_STATUS) || (req->flags & BF_WRITE_ERROR)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2496 /* timeout, asynchronous connect error or first write error */
2497 //fprintf(stderr,"2: c=%d, s=%d\n", c, s);
2498
2499 fd_delete(t->srv_fd);
2500 if (t->srv)
2501 t->srv->cur_sess--;
2502
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2503 if (!(req->flags & BF_WRITE_STATUS))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2504 conn_err = SN_ERR_SRVTO; // it was a connect timeout.
2505 else
2506 conn_err = SN_ERR_SRVCL; // it was an asynchronous connect error.
2507
2508 /* ensure that we have enough retries left */
2509 if (srv_count_retry_down(t, conn_err))
2510 return 1;
2511
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2512 if (t->srv && t->conn_retries == 0 && t->be->options & PR_O_REDISP) {
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2513 /* We're on our last chance, and the REDISP option was specified.
2514 * We will ignore cookie and force to balance or use the dispatcher.
2515 */
2516 /* let's try to offer this slot to anybody */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2517 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2518 task_wakeup(t->srv->queue_mgt);
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2519
2520 if (t->srv)
2521 t->srv->failed_conns++;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2522 t->be->failed_conns++;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2523
2524 t->flags &= ~(SN_DIRECT | SN_ASSIGNED | SN_ADDR_SET);
2525 t->srv = NULL; /* it's left to the dispatcher to choose a server */
Willy Tarreaua5e65752007-03-18 20:53:22 +0100[diff] [blame]2526 http_flush_cookie_flags(txn);
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2527
2528 /* first, get a connection */
2529 if (srv_redispatch_connect(t))
2530 return t->srv_state != SV_STIDLE;
2531 }
2532
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2533 do {
2534 /* Now we will try to either reconnect to the same server or
2535 * connect to another server. If the connection gets queued
2536 * because all servers are saturated, then we will go back to
2537 * the SV_STIDLE state.
2538 */
2539 if (srv_retryable_connect(t)) {
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2540 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2541 return t->srv_state != SV_STCONN;
2542 }
2543
2544 /* we need to redispatch the connection to another server */
2545 if (srv_redispatch_connect(t))
2546 return t->srv_state != SV_STCONN;
2547 } while (1);
2548 }
2549 else { /* no error or write 0 */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2550 t->logs.t_connect = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2551
2552 //fprintf(stderr,"3: c=%d, s=%d\n", c, s);
2553 if (req->l == 0) /* nothing to write */ {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2554 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2555 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2556 } else /* need the right to write */ {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2557 EV_FD_SET(t->srv_fd, DIR_WR);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2558 if (tv_add_ifset(&req->wex, &now, &t->be->srvtimeout)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2559 /* FIXME: to prevent the server from expiring read timeouts during writes,
2560 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2561 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2562 }
2563 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2564 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2565 }
2566
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2567 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]2568 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2569 if (!tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2570 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2571
2572 t->srv_state = SV_STDATA;
2573 if (t->srv)
2574 t->srv->cum_sess++;
2575 rep->rlim = rep->data + BUFSIZE; /* no rewrite needed */
2576
2577 /* if the user wants to log as soon as possible, without counting
2578 bytes from the server, then this is the right moment. */
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2579 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2580 t->logs.t_close = t->logs.t_connect; /* to get a valid end date */
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]2581 tcp_sess_log(t);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2582 }
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]2583#ifdef CONFIG_HAP_TCPSPLICE
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2584 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]2585 /* TCP splicing supported by both FE and BE */
2586 tcp_splice_splicefd(t->cli_fd, t->srv_fd, 0);
2587 }
2588#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2589 }
2590 else {
2591 t->srv_state = SV_STHEADERS;
2592 if (t->srv)
2593 t->srv->cum_sess++;
2594 rep->rlim = rep->data + BUFSIZE - MAXREWRITE; /* rewrite needed */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2595 t->txn.rsp.msg_state = HTTP_MSG_RPBEFORE;
2596 /* reset hdr_idx which was already initialized by the request.
2597 * right now, the http parser does it.
2598 * hdr_idx_init(&t->txn.hdr_idx);
2599 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2600 }
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2601 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2602 return 1;
2603 }
2604 }
2605 else if (s == SV_STHEADERS) { /* receiving server headers */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2606 /*
2607 * Now parse the partial (or complete) lines.
2608 * We will check the response syntax, and also join multi-line
2609 * headers. An index of all the lines will be elaborated while
2610 * parsing.
2611 *
2612 * For the parsing, we use a 28 states FSM.
2613 *
2614 * Here is the information we currently have :
2615 * rep->data + req->som = beginning of response
2616 * rep->data + req->eoh = end of processed headers / start of current one
2617 * rep->data + req->eol = end of current header or line (LF or CRLF)
2618 * rep->lr = first non-visited byte
2619 * rep->r = end of data
2620 */
2621
2622 int cur_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2623 struct http_msg *msg = &txn->rsp;
2624 struct proxy *cur_proxy;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2625
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2626 if (likely(rep->lr < rep->r))
2627 http_msg_analyzer(rep, msg, &txn->hdr_idx);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2628
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2629 /* 1: we might have to print this header in debug mode */
2630 if (unlikely((global.mode & MODE_DEBUG) &&
2631 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
2632 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
2633 char *eol, *sol;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2634
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2635 sol = rep->data + msg->som;
2636 eol = sol + msg->sl.rq.l;
2637 debug_hdr("srvrep", t, sol, eol);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2638
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2639 sol += hdr_idx_first_pos(&txn->hdr_idx);
2640 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2641
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2642 while (cur_idx) {
2643 eol = sol + txn->hdr_idx.v[cur_idx].len;
2644 debug_hdr("srvhdr", t, sol, eol);
2645 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2646 cur_idx = txn->hdr_idx.v[cur_idx].next;
2647 }
2648 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2649
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2650
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2651 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]2652 /* fd in DIR_RD was disabled, perhaps because of a previous buffer
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2653 * full. We cannot loop here since stream_sock_read will disable it only if
2654 * rep->l == rlim-data
2655 */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2656 if (!tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2657 tv_eternity(&rep->rex);
2658 }
2659
2660
2661 /*
2662 * Now we quickly check if we have found a full valid response.
2663 * If not so, we check the FD and buffer states before leaving.
2664 * A full response is indicated by the fact that we have seen
2665 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
2666 * responses are checked first.
2667 *
2668 * Depending on whether the client is still there or not, we
2669 * may send an error response back or not. Note that normally
2670 * we should only check for HTTP status there, and check I/O
2671 * errors somewhere else.
2672 */
2673
2674 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
2675
2676 /* Invalid response, or read error or write error */
2677 if (unlikely((msg->msg_state == HTTP_MSG_ERROR) ||
2678 (req->flags & BF_WRITE_ERROR) ||
2679 (rep->flags & BF_READ_ERROR))) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2680 buffer_shutr(rep);
2681 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2682 fd_delete(t->srv_fd);
2683 if (t->srv) {
2684 t->srv->cur_sess--;
2685 t->srv->failed_resp++;
2686 }
2687 t->be->failed_resp++;
2688 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2689 txn->status = 502;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2690 client_return(t, error_message(t, HTTP_ERR_502));
2691 if (!(t->flags & SN_ERR_MASK))
2692 t->flags |= SN_ERR_SRVCL;
2693 if (!(t->flags & SN_FINST_MASK))
2694 t->flags |= SN_FINST_H;
2695 /* We used to have a free connection slot. Since we'll never use it,
2696 * we have to inform the server that it may be used by another session.
2697 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2698 if (t->srv && may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2699 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2700
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2701 return 1;
2702 }
2703
2704 /* end of client write or end of server read.
2705 * since we are in header mode, if there's no space left for headers, we
2706 * won't be able to free more later, so the session will never terminate.
2707 */
2708 else if (unlikely(rep->flags & BF_READ_NULL ||
2709 c == CL_STSHUTW || c == CL_STCLOSE ||
2710 rep->l >= rep->rlim - rep->data)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2711 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2712 buffer_shutr(rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2713 t->srv_state = SV_STSHUTR;
2714 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2715 return 1;
2716 }
2717
2718 /* read timeout : return a 504 to the client.
2719 */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2720 else if (unlikely(EV_FD_ISSET(t->srv_fd, DIR_RD) &&
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2721 tv_isle(&rep->rex, &now))) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2722 buffer_shutr(rep);
2723 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2724 fd_delete(t->srv_fd);
2725 if (t->srv) {
2726 t->srv->cur_sess--;
2727 t->srv->failed_resp++;
2728 }
2729 t->be->failed_resp++;
2730 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2731 txn->status = 504;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2732 client_return(t, error_message(t, HTTP_ERR_504));
2733 if (!(t->flags & SN_ERR_MASK))
2734 t->flags |= SN_ERR_SRVTO;
2735 if (!(t->flags & SN_FINST_MASK))
2736 t->flags |= SN_FINST_H;
2737 /* We used to have a free connection slot. Since we'll never use it,
2738 * we have to inform the server that it may be used by another session.
2739 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2740 if (t->srv && may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2741 task_wakeup(t->srv->queue_mgt);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2742 return 1;
2743 }
2744
2745 /* last client read and buffer empty */
2746 /* FIXME!!! here, we don't want to switch to SHUTW if the
2747 * client shuts read too early, because we may still have
2748 * some work to do on the headers.
2749 * The side-effect is that if the client completely closes its
2750 * connection during SV_STHEADER, the connection to the server
2751 * is kept until a response comes back or the timeout is reached.
2752 */
2753 else if (unlikely((/*c == CL_STSHUTR ||*/ c == CL_STCLOSE) &&
2754 (req->l == 0))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2755 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2756 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2757
2758 /* We must ensure that the read part is still
2759 * alive when switching to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2760 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2761 tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2762
2763 shutdown(t->srv_fd, SHUT_WR);
2764 t->srv_state = SV_STSHUTW;
2765 return 1;
2766 }
2767
2768 /* write timeout */
2769 /* FIXME!!! here, we don't want to switch to SHUTW if the
2770 * client shuts read too early, because we may still have
2771 * some work to do on the headers.
2772 */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2773 else if (unlikely(EV_FD_ISSET(t->srv_fd, DIR_WR) &&
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2774 tv_isle(&req->wex, &now))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2775 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2776 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2777 shutdown(t->srv_fd, SHUT_WR);
2778 /* We must ensure that the read part is still alive
2779 * when switching to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2780 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2781 tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2782
2783 t->srv_state = SV_STSHUTW;
2784 if (!(t->flags & SN_ERR_MASK))
2785 t->flags |= SN_ERR_SRVTO;
2786 if (!(t->flags & SN_FINST_MASK))
2787 t->flags |= SN_FINST_H;
2788 return 1;
2789 }
2790
2791 /*
2792 * And now the non-error cases.
2793 */
2794
2795 /* Data remaining in the request buffer.
2796 * This happens during the first pass here, and during
2797 * long posts.
2798 */
2799 else if (likely(req->l)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2800 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
2801 /* restart writing */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2802 if (tv_add_ifset(&req->wex, &now, &t->be->srvtimeout)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2803 /* FIXME: to prevent the server from expiring read timeouts during writes,
2804 * we refresh it. */
2805 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2806 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2807 else
2808 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2809 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2810 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2811
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2812 /* nothing left in the request buffer */
2813 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2814 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
2815 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2816 tv_eternity(&req->wex);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2817 }
2818 }
2819
2820 return t->srv_state != SV_STHEADERS;
2821 }
2822
2823
2824 /*****************************************************************
2825 * More interesting part now : we know that we have a complete *
2826 * response which at least looks like HTTP. We have an indicator *
2827 * of each header's length, so we can parse them quickly. *
2828 ****************************************************************/
2829
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2830 /* ensure we keep this pointer to the beginning of the message */
2831 msg->sol = rep->data + msg->som;
2832
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2833 /*
2834 * 1: get the status code and check for cacheability.
2835 */
2836
2837 t->logs.logwait &= ~LW_RESP;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2838 txn->status = strl2ui(rep->data + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2839
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2840 switch (txn->status) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2841 case 200:
2842 case 203:
2843 case 206:
2844 case 300:
2845 case 301:
2846 case 410:
2847 /* RFC2616 @13.4:
2848 * "A response received with a status code of
2849 * 200, 203, 206, 300, 301 or 410 MAY be stored
2850 * by a cache (...) unless a cache-control
2851 * directive prohibits caching."
2852 *
2853 * RFC2616 @9.5: POST method :
2854 * "Responses to this method are not cacheable,
2855 * unless the response includes appropriate
2856 * Cache-Control or Expires header fields."
2857 */
2858 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2859 unlikely(t->be->options & PR_O_CHK_CACHE))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2860 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2861 break;
2862 default:
2863 break;
2864 }
2865
2866 /*
2867 * 2: we may need to capture headers
2868 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2869 if (unlikely((t->logs.logwait & LW_RSPHDR) && t->fe->rsp_cap))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2870 capture_headers(rep->data + msg->som, &txn->hdr_idx,
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2871 txn->rsp.cap, t->fe->rsp_cap);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2872
2873 /*
2874 * 3: we will have to evaluate the filters.
2875 * As opposed to version 1.2, now they will be evaluated in the
2876 * filters order and not in the header order. This means that
2877 * each filter has to be validated among all headers.
2878 *
2879 * Filters are tried with ->be first, then with ->fe if it is
2880 * different from ->be.
