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git01.mediatek.com / haproxy / 540abe406dbe907790698f313a6bc39478398d54 / . / src / proto_http.c
blob: 7679970810b766ee4da8b8267b888daae1114bc3 [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
37#include <types/capture.h>
38#include <types/client.h>
39#include <types/global.h>
40#include <types/httperr.h>
41#include <types/polling.h>
42#include <types/proxy.h>
43#include <types/server.h>
44
45#include <proto/backend.h>
46#include <proto/buffers.h>
47#include <proto/fd.h>
48#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]49#include <proto/hdr_idx.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]50#include <proto/proto_http.h>
51#include <proto/queue.h>
52#include <proto/session.h>
53#include <proto/task.h>
54
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]55#ifdef CONFIG_HAP_TCPSPLICE
56#include <libtcpsplice.h>
57#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]58
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]59#define DEBUG_PARSE_NO_SPEEDUP
60#undef DEBUG_PARSE_NO_SPEEDUP
61
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]62/* This is used to perform a quick jump as an alternative to a break/continue
63 * instruction. The first argument is the label for normal operation, and the
64 * second one is the break/continue instruction in the no_speedup mode.
65 */
66
67#ifdef DEBUG_PARSE_NO_SPEEDUP
68#define QUICK_JUMP(x,y) y
69#else
70#define QUICK_JUMP(x,y) goto x
71#endif
72
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]73/* This is used by remote monitoring */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]74const char HTTP_200[] =
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]75 "HTTP/1.0 200 OK\r\n"
76 "Cache-Control: no-cache\r\n"
77 "Connection: close\r\n"
78 "Content-Type: text/html\r\n"
79 "\r\n"
80 "<html><body><h1>200 OK</h1>\nHAProxy: service ready.\n</body></html>\n";
81
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]82const struct chunk http_200_chunk = {
83 .str = (char *)&HTTP_200,
84 .len = sizeof(HTTP_200)-1
85};
86
87const char *HTTP_302 =
88 "HTTP/1.0 302 Found\r\n"
89 "Cache-Control: no-cache\r\n"
90 "Connection: close\r\n"
91 "Location: "; /* not terminated since it will be concatenated with the URL */
92
93/* same as 302 except that the browser MUST retry with the GET method */
94const char *HTTP_303 =
95 "HTTP/1.0 303 See Other\r\n"
96 "Cache-Control: no-cache\r\n"
97 "Connection: close\r\n"
98 "Location: "; /* not terminated since it will be concatenated with the URL */
99
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]100/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
101const char *HTTP_401_fmt =
102 "HTTP/1.0 401 Unauthorized\r\n"
103 "Cache-Control: no-cache\r\n"
104 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]105 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]106 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
107 "\r\n"
108 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
109
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]110
111const int http_err_codes[HTTP_ERR_SIZE] = {
112 [HTTP_ERR_400] = 400,
113 [HTTP_ERR_403] = 403,
114 [HTTP_ERR_408] = 408,
115 [HTTP_ERR_500] = 500,
116 [HTTP_ERR_502] = 502,
117 [HTTP_ERR_503] = 503,
118 [HTTP_ERR_504] = 504,
119};
120
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]121static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]122 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]123 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]124 "Cache-Control: no-cache\r\n"
125 "Connection: close\r\n"
126 "Content-Type: text/html\r\n"
127 "\r\n"
128 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
129
130 [HTTP_ERR_403] =
131 "HTTP/1.0 403 Forbidden\r\n"
132 "Cache-Control: no-cache\r\n"
133 "Connection: close\r\n"
134 "Content-Type: text/html\r\n"
135 "\r\n"
136 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
137
138 [HTTP_ERR_408] =
139 "HTTP/1.0 408 Request Time-out\r\n"
140 "Cache-Control: no-cache\r\n"
141 "Connection: close\r\n"
142 "Content-Type: text/html\r\n"
143 "\r\n"
144 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
145
146 [HTTP_ERR_500] =
147 "HTTP/1.0 500 Server Error\r\n"
148 "Cache-Control: no-cache\r\n"
149 "Connection: close\r\n"
150 "Content-Type: text/html\r\n"
151 "\r\n"
152 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
153
154 [HTTP_ERR_502] =
155 "HTTP/1.0 502 Bad Gateway\r\n"
156 "Cache-Control: no-cache\r\n"
157 "Connection: close\r\n"
158 "Content-Type: text/html\r\n"
159 "\r\n"
160 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
161
162 [HTTP_ERR_503] =
163 "HTTP/1.0 503 Service Unavailable\r\n"
164 "Cache-Control: no-cache\r\n"
165 "Connection: close\r\n"
166 "Content-Type: text/html\r\n"
167 "\r\n"
168 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
169
170 [HTTP_ERR_504] =
171 "HTTP/1.0 504 Gateway Time-out\r\n"
172 "Cache-Control: no-cache\r\n"
173 "Connection: close\r\n"
174 "Content-Type: text/html\r\n"
175 "\r\n"
176 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
177
178};
179
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]180/* We must put the messages here since GCC cannot initialize consts depending
181 * on strlen().
