Gitiles
Code Review Sign In
git01.mediatek.com / haproxy / 9198ab5e7cd743bf8f835d40bddf09a958b37ef0 / . / src / proto_http.c
blob: 3cd97fe823750ebe7f725c233af5826b117a77c7 [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++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]1908
1909 /* assign new parameters to the session from the new backend */
1910 t->rep->rto = t->req->wto = t->be->srvtimeout;
1911 t->req->cto = t->be->contimeout;
1912 t->conn_retries = t->be->conn_retries;
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]1913 t->flags |= SN_BE_ASSIGNED;
1914 break;
1915 }
1916 }
1917 }
1918
Willy Tarreau5fdfb912007-01-01 23:11:07 +0100[diff] [blame]1919 if (!(t->flags & SN_BE_ASSIGNED) && cur_proxy->defbe.be) {
1920 /* No backend was set, but there was a default
1921 * backend set in the frontend, so we use it and
1922 * loop again.
1923 */
1924 t->be = cur_proxy->defbe.be;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1925 t->be->beconn++;
1926 if (t->be->beconn > t->be->beconn_max)
1927 t->be->beconn_max = t->be->beconn;
1928 t->be->cum_beconn++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]1929
1930 /* assign new parameters to the session from the new backend */
1931 t->rep->rto = t->req->wto = t->be->srvtimeout;
1932 t->req->cto = t->be->contimeout;
1933 t->conn_retries = t->be->conn_retries;
Willy Tarreau5fdfb912007-01-01 23:11:07 +0100[diff] [blame]1934 t->flags |= SN_BE_ASSIGNED;
1935 }
1936 } while (t->be != cur_proxy); /* we loop only if t->be has changed */
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1937
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1938
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1939 if (!(t->flags & SN_BE_ASSIGNED)) {
1940 /* To ensure correct connection accounting on
1941 * the backend, we count the connection for the
1942 * one managing the queue.
1943 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1944 t->be->beconn++;
1945 if (t->be->beconn > t->be->beconn_max)
1946 t->be->beconn_max = t->be->beconn;
1947 t->be->cum_beconn++;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1948 t->flags |= SN_BE_ASSIGNED;
1949 }
1950
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1951 /*
1952 * Right now, we know that we have processed the entire headers
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1953 * and that unwanted requests have been filtered out. We can do
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1954 * whatever we want with the remaining request. Also, now we
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1955 * may have separate values for ->fe, ->be.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1956 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1957
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1958
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1959
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1960
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1961 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1962 * 7: the appsession cookie was looked up very early in 1.2,
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1963 * so let's do the same now.
1964 */
1965
1966 /* It needs to look into the URI */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1967 if (t->be->appsession_name) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1968 get_srv_from_appsession(t, &req->data[msg->som], msg->sl.rq.l);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1969 }
1970
1971
1972 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1973 * 8: Now we can work with the cookies.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1974 * Note that doing so might move headers in the request, but
1975 * the fields will stay coherent and the URI will not move.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1976 * This should only be performed in the backend.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1977 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]1978 if (!(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1979 manage_client_side_cookies(t, req);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1980
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1981
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1982 /*
Willy Tarreaubb046ac2007-03-03 19:17:03 +0100[diff] [blame]1983 * 9: add X-Forwarded-For if either the frontend or the backend
1984 * asks for it.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1985 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1986 if ((t->fe->options | t->be->options) & PR_O_FWDFOR) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1987 if (t->cli_addr.ss_family == AF_INET) {
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]1988 /* Add an X-Forwarded-For header unless the source IP is
1989 * in the 'except' network range.
1990 */
1991 if ((!t->fe->except_mask.s_addr ||
1992 (((struct sockaddr_in *)&t->cli_addr)->sin_addr.s_addr & t->fe->except_mask.s_addr)
1993 != t->fe->except_net.s_addr) &&
1994 (!t->be->except_mask.s_addr ||
1995 (((struct sockaddr_in *)&t->cli_addr)->sin_addr.s_addr & t->be->except_mask.s_addr)
1996 != t->be->except_net.s_addr)) {
1997 int len;
1998 unsigned char *pn;
1999 pn = (unsigned char *)&((struct sockaddr_in *)&t->cli_addr)->sin_addr;
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2000
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2001 len = sprintf(trash, "X-Forwarded-For: %d.%d.%d.%d",
2002 pn[0], pn[1], pn[2], pn[3]);
2003
2004 if (unlikely(http_header_add_tail2(req, &txn->req,
2005 &txn->hdr_idx, trash, len)) < 0)
2006 goto return_bad_req;
2007 }
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2008 }
2009 else if (t->cli_addr.ss_family == AF_INET6) {
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]2010 /* FIXME: for the sake of completeness, we should also support
2011 * 'except' here, although it is mostly useless in this case.
2012 */
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2013 int len;
2014 char pn[INET6_ADDRSTRLEN];
2015 inet_ntop(AF_INET6,
2016 (const void *)&((struct sockaddr_in6 *)(&t->cli_addr))->sin6_addr,
2017 pn, sizeof(pn));
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2018 len = sprintf(trash, "X-Forwarded-For: %s", pn);
2019 if (unlikely(http_header_add_tail2(req, &txn->req,
2020 &txn->hdr_idx, trash, len)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2021 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2022 }
2023 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2024
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2025 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2026 * 10: add "Connection: close" if needed and not yet set.
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2027 * 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]2028 */
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2029 if (!(t->flags & SN_CONN_CLOSED) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2030 ((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE)) {
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2031 if ((unlikely(msg->sl.rq.v_l != 8) ||
2032 unlikely(req->data[msg->som + msg->sl.rq.v + 7] != '0')) &&
2033 unlikely(http_header_add_tail2(req, &txn->req, &txn->hdr_idx,
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2034 "Connection: close", 17)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2035 goto return_bad_req;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2036 t->flags |= SN_CONN_CLOSED;
Willy Tarreaue15d9132006-12-14 22:26:42 +0100[diff] [blame]2037 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2038
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2039 /*************************************************************
2040 * OK, that's finished for the headers. We have done what we *
2041 * could. Let's switch to the DATA state. *
2042 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2043
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2044 t->cli_state = CL_STDATA;
2045 req->rlim = req->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2046
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2047 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2048
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]2049 if (!tv_isset(&t->fe->clitimeout) ||
2050 (t->srv_state < SV_STDATA && tv_isset(&t->be->srvtimeout))) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2051 /* If the client has no timeout, or if the server is not ready yet,
2052 * and we know for sure that it can expire, then it's cleaner to
2053 * disable the timeout on the client side so that too low values
2054 * cannot make the sessions abort too early.
2055 *
2056 * FIXME-20050705: the server needs a way to re-enable this time-out
2057 * when it switches its state, otherwise a client can stay connected
2058 * indefinitely. This now seems to be OK.
2059 */
2060 tv_eternity(&req->rex);
2061 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2062
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2063 /* When a connection is tarpitted, we use the queue timeout for the
2064 * tarpit delay, which currently happens to be the server's connect
2065 * timeout. If unset, then set it to zero because we really want it
2066 * to expire at one moment.
2067 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2068 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2069 t->req->l = 0;
2070 /* flush the request so that we can drop the connection early
2071 * if the client closes first.
2072 */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2073 if (!tv_add_ifset(&req->cex, &now, &t->be->contimeout))
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]2074 req->cex = now;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]2075 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2076
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2077 /* OK let's go on with the BODY now */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2078 goto process_data;
2079
2080 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]2081 txn->req.msg_state = HTTP_MSG_ERROR;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2082 txn->status = 400;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2083 client_retnclose(t, error_message(t, HTTP_ERR_400));
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]2084 t->fe->failed_req++;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2085 return_prx_cond:
2086 if (!(t->flags & SN_ERR_MASK))
2087 t->flags |= SN_ERR_PRXCOND;
2088 if (!(t->flags & SN_FINST_MASK))
2089 t->flags |= SN_FINST_R;
2090 return 1;
2091
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2092 }
2093 else if (c == CL_STDATA) {
2094 process_data:
2095 /* FIXME: this error handling is partly buggy because we always report
2096 * a 'DATA' phase while we don't know if the server was in IDLE, CONN
2097 * or HEADER phase. BTW, it's not logical to expire the client while
2098 * we're waiting for the server to connect.
2099 */
2100 /* read or write error */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2101 if (rep->flags & BF_WRITE_ERROR || req->flags & BF_READ_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2102 buffer_shutr(req);
2103 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2104 fd_delete(t->cli_fd);
2105 t->cli_state = CL_STCLOSE;
2106 if (!(t->flags & SN_ERR_MASK))
2107 t->flags |= SN_ERR_CLICL;
2108 if (!(t->flags & SN_FINST_MASK)) {
2109 if (t->pend_pos)
2110 t->flags |= SN_FINST_Q;
2111 else if (s == SV_STCONN)
2112 t->flags |= SN_FINST_C;
2113 else
2114 t->flags |= SN_FINST_D;
2115 }
2116 return 1;
2117 }
2118 /* last read, or end of server write */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2119 else if (req->flags & BF_READ_NULL || s == SV_STSHUTW || s == SV_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2120 EV_FD_CLR(t->cli_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2121 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2122 t->cli_state = CL_STSHUTR;
2123 return 1;
2124 }
2125 /* last server read and buffer empty */
2126 else if ((s == SV_STSHUTR || s == SV_STCLOSE) && (rep->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2127 EV_FD_CLR(t->cli_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2128 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2129 shutdown(t->cli_fd, SHUT_WR);
2130 /* We must ensure that the read part is still alive when switching
2131 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2132 EV_FD_SET(t->cli_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2133 tv_add_ifset(&req->rex, &now, &t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2134 t->cli_state = CL_STSHUTW;
2135 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2136 return 1;
2137 }
2138 /* read timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2139 else if (tv_isle(&req->rex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2140 EV_FD_CLR(t->cli_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2141 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2142 t->cli_state = CL_STSHUTR;
2143 if (!(t->flags & SN_ERR_MASK))
2144 t->flags |= SN_ERR_CLITO;
2145 if (!(t->flags & SN_FINST_MASK)) {
2146 if (t->pend_pos)
2147 t->flags |= SN_FINST_Q;
2148 else if (s == SV_STCONN)
2149 t->flags |= SN_FINST_C;
2150 else
2151 t->flags |= SN_FINST_D;
2152 }
2153 return 1;
2154 }
2155 /* write timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2156 else if (tv_isle(&rep->wex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2157 EV_FD_CLR(t->cli_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2158 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2159 shutdown(t->cli_fd, SHUT_WR);
2160 /* We must ensure that the read part is still alive when switching
2161 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2162 EV_FD_SET(t->cli_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2163 tv_add_ifset(&req->rex, &now, &t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2164
2165 t->cli_state = CL_STSHUTW;
2166 if (!(t->flags & SN_ERR_MASK))
2167 t->flags |= SN_ERR_CLITO;
2168 if (!(t->flags & SN_FINST_MASK)) {
2169 if (t->pend_pos)
2170 t->flags |= SN_FINST_Q;
2171 else if (s == SV_STCONN)
2172 t->flags |= SN_FINST_C;
2173 else
2174 t->flags |= SN_FINST_D;
2175 }
2176 return 1;
2177 }
2178
2179 if (req->l >= req->rlim - req->data) {
2180 /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2181 if (EV_FD_COND_C(t->cli_fd, DIR_RD)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2182 /* stop reading until we get some space */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2183 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2184 }
2185 } else {
2186 /* there's still some space in the buffer */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2187 if (EV_FD_COND_S(t->cli_fd, DIR_RD)) {
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]2188 if (!tv_isset(&t->fe->clitimeout) ||
2189 (t->srv_state < SV_STDATA && tv_isset(&t->be->srvtimeout)))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2190 /* If the client has no timeout, or if the server not ready yet, and we
2191 * know for sure that it can expire, then it's cleaner to disable the
2192 * timeout on the client side so that too low values cannot make the
2193 * sessions abort too early.
2194 */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2195 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2196 else
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]2197 tv_add(&req->rex, &now, &t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2198 }
2199 }
2200
2201 if ((rep->l == 0) ||
2202 ((s < SV_STDATA) /* FIXME: this may be optimized && (rep->w == rep->h)*/)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2203 if (EV_FD_COND_C(t->cli_fd, DIR_WR)) {
2204 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2205 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2206 }
2207 } else {
2208 /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2209 if (EV_FD_COND_S(t->cli_fd, DIR_WR)) {
2210 /* restart writing */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2211 if (tv_add_ifset(&rep->wex, &now, &t->fe->clitimeout)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2212 /* FIXME: to prevent the client from expiring read timeouts during writes,
2213 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2214 req->rex = rep->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2215 }
2216 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2217 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2218 }
2219 }
2220 return 0; /* other cases change nothing */
2221 }
2222 else if (c == CL_STSHUTR) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2223 if (rep->flags & BF_WRITE_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2224 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2225 fd_delete(t->cli_fd);
2226 t->cli_state = CL_STCLOSE;
2227 if (!(t->flags & SN_ERR_MASK))
2228 t->flags |= SN_ERR_CLICL;
2229 if (!(t->flags & SN_FINST_MASK)) {
2230 if (t->pend_pos)
2231 t->flags |= SN_FINST_Q;
2232 else if (s == SV_STCONN)
2233 t->flags |= SN_FINST_C;
2234 else
2235 t->flags |= SN_FINST_D;
2236 }
2237 return 1;
2238 }
2239 else if ((s == SV_STSHUTR || s == SV_STCLOSE) && (rep->l == 0)
2240 && !(t->flags & SN_SELF_GEN)) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2241 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2242 fd_delete(t->cli_fd);
2243 t->cli_state = CL_STCLOSE;
2244 return 1;
2245 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2246 else if (tv_isle(&rep->wex, &now)) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2247 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2248 fd_delete(t->cli_fd);
2249 t->cli_state = CL_STCLOSE;
2250 if (!(t->flags & SN_ERR_MASK))
2251 t->flags |= SN_ERR_CLITO;
2252 if (!(t->flags & SN_FINST_MASK)) {
2253 if (t->pend_pos)
2254 t->flags |= SN_FINST_Q;
2255 else if (s == SV_STCONN)
2256 t->flags |= SN_FINST_C;
2257 else
2258 t->flags |= SN_FINST_D;
2259 }
2260 return 1;
2261 }
2262
2263 if (t->flags & SN_SELF_GEN) {
2264 produce_content(t);
2265 if (rep->l == 0) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2266 buffer_shutw(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2267 fd_delete(t->cli_fd);
2268 t->cli_state = CL_STCLOSE;
2269 return 1;
2270 }
2271 }
2272
2273 if ((rep->l == 0)
2274 || ((s == SV_STHEADERS) /* FIXME: this may be optimized && (rep->w == rep->h)*/)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2275 if (EV_FD_COND_C(t->cli_fd, DIR_WR)) {
2276 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2277 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2278 }
2279 } else {
2280 /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2281 if (EV_FD_COND_S(t->cli_fd, DIR_WR)) {
2282 /* restart writing */
Willy Tarreau33014d02007-06-03 15:25:37 +0200[diff] [blame]2283 if (!tv_add_ifset(&rep->wex, &now, &t->fe->clitimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2284 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2285 }
2286 }
2287 return 0;
2288 }
2289 else if (c == CL_STSHUTW) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2290 if (req->flags & BF_READ_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2291 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2292 fd_delete(t->cli_fd);
2293 t->cli_state = CL_STCLOSE;
2294 if (!(t->flags & SN_ERR_MASK))
2295 t->flags |= SN_ERR_CLICL;
2296 if (!(t->flags & SN_FINST_MASK)) {
2297 if (t->pend_pos)
2298 t->flags |= SN_FINST_Q;
2299 else if (s == SV_STCONN)
2300 t->flags |= SN_FINST_C;
2301 else
2302 t->flags |= SN_FINST_D;
2303 }
2304 return 1;
2305 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2306 else if (req->flags & BF_READ_NULL || s == SV_STSHUTW || s == SV_STCLOSE) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2307 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2308 fd_delete(t->cli_fd);
2309 t->cli_state = CL_STCLOSE;
2310 return 1;
2311 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2312 else if (tv_isle(&req->rex, &now)) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2313 buffer_shutr(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2314 fd_delete(t->cli_fd);
2315 t->cli_state = CL_STCLOSE;
2316 if (!(t->flags & SN_ERR_MASK))
2317 t->flags |= SN_ERR_CLITO;
2318 if (!(t->flags & SN_FINST_MASK)) {
2319 if (t->pend_pos)
2320 t->flags |= SN_FINST_Q;
2321 else if (s == SV_STCONN)
2322 t->flags |= SN_FINST_C;
2323 else
2324 t->flags |= SN_FINST_D;
2325 }
2326 return 1;
2327 }
2328 else if (req->l >= req->rlim - req->data) {
2329 /* no room to read more data */
2330
2331 /* FIXME-20050705: is it possible for a client to maintain a session
2332 * after the timeout by sending more data after it receives a close ?