2881 */
2882
2883 t->flags &= ~SN_CONN_CLOSED; /* prepare for inspection */
2884
2885 cur_proxy = t->be;
2886 while (1) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2887 struct proxy *rule_set = cur_proxy;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2888
2889 /* try headers filters */
2890 if (rule_set->rsp_exp != NULL) {
2891 if (apply_filters_to_response(t, rep, rule_set->rsp_exp) < 0) {
2892 return_bad_resp:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2893 if (t->srv) {
2894 t->srv->cur_sess--;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2895 t->srv->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2896 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2897 cur_proxy->failed_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2898 return_srv_prx_502:
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2899 buffer_shutr(rep);
2900 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2901 fd_delete(t->srv_fd);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2902 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2903 txn->status = 502;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2904 client_return(t, error_message(t, HTTP_ERR_502));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2905 if (!(t->flags & SN_ERR_MASK))
2906 t->flags |= SN_ERR_PRXCOND;
2907 if (!(t->flags & SN_FINST_MASK))
2908 t->flags |= SN_FINST_H;
2909 /* We used to have a free connection slot. Since we'll never use it,
2910 * we have to inform the server that it may be used by another session.
2911 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2912 if (t->srv && may_dequeue_tasks(t->srv, cur_proxy))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2913 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2914 return 1;
2915 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2916 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2917
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2918 /* has the response been denied ? */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2919 if (txn->flags & TX_SVDENY) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2920 if (t->srv) {
2921 t->srv->cur_sess--;
2922 t->srv->failed_secu++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2923 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2924 cur_proxy->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2925 goto return_srv_prx_502;
2926 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2927
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2928 /* We might have to check for "Connection:" */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2929 if (((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2930 !(t->flags & SN_CONN_CLOSED)) {
2931 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2932 int cur_idx, old_idx, delta, val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2933 struct hdr_idx_elem *cur_hdr;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2934
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2935 cur_next = rep->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
2936 old_idx = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2937
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2938 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
2939 cur_hdr = &txn->hdr_idx.v[cur_idx];
2940 cur_ptr = cur_next;
2941 cur_end = cur_ptr + cur_hdr->len;
2942 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2943
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2944 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
2945 if (val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2946 /* 3 possibilities :
2947 * - we have already set Connection: close,
2948 * so we remove this line.
2949 * - we have not yet set Connection: close,
2950 * but this line indicates close. We leave
2951 * it untouched and set the flag.
2952 * - we have not yet set Connection: close,
2953 * and this line indicates non-close. We
2954 * replace it.
2955 */
2956 if (t->flags & SN_CONN_CLOSED) {
2957 delta = buffer_replace2(rep, cur_ptr, cur_next, NULL, 0);
2958 txn->rsp.eoh += delta;
2959 cur_next += delta;
2960 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
2961 txn->hdr_idx.used--;
2962 cur_hdr->len = 0;
2963 } else {
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2964 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
2965 delta = buffer_replace2(rep, cur_ptr + val, cur_end,
2966 "close", 5);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2967 cur_next += delta;
2968 cur_hdr->len += delta;
2969 txn->rsp.eoh += delta;
2970 }
2971 t->flags |= SN_CONN_CLOSED;
2972 }
2973 }
2974 old_idx = cur_idx;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2975 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2976 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2977
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2978 /* add response headers from the rule sets in the same order */
2979 for (cur_idx = 0; cur_idx < rule_set->nb_rspadd; cur_idx++) {
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2980 if (unlikely(http_header_add_tail(rep, &txn->rsp, &txn->hdr_idx,
2981 rule_set->rsp_add[cur_idx])) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2982 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2983 }
2984
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2985 /* check whether we're already working on the frontend */
2986 if (cur_proxy == t->fe)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2987 break;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2988 cur_proxy = t->fe;
2989 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2990
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2991 /*
2992 * 4: check for server cookie.
2993 */
2994 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2995
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2996 /*
2997 * 5: add server cookie in the response if needed
2998 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2999 if ((t->srv) && !(t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_INS) &&
3000 (!(t->be->options & PR_O_COOK_POST) || (txn->meth == HTTP_METH_POST))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3001 int len;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3002
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3003 /* the server is known, it's not the one the client requested, we have to
3004 * insert a set-cookie here, except if we want to insert only on POST
3005 * requests and this one isn't. Note that servers which don't have cookies
3006 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3007 */
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3008 len = sprintf(trash, "Set-Cookie: %s=%s; path=/",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3009 t->be->cookie_name,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3010 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]3011
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3012 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3013 trash, len)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3014 goto return_bad_resp;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3015 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3016
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3017 /* Here, we will tell an eventual cache on the client side that we don't
3018 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
3019 * Some caches understand the correct form: 'no-cache="set-cookie"', but
3020 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
3021 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3022 if (t->be->options & PR_O_COOK_NOC) {
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3023 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3024 "Cache-control: private", 22)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3025 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3026 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3027 }
3028
3029
3030 /*
3031 * 6: check for cache-control or pragma headers.
3032 */
3033 check_response_for_cacheability(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3034
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3035
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3036 /*
3037 * 7: check if result will be cacheable with a cookie.
3038 * We'll block the response if security checks have caught
3039 * nasty things such as a cacheable cookie.
3040 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3041 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) ==
3042 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3043 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3044
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3045 /* we're in presence of a cacheable response containing
3046 * a set-cookie header. We'll block it as requested by
3047 * the 'checkcache' option, and send an alert.
3048 */
3049 if (t->srv) {
3050 t->srv->cur_sess--;
3051 t->srv->failed_secu++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3052 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3053 t->be->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3054
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3055 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3056 t->be->id, t->srv?t->srv->id:"<dispatch>");
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3057 send_log(t->be, LOG_ALERT,
3058 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3059 t->be->id, t->srv?t->srv->id:"<dispatch>");
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3060 goto return_srv_prx_502;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3061 }
3062
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3063 /*
3064 * 8: add "Connection: close" if needed and not yet set.
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]3065 * 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]3066 */
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]3067 if (!(t->flags & SN_CONN_CLOSED) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3068 ((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE)) {
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]3069 if ((unlikely(msg->sl.st.v_l != 8) ||
3070 unlikely(req->data[msg->som + 7] != '0')) &&
3071 unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3072 "Connection: close", 17)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3073 goto return_bad_resp;
3074 t->flags |= SN_CONN_CLOSED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3075 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3076
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3077
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3078 /*************************************************************
3079 * OK, that's finished for the headers. We have done what we *
3080 * could. Let's switch to the DATA state. *
3081 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3082
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3083 t->srv_state = SV_STDATA;
3084 rep->rlim = rep->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]3085 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3086
3087 /* client connection already closed or option 'forceclose' required :
3088 * we close the server's outgoing connection right now.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3089 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3090 if ((req->l == 0) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3091 (c == CL_STSHUTR || c == CL_STCLOSE || t->be->options & PR_O_FORCE_CLO)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3092 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3093 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3094
3095 /* We must ensure that the read part is still alive when switching
3096 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3097 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3098 tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3099
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3100 shutdown(t->srv_fd, SHUT_WR);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3101 t->srv_state = SV_STSHUTW;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3102 }
3103
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3104#ifdef CONFIG_HAP_TCPSPLICE
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3105 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3106 /* TCP splicing supported by both FE and BE */
3107 tcp_splice_splicefd(t->cli_fd, t->srv_fd, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3108 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3109#endif
3110 /* if the user wants to log as soon as possible, without counting
3111 bytes from the server, then this is the right moment. */
3112 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
3113 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
Willy Tarreaub4987172007-03-18 16:28:03 +0100[diff] [blame]3114 t->logs.bytes_in = txn->rsp.eoh;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]3115 if (t->fe->to_log & LW_REQ)
3116 http_sess_log(t);
3117 else
3118 tcp_sess_log(t);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3119 }
3120
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3121 /* Note: we must not try to cheat by jumping directly to DATA,
3122 * otherwise we would not let the client side wake up.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3123 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3124
3125 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3126 }
3127 else if (s == SV_STDATA) {
3128 /* read or write error */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3129 if (req->flags & BF_WRITE_ERROR || rep->flags & BF_READ_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3130 buffer_shutr(rep);
3131 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3132 fd_delete(t->srv_fd);
3133 if (t->srv) {
3134 t->srv->cur_sess--;
3135 t->srv->failed_resp++;
3136 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3137 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3138 t->srv_state = SV_STCLOSE;
3139 if (!(t->flags & SN_ERR_MASK))
3140 t->flags |= SN_ERR_SRVCL;
3141 if (!(t->flags & SN_FINST_MASK))
3142 t->flags |= SN_FINST_D;
3143 /* We used to have a free connection slot. Since we'll never use it,
3144 * we have to inform the server that it may be used by another session.
3145 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3146 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3147 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3148
3149 return 1;
3150 }
3151 /* last read, or end of client write */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3152 else if (rep->flags & BF_READ_NULL || c == CL_STSHUTW || c == CL_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3153 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3154 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3155 t->srv_state = SV_STSHUTR;
3156 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
3157 return 1;
3158 }
3159 /* end of client read and no more data to send */
3160 else if ((c == CL_STSHUTR || c == CL_STCLOSE) && (req->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3161 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3162 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3163 shutdown(t->srv_fd, SHUT_WR);
3164 /* We must ensure that the read part is still alive when switching
3165 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3166 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3167 tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3168
3169 t->srv_state = SV_STSHUTW;
3170 return 1;
3171 }
3172 /* read timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3173 else if (tv_isle(&rep->rex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3174 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3175 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3176 t->srv_state = SV_STSHUTR;
3177 if (!(t->flags & SN_ERR_MASK))
3178 t->flags |= SN_ERR_SRVTO;
3179 if (!(t->flags & SN_FINST_MASK))
3180 t->flags |= SN_FINST_D;
3181 return 1;
3182 }
3183 /* write timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3184 else if (tv_isle(&req->wex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3185 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3186 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3187 shutdown(t->srv_fd, SHUT_WR);
3188 /* We must ensure that the read part is still alive when switching
3189 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3190 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3191 tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3192 t->srv_state = SV_STSHUTW;
3193 if (!(t->flags & SN_ERR_MASK))
3194 t->flags |= SN_ERR_SRVTO;
3195 if (!(t->flags & SN_FINST_MASK))
3196 t->flags |= SN_FINST_D;
3197 return 1;
3198 }
3199
3200 /* recompute request time-outs */
3201 if (req->l == 0) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3202 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
3203 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3204 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3205 }
3206 }
3207 else { /* buffer not empty, there are still data to be transferred */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3208 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
3209 /* restart writing */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3210 if (tv_add_ifset(&req->wex, &now, &t->be->srvtimeout)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3211 /* FIXME: to prevent the server from expiring read timeouts during writes,
3212 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3213 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3214 }
3215 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3216 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3217 }
3218 }
3219
3220 /* recompute response time-outs */
3221 if (rep->l == BUFSIZE) { /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3222 if (EV_FD_COND_C(t->srv_fd, DIR_RD)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3223 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3224 }
3225 }
3226 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3227 if (EV_FD_COND_S(t->srv_fd, DIR_RD)) {
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3228 if (!tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3229 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3230 }
3231 }
3232
3233 return 0; /* other cases change nothing */
3234 }
3235 else if (s == SV_STSHUTR) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3236 if (req->flags & BF_WRITE_ERROR) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3237 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3238 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3239 fd_delete(t->srv_fd);
3240 if (t->srv) {
3241 t->srv->cur_sess--;
3242 t->srv->failed_resp++;
3243 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3244 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3245 //close(t->srv_fd);
3246 t->srv_state = SV_STCLOSE;
3247 if (!(t->flags & SN_ERR_MASK))
3248 t->flags |= SN_ERR_SRVCL;
3249 if (!(t->flags & SN_FINST_MASK))
3250 t->flags |= SN_FINST_D;
3251 /* We used to have a free connection slot. Since we'll never use it,
3252 * we have to inform the server that it may be used by another session.
3253 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3254 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3255 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3256
3257 return 1;
3258 }
3259 else if ((c == CL_STSHUTR || c == CL_STCLOSE) && (req->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3260 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3261 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3262 fd_delete(t->srv_fd);
3263 if (t->srv)
3264 t->srv->cur_sess--;
3265 //close(t->srv_fd);
3266 t->srv_state = SV_STCLOSE;
3267 /* We used to have a free connection slot. Since we'll never use it,
3268 * we have to inform the server that it may be used by another session.
3269 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3270 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3271 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3272
3273 return 1;
3274 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3275 else if (tv_isle(&req->wex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3276 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3277 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3278 fd_delete(t->srv_fd);
3279 if (t->srv)
3280 t->srv->cur_sess--;
3281 //close(t->srv_fd);
3282 t->srv_state = SV_STCLOSE;
3283 if (!(t->flags & SN_ERR_MASK))
3284 t->flags |= SN_ERR_SRVTO;
3285 if (!(t->flags & SN_FINST_MASK))
3286 t->flags |= SN_FINST_D;
3287 /* We used to have a free connection slot. Since we'll never use it,
3288 * we have to inform the server that it may be used by another session.
3289 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3290 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3291 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3292
3293 return 1;
3294 }
3295 else if (req->l == 0) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3296 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
3297 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3298 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3299 }
3300 }
3301 else { /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3302 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
3303 /* restart writing */
Willy Tarreau33014d02007-06-03 15:25:37 +0200[diff] [blame]3304 if (!tv_add_ifset(&req->wex, &now, &t->be->srvtimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3305 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3306 }
3307 }
3308 return 0;
3309 }
3310 else if (s == SV_STSHUTW) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3311 if (rep->flags & BF_READ_ERROR) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3312 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3313 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3314 fd_delete(t->srv_fd);
3315 if (t->srv) {
3316 t->srv->cur_sess--;
3317 t->srv->failed_resp++;
3318 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3319 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3320 //close(t->srv_fd);
3321 t->srv_state = SV_STCLOSE;
3322 if (!(t->flags & SN_ERR_MASK))
3323 t->flags |= SN_ERR_SRVCL;
3324 if (!(t->flags & SN_FINST_MASK))
3325 t->flags |= SN_FINST_D;
3326 /* We used to have a free connection slot. Since we'll never use it,
3327 * we have to inform the server that it may be used by another session.
