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git01.mediatek.com / haproxy / 33a89a28035c49804983620da4b3982f82845555 / . / src / proto_http.c
blob: 6d71dcd8f5cf6ac00246fcb477da3a2d6fe1d377 [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"
Willy Tarreaubbd42122007-07-25 07:26:38 +0200[diff] [blame]3454 "Content-Type: text/html\r\n");
3455
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]3456 if (s->be->uri_auth->refresh > 0 && !(s->flags & SN_STAT_NORFRSH))
Willy Tarreaubbd42122007-07-25 07:26:38 +0200[diff] [blame]3457 chunk_printf(&msg, sizeof(trash), "Refresh: %d\r\n",
3458 s->be->uri_auth->refresh);
3459
3460 chunk_printf(&msg, sizeof(trash), "\r\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3461
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3462 s->txn.status = 200;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3463 client_retnclose(s, &msg); // send the start of the response.
3464 msg.len = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3465
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3466 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
3467 s->flags |= SN_ERR_PRXCOND; // to mark that it comes from the proxy
3468 if (!(s->flags & SN_FINST_MASK))
3469 s->flags |= SN_FINST_R;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3470
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]3471 if (s->txn.meth == HTTP_METH_HEAD) {
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]3472 /* that's all we return in case of HEAD request */
3473 s->data_state = DATA_ST_FIN;
3474 s->flags &= ~SN_SELF_GEN;
3475 return 1;
3476 }
3477
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3478 s->data_state = DATA_ST_HEAD; /* let's start producing data */
3479 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3480
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3481 case DATA_ST_HEAD:
3482 /* WARNING! This must fit in the first buffer !!! */
3483 chunk_printf(&msg, sizeof(trash),
3484 "<html><head><title>Statistics Report for " PRODUCT_NAME "</title>\n"
3485 "<meta http-equiv=\"content-type\" content=\"text/html; charset=iso-8859-1\">\n"
3486 "<style type=\"text/css\"><!--\n"
3487 "body {"
3488 " font-family: helvetica, arial;"
3489 " font-size: 12px;"
3490 " font-weight: normal;"
3491 " color: black;"
3492 " background: white;"
3493 "}\n"
3494 "th,td {"
3495 " font-size: 0.8em;"
3496 " align: center;"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3497 "}\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3498 "h1 {"
3499 " font-size: xx-large;"
3500 " margin-bottom: 0.5em;"
3501 "}\n"
3502 "h2 {"
3503 " font-family: helvetica, arial;"
3504 " font-size: x-large;"
3505 " font-weight: bold;"
3506 " font-style: italic;"
3507 " color: #6020a0;"
3508 " margin-top: 0em;"
3509 " margin-bottom: 0em;"
3510 "}\n"
3511 "h3 {"
3512 " font-family: helvetica, arial;"
3513 " font-size: 16px;"
3514 " font-weight: bold;"
3515 " color: #b00040;"
3516 " background: #e8e8d0;"
3517 " margin-top: 0em;"
3518 " margin-bottom: 0em;"
3519 "}\n"
3520 "li {"
3521 " margin-top: 0.25em;"
3522 " margin-right: 2em;"
3523 "}\n"
3524 ".hr {margin-top: 0.25em;"
3525 " border-color: black;"
3526 " border-bottom-style: solid;"
3527 "}\n"
3528 ".pxname {background: #b00040;color: #ffff40;font-weight: bold;}\n"
3529 ".titre {background: #20D0D0;color: #000000;font-weight: bold;}\n"
3530 ".total {background: #20D0D0;color: #ffff80;}\n"
3531 ".frontend {background: #e8e8d0;}\n"
3532 ".backend {background: #e8e8d0;}\n"
3533 ".active0 {background: #ff9090;}\n"
3534 ".active1 {background: #ffd020;}\n"
3535 ".active2 {background: #ffffa0;}\n"
3536 ".active3 {background: #c0ffc0;}\n"
3537 ".active4 {background: #e0e0e0;}\n"
3538 ".backup0 {background: #ff9090;}\n"
3539 ".backup1 {background: #ff80ff;}\n"
3540 ".backup2 {background: #c060ff;}\n"
3541 ".backup3 {background: #b0d0ff;}\n"
3542 ".backup4 {background: #e0e0e0;}\n"
3543 "table.tbl { border-collapse: collapse; border-style: none;}\n"
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3544 "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]3545 "table.tbl th { border-width: 1px; border-style: solid solid solid solid; border-color: gray;}\n"
3546 "table.tbl th.empty { border-style: none; empty-cells: hide;}\n"
3547 "table.lgd { border-collapse: collapse; border-width: 1px; border-style: none none none solid; border-color: black;}\n"
3548 "table.lgd td { border-width: 1px; border-style: solid solid solid solid; border-color: gray; padding: 2px;}\n"
3549 "table.lgd td.noborder { border-style: none; padding: 2px; white-space: nowrap;}\n"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3550 "-->\n"
3551 "</style></head>\n");
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3552
3553 if (buffer_write_chunk(rep, &msg) != 0)
3554 return 0;
3555
3556 s->data_state = DATA_ST_INFO;
3557 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3558
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3559 case DATA_ST_INFO:
3560 up = (now.tv_sec - start_date.tv_sec);
3561
3562 /* WARNING! this has to fit the first packet too.
3563 * We are around 3.5 kB, add adding entries will
3564 * become tricky if we want to support 4kB buffers !
3565 */
3566 chunk_printf(&msg, sizeof(trash),
3567 "<body><h1><a href=\"" PRODUCT_URL "\" style=\"text-decoration: none;\">"
3568 PRODUCT_NAME "</a></h1>\n"
3569 "<h2>Statistics Report for pid %d</h2>\n"
3570 "<hr width=\"100%%\" class=\"hr\">\n"
3571 "<h3>&gt; General process information</h3>\n"
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]3572 "<table border=0 cols=4><tr><td align=\"left\" nowrap width=\"1%%\">\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3573 "<p><b>pid = </b> %d (nbproc = %d)<br>\n"
3574 "<b>uptime = </b> %dd %dh%02dm%02ds<br>\n"
3575 "<b>system limits :</b> memmax = %s%s ; ulimit-n = %d<br>\n"
3576 "<b>maxsock = </b> %d<br>\n"
3577 "<b>maxconn = </b> %d (current conns = %d)<br>\n"
3578 "</td><td align=\"center\" nowrap>\n"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3579 "<table class=\"lgd\"><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3580 "<td class=\"active3\">&nbsp;</td><td class=\"noborder\">active UP </td>"
3581 "<td class=\"backup3\">&nbsp;</td><td class=\"noborder\">backup UP </td>"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3582 "</tr><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3583 "<td class=\"active2\"></td><td class=\"noborder\">active UP, going down </td>"
3584 "<td class=\"backup2\"></td><td class=\"noborder\">backup UP, going down </td>"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3585 "</tr><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3586 "<td class=\"active1\"></td><td class=\"noborder\">active DOWN, going up </td>"
3587 "<td class=\"backup1\"></td><td class=\"noborder\">backup DOWN, going up </td>"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3588 "</tr><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3589 "<td class=\"active0\"></td><td class=\"noborder\">active or backup DOWN &nbsp;</td>"
3590 "<td class=\"active4\"></td><td class=\"noborder\">not checked </td>"
3591 "</tr></table>\n"
3592 "</td>"
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]3593 "<td align=\"left\" valign=\"top\" nowrap width=\"1%%\">"
3594 "<b>Display option:</b><ul style=\"margin-top: 0.25em;\">"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3595 "",
3596 pid, pid, global.nbproc,
3597 up / 86400, (up % 86400) / 3600,
3598 (up % 3600) / 60, (up % 60),
3599 global.rlimit_memmax ? ultoa(global.rlimit_memmax) : "unlimited",
3600 global.rlimit_memmax ? " MB" : "",
3601 global.rlimit_nofile,
3602 global.maxsock,
3603 global.maxconn,
3604 actconn
3605 );
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3606
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]3607 if (s->flags & SN_STAT_HIDEDWN)
3608 chunk_printf(&msg, sizeof(trash),
3609 "<li><a href=\"%s%s%s\">Show all servers</a><br>\n",
3610 s->be->uri_auth->uri_prefix,
3611 "",
3612 (s->flags & SN_STAT_NORFRSH) ? ";norefresh" : "");
3613 else
3614 chunk_printf(&msg, sizeof(trash),
3615 "<li><a href=\"%s%s%s\">Hide 'DOWN' servers</a><br>\n",
3616 s->be->uri_auth->uri_prefix,
3617 ";up",
3618 (s->flags & SN_STAT_NORFRSH) ? ";norefresh" : "");
3619
3620 if (s->be->uri_auth->refresh > 0) {
3621 if (s->flags & SN_STAT_NORFRSH)
3622 chunk_printf(&msg, sizeof(trash),
3623 "<li><a href=\"%s%s%s\">Enable refresh</a><br>\n",
3624 s->be->uri_auth->uri_prefix,
3625 (s->flags & SN_STAT_HIDEDWN) ? ";up" : "",
3626 "");
3627 else
3628 chunk_printf(&msg, sizeof(trash),
3629 "<li><a href=\"%s%s%s\">Disable refresh</a><br>\n",
3630 s->be->uri_auth->uri_prefix,
3631 (s->flags & SN_STAT_HIDEDWN) ? ";up" : "",
3632 ";norefresh");
3633 }
3634
3635 chunk_printf(&msg, sizeof(trash),
3636 "<li><a href=\"%s%s%s\">Refresh now</a><br>\n",
3637 s->be->uri_auth->uri_prefix,
3638 (s->flags & SN_STAT_HIDEDWN) ? ";up" : "",
3639 (s->flags & SN_STAT_NORFRSH) ? ";norefresh" : "");
3640
3641 chunk_printf(&msg, sizeof(trash),
3642 "</td>"
3643 "<td align=\"left\" valign=\"top\" nowrap width=\"1%%\">"
3644 "<b>External ressources:</b><ul style=\"margin-top: 0.25em;\">\n"
3645 "<li><a href=\"" PRODUCT_URL "\">Primary site</a><br>\n"
3646 "<li><a href=\"" PRODUCT_URL_UPD "\">Updates (v" PRODUCT_BRANCH ")</a><br>\n"
3647 "<li><a href=\"" PRODUCT_URL_DOC "\">Online manual</a><br>\n"
3648 "</ul>"
3649 "</td>"
3650 "</tr></table>\n"
3651 ""
3652 );
3653
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3654 if (buffer_write_chunk(rep, &msg) != 0)
3655 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3656
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3657 memset(&s->data_ctx, 0, sizeof(s->data_ctx));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3658
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3659 s->data_ctx.stats.px = proxy;
3660 s->data_ctx.stats.px_st = DATA_ST_PX_INIT;
3661 s->data_state = DATA_ST_LIST;
3662 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3663
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3664 case DATA_ST_LIST:
3665 /* dump proxies */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3666 while (s->data_ctx.stats.px) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3667 px = s->data_ctx.stats.px;
3668 /* skip the disabled proxies and non-networked ones */
3669 if (px->state != PR_STSTOPPED && (px->cap & (PR_CAP_FE | PR_CAP_BE)))
3670 if (produce_content_stats_proxy(s, px) == 0)
3671 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3672
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3673 s->data_ctx.stats.px = px->next;
3674 s->data_ctx.stats.px_st = DATA_ST_PX_INIT;
3675 }
3676 /* here, we just have reached the last proxy */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3677
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3678 s->data_state = DATA_ST_END;
3679 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3680
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3681 case DATA_ST_END:
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]3682 chunk_printf(&msg, sizeof(trash), "</body></html>\n");
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3683 if (buffer_write_chunk(rep, &msg) != 0)
3684 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3685
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3686 s->data_state = DATA_ST_FIN;
3687 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3688
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3689 case DATA_ST_FIN:
3690 s->flags &= ~SN_SELF_GEN;
3691 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3692
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3693 default:
3694 /* unknown state ! */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3695 s->txn.status = 500;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3696 client_retnclose(s, error_message(s, HTTP_ERR_500));
3697 if (!(s->flags & SN_ERR_MASK))
3698 s->flags |= SN_ERR_PRXCOND;
3699 if (!(s->flags & SN_FINST_MASK))
3700 s->flags |= SN_FINST_R;
3701 s->flags &= ~SN_SELF_GEN;
3702 return 1;
3703 }
3704}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3705
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3706
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3707/*
3708 * Dumps statistics for a proxy.