2333 */
2334
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2335 if (EV_FD_COND_C(t->cli_fd, DIR_RD)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2336 /* stop reading until we get some space */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2337 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2338 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2339 }
2340 } else {
2341 /* there's still some space in the buffer */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2342 if (EV_FD_COND_S(t->cli_fd, DIR_RD)) {
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2343 if (!tv_add_ifset(&req->rex, &now, &t->fe->clitimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2344 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2345 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2346 }
2347 }
2348 return 0;
2349 }
2350 else { /* CL_STCLOSE: nothing to do */
2351 if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
2352 int len;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2353 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]2354 write(1, trash, len);
2355 }
2356 return 0;
2357 }
2358 return 0;
2359}
2360
2361
2362/*
2363 * manages the server FSM and its socket. It returns 1 if a state has changed
2364 * (and a resync may be needed), 0 else.
2365 */
2366int process_srv(struct session *t)
2367{
2368 int s = t->srv_state;
2369 int c = t->cli_state;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2370 struct http_txn *txn = &t->txn;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2371 struct buffer *req = t->req;
2372 struct buffer *rep = t->rep;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2373 int conn_err;
2374
2375#ifdef DEBUG_FULL
2376 fprintf(stderr,"process_srv: c=%s, s=%s\n", cli_stnames[c], srv_stnames[s]);
2377#endif
Willy Tarreauee991362007-05-14 14:37:50 +0200[diff] [blame]2378
2379#if 0
2380 fprintf(stderr,"%s:%d fe->clito=%d.%d, fe->conto=%d.%d, fe->srvto=%d.%d\n",
2381 __FUNCTION__, __LINE__,
2382 t->fe->clitimeout.tv_sec, t->fe->clitimeout.tv_usec,
2383 t->fe->contimeout.tv_sec, t->fe->contimeout.tv_usec,
2384 t->fe->srvtimeout.tv_sec, t->fe->srvtimeout.tv_usec);
2385 fprintf(stderr,"%s:%d be->clito=%d.%d, be->conto=%d.%d, be->srvto=%d.%d\n",
2386 __FUNCTION__, __LINE__,
2387 t->be->clitimeout.tv_sec, t->be->clitimeout.tv_usec,
2388 t->be->contimeout.tv_sec, t->be->contimeout.tv_usec,
2389 t->be->srvtimeout.tv_sec, t->be->srvtimeout.tv_usec);
2390
2391 fprintf(stderr,"%s:%d req->cto=%d.%d, req->rto=%d.%d, req->wto=%d.%d\n",
2392 __FUNCTION__, __LINE__,
2393 req->cto.tv_sec, req->cto.tv_usec,
2394 req->rto.tv_sec, req->rto.tv_usec,
2395 req->wto.tv_sec, req->wto.tv_usec);
2396
2397 fprintf(stderr,"%s:%d rep->cto=%d.%d, rep->rto=%d.%d, rep->wto=%d.%d\n",
2398 __FUNCTION__, __LINE__,
2399 rep->cto.tv_sec, rep->cto.tv_usec,
2400 rep->rto.tv_sec, rep->rto.tv_usec,
2401 rep->wto.tv_sec, rep->wto.tv_usec);
2402#endif
2403
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2404 //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]2405 //EV_FD_ISSET(t->cli_fd, DIR_RD), EV_FD_ISSET(t->cli_fd, DIR_WR),
2406 //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]2407 //);
2408 if (s == SV_STIDLE) {
2409 if (c == CL_STHEADERS)
2410 return 0; /* stay in idle, waiting for data to reach the client side */
2411 else if (c == CL_STCLOSE || c == CL_STSHUTW ||
2412 (c == CL_STSHUTR &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2413 (t->req->l == 0 || t->be->options & PR_O_ABRT_CLOSE))) { /* give up */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2414 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2415 if (t->pend_pos)
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2416 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2417 /* note that this must not return any error because it would be able to
2418 * overwrite the client_retnclose() output.
2419 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2420 if (txn->flags & TX_CLTARPIT)
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2421 srv_close_with_err(t, SN_ERR_CLICL, SN_FINST_T, 0, NULL);
Willy Tarreau08fa2e32006-09-03 10:47:37 +0200[diff] [blame]2422 else
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2423 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]2424
2425 return 1;
2426 }
2427 else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2428 if (txn->flags & TX_CLTARPIT) {
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2429 /* This connection is being tarpitted. The CLIENT side has
2430 * already set the connect expiration date to the right
2431 * timeout. We just have to check that it has not expired.
2432 */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2433 if (!tv_isle(&req->cex, &now))
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2434 return 0;
2435
2436 /* We will set the queue timer to the time spent, just for
2437 * logging purposes. We fake a 500 server error, so that the
2438 * attacker will not suspect his connection has been tarpitted.
2439 * It will not cause trouble to the logs because we can exclude
2440 * the tarpitted connections by filtering on the 'PT' status flags.
2441 */
2442 tv_eternity(&req->cex);
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2443 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2444 srv_close_with_err(t, SN_ERR_PRXCOND, SN_FINST_T,
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2445 500, error_message(t, HTTP_ERR_500));
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2446 return 1;
2447 }
2448
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2449 /* Right now, we will need to create a connection to the server.
2450 * We might already have tried, and got a connection pending, in
2451 * which case we will not do anything till it's pending. It's up
2452 * to any other session to release it and wake us up again.
2453 */
2454 if (t->pend_pos) {
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2455 if (!tv_isle(&req->cex, &now))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2456 return 0;
2457 else {
2458 /* we've been waiting too long here */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2459 tv_eternity(&req->cex);
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2460 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2461 srv_close_with_err(t, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2462 503, error_message(t, HTTP_ERR_503));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2463 if (t->srv)
2464 t->srv->failed_conns++;
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2465 t->fe->failed_conns++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2466 return 1;
2467 }
2468 }
2469
2470 do {
2471 /* first, get a connection */
2472 if (srv_redispatch_connect(t))
2473 return t->srv_state != SV_STIDLE;
2474
2475 /* try to (re-)connect to the server, and fail if we expire the
2476 * number of retries.
2477 */
2478 if (srv_retryable_connect(t)) {
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2479 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2480 return t->srv_state != SV_STIDLE;
2481 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2482 } while (1);
2483 }
2484 }
2485 else if (s == SV_STCONN) { /* connection in progress */
2486 if (c == CL_STCLOSE || c == CL_STSHUTW ||
2487 (c == CL_STSHUTR &&
Willy Tarreauc9b654b2007-05-08 14:46:53 +0200[diff] [blame]2488 ((t->req->l == 0 && !(req->flags & BF_WRITE_STATUS)) ||
2489 t->be->options & PR_O_ABRT_CLOSE))) { /* give up */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2490 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2491 fd_delete(t->srv_fd);
2492 if (t->srv)
2493 t->srv->cur_sess--;
2494
2495 /* note that this must not return any error because it would be able to
2496 * overwrite the client_retnclose() output.
2497 */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2498 srv_close_with_err(t, SN_ERR_CLICL, SN_FINST_C, 0, NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2499 return 1;
2500 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2501 if (!(req->flags & BF_WRITE_STATUS) && !tv_isle(&req->cex, &now)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2502 //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]2503 return 0; /* nothing changed */
2504 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2505 else if (!(req->flags & BF_WRITE_STATUS) || (req->flags & BF_WRITE_ERROR)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2506 /* timeout, asynchronous connect error or first write error */
2507 //fprintf(stderr,"2: c=%d, s=%d\n", c, s);
2508
2509 fd_delete(t->srv_fd);
2510 if (t->srv)
2511 t->srv->cur_sess--;
2512
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2513 if (!(req->flags & BF_WRITE_STATUS))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2514 conn_err = SN_ERR_SRVTO; // it was a connect timeout.
2515 else
2516 conn_err = SN_ERR_SRVCL; // it was an asynchronous connect error.
2517
2518 /* ensure that we have enough retries left */
2519 if (srv_count_retry_down(t, conn_err))
2520 return 1;
2521
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2522 if (t->srv && t->conn_retries == 0 && t->be->options & PR_O_REDISP) {
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2523 /* We're on our last chance, and the REDISP option was specified.
2524 * We will ignore cookie and force to balance or use the dispatcher.
2525 */
2526 /* let's try to offer this slot to anybody */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2527 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2528 task_wakeup(t->srv->queue_mgt);
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2529
2530 if (t->srv)
2531 t->srv->failed_conns++;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2532 t->be->failed_conns++;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2533
2534 t->flags &= ~(SN_DIRECT | SN_ASSIGNED | SN_ADDR_SET);
2535 t->srv = NULL; /* it's left to the dispatcher to choose a server */
Willy Tarreaua5e65752007-03-18 20:53:22 +0100[diff] [blame]2536 http_flush_cookie_flags(txn);
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2537
2538 /* first, get a connection */
2539 if (srv_redispatch_connect(t))
2540 return t->srv_state != SV_STIDLE;
2541 }
2542
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2543 do {
2544 /* Now we will try to either reconnect to the same server or
2545 * connect to another server. If the connection gets queued
2546 * because all servers are saturated, then we will go back to
2547 * the SV_STIDLE state.
2548 */
2549 if (srv_retryable_connect(t)) {
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2550 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2551 return t->srv_state != SV_STCONN;
2552 }
2553
2554 /* we need to redispatch the connection to another server */
2555 if (srv_redispatch_connect(t))
2556 return t->srv_state != SV_STCONN;
2557 } while (1);
2558 }
2559 else { /* no error or write 0 */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2560 t->logs.t_connect = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2561
2562 //fprintf(stderr,"3: c=%d, s=%d\n", c, s);
2563 if (req->l == 0) /* nothing to write */ {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2564 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2565 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2566 } else /* need the right to write */ {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2567 EV_FD_SET(t->srv_fd, DIR_WR);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2568 if (tv_add_ifset(&req->wex, &now, &t->be->srvtimeout)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2569 /* FIXME: to prevent the server from expiring read timeouts during writes,
2570 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2571 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2572 }
2573 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2574 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2575 }
2576
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2577 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]2578 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2579 if (!tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2580 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2581
2582 t->srv_state = SV_STDATA;
2583 if (t->srv)
2584 t->srv->cum_sess++;
2585 rep->rlim = rep->data + BUFSIZE; /* no rewrite needed */
2586
2587 /* if the user wants to log as soon as possible, without counting
2588 bytes from the server, then this is the right moment. */
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2589 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2590 t->logs.t_close = t->logs.t_connect; /* to get a valid end date */
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]2591 tcp_sess_log(t);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2592 }
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]2593#ifdef CONFIG_HAP_TCPSPLICE
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2594 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]2595 /* TCP splicing supported by both FE and BE */
2596 tcp_splice_splicefd(t->cli_fd, t->srv_fd, 0);
2597 }
2598#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2599 }
2600 else {
2601 t->srv_state = SV_STHEADERS;
2602 if (t->srv)
2603 t->srv->cum_sess++;
2604 rep->rlim = rep->data + BUFSIZE - MAXREWRITE; /* rewrite needed */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2605 t->txn.rsp.msg_state = HTTP_MSG_RPBEFORE;
2606 /* reset hdr_idx which was already initialized by the request.
2607 * right now, the http parser does it.
2608 * hdr_idx_init(&t->txn.hdr_idx);
2609 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2610 }
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2611 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2612 return 1;
2613 }
2614 }
2615 else if (s == SV_STHEADERS) { /* receiving server headers */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2616 /*
2617 * Now parse the partial (or complete) lines.
2618 * We will check the response syntax, and also join multi-line
2619 * headers. An index of all the lines will be elaborated while
2620 * parsing.
2621 *
2622 * For the parsing, we use a 28 states FSM.
2623 *
2624 * Here is the information we currently have :
2625 * rep->data + req->som = beginning of response
2626 * rep->data + req->eoh = end of processed headers / start of current one
2627 * rep->data + req->eol = end of current header or line (LF or CRLF)
2628 * rep->lr = first non-visited byte
2629 * rep->r = end of data
2630 */
2631
2632 int cur_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2633 struct http_msg *msg = &txn->rsp;
2634 struct proxy *cur_proxy;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2635
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2636 if (likely(rep->lr < rep->r))
2637 http_msg_analyzer(rep, msg, &txn->hdr_idx);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2638
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2639 /* 1: we might have to print this header in debug mode */
2640 if (unlikely((global.mode & MODE_DEBUG) &&
2641 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
2642 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
2643 char *eol, *sol;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2644
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2645 sol = rep->data + msg->som;
2646 eol = sol + msg->sl.rq.l;
2647 debug_hdr("srvrep", t, sol, eol);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2648
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2649 sol += hdr_idx_first_pos(&txn->hdr_idx);
2650 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2651
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2652 while (cur_idx) {
2653 eol = sol + txn->hdr_idx.v[cur_idx].len;
2654 debug_hdr("srvhdr", t, sol, eol);
2655 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2656 cur_idx = txn->hdr_idx.v[cur_idx].next;
2657 }
2658 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2659
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2660
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2661 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]2662 /* fd in DIR_RD was disabled, perhaps because of a previous buffer
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2663 * full. We cannot loop here since stream_sock_read will disable it only if
2664 * rep->l == rlim-data
2665 */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2666 if (!tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2667 tv_eternity(&rep->rex);
2668 }
2669
2670
2671 /*
2672 * Now we quickly check if we have found a full valid response.
2673 * If not so, we check the FD and buffer states before leaving.
2674 * A full response is indicated by the fact that we have seen
2675 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
2676 * responses are checked first.
2677 *
2678 * Depending on whether the client is still there or not, we
2679 * may send an error response back or not. Note that normally
2680 * we should only check for HTTP status there, and check I/O
2681 * errors somewhere else.
2682 */
2683
2684 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
2685
2686 /* Invalid response, or read error or write error */
2687 if (unlikely((msg->msg_state == HTTP_MSG_ERROR) ||
2688 (req->flags & BF_WRITE_ERROR) ||
2689 (rep->flags & BF_READ_ERROR))) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2690 buffer_shutr(rep);
2691 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2692 fd_delete(t->srv_fd);
2693 if (t->srv) {
2694 t->srv->cur_sess--;
2695 t->srv->failed_resp++;
2696 }
2697 t->be->failed_resp++;
2698 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2699 txn->status = 502;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2700 client_return(t, error_message(t, HTTP_ERR_502));
2701 if (!(t->flags & SN_ERR_MASK))
2702 t->flags |= SN_ERR_SRVCL;
2703 if (!(t->flags & SN_FINST_MASK))
2704 t->flags |= SN_FINST_H;
2705 /* We used to have a free connection slot. Since we'll never use it,
2706 * we have to inform the server that it may be used by another session.
2707 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2708 if (t->srv && may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2709 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2710
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2711 return 1;
2712 }
2713
2714 /* end of client write or end of server read.
2715 * since we are in header mode, if there's no space left for headers, we
2716 * won't be able to free more later, so the session will never terminate.
2717 */
2718 else if (unlikely(rep->flags & BF_READ_NULL ||
2719 c == CL_STSHUTW || c == CL_STCLOSE ||
2720 rep->l >= rep->rlim - rep->data)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2721 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2722 buffer_shutr(rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2723 t->srv_state = SV_STSHUTR;
2724 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2725 return 1;
2726 }
2727
2728 /* read timeout : return a 504 to the client.
2729 */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2730 else if (unlikely(EV_FD_ISSET(t->srv_fd, DIR_RD) &&
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2731 tv_isle(&rep->rex, &now))) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2732 buffer_shutr(rep);
2733 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2734 fd_delete(t->srv_fd);
2735 if (t->srv) {
2736 t->srv->cur_sess--;
2737 t->srv->failed_resp++;
2738 }
2739 t->be->failed_resp++;
2740 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2741 txn->status = 504;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2742 client_return(t, error_message(t, HTTP_ERR_504));
2743 if (!(t->flags & SN_ERR_MASK))
2744 t->flags |= SN_ERR_SRVTO;
2745 if (!(t->flags & SN_FINST_MASK))
2746 t->flags |= SN_FINST_H;
2747 /* We used to have a free connection slot. Since we'll never use it,
2748 * we have to inform the server that it may be used by another session.
2749 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2750 if (t->srv && may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2751 task_wakeup(t->srv->queue_mgt);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2752 return 1;
2753 }
2754
2755 /* last client read and buffer empty */
2756 /* FIXME!!! here, we don't want to switch to SHUTW if the
2757 * client shuts read too early, because we may still have
2758 * some work to do on the headers.
2759 * The side-effect is that if the client completely closes its
2760 * connection during SV_STHEADER, the connection to the server
2761 * is kept until a response comes back or the timeout is reached.
2762 */
2763 else if (unlikely((/*c == CL_STSHUTR ||*/ c == CL_STCLOSE) &&
2764 (req->l == 0))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2765 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2766 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2767
2768 /* We must ensure that the read part is still
2769 * alive when switching to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2770 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2771 tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2772
2773 shutdown(t->srv_fd, SHUT_WR);
2774 t->srv_state = SV_STSHUTW;
2775 return 1;
2776 }
2777
2778 /* write timeout */
2779 /* FIXME!!! here, we don't want to switch to SHUTW if the
2780 * client shuts read too early, because we may still have
2781 * some work to do on the headers.
2782 */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2783 else if (unlikely(EV_FD_ISSET(t->srv_fd, DIR_WR) &&
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2784 tv_isle(&req->wex, &now))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2785 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2786 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2787 shutdown(t->srv_fd, SHUT_WR);
2788 /* We must ensure that the read part is still alive
2789 * when switching to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2790 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2791 tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2792
2793 t->srv_state = SV_STSHUTW;
2794 if (!(t->flags & SN_ERR_MASK))
2795 t->flags |= SN_ERR_SRVTO;
2796 if (!(t->flags & SN_FINST_MASK))
2797 t->flags |= SN_FINST_H;
2798 return 1;
2799 }
2800
2801 /*
2802 * And now the non-error cases.