3328 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3329 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3330 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3331
3332 return 1;
3333 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3334 else if (rep->flags & BF_READ_NULL || c == CL_STSHUTW || c == CL_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3335 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3336 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3337 fd_delete(t->srv_fd);
3338 if (t->srv)
3339 t->srv->cur_sess--;
3340 //close(t->srv_fd);
3341 t->srv_state = SV_STCLOSE;
3342 /* We used to have a free connection slot. Since we'll never use it,
3343 * we have to inform the server that it may be used by another session.
3344 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3345 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3346 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3347
3348 return 1;
3349 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3350 else if (tv_isle(&rep->rex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3351 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3352 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3353 fd_delete(t->srv_fd);
3354 if (t->srv)
3355 t->srv->cur_sess--;
3356 //close(t->srv_fd);
3357 t->srv_state = SV_STCLOSE;
3358 if (!(t->flags & SN_ERR_MASK))
3359 t->flags |= SN_ERR_SRVTO;
3360 if (!(t->flags & SN_FINST_MASK))
3361 t->flags |= SN_FINST_D;
3362 /* We used to have a free connection slot. Since we'll never use it,
3363 * we have to inform the server that it may be used by another session.
3364 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3365 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3366 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3367
3368 return 1;
3369 }
3370 else if (rep->l == BUFSIZE) { /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3371 if (EV_FD_COND_C(t->srv_fd, DIR_RD)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3372 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3373 }
3374 }
3375 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3376 if (EV_FD_COND_S(t->srv_fd, DIR_RD)) {
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3377 if (!tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3378 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3379 }
3380 }
3381 return 0;
3382 }
3383 else { /* SV_STCLOSE : nothing to do */
3384 if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
3385 int len;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3386 len = sprintf(trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3387 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]3388 write(1, trash, len);
3389 }
3390 return 0;
3391 }
3392 return 0;
3393}
3394
3395
3396/*
3397 * Produces data for the session <s> depending on its source. Expects to be
3398 * called with s->cli_state == CL_STSHUTR. Right now, only statistics can be
3399 * produced. It stops by itself by unsetting the SN_SELF_GEN flag from the
3400 * session, which it uses to keep on being called when there is free space in
3401 * the buffer, of simply by letting an empty buffer upon return. It returns 1
3402 * if it changes the session state from CL_STSHUTR, otherwise 0.
3403 */
3404int produce_content(struct session *s)
3405{
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3406 if (s->data_source == DATA_SRC_NONE) {
3407 s->flags &= ~SN_SELF_GEN;
3408 return 1;
3409 }
3410 else if (s->data_source == DATA_SRC_STATS) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3411 /* dump server statistics */
3412 return produce_content_stats(s);
3413 }
3414 else {
3415 /* unknown data source */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3416 s->txn.status = 500;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3417 client_retnclose(s, error_message(s, HTTP_ERR_500));
3418 if (!(s->flags & SN_ERR_MASK))
3419 s->flags |= SN_ERR_PRXCOND;
3420 if (!(s->flags & SN_FINST_MASK))
3421 s->flags |= SN_FINST_R;
3422 s->flags &= ~SN_SELF_GEN;
3423 return 1;
3424 }
3425}
3426
3427
3428/*
3429 * Produces statistics data for the session <s>. Expects to be called with
3430 * s->cli_state == CL_STSHUTR. It stops by itself by unsetting the SN_SELF_GEN
3431 * flag from the session, which it uses to keep on being called when there is
3432 * free space in the buffer, of simply by letting an empty buffer upon return.
3433 * It returns 1 if it changes the session state from CL_STSHUTR, otherwise 0.
3434 */
3435int produce_content_stats(struct session *s)
3436{
3437 struct buffer *rep = s->rep;
3438 struct proxy *px;
3439 struct chunk msg;
3440 unsigned int up;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3441
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3442 msg.len = 0;
3443 msg.str = trash;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3444
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3445 switch (s->data_state) {
3446 case DATA_ST_INIT:
3447 /* the function had not been called yet */
3448 s->flags |= SN_SELF_GEN; // more data will follow
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3449
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3450 chunk_printf(&msg, sizeof(trash),
3451 "HTTP/1.0 200 OK\r\n"
3452 "Cache-Control: no-cache\r\n"
3453 "Connection: close\r\n"
3454 "Content-Type: text/html\r\n"
3455 "\r\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3456
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3457 s->txn.status = 200;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3458 client_retnclose(s, &msg); // send the start of the response.
3459 msg.len = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3460
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3461 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
3462 s->flags |= SN_ERR_PRXCOND; // to mark that it comes from the proxy
3463 if (!(s->flags & SN_FINST_MASK))
3464 s->flags |= SN_FINST_R;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3465
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]3466 if (s->txn.meth == HTTP_METH_HEAD) {
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]3467 /* that's all we return in case of HEAD request */
3468 s->data_state = DATA_ST_FIN;
3469 s->flags &= ~SN_SELF_GEN;
3470 return 1;
3471 }
3472
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3473 s->data_state = DATA_ST_HEAD; /* let's start producing data */
3474 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3475
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3476 case DATA_ST_HEAD:
3477 /* WARNING! This must fit in the first buffer !!! */
3478 chunk_printf(&msg, sizeof(trash),
3479 "<html><head><title>Statistics Report for " PRODUCT_NAME "</title>\n"
3480 "<meta http-equiv=\"content-type\" content=\"text/html; charset=iso-8859-1\">\n"
3481 "<style type=\"text/css\"><!--\n"
3482 "body {"
3483 " font-family: helvetica, arial;"
3484 " font-size: 12px;"
3485 " font-weight: normal;"
3486 " color: black;"
3487 " background: white;"
3488 "}\n"
3489 "th,td {"
3490 " font-size: 0.8em;"
3491 " align: center;"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3492 "}\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3493 "h1 {"
3494 " font-size: xx-large;"
3495 " margin-bottom: 0.5em;"
3496 "}\n"
3497 "h2 {"
3498 " font-family: helvetica, arial;"
3499 " font-size: x-large;"
3500 " font-weight: bold;"
3501 " font-style: italic;"
3502 " color: #6020a0;"
3503 " margin-top: 0em;"
3504 " margin-bottom: 0em;"
3505 "}\n"
3506 "h3 {"
3507 " font-family: helvetica, arial;"
3508 " font-size: 16px;"
3509 " font-weight: bold;"
3510 " color: #b00040;"
3511 " background: #e8e8d0;"
3512 " margin-top: 0em;"
3513 " margin-bottom: 0em;"
3514 "}\n"
3515 "li {"
3516 " margin-top: 0.25em;"
3517 " margin-right: 2em;"
3518 "}\n"
3519 ".hr {margin-top: 0.25em;"
3520 " border-color: black;"
3521 " border-bottom-style: solid;"
3522 "}\n"
3523 ".pxname {background: #b00040;color: #ffff40;font-weight: bold;}\n"
3524 ".titre {background: #20D0D0;color: #000000;font-weight: bold;}\n"
3525 ".total {background: #20D0D0;color: #ffff80;}\n"
3526 ".frontend {background: #e8e8d0;}\n"
3527 ".backend {background: #e8e8d0;}\n"
3528 ".active0 {background: #ff9090;}\n"
3529 ".active1 {background: #ffd020;}\n"
3530 ".active2 {background: #ffffa0;}\n"
3531 ".active3 {background: #c0ffc0;}\n"
3532 ".active4 {background: #e0e0e0;}\n"
3533 ".backup0 {background: #ff9090;}\n"
3534 ".backup1 {background: #ff80ff;}\n"
3535 ".backup2 {background: #c060ff;}\n"
3536 ".backup3 {background: #b0d0ff;}\n"
3537 ".backup4 {background: #e0e0e0;}\n"
3538 "table.tbl { border-collapse: collapse; border-style: none;}\n"
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3539 "table.tbl td { border-width: 1px 1px 1px 1px; border-style: solid solid solid solid; padding: 2px 3px; border-color: gray;}\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3540 "table.tbl th { border-width: 1px; border-style: solid solid solid solid; border-color: gray;}\n"
3541 "table.tbl th.empty { border-style: none; empty-cells: hide;}\n"
3542 "table.lgd { border-collapse: collapse; border-width: 1px; border-style: none none none solid; border-color: black;}\n"
3543 "table.lgd td { border-width: 1px; border-style: solid solid solid solid; border-color: gray; padding: 2px;}\n"
3544 "table.lgd td.noborder { border-style: none; padding: 2px; white-space: nowrap;}\n"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3545 "-->\n"
3546 "</style></head>\n");
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3547
3548 if (buffer_write_chunk(rep, &msg) != 0)
3549 return 0;
3550
3551 s->data_state = DATA_ST_INFO;
3552 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3553
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3554 case DATA_ST_INFO:
3555 up = (now.tv_sec - start_date.tv_sec);
3556
3557 /* WARNING! this has to fit the first packet too.
3558 * We are around 3.5 kB, add adding entries will
3559 * become tricky if we want to support 4kB buffers !
3560 */
3561 chunk_printf(&msg, sizeof(trash),
3562 "<body><h1><a href=\"" PRODUCT_URL "\" style=\"text-decoration: none;\">"
3563 PRODUCT_NAME "</a></h1>\n"
3564 "<h2>Statistics Report for pid %d</h2>\n"
3565 "<hr width=\"100%%\" class=\"hr\">\n"
3566 "<h3>&gt; General process information</h3>\n"
3567 "<table border=0 cols=3><tr><td align=\"left\" nowrap width=\"1%%\">\n"
3568 "<p><b>pid = </b> %d (nbproc = %d)<br>\n"
3569 "<b>uptime = </b> %dd %dh%02dm%02ds<br>\n"
3570 "<b>system limits :</b> memmax = %s%s ; ulimit-n = %d<br>\n"
3571 "<b>maxsock = </b> %d<br>\n"
3572 "<b>maxconn = </b> %d (current conns = %d)<br>\n"
3573 "</td><td align=\"center\" nowrap>\n"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3574 "<table class=\"lgd\"><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3575 "<td class=\"active3\">&nbsp;</td><td class=\"noborder\">active UP </td>"
3576 "<td class=\"backup3\">&nbsp;</td><td class=\"noborder\">backup UP </td>"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3577 "</tr><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3578 "<td class=\"active2\"></td><td class=\"noborder\">active UP, going down </td>"
3579 "<td class=\"backup2\"></td><td class=\"noborder\">backup UP, going down </td>"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3580 "</tr><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3581 "<td class=\"active1\"></td><td class=\"noborder\">active DOWN, going up </td>"
3582 "<td class=\"backup1\"></td><td class=\"noborder\">backup DOWN, going up </td>"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3583 "</tr><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3584 "<td class=\"active0\"></td><td class=\"noborder\">active or backup DOWN &nbsp;</td>"
3585 "<td class=\"active4\"></td><td class=\"noborder\">not checked </td>"
3586 "</tr></table>\n"
3587 "</td>"
3588 "<td align=\"left\" nowrap width=\"1%%\">"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3589 "<b>External ressources:</b><ul style=\"margin-top: 0.25em;\">\n"
3590 "<li><a href=\"" PRODUCT_URL "\">Primary site</a><br>\n"
3591 "<li><a href=\"" PRODUCT_URL_UPD "\">Updates (v" PRODUCT_BRANCH ")</a><br>\n"
3592 "<li><a href=\"" PRODUCT_URL_DOC "\">Online manual</a><br>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3593 "</ul>"
3594 "</td>"
3595 "</tr></table>\n"
3596 "",
3597 pid, pid, global.nbproc,
3598 up / 86400, (up % 86400) / 3600,
3599 (up % 3600) / 60, (up % 60),
3600 global.rlimit_memmax ? ultoa(global.rlimit_memmax) : "unlimited",
3601 global.rlimit_memmax ? " MB" : "",
3602 global.rlimit_nofile,
3603 global.maxsock,
3604 global.maxconn,
3605 actconn
3606 );
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3607
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3608 if (buffer_write_chunk(rep, &msg) != 0)
3609 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3610
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3611 memset(&s->data_ctx, 0, sizeof(s->data_ctx));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3612
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3613 s->data_ctx.stats.px = proxy;
3614 s->data_ctx.stats.px_st = DATA_ST_PX_INIT;
3615 s->data_state = DATA_ST_LIST;
3616 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3617
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3618 case DATA_ST_LIST:
3619 /* dump proxies */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3620 while (s->data_ctx.stats.px) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3621 px = s->data_ctx.stats.px;
3622 /* skip the disabled proxies and non-networked ones */
3623 if (px->state != PR_STSTOPPED && (px->cap & (PR_CAP_FE | PR_CAP_BE)))
3624 if (produce_content_stats_proxy(s, px) == 0)
3625 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3626
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3627 s->data_ctx.stats.px = px->next;
3628 s->data_ctx.stats.px_st = DATA_ST_PX_INIT;
3629 }
3630 /* here, we just have reached the last proxy */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3631
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3632 s->data_state = DATA_ST_END;
3633 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3634
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3635 case DATA_ST_END:
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]3636 chunk_printf(&msg, sizeof(trash), "</body></html>\n");
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3637 if (buffer_write_chunk(rep, &msg) != 0)
3638 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3639
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3640 s->data_state = DATA_ST_FIN;
3641 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3642
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3643 case DATA_ST_FIN:
3644 s->flags &= ~SN_SELF_GEN;
3645 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3646
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3647 default:
3648 /* unknown state ! */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3649 s->txn.status = 500;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3650 client_retnclose(s, error_message(s, HTTP_ERR_500));
3651 if (!(s->flags & SN_ERR_MASK))
3652 s->flags |= SN_ERR_PRXCOND;
3653 if (!(s->flags & SN_FINST_MASK))
3654 s->flags |= SN_FINST_R;
3655 s->flags &= ~SN_SELF_GEN;
3656 return 1;
3657 }
3658}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3659
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3660
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3661/*
3662 * Dumps statistics for a proxy.