3709 * Returns 0 if it had to stop dumping data because of lack of buffer space,
3710 * ot non-zero if everything completed.
3711 */
3712int produce_content_stats_proxy(struct session *s, struct proxy *px)
3713{
3714 struct buffer *rep = s->rep;
3715 struct server *sv;
3716 struct chunk msg;
3717
3718 msg.len = 0;
3719 msg.str = trash;
3720
3721 switch (s->data_ctx.stats.px_st) {
3722 case DATA_ST_PX_INIT:
3723 /* we are on a new proxy */
3724
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3725 if (s->be->uri_auth && s->be->uri_auth->scope) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3726 /* we have a limited scope, we have to check the proxy name */
3727 struct stat_scope *scope;
3728 int len;
3729
3730 len = strlen(px->id);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3731 scope = s->be->uri_auth->scope;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3732
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3733 while (scope) {
3734 /* match exact proxy name */
3735 if (scope->px_len == len && !memcmp(px->id, scope->px_id, len))
3736 break;
3737
3738 /* match '.' which means 'self' proxy */
3739 if (!strcmp(scope->px_id, ".") && px == s->fe)
3740 break;
3741 scope = scope->next;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3742 }
3743
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3744 /* proxy name not found : don't dump anything */
3745 if (scope == NULL)
3746 return 1;
3747 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3748
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3749 s->data_ctx.stats.px_st = DATA_ST_PX_TH;
3750 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3751
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3752 case DATA_ST_PX_TH:
3753 /* print a new table */
3754 chunk_printf(&msg, sizeof(trash),
3755 "<table cols=\"20\" class=\"tbl\" width=\"100%%\">\n"
3756 "<tr align=\"center\" class=\"titre\">"
3757 "<th colspan=2 class=\"pxname\">%s</th>"
3758 "<th colspan=18 class=\"empty\"></th>"
3759 "</tr>\n"
3760 "<tr align=\"center\" class=\"titre\">"
3761 "<th rowspan=2></th>"
3762 "<th colspan=2>Queue</th><th colspan=4>Sessions</th>"
3763 "<th colspan=2>Bytes</th><th colspan=2>Denied</th>"
3764 "<th colspan=3>Errors</th><th colspan=6>Server</th>"
3765 "</tr>\n"
3766 "<tr align=\"center\" class=\"titre\">"
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3767 "<th>Cur</th><th>Max</th><th>Cur</th><th>Max</th>"
3768 "<th>Limit</th><th>Cumul</th><th>In</th><th>Out</th>"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3769 "<th>Req</th><th>Resp</th><th>Req</th><th>Conn</th>"
3770 "<th>Resp</th><th>Status</th><th>Weight</th><th>Act</th>"
3771 "<th>Bck</th><th>Check</th><th>Down</th></tr>\n"
3772 "",
3773 px->id);
3774
3775 if (buffer_write_chunk(rep, &msg) != 0)
3776 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3777
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3778 s->data_ctx.stats.px_st = DATA_ST_PX_FE;
3779 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3780
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3781 case DATA_ST_PX_FE:
3782 /* print the frontend */
3783 if (px->cap & PR_CAP_FE) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3784 chunk_printf(&msg, sizeof(trash),
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3785 /* name, queue */
3786 "<tr align=center class=\"frontend\"><td>Frontend</td><td colspan=2></td>"
3787 /* sessions : current, max, limit, cumul. */
3788 "<td align=right>%d</td><td align=right>%d</td><td align=right>%d</td><td align=right>%d</td>"
3789 /* bytes : in, out */
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3790 "<td align=right>%lld</td><td align=right>%lld</td>"
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3791 /* denied: req, resp */
3792 "<td align=right>%d</td><td align=right>%d</td>"
3793 /* errors : request, connect, response */
3794 "<td align=right>%d</td><td align=right></td><td align=right></td>"
3795 /* server status : reflect backend status */
3796 "<td align=center>%s</td>"
3797 /* rest of server: nothing */
3798 "<td align=center colspan=5></td></tr>"
3799 "",
3800 px->feconn, px->feconn_max, px->maxconn, px->cum_feconn,
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3801 px->bytes_in, px->bytes_out,
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3802 px->denied_req, px->denied_resp,
3803 px->failed_req,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3804 px->state == PR_STRUN ? "OPEN" :
3805 px->state == PR_STIDLE ? "FULL" : "STOP");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3806
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3807 if (buffer_write_chunk(rep, &msg) != 0)
3808 return 0;
3809 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3810
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3811 s->data_ctx.stats.sv = px->srv; /* may be NULL */
3812 s->data_ctx.stats.px_st = DATA_ST_PX_SV;
3813 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3814
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3815 case DATA_ST_PX_SV:
3816 /* stats.sv has been initialized above */
3817 while (s->data_ctx.stats.sv != NULL) {
3818 static char *srv_hlt_st[5] = { "DOWN", "DN %d/%d &uarr;", "UP %d/%d &darr;", "UP", "<i>no check</i>" };
3819 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]3820
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3821 sv = s->data_ctx.stats.sv;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3822
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3823 /* FIXME: produce some small strings for "UP/DOWN x/y &#xxxx;" */
3824 if (!(sv->state & SRV_CHECKED))
3825 sv_state = 4;
3826 else if (sv->state & SRV_RUNNING)
3827 if (sv->health == sv->rise + sv->fall - 1)
3828 sv_state = 3; /* UP */
3829 else
3830 sv_state = 2; /* going down */
3831 else
3832 if (sv->health)
3833 sv_state = 1; /* going up */
3834 else
3835 sv_state = 0; /* DOWN */
3836
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]3837 if ((sv_state == 0) && (s->flags & SN_STAT_HIDEDWN)) {
3838 /* do not report servers which are DOWN */
3839 s->data_ctx.stats.sv = sv->next;
3840 continue;
3841 }
3842
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3843 chunk_printf(&msg, sizeof(trash),
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3844 /* name */
3845 "<tr align=\"center\" class=\"%s%d\"><td>%s</td>"
3846 /* queue : current, max */
3847 "<td align=right>%d</td><td align=right>%d</td>"
3848 /* sessions : current, max, limit, cumul */
3849 "<td align=right>%d</td><td align=right>%d</td><td align=right>%s</td><td align=right>%d</td>"
3850 /* bytes : in, out */
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3851 "<td align=right>%lld</td><td align=right>%lld</td>"
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3852 /* denied: req, resp */
3853 "<td align=right></td><td align=right>%d</td>"
3854 /* errors : request, connect, response */
3855 "<td align=right></td><td align=right>%d</td><td align=right>%d</td>\n"
3856 "",
Willy Tarreau368e96a2007-01-07 00:16:15 +0100[diff] [blame]3857 (sv->state & SRV_BACKUP) ? "backup" : "active",
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3858 sv_state, sv->id,
3859 sv->nbpend, sv->nbpend_max,
3860 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]3861 sv->bytes_in, sv->bytes_out,
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3862 sv->failed_secu,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3863 sv->failed_conns, sv->failed_resp);
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3864
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3865 /* status */
3866 chunk_printf(&msg, sizeof(trash), "<td nowrap>");
3867 chunk_printf(&msg, sizeof(trash),
3868 srv_hlt_st[sv_state],
3869 (sv->state & SRV_RUNNING) ? (sv->health - sv->rise + 1) : (sv->health),
3870 (sv->state & SRV_RUNNING) ? (sv->fall) : (sv->rise));
3871
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3872 chunk_printf(&msg, sizeof(trash),
3873 /* weight */
3874 "</td><td>%d</td>"
3875 /* act, bck */
3876 "<td>%s</td><td>%s</td>"
3877 "",
Willy Tarreau417fae02007-03-25 21:16:40 +0200[diff] [blame]3878 sv->uweight,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3879 (sv->state & SRV_BACKUP) ? "-" : "Y",
3880 (sv->state & SRV_BACKUP) ? "Y" : "-");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3881
3882 /* check failures : unique, fatal */
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3883 if (sv->state & SRV_CHECKED)
3884 chunk_printf(&msg, sizeof(trash),
3885 "<td align=right>%d</td><td align=right>%d</td></tr>\n",
3886 sv->failed_checks, sv->down_trans);
3887 else
3888 chunk_printf(&msg, sizeof(trash),
3889 "<td colspan=2></td></tr>\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3890
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3891 if (buffer_write_chunk(rep, &msg) != 0)
3892 return 0;
3893
3894 s->data_ctx.stats.sv = sv->next;
3895 } /* while sv */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3896
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3897 s->data_ctx.stats.px_st = DATA_ST_PX_BE;
3898 /* fall through */
3899
3900 case DATA_ST_PX_BE:
3901 /* print the backend */
3902 if (px->cap & PR_CAP_BE) {
Willy Tarreau4b946c82007-07-25 00:28:06 +0200[diff] [blame]3903 int gcd = 1;
3904
Willy Tarreau5af3a692007-07-24 23:32:33 +0200[diff] [blame]3905 if (px->map_state & PR_MAP_RECALC)
3906 recalc_server_map(px);
3907
Willy Tarreau4b946c82007-07-25 00:28:06 +0200[diff] [blame]3908 /* The GCD which was computed causes the total effective
3909 * weight to appear lower than all weights. Let's
3910 * recompute it.