2803 */
2804
2805 /* Data remaining in the request buffer.
2806 * This happens during the first pass here, and during
2807 * long posts.
2808 */
2809 else if (likely(req->l)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2810 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
2811 /* restart writing */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]2812 if (tv_add_ifset(&req->wex, &now, &t->be->srvtimeout)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2813 /* FIXME: to prevent the server from expiring read timeouts during writes,
2814 * we refresh it. */
2815 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2816 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2817 else
2818 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2819 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2820 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2821
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2822 /* nothing left in the request buffer */
2823 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2824 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
2825 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2826 tv_eternity(&req->wex);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2827 }
2828 }
2829
2830 return t->srv_state != SV_STHEADERS;
2831 }
2832
2833
2834 /*****************************************************************
2835 * More interesting part now : we know that we have a complete *
2836 * response which at least looks like HTTP. We have an indicator *
2837 * of each header's length, so we can parse them quickly. *
2838 ****************************************************************/
2839
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2840 /* ensure we keep this pointer to the beginning of the message */
2841 msg->sol = rep->data + msg->som;
2842
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2843 /*
2844 * 1: get the status code and check for cacheability.
2845 */
2846
2847 t->logs.logwait &= ~LW_RESP;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2848 txn->status = strl2ui(rep->data + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2849
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2850 switch (txn->status) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2851 case 200:
2852 case 203:
2853 case 206:
2854 case 300:
2855 case 301:
2856 case 410:
2857 /* RFC2616 @13.4:
2858 * "A response received with a status code of
2859 * 200, 203, 206, 300, 301 or 410 MAY be stored
2860 * by a cache (...) unless a cache-control
2861 * directive prohibits caching."
2862 *
2863 * RFC2616 @9.5: POST method :
2864 * "Responses to this method are not cacheable,
2865 * unless the response includes appropriate
2866 * Cache-Control or Expires header fields."
2867 */
2868 if (likely(txn->meth != HTTP_METH_POST) &&
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame^]2869 (t->be->options & (PR_O_CHK_CACHE|PR_O_COOK_NOC)))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2870 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2871 break;
2872 default:
2873 break;
2874 }
2875
2876 /*
2877 * 2: we may need to capture headers
2878 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2879 if (unlikely((t->logs.logwait & LW_RSPHDR) && t->fe->rsp_cap))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2880 capture_headers(rep->data + msg->som, &txn->hdr_idx,
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2881 txn->rsp.cap, t->fe->rsp_cap);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2882
2883 /*
2884 * 3: we will have to evaluate the filters.
2885 * As opposed to version 1.2, now they will be evaluated in the
2886 * filters order and not in the header order. This means that
2887 * each filter has to be validated among all headers.
2888 *
2889 * Filters are tried with ->be first, then with ->fe if it is
2890 * different from ->be.
2891 */
2892
2893 t->flags &= ~SN_CONN_CLOSED; /* prepare for inspection */
2894
2895 cur_proxy = t->be;
2896 while (1) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2897 struct proxy *rule_set = cur_proxy;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2898
2899 /* try headers filters */
2900 if (rule_set->rsp_exp != NULL) {
2901 if (apply_filters_to_response(t, rep, rule_set->rsp_exp) < 0) {
2902 return_bad_resp:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2903 if (t->srv) {
2904 t->srv->cur_sess--;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2905 t->srv->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2906 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2907 cur_proxy->failed_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2908 return_srv_prx_502:
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]2909 buffer_shutr(rep);
2910 buffer_shutw(req);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2911 fd_delete(t->srv_fd);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2912 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2913 txn->status = 502;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2914 client_return(t, error_message(t, HTTP_ERR_502));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2915 if (!(t->flags & SN_ERR_MASK))
2916 t->flags |= SN_ERR_PRXCOND;
2917 if (!(t->flags & SN_FINST_MASK))
2918 t->flags |= SN_FINST_H;
2919 /* We used to have a free connection slot. Since we'll never use it,
2920 * we have to inform the server that it may be used by another session.
2921 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2922 if (t->srv && may_dequeue_tasks(t->srv, cur_proxy))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2923 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2924 return 1;
2925 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2926 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2927
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2928 /* has the response been denied ? */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2929 if (txn->flags & TX_SVDENY) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2930 if (t->srv) {
2931 t->srv->cur_sess--;
2932 t->srv->failed_secu++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2933 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2934 cur_proxy->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2935 goto return_srv_prx_502;
2936 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2937
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2938 /* We might have to check for "Connection:" */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2939 if (((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2940 !(t->flags & SN_CONN_CLOSED)) {
2941 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2942 int cur_idx, old_idx, delta, val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2943 struct hdr_idx_elem *cur_hdr;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2944
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2945 cur_next = rep->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
2946 old_idx = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2947
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2948 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
2949 cur_hdr = &txn->hdr_idx.v[cur_idx];
2950 cur_ptr = cur_next;
2951 cur_end = cur_ptr + cur_hdr->len;
2952 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2953
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2954 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
2955 if (val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2956 /* 3 possibilities :
2957 * - we have already set Connection: close,
2958 * so we remove this line.
2959 * - we have not yet set Connection: close,
2960 * but this line indicates close. We leave
2961 * it untouched and set the flag.
2962 * - we have not yet set Connection: close,
2963 * and this line indicates non-close. We
2964 * replace it.
2965 */
2966 if (t->flags & SN_CONN_CLOSED) {
2967 delta = buffer_replace2(rep, cur_ptr, cur_next, NULL, 0);
2968 txn->rsp.eoh += delta;
2969 cur_next += delta;
2970 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
2971 txn->hdr_idx.used--;
2972 cur_hdr->len = 0;
2973 } else {
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2974 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
2975 delta = buffer_replace2(rep, cur_ptr + val, cur_end,
2976 "close", 5);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2977 cur_next += delta;
2978 cur_hdr->len += delta;
2979 txn->rsp.eoh += delta;
2980 }
2981 t->flags |= SN_CONN_CLOSED;
2982 }
2983 }
2984 old_idx = cur_idx;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2985 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2986 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2987
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2988 /* add response headers from the rule sets in the same order */
2989 for (cur_idx = 0; cur_idx < rule_set->nb_rspadd; cur_idx++) {
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2990 if (unlikely(http_header_add_tail(rep, &txn->rsp, &txn->hdr_idx,
2991 rule_set->rsp_add[cur_idx])) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2992 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2993 }
2994
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2995 /* check whether we're already working on the frontend */
2996 if (cur_proxy == t->fe)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2997 break;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2998 cur_proxy = t->fe;
2999 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3000
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3001 /*
3002 * 4: check for server cookie.
3003 */
3004 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3005
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame^]3006
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3007 /*
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame^]3008 * 5: check for cache-control or pragma headers.
3009 */
3010 check_response_for_cacheability(t, rep);
3011
3012
3013 /*
3014 * 6: add server cookie in the response if needed
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3015 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3016 if ((t->srv) && !(t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_INS) &&
3017 (!(t->be->options & PR_O_COOK_POST) || (txn->meth == HTTP_METH_POST))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3018 int len;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3019
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3020 /* the server is known, it's not the one the client requested, we have to
3021 * insert a set-cookie here, except if we want to insert only on POST
3022 * requests and this one isn't. Note that servers which don't have cookies
3023 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3024 */
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3025 len = sprintf(trash, "Set-Cookie: %s=%s; path=/",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3026 t->be->cookie_name,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3027 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]3028
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3029 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3030 trash, len)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3031 goto return_bad_resp;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3032 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3033
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3034 /* Here, we will tell an eventual cache on the client side that we don't
3035 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
3036 * Some caches understand the correct form: 'no-cache="set-cookie"', but
3037 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
3038 */
Krzysztof Oledzki9198ab52007-10-11 18:56:27 +0200[diff] [blame^]3039 if ((t->be->options & PR_O_COOK_NOC) && (txn->flags & TX_CACHEABLE)) {
3040
3041 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
3042
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3043 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
3044 "Cache-control: private", 22)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3045 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3046 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3047 }
3048
3049
3050 /*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3051 * 7: check if result will be cacheable with a cookie.
3052 * We'll block the response if security checks have caught
3053 * nasty things such as a cacheable cookie.
3054 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3055 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) ==
3056 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3057 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3058
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3059 /* we're in presence of a cacheable response containing
3060 * a set-cookie header. We'll block it as requested by
3061 * the 'checkcache' option, and send an alert.
3062 */
3063 if (t->srv) {
3064 t->srv->cur_sess--;
3065 t->srv->failed_secu++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3066 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3067 t->be->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3068
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3069 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3070 t->be->id, t->srv?t->srv->id:"<dispatch>");
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3071 send_log(t->be, LOG_ALERT,
3072 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3073 t->be->id, t->srv?t->srv->id:"<dispatch>");
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3074 goto return_srv_prx_502;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3075 }
3076
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3077 /*
3078 * 8: add "Connection: close" if needed and not yet set.
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]3079 * 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]3080 */
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]3081 if (!(t->flags & SN_CONN_CLOSED) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3082 ((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE)) {
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]3083 if ((unlikely(msg->sl.st.v_l != 8) ||
3084 unlikely(req->data[msg->som + 7] != '0')) &&
3085 unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]3086 "Connection: close", 17)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3087 goto return_bad_resp;
3088 t->flags |= SN_CONN_CLOSED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3089 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3090
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3091
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3092 /*************************************************************
3093 * OK, that's finished for the headers. We have done what we *
3094 * could. Let's switch to the DATA state. *
3095 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3096
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3097 t->srv_state = SV_STDATA;
3098 rep->rlim = rep->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]3099 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3100
3101 /* client connection already closed or option 'forceclose' required :
3102 * we close the server's outgoing connection right now.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3103 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3104 if ((req->l == 0) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3105 (c == CL_STSHUTR || c == CL_STCLOSE || t->be->options & PR_O_FORCE_CLO)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3106 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3107 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3108
3109 /* We must ensure that the read part is still alive when switching
3110 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3111 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3112 tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3113
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3114 shutdown(t->srv_fd, SHUT_WR);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3115 t->srv_state = SV_STSHUTW;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3116 }
3117
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3118#ifdef CONFIG_HAP_TCPSPLICE
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3119 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3120 /* TCP splicing supported by both FE and BE */
3121 tcp_splice_splicefd(t->cli_fd, t->srv_fd, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3122 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3123#endif
3124 /* if the user wants to log as soon as possible, without counting
3125 bytes from the server, then this is the right moment. */
3126 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
3127 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
Willy Tarreaub4987172007-03-18 16:28:03 +0100[diff] [blame]3128 t->logs.bytes_in = txn->rsp.eoh;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]3129 if (t->fe->to_log & LW_REQ)
3130 http_sess_log(t);
3131 else
3132 tcp_sess_log(t);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3133 }
3134
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3135 /* Note: we must not try to cheat by jumping directly to DATA,
3136 * otherwise we would not let the client side wake up.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3137 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3138
3139 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3140 }
3141 else if (s == SV_STDATA) {
3142 /* read or write error */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3143 if (req->flags & BF_WRITE_ERROR || rep->flags & BF_READ_ERROR) {
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3144 buffer_shutr(rep);
3145 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3146 fd_delete(t->srv_fd);
3147 if (t->srv) {
3148 t->srv->cur_sess--;
3149 t->srv->failed_resp++;
3150 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3151 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3152 t->srv_state = SV_STCLOSE;
3153 if (!(t->flags & SN_ERR_MASK))
3154 t->flags |= SN_ERR_SRVCL;
3155 if (!(t->flags & SN_FINST_MASK))
3156 t->flags |= SN_FINST_D;
3157 /* We used to have a free connection slot. Since we'll never use it,
3158 * we have to inform the server that it may be used by another session.
3159 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3160 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3161 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3162
3163 return 1;
3164 }
3165 /* last read, or end of client write */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3166 else if (rep->flags & BF_READ_NULL || c == CL_STSHUTW || c == CL_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3167 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3168 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3169 t->srv_state = SV_STSHUTR;
3170 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
3171 return 1;
3172 }
3173 /* end of client read and no more data to send */
3174 else if ((c == CL_STSHUTR || c == CL_STCLOSE) && (req->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3175 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3176 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3177 shutdown(t->srv_fd, SHUT_WR);
3178 /* We must ensure that the read part is still alive when switching
3179 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3180 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3181 tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3182
3183 t->srv_state = SV_STSHUTW;
3184 return 1;
3185 }
3186 /* read timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3187 else if (tv_isle(&rep->rex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3188 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3189 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3190 t->srv_state = SV_STSHUTR;
3191 if (!(t->flags & SN_ERR_MASK))
3192 t->flags |= SN_ERR_SRVTO;
3193 if (!(t->flags & SN_FINST_MASK))
3194 t->flags |= SN_FINST_D;
3195 return 1;
3196 }
3197 /* write timeout */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3198 else if (tv_isle(&req->wex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3199 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3200 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3201 shutdown(t->srv_fd, SHUT_WR);
3202 /* We must ensure that the read part is still alive when switching
3203 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3204 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3205 tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3206 t->srv_state = SV_STSHUTW;
3207 if (!(t->flags & SN_ERR_MASK))
3208 t->flags |= SN_ERR_SRVTO;
3209 if (!(t->flags & SN_FINST_MASK))
3210 t->flags |= SN_FINST_D;
3211 return 1;
3212 }
3213
3214 /* recompute request time-outs */
3215 if (req->l == 0) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3216 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
3217 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3218 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3219 }
3220 }
3221 else { /* buffer not empty, there are still data to be transferred */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3222 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
3223 /* restart writing */
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3224 if (tv_add_ifset(&req->wex, &now, &t->be->srvtimeout)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3225 /* FIXME: to prevent the server from expiring read timeouts during writes,
3226 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3227 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3228 }
3229 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3230 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3231 }
3232 }
3233
3234 /* recompute response time-outs */
3235 if (rep->l == BUFSIZE) { /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3236 if (EV_FD_COND_C(t->srv_fd, DIR_RD)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3237 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3238 }
3239 }
3240 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3241 if (EV_FD_COND_S(t->srv_fd, DIR_RD)) {
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3242 if (!tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3243 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3244 }
3245 }
3246
3247 return 0; /* other cases change nothing */
3248 }
3249 else if (s == SV_STSHUTR) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3250 if (req->flags & BF_WRITE_ERROR) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3251 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3252 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3253 fd_delete(t->srv_fd);
3254 if (t->srv) {
3255 t->srv->cur_sess--;
3256 t->srv->failed_resp++;
3257 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3258 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3259 //close(t->srv_fd);
3260 t->srv_state = SV_STCLOSE;
3261 if (!(t->flags & SN_ERR_MASK))
3262 t->flags |= SN_ERR_SRVCL;
3263 if (!(t->flags & SN_FINST_MASK))
3264 t->flags |= SN_FINST_D;
3265 /* We used to have a free connection slot. Since we'll never use it,
3266 * we have to inform the server that it may be used by another session.
3267 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3268 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3269 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3270
3271 return 1;
3272 }
3273 else if ((c == CL_STSHUTR || c == CL_STCLOSE) && (req->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3274 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3275 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3276 fd_delete(t->srv_fd);
3277 if (t->srv)
3278 t->srv->cur_sess--;
3279 //close(t->srv_fd);
3280 t->srv_state = SV_STCLOSE;
3281 /* We used to have a free connection slot. Since we'll never use it,
3282 * we have to inform the server that it may be used by another session.
3283 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3284 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3285 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3286
3287 return 1;
3288 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3289 else if (tv_isle(&req->wex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3290 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3291 buffer_shutw(req);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3292 fd_delete(t->srv_fd);
3293 if (t->srv)
3294 t->srv->cur_sess--;
3295 //close(t->srv_fd);
3296 t->srv_state = SV_STCLOSE;
3297 if (!(t->flags & SN_ERR_MASK))
3298 t->flags |= SN_ERR_SRVTO;
3299 if (!(t->flags & SN_FINST_MASK))
3300 t->flags |= SN_FINST_D;
3301 /* We used to have a free connection slot. Since we'll never use it,
3302 * we have to inform the server that it may be used by another session.
3303 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3304 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3305 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3306
3307 return 1;
3308 }
3309 else if (req->l == 0) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3310 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
3311 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3312 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3313 }
3314 }
3315 else { /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3316 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
3317 /* restart writing */
Willy Tarreau33014d02007-06-03 15:25:37 +0200[diff] [blame]3318 if (!tv_add_ifset(&req->wex, &now, &t->be->srvtimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3319 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3320 }
3321 }
3322 return 0;
3323 }
3324 else if (s == SV_STSHUTW) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3325 if (rep->flags & BF_READ_ERROR) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3326 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3327 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3328 fd_delete(t->srv_fd);
3329 if (t->srv) {
3330 t->srv->cur_sess--;
3331 t->srv->failed_resp++;
3332 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3333 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3334 //close(t->srv_fd);
3335 t->srv_state = SV_STCLOSE;
3336 if (!(t->flags & SN_ERR_MASK))
3337 t->flags |= SN_ERR_SRVCL;
3338 if (!(t->flags & SN_FINST_MASK))
3339 t->flags |= SN_FINST_D;
3340 /* We used to have a free connection slot. Since we'll never use it,
3341 * we have to inform the server that it may be used by another session.