3663 * Returns 0 if it had to stop dumping data because of lack of buffer space,
3664 * ot non-zero if everything completed.
3665 */
3666int produce_content_stats_proxy(struct session *s, struct proxy *px)
3667{
3668 struct buffer *rep = s->rep;
3669 struct server *sv;
3670 struct chunk msg;
3671
3672 msg.len = 0;
3673 msg.str = trash;
3674
3675 switch (s->data_ctx.stats.px_st) {
3676 case DATA_ST_PX_INIT:
3677 /* we are on a new proxy */
3678
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3679 if (s->be->uri_auth && s->be->uri_auth->scope) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3680 /* we have a limited scope, we have to check the proxy name */
3681 struct stat_scope *scope;
3682 int len;
3683
3684 len = strlen(px->id);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3685 scope = s->be->uri_auth->scope;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3686
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3687 while (scope) {
3688 /* match exact proxy name */
3689 if (scope->px_len == len && !memcmp(px->id, scope->px_id, len))
3690 break;
3691
3692 /* match '.' which means 'self' proxy */
3693 if (!strcmp(scope->px_id, ".") && px == s->fe)
3694 break;
3695 scope = scope->next;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3696 }
3697
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3698 /* proxy name not found : don't dump anything */
3699 if (scope == NULL)
3700 return 1;
3701 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3702
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3703 s->data_ctx.stats.px_st = DATA_ST_PX_TH;
3704 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3705
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3706 case DATA_ST_PX_TH:
3707 /* print a new table */
3708 chunk_printf(&msg, sizeof(trash),
3709 "<table cols=\"20\" class=\"tbl\" width=\"100%%\">\n"
3710 "<tr align=\"center\" class=\"titre\">"
3711 "<th colspan=2 class=\"pxname\">%s</th>"
3712 "<th colspan=18 class=\"empty\"></th>"
3713 "</tr>\n"
3714 "<tr align=\"center\" class=\"titre\">"
3715 "<th rowspan=2></th>"
3716 "<th colspan=2>Queue</th><th colspan=4>Sessions</th>"
3717 "<th colspan=2>Bytes</th><th colspan=2>Denied</th>"
3718 "<th colspan=3>Errors</th><th colspan=6>Server</th>"
3719 "</tr>\n"
3720 "<tr align=\"center\" class=\"titre\">"
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3721 "<th>Cur</th><th>Max</th><th>Cur</th><th>Max</th>"
3722 "<th>Limit</th><th>Cumul</th><th>In</th><th>Out</th>"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3723 "<th>Req</th><th>Resp</th><th>Req</th><th>Conn</th>"
3724 "<th>Resp</th><th>Status</th><th>Weight</th><th>Act</th>"
3725 "<th>Bck</th><th>Check</th><th>Down</th></tr>\n"
3726 "",
3727 px->id);
3728
3729 if (buffer_write_chunk(rep, &msg) != 0)
3730 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3731
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3732 s->data_ctx.stats.px_st = DATA_ST_PX_FE;
3733 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3734
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3735 case DATA_ST_PX_FE:
3736 /* print the frontend */
3737 if (px->cap & PR_CAP_FE) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3738 chunk_printf(&msg, sizeof(trash),
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3739 /* name, queue */
3740 "<tr align=center class=\"frontend\"><td>Frontend</td><td colspan=2></td>"
3741 /* sessions : current, max, limit, cumul. */
3742 "<td align=right>%d</td><td align=right>%d</td><td align=right>%d</td><td align=right>%d</td>"
3743 /* bytes : in, out */
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3744 "<td align=right>%lld</td><td align=right>%lld</td>"
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3745 /* denied: req, resp */
3746 "<td align=right>%d</td><td align=right>%d</td>"
3747 /* errors : request, connect, response */
3748 "<td align=right>%d</td><td align=right></td><td align=right></td>"
3749 /* server status : reflect backend status */
3750 "<td align=center>%s</td>"
3751 /* rest of server: nothing */
3752 "<td align=center colspan=5></td></tr>"
3753 "",
3754 px->feconn, px->feconn_max, px->maxconn, px->cum_feconn,
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3755 px->bytes_in, px->bytes_out,
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3756 px->denied_req, px->denied_resp,
3757 px->failed_req,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3758 px->state == PR_STRUN ? "OPEN" :
3759 px->state == PR_STIDLE ? "FULL" : "STOP");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3760
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3761 if (buffer_write_chunk(rep, &msg) != 0)
3762 return 0;
3763 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3764
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3765 s->data_ctx.stats.sv = px->srv; /* may be NULL */
3766 s->data_ctx.stats.px_st = DATA_ST_PX_SV;
3767 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3768
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3769 case DATA_ST_PX_SV:
3770 /* stats.sv has been initialized above */
3771 while (s->data_ctx.stats.sv != NULL) {
3772 static char *srv_hlt_st[5] = { "DOWN", "DN %d/%d &uarr;", "UP %d/%d &darr;", "UP", "<i>no check</i>" };
3773 int sv_state; /* 0=DOWN, 1=going up, 2=going down, 3=UP, 4=unchecked */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3774
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3775 sv = s->data_ctx.stats.sv;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3776
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3777 /* FIXME: produce some small strings for "UP/DOWN x/y &#xxxx;" */
3778 if (!(sv->state & SRV_CHECKED))
3779 sv_state = 4;
3780 else if (sv->state & SRV_RUNNING)
3781 if (sv->health == sv->rise + sv->fall - 1)
3782 sv_state = 3; /* UP */
3783 else
3784 sv_state = 2; /* going down */
3785 else
3786 if (sv->health)
3787 sv_state = 1; /* going up */
3788 else
3789 sv_state = 0; /* DOWN */
3790
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3791 chunk_printf(&msg, sizeof(trash),
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3792 /* name */
3793 "<tr align=\"center\" class=\"%s%d\"><td>%s</td>"
3794 /* queue : current, max */
3795 "<td align=right>%d</td><td align=right>%d</td>"
3796 /* sessions : current, max, limit, cumul */
3797 "<td align=right>%d</td><td align=right>%d</td><td align=right>%s</td><td align=right>%d</td>"
3798 /* bytes : in, out */
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3799 "<td align=right>%lld</td><td align=right>%lld</td>"
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3800 /* denied: req, resp */
3801 "<td align=right></td><td align=right>%d</td>"
3802 /* errors : request, connect, response */
3803 "<td align=right></td><td align=right>%d</td><td align=right>%d</td>\n"
3804 "",
Willy Tarreau368e96a2007-01-07 00:16:15 +0100[diff] [blame]3805 (sv->state & SRV_BACKUP) ? "backup" : "active",
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3806 sv_state, sv->id,
3807 sv->nbpend, sv->nbpend_max,
3808 sv->cur_sess, sv->cur_sess_max, sv->maxconn ? ultoa(sv->maxconn) : "-", sv->cum_sess,
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3809 sv->bytes_in, sv->bytes_out,
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3810 sv->failed_secu,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3811 sv->failed_conns, sv->failed_resp);
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3812
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3813 /* status */
3814 chunk_printf(&msg, sizeof(trash), "<td nowrap>");
3815 chunk_printf(&msg, sizeof(trash),
3816 srv_hlt_st[sv_state],
3817 (sv->state & SRV_RUNNING) ? (sv->health - sv->rise + 1) : (sv->health),
3818 (sv->state & SRV_RUNNING) ? (sv->fall) : (sv->rise));
3819
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3820 chunk_printf(&msg, sizeof(trash),
3821 /* weight */
3822 "</td><td>%d</td>"
3823 /* act, bck */
3824 "<td>%s</td><td>%s</td>"
3825 "",
Willy Tarreau417fae02007-03-25 21:16:40 +0200[diff] [blame]3826 sv->uweight,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3827 (sv->state & SRV_BACKUP) ? "-" : "Y",
3828 (sv->state & SRV_BACKUP) ? "Y" : "-");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3829
3830 /* check failures : unique, fatal */
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3831 if (sv->state & SRV_CHECKED)
3832 chunk_printf(&msg, sizeof(trash),
3833 "<td align=right>%d</td><td align=right>%d</td></tr>\n",
3834 sv->failed_checks, sv->down_trans);
3835 else
3836 chunk_printf(&msg, sizeof(trash),
3837 "<td colspan=2></td></tr>\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3838
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3839 if (buffer_write_chunk(rep, &msg) != 0)
3840 return 0;
3841
3842 s->data_ctx.stats.sv = sv->next;
3843 } /* while sv */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3844
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3845 s->data_ctx.stats.px_st = DATA_ST_PX_BE;
3846 /* fall through */
3847
3848 case DATA_ST_PX_BE:
3849 /* print the backend */
3850 if (px->cap & PR_CAP_BE) {
Willy Tarreau4b946c82007-07-25 00:28:06 +0200[diff] [blame]3851 int gcd = 1;
3852
Willy Tarreau5af3a692007-07-24 23:32:33 +0200[diff] [blame]3853 if (px->map_state & PR_MAP_RECALC)
3854 recalc_server_map(px);
3855
Willy Tarreau4b946c82007-07-25 00:28:06 +0200[diff] [blame]3856 /* The GCD which was computed causes the total effective
3857 * weight to appear lower than all weights. Let's
3858 * recompute it.
3859 */
3860 if (px->srv && px->srv->eweight)
3861 gcd = px->srv->uweight / px->srv->eweight;
3862
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3863 chunk_printf(&msg, sizeof(trash),
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3864 /* name */
3865 "<tr align=center class=\"backend\"><td>Backend</td>"
3866 /* queue : current, max */
3867 "<td align=right>%d</td><td align=right>%d</td>"
3868 /* sessions : current, max, limit, cumul. */
3869 "<td align=right>%d</td><td align=right>%d</td><td align=right>%d</td><td align=right>%d</td>"
3870 /* bytes : in, out */
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3871 "<td align=right>%lld</td><td align=right>%lld</td>"
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3872 /* denied: req, resp */
3873 "<td align=right>%d</td><td align=right>%d</td>"
3874 /* errors : request, connect, response */
3875 "<td align=right></td><td align=right>%d</td><td align=right>%d</td>\n"
3876 /* server status : reflect backend status (up/down) : we display UP
3877 * if the backend has known working servers or if it has no server at
3878 * all (eg: for stats). Tthen we display the total weight, number of
3879 * active and backups. */
3880 "<td align=center>%s</td><td align=center>%d</td>"
3881 "<td align=center>%d</td><td align=center>%d</td>"
3882 /* rest of server: nothing */
3883 "<td align=center colspan=2></td></tr>"
3884 "",
3885 px->nbpend /* or px->totpend ? */, px->nbpend_max,
3886 px->beconn, px->beconn_max, px->fullconn, px->cum_beconn,
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3887 px->bytes_in, px->bytes_out,
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3888 px->denied_req, px->denied_resp,
3889 px->failed_conns, px->failed_resp,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3890 (px->srv_map_sz > 0 || !px->srv) ? "UP" : "DOWN",
Willy Tarreau4b946c82007-07-25 00:28:06 +0200[diff] [blame]3891 px->srv_map_sz * gcd, px->srv_act, px->srv_bck);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3892
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3893 if (buffer_write_chunk(rep, &msg) != 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3894 return 0;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3895 }
3896
3897 s->data_ctx.stats.px_st = DATA_ST_PX_END;
3898 /* fall through */
3899
3900 case DATA_ST_PX_END:
3901 chunk_printf(&msg, sizeof(trash), "</table><p>\n");
3902
3903 if (buffer_write_chunk(rep, &msg) != 0)
3904 return 0;
3905
3906 s->data_ctx.stats.px_st = DATA_ST_PX_FIN;
3907 /* fall through */
3908
3909 case DATA_ST_PX_FIN:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3910 return 1;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3911
3912 default:
3913 /* unknown state, we should put an abort() here ! */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3914 return 1;
3915 }
3916}
3917
3918
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3919/* Iterate the same filter through all request headers.
3920 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3921 * Since it can manage the switch to another backend, it updates the per-proxy
3922 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3923 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3924int 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]3925{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3926 char term;
3927 char *cur_ptr, *cur_end, *cur_next;
3928 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3929 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3930 struct hdr_idx_elem *cur_hdr;
3931 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]3932
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3933 last_hdr = 0;
3934
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3935 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3936 old_idx = 0;
3937
3938 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3939 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3940 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3941 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3942 (exp->action == ACT_ALLOW ||
3943 exp->action == ACT_DENY ||
3944 exp->action == ACT_TARPIT))
3945 return 0;
3946
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3947 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3948 if (!cur_idx)
3949 break;
3950
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3951 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3952 cur_ptr = cur_next;
3953 cur_end = cur_ptr + cur_hdr->len;
3954 cur_next = cur_end + cur_hdr->cr + 1;
3955
3956 /* Now we have one header between cur_ptr and cur_end,
3957 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3958 */
3959
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3960 /* The annoying part is that pattern matching needs
3961 * that we modify the contents to null-terminate all
3962 * strings before testing them.