182 */
183struct chunk http_err_chunks[HTTP_ERR_SIZE];
184
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]185#define FD_SETS_ARE_BITFIELDS
186#ifdef FD_SETS_ARE_BITFIELDS
187/*
188 * This map is used with all the FD_* macros to check whether a particular bit
189 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
190 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
191 * byte should be encoded. Be careful to always pass bytes from 0 to 255
192 * exclusively to the macros.
193 */
194fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
195fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
196
197#else
198#error "Check if your OS uses bitfields for fd_sets"
199#endif
200
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]201void init_proto_http()
202{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]203 int i;
204 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]205 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]206
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]207 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
208 if (!http_err_msgs[msg]) {
209 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
210 abort();
211 }
212
213 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
214 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
215 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]216
217 /* initialize the log header encoding map : '{|}"#' should be encoded with
218 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
219 * URL encoding only requires '"', '#' to be encoded as well as non-
220 * printable characters above.
221 */
222 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
223 memset(url_encode_map, 0, sizeof(url_encode_map));
224 for (i = 0; i < 32; i++) {
225 FD_SET(i, hdr_encode_map);
226 FD_SET(i, url_encode_map);
227 }
228 for (i = 127; i < 256; i++) {
229 FD_SET(i, hdr_encode_map);
230 FD_SET(i, url_encode_map);
231 }
232
233 tmp = "\"#{|}";
234 while (*tmp) {
235 FD_SET(*tmp, hdr_encode_map);
236 tmp++;
237 }
238
239 tmp = "\"#";
240 while (*tmp) {
241 FD_SET(*tmp, url_encode_map);
242 tmp++;
243 }
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]244}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]245
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]246/*
247 * We have 26 list of methods (1 per first letter), each of which can have
248 * up to 3 entries (2 valid, 1 null).
249 */
250struct http_method_desc {
251 http_meth_t meth;
252 int len;
253 const char text[8];
254};
255
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]256const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]257 ['C' - 'A'] = {
258 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
259 },
260 ['D' - 'A'] = {
261 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
262 },
263 ['G' - 'A'] = {
264 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
265 },
266 ['H' - 'A'] = {
267 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
268 },
269 ['P' - 'A'] = {
270 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
271 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
272 },
273 ['T' - 'A'] = {
274 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
275 },
276 /* rest is empty like this :
277 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
278 */
279};
280
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]281/* It is about twice as fast on recent architectures to lookup a byte in a
282 * table than two perform a boolean AND or OR between two tests. Refer to
283 * RFC2616 for those chars.
284 */
285
286const char http_is_spht[256] = {
287 [' '] = 1, ['\t'] = 1,
288};
289
290const char http_is_crlf[256] = {
291 ['\r'] = 1, ['\n'] = 1,
292};
293
294const char http_is_lws[256] = {
295 [' '] = 1, ['\t'] = 1,
296 ['\r'] = 1, ['\n'] = 1,
297};
298
299const char http_is_sep[256] = {
300 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
301 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
302 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
303 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
304 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
305};
306
307const char http_is_ctl[256] = {
308 [0 ... 31] = 1,
309 [127] = 1,
310};
311
312/*
313 * A token is any ASCII char that is neither a separator nor a CTL char.
314 * Do not overwrite values in assignment since gcc-2.95 will not handle
315 * them correctly. Instead, define every non-CTL char's status.
316 */
317const char http_is_token[256] = {
318 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
319 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
320 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
321 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
322 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
323 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
324 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
325 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
326 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
327 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
328 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
329 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
330 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
331 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
332 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
333 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
334 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
335 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
336 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
337 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
338 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
339 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
340 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
341 ['|'] = 1, ['}'] = 0, ['~'] = 1,
342};
343
344
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]345/*
346 * An http ver_token is any ASCII which can be found in an HTTP version,
347 * which includes 'H', 'T', 'P', '/', '.' and any digit.