3342 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3343 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3344 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3345
3346 return 1;
3347 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3348 else if (rep->flags & BF_READ_NULL || c == CL_STSHUTW || c == CL_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3349 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3350 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3351 fd_delete(t->srv_fd);
3352 if (t->srv)
3353 t->srv->cur_sess--;
3354 //close(t->srv_fd);
3355 t->srv_state = SV_STCLOSE;
3356 /* We used to have a free connection slot. Since we'll never use it,
3357 * we have to inform the server that it may be used by another session.
3358 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3359 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3360 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3361
3362 return 1;
3363 }
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3364 else if (tv_isle(&rep->rex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3365 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaufa645582007-06-03 15:59:52 +0200[diff] [blame]3366 buffer_shutr(rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3367 fd_delete(t->srv_fd);
3368 if (t->srv)
3369 t->srv->cur_sess--;
3370 //close(t->srv_fd);
3371 t->srv_state = SV_STCLOSE;
3372 if (!(t->flags & SN_ERR_MASK))
3373 t->flags |= SN_ERR_SRVTO;
3374 if (!(t->flags & SN_FINST_MASK))
3375 t->flags |= SN_FINST_D;
3376 /* We used to have a free connection slot. Since we'll never use it,
3377 * we have to inform the server that it may be used by another session.
3378 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3379 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3380 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3381
3382 return 1;
3383 }
3384 else if (rep->l == BUFSIZE) { /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3385 if (EV_FD_COND_C(t->srv_fd, DIR_RD)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3386 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3387 }
3388 }
3389 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3390 if (EV_FD_COND_S(t->srv_fd, DIR_RD)) {
Willy Tarreaua8b55e32007-05-13 16:08:19 +0200[diff] [blame]3391 if (!tv_add_ifset(&rep->rex, &now, &t->be->srvtimeout))
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3392 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3393 }
3394 }
3395 return 0;
3396 }
3397 else { /* SV_STCLOSE : nothing to do */
3398 if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
3399 int len;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3400 len = sprintf(trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3401 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]3402 write(1, trash, len);
3403 }
3404 return 0;
3405 }
3406 return 0;
3407}
3408
3409
3410/*
3411 * Produces data for the session <s> depending on its source. Expects to be
3412 * called with s->cli_state == CL_STSHUTR. Right now, only statistics can be
3413 * produced. It stops by itself by unsetting the SN_SELF_GEN flag from the
3414 * session, which it uses to keep on being called when there is free space in
3415 * the buffer, of simply by letting an empty buffer upon return. It returns 1
3416 * if it changes the session state from CL_STSHUTR, otherwise 0.
3417 */
3418int produce_content(struct session *s)
3419{
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3420 if (s->data_source == DATA_SRC_NONE) {
3421 s->flags &= ~SN_SELF_GEN;
3422 return 1;
3423 }
3424 else if (s->data_source == DATA_SRC_STATS) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3425 /* dump server statistics */
3426 return produce_content_stats(s);
3427 }
3428 else {
3429 /* unknown data source */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3430 s->txn.status = 500;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3431 client_retnclose(s, error_message(s, HTTP_ERR_500));
3432 if (!(s->flags & SN_ERR_MASK))
3433 s->flags |= SN_ERR_PRXCOND;
3434 if (!(s->flags & SN_FINST_MASK))
3435 s->flags |= SN_FINST_R;
3436 s->flags &= ~SN_SELF_GEN;
3437 return 1;
3438 }
3439}
3440
3441
3442/*
3443 * Produces statistics data for the session <s>. Expects to be called with
3444 * s->cli_state == CL_STSHUTR. It stops by itself by unsetting the SN_SELF_GEN
3445 * flag from the session, which it uses to keep on being called when there is
3446 * free space in the buffer, of simply by letting an empty buffer upon return.
3447 * It returns 1 if it changes the session state from CL_STSHUTR, otherwise 0.
3448 */
3449int produce_content_stats(struct session *s)
3450{
3451 struct buffer *rep = s->rep;
3452 struct proxy *px;
3453 struct chunk msg;
3454 unsigned int up;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3455
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3456 msg.len = 0;
3457 msg.str = trash;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3458
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3459 switch (s->data_state) {
3460 case DATA_ST_INIT:
3461 /* the function had not been called yet */
3462 s->flags |= SN_SELF_GEN; // more data will follow
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3463
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3464 chunk_printf(&msg, sizeof(trash),
3465 "HTTP/1.0 200 OK\r\n"
3466 "Cache-Control: no-cache\r\n"
3467 "Connection: close\r\n"
Willy Tarreaubbd42122007-07-25 07:26:38 +0200[diff] [blame]3468 "Content-Type: text/html\r\n");
3469
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]3470 if (s->be->uri_auth->refresh > 0 && !(s->flags & SN_STAT_NORFRSH))
Willy Tarreaubbd42122007-07-25 07:26:38 +0200[diff] [blame]3471 chunk_printf(&msg, sizeof(trash), "Refresh: %d\r\n",
3472 s->be->uri_auth->refresh);
3473
3474 chunk_printf(&msg, sizeof(trash), "\r\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3475
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3476 s->txn.status = 200;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3477 client_retnclose(s, &msg); // send the start of the response.
3478 msg.len = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3479
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3480 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
3481 s->flags |= SN_ERR_PRXCOND; // to mark that it comes from the proxy
3482 if (!(s->flags & SN_FINST_MASK))
3483 s->flags |= SN_FINST_R;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3484
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]3485 if (s->txn.meth == HTTP_METH_HEAD) {
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]3486 /* that's all we return in case of HEAD request */
3487 s->data_state = DATA_ST_FIN;
3488 s->flags &= ~SN_SELF_GEN;
3489 return 1;
3490 }
3491
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3492 s->data_state = DATA_ST_HEAD; /* let's start producing data */
3493 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3494
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3495 case DATA_ST_HEAD:
3496 /* WARNING! This must fit in the first buffer !!! */
3497 chunk_printf(&msg, sizeof(trash),
3498 "<html><head><title>Statistics Report for " PRODUCT_NAME "</title>\n"
3499 "<meta http-equiv=\"content-type\" content=\"text/html; charset=iso-8859-1\">\n"
3500 "<style type=\"text/css\"><!--\n"
3501 "body {"
3502 " font-family: helvetica, arial;"
3503 " font-size: 12px;"
3504 " font-weight: normal;"
3505 " color: black;"
3506 " background: white;"
3507 "}\n"
3508 "th,td {"
3509 " font-size: 0.8em;"
3510 " align: center;"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3511 "}\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3512 "h1 {"
3513 " font-size: xx-large;"
3514 " margin-bottom: 0.5em;"
3515 "}\n"
3516 "h2 {"
3517 " font-family: helvetica, arial;"
3518 " font-size: x-large;"
3519 " font-weight: bold;"
3520 " font-style: italic;"
3521 " color: #6020a0;"
3522 " margin-top: 0em;"
3523 " margin-bottom: 0em;"
3524 "}\n"
3525 "h3 {"
3526 " font-family: helvetica, arial;"
3527 " font-size: 16px;"
3528 " font-weight: bold;"
3529 " color: #b00040;"
3530 " background: #e8e8d0;"
3531 " margin-top: 0em;"
3532 " margin-bottom: 0em;"
3533 "}\n"
3534 "li {"
3535 " margin-top: 0.25em;"
3536 " margin-right: 2em;"
3537 "}\n"
3538 ".hr {margin-top: 0.25em;"
3539 " border-color: black;"
3540 " border-bottom-style: solid;"
3541 "}\n"
3542 ".pxname {background: #b00040;color: #ffff40;font-weight: bold;}\n"
3543 ".titre {background: #20D0D0;color: #000000;font-weight: bold;}\n"
3544 ".total {background: #20D0D0;color: #ffff80;}\n"
3545 ".frontend {background: #e8e8d0;}\n"
3546 ".backend {background: #e8e8d0;}\n"
3547 ".active0 {background: #ff9090;}\n"
3548 ".active1 {background: #ffd020;}\n"
3549 ".active2 {background: #ffffa0;}\n"
3550 ".active3 {background: #c0ffc0;}\n"
3551 ".active4 {background: #e0e0e0;}\n"
3552 ".backup0 {background: #ff9090;}\n"
3553 ".backup1 {background: #ff80ff;}\n"
3554 ".backup2 {background: #c060ff;}\n"
3555 ".backup3 {background: #b0d0ff;}\n"
3556 ".backup4 {background: #e0e0e0;}\n"
3557 "table.tbl { border-collapse: collapse; border-style: none;}\n"
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3558 "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]3559 "table.tbl th { border-width: 1px; border-style: solid solid solid solid; border-color: gray;}\n"
3560 "table.tbl th.empty { border-style: none; empty-cells: hide;}\n"
3561 "table.lgd { border-collapse: collapse; border-width: 1px; border-style: none none none solid; border-color: black;}\n"
3562 "table.lgd td { border-width: 1px; border-style: solid solid solid solid; border-color: gray; padding: 2px;}\n"
3563 "table.lgd td.noborder { border-style: none; padding: 2px; white-space: nowrap;}\n"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3564 "-->\n"
3565 "</style></head>\n");
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3566
3567 if (buffer_write_chunk(rep, &msg) != 0)
3568 return 0;
3569
3570 s->data_state = DATA_ST_INFO;
3571 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3572
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3573 case DATA_ST_INFO:
3574 up = (now.tv_sec - start_date.tv_sec);
3575
3576 /* WARNING! this has to fit the first packet too.
3577 * We are around 3.5 kB, add adding entries will
3578 * become tricky if we want to support 4kB buffers !
3579 */
3580 chunk_printf(&msg, sizeof(trash),
3581 "<body><h1><a href=\"" PRODUCT_URL "\" style=\"text-decoration: none;\">"
3582 PRODUCT_NAME "</a></h1>\n"
3583 "<h2>Statistics Report for pid %d</h2>\n"
3584 "<hr width=\"100%%\" class=\"hr\">\n"
3585 "<h3>&gt; General process information</h3>\n"
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]3586 "<table border=0 cols=4><tr><td align=\"left\" nowrap width=\"1%%\">\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3587 "<p><b>pid = </b> %d (nbproc = %d)<br>\n"
3588 "<b>uptime = </b> %dd %dh%02dm%02ds<br>\n"
3589 "<b>system limits :</b> memmax = %s%s ; ulimit-n = %d<br>\n"
3590 "<b>maxsock = </b> %d<br>\n"
3591 "<b>maxconn = </b> %d (current conns = %d)<br>\n"
3592 "</td><td align=\"center\" nowrap>\n"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3593 "<table class=\"lgd\"><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3594 "<td class=\"active3\">&nbsp;</td><td class=\"noborder\">active UP </td>"
3595 "<td class=\"backup3\">&nbsp;</td><td class=\"noborder\">backup UP </td>"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3596 "</tr><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3597 "<td class=\"active2\"></td><td class=\"noborder\">active UP, going down </td>"
3598 "<td class=\"backup2\"></td><td class=\"noborder\">backup UP, going down </td>"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3599 "</tr><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3600 "<td class=\"active1\"></td><td class=\"noborder\">active DOWN, going up </td>"
3601 "<td class=\"backup1\"></td><td class=\"noborder\">backup DOWN, going up </td>"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3602 "</tr><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3603 "<td class=\"active0\"></td><td class=\"noborder\">active or backup DOWN &nbsp;</td>"
3604 "<td class=\"active4\"></td><td class=\"noborder\">not checked </td>"
3605 "</tr></table>\n"
3606 "</td>"
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]3607 "<td align=\"left\" valign=\"top\" nowrap width=\"1%%\">"
3608 "<b>Display option:</b><ul style=\"margin-top: 0.25em;\">"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3609 "",
3610 pid, pid, global.nbproc,
3611 up / 86400, (up % 86400) / 3600,
3612 (up % 3600) / 60, (up % 60),
3613 global.rlimit_memmax ? ultoa(global.rlimit_memmax) : "unlimited",
3614 global.rlimit_memmax ? " MB" : "",
3615 global.rlimit_nofile,
3616 global.maxsock,
3617 global.maxconn,
3618 actconn
3619 );
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3620
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]3621 if (s->flags & SN_STAT_HIDEDWN)
3622 chunk_printf(&msg, sizeof(trash),
3623 "<li><a href=\"%s%s%s\">Show all servers</a><br>\n",
3624 s->be->uri_auth->uri_prefix,
3625 "",
3626 (s->flags & SN_STAT_NORFRSH) ? ";norefresh" : "");
3627 else
3628 chunk_printf(&msg, sizeof(trash),
3629 "<li><a href=\"%s%s%s\">Hide 'DOWN' servers</a><br>\n",
3630 s->be->uri_auth->uri_prefix,
3631 ";up",
3632 (s->flags & SN_STAT_NORFRSH) ? ";norefresh" : "");
3633
3634 if (s->be->uri_auth->refresh > 0) {
3635 if (s->flags & SN_STAT_NORFRSH)
3636 chunk_printf(&msg, sizeof(trash),
3637 "<li><a href=\"%s%s%s\">Enable refresh</a><br>\n",
3638 s->be->uri_auth->uri_prefix,
3639 (s->flags & SN_STAT_HIDEDWN) ? ";up" : "",
3640 "");
3641 else
3642 chunk_printf(&msg, sizeof(trash),
3643 "<li><a href=\"%s%s%s\">Disable refresh</a><br>\n",
3644 s->be->uri_auth->uri_prefix,
3645 (s->flags & SN_STAT_HIDEDWN) ? ";up" : "",
3646 ";norefresh");
3647 }
3648
3649 chunk_printf(&msg, sizeof(trash),
3650 "<li><a href=\"%s%s%s\">Refresh now</a><br>\n",
3651 s->be->uri_auth->uri_prefix,
3652 (s->flags & SN_STAT_HIDEDWN) ? ";up" : "",
3653 (s->flags & SN_STAT_NORFRSH) ? ";norefresh" : "");
3654
3655 chunk_printf(&msg, sizeof(trash),
3656 "</td>"
3657 "<td align=\"left\" valign=\"top\" nowrap width=\"1%%\">"
3658 "<b>External ressources:</b><ul style=\"margin-top: 0.25em;\">\n"
3659 "<li><a href=\"" PRODUCT_URL "\">Primary site</a><br>\n"
3660 "<li><a href=\"" PRODUCT_URL_UPD "\">Updates (v" PRODUCT_BRANCH ")</a><br>\n"
3661 "<li><a href=\"" PRODUCT_URL_DOC "\">Online manual</a><br>\n"
3662 "</ul>"
3663 "</td>"
3664 "</tr></table>\n"
3665 ""
3666 );
3667
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3668 if (buffer_write_chunk(rep, &msg) != 0)
3669 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3670
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3671 memset(&s->data_ctx, 0, sizeof(s->data_ctx));
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 = proxy;
3674 s->data_ctx.stats.px_st = DATA_ST_PX_INIT;
3675 s->data_state = DATA_ST_LIST;
3676 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3677
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3678 case DATA_ST_LIST:
3679 /* dump proxies */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3680 while (s->data_ctx.stats.px) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3681 px = s->data_ctx.stats.px;
3682 /* skip the disabled proxies and non-networked ones */
3683 if (px->state != PR_STSTOPPED && (px->cap & (PR_CAP_FE | PR_CAP_BE)))
3684 if (produce_content_stats_proxy(s, px) == 0)
3685 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3686
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3687 s->data_ctx.stats.px = px->next;
3688 s->data_ctx.stats.px_st = DATA_ST_PX_INIT;
3689 }
3690 /* here, we just have reached the last proxy */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3691
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3692 s->data_state = DATA_ST_END;
3693 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3694
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3695 case DATA_ST_END:
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]3696 chunk_printf(&msg, sizeof(trash), "</body></html>\n");
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3697 if (buffer_write_chunk(rep, &msg) != 0)
3698 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3699
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3700 s->data_state = DATA_ST_FIN;
3701 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3702
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3703 case DATA_ST_FIN:
3704 s->flags &= ~SN_SELF_GEN;
3705 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3706
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3707 default:
3708 /* unknown state ! */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3709 s->txn.status = 500;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3710 client_retnclose(s, error_message(s, HTTP_ERR_500));
3711 if (!(s->flags & SN_ERR_MASK))
3712 s->flags |= SN_ERR_PRXCOND;
3713 if (!(s->flags & SN_FINST_MASK))
3714 s->flags |= SN_FINST_R;
3715 s->flags &= ~SN_SELF_GEN;
3716 return 1;
3717 }
3718}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3719
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3720
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3721/*
3722 * Dumps statistics for a proxy.
3723 * Returns 0 if it had to stop dumping data because of lack of buffer space,
3724 * ot non-zero if everything completed.