3963 */
3964
3965 term = *cur_end;
3966 *cur_end = '\0';
3967
3968 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3969 switch (exp->action) {
3970 case ACT_SETBE:
3971 /* It is not possible to jump a second time.
3972 * FIXME: should we return an HTTP/500 here so that
3973 * the admin knows there's a problem ?
3974 */
3975 if (t->be != t->fe)
3976 break;
3977
3978 /* Swithing Proxy */
3979 t->be = (struct proxy *) exp->replace;
3980
3981 /* right now, the backend switch is not too much complicated
3982 * because we have associated req_cap and rsp_cap to the
3983 * frontend, and the beconn will be updated later.
3984 */
3985
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3986 t->rep->rto = t->req->wto = t->be->srvtimeout;
3987 t->req->cto = t->be->contimeout;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3988 last_hdr = 1;
3989 break;
3990
3991 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3992 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3993 last_hdr = 1;
3994 break;
3995
3996 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3997 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3998 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3999 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4000 break;
4001
4002 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4003 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4004 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4005 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4006 break;
4007
4008 case ACT_REPLACE:
4009 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4010 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
4011 /* FIXME: if the user adds a newline in the replacement, the
4012 * index will not be recalculated for now, and the new line
4013 * will not be counted as a new header.
4014 */
4015
4016 cur_end += delta;
4017 cur_next += delta;
4018 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4019 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4020 break;
4021
4022 case ACT_REMOVE:
4023 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
4024 cur_next += delta;
4025
4026 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4027 txn->req.eoh += delta;
4028 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4029 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4030 cur_hdr->len = 0;
4031 cur_end = NULL; /* null-term has been rewritten */
4032 break;
4033
4034 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4035 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4036 if (cur_end)
4037 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4038
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4039 /* keep the link from this header to next one in case of later
4040 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4041 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4042 old_idx = cur_idx;
4043 }
4044 return 0;
4045}
4046
4047
4048/* Apply the filter to the request line.
4049 * Returns 0 if nothing has been done, 1 if the filter has been applied,
4050 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4051 * Since it can manage the switch to another backend, it updates the per-proxy
4052 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4053 */
4054int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
4055{
4056 char term;
4057 char *cur_ptr, *cur_end;
4058 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4059 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4060 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4061
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4062
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4063 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4064 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4065 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4066 (exp->action == ACT_ALLOW ||
4067 exp->action == ACT_DENY ||
4068 exp->action == ACT_TARPIT))
4069 return 0;
4070 else if (exp->action == ACT_REMOVE)
4071 return 0;
4072
4073 done = 0;
4074
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4075 cur_ptr = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4076 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4077
4078 /* Now we have the request line between cur_ptr and cur_end */
4079
4080 /* The annoying part is that pattern matching needs
4081 * that we modify the contents to null-terminate all
4082 * strings before testing them.
4083 */
4084
4085 term = *cur_end;
4086 *cur_end = '\0';
4087
4088 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4089 switch (exp->action) {
4090 case ACT_SETBE:
4091 /* It is not possible to jump a second time.
4092 * FIXME: should we return an HTTP/500 here so that
4093 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4094 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4095 if (t->be != t->fe)
4096 break;
4097
4098 /* Swithing Proxy */
4099 t->be = (struct proxy *) exp->replace;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4100
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4101 /* right now, the backend switch is not too much complicated
4102 * because we have associated req_cap and rsp_cap to the
4103 * frontend, and the beconn will be updated later.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4104 */
4105
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4106 t->rep->rto = t->req->wto = t->be->srvtimeout;
4107 t->req->cto = t->be->contimeout;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4108 done = 1;
4109 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4110
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4111 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4112 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4113 done = 1;
4114 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4115
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4116 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4117 txn->flags |= TX_CLDENY;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4118 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4119 done = 1;
4120 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4121
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4122 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4123 txn->flags |= TX_CLTARPIT;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4124 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4125 done = 1;
4126 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4127
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4128 case ACT_REPLACE:
4129 *cur_end = term; /* restore the string terminator */
4130 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4131 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
4132 /* FIXME: if the user adds a newline in the replacement, the
4133 * index will not be recalculated for now, and the new line
4134 * will not be counted as a new header.
4135 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4136
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4137 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4138 cur_end += delta;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4139
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4140 txn->req.sol = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4141 cur_end = (char *)http_parse_reqline(&txn->req, req->data,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4142 HTTP_MSG_RQMETH,
4143 cur_ptr, cur_end + 1,
4144 NULL, NULL);
4145 if (unlikely(!cur_end))
4146 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4147
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4148 /* we have a full request and we know that we have either a CR
4149 * or an LF at <ptr>.
4150 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4151 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
4152 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]4153 /* there is no point trying this regex on headers */
4154 return 1;
4155 }
4156 }
4157 *cur_end = term; /* restore the string terminator */
4158 return done;
4159}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]4160
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4161
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4162
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4163/*
4164 * Apply all the req filters <exp> to all headers in buffer <req> of session <t>.
4165 * 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]4166 * unparsable request. Since it can manage the switch to another backend, it
4167 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4168 */
4169int apply_filters_to_request(struct session *t, struct buffer *req, struct hdr_exp *exp)
4170{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4171 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4172 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4173 while (exp && !(txn->flags & (TX_CLDENY|TX_CLTARPIT))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4174 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4175
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4176 /*
4177 * The interleaving of transformations and verdicts
4178 * makes it difficult to decide to continue or stop
4179 * the evaluation.
4180 */
4181
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4182 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4183 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4184 exp->action == ACT_TARPIT || exp->action == ACT_PASS)) {
4185 exp = exp->next;
4186 continue;
4187 }
4188
4189 /* Apply the filter to the request line. */
4190 ret = apply_filter_to_req_line(t, req, exp);
4191 if (unlikely(ret < 0))
4192 return -1;
4193
4194 if (likely(ret == 0)) {
4195 /* The filter did not match the request, it can be
4196 * iterated through all headers.
4197 */
4198 apply_filter_to_req_headers(t, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4199 }
4200 exp = exp->next;
4201 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4202 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4203}
4204
4205
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4206
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4207/*
4208 * Manager client-side cookie
4209 */
4210void manage_client_side_cookies(struct session *t, struct buffer *req)
4211{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4212 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4213 char *p1, *p2, *p3, *p4;
4214 char *del_colon, *del_cookie, *colon;
4215 int app_cookies;
4216
4217 appsess *asession_temp = NULL;
4218 appsess local_asession;
4219
4220 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4221 int cur_idx, old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4222
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4223 if (t->be->cookie_name == NULL &&
4224 t->be->appsession_name == NULL &&
4225 t->be->capture_name == NULL)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4226 return;
4227
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4228 /* Iterate through the headers.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4229 * we start with the start line.
4230 */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]4231 old_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4232 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4233
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4234 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4235 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4236 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4237
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4238 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4239 cur_ptr = cur_next;
4240 cur_end = cur_ptr + cur_hdr->len;
4241 cur_next = cur_end + cur_hdr->cr + 1;
4242
4243 /* We have one full header between cur_ptr and cur_end, and the
4244 * next header starts at cur_next. We're only interested in
4245 * "Cookie:" headers.
4246 */
4247
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4248 val = http_header_match2(cur_ptr, cur_end, "Cookie", 6);
4249 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4250 old_idx = cur_idx;
4251 continue;
4252 }
4253
4254 /* Now look for cookies. Conforming to RFC2109, we have to support
4255 * attributes whose name begin with a '$', and associate them with
4256 * the right cookie, if we want to delete this cookie.
4257 * So there are 3 cases for each cookie read :
4258 * 1) it's a special attribute, beginning with a '$' : ignore it.
4259 * 2) it's a server id cookie that we *MAY* want to delete : save
4260 * some pointers on it (last semi-colon, beginning of cookie...)
4261 * 3) it's an application cookie : we *MAY* have to delete a previous
4262 * "special" cookie.
4263 * At the end of loop, if a "special" cookie remains, we may have to
4264 * remove it. If no application cookie persists in the header, we
4265 * *MUST* delete it
4266 */
4267
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4268 colon = p1 = cur_ptr + val; /* first non-space char after 'Cookie:' */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4269
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4270 /* del_cookie == NULL => nothing to be deleted */
4271 del_colon = del_cookie = NULL;
4272 app_cookies = 0;
4273
4274 while (p1 < cur_end) {
4275 /* skip spaces and colons, but keep an eye on these ones */
4276 while (p1 < cur_end) {
4277 if (*p1 == ';' || *p1 == ',')
4278 colon = p1;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4279 else if (!isspace((unsigned char)*p1))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4280 break;
4281 p1++;
4282 }
4283
4284 if (p1 == cur_end)
4285 break;
4286
4287 /* p1 is at the beginning of the cookie name */
4288 p2 = p1;
4289 while (p2 < cur_end && *p2 != '=')
4290 p2++;
4291
4292 if (p2 == cur_end)
4293 break;
4294
4295 p3 = p2 + 1; /* skips the '=' sign */
4296 if (p3 == cur_end)
4297 break;
4298
4299 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4300 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';' && *p4 != ',')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4301 p4++;
4302
4303 /* here, we have the cookie name between p1 and p2,
4304 * and its value between p3 and p4.
4305 * we can process it :
4306 *
4307 * Cookie: NAME=VALUE;
4308 * | || || |
4309 * | || || +--> p4
4310 * | || |+-------> p3
4311 * | || +--------> p2
4312 * | |+------------> p1
4313 * | +-------------> colon
4314 * +--------------------> cur_ptr
4315 */
4316
4317 if (*p1 == '$') {
4318 /* skip this one */
4319 }
4320 else {
4321 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4322 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4323 txn->cli_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4324 (p4 - p1 >= t->fe->capture_namelen) &&
4325 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4326 int log_len = p4 - p1;
4327
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]4328 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4329 Alert("HTTP logging : out of memory.\n");
4330 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4331 if (log_len > t->fe->capture_len)
4332 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4333 memcpy(txn->cli_cookie, p1, log_len);
4334 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4335 }
4336 }
4337
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4338 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4339 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4340 /* Cool... it's the right one */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4341 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4342 char *delim;
4343
4344 /* if we're in cookie prefix mode, we'll search the delimitor so that we
4345 * have the server ID betweek p3 and delim, and the original cookie between
4346 * delim+1 and p4. Otherwise, delim==p4 :
4347 *
4348 * Cookie: NAME=SRV~VALUE;
4349 * | || || | |
4350 * | || || | +--> p4
4351 * | || || +--------> delim
4352 * | || |+-----------> p3
4353 * | || +------------> p2
4354 * | |+----------------> p1
4355 * | +-----------------> colon
4356 * +------------------------> cur_ptr
4357 */
4358
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4359 if (t->be->options & PR_O_COOK_PFX) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4360 for (delim = p3; delim < p4; delim++)
4361 if (*delim == COOKIE_DELIM)
4362 break;
4363 }
4364 else
4365 delim = p4;
4366
4367
4368 /* Here, we'll look for the first running server which supports the cookie.
4369 * This allows to share a same cookie between several servers, for example
4370 * to dedicate backup servers to specific servers only.
4371 * However, to prevent clients from sticking to cookie-less backup server
4372 * when they have incidentely learned an empty cookie, we simply ignore
4373 * empty cookies and mark them as invalid.
4374 */
4375 if (delim == p3)
4376 srv = NULL;
4377
4378 while (srv) {
Willy Tarreau92f2ab12007-02-02 22:14:47 +0100[diff] [blame]4379 if (srv->cookie && (srv->cklen == delim - p3) &&
4380 !memcmp(p3, srv->cookie, delim - p3)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4381 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4382 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4383 txn->flags &= ~TX_CK_MASK;
4384 txn->flags |= TX_CK_VALID;
4385 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4386 t->srv = srv;
4387 break;
4388 } else {
4389 /* we found a server, but it's down */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4390 txn->flags &= ~TX_CK_MASK;
4391 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4392 }
4393 }
4394 srv = srv->next;
4395 }
4396
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4397 if (!srv && !(txn->flags & TX_CK_DOWN)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4398 /* no server matched this cookie */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4399 txn->flags &= ~TX_CK_MASK;
4400 txn->flags |= TX_CK_INVALID;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4401 }
4402
4403 /* depending on the cookie mode, we may have to either :
4404 * - delete the complete cookie if we're in insert+indirect mode, so that
4405 * the server never sees it ;
4406 * - remove the server id from the cookie value, and tag the cookie as an
4407 * application cookie so that it does not get accidentely removed later,
4408 * if we're in cookie prefix mode
4409 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4410 if ((t->be->options & PR_O_COOK_PFX) && (delim != p4)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4411 int delta; /* negative */
4412
4413 delta = buffer_replace2(req, p3, delim + 1, NULL, 0);
4414 p4 += delta;
4415 cur_end += delta;
4416 cur_next += delta;
4417 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4418 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4419
4420 del_cookie = del_colon = NULL;
4421 app_cookies++; /* protect the header from deletion */
4422 }
4423 else if (del_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4424 (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]4425 del_cookie = p1;
4426 del_colon = colon;
4427 }
4428 } else {
4429 /* now we know that we must keep this cookie since it's
4430 * not ours. But if we wanted to delete our cookie
4431 * earlier, we cannot remove the complete header, but we
4432 * can remove the previous block itself.