348 */
349const char http_is_ver_token[256] = {
350 ['.'] = 1, ['/'] = 1,
351 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
352 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
353 ['H'] = 1, ['P'] = 1, ['T'] = 1,
354};
355
356
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]357#ifdef DEBUG_FULL
358static char *cli_stnames[5] = {"HDR", "DAT", "SHR", "SHW", "CLS" };
359static char *srv_stnames[7] = {"IDL", "CON", "HDR", "DAT", "SHR", "SHW", "CLS" };
360#endif
361
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]362static void http_sess_log(struct session *s);
363
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]364/*
365 * Adds a header and its CRLF at the tail of buffer <b>, just before the last
366 * CRLF. Text length is measured first, so it cannot be NULL.
367 * The header is also automatically added to the index <hdr_idx>, and the end
368 * of headers is automatically adjusted. The number of bytes added is returned
369 * on success, otherwise <0 is returned indicating an error.
370 */
371int http_header_add_tail(struct buffer *b, struct http_msg *msg,
372 struct hdr_idx *hdr_idx, const char *text)
373{
374 int bytes, len;
375
376 len = strlen(text);
377 bytes = buffer_insert_line2(b, b->data + msg->eoh, text, len);
378 if (!bytes)
379 return -1;
380 msg->eoh += bytes;
381 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
382}
383
384/*
385 * Adds a header and its CRLF at the tail of buffer <b>, just before the last
386 * CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
387 * the buffer is only opened and the space reserved, but nothing is copied.
388 * The header is also automatically added to the index <hdr_idx>, and the end
389 * of headers is automatically adjusted. The number of bytes added is returned
390 * on success, otherwise <0 is returned indicating an error.
391 */
392int http_header_add_tail2(struct buffer *b, struct http_msg *msg,
393 struct hdr_idx *hdr_idx, const char *text, int len)
394{
395 int bytes;
396
397 bytes = buffer_insert_line2(b, b->data + msg->eoh, text, len);
398 if (!bytes)
399 return -1;
400 msg->eoh += bytes;
401 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
402}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]403
404/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]405 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
406 * If so, returns the position of the first non-space character relative to
407 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
408 * to return a pointer to the place after the first space. Returns 0 if the
409 * header name does not match. Checks are case-insensitive.
410 */
411int http_header_match2(const char *hdr, const char *end,
412 const char *name, int len)
413{
414 const char *val;
415
416 if (hdr + len >= end)
417 return 0;
418 if (hdr[len] != ':')
419 return 0;
420 if (strncasecmp(hdr, name, len) != 0)
421 return 0;
422 val = hdr + len + 1;
423 while (val < end && HTTP_IS_SPHT(*val))
424 val++;
425 if ((val >= end) && (len + 2 <= end - hdr))
426 return len + 2; /* we may replace starting from second space */
427 return val - hdr;
428}
429
430/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]431 * returns a message to the client ; the connection is shut down for read,
432 * and the request is cleared so that no server connection can be initiated.
433 * The client must be in a valid state for this (HEADER, DATA ...).
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]434 * Nothing is performed on the server side. The message is contained in a
435 * "chunk". If it is null, then an empty message is used.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]436 * The reply buffer doesn't need to be empty before this.
437 */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]438void client_retnclose(struct session *s, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]439{
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]440 EV_FD_CLR(s->cli_fd, DIR_RD);
441 EV_FD_SET(s->cli_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]442 tv_eternity(&s->req->rex);
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]443 if (s->fe->clitimeout)
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]444 tv_ms_add(&s->rep->wex, &now, s->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]445 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]446 tv_eternity(&s->rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]447 s->cli_state = CL_STSHUTR;
448 buffer_flush(s->rep);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]449 if (msg->len)
450 buffer_write(s->rep, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]451 s->req->l = 0;
452}
453
454
455/*
456 * returns a message into the rep buffer, and flushes the req buffer.