3911 */
3912 if (px->srv && px->srv->eweight)
3913 gcd = px->srv->uweight / px->srv->eweight;
3914
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3915 chunk_printf(&msg, sizeof(trash),
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3916 /* name */
3917 "<tr align=center class=\"backend\"><td>Backend</td>"
3918 /* queue : current, max */
3919 "<td align=right>%d</td><td align=right>%d</td>"
3920 /* sessions : current, max, limit, cumul. */
3921 "<td align=right>%d</td><td align=right>%d</td><td align=right>%d</td><td align=right>%d</td>"
3922 /* bytes : in, out */
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3923 "<td align=right>%lld</td><td align=right>%lld</td>"
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3924 /* denied: req, resp */
3925 "<td align=right>%d</td><td align=right>%d</td>"
3926 /* errors : request, connect, response */
3927 "<td align=right></td><td align=right>%d</td><td align=right>%d</td>\n"
3928 /* server status : reflect backend status (up/down) : we display UP
3929 * if the backend has known working servers or if it has no server at
3930 * all (eg: for stats). Tthen we display the total weight, number of
3931 * active and backups. */
3932 "<td align=center>%s</td><td align=center>%d</td>"
3933 "<td align=center>%d</td><td align=center>%d</td>"
3934 /* rest of server: nothing */
3935 "<td align=center colspan=2></td></tr>"
3936 "",
3937 px->nbpend /* or px->totpend ? */, px->nbpend_max,
3938 px->beconn, px->beconn_max, px->fullconn, px->cum_beconn,
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3939 px->bytes_in, px->bytes_out,
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3940 px->denied_req, px->denied_resp,
3941 px->failed_conns, px->failed_resp,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3942 (px->srv_map_sz > 0 || !px->srv) ? "UP" : "DOWN",
Willy Tarreau4b946c82007-07-25 00:28:06 +0200[diff] [blame]3943 px->srv_map_sz * gcd, px->srv_act, px->srv_bck);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3944
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3945 if (buffer_write_chunk(rep, &msg) != 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3946 return 0;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3947 }
3948
3949 s->data_ctx.stats.px_st = DATA_ST_PX_END;
3950 /* fall through */
3951
3952 case DATA_ST_PX_END:
3953 chunk_printf(&msg, sizeof(trash), "</table><p>\n");
3954
3955 if (buffer_write_chunk(rep, &msg) != 0)
3956 return 0;
3957
3958 s->data_ctx.stats.px_st = DATA_ST_PX_FIN;
3959 /* fall through */
3960
3961 case DATA_ST_PX_FIN:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3962 return 1;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3963
3964 default:
3965 /* unknown state, we should put an abort() here ! */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3966 return 1;
3967 }
3968}
3969
3970
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3971/* Iterate the same filter through all request headers.
3972 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3973 * Since it can manage the switch to another backend, it updates the per-proxy
3974 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3975 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3976int 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]3977{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3978 char term;
3979 char *cur_ptr, *cur_end, *cur_next;
3980 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3981 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3982 struct hdr_idx_elem *cur_hdr;
3983 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]3984
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3985 last_hdr = 0;
3986
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3987 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3988 old_idx = 0;
3989
3990 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3991 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3992 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3993 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3994 (exp->action == ACT_ALLOW ||
3995 exp->action == ACT_DENY ||
3996 exp->action == ACT_TARPIT))
3997 return 0;
3998
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3999 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4000 if (!cur_idx)
4001 break;
4002
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4003 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4004 cur_ptr = cur_next;
4005 cur_end = cur_ptr + cur_hdr->len;
4006 cur_next = cur_end + cur_hdr->cr + 1;
4007
4008 /* Now we have one header between cur_ptr and cur_end,
4009 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4010 */
4011
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4012 /* The annoying part is that pattern matching needs
4013 * that we modify the contents to null-terminate all
4014 * strings before testing them.
4015 */
4016
4017 term = *cur_end;
4018 *cur_end = '\0';
4019
4020 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4021 switch (exp->action) {
4022 case ACT_SETBE:
4023 /* It is not possible to jump a second time.
4024 * FIXME: should we return an HTTP/500 here so that
4025 * the admin knows there's a problem ?
4026 */
4027 if (t->be != t->fe)
4028 break;
4029
4030 /* Swithing Proxy */
4031 t->be = (struct proxy *) exp->replace;
4032
4033 /* right now, the backend switch is not too much complicated
4034 * because we have associated req_cap and rsp_cap to the
4035 * frontend, and the beconn will be updated later.
4036 */
4037
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4038 t->rep->rto = t->req->wto = t->be->srvtimeout;
4039 t->req->cto = t->be->contimeout;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4040 last_hdr = 1;
4041 break;
4042
4043 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4044 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4045 last_hdr = 1;
4046 break;
4047
4048 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4049 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4050 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4051 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4052 break;
4053
4054 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4055 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4056 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4057 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4058 break;
4059
4060 case ACT_REPLACE:
4061 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4062 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
4063 /* FIXME: if the user adds a newline in the replacement, the
4064 * index will not be recalculated for now, and the new line
4065 * will not be counted as a new header.
4066 */
4067
4068 cur_end += delta;
4069 cur_next += delta;
4070 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4071 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4072 break;
4073
4074 case ACT_REMOVE:
4075 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
4076 cur_next += delta;
4077
4078 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4079 txn->req.eoh += delta;
4080 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4081 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4082 cur_hdr->len = 0;
4083 cur_end = NULL; /* null-term has been rewritten */
4084 break;
4085
4086 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4087 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4088 if (cur_end)
4089 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4090
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4091 /* keep the link from this header to next one in case of later
4092 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4093 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4094 old_idx = cur_idx;
4095 }
4096 return 0;
4097}
4098
4099
4100/* Apply the filter to the request line.
4101 * Returns 0 if nothing has been done, 1 if the filter has been applied,
4102 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4103 * Since it can manage the switch to another backend, it updates the per-proxy
4104 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4105 */
4106int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
4107{
4108 char term;
4109 char *cur_ptr, *cur_end;
4110 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4111 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4112 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4113
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4114
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4115 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4116 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4117 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4118 (exp->action == ACT_ALLOW ||
4119 exp->action == ACT_DENY ||
4120 exp->action == ACT_TARPIT))
4121 return 0;
4122 else if (exp->action == ACT_REMOVE)
4123 return 0;
4124
4125 done = 0;
4126
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4127 cur_ptr = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4128 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4129
4130 /* Now we have the request line between cur_ptr and cur_end */
4131
4132 /* The annoying part is that pattern matching needs
4133 * that we modify the contents to null-terminate all
4134 * strings before testing them.
4135 */
4136
4137 term = *cur_end;
4138 *cur_end = '\0';
4139
4140 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4141 switch (exp->action) {
4142 case ACT_SETBE:
4143 /* It is not possible to jump a second time.
4144 * FIXME: should we return an HTTP/500 here so that
4145 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4146 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4147 if (t->be != t->fe)
4148 break;
4149
4150 /* Swithing Proxy */
4151 t->be = (struct proxy *) exp->replace;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4152
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4153 /* right now, the backend switch is not too much complicated
4154 * because we have associated req_cap and rsp_cap to the
4155 * frontend, and the beconn will be updated later.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4156 */
4157
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4158 t->rep->rto = t->req->wto = t->be->srvtimeout;
4159 t->req->cto = t->be->contimeout;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4160 done = 1;
4161 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4162
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4163 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4164 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4165 done = 1;
4166 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4167
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4168 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4169 txn->flags |= TX_CLDENY;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4170 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4171 done = 1;
4172 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4173
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4174 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4175 txn->flags |= TX_CLTARPIT;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4176 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4177 done = 1;
4178 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4179
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4180 case ACT_REPLACE:
4181 *cur_end = term; /* restore the string terminator */
4182 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4183 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
4184 /* FIXME: if the user adds a newline in the replacement, the
4185 * index will not be recalculated for now, and the new line
4186 * will not be counted as a new header.
4187 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4188
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4189 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4190 cur_end += delta;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4191
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4192 txn->req.sol = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4193 cur_end = (char *)http_parse_reqline(&txn->req, req->data,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4194 HTTP_MSG_RQMETH,
4195 cur_ptr, cur_end + 1,
4196 NULL, NULL);
4197 if (unlikely(!cur_end))
4198 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4199
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4200 /* we have a full request and we know that we have either a CR
4201 * or an LF at <ptr>.