4433 */
4434 app_cookies++;
4435
4436 if (del_cookie != NULL) {
4437 int delta; /* negative */
4438
4439 delta = buffer_replace2(req, del_cookie, p1, NULL, 0);
4440 p4 += delta;
4441 cur_end += delta;
4442 cur_next += delta;
4443 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4444 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4445 del_cookie = del_colon = NULL;
4446 }
4447 }
4448
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4449 if ((t->be->appsession_name != NULL) &&
4450 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4451 /* first, let's see if the cookie is our appcookie*/
4452
4453 /* Cool... it's the right one */
4454
4455 asession_temp = &local_asession;
4456
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4457 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4458 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
4459 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
4460 return;
4461 }
4462
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4463 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4464 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4465 asession_temp->serverid = NULL;
4466
4467 /* only do insert, if lookup fails */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4468 if (chtbl_lookup(&(t->be->htbl_proxy), (void *) &asession_temp) != 0) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4469 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4470 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4471 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4472 Alert("Not enough memory process_cli():asession:calloc().\n");
4473 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4474 return;
4475 }
4476
4477 asession_temp->sessid = local_asession.sessid;
4478 asession_temp->serverid = local_asession.serverid;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4479 chtbl_insert(&(t->be->htbl_proxy), (void *) asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4480 } else {
4481 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4482 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4483 }
4484
4485 if (asession_temp->serverid == NULL) {
4486 Alert("Found Application Session without matching server.\n");
4487 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4488 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4489 while (srv) {
4490 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4491 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4492 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4493 txn->flags &= ~TX_CK_MASK;
4494 txn->flags |= TX_CK_VALID;
4495 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4496 t->srv = srv;
4497 break;
4498 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4499 txn->flags &= ~TX_CK_MASK;
4500 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4501 }
4502 }
4503 srv = srv->next;
4504 }/* end while(srv) */
4505 }/* end else if server == NULL */
4506
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]4507 tv_add(&asession_temp->expire, &now, &t->be->appsession_timeout);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4508 }/* end if ((t->proxy->appsession_name != NULL) ... */
4509 }
4510
4511 /* we'll have to look for another cookie ... */
4512 p1 = p4;
4513 } /* while (p1 < cur_end) */
4514
4515 /* There's no more cookie on this line.
4516 * We may have marked the last one(s) for deletion.
4517 * We must do this now in two ways :
4518 * - if there is no app cookie, we simply delete the header ;
4519 * - if there are app cookies, we must delete the end of the
4520 * string properly, including the colon/semi-colon before
4521 * the cookie name.
4522 */
4523 if (del_cookie != NULL) {
4524 int delta;
4525 if (app_cookies) {
4526 delta = buffer_replace2(req, del_colon, cur_end, NULL, 0);
4527 cur_end = del_colon;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4528 cur_hdr->len += delta;
4529 } else {
4530 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4531
4532 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4533 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4534 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4535 cur_hdr->len = 0;
4536 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]4537 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4538 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4539 }
4540
4541 /* keep the link from this header to next one */
4542 old_idx = cur_idx;
4543 } /* end of cookie processing on this header */
4544}
4545
4546
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4547/* Iterate the same filter through all response headers contained in <rtr>.
4548 * Returns 1 if this filter can be stopped upon return, otherwise 0.
4549 */
4550int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4551{
4552 char term;
4553 char *cur_ptr, *cur_end, *cur_next;
4554 int cur_idx, old_idx, last_hdr;
4555 struct http_txn *txn = &t->txn;
4556 struct hdr_idx_elem *cur_hdr;
4557 int len, delta;
4558
4559 last_hdr = 0;
4560
4561 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4562 old_idx = 0;
4563
4564 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4565 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4566 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4567 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4568 (exp->action == ACT_ALLOW ||
4569 exp->action == ACT_DENY))
4570 return 0;
4571
4572 cur_idx = txn->hdr_idx.v[old_idx].next;
4573 if (!cur_idx)
4574 break;
4575
4576 cur_hdr = &txn->hdr_idx.v[cur_idx];
4577 cur_ptr = cur_next;
4578 cur_end = cur_ptr + cur_hdr->len;
4579 cur_next = cur_end + cur_hdr->cr + 1;
4580
4581 /* Now we have one header between cur_ptr and cur_end,
4582 * and the next header starts at cur_next.
4583 */
4584
4585 /* The annoying part is that pattern matching needs
4586 * that we modify the contents to null-terminate all
4587 * strings before testing them.
4588 */
4589
4590 term = *cur_end;
4591 *cur_end = '\0';
4592
4593 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4594 switch (exp->action) {
4595 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4596 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4597 last_hdr = 1;
4598 break;
4599
4600 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4601 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4602 last_hdr = 1;
4603 break;
4604
4605 case ACT_REPLACE:
4606 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4607 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4608 /* FIXME: if the user adds a newline in the replacement, the
4609 * index will not be recalculated for now, and the new line
4610 * will not be counted as a new header.
4611 */
4612
4613 cur_end += delta;
4614 cur_next += delta;
4615 cur_hdr->len += delta;
4616 txn->rsp.eoh += delta;
4617 break;
4618
4619 case ACT_REMOVE:
4620 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4621 cur_next += delta;
4622
4623 /* FIXME: this should be a separate function */
4624 txn->rsp.eoh += delta;
4625 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4626 txn->hdr_idx.used--;
4627 cur_hdr->len = 0;
4628 cur_end = NULL; /* null-term has been rewritten */
4629 break;
4630
4631 }
4632 }
4633 if (cur_end)
4634 *cur_end = term; /* restore the string terminator */
4635
4636 /* keep the link from this header to next one in case of later
4637 * removal of next header.
4638 */
4639 old_idx = cur_idx;
4640 }
4641 return 0;
4642}
4643
4644
4645/* Apply the filter to the status line in the response buffer <rtr>.
4646 * Returns 0 if nothing has been done, 1 if the filter has been applied,
4647 * or -1 if a replacement resulted in an invalid status line.
4648 */
4649int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4650{
4651 char term;
4652 char *cur_ptr, *cur_end;
4653 int done;
4654 struct http_txn *txn = &t->txn;
4655 int len, delta;
4656
4657
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4658 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4659 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4660 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4661 (exp->action == ACT_ALLOW ||
4662 exp->action == ACT_DENY))
4663 return 0;
4664 else if (exp->action == ACT_REMOVE)
4665 return 0;
4666
4667 done = 0;
4668
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4669 cur_ptr = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4670 cur_end = cur_ptr + txn->rsp.sl.rq.l;
4671
4672 /* Now we have the status line between cur_ptr and cur_end */
4673
4674 /* The annoying part is that pattern matching needs
4675 * that we modify the contents to null-terminate all
4676 * strings before testing them.
4677 */
4678
4679 term = *cur_end;
4680 *cur_end = '\0';
4681
4682 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4683 switch (exp->action) {
4684 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4685 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4686 done = 1;
4687 break;
4688
4689 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4690 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4691 done = 1;
4692 break;
4693
4694 case ACT_REPLACE:
4695 *cur_end = term; /* restore the string terminator */
4696 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4697 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4698 /* FIXME: if the user adds a newline in the replacement, the
4699 * index will not be recalculated for now, and the new line
4700 * will not be counted as a new header.
4701 */
4702
4703 txn->rsp.eoh += delta;
4704 cur_end += delta;
4705
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4706 txn->rsp.sol = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4707 cur_end = (char *)http_parse_stsline(&txn->rsp, rtr->data,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]4708 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4709 cur_ptr, cur_end + 1,
4710 NULL, NULL);
4711 if (unlikely(!cur_end))
4712 return -1;
4713
4714 /* we have a full respnse and we know that we have either a CR
4715 * or an LF at <ptr>.
4716 */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4717 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]4718 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.rq.l, *cur_end == '\r');
4719 /* there is no point trying this regex on headers */
4720 return 1;
4721 }
4722 }
4723 *cur_end = term; /* restore the string terminator */
4724 return done;
4725}
4726
4727
4728
4729/*
4730 * Apply all the resp filters <exp> to all headers in buffer <rtr> of session <t>.
4731 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
4732 * unparsable response.
4733 */
4734int apply_filters_to_response(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4735{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4736 struct http_txn *txn = &t->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4737 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4738 while (exp && !(txn->flags & TX_SVDENY)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4739 int ret;
4740
4741 /*
4742 * The interleaving of transformations and verdicts
4743 * makes it difficult to decide to continue or stop
4744 * the evaluation.
4745 */
4746
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4747 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4748 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4749 exp->action == ACT_PASS)) {
4750 exp = exp->next;
4751 continue;
4752 }
4753
4754 /* Apply the filter to the status line. */
4755 ret = apply_filter_to_sts_line(t, rtr, exp);
4756 if (unlikely(ret < 0))
4757 return -1;
4758
4759 if (likely(ret == 0)) {
4760 /* The filter did not match the response, it can be
4761 * iterated through all headers.
4762 */
4763 apply_filter_to_resp_headers(t, rtr, exp);
4764 }
4765 exp = exp->next;
4766 }
4767 return 0;
4768}
4769
4770
4771
4772/*
4773 * Manager server-side cookies
4774 */
4775void manage_server_side_cookies(struct session *t, struct buffer *rtr)
4776{
4777 struct http_txn *txn = &t->txn;
4778 char *p1, *p2, *p3, *p4;
4779
4780 appsess *asession_temp = NULL;
4781 appsess local_asession;
4782
4783 char *cur_ptr, *cur_end, *cur_next;
4784 int cur_idx, old_idx, delta;
4785
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4786 if (t->be->cookie_name == NULL &&
4787 t->be->appsession_name == NULL &&
4788 t->be->capture_name == NULL &&
4789 !(t->be->options & PR_O_CHK_CACHE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4790 return;
4791
4792 /* Iterate through the headers.
4793 * we start with the start line.
4794 */
4795 old_idx = 0;
4796 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4797
4798 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
4799 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4800 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4801
4802 cur_hdr = &txn->hdr_idx.v[cur_idx];
4803 cur_ptr = cur_next;
4804 cur_end = cur_ptr + cur_hdr->len;
4805 cur_next = cur_end + cur_hdr->cr + 1;
4806
4807 /* We have one full header between cur_ptr and cur_end, and the
4808 * next header starts at cur_next. We're only interested in
4809 * "Cookie:" headers.
4810 */
4811
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4812 val = http_header_match2(cur_ptr, cur_end, "Set-Cookie", 10);
4813 if (!val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4814 old_idx = cur_idx;
4815 continue;
4816 }
4817
4818 /* OK, right now we know we have a set-cookie at cur_ptr */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4819 txn->flags |= TX_SCK_ANY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4820
4821
4822 /* maybe we only wanted to see if there was a set-cookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4823 if (t->be->cookie_name == NULL &&
4824 t->be->appsession_name == NULL &&
4825 t->be->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4826 return;
4827
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4828 p1 = cur_ptr + val; /* first non-space char after 'Set-Cookie:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4829
4830 while (p1 < cur_end) { /* in fact, we'll break after the first cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4831 if (p1 == cur_end || *p1 == ';') /* end of cookie */
4832 break;
4833
4834 /* p1 is at the beginning of the cookie name */
4835 p2 = p1;
4836
4837 while (p2 < cur_end && *p2 != '=' && *p2 != ';')
4838 p2++;
4839
4840 if (p2 == cur_end || *p2 == ';') /* next cookie */
4841 break;
4842
4843 p3 = p2 + 1; /* skip the '=' sign */
4844 if (p3 == cur_end)
4845 break;
4846
4847 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4848 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';')
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4849 p4++;
4850
4851 /* here, we have the cookie name between p1 and p2,
4852 * and its value between p3 and p4.
4853 * we can process it.
4854 */
4855
4856 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4857 if (t->be->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4858 txn->srv_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4859 (p4 - p1 >= t->be->capture_namelen) &&
4860 memcmp(p1, t->be->capture_name, t->be->capture_namelen) == 0) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4861 int log_len = p4 - p1;
4862
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]4863 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4864 Alert("HTTP logging : out of memory.\n");
4865 }
4866
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4867 if (log_len > t->be->capture_len)
4868 log_len = t->be->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4869 memcpy(txn->srv_cookie, p1, log_len);
4870 txn->srv_cookie[log_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4871 }
4872
4873 /* now check if we need to process it for persistence */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4874 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4875 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4876 /* Cool... it's the right one */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4877 txn->flags |= TX_SCK_SEEN;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4878
4879 /* If the cookie is in insert mode on a known server, we'll delete
4880 * this occurrence because we'll insert another one later.
4881 * We'll delete it too if the "indirect" option is set and we're in
4882 * a direct access. */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4883 if (((t->srv) && (t->be->options & PR_O_COOK_INS)) ||
4884 ((t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_IND))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4885 /* this header must be deleted */
4886 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4887 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4888 txn->hdr_idx.used--;
4889 cur_hdr->len = 0;
4890 cur_next += delta;
4891 txn->rsp.eoh += delta;
4892
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4893 txn->flags |= TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4894 }
4895 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4896 (t->be->options & PR_O_COOK_RW)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4897 /* replace bytes p3->p4 with the cookie name associated
4898 * with this server since we know it.
4899 */
4900 delta = buffer_replace2(rtr, p3, p4, t->srv->cookie, t->srv->cklen);
4901 cur_hdr->len += delta;
4902 cur_next += delta;
4903 txn->rsp.eoh += delta;
4904
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4905 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4906 }
4907 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4908 (t->be->options & PR_O_COOK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4909 /* insert the cookie name associated with this server
4910 * before existing cookie, and insert a delimitor between them..