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]457 * The reply buffer doesn't need to be empty before this. The message
458 * is contained in a "chunk". If it is null, then an empty message is
459 * used.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]460 */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]461void client_return(struct session *s, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]462{
463 buffer_flush(s->rep);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]464 if (msg->len)
465 buffer_write(s->rep, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]466 s->req->l = 0;
467}
468
469
470/* This function turns the server state into the SV_STCLOSE, and sets
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]471 * indicators accordingly. Note that if <status> is 0, or if the message
472 * pointer is NULL, then no message is returned.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]473 */
474void srv_close_with_err(struct session *t, int err, int finst,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]475 int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]476{
477 t->srv_state = SV_STCLOSE;
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]478 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]479 t->txn.status = status;
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]480 if (t->fe->mode == PR_MODE_HTTP)
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]481 client_return(t, msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]482 }
483 if (!(t->flags & SN_ERR_MASK))
484 t->flags |= err;
485 if (!(t->flags & SN_FINST_MASK))
486 t->flags |= finst;
487}
488
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]489/* This function returns the appropriate error location for the given session
490 * and message.
491 */
492
493struct chunk *error_message(struct session *s, int msgnum)
494{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]495 if (s->be->errmsg[msgnum].str)
496 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]497 else if (s->fe->errmsg[msgnum].str)
498 return &s->fe->errmsg[msgnum];
499 else
500 return &http_err_chunks[msgnum];
501}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]502
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]503/*
504 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
505 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
506 */
507static http_meth_t find_http_meth(const char *str, const int len)
508{
509 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]510 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]511
512 m = ((unsigned)*str - 'A');
513
514 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]515 for (h = http_methods[m]; h->len > 0; h++) {
516 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]517 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]518 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]519 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]520 };
521 return HTTP_METH_OTHER;
522 }
523 return HTTP_METH_NONE;
524
525}
526
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]527/* Processes the client and server jobs of a session task, then
528 * puts it back to the wait queue in a clean state, or
529 * cleans up its resources if it must be deleted. Returns
530 * the time the task accepts to wait, or TIME_ETERNITY for
531 * infinity.
532 */
533int process_session(struct task *t)
534{
535 struct session *s = t->context;
536 int fsm_resync = 0;
537
538 do {
539 fsm_resync = 0;
540 //fprintf(stderr,"before_cli:cli=%d, srv=%d\n", s->cli_state, s->srv_state);
541 fsm_resync |= process_cli(s);
542 //fprintf(stderr,"cli/srv:cli=%d, srv=%d\n", s->cli_state, s->srv_state);
543 fsm_resync |= process_srv(s);
544 //fprintf(stderr,"after_srv:cli=%d, srv=%d\n", s->cli_state, s->srv_state);
545 } while (fsm_resync);
546
Willy Tarreauf41d4b12007-04-28 23:26:14 +0200[diff] [blame]547 if (likely(s->cli_state != CL_STCLOSE || s->srv_state != SV_STCLOSE)) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]548 s->req->flags &= BF_CLEAR_READ & BF_CLEAR_WRITE;
549 s->rep->flags &= BF_CLEAR_READ & BF_CLEAR_WRITE;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]550
Willy Tarreaua6a6a932007-04-28 22:40:08 +0200[diff] [blame]551 t->expire = s->req->rex;
552 tv_min(&t->expire, &s->req->rex, &s->req->wex);
553 tv_bound(&t->expire, &s->req->cex);
554 tv_bound(&t->expire, &s->rep->rex);
555 tv_bound(&t->expire, &s->rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]556
557 /* restore t to its place in the task list */
558 task_queue(t);
559
560#ifdef DEBUG_FULL
561 /* DEBUG code : this should never ever happen, otherwise it indicates
562 * that a task still has something to do and will provoke a quick loop.