3725 */
3726int produce_content_stats_proxy(struct session *s, struct proxy *px)
3727{
3728 struct buffer *rep = s->rep;
3729 struct server *sv;
3730 struct chunk msg;
3731
3732 msg.len = 0;
3733 msg.str = trash;
3734
3735 switch (s->data_ctx.stats.px_st) {
3736 case DATA_ST_PX_INIT:
3737 /* we are on a new proxy */
3738
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3739 if (s->be->uri_auth && s->be->uri_auth->scope) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3740 /* we have a limited scope, we have to check the proxy name */
3741 struct stat_scope *scope;
3742 int len;
3743
3744 len = strlen(px->id);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3745 scope = s->be->uri_auth->scope;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3746
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3747 while (scope) {
3748 /* match exact proxy name */
3749 if (scope->px_len == len && !memcmp(px->id, scope->px_id, len))
3750 break;
3751
3752 /* match '.' which means 'self' proxy */
3753 if (!strcmp(scope->px_id, ".") && px == s->fe)
3754 break;
3755 scope = scope->next;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3756 }
3757
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3758 /* proxy name not found : don't dump anything */
3759 if (scope == NULL)
3760 return 1;
3761 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3762
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3763 s->data_ctx.stats.px_st = DATA_ST_PX_TH;
3764 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3765
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3766 case DATA_ST_PX_TH:
3767 /* print a new table */
3768 chunk_printf(&msg, sizeof(trash),
3769 "<table cols=\"20\" class=\"tbl\" width=\"100%%\">\n"
3770 "<tr align=\"center\" class=\"titre\">"
3771 "<th colspan=2 class=\"pxname\">%s</th>"
3772 "<th colspan=18 class=\"empty\"></th>"
3773 "</tr>\n"
3774 "<tr align=\"center\" class=\"titre\">"
3775 "<th rowspan=2></th>"
3776 "<th colspan=2>Queue</th><th colspan=4>Sessions</th>"
3777 "<th colspan=2>Bytes</th><th colspan=2>Denied</th>"
3778 "<th colspan=3>Errors</th><th colspan=6>Server</th>"
3779 "</tr>\n"
3780 "<tr align=\"center\" class=\"titre\">"
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3781 "<th>Cur</th><th>Max</th><th>Cur</th><th>Max</th>"
3782 "<th>Limit</th><th>Cumul</th><th>In</th><th>Out</th>"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3783 "<th>Req</th><th>Resp</th><th>Req</th><th>Conn</th>"
3784 "<th>Resp</th><th>Status</th><th>Weight</th><th>Act</th>"
3785 "<th>Bck</th><th>Check</th><th>Down</th></tr>\n"
3786 "",
3787 px->id);
3788
3789 if (buffer_write_chunk(rep, &msg) != 0)
3790 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3791
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3792 s->data_ctx.stats.px_st = DATA_ST_PX_FE;
3793 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3794
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3795 case DATA_ST_PX_FE:
3796 /* print the frontend */
3797 if (px->cap & PR_CAP_FE) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3798 chunk_printf(&msg, sizeof(trash),
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3799 /* name, queue */
3800 "<tr align=center class=\"frontend\"><td>Frontend</td><td colspan=2></td>"
3801 /* sessions : current, max, limit, cumul. */
3802 "<td align=right>%d</td><td align=right>%d</td><td align=right>%d</td><td align=right>%d</td>"
3803 /* bytes : in, out */
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3804 "<td align=right>%lld</td><td align=right>%lld</td>"
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3805 /* denied: req, resp */
3806 "<td align=right>%d</td><td align=right>%d</td>"
3807 /* errors : request, connect, response */
3808 "<td align=right>%d</td><td align=right></td><td align=right></td>"
3809 /* server status : reflect backend status */
3810 "<td align=center>%s</td>"
3811 /* rest of server: nothing */
3812 "<td align=center colspan=5></td></tr>"
3813 "",
3814 px->feconn, px->feconn_max, px->maxconn, px->cum_feconn,
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3815 px->bytes_in, px->bytes_out,
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3816 px->denied_req, px->denied_resp,
3817 px->failed_req,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3818 px->state == PR_STRUN ? "OPEN" :
3819 px->state == PR_STIDLE ? "FULL" : "STOP");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3820
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3821 if (buffer_write_chunk(rep, &msg) != 0)
3822 return 0;
3823 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3824
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3825 s->data_ctx.stats.sv = px->srv; /* may be NULL */
3826 s->data_ctx.stats.px_st = DATA_ST_PX_SV;
3827 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3828
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3829 case DATA_ST_PX_SV:
3830 /* stats.sv has been initialized above */
3831 while (s->data_ctx.stats.sv != NULL) {
3832 static char *srv_hlt_st[5] = { "DOWN", "DN %d/%d &uarr;", "UP %d/%d &darr;", "UP", "<i>no check</i>" };
3833 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]3834
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3835 sv = s->data_ctx.stats.sv;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3836
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3837 /* FIXME: produce some small strings for "UP/DOWN x/y &#xxxx;" */
3838 if (!(sv->state & SRV_CHECKED))
3839 sv_state = 4;
3840 else if (sv->state & SRV_RUNNING)
3841 if (sv->health == sv->rise + sv->fall - 1)
3842 sv_state = 3; /* UP */
3843 else
3844 sv_state = 2; /* going down */
3845 else
3846 if (sv->health)
3847 sv_state = 1; /* going up */
3848 else
3849 sv_state = 0; /* DOWN */
3850
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]3851 if ((sv_state == 0) && (s->flags & SN_STAT_HIDEDWN)) {
3852 /* do not report servers which are DOWN */
3853 s->data_ctx.stats.sv = sv->next;
3854 continue;
3855 }
3856
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3857 chunk_printf(&msg, sizeof(trash),
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3858 /* name */
3859 "<tr align=\"center\" class=\"%s%d\"><td>%s</td>"
3860 /* queue : current, max */
3861 "<td align=right>%d</td><td align=right>%d</td>"
3862 /* sessions : current, max, limit, cumul */
3863 "<td align=right>%d</td><td align=right>%d</td><td align=right>%s</td><td align=right>%d</td>"
3864 /* bytes : in, out */
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3865 "<td align=right>%lld</td><td align=right>%lld</td>"
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3866 /* denied: req, resp */
3867 "<td align=right></td><td align=right>%d</td>"
3868 /* errors : request, connect, response */
3869 "<td align=right></td><td align=right>%d</td><td align=right>%d</td>\n"
3870 "",
Willy Tarreau368e96a2007-01-07 00:16:15 +0100[diff] [blame]3871 (sv->state & SRV_BACKUP) ? "backup" : "active",
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3872 sv_state, sv->id,
3873 sv->nbpend, sv->nbpend_max,
3874 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]3875 sv->bytes_in, sv->bytes_out,
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3876 sv->failed_secu,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3877 sv->failed_conns, sv->failed_resp);
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3878
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3879 /* status */
3880 chunk_printf(&msg, sizeof(trash), "<td nowrap>");
3881 chunk_printf(&msg, sizeof(trash),
3882 srv_hlt_st[sv_state],
3883 (sv->state & SRV_RUNNING) ? (sv->health - sv->rise + 1) : (sv->health),
3884 (sv->state & SRV_RUNNING) ? (sv->fall) : (sv->rise));
3885
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3886 chunk_printf(&msg, sizeof(trash),
3887 /* weight */
3888 "</td><td>%d</td>"
3889 /* act, bck */
3890 "<td>%s</td><td>%s</td>"
3891 "",
Willy Tarreau417fae02007-03-25 21:16:40 +0200[diff] [blame]3892 sv->uweight,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3893 (sv->state & SRV_BACKUP) ? "-" : "Y",
3894 (sv->state & SRV_BACKUP) ? "Y" : "-");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3895
3896 /* check failures : unique, fatal */
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3897 if (sv->state & SRV_CHECKED)
3898 chunk_printf(&msg, sizeof(trash),
3899 "<td align=right>%d</td><td align=right>%d</td></tr>\n",
3900 sv->failed_checks, sv->down_trans);
3901 else
3902 chunk_printf(&msg, sizeof(trash),
3903 "<td colspan=2></td></tr>\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3904
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3905 if (buffer_write_chunk(rep, &msg) != 0)
3906 return 0;
3907
3908 s->data_ctx.stats.sv = sv->next;
3909 } /* while sv */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3910
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3911 s->data_ctx.stats.px_st = DATA_ST_PX_BE;
3912 /* fall through */
3913
3914 case DATA_ST_PX_BE:
3915 /* print the backend */
3916 if (px->cap & PR_CAP_BE) {
Willy Tarreau4b946c82007-07-25 00:28:06 +0200[diff] [blame]3917 int gcd = 1;
3918
Willy Tarreau5af3a692007-07-24 23:32:33 +0200[diff] [blame]3919 if (px->map_state & PR_MAP_RECALC)
3920 recalc_server_map(px);
3921
Willy Tarreau4b946c82007-07-25 00:28:06 +0200[diff] [blame]3922 /* The GCD which was computed causes the total effective
3923 * weight to appear lower than all weights. Let's
3924 * recompute it.
3925 */
3926 if (px->srv && px->srv->eweight)
3927 gcd = px->srv->uweight / px->srv->eweight;
3928
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3929 chunk_printf(&msg, sizeof(trash),
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3930 /* name */
3931 "<tr align=center class=\"backend\"><td>Backend</td>"
3932 /* queue : current, max */
3933 "<td align=right>%d</td><td align=right>%d</td>"
3934 /* sessions : current, max, limit, cumul. */
3935 "<td align=right>%d</td><td align=right>%d</td><td align=right>%d</td><td align=right>%d</td>"
3936 /* bytes : in, out */
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3937 "<td align=right>%lld</td><td align=right>%lld</td>"
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3938 /* denied: req, resp */
3939 "<td align=right>%d</td><td align=right>%d</td>"
3940 /* errors : request, connect, response */
3941 "<td align=right></td><td align=right>%d</td><td align=right>%d</td>\n"
3942 /* server status : reflect backend status (up/down) : we display UP
3943 * if the backend has known working servers or if it has no server at
3944 * all (eg: for stats). Tthen we display the total weight, number of
3945 * active and backups. */
3946 "<td align=center>%s</td><td align=center>%d</td>"
3947 "<td align=center>%d</td><td align=center>%d</td>"
3948 /* rest of server: nothing */
3949 "<td align=center colspan=2></td></tr>"
3950 "",
3951 px->nbpend /* or px->totpend ? */, px->nbpend_max,
3952 px->beconn, px->beconn_max, px->fullconn, px->cum_beconn,
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3953 px->bytes_in, px->bytes_out,
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3954 px->denied_req, px->denied_resp,
3955 px->failed_conns, px->failed_resp,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3956 (px->srv_map_sz > 0 || !px->srv) ? "UP" : "DOWN",
Willy Tarreau4b946c82007-07-25 00:28:06 +0200[diff] [blame]3957 px->srv_map_sz * gcd, px->srv_act, px->srv_bck);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3958
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3959 if (buffer_write_chunk(rep, &msg) != 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3960 return 0;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3961 }
3962
3963 s->data_ctx.stats.px_st = DATA_ST_PX_END;
3964 /* fall through */
3965
3966 case DATA_ST_PX_END:
3967 chunk_printf(&msg, sizeof(trash), "</table><p>\n");
3968
3969 if (buffer_write_chunk(rep, &msg) != 0)
3970 return 0;
3971
3972 s->data_ctx.stats.px_st = DATA_ST_PX_FIN;
3973 /* fall through */
3974
3975 case DATA_ST_PX_FIN:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3976 return 1;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3977
3978 default:
3979 /* unknown state, we should put an abort() here ! */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3980 return 1;
3981 }
3982}
3983
3984
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3985/* Iterate the same filter through all request headers.
3986 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3987 * Since it can manage the switch to another backend, it updates the per-proxy
3988 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3989 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3990int 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]3991{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3992 char term;
3993 char *cur_ptr, *cur_end, *cur_next;
3994 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3995 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3996 struct hdr_idx_elem *cur_hdr;
3997 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]3998
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3999 last_hdr = 0;
4000
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4001 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4002 old_idx = 0;
4003
4004 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4005 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4006 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4007 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4008 (exp->action == ACT_ALLOW ||
4009 exp->action == ACT_DENY ||
4010 exp->action == ACT_TARPIT))
4011 return 0;
4012
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4013 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4014 if (!cur_idx)
4015 break;
4016
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4017 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4018 cur_ptr = cur_next;
4019 cur_end = cur_ptr + cur_hdr->len;
4020 cur_next = cur_end + cur_hdr->cr + 1;
4021
4022 /* Now we have one header between cur_ptr and cur_end,
4023 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4024 */
4025
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4026 /* The annoying part is that pattern matching needs
4027 * that we modify the contents to null-terminate all
4028 * strings before testing them.
4029 */
4030
4031 term = *cur_end;
4032 *cur_end = '\0';
4033
4034 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4035 switch (exp->action) {
4036 case ACT_SETBE:
4037 /* It is not possible to jump a second time.
4038 * FIXME: should we return an HTTP/500 here so that
4039 * the admin knows there's a problem ?
4040 */
4041 if (t->be != t->fe)
4042 break;
4043
4044 /* Swithing Proxy */
4045 t->be = (struct proxy *) exp->replace;
4046
4047 /* right now, the backend switch is not too much complicated
4048 * because we have associated req_cap and rsp_cap to the
4049 * frontend, and the beconn will be updated later.
4050 */
4051
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4052 t->rep->rto = t->req->wto = t->be->srvtimeout;
4053 t->req->cto = t->be->contimeout;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4054 t->conn_retries = t->be->conn_retries;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4055 last_hdr = 1;
4056 break;
4057
4058 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4059 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4060 last_hdr = 1;
4061 break;
4062
4063 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4064 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4065 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4066 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4067 break;
4068
4069 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4070 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4071 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4072 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4073 break;
4074
4075 case ACT_REPLACE:
4076 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4077 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
4078 /* FIXME: if the user adds a newline in the replacement, the
4079 * index will not be recalculated for now, and the new line
4080 * will not be counted as a new header.
4081 */
4082
4083 cur_end += delta;
4084 cur_next += delta;
4085 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4086 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4087 break;
4088
4089 case ACT_REMOVE:
4090 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
4091 cur_next += delta;
4092
4093 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4094 txn->req.eoh += delta;
4095 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4096 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4097 cur_hdr->len = 0;
4098 cur_end = NULL; /* null-term has been rewritten */
4099 break;
4100
4101 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4102 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4103 if (cur_end)
4104 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4105
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4106 /* keep the link from this header to next one in case of later
4107 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4108 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4109 old_idx = cur_idx;
4110 }
4111 return 0;
4112}
4113
4114
4115/* Apply the filter to the request line.
4116 * Returns 0 if nothing has been done, 1 if the filter has been applied,
4117 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4118 * Since it can manage the switch to another backend, it updates the per-proxy
4119 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4120 */
4121int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
4122{
4123 char term;
4124 char *cur_ptr, *cur_end;
4125 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4126 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4127 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4128
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4129
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4130 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4131 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4132 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4133 (exp->action == ACT_ALLOW ||
4134 exp->action == ACT_DENY ||
4135 exp->action == ACT_TARPIT))
4136 return 0;
4137 else if (exp->action == ACT_REMOVE)
4138 return 0;
4139
4140 done = 0;
4141
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4142 cur_ptr = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4143 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4144
4145 /* Now we have the request line between cur_ptr and cur_end */
4146
4147 /* The annoying part is that pattern matching needs
4148 * that we modify the contents to null-terminate all
4149 * strings before testing them.
4150 */
4151
4152 term = *cur_end;
4153 *cur_end = '\0';
4154
4155 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4156 switch (exp->action) {
4157 case ACT_SETBE:
4158 /* It is not possible to jump a second time.
4159 * FIXME: should we return an HTTP/500 here so that
4160 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4161 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4162 if (t->be != t->fe)
4163 break;
4164
4165 /* Swithing Proxy */
4166 t->be = (struct proxy *) exp->replace;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4167
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4168 /* right now, the backend switch is not too much complicated
4169 * because we have associated req_cap and rsp_cap to the
4170 * frontend, and the beconn will be updated later.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4171 */
4172
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4173 t->rep->rto = t->req->wto = t->be->srvtimeout;
4174 t->req->cto = t->be->contimeout;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4175 t->conn_retries = t->be->conn_retries;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4176 done = 1;
4177 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4178
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4179 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4180 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4181 done = 1;
4182 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4183
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4184 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4185 txn->flags |= TX_CLDENY;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4186 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4187 done = 1;
4188 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4189
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4190 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4191 txn->flags |= TX_CLTARPIT;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4192 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4193 done = 1;
4194 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4195
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4196 case ACT_REPLACE:
4197 *cur_end = term; /* restore the string terminator */
4198 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4199 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
4200 /* FIXME: if the user adds a newline in the replacement, the
4201 * index will not be recalculated for now, and the new line
4202 * will not be counted as a new header.
4203 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4204
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4205 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4206 cur_end += delta;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4207
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4208 txn->req.sol = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4209 cur_end = (char *)http_parse_reqline(&txn->req, req->data,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4210 HTTP_MSG_RQMETH,
4211 cur_ptr, cur_end + 1,
4212 NULL, NULL);
4213 if (unlikely(!cur_end))
4214 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]4215
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4216 /* we have a full request and we know that we have either a CR
4217 * or an LF at <ptr>.
4218 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4219 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
4220 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]4221 /* there is no point trying this regex on headers */
4222 return 1;
4223 }
4224 }
4225 *cur_end = term; /* restore the string terminator */
4226 return done;
4227}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]4228
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4229
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4230
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4231/*
4232 * Apply all the req filters <exp> to all headers in buffer <req> of session <t>.