4202 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4203 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
4204 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]4205 /* there is no point trying this regex on headers */
4206 return 1;
4207 }
4208 }
4209 *cur_end = term; /* restore the string terminator */
4210 return done;
4211}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]4212
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4213
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4214
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4215/*
4216 * Apply all the req filters <exp> to all headers in buffer <req> of session <t>.
4217 * 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]4218 * unparsable request. Since it can manage the switch to another backend, it
4219 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4220 */
4221int apply_filters_to_request(struct session *t, struct buffer *req, struct hdr_exp *exp)
4222{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4223 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4224 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4225 while (exp && !(txn->flags & (TX_CLDENY|TX_CLTARPIT))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4226 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4227
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4228 /*
4229 * The interleaving of transformations and verdicts
4230 * makes it difficult to decide to continue or stop
4231 * the evaluation.
4232 */
4233
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4234 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4235 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4236 exp->action == ACT_TARPIT || exp->action == ACT_PASS)) {
4237 exp = exp->next;
4238 continue;
4239 }
4240
4241 /* Apply the filter to the request line. */
4242 ret = apply_filter_to_req_line(t, req, exp);
4243 if (unlikely(ret < 0))
4244 return -1;
4245
4246 if (likely(ret == 0)) {
4247 /* The filter did not match the request, it can be
4248 * iterated through all headers.
4249 */
4250 apply_filter_to_req_headers(t, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4251 }
4252 exp = exp->next;
4253 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4254 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4255}
4256
4257
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4258
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4259/*
4260 * Manager client-side cookie
4261 */
4262void manage_client_side_cookies(struct session *t, struct buffer *req)
4263{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4264 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4265 char *p1, *p2, *p3, *p4;
4266 char *del_colon, *del_cookie, *colon;
4267 int app_cookies;
4268
4269 appsess *asession_temp = NULL;
4270 appsess local_asession;
4271
4272 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4273 int cur_idx, old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4274
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4275 if (t->be->cookie_name == NULL &&
4276 t->be->appsession_name == NULL &&
4277 t->be->capture_name == NULL)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4278 return;
4279
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4280 /* Iterate through the headers.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4281 * we start with the start line.
4282 */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]4283 old_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4284 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4285
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4286 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4287 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4288 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4289
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4290 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4291 cur_ptr = cur_next;
4292 cur_end = cur_ptr + cur_hdr->len;
4293 cur_next = cur_end + cur_hdr->cr + 1;
4294
4295 /* We have one full header between cur_ptr and cur_end, and the
4296 * next header starts at cur_next. We're only interested in
4297 * "Cookie:" headers.
4298 */
4299
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4300 val = http_header_match2(cur_ptr, cur_end, "Cookie", 6);
4301 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4302 old_idx = cur_idx;
4303 continue;
4304 }
4305
4306 /* Now look for cookies. Conforming to RFC2109, we have to support
4307 * attributes whose name begin with a '$', and associate them with
4308 * the right cookie, if we want to delete this cookie.
4309 * So there are 3 cases for each cookie read :
4310 * 1) it's a special attribute, beginning with a '$' : ignore it.
4311 * 2) it's a server id cookie that we *MAY* want to delete : save
4312 * some pointers on it (last semi-colon, beginning of cookie...)
4313 * 3) it's an application cookie : we *MAY* have to delete a previous
4314 * "special" cookie.
4315 * At the end of loop, if a "special" cookie remains, we may have to
4316 * remove it. If no application cookie persists in the header, we
4317 * *MUST* delete it
4318 */
4319
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4320 colon = p1 = cur_ptr + val; /* first non-space char after 'Cookie:' */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4321
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4322 /* del_cookie == NULL => nothing to be deleted */
4323 del_colon = del_cookie = NULL;
4324 app_cookies = 0;
4325
4326 while (p1 < cur_end) {
4327 /* skip spaces and colons, but keep an eye on these ones */
4328 while (p1 < cur_end) {
4329 if (*p1 == ';' || *p1 == ',')
4330 colon = p1;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4331 else if (!isspace((unsigned char)*p1))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4332 break;
4333 p1++;
4334 }
4335
4336 if (p1 == cur_end)
4337 break;
4338
4339 /* p1 is at the beginning of the cookie name */
4340 p2 = p1;
4341 while (p2 < cur_end && *p2 != '=')
4342 p2++;
4343
4344 if (p2 == cur_end)
4345 break;
4346
4347 p3 = p2 + 1; /* skips the '=' sign */
4348 if (p3 == cur_end)
4349 break;
4350
4351 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4352 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';' && *p4 != ',')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4353 p4++;
4354
4355 /* here, we have the cookie name between p1 and p2,
4356 * and its value between p3 and p4.
4357 * we can process it :
4358 *
4359 * Cookie: NAME=VALUE;
4360 * | || || |
4361 * | || || +--> p4
4362 * | || |+-------> p3
4363 * | || +--------> p2
4364 * | |+------------> p1
4365 * | +-------------> colon
4366 * +--------------------> cur_ptr
4367 */
4368
4369 if (*p1 == '$') {
4370 /* skip this one */
4371 }
4372 else {
4373 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4374 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4375 txn->cli_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4376 (p4 - p1 >= t->fe->capture_namelen) &&
4377 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4378 int log_len = p4 - p1;
4379
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]4380 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4381 Alert("HTTP logging : out of memory.\n");
4382 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4383 if (log_len > t->fe->capture_len)
4384 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4385 memcpy(txn->cli_cookie, p1, log_len);
4386 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4387 }
4388 }
4389
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4390 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4391 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4392 /* Cool... it's the right one */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4393 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4394 char *delim;
4395
4396 /* if we're in cookie prefix mode, we'll search the delimitor so that we
4397 * have the server ID betweek p3 and delim, and the original cookie between
4398 * delim+1 and p4. Otherwise, delim==p4 :
4399 *
4400 * Cookie: NAME=SRV~VALUE;
4401 * | || || | |
4402 * | || || | +--> p4
4403 * | || || +--------> delim
4404 * | || |+-----------> p3
4405 * | || +------------> p2
4406 * | |+----------------> p1
4407 * | +-----------------> colon
4408 * +------------------------> cur_ptr
4409 */
4410
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4411 if (t->be->options & PR_O_COOK_PFX) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4412 for (delim = p3; delim < p4; delim++)
4413 if (*delim == COOKIE_DELIM)
4414 break;
4415 }
4416 else
4417 delim = p4;
4418
4419
4420 /* Here, we'll look for the first running server which supports the cookie.
4421 * This allows to share a same cookie between several servers, for example
4422 * to dedicate backup servers to specific servers only.
4423 * However, to prevent clients from sticking to cookie-less backup server
4424 * when they have incidentely learned an empty cookie, we simply ignore
4425 * empty cookies and mark them as invalid.
4426 */
4427 if (delim == p3)
4428 srv = NULL;
4429
4430 while (srv) {
Willy Tarreau92f2ab12007-02-02 22:14:47 +0100[diff] [blame]4431 if (srv->cookie && (srv->cklen == delim - p3) &&
4432 !memcmp(p3, srv->cookie, delim - p3)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4433 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4434 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4435 txn->flags &= ~TX_CK_MASK;
4436 txn->flags |= TX_CK_VALID;
4437 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4438 t->srv = srv;
4439 break;
4440 } else {
4441 /* we found a server, but it's down */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4442 txn->flags &= ~TX_CK_MASK;
4443 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4444 }
4445 }
4446 srv = srv->next;
4447 }
4448
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4449 if (!srv && !(txn->flags & TX_CK_DOWN)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4450 /* no server matched this cookie */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4451 txn->flags &= ~TX_CK_MASK;
4452 txn->flags |= TX_CK_INVALID;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4453 }
4454
4455 /* depending on the cookie mode, we may have to either :
4456 * - delete the complete cookie if we're in insert+indirect mode, so that
4457 * the server never sees it ;
4458 * - remove the server id from the cookie value, and tag the cookie as an
4459 * application cookie so that it does not get accidentely removed later,
4460 * if we're in cookie prefix mode
4461 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4462 if ((t->be->options & PR_O_COOK_PFX) && (delim != p4)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4463 int delta; /* negative */
4464
4465 delta = buffer_replace2(req, p3, delim + 1, NULL, 0);
4466 p4 += delta;
4467 cur_end += delta;
4468 cur_next += delta;
4469 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4470 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4471
4472 del_cookie = del_colon = NULL;
4473 app_cookies++; /* protect the header from deletion */
4474 }
4475 else if (del_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4476 (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]4477 del_cookie = p1;
4478 del_colon = colon;
4479 }
4480 } else {
4481 /* now we know that we must keep this cookie since it's
4482 * not ours. But if we wanted to delete our cookie
4483 * earlier, we cannot remove the complete header, but we
4484 * can remove the previous block itself.
4485 */
4486 app_cookies++;
4487
4488 if (del_cookie != NULL) {
4489 int delta; /* negative */
4490
4491 delta = buffer_replace2(req, del_cookie, p1, NULL, 0);
4492 p4 += delta;
4493 cur_end += delta;
4494 cur_next += delta;
4495 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4496 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4497 del_cookie = del_colon = NULL;
4498 }
4499 }
4500
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4501 if ((t->be->appsession_name != NULL) &&
4502 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4503 /* first, let's see if the cookie is our appcookie*/
4504
4505 /* Cool... it's the right one */
4506
4507 asession_temp = &local_asession;
4508
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4509 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4510 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
4511 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
4512 return;
4513 }
4514
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4515 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4516 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4517 asession_temp->serverid = NULL;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4518
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4519 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4520 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
4521 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4522 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4523 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4524 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4525 Alert("Not enough memory process_cli():asession:calloc().\n");
4526 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4527 return;
4528 }
4529
4530 asession_temp->sessid = local_asession.sessid;
4531 asession_temp->serverid = local_asession.serverid;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4532 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4533 } else {
4534 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4535 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4536 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4537 if (asession_temp->serverid == NULL) {
4538 Alert("Found Application Session without matching server.\n");
4539 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4540 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4541 while (srv) {
4542 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4543 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4544 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4545 txn->flags &= ~TX_CK_MASK;
4546 txn->flags |= TX_CK_VALID;
4547 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4548 t->srv = srv;
4549 break;
4550 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4551 txn->flags &= ~TX_CK_MASK;
4552 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4553 }
4554 }
4555 srv = srv->next;
4556 }/* end while(srv) */
4557 }/* end else if server == NULL */
4558
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]4559 tv_add(&asession_temp->expire, &now, &t->be->appsession_timeout);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4560 }/* end if ((t->proxy->appsession_name != NULL) ... */
4561 }
4562
4563 /* we'll have to look for another cookie ... */
4564 p1 = p4;
4565 } /* while (p1 < cur_end) */
4566
4567 /* There's no more cookie on this line.