4911 */
4912 delta = buffer_replace2(rtr, p3, p3, t->srv->cookie, t->srv->cklen + 1);
4913 cur_hdr->len += delta;
4914 cur_next += delta;
4915 txn->rsp.eoh += delta;
4916
4917 p3[t->srv->cklen] = COOKIE_DELIM;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4918 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4919 }
4920 }
4921 /* next, let's see if the cookie is our appcookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4922 else if ((t->be->appsession_name != NULL) &&
4923 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4924
4925 /* Cool... it's the right one */
4926
4927 size_t server_id_len = strlen(t->srv->id) + 1;
4928 asession_temp = &local_asession;
4929
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4930 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4931 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4932 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4933 return;
4934 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4935 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4936 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4937 asession_temp->serverid = NULL;
4938
4939 /* only do insert, if lookup fails */
4940 if (chtbl_lookup(&(t->be->htbl_proxy), (void *) &asession_temp) != 0) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4941 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4942 Alert("Not enough Memory process_srv():asession:calloc().\n");
4943 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
4944 return;
4945 }
4946 asession_temp->sessid = local_asession.sessid;
4947 asession_temp->serverid = local_asession.serverid;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4948 chtbl_insert(&(t->be->htbl_proxy), (void *) asession_temp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4949 }/* end if (chtbl_lookup()) */
4950 else {
4951 /* free wasted memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4952 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4953 } /* end else from if (chtbl_lookup()) */
4954
4955 if (asession_temp->serverid == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4956 if ((asession_temp->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4957 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4958 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4959 return;
4960 }
4961 asession_temp->serverid[0] = '\0';
4962 }
4963
4964 if (asession_temp->serverid[0] == '\0')
4965 memcpy(asession_temp->serverid, t->srv->id, server_id_len);
4966
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]4967 tv_add(&asession_temp->expire, &now, &t->be->appsession_timeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4968
4969#if defined(DEBUG_HASH)
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4970 print_table(&(t->be->htbl_proxy));
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4971#endif
4972 }/* end if ((t->proxy->appsession_name != NULL) ... */
4973 break; /* we don't want to loop again since there cannot be another cookie on the same line */
4974 } /* we're now at the end of the cookie value */
4975
4976 /* keep the link from this header to next one */
4977 old_idx = cur_idx;
4978 } /* end of cookie processing on this header */
4979}
4980
4981
4982
4983/*
4984 * Check if response is cacheable or not. Updates t->flags.
4985 */
4986void check_response_for_cacheability(struct session *t, struct buffer *rtr)
4987{
4988 struct http_txn *txn = &t->txn;
4989 char *p1, *p2;
4990
4991 char *cur_ptr, *cur_end, *cur_next;
4992 int cur_idx;
4993
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4994 if (!txn->flags & TX_CACHEABLE)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4995 return;
4996
4997 /* Iterate through the headers.
4998 * we start with the start line.
4999 */
5000 cur_idx = 0;
5001 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
5002
5003 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
5004 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5005 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5006
5007 cur_hdr = &txn->hdr_idx.v[cur_idx];
5008 cur_ptr = cur_next;
5009 cur_end = cur_ptr + cur_hdr->len;
5010 cur_next = cur_end + cur_hdr->cr + 1;
5011
5012 /* We have one full header between cur_ptr and cur_end, and the
5013 * next header starts at cur_next. We're only interested in
5014 * "Cookie:" headers.
5015 */
5016
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5017 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
5018 if (val) {
5019 if ((cur_end - (cur_ptr + val) >= 8) &&
5020 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
5021 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5022 return;
5023 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5024 }
5025
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5026 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
5027 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5028 continue;
5029
5030 /* OK, right now we know we have a cache-control header at cur_ptr */
5031
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5032 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5033
5034 if (p1 >= cur_end) /* no more info */
5035 continue;
5036
5037 /* p1 is at the beginning of the value */
5038 p2 = p1;
5039
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]5040 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5041 p2++;
5042
5043 /* we have a complete value between p1 and p2 */
5044 if (p2 < cur_end && *p2 == '=') {
5045 /* we have something of the form no-cache="set-cookie" */
5046 if ((cur_end - p1 >= 21) &&
5047 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
5048 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5049 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5050 continue;
5051 }
5052
5053 /* OK, so we know that either p2 points to the end of string or to a comma */
5054 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
5055 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
5056 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
5057 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5058 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5059 return;
5060 }
5061
5062 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5063 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5064 continue;
5065 }
5066 }
5067}
5068
5069
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5070/*
5071 * Try to retrieve a known appsession in the URI, then the associated server.
5072 * If the server is found, it's assigned to the session.
5073 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5074void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5075{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5076 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5077 appsess *asession_temp = NULL;
5078 appsess local_asession;
5079 char *request_line;
5080
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5081 if (t->be->appsession_name == NULL ||
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]5082 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST) ||
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5083 (request_line = memchr(begin, ';', len)) == NULL ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5084 ((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]5085 return;
5086
5087 /* skip ';' */
5088 request_line++;
5089
5090 /* look if we have a jsessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5091 if (strncasecmp(request_line, t->be->appsession_name, t->be->appsession_name_len) != 0)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5092 return;
5093
5094 /* skip jsessionid= */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5095 request_line += t->be->appsession_name_len + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5096
5097 /* First try if we already have an appsession */
5098 asession_temp = &local_asession;
5099
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5100 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5101 Alert("Not enough memory process_cli():asession_temp->sessid:calloc().\n");
5102 send_log(t->be, LOG_ALERT, "Not enough Memory process_cli():asession_temp->sessid:calloc().\n");
5103 return;
5104 }
5105
5106 /* Copy the sessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5107 memcpy(asession_temp->sessid, request_line, t->be->appsession_len);
5108 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5109 asession_temp->serverid = NULL;
5110
5111 /* only do insert, if lookup fails */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5112 if (chtbl_lookup(&(t->be->htbl_proxy), (void *)&asession_temp)) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5113 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5114 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5115 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5116 Alert("Not enough memory process_cli():asession:calloc().\n");
5117 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
5118 return;
5119 }
5120 asession_temp->sessid = local_asession.sessid;
5121 asession_temp->serverid = local_asession.serverid;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5122 chtbl_insert(&(t->be->htbl_proxy), (void *) asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5123 }
5124 else {
5125 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5126 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5127 }
5128
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]5129 tv_add(&asession_temp->expire, &now, &t->be->appsession_timeout);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5130 asession_temp->request_count++;
5131
5132#if defined(DEBUG_HASH)
5133 print_table(&(t->proxy->htbl_proxy));
5134#endif
5135 if (asession_temp->serverid == NULL) {
5136 Alert("Found Application Session without matching server.\n");
5137 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5138 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5139 while (srv) {
5140 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5141 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5142 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5143 txn->flags &= ~TX_CK_MASK;
5144 txn->flags |= TX_CK_VALID;
5145 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5146 t->srv = srv;
5147 break;
5148 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5149 txn->flags &= ~TX_CK_MASK;
5150 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5151 }
5152 }
5153 srv = srv->next;
5154 }
5155 }
5156}
5157
5158
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5159/*
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5160 * In a GET or HEAD request, check if the requested URI matches the stats uri
5161 * for the current backend, and if an authorization has been passed and is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5162 *
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5163 * 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]5164 * 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]5165 * produce_content() can be called to start sending data.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5166 *
5167 * Returns 1 if the session's state changes, otherwise 0.
5168 */
5169int stats_check_uri_auth(struct session *t, struct proxy *backend)
5170{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5171 struct http_txn *txn = &t->txn;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5172 struct uri_auth *uri_auth = backend->uri_auth;
5173 struct user_auth *user;
5174 int authenticated, cur_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5175 char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5176
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5177 /* check URI size */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5178 if (uri_auth->uri_len > txn->req.sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5179 return 0;
5180
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5181 h = t->req->data + txn->req.sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5182
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5183 /* the URI is in h */
5184 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5185 return 0;
5186
5187 /* we are in front of a interceptable URI. Let's check
5188 * if there's an authentication and if it's valid.
5189 */
5190 user = uri_auth->users;
5191 if (!user) {
5192 /* no user auth required, it's OK */
5193 authenticated = 1;
5194 } else {
5195 authenticated = 0;
5196
5197 /* a user list is defined, we have to check.
5198 * skip 21 chars for "Authorization: Basic ".
5199 */
5200
5201 /* FIXME: this should move to an earlier place */
5202 cur_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5203 h = t->req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
5204 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
5205 int len = txn->hdr_idx.v[cur_idx].len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5206 if (len > 14 &&
5207 !strncasecmp("Authorization:", h, 14)) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5208 txn->auth_hdr.str = h;
5209 txn->auth_hdr.len = len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5210 break;
5211 }
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5212 h += len + txn->hdr_idx.v[cur_idx].cr + 1;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5213 }
5214
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5215 if (txn->auth_hdr.len < 21 ||
5216 memcmp(txn->auth_hdr.str + 14, " Basic ", 7))
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5217 user = NULL;
5218
5219 while (user) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5220 if ((txn->auth_hdr.len == user->user_len + 14 + 7)
5221 && !memcmp(txn->auth_hdr.str + 14 + 7,
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5222 user->user_pwd, user->user_len)) {
5223 authenticated = 1;
5224 break;
5225 }
5226 user = user->next;
5227 }
5228 }
5229
5230 if (!authenticated) {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]5231 struct chunk msg;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5232
5233 /* no need to go further */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]5234 msg.str = trash;
5235 msg.len = sprintf(trash, HTTP_401_fmt, uri_auth->auth_realm);
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]5236 txn->status = 401;
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]5237 client_retnclose(t, &msg);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5238 if (!(t->flags & SN_ERR_MASK))
5239 t->flags |= SN_ERR_PRXCOND;
5240 if (!(t->flags & SN_FINST_MASK))
5241 t->flags |= SN_FINST_R;
5242 return 1;
5243 }
5244
5245 /* The request is valid, the user is authenticate. Let's start sending
5246 * data.
5247 */
5248 t->cli_state = CL_STSHUTR;
5249 t->req->rlim = t->req->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]5250 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5251 t->data_source = DATA_SRC_STATS;
5252 t->data_state = DATA_ST_INIT;
5253 produce_content(t);
5254 return 1;
5255}
5256
5257
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5258/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5259 * Print a debug line with a header
5260 */
5261void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
5262{
5263 int len, max;
5264 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
5265 dir, (unsigned short)t->cli_fd, (unsigned short)t->srv_fd);
5266 max = end - start;
5267 UBOUND(max, sizeof(trash) - len - 1);
5268 len += strlcpy2(trash + len, start, max + 1);
5269 trash[len++] = '\n';
5270 write(1, trash, len);
5271}
5272
5273
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5274/************************************************************************/
5275/* The code below is dedicated to ACL parsing and matching */
5276/************************************************************************/
5277
5278
5279
5280
5281/* 1. Check on METHOD
5282 * We use the pre-parsed method if it is known, and store its number as an
5283 * integer. If it is unknown, we use the pointer and the length.
5284 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5285static int acl_parse_meth(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5286{
5287 int len, meth;
5288
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5289 len = strlen(*text);
5290 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5291
5292 pattern->val.i = meth;
5293 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5294 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5295 if (!pattern->ptr.str)
5296 return 0;
5297 pattern->len = len;
5298 }
5299 return 1;
5300}
5301
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5302static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5303acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, int dir,
5304 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5305{
5306 int meth;
5307 struct http_txn *txn = l7;
5308
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5309 if (txn->req.msg_state != HTTP_MSG_BODY)
5310 return 0;
5311
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5312 meth = txn->meth;
5313 test->i = meth;
5314 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5315 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5316 /* ensure the indexes are not affected */
5317 return 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5318 test->len = txn->req.sl.rq.m_l;
5319 test->ptr = txn->req.sol;
5320 }
5321 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
5322 return 1;
5323}
5324
5325static int acl_match_meth(struct acl_test *test, struct acl_pattern *pattern)
5326{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]5327 int icase;
5328
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5329 if (test->i != pattern->val.i)
5330 return 0;
5331
5332 if (test->i != HTTP_METH_OTHER)
5333 return 1;
5334
5335 /* Other method, we must compare the strings */
5336 if (pattern->len != test->len)
5337 return 0;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]5338
5339 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
5340 if ((icase && strncasecmp(pattern->ptr.str, test->ptr, test->len) != 0) ||
5341 (!icase && strncmp(pattern->ptr.str, test->ptr, test->len) != 0))
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5342 return 0;
5343 return 1;
5344}
5345
5346/* 2. Check on Request/Status Version
5347 * We simply compare strings here.