4233 * 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]4234 * unparsable request. Since it can manage the switch to another backend, it
4235 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4236 */
4237int apply_filters_to_request(struct session *t, struct buffer *req, struct hdr_exp *exp)
4238{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4239 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4240 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4241 while (exp && !(txn->flags & (TX_CLDENY|TX_CLTARPIT))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4242 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4243
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4244 /*
4245 * The interleaving of transformations and verdicts
4246 * makes it difficult to decide to continue or stop
4247 * the evaluation.
4248 */
4249
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4250 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4251 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4252 exp->action == ACT_TARPIT || exp->action == ACT_PASS)) {
4253 exp = exp->next;
4254 continue;
4255 }
4256
4257 /* Apply the filter to the request line. */
4258 ret = apply_filter_to_req_line(t, req, exp);
4259 if (unlikely(ret < 0))
4260 return -1;
4261
4262 if (likely(ret == 0)) {
4263 /* The filter did not match the request, it can be
4264 * iterated through all headers.
4265 */
4266 apply_filter_to_req_headers(t, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4267 }
4268 exp = exp->next;
4269 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4270 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4271}
4272
4273
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4274
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4275/*
4276 * Manager client-side cookie
4277 */
4278void manage_client_side_cookies(struct session *t, struct buffer *req)
4279{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4280 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4281 char *p1, *p2, *p3, *p4;
4282 char *del_colon, *del_cookie, *colon;
4283 int app_cookies;
4284
4285 appsess *asession_temp = NULL;
4286 appsess local_asession;
4287
4288 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4289 int cur_idx, old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4290
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4291 if (t->be->cookie_name == NULL &&
4292 t->be->appsession_name == NULL &&
4293 t->be->capture_name == NULL)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4294 return;
4295
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4296 /* Iterate through the headers.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4297 * we start with the start line.
4298 */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]4299 old_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4300 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4301
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4302 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4303 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4304 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4305
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4306 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4307 cur_ptr = cur_next;
4308 cur_end = cur_ptr + cur_hdr->len;
4309 cur_next = cur_end + cur_hdr->cr + 1;
4310
4311 /* We have one full header between cur_ptr and cur_end, and the
4312 * next header starts at cur_next. We're only interested in
4313 * "Cookie:" headers.
4314 */
4315
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4316 val = http_header_match2(cur_ptr, cur_end, "Cookie", 6);
4317 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4318 old_idx = cur_idx;
4319 continue;
4320 }
4321
4322 /* Now look for cookies. Conforming to RFC2109, we have to support
4323 * attributes whose name begin with a '$', and associate them with
4324 * the right cookie, if we want to delete this cookie.
4325 * So there are 3 cases for each cookie read :
4326 * 1) it's a special attribute, beginning with a '$' : ignore it.
4327 * 2) it's a server id cookie that we *MAY* want to delete : save
4328 * some pointers on it (last semi-colon, beginning of cookie...)
4329 * 3) it's an application cookie : we *MAY* have to delete a previous
4330 * "special" cookie.
4331 * At the end of loop, if a "special" cookie remains, we may have to
4332 * remove it. If no application cookie persists in the header, we
4333 * *MUST* delete it
4334 */
4335
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4336 colon = p1 = cur_ptr + val; /* first non-space char after 'Cookie:' */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4337
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4338 /* del_cookie == NULL => nothing to be deleted */
4339 del_colon = del_cookie = NULL;
4340 app_cookies = 0;
4341
4342 while (p1 < cur_end) {
4343 /* skip spaces and colons, but keep an eye on these ones */
4344 while (p1 < cur_end) {
4345 if (*p1 == ';' || *p1 == ',')
4346 colon = p1;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4347 else if (!isspace((unsigned char)*p1))
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4348 break;
4349 p1++;
4350 }
4351
4352 if (p1 == cur_end)
4353 break;
4354
4355 /* p1 is at the beginning of the cookie name */
4356 p2 = p1;
4357 while (p2 < cur_end && *p2 != '=')
4358 p2++;
4359
4360 if (p2 == cur_end)
4361 break;
4362
4363 p3 = p2 + 1; /* skips the '=' sign */
4364 if (p3 == cur_end)
4365 break;
4366
4367 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4368 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';' && *p4 != ',')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4369 p4++;
4370
4371 /* here, we have the cookie name between p1 and p2,
4372 * and its value between p3 and p4.
4373 * we can process it :
4374 *
4375 * Cookie: NAME=VALUE;
4376 * | || || |
4377 * | || || +--> p4
4378 * | || |+-------> p3
4379 * | || +--------> p2
4380 * | |+------------> p1
4381 * | +-------------> colon
4382 * +--------------------> cur_ptr
4383 */
4384
4385 if (*p1 == '$') {
4386 /* skip this one */
4387 }
4388 else {
4389 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4390 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4391 txn->cli_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4392 (p4 - p1 >= t->fe->capture_namelen) &&
4393 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4394 int log_len = p4 - p1;
4395
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]4396 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4397 Alert("HTTP logging : out of memory.\n");
4398 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4399 if (log_len > t->fe->capture_len)
4400 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4401 memcpy(txn->cli_cookie, p1, log_len);
4402 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4403 }
4404 }
4405
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4406 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4407 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4408 /* Cool... it's the right one */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4409 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4410 char *delim;
4411
4412 /* if we're in cookie prefix mode, we'll search the delimitor so that we
4413 * have the server ID betweek p3 and delim, and the original cookie between
4414 * delim+1 and p4. Otherwise, delim==p4 :
4415 *
4416 * Cookie: NAME=SRV~VALUE;
4417 * | || || | |
4418 * | || || | +--> p4
4419 * | || || +--------> delim
4420 * | || |+-----------> p3
4421 * | || +------------> p2
4422 * | |+----------------> p1
4423 * | +-----------------> colon
4424 * +------------------------> cur_ptr
4425 */
4426
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4427 if (t->be->options & PR_O_COOK_PFX) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4428 for (delim = p3; delim < p4; delim++)
4429 if (*delim == COOKIE_DELIM)
4430 break;
4431 }
4432 else
4433 delim = p4;
4434
4435
4436 /* Here, we'll look for the first running server which supports the cookie.
4437 * This allows to share a same cookie between several servers, for example
4438 * to dedicate backup servers to specific servers only.
4439 * However, to prevent clients from sticking to cookie-less backup server
4440 * when they have incidentely learned an empty cookie, we simply ignore
4441 * empty cookies and mark them as invalid.
4442 */
4443 if (delim == p3)
4444 srv = NULL;
4445
4446 while (srv) {
Willy Tarreau92f2ab12007-02-02 22:14:47 +0100[diff] [blame]4447 if (srv->cookie && (srv->cklen == delim - p3) &&
4448 !memcmp(p3, srv->cookie, delim - p3)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4449 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4450 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4451 txn->flags &= ~TX_CK_MASK;
4452 txn->flags |= TX_CK_VALID;
4453 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4454 t->srv = srv;
4455 break;
4456 } else {
4457 /* we found a server, but it's down */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4458 txn->flags &= ~TX_CK_MASK;
4459 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4460 }
4461 }
4462 srv = srv->next;
4463 }
4464
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4465 if (!srv && !(txn->flags & TX_CK_DOWN)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4466 /* no server matched this cookie */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4467 txn->flags &= ~TX_CK_MASK;
4468 txn->flags |= TX_CK_INVALID;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4469 }
4470
4471 /* depending on the cookie mode, we may have to either :
4472 * - delete the complete cookie if we're in insert+indirect mode, so that
4473 * the server never sees it ;
4474 * - remove the server id from the cookie value, and tag the cookie as an
4475 * application cookie so that it does not get accidentely removed later,
4476 * if we're in cookie prefix mode
4477 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4478 if ((t->be->options & PR_O_COOK_PFX) && (delim != p4)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4479 int delta; /* negative */
4480
4481 delta = buffer_replace2(req, p3, delim + 1, NULL, 0);
4482 p4 += delta;
4483 cur_end += delta;
4484 cur_next += delta;
4485 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4486 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4487
4488 del_cookie = del_colon = NULL;
4489 app_cookies++; /* protect the header from deletion */
4490 }
4491 else if (del_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4492 (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]4493 del_cookie = p1;
4494 del_colon = colon;
4495 }
4496 } else {
4497 /* now we know that we must keep this cookie since it's
4498 * not ours. But if we wanted to delete our cookie
4499 * earlier, we cannot remove the complete header, but we
4500 * can remove the previous block itself.
4501 */
4502 app_cookies++;
4503
4504 if (del_cookie != NULL) {
4505 int delta; /* negative */
4506
4507 delta = buffer_replace2(req, del_cookie, p1, NULL, 0);
4508 p4 += delta;
4509 cur_end += delta;
4510 cur_next += delta;
4511 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4512 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4513 del_cookie = del_colon = NULL;
4514 }
4515 }
4516
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4517 if ((t->be->appsession_name != NULL) &&
4518 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4519 /* first, let's see if the cookie is our appcookie*/
4520
4521 /* Cool... it's the right one */
4522
4523 asession_temp = &local_asession;
4524
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4525 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4526 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
4527 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
4528 return;
4529 }
4530
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4531 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4532 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4533 asession_temp->serverid = NULL;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4534
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4535 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4536 asession_temp = appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid);
4537 if (asession_temp == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4538 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4539 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4540 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4541 Alert("Not enough memory process_cli():asession:calloc().\n");
4542 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4543 return;
4544 }
4545
4546 asession_temp->sessid = local_asession.sessid;
4547 asession_temp->serverid = local_asession.serverid;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]4548 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4549 } else {
4550 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4551 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4552 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4553 if (asession_temp->serverid == NULL) {
4554 Alert("Found Application Session without matching server.\n");
4555 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4556 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4557 while (srv) {
4558 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4559 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4560 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4561 txn->flags &= ~TX_CK_MASK;
4562 txn->flags |= TX_CK_VALID;
4563 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4564 t->srv = srv;
4565 break;
4566 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4567 txn->flags &= ~TX_CK_MASK;
4568 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4569 }
4570 }
4571 srv = srv->next;
4572 }/* end while(srv) */
4573 }/* end else if server == NULL */
4574
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]4575 tv_add(&asession_temp->expire, &now, &t->be->appsession_timeout);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4576 }/* end if ((t->proxy->appsession_name != NULL) ... */
4577 }
4578
4579 /* we'll have to look for another cookie ... */
4580 p1 = p4;
4581 } /* while (p1 < cur_end) */
4582
4583 /* There's no more cookie on this line.
4584 * We may have marked the last one(s) for deletion.
4585 * We must do this now in two ways :
4586 * - if there is no app cookie, we simply delete the header ;
4587 * - if there are app cookies, we must delete the end of the
4588 * string properly, including the colon/semi-colon before
4589 * the cookie name.
4590 */
4591 if (del_cookie != NULL) {
4592 int delta;
4593 if (app_cookies) {
4594 delta = buffer_replace2(req, del_colon, cur_end, NULL, 0);
4595 cur_end = del_colon;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4596 cur_hdr->len += delta;
4597 } else {
4598 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4599
4600 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4601 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4602 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4603 cur_hdr->len = 0;
4604 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]4605 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4606 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4607 }
4608
4609 /* keep the link from this header to next one */
4610 old_idx = cur_idx;
4611 } /* end of cookie processing on this header */
4612}
4613
4614
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4615/* Iterate the same filter through all response headers contained in <rtr>.
4616 * Returns 1 if this filter can be stopped upon return, otherwise 0.
4617 */
4618int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4619{
4620 char term;
4621 char *cur_ptr, *cur_end, *cur_next;
4622 int cur_idx, old_idx, last_hdr;
4623 struct http_txn *txn = &t->txn;
4624 struct hdr_idx_elem *cur_hdr;
4625 int len, delta;
4626
4627 last_hdr = 0;
4628
4629 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4630 old_idx = 0;
4631
4632 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4633 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4634 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4635 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4636 (exp->action == ACT_ALLOW ||
4637 exp->action == ACT_DENY))
4638 return 0;
4639
4640 cur_idx = txn->hdr_idx.v[old_idx].next;
4641 if (!cur_idx)
4642 break;
4643
4644 cur_hdr = &txn->hdr_idx.v[cur_idx];
4645 cur_ptr = cur_next;
4646 cur_end = cur_ptr + cur_hdr->len;
4647 cur_next = cur_end + cur_hdr->cr + 1;
4648
4649 /* Now we have one header between cur_ptr and cur_end,
4650 * and the next header starts at cur_next.
4651 */
4652
4653 /* The annoying part is that pattern matching needs
4654 * that we modify the contents to null-terminate all
4655 * strings before testing them.
4656 */
4657
4658 term = *cur_end;
4659 *cur_end = '\0';
4660
4661 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4662 switch (exp->action) {
4663 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4664 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4665 last_hdr = 1;
4666 break;
4667
4668 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4669 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4670 last_hdr = 1;
4671 break;
4672
4673 case ACT_REPLACE:
4674 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4675 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4676 /* FIXME: if the user adds a newline in the replacement, the
4677 * index will not be recalculated for now, and the new line
4678 * will not be counted as a new header.
4679 */
4680
4681 cur_end += delta;
4682 cur_next += delta;
4683 cur_hdr->len += delta;
4684 txn->rsp.eoh += delta;
4685 break;
4686
4687 case ACT_REMOVE:
4688 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4689 cur_next += delta;
4690
4691 /* FIXME: this should be a separate function */
4692 txn->rsp.eoh += delta;
4693 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4694 txn->hdr_idx.used--;
4695 cur_hdr->len = 0;
4696 cur_end = NULL; /* null-term has been rewritten */
4697 break;
4698
4699 }
4700 }
4701 if (cur_end)
4702 *cur_end = term; /* restore the string terminator */
4703
4704 /* keep the link from this header to next one in case of later
4705 * removal of next header.
4706 */
4707 old_idx = cur_idx;
4708 }
4709 return 0;
4710}
4711
4712
4713/* Apply the filter to the status line in the response buffer <rtr>.
4714 * Returns 0 if nothing has been done, 1 if the filter has been applied,
4715 * or -1 if a replacement resulted in an invalid status line.
4716 */
4717int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4718{
4719 char term;
4720 char *cur_ptr, *cur_end;
4721 int done;
4722 struct http_txn *txn = &t->txn;
4723 int len, delta;
4724
4725
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4726 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4727 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4728 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4729 (exp->action == ACT_ALLOW ||
4730 exp->action == ACT_DENY))
4731 return 0;
4732 else if (exp->action == ACT_REMOVE)
4733 return 0;
4734
4735 done = 0;
4736
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4737 cur_ptr = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4738 cur_end = cur_ptr + txn->rsp.sl.rq.l;
4739
4740 /* Now we have the status line between cur_ptr and cur_end */
4741
4742 /* The annoying part is that pattern matching needs
4743 * that we modify the contents to null-terminate all
4744 * strings before testing them.
4745 */
4746
4747 term = *cur_end;
4748 *cur_end = '\0';
4749
4750 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4751 switch (exp->action) {
4752 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4753 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4754 done = 1;
4755 break;
4756
4757 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4758 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4759 done = 1;
4760 break;
4761
4762 case ACT_REPLACE:
4763 *cur_end = term; /* restore the string terminator */
4764 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4765 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4766 /* FIXME: if the user adds a newline in the replacement, the
4767 * index will not be recalculated for now, and the new line
4768 * will not be counted as a new header.
4769 */
4770
4771 txn->rsp.eoh += delta;
4772 cur_end += delta;
4773
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4774 txn->rsp.sol = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4775 cur_end = (char *)http_parse_stsline(&txn->rsp, rtr->data,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]4776 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4777 cur_ptr, cur_end + 1,
4778 NULL, NULL);
4779 if (unlikely(!cur_end))
4780 return -1;
4781
4782 /* we have a full respnse and we know that we have either a CR
4783 * or an LF at <ptr>.
4784 */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4785 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]4786 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.rq.l, *cur_end == '\r');
4787 /* there is no point trying this regex on headers */
4788 return 1;
4789 }
4790 }
4791 *cur_end = term; /* restore the string terminator */
4792 return done;
4793}
4794
4795
4796
4797/*
4798 * Apply all the resp filters <exp> to all headers in buffer <rtr> of session <t>.
4799 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
4800 * unparsable response.
4801 */
4802int apply_filters_to_response(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4803{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4804 struct http_txn *txn = &t->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4805 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4806 while (exp && !(txn->flags & TX_SVDENY)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4807 int ret;
4808
4809 /*
4810 * The interleaving of transformations and verdicts
4811 * makes it difficult to decide to continue or stop
4812 * the evaluation.
4813 */
4814
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4815 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4816 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4817 exp->action == ACT_PASS)) {
4818 exp = exp->next;
4819 continue;
4820 }
4821
4822 /* Apply the filter to the status line. */
4823 ret = apply_filter_to_sts_line(t, rtr, exp);
4824 if (unlikely(ret < 0))
4825 return -1;
4826
4827 if (likely(ret == 0)) {
4828 /* The filter did not match the response, it can be
4829 * iterated through all headers.