4568 * We may have marked the last one(s) for deletion.
4569 * We must do this now in two ways :
4570 * - if there is no app cookie, we simply delete the header ;
4571 * - if there are app cookies, we must delete the end of the
4572 * string properly, including the colon/semi-colon before
4573 * the cookie name.
4574 */
4575 if (del_cookie != NULL) {
4576 int delta;
4577 if (app_cookies) {
4578 delta = buffer_replace2(req, del_colon, cur_end, NULL, 0);
4579 cur_end = del_colon;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4580 cur_hdr->len += delta;
4581 } else {
4582 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4583
4584 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4585 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4586 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4587 cur_hdr->len = 0;
4588 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]4589 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4590 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4591 }
4592
4593 /* keep the link from this header to next one */
4594 old_idx = cur_idx;
4595 } /* end of cookie processing on this header */
4596}
4597
4598
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4599/* Iterate the same filter through all response headers contained in <rtr>.
4600 * Returns 1 if this filter can be stopped upon return, otherwise 0.
4601 */
4602int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4603{
4604 char term;
4605 char *cur_ptr, *cur_end, *cur_next;
4606 int cur_idx, old_idx, last_hdr;
4607 struct http_txn *txn = &t->txn;
4608 struct hdr_idx_elem *cur_hdr;
4609 int len, delta;
4610
4611 last_hdr = 0;
4612
4613 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4614 old_idx = 0;
4615
4616 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4617 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4618 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4619 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4620 (exp->action == ACT_ALLOW ||
4621 exp->action == ACT_DENY))
4622 return 0;
4623
4624 cur_idx = txn->hdr_idx.v[old_idx].next;
4625 if (!cur_idx)
4626 break;
4627
4628 cur_hdr = &txn->hdr_idx.v[cur_idx];
4629 cur_ptr = cur_next;
4630 cur_end = cur_ptr + cur_hdr->len;
4631 cur_next = cur_end + cur_hdr->cr + 1;
4632
4633 /* Now we have one header between cur_ptr and cur_end,
4634 * and the next header starts at cur_next.
4635 */
4636
4637 /* The annoying part is that pattern matching needs
4638 * that we modify the contents to null-terminate all
4639 * strings before testing them.
4640 */
4641
4642 term = *cur_end;
4643 *cur_end = '\0';
4644
4645 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4646 switch (exp->action) {
4647 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4648 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4649 last_hdr = 1;
4650 break;
4651
4652 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4653 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4654 last_hdr = 1;
4655 break;
4656
4657 case ACT_REPLACE:
4658 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4659 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4660 /* FIXME: if the user adds a newline in the replacement, the
4661 * index will not be recalculated for now, and the new line
4662 * will not be counted as a new header.
4663 */
4664
4665 cur_end += delta;
4666 cur_next += delta;
4667 cur_hdr->len += delta;
4668 txn->rsp.eoh += delta;
4669 break;
4670
4671 case ACT_REMOVE:
4672 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4673 cur_next += delta;
4674
4675 /* FIXME: this should be a separate function */
4676 txn->rsp.eoh += delta;
4677 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4678 txn->hdr_idx.used--;
4679 cur_hdr->len = 0;
4680 cur_end = NULL; /* null-term has been rewritten */
4681 break;
4682
4683 }
4684 }
4685 if (cur_end)
4686 *cur_end = term; /* restore the string terminator */
4687
4688 /* keep the link from this header to next one in case of later
4689 * removal of next header.
4690 */
4691 old_idx = cur_idx;
4692 }
4693 return 0;
4694}
4695
4696
4697/* Apply the filter to the status line in the response buffer <rtr>.
4698 * Returns 0 if nothing has been done, 1 if the filter has been applied,
4699 * or -1 if a replacement resulted in an invalid status line.
4700 */
4701int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4702{
4703 char term;
4704 char *cur_ptr, *cur_end;
4705 int done;
4706 struct http_txn *txn = &t->txn;
4707 int len, delta;
4708
4709
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4710 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4711 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4712 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4713 (exp->action == ACT_ALLOW ||
4714 exp->action == ACT_DENY))
4715 return 0;
4716 else if (exp->action == ACT_REMOVE)
4717 return 0;
4718
4719 done = 0;
4720
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4721 cur_ptr = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4722 cur_end = cur_ptr + txn->rsp.sl.rq.l;
4723
4724 /* Now we have the status line between cur_ptr and cur_end */
4725
4726 /* The annoying part is that pattern matching needs
4727 * that we modify the contents to null-terminate all
4728 * strings before testing them.
4729 */
4730
4731 term = *cur_end;
4732 *cur_end = '\0';
4733
4734 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4735 switch (exp->action) {
4736 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4737 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4738 done = 1;
4739 break;
4740
4741 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4742 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4743 done = 1;
4744 break;
4745
4746 case ACT_REPLACE:
4747 *cur_end = term; /* restore the string terminator */
4748 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4749 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4750 /* FIXME: if the user adds a newline in the replacement, the
4751 * index will not be recalculated for now, and the new line
4752 * will not be counted as a new header.
4753 */
4754
4755 txn->rsp.eoh += delta;
4756 cur_end += delta;
4757
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4758 txn->rsp.sol = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4759 cur_end = (char *)http_parse_stsline(&txn->rsp, rtr->data,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]4760 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4761 cur_ptr, cur_end + 1,
4762 NULL, NULL);
4763 if (unlikely(!cur_end))
4764 return -1;
4765
4766 /* we have a full respnse and we know that we have either a CR
4767 * or an LF at <ptr>.
4768 */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4769 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]4770 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.rq.l, *cur_end == '\r');
4771 /* there is no point trying this regex on headers */
4772 return 1;
4773 }
4774 }
4775 *cur_end = term; /* restore the string terminator */
4776 return done;
4777}
4778
4779
4780
4781/*
4782 * Apply all the resp filters <exp> to all headers in buffer <rtr> of session <t>.
4783 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
4784 * unparsable response.
4785 */
4786int apply_filters_to_response(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4787{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4788 struct http_txn *txn = &t->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4789 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4790 while (exp && !(txn->flags & TX_SVDENY)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4791 int ret;
4792
4793 /*
4794 * The interleaving of transformations and verdicts
4795 * makes it difficult to decide to continue or stop
4796 * the evaluation.
4797 */
4798
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4799 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4800 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4801 exp->action == ACT_PASS)) {
4802 exp = exp->next;
4803 continue;
4804 }
4805
4806 /* Apply the filter to the status line. */
4807 ret = apply_filter_to_sts_line(t, rtr, exp);
4808 if (unlikely(ret < 0))
4809 return -1;
4810
4811 if (likely(ret == 0)) {
4812 /* The filter did not match the response, it can be
4813 * iterated through all headers.
4814 */
4815 apply_filter_to_resp_headers(t, rtr, exp);
4816 }
4817 exp = exp->next;
4818 }
4819 return 0;
4820}
4821
4822
4823
4824/*
4825 * Manager server-side cookies
4826 */
4827void manage_server_side_cookies(struct session *t, struct buffer *rtr)
4828{
4829 struct http_txn *txn = &t->txn;
4830 char *p1, *p2, *p3, *p4;
4831
4832 appsess *asession_temp = NULL;
4833 appsess local_asession;
4834
4835 char *cur_ptr, *cur_end, *cur_next;
4836 int cur_idx, old_idx, delta;
4837
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4838 if (t->be->cookie_name == NULL &&
4839 t->be->appsession_name == NULL &&
4840 t->be->capture_name == NULL &&
4841 !(t->be->options & PR_O_CHK_CACHE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4842 return;
4843
4844 /* Iterate through the headers.
4845 * we start with the start line.
4846 */
4847 old_idx = 0;
4848 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4849
4850 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
4851 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4852 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4853
4854 cur_hdr = &txn->hdr_idx.v[cur_idx];
4855 cur_ptr = cur_next;
4856 cur_end = cur_ptr + cur_hdr->len;
4857 cur_next = cur_end + cur_hdr->cr + 1;
4858
4859 /* We have one full header between cur_ptr and cur_end, and the
4860 * next header starts at cur_next. We're only interested in
4861 * "Cookie:" headers.
4862 */
4863
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4864 val = http_header_match2(cur_ptr, cur_end, "Set-Cookie", 10);
4865 if (!val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4866 old_idx = cur_idx;
4867 continue;
4868 }
4869
4870 /* OK, right now we know we have a set-cookie at cur_ptr */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4871 txn->flags |= TX_SCK_ANY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4872
4873
4874 /* maybe we only wanted to see if there was a set-cookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4875 if (t->be->cookie_name == NULL &&
4876 t->be->appsession_name == NULL &&
4877 t->be->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4878 return;
4879
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4880 p1 = cur_ptr + val; /* first non-space char after 'Set-Cookie:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4881
4882 while (p1 < cur_end) { /* in fact, we'll break after the first cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4883 if (p1 == cur_end || *p1 == ';') /* end of cookie */
4884 break;
4885
4886 /* p1 is at the beginning of the cookie name */
4887 p2 = p1;
4888
4889 while (p2 < cur_end && *p2 != '=' && *p2 != ';')
4890 p2++;
4891
4892 if (p2 == cur_end || *p2 == ';') /* next cookie */
4893 break;
4894
4895 p3 = p2 + 1; /* skip the '=' sign */
4896 if (p3 == cur_end)
4897 break;
4898
4899 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4900 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';')
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4901 p4++;
4902
4903 /* here, we have the cookie name between p1 and p2,
4904 * and its value between p3 and p4.