5348 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5349static int acl_parse_ver(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5350{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5351 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5352 if (!pattern->ptr.str)
5353 return 0;
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5354 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5355 return 1;
5356}
5357
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5358static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5359acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, int dir,
5360 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5361{
5362 struct http_txn *txn = l7;
5363 char *ptr;
5364 int len;
5365
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5366 if (txn->req.msg_state != HTTP_MSG_BODY)
5367 return 0;
5368
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5369 len = txn->req.sl.rq.v_l;
5370 ptr = txn->req.sol + txn->req.sl.rq.v - txn->req.som;
5371
5372 while ((len-- > 0) && (*ptr++ != '/'));
5373 if (len <= 0)
5374 return 0;
5375
5376 test->ptr = ptr;
5377 test->len = len;
5378
5379 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
5380 return 1;
5381}
5382
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5383static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5384acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, int dir,
5385 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5386{
5387 struct http_txn *txn = l7;
5388 char *ptr;
5389 int len;
5390
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5391 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5392 return 0;
5393
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5394 len = txn->rsp.sl.st.v_l;
5395 ptr = txn->rsp.sol;
5396
5397 while ((len-- > 0) && (*ptr++ != '/'));
5398 if (len <= 0)
5399 return 0;
5400
5401 test->ptr = ptr;
5402 test->len = len;
5403
5404 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
5405 return 1;
5406}
5407
5408/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5409static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5410acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, int dir,
5411 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5412{
5413 struct http_txn *txn = l7;
5414 char *ptr;
5415 int len;
5416
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5417 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5418 return 0;
5419
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5420 len = txn->rsp.sl.st.c_l;
5421 ptr = txn->rsp.sol + txn->rsp.sl.st.c - txn->rsp.som;
5422
5423 test->i = __strl2ui(ptr, len);
5424 test->flags = ACL_TEST_F_VOL_1ST;
5425 return 1;
5426}
5427
5428/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5429static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5430acl_fetch_url(struct proxy *px, struct session *l4, void *l7, int dir,
5431 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5432{
5433 struct http_txn *txn = l7;
5434
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5435 if (txn->req.msg_state != HTTP_MSG_BODY)
5436 return 0;
5437 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5438 /* ensure the indexes are not affected */
5439 return 0;
5440
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5441 test->len = txn->req.sl.rq.u_l;
5442 test->ptr = txn->req.sol + txn->req.sl.rq.u;
5443
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]5444 /* we do not need to set READ_ONLY because the data is in a buffer */
5445 test->flags = ACL_TEST_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5446 return 1;
5447}
5448
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5449/* 5. Check on HTTP header. A pointer to the beginning of the value is returned.
5450 * This generic function is used by both acl_fetch_chdr() and acl_fetch_shdr().
5451 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5452static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5453acl_fetch_hdr(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5454 struct acl_expr *expr, struct acl_test *test)
5455{
5456 struct http_txn *txn = l7;
5457 struct hdr_idx *idx = &txn->hdr_idx;
5458 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5459
5460 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5461 /* search for header from the beginning */
5462 ctx->idx = 0;
5463
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5464 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5465 test->flags |= ACL_TEST_F_FETCH_MORE;
5466 test->flags |= ACL_TEST_F_VOL_HDR;
5467 test->len = ctx->vlen;
5468 test->ptr = (char *)ctx->line + ctx->val;
5469 return 1;
5470 }
5471
5472 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5473 test->flags |= ACL_TEST_F_VOL_HDR;
5474 return 0;
5475}
5476
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5477static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5478acl_fetch_chdr(struct proxy *px, struct session *l4, void *l7, int dir,
5479 struct acl_expr *expr, struct acl_test *test)
5480{
5481 struct http_txn *txn = l7;
5482
5483 if (txn->req.msg_state != HTTP_MSG_BODY)
5484 return 0;
5485 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5486 /* ensure the indexes are not affected */
5487 return 0;
5488
5489 return acl_fetch_hdr(px, l4, txn, txn->req.sol, expr, test);
5490}
5491
5492static int
5493acl_fetch_shdr(struct proxy *px, struct session *l4, void *l7, int dir,
5494 struct acl_expr *expr, struct acl_test *test)
5495{
5496 struct http_txn *txn = l7;
5497
5498 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5499 return 0;
5500
5501 return acl_fetch_hdr(px, l4, txn, txn->rsp.sol, expr, test);
5502}
5503
5504/* 6. Check on HTTP header count. The number of occurrences is returned.
5505 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
5506 */
5507static int
5508acl_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5509 struct acl_expr *expr, struct acl_test *test)
5510{
5511 struct http_txn *txn = l7;
5512 struct hdr_idx *idx = &txn->hdr_idx;
5513 struct hdr_ctx ctx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5514 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5515
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5516 ctx.idx = 0;
5517 cnt = 0;
5518 while (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, &ctx))
5519 cnt++;
5520
5521 test->i = cnt;
5522 test->flags = ACL_TEST_F_VOL_HDR;
5523 return 1;
5524}
5525
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5526static int
5527acl_fetch_chdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5528 struct acl_expr *expr, struct acl_test *test)
5529{
5530 struct http_txn *txn = l7;
5531
5532 if (txn->req.msg_state != HTTP_MSG_BODY)
5533 return 0;
5534 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5535 /* ensure the indexes are not affected */
5536 return 0;
5537
5538 return acl_fetch_hdr_cnt(px, l4, txn, txn->req.sol, expr, test);
5539}
5540
5541static int
5542acl_fetch_shdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5543 struct acl_expr *expr, struct acl_test *test)
5544{
5545 struct http_txn *txn = l7;
5546
5547 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5548 return 0;
5549
5550 return acl_fetch_hdr_cnt(px, l4, txn, txn->rsp.sol, expr, test);
5551}
5552
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5553/* 7. Check on HTTP header's integer value. The integer value is returned.
5554 * FIXME: the type is 'int', it may not be appropriate for everything.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5555 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5556 */
5557static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5558acl_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5559 struct acl_expr *expr, struct acl_test *test)
5560{
5561 struct http_txn *txn = l7;
5562 struct hdr_idx *idx = &txn->hdr_idx;
5563 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5564
5565 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5566 /* search for header from the beginning */
5567 ctx->idx = 0;
5568
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5569 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5570 test->flags |= ACL_TEST_F_FETCH_MORE;
5571 test->flags |= ACL_TEST_F_VOL_HDR;
5572 test->i = strl2ic((char *)ctx->line + ctx->val, ctx->vlen);
5573 return 1;
5574 }
5575
5576 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5577 test->flags |= ACL_TEST_F_VOL_HDR;
5578 return 0;
5579}
5580
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5581static int
5582acl_fetch_chdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5583 struct acl_expr *expr, struct acl_test *test)
5584{
5585 struct http_txn *txn = l7;
5586
5587 if (txn->req.msg_state != HTTP_MSG_BODY)
5588 return 0;
5589 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5590 /* ensure the indexes are not affected */
5591 return 0;
5592
5593 return acl_fetch_hdr_val(px, l4, txn, txn->req.sol, expr, test);
5594}
5595
5596static int
5597acl_fetch_shdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5598 struct acl_expr *expr, struct acl_test *test)
5599{
5600 struct http_txn *txn = l7;
5601
5602 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5603 return 0;
5604
5605 return acl_fetch_hdr_val(px, l4, txn, txn->rsp.sol, expr, test);
5606}
5607
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5608/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
5609 * the first '/' after the possible hostname, and ends before the possible '?'.
5610 */
5611static int
5612acl_fetch_path(struct proxy *px, struct session *l4, void *l7, int dir,
5613 struct acl_expr *expr, struct acl_test *test)
5614{
5615 struct http_txn *txn = l7;
5616 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5617
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5618 if (txn->req.msg_state != HTTP_MSG_BODY)
5619 return 0;
5620 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5621 /* ensure the indexes are not affected */
5622 return 0;
5623
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5624 ptr = txn->req.sol + txn->req.sl.rq.u;
5625 end = ptr + txn->req.sl.rq.u_l;
5626
5627 if (ptr >= end)
5628 return 0;
5629
5630 /* RFC2616, par. 5.1.2 :
5631 * Request-URI = "*" | absuri | abspath | authority
5632 */
5633
5634 if (*ptr == '*')
5635 return 0;
5636
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]5637 if (isalpha((unsigned char)*ptr)) {
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5638 /* this is a scheme as described by RFC3986, par. 3.1 */
5639 ptr++;
5640 while (ptr < end &&
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]5641 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5642 ptr++;
5643 /* skip '://' */
5644 if (ptr == end || *ptr++ != ':')
5645 return 0;
5646 if (ptr == end || *ptr++ != '/')
5647 return 0;
5648 if (ptr == end || *ptr++ != '/')
5649 return 0;
5650 }
5651 /* skip [user[:passwd]@]host[:[port]] */
5652
5653 while (ptr < end && *ptr != '/')
5654 ptr++;
5655
5656 if (ptr == end)
5657 return 0;
5658
5659 /* OK, we got the '/' ! */
5660 test->ptr = ptr;
5661
5662 while (ptr < end && *ptr != '?')
5663 ptr++;
5664
5665 test->len = ptr - test->ptr;
5666
5667 /* we do not need to set READ_ONLY because the data is in a buffer */
5668 test->flags = ACL_TEST_F_VOL_1ST;
5669 return 1;
5670}
5671
5672
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5673
5674/************************************************************************/
5675/* All supported keywords must be declared here. */
5676/************************************************************************/
5677
5678/* Note: must not be declared <const> as its list will be overwritten */
5679static struct acl_kw_list acl_kws = {{ },{
5680 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth },
5681 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str },
5682 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str },
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5683 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5684
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5685 { "url", acl_parse_str, acl_fetch_url, acl_match_str },
5686 { "url_beg", acl_parse_str, acl_fetch_url, acl_match_beg },
5687 { "url_end", acl_parse_str, acl_fetch_url, acl_match_end },
5688 { "url_sub", acl_parse_str, acl_fetch_url, acl_match_sub },
5689 { "url_dir", acl_parse_str, acl_fetch_url, acl_match_dir },
5690 { "url_dom", acl_parse_str, acl_fetch_url, acl_match_dom },
5691 { "url_reg", acl_parse_reg, acl_fetch_url, acl_match_reg },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5692
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5693 { "hdr", acl_parse_str, acl_fetch_chdr, acl_match_str },
5694 { "hdr_reg", acl_parse_reg, acl_fetch_chdr, acl_match_reg },
5695 { "hdr_beg", acl_parse_str, acl_fetch_chdr, acl_match_beg },
5696 { "hdr_end", acl_parse_str, acl_fetch_chdr, acl_match_end },
5697 { "hdr_sub", acl_parse_str, acl_fetch_chdr, acl_match_sub },
5698 { "hdr_dir", acl_parse_str, acl_fetch_chdr, acl_match_dir },
5699 { "hdr_dom", acl_parse_str, acl_fetch_chdr, acl_match_dom },
5700 { "hdr_cnt", acl_parse_int, acl_fetch_chdr_cnt,acl_match_int },
5701 { "hdr_val", acl_parse_int, acl_fetch_chdr_val,acl_match_int },
5702
5703 { "shdr", acl_parse_str, acl_fetch_shdr, acl_match_str },
5704 { "shdr_reg", acl_parse_reg, acl_fetch_shdr, acl_match_reg },
5705 { "shdr_beg", acl_parse_str, acl_fetch_shdr, acl_match_beg },
5706 { "shdr_end", acl_parse_str, acl_fetch_shdr, acl_match_end },
5707 { "shdr_sub", acl_parse_str, acl_fetch_shdr, acl_match_sub },
5708 { "shdr_dir", acl_parse_str, acl_fetch_shdr, acl_match_dir },
5709 { "shdr_dom", acl_parse_str, acl_fetch_shdr, acl_match_dom },
5710 { "shdr_cnt", acl_parse_int, acl_fetch_shdr_cnt,acl_match_int },
5711 { "shdr_val", acl_parse_int, acl_fetch_shdr_val,acl_match_int },
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5712
5713 { "path", acl_parse_str, acl_fetch_path, acl_match_str },
5714 { "path_reg", acl_parse_reg, acl_fetch_path, acl_match_reg },
5715 { "path_beg", acl_parse_str, acl_fetch_path, acl_match_beg },
5716 { "path_end", acl_parse_str, acl_fetch_path, acl_match_end },
5717 { "path_sub", acl_parse_str, acl_fetch_path, acl_match_sub },
5718 { "path_dir", acl_parse_str, acl_fetch_path, acl_match_dir },
5719 { "path_dom", acl_parse_str, acl_fetch_path, acl_match_dom },
5720
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]5721 { NULL, NULL, NULL, NULL },
5722
5723#if 0
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5724 { "line", acl_parse_str, acl_fetch_line, acl_match_str },
5725 { "line_reg", acl_parse_reg, acl_fetch_line, acl_match_reg },
5726 { "line_beg", acl_parse_str, acl_fetch_line, acl_match_beg },
5727 { "line_end", acl_parse_str, acl_fetch_line, acl_match_end },
5728 { "line_sub", acl_parse_str, acl_fetch_line, acl_match_sub },
5729 { "line_dir", acl_parse_str, acl_fetch_line, acl_match_dir },
5730 { "line_dom", acl_parse_str, acl_fetch_line, acl_match_dom },
5731
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5732 { "cook", acl_parse_str, acl_fetch_cook, acl_match_str },
5733 { "cook_reg", acl_parse_reg, acl_fetch_cook, acl_match_reg },
5734 { "cook_beg", acl_parse_str, acl_fetch_cook, acl_match_beg },
5735 { "cook_end", acl_parse_str, acl_fetch_cook, acl_match_end },
5736 { "cook_sub", acl_parse_str, acl_fetch_cook, acl_match_sub },
5737 { "cook_dir", acl_parse_str, acl_fetch_cook, acl_match_dir },
5738 { "cook_dom", acl_parse_str, acl_fetch_cook, acl_match_dom },
5739 { "cook_pst", acl_parse_none, acl_fetch_cook, acl_match_pst },
5740
5741 { "auth_user", acl_parse_str, acl_fetch_user, acl_match_str },
5742 { "auth_regex", acl_parse_reg, acl_fetch_user, acl_match_reg },
5743 { "auth_clear", acl_parse_str, acl_fetch_auth, acl_match_str },
5744 { "auth_md5", acl_parse_str, acl_fetch_auth, acl_match_md5 },
5745 { NULL, NULL, NULL, NULL },
5746#endif
5747}};
5748
5749
5750__attribute__((constructor))
5751static void __http_protocol_init(void)
5752{
5753 acl_register_keywords(&acl_kws);
5754}
5755
5756
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5757/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5758 * Local variables:
5759 * c-indent-level: 8
5760 * c-basic-offset: 8
5761 * End:
5762 */