4830 */
4831 apply_filter_to_resp_headers(t, rtr, exp);
4832 }
4833 exp = exp->next;
4834 }
4835 return 0;
4836}
4837
4838
4839
4840/*
4841 * Manager server-side cookies
4842 */
4843void manage_server_side_cookies(struct session *t, struct buffer *rtr)
4844{
4845 struct http_txn *txn = &t->txn;
4846 char *p1, *p2, *p3, *p4;
4847
4848 appsess *asession_temp = NULL;
4849 appsess local_asession;
4850
4851 char *cur_ptr, *cur_end, *cur_next;
4852 int cur_idx, old_idx, delta;
4853
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4854 if (t->be->cookie_name == NULL &&
4855 t->be->appsession_name == NULL &&
4856 t->be->capture_name == NULL &&
4857 !(t->be->options & PR_O_CHK_CACHE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4858 return;
4859
4860 /* Iterate through the headers.
4861 * we start with the start line.
4862 */
4863 old_idx = 0;
4864 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4865
4866 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
4867 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4868 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4869
4870 cur_hdr = &txn->hdr_idx.v[cur_idx];
4871 cur_ptr = cur_next;
4872 cur_end = cur_ptr + cur_hdr->len;
4873 cur_next = cur_end + cur_hdr->cr + 1;
4874
4875 /* We have one full header between cur_ptr and cur_end, and the
4876 * next header starts at cur_next. We're only interested in
4877 * "Cookie:" headers.
4878 */
4879
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4880 val = http_header_match2(cur_ptr, cur_end, "Set-Cookie", 10);
4881 if (!val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4882 old_idx = cur_idx;
4883 continue;
4884 }
4885
4886 /* OK, right now we know we have a set-cookie at cur_ptr */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4887 txn->flags |= TX_SCK_ANY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4888
4889
4890 /* maybe we only wanted to see if there was a set-cookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4891 if (t->be->cookie_name == NULL &&
4892 t->be->appsession_name == NULL &&
4893 t->be->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4894 return;
4895
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4896 p1 = cur_ptr + val; /* first non-space char after 'Set-Cookie:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4897
4898 while (p1 < cur_end) { /* in fact, we'll break after the first cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4899 if (p1 == cur_end || *p1 == ';') /* end of cookie */
4900 break;
4901
4902 /* p1 is at the beginning of the cookie name */
4903 p2 = p1;
4904
4905 while (p2 < cur_end && *p2 != '=' && *p2 != ';')
4906 p2++;
4907
4908 if (p2 == cur_end || *p2 == ';') /* next cookie */
4909 break;
4910
4911 p3 = p2 + 1; /* skip the '=' sign */
4912 if (p3 == cur_end)
4913 break;
4914
4915 p4 = p3;
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]4916 while (p4 < cur_end && !isspace((unsigned char)*p4) && *p4 != ';')
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4917 p4++;
4918
4919 /* here, we have the cookie name between p1 and p2,
4920 * and its value between p3 and p4.
4921 * we can process it.
4922 */
4923
4924 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4925 if (t->be->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4926 txn->srv_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4927 (p4 - p1 >= t->be->capture_namelen) &&
4928 memcmp(p1, t->be->capture_name, t->be->capture_namelen) == 0) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4929 int log_len = p4 - p1;
4930
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]4931 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4932 Alert("HTTP logging : out of memory.\n");
4933 }
4934
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4935 if (log_len > t->be->capture_len)
4936 log_len = t->be->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4937 memcpy(txn->srv_cookie, p1, log_len);
4938 txn->srv_cookie[log_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4939 }
4940
4941 /* now check if we need to process it for persistence */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4942 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4943 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4944 /* Cool... it's the right one */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4945 txn->flags |= TX_SCK_SEEN;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4946
4947 /* If the cookie is in insert mode on a known server, we'll delete
4948 * this occurrence because we'll insert another one later.
4949 * We'll delete it too if the "indirect" option is set and we're in
4950 * a direct access. */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4951 if (((t->srv) && (t->be->options & PR_O_COOK_INS)) ||
4952 ((t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_IND))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4953 /* this header must be deleted */
4954 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4955 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4956 txn->hdr_idx.used--;
4957 cur_hdr->len = 0;
4958 cur_next += delta;
4959 txn->rsp.eoh += delta;
4960
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4961 txn->flags |= TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4962 }
4963 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4964 (t->be->options & PR_O_COOK_RW)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4965 /* replace bytes p3->p4 with the cookie name associated
4966 * with this server since we know it.
4967 */
4968 delta = buffer_replace2(rtr, p3, p4, t->srv->cookie, t->srv->cklen);
4969 cur_hdr->len += delta;
4970 cur_next += delta;
4971 txn->rsp.eoh += delta;
4972
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4973 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4974 }
4975 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4976 (t->be->options & PR_O_COOK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4977 /* insert the cookie name associated with this server
4978 * before existing cookie, and insert a delimitor between them..
4979 */
4980 delta = buffer_replace2(rtr, p3, p3, t->srv->cookie, t->srv->cklen + 1);
4981 cur_hdr->len += delta;
4982 cur_next += delta;
4983 txn->rsp.eoh += delta;
4984
4985 p3[t->srv->cklen] = COOKIE_DELIM;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4986 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4987 }
4988 }
4989 /* next, let's see if the cookie is our appcookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4990 else if ((t->be->appsession_name != NULL) &&
4991 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4992
4993 /* Cool... it's the right one */
4994
4995 size_t server_id_len = strlen(t->srv->id) + 1;
4996 asession_temp = &local_asession;
4997
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]4998 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4999 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
5000 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
5001 return;
5002 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5003 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
5004 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5005 asession_temp->serverid = NULL;
5006
5007 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5008 if (appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid) == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5009 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5010 Alert("Not enough Memory process_srv():asession:calloc().\n");
5011 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
5012 return;
5013 }
5014 asession_temp->sessid = local_asession.sessid;
5015 asession_temp->serverid = local_asession.serverid;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5016 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
5017 } else {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5018 /* free wasted memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5019 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5020 }
5021
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5022 if (asession_temp->serverid == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5023 if ((asession_temp->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5024 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
5025 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
5026 return;
5027 }
5028 asession_temp->serverid[0] = '\0';
5029 }
5030
5031 if (asession_temp->serverid[0] == '\0')
5032 memcpy(asession_temp->serverid, t->srv->id, server_id_len);
5033
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]5034 tv_add(&asession_temp->expire, &now, &t->be->appsession_timeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5035
5036#if defined(DEBUG_HASH)
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5037 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5038#endif
5039 }/* end if ((t->proxy->appsession_name != NULL) ... */
5040 break; /* we don't want to loop again since there cannot be another cookie on the same line */
5041 } /* we're now at the end of the cookie value */
5042
5043 /* keep the link from this header to next one */
5044 old_idx = cur_idx;
5045 } /* end of cookie processing on this header */
5046}
5047
5048
5049
5050/*
5051 * Check if response is cacheable or not. Updates t->flags.
5052 */
5053void check_response_for_cacheability(struct session *t, struct buffer *rtr)
5054{
5055 struct http_txn *txn = &t->txn;
5056 char *p1, *p2;
5057
5058 char *cur_ptr, *cur_end, *cur_next;
5059 int cur_idx;
5060
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5061 if (!txn->flags & TX_CACHEABLE)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5062 return;
5063
5064 /* Iterate through the headers.
5065 * we start with the start line.
5066 */
5067 cur_idx = 0;
5068 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
5069
5070 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
5071 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5072 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5073
5074 cur_hdr = &txn->hdr_idx.v[cur_idx];
5075 cur_ptr = cur_next;
5076 cur_end = cur_ptr + cur_hdr->len;
5077 cur_next = cur_end + cur_hdr->cr + 1;
5078
5079 /* We have one full header between cur_ptr and cur_end, and the
5080 * next header starts at cur_next. We're only interested in
5081 * "Cookie:" headers.
5082 */
5083
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5084 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
5085 if (val) {
5086 if ((cur_end - (cur_ptr + val) >= 8) &&
5087 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
5088 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5089 return;
5090 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5091 }
5092
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5093 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
5094 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5095 continue;
5096
5097 /* OK, right now we know we have a cache-control header at cur_ptr */
5098
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]5099 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5100
5101 if (p1 >= cur_end) /* no more info */
5102 continue;
5103
5104 /* p1 is at the beginning of the value */
5105 p2 = p1;
5106
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]5107 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5108 p2++;
5109
5110 /* we have a complete value between p1 and p2 */
5111 if (p2 < cur_end && *p2 == '=') {
5112 /* we have something of the form no-cache="set-cookie" */
5113 if ((cur_end - p1 >= 21) &&
5114 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
5115 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5116 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5117 continue;
5118 }
5119
5120 /* OK, so we know that either p2 points to the end of string or to a comma */
5121 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
5122 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
5123 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
5124 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5125 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5126 return;
5127 }
5128
5129 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5130 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5131 continue;
5132 }
5133 }
5134}
5135
5136
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5137/*
5138 * Try to retrieve a known appsession in the URI, then the associated server.
5139 * If the server is found, it's assigned to the session.
5140 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5141void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5142{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5143 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5144 appsess *asession_temp = NULL;
5145 appsess local_asession;
5146 char *request_line;
5147
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5148 if (t->be->appsession_name == NULL ||
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]5149 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST) ||
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5150 (request_line = memchr(begin, ';', len)) == NULL ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5151 ((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]5152 return;
5153
5154 /* skip ';' */
5155 request_line++;
5156
5157 /* look if we have a jsessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5158 if (strncasecmp(request_line, t->be->appsession_name, t->be->appsession_name_len) != 0)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5159 return;
5160
5161 /* skip jsessionid= */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5162 request_line += t->be->appsession_name_len + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5163
5164 /* First try if we already have an appsession */
5165 asession_temp = &local_asession;
5166
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5167 if ((asession_temp->sessid = pool_alloc2(apools.sessid)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5168 Alert("Not enough memory process_cli():asession_temp->sessid:calloc().\n");
5169 send_log(t->be, LOG_ALERT, "Not enough Memory process_cli():asession_temp->sessid:calloc().\n");
5170 return;
5171 }
5172
5173 /* Copy the sessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5174 memcpy(asession_temp->sessid, request_line, t->be->appsession_len);
5175 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5176 asession_temp->serverid = NULL;
5177
5178 /* only do insert, if lookup fails */
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5179 if (appsession_hash_lookup(&(t->be->htbl_proxy), asession_temp->sessid) == NULL) {
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5180 if ((asession_temp = pool_alloc2(pool2_appsess)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5181 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5182 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5183 Alert("Not enough memory process_cli():asession:calloc().\n");
5184 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
5185 return;
5186 }
5187 asession_temp->sessid = local_asession.sessid;
5188 asession_temp->serverid = local_asession.serverid;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5189 appsession_hash_insert(&(t->be->htbl_proxy), asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5190 }
5191 else {
5192 /* free previously allocated memory */
Willy Tarreau63963c62007-05-13 21:29:55 +0200[diff] [blame]5193 pool_free2(apools.sessid, local_asession.sessid);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5194 }
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5195
Willy Tarreaud825eef2007-05-12 22:35:00 +0200[diff] [blame]5196 tv_add(&asession_temp->expire, &now, &t->be->appsession_timeout);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5197 asession_temp->request_count++;
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5198
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5199#if defined(DEBUG_HASH)
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]5200 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5201#endif
5202 if (asession_temp->serverid == NULL) {
5203 Alert("Found Application Session without matching server.\n");
5204 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5205 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5206 while (srv) {
5207 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]5208 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5209 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5210 txn->flags &= ~TX_CK_MASK;
5211 txn->flags |= TX_CK_VALID;
5212 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5213 t->srv = srv;
5214 break;
5215 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5216 txn->flags &= ~TX_CK_MASK;
5217 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5218 }
5219 }
5220 srv = srv->next;
5221 }
5222 }
5223}
5224
5225
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5226/*
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5227 * In a GET or HEAD request, check if the requested URI matches the stats uri
5228 * for the current backend, and if an authorization has been passed and is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5229 *
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5230 * 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]5231 * 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]5232 * produce_content() can be called to start sending data.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5233 *
5234 * Returns 1 if the session's state changes, otherwise 0.
5235 */
5236int stats_check_uri_auth(struct session *t, struct proxy *backend)
5237{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5238 struct http_txn *txn = &t->txn;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5239 struct uri_auth *uri_auth = backend->uri_auth;
5240 struct user_auth *user;
5241 int authenticated, cur_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5242 char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5243
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5244 /* check URI size */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5245 if (uri_auth->uri_len > txn->req.sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5246 return 0;
5247
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5248 h = t->req->data + txn->req.sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5249
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5250 /* the URI is in h */
5251 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5252 return 0;
5253
Willy Tarreaue7150cd2007-07-25 14:43:32 +0200[diff] [blame]5254 h += uri_auth->uri_len;
5255 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 3) {
5256 if (memcmp(h, ";up", 3) == 0) {
5257 t->flags |= SN_STAT_HIDEDWN;
5258 break;
5259 }
5260 h++;
5261 }
5262
5263 if (uri_auth->refresh) {
5264 h = t->req->data + txn->req.sl.rq.u + uri_auth->uri_len;
5265 while (h <= t->req->data + txn->req.sl.rq.u + txn->req.sl.rq.u_l - 10) {
5266 if (memcmp(h, ";norefresh", 10) == 0) {
5267 t->flags |= SN_STAT_NORFRSH;
5268 break;
5269 }
5270 h++;
5271 }
5272 }
5273
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5274 /* we are in front of a interceptable URI. Let's check
5275 * if there's an authentication and if it's valid.
5276 */
5277 user = uri_auth->users;
5278 if (!user) {
5279 /* no user auth required, it's OK */
5280 authenticated = 1;
5281 } else {
5282 authenticated = 0;
5283
5284 /* a user list is defined, we have to check.
5285 * skip 21 chars for "Authorization: Basic ".
5286 */
5287
5288 /* FIXME: this should move to an earlier place */
5289 cur_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5290 h = t->req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
5291 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
5292 int len = txn->hdr_idx.v[cur_idx].len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5293 if (len > 14 &&
5294 !strncasecmp("Authorization:", h, 14)) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5295 txn->auth_hdr.str = h;
5296 txn->auth_hdr.len = len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5297 break;
5298 }
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5299 h += len + txn->hdr_idx.v[cur_idx].cr + 1;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5300 }
5301
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5302 if (txn->auth_hdr.len < 21 ||
5303 memcmp(txn->auth_hdr.str + 14, " Basic ", 7))
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5304 user = NULL;
5305
5306 while (user) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5307 if ((txn->auth_hdr.len == user->user_len + 14 + 7)
5308 && !memcmp(txn->auth_hdr.str + 14 + 7,
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5309 user->user_pwd, user->user_len)) {
5310 authenticated = 1;
5311 break;
5312 }
5313 user = user->next;
5314 }
5315 }
5316
5317 if (!authenticated) {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]5318 struct chunk msg;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5319
5320 /* no need to go further */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]5321 msg.str = trash;
5322 msg.len = sprintf(trash, HTTP_401_fmt, uri_auth->auth_realm);
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]5323 txn->status = 401;
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]5324 client_retnclose(t, &msg);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5325 if (!(t->flags & SN_ERR_MASK))
5326 t->flags |= SN_ERR_PRXCOND;
5327 if (!(t->flags & SN_FINST_MASK))
5328 t->flags |= SN_FINST_R;
5329 return 1;
5330 }
5331
5332 /* The request is valid, the user is authenticate. Let's start sending
5333 * data.
5334 */
5335 t->cli_state = CL_STSHUTR;
5336 t->req->rlim = t->req->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]5337 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5338 t->data_source = DATA_SRC_STATS;
5339 t->data_state = DATA_ST_INIT;
5340 produce_content(t);
5341 return 1;
5342}
5343
5344
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5345/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5346 * Print a debug line with a header
5347 */
5348void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
5349{
5350 int len, max;
5351 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
5352 dir, (unsigned short)t->cli_fd, (unsigned short)t->srv_fd);
5353 max = end - start;
5354 UBOUND(max, sizeof(trash) - len - 1);
5355 len += strlcpy2(trash + len, start, max + 1);
5356 trash[len++] = '\n';
5357 write(1, trash, len);
5358}
5359
5360
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5361/************************************************************************/
5362/* The code below is dedicated to ACL parsing and matching */
5363/************************************************************************/
5364
5365
5366
5367
5368/* 1. Check on METHOD
5369 * We use the pre-parsed method if it is known, and store its number as an
5370 * integer. If it is unknown, we use the pointer and the length.