4905 * we can process it.
4906 */
4907
4908 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4909 if (t->be->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4910 txn->srv_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4911 (p4 - p1 >= t->be->capture_namelen) &&
4912 memcmp(p1, t->be->capture_name, t->be->capture_namelen) == 0) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4913 int log_len = p4 - p1;
4914
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]4915 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4916 Alert("HTTP logging : out of memory.\n");
4917 }
4918
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4919 if (log_len > t->be->capture_len)
4920 log_len = t->be->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4921 memcpy(txn->srv_cookie, p1, log_len);
4922 txn->srv_cookie[log_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4923 }
4924
4925 /* now check if we need to process it for persistence */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4926 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4927 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4928 /* Cool... it's the right one */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4929 txn->flags |= TX_SCK_SEEN;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4930
4931 /* If the cookie is in insert mode on a known server, we'll delete
4932 * this occurrence because we'll insert another one later.
4933 * We'll delete it too if the "indirect" option is set and we're in
4934 * a direct access. */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4935 if (((t->srv) && (t->be->options & PR_O_COOK_INS)) ||
4936 ((t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_IND))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4937 /* this header must be deleted */
4938 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4939 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4940 txn->hdr_idx.used--;
4941 cur_hdr->len = 0;
4942 cur_next += delta;
4943 txn->rsp.eoh += delta;
4944
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4945 txn->flags |= TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4946 }
4947 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4948 (t->be->options & PR_O_COOK_RW)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4949 /* replace bytes p3->p4 with the cookie name associated
4950 * with this server since we know it.
4951 */
4952 delta = buffer_replace2(rtr, p3, p4, t->srv->cookie, t->srv->cklen);
4953 cur_hdr->len += delta;
4954 cur_next += delta;
4955 txn->rsp.eoh += delta;
4956
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4957 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4958 }
4959 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4960 (t->be->options & PR_O_COOK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4961 /* insert the cookie name associated with this server
4962 * before existing cookie, and insert a delimitor between them..
4963 */
4964 delta = buffer_replace2(rtr, p3, p3, t->srv->cookie, t->srv->cklen + 1);
4965 cur_hdr->len += delta;
4966 cur_next += delta;
4967 txn->rsp.eoh += delta;
4968
4969 p3[t->srv->cklen] = COOKIE_DELIM;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4970 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4971 }
4972 }
4973 /* next, let's see if the cookie is our appcookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4974 else if ((t->be->appsession_name != NULL) &&
4975 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4976
4977 /* Cool... it's the right one */
4978
4979 size_t server_id_len = strlen(t->srv->id) + 1;
4980 asession_temp = &local_asession;
4981
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4982 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4983 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4984 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4985 return;
4986 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4987 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4988 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4989 asession_temp->serverid = NULL;
4990
4991 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4992 if (appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid) == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4993 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4994 Alert("Not enough Memory process_srv():asession:calloc().\n");
4995 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
4996 return;
4997 }
4998 asession_temp->sessid = local_asession.sessid;
4999 asession_temp->serverid = local_asession.serverid;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5000 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
5001 } else {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5002 /* free wasted memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5003 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5004 }
5005
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5006 if (asession_temp->serverid == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5007 if ((asession_temp->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5008 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
5009 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
5010 return;
5011 }
5012 asession_temp->serverid[0] = '\0';
5013 }
5014
5015 if (asession_temp->serverid[0] == '\0')
5016 memcpy(asession_temp->serverid, t->srv->id, server_id_len);
5017
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]5018 tv_add(&asession_temp->expire, &now, &t->be->appsession_timeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5019
5020#if defined(DEBUG_HASH)
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5021 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5022#endif
5023 }/* end if ((t->proxy->appsession_name != NULL) ... */
5024 break; /* we don't want to loop again since there cannot be another cookie on the same line */
5025 } /* we're now at the end of the cookie value */
5026
5027 /* keep the link from this header to next one */
5028 old_idx = cur_idx;
5029 } /* end of cookie processing on this header */
5030}
5031
5032
5033
5034/*
5035 * Check if response is cacheable or not. Updates t->flags.
5036 */
5037void check_response_for_cacheability(struct session *t, struct buffer *rtr)
5038{
5039 struct http_txn *txn = &t->txn;
5040 char *p1, *p2;
5041
5042 char *cur_ptr, *cur_end, *cur_next;
5043 int cur_idx;
5044
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5045 if (!txn->flags & TX_CACHEABLE)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5046 return;
5047
5048 /* Iterate through the headers.
5049 * we start with the start line.
5050 */
5051 cur_idx = 0;
5052 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
5053
5054 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
5055 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5056 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5057
5058 cur_hdr = &txn->hdr_idx.v[cur_idx];
5059 cur_ptr = cur_next;
5060 cur_end = cur_ptr + cur_hdr->len;
5061 cur_next = cur_end + cur_hdr->cr + 1;
5062
5063 /* We have one full header between cur_ptr and cur_end, and the
5064 * next header starts at cur_next. We're only interested in
5065 * "Cookie:" headers.
5066 */
5067
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5068 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
5069 if (val) {
5070 if ((cur_end - (cur_ptr + val) >= 8) &&
5071 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
5072 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5073 return;
5074 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5075 }
5076
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5077 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
5078 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5079 continue;
5080
5081 /* OK, right now we know we have a cache-control header at cur_ptr */
5082
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5083 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5084
5085 if (p1 >= cur_end) /* no more info */
5086 continue;
5087
5088 /* p1 is at the beginning of the value */
5089 p2 = p1;
5090
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]5091 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5092 p2++;
5093
5094 /* we have a complete value between p1 and p2 */
5095 if (p2 < cur_end && *p2 == '=') {
5096 /* we have something of the form no-cache="set-cookie" */
5097 if ((cur_end - p1 >= 21) &&
5098 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
5099 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5100 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5101 continue;
5102 }
5103
5104 /* OK, so we know that either p2 points to the end of string or to a comma */
5105 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
5106 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
5107 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
5108 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5109 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5110 return;
5111 }
5112
5113 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5114 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5115 continue;
5116 }
5117 }
5118}
5119
5120
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5121/*
5122 * Try to retrieve a known appsession in the URI, then the associated server.
5123 * If the server is found, it's assigned to the session.
5124 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5125void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5126{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5127 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5128 appsess *asession_temp = NULL;
5129 appsess local_asession;
5130 char *request_line;
5131
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5132 if (t->be->appsession_name == NULL ||
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]5133 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST) ||
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5134 (request_line = memchr(begin, ';', len)) == NULL ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5135 ((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]5136 return;
5137
5138 /* skip ';' */
5139 request_line++;
5140
5141 /* look if we have a jsessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5142 if (strncasecmp(request_line, t->be->appsession_name, t->be->appsession_name_len) != 0)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5143 return;
5144
5145 /* skip jsessionid= */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5146 request_line += t->be->appsession_name_len + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5147
5148 /* First try if we already have an appsession */
5149 asession_temp = &local_asession;
5150
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5151 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5152 Alert("Not enough memory process_cli():asession_temp->sessid:calloc().\n");
5153 send_log(t->be, LOG_ALERT, "Not enough Memory process_cli():asession_temp->sessid:calloc().\n");
5154 return;
5155 }
5156
5157 /* Copy the sessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5158 memcpy(asession_temp->sessid, request_line, t->be->appsession_len);
5159 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5160 asession_temp->serverid = NULL;
5161
5162 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5163 if (appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid) == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5164 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5165 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5166 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5167 Alert("Not enough memory process_cli():asession:calloc().\n");
5168 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
5169 return;
5170 }
5171 asession_temp->sessid = local_asession.sessid;
5172 asession_temp->serverid = local_asession.serverid;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5173 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5174 }
5175 else {
5176 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5177 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5178 }
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5179
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]5180 tv_add(&asession_temp->expire, &now, &t->be->appsession_timeout);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5181 asession_temp->request_count++;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5182
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5183#if defined(DEBUG_HASH)
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5184 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5185#endif
5186 if (asession_temp->serverid == NULL) {
5187 Alert("Found Application Session without matching server.\n");
5188 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5189 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5190 while (srv) {
5191 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5192 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5193 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5194 txn->flags &= ~TX_CK_MASK;
5195 txn->flags |= TX_CK_VALID;
5196 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5197 t->srv = srv;
5198 break;
5199 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5200 txn->flags &= ~TX_CK_MASK;
5201 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5202 }
5203 }
5204 srv = srv->next;
5205 }
5206 }
5207}
5208
5209
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5210/*
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5211 * In a GET or HEAD request, check if the requested URI matches the stats uri
5212 * for the current backend, and if an authorization has been passed and is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5213 *
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5214 * 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]5215 * 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]5216 * produce_content() can be called to start sending data.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5217 *
5218 * Returns 1 if the session's state changes, otherwise 0.
5219 */
5220int stats_check_uri_auth(struct session *t, struct proxy *backend)
5221{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5222 struct http_txn *txn = &t->txn;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5223 struct uri_auth *uri_auth = backend->uri_auth;
5224 struct user_auth *user;
5225 int authenticated, cur_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5226 char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5227
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5228 /* check URI size */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5229 if (uri_auth->uri_len > txn->req.sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5230 return 0;
5231
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5232 h = t->req->data + txn->req.sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5233
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5234 /* the URI is in h */
5235 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5236 return 0;
5237
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]5238 h += uri_auth->uri_len;
5239 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 3) {
5240 if (memcmp(h, ";up", 3) == 0) {
5241 t->flags |= SN_STAT_HIDEDWN;
5242 break;
5243 }
5244 h++;
5245 }
5246
5247 if (uri_auth->refresh) {
5248 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
5249 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 10) {
5250 if (memcmp(h, ";norefresh", 10) == 0) {
5251 t->flags |= SN_STAT_NORFRSH;
5252 break;
5253 }
5254 h++;
5255 }
5256 }
5257
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5258 /* we are in front of a interceptable URI. Let's check
5259 * if there's an authentication and if it's valid.