5371 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5372static int acl_parse_meth(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5373{
5374 int len, meth;
5375
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5376 len = strlen(*text);
5377 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5378
5379 pattern->val.i = meth;
5380 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5381 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5382 if (!pattern->ptr.str)
5383 return 0;
5384 pattern->len = len;
5385 }
5386 return 1;
5387}
5388
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5389static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5390acl_fetch_meth(struct proxy *px, struct session *l4, void *l7, int dir,
5391 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5392{
5393 int meth;
5394 struct http_txn *txn = l7;
5395
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5396 if (txn->req.msg_state != HTTP_MSG_BODY)
5397 return 0;
5398
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5399 meth = txn->meth;
5400 test->i = meth;
5401 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5402 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5403 /* ensure the indexes are not affected */
5404 return 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5405 test->len = txn->req.sl.rq.m_l;
5406 test->ptr = txn->req.sol;
5407 }
5408 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
5409 return 1;
5410}
5411
5412static int acl_match_meth(struct acl_test *test, struct acl_pattern *pattern)
5413{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]5414 int icase;
5415
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5416 if (test->i != pattern->val.i)
5417 return 0;
5418
5419 if (test->i != HTTP_METH_OTHER)
5420 return 1;
5421
5422 /* Other method, we must compare the strings */
5423 if (pattern->len != test->len)
5424 return 0;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]5425
5426 icase = pattern->flags & ACL_PAT_F_IGNORE_CASE;
5427 if ((icase && strncasecmp(pattern->ptr.str, test->ptr, test->len) != 0) ||
5428 (!icase && strncmp(pattern->ptr.str, test->ptr, test->len) != 0))
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5429 return 0;
5430 return 1;
5431}
5432
5433/* 2. Check on Request/Status Version
5434 * We simply compare strings here.
5435 */
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5436static int acl_parse_ver(const char **text, struct acl_pattern *pattern, int *opaque)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5437{
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5438 pattern->ptr.str = strdup(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5439 if (!pattern->ptr.str)
5440 return 0;
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5441 pattern->len = strlen(*text);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5442 return 1;
5443}
5444
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5445static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5446acl_fetch_rqver(struct proxy *px, struct session *l4, void *l7, int dir,
5447 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5448{
5449 struct http_txn *txn = l7;
5450 char *ptr;
5451 int len;
5452
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5453 if (txn->req.msg_state != HTTP_MSG_BODY)
5454 return 0;
5455
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5456 len = txn->req.sl.rq.v_l;
5457 ptr = txn->req.sol + txn->req.sl.rq.v - txn->req.som;
5458
5459 while ((len-- > 0) && (*ptr++ != '/'));
5460 if (len <= 0)
5461 return 0;
5462
5463 test->ptr = ptr;
5464 test->len = len;
5465
5466 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
5467 return 1;
5468}
5469
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5470static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5471acl_fetch_stver(struct proxy *px, struct session *l4, void *l7, int dir,
5472 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5473{
5474 struct http_txn *txn = l7;
5475 char *ptr;
5476 int len;
5477
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5478 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5479 return 0;
5480
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5481 len = txn->rsp.sl.st.v_l;
5482 ptr = txn->rsp.sol;
5483
5484 while ((len-- > 0) && (*ptr++ != '/'));
5485 if (len <= 0)
5486 return 0;
5487
5488 test->ptr = ptr;
5489 test->len = len;
5490
5491 test->flags = ACL_TEST_F_READ_ONLY | ACL_TEST_F_VOL_1ST;
5492 return 1;
5493}
5494
5495/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5496static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5497acl_fetch_stcode(struct proxy *px, struct session *l4, void *l7, int dir,
5498 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5499{
5500 struct http_txn *txn = l7;
5501 char *ptr;
5502 int len;
5503
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5504 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5505 return 0;
5506
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5507 len = txn->rsp.sl.st.c_l;
5508 ptr = txn->rsp.sol + txn->rsp.sl.st.c - txn->rsp.som;
5509
5510 test->i = __strl2ui(ptr, len);
5511 test->flags = ACL_TEST_F_VOL_1ST;
5512 return 1;
5513}
5514
5515/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]5516static int
Willy Tarreau97be1452007-06-10 11:47:14 +0200[diff] [blame]5517acl_fetch_url(struct proxy *px, struct session *l4, void *l7, int dir,
5518 struct acl_expr *expr, struct acl_test *test)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5519{
5520 struct http_txn *txn = l7;
5521
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5522 if (txn->req.msg_state != HTTP_MSG_BODY)
5523 return 0;
5524 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5525 /* ensure the indexes are not affected */
5526 return 0;
5527
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5528 test->len = txn->req.sl.rq.u_l;
5529 test->ptr = txn->req.sol + txn->req.sl.rq.u;
5530
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]5531 /* we do not need to set READ_ONLY because the data is in a buffer */
5532 test->flags = ACL_TEST_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5533 return 1;
5534}
5535
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5536/* 5. Check on HTTP header. A pointer to the beginning of the value is returned.
5537 * This generic function is used by both acl_fetch_chdr() and acl_fetch_shdr().
5538 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5539static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5540acl_fetch_hdr(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5541 struct acl_expr *expr, struct acl_test *test)
5542{
5543 struct http_txn *txn = l7;
5544 struct hdr_idx *idx = &txn->hdr_idx;
5545 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5546
5547 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5548 /* search for header from the beginning */
5549 ctx->idx = 0;
5550
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5551 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5552 test->flags |= ACL_TEST_F_FETCH_MORE;
5553 test->flags |= ACL_TEST_F_VOL_HDR;
5554 test->len = ctx->vlen;
5555 test->ptr = (char *)ctx->line + ctx->val;
5556 return 1;
5557 }
5558
5559 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5560 test->flags |= ACL_TEST_F_VOL_HDR;
5561 return 0;
5562}
5563
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5564static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5565acl_fetch_chdr(struct proxy *px, struct session *l4, void *l7, int dir,
5566 struct acl_expr *expr, struct acl_test *test)
5567{
5568 struct http_txn *txn = l7;
5569
5570 if (txn->req.msg_state != HTTP_MSG_BODY)
5571 return 0;
5572 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5573 /* ensure the indexes are not affected */
5574 return 0;
5575
5576 return acl_fetch_hdr(px, l4, txn, txn->req.sol, expr, test);
5577}
5578
5579static int
5580acl_fetch_shdr(struct proxy *px, struct session *l4, void *l7, int dir,
5581 struct acl_expr *expr, struct acl_test *test)
5582{
5583 struct http_txn *txn = l7;
5584
5585 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5586 return 0;
5587
5588 return acl_fetch_hdr(px, l4, txn, txn->rsp.sol, expr, test);
5589}
5590
5591/* 6. Check on HTTP header count. The number of occurrences is returned.
5592 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
5593 */
5594static int
5595acl_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5596 struct acl_expr *expr, struct acl_test *test)
5597{
5598 struct http_txn *txn = l7;
5599 struct hdr_idx *idx = &txn->hdr_idx;
5600 struct hdr_ctx ctx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5601 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5602
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5603 ctx.idx = 0;
5604 cnt = 0;
5605 while (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, &ctx))
5606 cnt++;
5607
5608 test->i = cnt;
5609 test->flags = ACL_TEST_F_VOL_HDR;
5610 return 1;
5611}
5612
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5613static int
5614acl_fetch_chdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5615 struct acl_expr *expr, struct acl_test *test)
5616{
5617 struct http_txn *txn = l7;
5618
5619 if (txn->req.msg_state != HTTP_MSG_BODY)
5620 return 0;
5621 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5622 /* ensure the indexes are not affected */
5623 return 0;
5624
5625 return acl_fetch_hdr_cnt(px, l4, txn, txn->req.sol, expr, test);
5626}
5627
5628static int
5629acl_fetch_shdr_cnt(struct proxy *px, struct session *l4, void *l7, int dir,
5630 struct acl_expr *expr, struct acl_test *test)
5631{
5632 struct http_txn *txn = l7;
5633
5634 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5635 return 0;
5636
5637 return acl_fetch_hdr_cnt(px, l4, txn, txn->rsp.sol, expr, test);
5638}
5639
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5640/* 7. Check on HTTP header's integer value. The integer value is returned.
5641 * FIXME: the type is 'int', it may not be appropriate for everything.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5642 * This generic function is used by both acl_fetch_chdr* and acl_fetch_shdr*.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5643 */
5644static int
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5645acl_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, char *sol,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5646 struct acl_expr *expr, struct acl_test *test)
5647{
5648 struct http_txn *txn = l7;
5649 struct hdr_idx *idx = &txn->hdr_idx;
5650 struct hdr_ctx *ctx = (struct hdr_ctx *)test->ctx.a;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5651
5652 if (!(test->flags & ACL_TEST_F_FETCH_MORE))
5653 /* search for header from the beginning */
5654 ctx->idx = 0;
5655
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5656 if (http_find_header2(expr->arg.str, expr->arg_len, sol, idx, ctx)) {
5657 test->flags |= ACL_TEST_F_FETCH_MORE;
5658 test->flags |= ACL_TEST_F_VOL_HDR;
5659 test->i = strl2ic((char *)ctx->line + ctx->val, ctx->vlen);
5660 return 1;
5661 }
5662
5663 test->flags &= ~ACL_TEST_F_FETCH_MORE;
5664 test->flags |= ACL_TEST_F_VOL_HDR;
5665 return 0;
5666}
5667
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5668static int
5669acl_fetch_chdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5670 struct acl_expr *expr, struct acl_test *test)
5671{
5672 struct http_txn *txn = l7;
5673
5674 if (txn->req.msg_state != HTTP_MSG_BODY)
5675 return 0;
5676 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5677 /* ensure the indexes are not affected */
5678 return 0;
5679
5680 return acl_fetch_hdr_val(px, l4, txn, txn->req.sol, expr, test);
5681}
5682
5683static int
5684acl_fetch_shdr_val(struct proxy *px, struct session *l4, void *l7, int dir,
5685 struct acl_expr *expr, struct acl_test *test)
5686{
5687 struct http_txn *txn = l7;
5688
5689 if (txn->rsp.msg_state != HTTP_MSG_BODY)
5690 return 0;
5691
5692 return acl_fetch_hdr_val(px, l4, txn, txn->rsp.sol, expr, test);
5693}
5694
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5695/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
5696 * the first '/' after the possible hostname, and ends before the possible '?'.
5697 */
5698static int
5699acl_fetch_path(struct proxy *px, struct session *l4, void *l7, int dir,
5700 struct acl_expr *expr, struct acl_test *test)
5701{
5702 struct http_txn *txn = l7;
5703 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]5704
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5705 if (txn->req.msg_state != HTTP_MSG_BODY)
5706 return 0;
5707 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
5708 /* ensure the indexes are not affected */
5709 return 0;
5710
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5711 ptr = txn->req.sol + txn->req.sl.rq.u;
5712 end = ptr + txn->req.sl.rq.u_l;
5713
5714 if (ptr >= end)
5715 return 0;
5716
5717 /* RFC2616, par. 5.1.2 :
5718 * Request-URI = "*" | absuri | abspath | authority
5719 */
5720
5721 if (*ptr == '*')
5722 return 0;
5723
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]5724 if (isalpha((unsigned char)*ptr)) {
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5725 /* this is a scheme as described by RFC3986, par. 3.1 */
5726 ptr++;
5727 while (ptr < end &&
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]5728 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5729 ptr++;
5730 /* skip '://' */
5731 if (ptr == end || *ptr++ != ':')
5732 return 0;
5733 if (ptr == end || *ptr++ != '/')
5734 return 0;
5735 if (ptr == end || *ptr++ != '/')
5736 return 0;
5737 }
5738 /* skip [user[:passwd]@]host[:[port]] */
5739
5740 while (ptr < end && *ptr != '/')
5741 ptr++;
5742
5743 if (ptr == end)
5744 return 0;
5745
5746 /* OK, we got the '/' ! */
5747 test->ptr = ptr;
5748
5749 while (ptr < end && *ptr != '?')
5750 ptr++;
5751
5752 test->len = ptr - test->ptr;
5753
5754 /* we do not need to set READ_ONLY because the data is in a buffer */
5755 test->flags = ACL_TEST_F_VOL_1ST;
5756 return 1;
5757}
5758
5759
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5760
5761/************************************************************************/
5762/* All supported keywords must be declared here. */
5763/************************************************************************/
5764
5765/* Note: must not be declared <const> as its list will be overwritten */
5766static struct acl_kw_list acl_kws = {{ },{
5767 { "method", acl_parse_meth, acl_fetch_meth, acl_match_meth },
5768 { "req_ver", acl_parse_ver, acl_fetch_rqver, acl_match_str },
5769 { "resp_ver", acl_parse_ver, acl_fetch_stver, acl_match_str },
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5770 { "status", acl_parse_int, acl_fetch_stcode, acl_match_int },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5771
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]5772 { "url", acl_parse_str, acl_fetch_url, acl_match_str },
5773 { "url_beg", acl_parse_str, acl_fetch_url, acl_match_beg },
5774 { "url_end", acl_parse_str, acl_fetch_url, acl_match_end },
5775 { "url_sub", acl_parse_str, acl_fetch_url, acl_match_sub },
5776 { "url_dir", acl_parse_str, acl_fetch_url, acl_match_dir },
5777 { "url_dom", acl_parse_str, acl_fetch_url, acl_match_dom },
5778 { "url_reg", acl_parse_reg, acl_fetch_url, acl_match_reg },
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5779
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]5780 { "hdr", acl_parse_str, acl_fetch_chdr, acl_match_str },
5781 { "hdr_reg", acl_parse_reg, acl_fetch_chdr, acl_match_reg },
5782 { "hdr_beg", acl_parse_str, acl_fetch_chdr, acl_match_beg },
5783 { "hdr_end", acl_parse_str, acl_fetch_chdr, acl_match_end },
5784 { "hdr_sub", acl_parse_str, acl_fetch_chdr, acl_match_sub },
5785 { "hdr_dir", acl_parse_str, acl_fetch_chdr, acl_match_dir },
5786 { "hdr_dom", acl_parse_str, acl_fetch_chdr, acl_match_dom },
5787 { "hdr_cnt", acl_parse_int, acl_fetch_chdr_cnt,acl_match_int },
5788 { "hdr_val", acl_parse_int, acl_fetch_chdr_val,acl_match_int },
5789
5790 { "shdr", acl_parse_str, acl_fetch_shdr, acl_match_str },
5791 { "shdr_reg", acl_parse_reg, acl_fetch_shdr, acl_match_reg },
5792 { "shdr_beg", acl_parse_str, acl_fetch_shdr, acl_match_beg },
5793 { "shdr_end", acl_parse_str, acl_fetch_shdr, acl_match_end },
5794 { "shdr_sub", acl_parse_str, acl_fetch_shdr, acl_match_sub },
5795 { "shdr_dir", acl_parse_str, acl_fetch_shdr, acl_match_dir },
5796 { "shdr_dom", acl_parse_str, acl_fetch_shdr, acl_match_dom },
5797 { "shdr_cnt", acl_parse_int, acl_fetch_shdr_cnt,acl_match_int },
5798 { "shdr_val", acl_parse_int, acl_fetch_shdr_val,acl_match_int },
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]5799
5800 { "path", acl_parse_str, acl_fetch_path, acl_match_str },
5801 { "path_reg", acl_parse_reg, acl_fetch_path, acl_match_reg },
5802 { "path_beg", acl_parse_str, acl_fetch_path, acl_match_beg },
5803 { "path_end", acl_parse_str, acl_fetch_path, acl_match_end },
5804 { "path_sub", acl_parse_str, acl_fetch_path, acl_match_sub },
5805 { "path_dir", acl_parse_str, acl_fetch_path, acl_match_dir },
5806 { "path_dom", acl_parse_str, acl_fetch_path, acl_match_dom },
5807
Willy Tarreauf3d25982007-05-08 22:45:09 +0200[diff] [blame]5808 { NULL, NULL, NULL, NULL },
5809
5810#if 0
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5811 { "line", acl_parse_str, acl_fetch_line, acl_match_str },
5812 { "line_reg", acl_parse_reg, acl_fetch_line, acl_match_reg },
5813 { "line_beg", acl_parse_str, acl_fetch_line, acl_match_beg },
5814 { "line_end", acl_parse_str, acl_fetch_line, acl_match_end },
5815 { "line_sub", acl_parse_str, acl_fetch_line, acl_match_sub },
5816 { "line_dir", acl_parse_str, acl_fetch_line, acl_match_dir },
5817 { "line_dom", acl_parse_str, acl_fetch_line, acl_match_dom },
5818
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]5819 { "cook", acl_parse_str, acl_fetch_cook, acl_match_str },
5820 { "cook_reg", acl_parse_reg, acl_fetch_cook, acl_match_reg },
5821 { "cook_beg", acl_parse_str, acl_fetch_cook, acl_match_beg },
5822 { "cook_end", acl_parse_str, acl_fetch_cook, acl_match_end },
5823 { "cook_sub", acl_parse_str, acl_fetch_cook, acl_match_sub },
5824 { "cook_dir", acl_parse_str, acl_fetch_cook, acl_match_dir },
5825 { "cook_dom", acl_parse_str, acl_fetch_cook, acl_match_dom },
5826 { "cook_pst", acl_parse_none, acl_fetch_cook, acl_match_pst },
5827
5828 { "auth_user", acl_parse_str, acl_fetch_user, acl_match_str },
5829 { "auth_regex", acl_parse_reg, acl_fetch_user, acl_match_reg },
5830 { "auth_clear", acl_parse_str, acl_fetch_auth, acl_match_str },
5831 { "auth_md5", acl_parse_str, acl_fetch_auth, acl_match_md5 },
5832 { NULL, NULL, NULL, NULL },
5833#endif
5834}};
5835
5836
5837__attribute__((constructor))
5838static void __http_protocol_init(void)
5839{
5840 acl_register_keywords(&acl_kws);
5841}
5842
5843
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5844/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5845 * Local variables:
5846 * c-indent-level: 8
5847 * c-basic-offset: 8
5848 * End:
5849 */