5260 */
5261 user = uri_auth->users;
5262 if (!user) {
5263 /* no user auth required, it's OK */
5264 authenticated = 1;
5265 } else {
5266 authenticated = 0;
5267
5268 /* a user list is defined, we have to check.
5269 * skip 21 chars for "Authorization: Basic ".
5270 */
5271
5272 /* FIXME: this should move to an earlier place */
5273 cur_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5274 h = t->req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
5275 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
5276 int len = txn->hdr_idx.v[cur_idx].len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5277 if (len > 14 &&
5278 !strncasecmp("Authorization:", h, 14)) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5279 txn->auth_hdr.str = h;
5280 txn->auth_hdr.len = len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5281 break;
5282 }
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5283 h += len + txn->hdr_idx.v[cur_idx].cr + 1;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5284 }
5285
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5286 if (txn->auth_hdr.len < 21 ||
5287 memcmp(txn->auth_hdr.str + 14, " Basic ", 7))
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5288 user = NULL;
5289
5290 while (user) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5291 if ((txn->auth_hdr.len == user->user_len + 14 + 7)
5292 && !memcmp(txn->auth_hdr.str + 14 + 7,
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5293 user->user_pwd, user->user_len)) {
5294 authenticated = 1;
5295 break;
5296 }
5297 user = user->next;
5298 }
5299 }
5300
5301 if (!authenticated) {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]5302 struct chunk msg;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5303
5304 /* no need to go further */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]5305 msg.str = trash;
5306 msg.len = sprintf(trash, HTTP_401_fmt, uri_auth->auth_realm);
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]5307 txn->status = 401;
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]5308 client_retnclose(t, &msg);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5309 if (!(t->flags & SN_ERR_MASK))
5310 t->flags |= SN_ERR_PRXCOND;
5311 if (!(t->flags & SN_FINST_MASK))
5312 t->flags |= SN_FINST_R;
5313 return 1;
5314 }
5315
5316 /* The request is valid, the user is authenticate. Let's start sending
5317 * data.
5318 */
5319 t->cli_state = CL_STSHUTR;
5320 t->req->rlim = t->req->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]5321 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5322 t->data_source = DATA_SRC_STATS;
5323 t->data_state = DATA_ST_INIT;
5324 produce_content(t);
5325 return 1;
5326}
5327
5328
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5329/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5330 * Print a debug line with a header
5331 */
5332void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
5333{
5334 int len, max;
5335 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
5336 dir, (unsigned short)t->cli_fd, (unsigned short)t->srv_fd);
5337 max = end - start;
5338 UBOUND(max, sizeof(trash) - len - 1);
5339 len += strlcpy2(trash + len, start, max + 1);
5340 trash[len++] = '\n';
5341 write(1, trash, len);
5342}
5343
5344
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5345/************************************************************************/
5346/* The code below is dedicated to ACL parsing and matching */
5347/************************************************************************/
5348
5349
5350
5351
5352/* 1. Check on METHOD
5353 * We use the pre-parsed method if it is known, and store its number as an
5354 * integer. If it is unknown, we use the pointer and the length.
5355 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5356static int acl_parse_meth(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5357{
5358 int len, meth;
5359
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5360 len = strlen(*text);
5361 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5362
5363 pattern->val.i = meth;
5364 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5365 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5366 if (!pattern->ptr.str)
5367 return 0;
5368 pattern->len = len;
5369 }
5370 return 1;
5371}
5372
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5373static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5374acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, int dir,
5375 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5376{
5377 int meth;
5378 struct http_txn *txn = l7;
5379
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5380 if (txn->req.msg_state != HTTP_MSG_BODY)
5381 return 0;
5382
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5383 meth = txn->meth;
5384 test->i = meth;
5385 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5386 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5387 /* ensure the indexes are not affected */
5388 return 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5389 test->len = txn->req.sl.rq.m_l;
5390 test->ptr = txn->req.sol;
5391 }
5392 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
5393 return 1;
5394}
5395
5396static int acl_match_meth(struct acl_test *test, struct acl_pattern *pattern)
5397{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]5398 int icase;
5399
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5400 if (test->i != pattern->val.i)
5401 return 0;
5402
5403 if (test->i != HTTP_METH_OTHER)
5404 return 1;
5405
5406 /* Other method, we must compare the strings */
5407 if (pattern->len != test->len)
5408 return 0;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]5409
5410 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
5411 if ((icase && strncasecmp(pattern->ptr.str, test->ptr, test->len) != 0) ||
5412 (!icase && strncmp(pattern->ptr.str, test->ptr, test->len) != 0))
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5413 return 0;
5414 return 1;
5415}
5416
5417/* 2. Check on Request/Status Version
5418 * We simply compare strings here.
5419 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5420static int acl_parse_ver(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5421{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5422 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5423 if (!pattern->ptr.str)
5424 return 0;
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5425 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5426 return 1;
5427}
5428
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5429static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5430acl_fetch_rqver(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 char *ptr;
5435 int len;
5436
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5437 if (txn->req.msg_state != HTTP_MSG_BODY)
5438 return 0;
5439
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5440 len = txn->req.sl.rq.v_l;
5441 ptr = txn->req.sol + txn->req.sl.rq.v - txn->req.som;
5442
5443 while ((len-- > 0) && (*ptr++ != '/'));
5444 if (len <= 0)
5445 return 0;
5446
5447 test->ptr = ptr;
5448 test->len = len;
5449
5450 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
5451 return 1;
5452}
5453
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5454static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5455acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, int dir,
5456 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5457{
5458 struct http_txn *txn = l7;
5459 char *ptr;
5460 int len;
5461
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5462 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5463 return 0;
5464
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5465 len = txn->rsp.sl.st.v_l;
5466 ptr = txn->rsp.sol;
5467
5468 while ((len-- > 0) && (*ptr++ != '/'));
5469 if (len <= 0)
5470 return 0;
5471
5472 test->ptr = ptr;
5473 test->len = len;
5474
5475 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
5476 return 1;
5477}
5478
5479/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5480static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5481acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, int dir,
5482 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5483{
5484 struct http_txn *txn = l7;
5485 char *ptr;
5486 int len;
5487
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5488 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5489 return 0;
5490
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5491 len = txn->rsp.sl.st.c_l;
5492 ptr = txn->rsp.sol + txn->rsp.sl.st.c - txn->rsp.som;
5493
5494 test->i = __strl2ui(ptr, len);
5495 test->flags = ACL_TEST_F_VOL_1ST;
5496 return 1;
5497}
5498
5499/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5500static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5501acl_fetch_url(struct proxy *px, struct session *l4, void *l7, int dir,
5502 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5503{
5504 struct http_txn *txn = l7;
5505
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5506 if (txn->req.msg_state != HTTP_MSG_BODY)
5507 return 0;
5508 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5509 /* ensure the indexes are not affected */
5510 return 0;
5511
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5512 test->len = txn->req.sl.rq.u_l;
5513 test->ptr = txn->req.sol + txn->req.sl.rq.u;
5514
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]5515 /* we do not need to set READ_ONLY because the data is in a buffer */
5516 test->flags = ACL_TEST_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5517 return 1;
5518}
5519
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5520/* 5. Check on HTTP header. A pointer to the beginning of the value is returned.
5521 * This generic function is used by both acl_fetch_chdr() and acl_fetch_shdr().
5522 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5523static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5524acl_fetch_hdr(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5525 struct acl_expr *expr, struct acl_test *test)
5526{
5527 struct http_txn *txn = l7;
5528 struct hdr_idx *idx = &txn->hdr_idx;
5529 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5530
5531 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5532 /* search for header from the beginning */
5533 ctx->idx = 0;
5534
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5535 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5536 test->flags |= ACL_TEST_F_FETCH_MORE;
5537 test->flags |= ACL_TEST_F_VOL_HDR;
5538 test->len = ctx->vlen;
5539 test->ptr = (char *)ctx->line + ctx->val;
5540 return 1;
5541 }
5542
5543 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5544 test->flags |= ACL_TEST_F_VOL_HDR;
5545 return 0;
5546}
5547
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5548static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5549acl_fetch_chdr(struct proxy *px, struct session *l4, void *l7, int dir,
5550 struct acl_expr *expr, struct acl_test *test)
5551{
5552 struct http_txn *txn = l7;
5553
5554 if (txn->req.msg_state != HTTP_MSG_BODY)
5555 return 0;
5556 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5557 /* ensure the indexes are not affected */
5558 return 0;
5559
5560 return acl_fetch_hdr(px, l4, txn, txn->req.sol, expr, test);
5561}
5562
5563static int
5564acl_fetch_shdr(struct proxy *px, struct session *l4, void *l7, int dir,
5565 struct acl_expr *expr, struct acl_test *test)
5566{
5567 struct http_txn *txn = l7;
5568
5569 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5570 return 0;
5571
5572 return acl_fetch_hdr(px, l4, txn, txn->rsp.sol, expr, test);
5573}
5574
5575/* 6. Check on HTTP header count. The number of occurrences is returned.
5576 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
5577 */
5578static int
5579acl_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5580 struct acl_expr *expr, struct acl_test *test)
5581{
5582 struct http_txn *txn = l7;
5583 struct hdr_idx *idx = &txn->hdr_idx;
5584 struct hdr_ctx ctx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5585 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5586
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5587 ctx.idx = 0;
5588 cnt = 0;
5589 while (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, &ctx))
5590 cnt++;
5591
5592 test->i = cnt;
5593 test->flags = ACL_TEST_F_VOL_HDR;
5594 return 1;
5595}
5596
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5597static int
5598acl_fetch_chdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5599 struct acl_expr *expr, struct acl_test *test)
5600{
5601 struct http_txn *txn = l7;
5602
5603 if (txn->req.msg_state != HTTP_MSG_BODY)
5604 return 0;
5605 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5606 /* ensure the indexes are not affected */
5607 return 0;
5608
5609 return acl_fetch_hdr_cnt(px, l4, txn, txn->req.sol, expr, test);
5610}
5611
5612static int
5613acl_fetch_shdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5614 struct acl_expr *expr, struct acl_test *test)
5615{
5616 struct http_txn *txn = l7;
5617
5618 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5619 return 0;
5620
5621 return acl_fetch_hdr_cnt(px, l4, txn, txn->rsp.sol, expr, test);
5622}
5623
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5624/* 7. Check on HTTP header's integer value. The integer value is returned.
5625 * FIXME: the type is 'int', it may not be appropriate for everything.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5626 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5627 */
5628static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5629acl_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5630 struct acl_expr *expr, struct acl_test *test)
5631{
5632 struct http_txn *txn = l7;
5633 struct hdr_idx *idx = &txn->hdr_idx;
5634 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5635
5636 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5637 /* search for header from the beginning */
5638 ctx->idx = 0;
5639
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5640 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5641 test->flags |= ACL_TEST_F_FETCH_MORE;
5642 test->flags |= ACL_TEST_F_VOL_HDR;
5643 test->i = strl2ic((char *)ctx->line + ctx->val, ctx->vlen);
5644 return 1;
5645 }
5646
5647 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5648 test->flags |= ACL_TEST_F_VOL_HDR;
5649 return 0;
5650}
5651
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5652static int
5653acl_fetch_chdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5654 struct acl_expr *expr, struct acl_test *test)
5655{
5656 struct http_txn *txn = l7;
5657
5658 if (txn->req.msg_state != HTTP_MSG_BODY)
5659 return 0;
5660 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5661 /* ensure the indexes are not affected */
5662 return 0;
5663
5664 return acl_fetch_hdr_val(px, l4, txn, txn->req.sol, expr, test);
5665}
5666
5667static int
5668acl_fetch_shdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5669 struct acl_expr *expr, struct acl_test *test)
5670{
5671 struct http_txn *txn = l7;
5672
5673 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5674 return 0;
5675
5676 return acl_fetch_hdr_val(px, l4, txn, txn->rsp.sol, expr, test);
5677}
5678
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5679/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
5680 * the first '/' after the possible hostname, and ends before the possible '?'.
5681 */
5682static int
5683acl_fetch_path(struct proxy *px, struct session *l4, void *l7, int dir,
5684 struct acl_expr *expr, struct acl_test *test)
5685{
5686 struct http_txn *txn = l7;
5687 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5688
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5689 if (txn->req.msg_state != HTTP_MSG_BODY)
5690 return 0;
5691 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5692 /* ensure the indexes are not affected */
5693 return 0;
5694
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5695 ptr = txn->req.sol + txn->req.sl.rq.u;
5696 end = ptr + txn->req.sl.rq.u_l;
5697
5698 if (ptr >= end)
5699 return 0;
5700
5701 /* RFC2616, par. 5.1.2 :
5702 * Request-URI = "*" | absuri | abspath | authority
5703 */
5704
5705 if (*ptr == '*')
5706 return 0;
5707
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]5708 if (isalpha((unsigned char)*ptr)) {
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5709 /* this is a scheme as described by RFC3986, par. 3.1 */
5710 ptr++;
5711 while (ptr < end &&
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]5712 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5713 ptr++;
5714 /* skip '://' */
5715 if (ptr == end || *ptr++ != ':')
5716 return 0;
5717 if (ptr == end || *ptr++ != '/')
5718 return 0;
5719 if (ptr == end || *ptr++ != '/')
5720 return 0;
5721 }
5722 /* skip [user[:passwd]@]host[:[port]] */
5723
5724 while (ptr < end && *ptr != '/')
5725 ptr++;
5726
5727 if (ptr == end)
5728 return 0;
5729
5730 /* OK, we got the '/' ! */
5731 test->ptr = ptr;
5732
5733 while (ptr < end && *ptr != '?')
5734 ptr++;
5735
5736 test->len = ptr - test->ptr;
5737
5738 /* we do not need to set READ_ONLY because the data is in a buffer */
5739 test->flags = ACL_TEST_F_VOL_1ST;
5740 return 1;
5741}
5742
5743
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5744
5745/************************************************************************/
5746/* All supported keywords must be declared here. */
5747/************************************************************************/
5748
5749/* Note: must not be declared <const> as its list will be overwritten */
5750static struct acl_kw_list acl_kws = {{ },{
5751 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth },
5752 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str },
5753 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str },
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5754 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5755
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5756 { "url", acl_parse_str, acl_fetch_url, acl_match_str },
5757 { "url_beg", acl_parse_str, acl_fetch_url, acl_match_beg },
5758 { "url_end", acl_parse_str, acl_fetch_url, acl_match_end },
5759 { "url_sub", acl_parse_str, acl_fetch_url, acl_match_sub },
5760 { "url_dir", acl_parse_str, acl_fetch_url, acl_match_dir },
5761 { "url_dom", acl_parse_str, acl_fetch_url, acl_match_dom },
5762 { "url_reg", acl_parse_reg, acl_fetch_url, acl_match_reg },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5763
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5764 { "hdr", acl_parse_str, acl_fetch_chdr, acl_match_str },
5765 { "hdr_reg", acl_parse_reg, acl_fetch_chdr, acl_match_reg },
5766 { "hdr_beg", acl_parse_str, acl_fetch_chdr, acl_match_beg },
5767 { "hdr_end", acl_parse_str, acl_fetch_chdr, acl_match_end },
5768 { "hdr_sub", acl_parse_str, acl_fetch_chdr, acl_match_sub },
5769 { "hdr_dir", acl_parse_str, acl_fetch_chdr, acl_match_dir },
5770 { "hdr_dom", acl_parse_str, acl_fetch_chdr, acl_match_dom },
5771 { "hdr_cnt", acl_parse_int, acl_fetch_chdr_cnt,acl_match_int },
5772 { "hdr_val", acl_parse_int, acl_fetch_chdr_val,acl_match_int },
5773
5774 { "shdr", acl_parse_str, acl_fetch_shdr, acl_match_str },
5775 { "shdr_reg", acl_parse_reg, acl_fetch_shdr, acl_match_reg },
5776 { "shdr_beg", acl_parse_str, acl_fetch_shdr, acl_match_beg },
5777 { "shdr_end", acl_parse_str, acl_fetch_shdr, acl_match_end },
5778 { "shdr_sub", acl_parse_str, acl_fetch_shdr, acl_match_sub },
5779 { "shdr_dir", acl_parse_str, acl_fetch_shdr, acl_match_dir },
5780 { "shdr_dom", acl_parse_str, acl_fetch_shdr, acl_match_dom },
5781 { "shdr_cnt", acl_parse_int, acl_fetch_shdr_cnt,acl_match_int },
5782 { "shdr_val", acl_parse_int, acl_fetch_shdr_val,acl_match_int },
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5783
5784 { "path", acl_parse_str, acl_fetch_path, acl_match_str },
5785 { "path_reg", acl_parse_reg, acl_fetch_path, acl_match_reg },
5786 { "path_beg", acl_parse_str, acl_fetch_path, acl_match_beg },
5787 { "path_end", acl_parse_str, acl_fetch_path, acl_match_end },
5788 { "path_sub", acl_parse_str, acl_fetch_path, acl_match_sub },
5789 { "path_dir", acl_parse_str, acl_fetch_path, acl_match_dir },
5790 { "path_dom", acl_parse_str, acl_fetch_path, acl_match_dom },
5791
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]5792 { NULL, NULL, NULL, NULL },
5793
5794#if 0
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5795 { "line", acl_parse_str, acl_fetch_line, acl_match_str },
5796 { "line_reg", acl_parse_reg, acl_fetch_line, acl_match_reg },
5797 { "line_beg", acl_parse_str, acl_fetch_line, acl_match_beg },
5798 { "line_end", acl_parse_str, acl_fetch_line, acl_match_end },
5799 { "line_sub", acl_parse_str, acl_fetch_line, acl_match_sub },
5800 { "line_dir", acl_parse_str, acl_fetch_line, acl_match_dir },
5801 { "line_dom", acl_parse_str, acl_fetch_line, acl_match_dom },
5802
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5803 { "cook", acl_parse_str, acl_fetch_cook, acl_match_str },
5804 { "cook_reg", acl_parse_reg, acl_fetch_cook, acl_match_reg },
5805 { "cook_beg", acl_parse_str, acl_fetch_cook, acl_match_beg },
5806 { "cook_end", acl_parse_str, acl_fetch_cook, acl_match_end },
5807 { "cook_sub", acl_parse_str, acl_fetch_cook, acl_match_sub },
5808 { "cook_dir", acl_parse_str, acl_fetch_cook, acl_match_dir },
5809 { "cook_dom", acl_parse_str, acl_fetch_cook, acl_match_dom },
5810 { "cook_pst", acl_parse_none, acl_fetch_cook, acl_match_pst },
5811
5812 { "auth_user", acl_parse_str, acl_fetch_user, acl_match_str },
5813 { "auth_regex", acl_parse_reg, acl_fetch_user, acl_match_reg },
5814 { "auth_clear", acl_parse_str, acl_fetch_auth, acl_match_str },
5815 { "auth_md5", acl_parse_str, acl_fetch_auth, acl_match_md5 },
5816 { NULL, NULL, NULL, NULL },
5817#endif
5818}};
5819
5820
5821__attribute__((constructor))
5822static void __http_protocol_init(void)
5823{
5824 acl_register_keywords(&acl_kws);
5825}
5826
5827
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5828/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5829 * Local variables:
5830 * c-indent-level: 8
5831 * c-basic-offset: 8
5832 * End:
5833 */