563 */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]564 if (tv_ms_remain2(&now, &t->expire) <= 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]565 exit(100);
566#endif
567
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]568 return tv_ms_remain2(&now, &t->expire); /* nothing more to do */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]569 }
570
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]571 s->fe->feconn--;
572 if (s->flags & SN_BE_ASSIGNED)
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]573 s->be->beconn--;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]574 actconn--;
575
Willy Tarreauf41d4b12007-04-28 23:26:14 +0200[diff] [blame]576 if (unlikely((global.mode & MODE_DEBUG) &&
577 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]578 int len;
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]579 len = sprintf(trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]580 s->uniq_id, s->be->id,
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]581 (unsigned short)s->cli_fd, (unsigned short)s->srv_fd);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]582 write(1, trash, len);
583 }
584
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]585 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]586 if (s->req != NULL)
587 s->logs.bytes_in = s->req->total;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]588 if (s->rep != NULL)
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]589 s->logs.bytes_out = s->rep->total;
590
591 s->fe->bytes_in += s->logs.bytes_in;
592 s->fe->bytes_out += s->logs.bytes_out;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]593 if (s->be != s->fe) {
594 s->be->bytes_in += s->logs.bytes_in;
595 s->be->bytes_out += s->logs.bytes_out;
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]596 }
597 if (s->srv) {
598 s->srv->bytes_in += s->logs.bytes_in;
599 s->srv->bytes_out += s->logs.bytes_out;
600 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]601
602 /* let's do a final log if we need it */
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]603 if (s->logs.logwait &&
604 !(s->flags & SN_MONITOR) &&
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]605 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
606 if (s->fe->to_log & LW_REQ)
607 http_sess_log(s);
608 else
609 tcp_sess_log(s);
610 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]611
612 /* the task MUST not be in the run queue anymore */
613 task_delete(t);
614 session_free(s);
615 task_free(t);
616 return TIME_ETERNITY; /* rest in peace for eternity */
617}
618
619
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]620extern const char sess_term_cond[8];
621extern const char sess_fin_state[8];
622extern const char *monthname[12];
623const char sess_cookie[4] = "NIDV"; /* No cookie, Invalid cookie, cookie for a Down server, Valid cookie */
624const char sess_set_cookie[8] = "N1I3PD5R"; /* No set-cookie, unknown, Set-Cookie Inserted, unknown,
625 Set-cookie seen and left unchanged (passive), Set-cookie Deleted,
626 unknown, Set-cookie Rewritten */
627void **pool_requri = NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]628
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]629/*
630 * send a log for the session when we have enough info about it.
631 * Will not log if the frontend has no log defined.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]632 */
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]633static void http_sess_log(struct session *s)
634{
635 char pn[INET6_ADDRSTRLEN + strlen(":65535")];
636 struct proxy *fe = s->fe;
637 struct proxy *be = s->be;
638 struct proxy *prx_log;
639 struct http_txn *txn = &s->txn;
640 int tolog;
641 char *uri, *h;
642 char *svid;
643 struct tm *tm;
644 static char tmpline[MAX_SYSLOG_LEN];
645 int hdr;
646
647 if (fe->logfac1 < 0 && fe->logfac2 < 0)
648 return;
649 prx_log = fe;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]650
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]651 if (s->cli_addr.ss_family == AF_INET)
652 inet_ntop(AF_INET,
653 (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
654 pn, sizeof(pn));
655 else
656 inet_ntop(AF_INET6,
657 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
658 pn, sizeof(pn));
659
660 tm = localtime((time_t *)&s->logs.tv_accept.tv_sec);
661
662
663 /* FIXME: let's limit ourselves to frontend logging for now. */
664 tolog = fe->to_log;
665
666 h = tmpline;
667 if (fe->to_log & LW_REQHDR &&
668 txn->req.cap &&
669 (h < tmpline + sizeof(tmpline) - 10)) {
670 *(h++) = ' ';
671 *(h++) = '{';
672 for (hdr = 0; hdr < fe->nb_req_cap; hdr++) {
673 if (hdr)
674 *(h++) = '|';
675 if (txn->req.cap[hdr] != NULL)
676 h = encode_string(h, tmpline + sizeof(tmpline) - 7,
677 '#', hdr_encode_map, txn->req.cap[hdr]);
678 }
679 *(h++) = '}';
680 }
681
682 if (fe->to_log & LW_RSPHDR &&
683 txn->rsp.cap &&
684 (h < tmpline + sizeof(tmpline) - 7)) {
685 *(h++) = ' ';
686 *(h++) = '{';
687 for (hdr = 0; hdr < fe->nb_rsp_cap; hdr++) {
688 if (hdr)
689 *(h++) = '|';
690 if (txn->rsp.cap[hdr] != NULL)
691 h = encode_string(h, tmpline + sizeof(tmpline) - 4,
692 '#', hdr_encode_map, txn->rsp.cap[hdr]);
693 }
694 *(h++) = '}';
695 }
696
697 if (h < tmpline + sizeof(tmpline) - 4) {
698 *(h++) = ' ';
699 *(h++) = '"';
700 uri = txn->uri ? txn->uri : "<BADREQ>";
701 h = encode_string(h, tmpline + sizeof(tmpline) - 1,
702 '#', url_encode_map, uri);
703 *(h++) = '"';
704 }
705 *h = '\0';
706
707 svid = (tolog & LW_SVID) ?
708 (s->data_source != DATA_SRC_STATS) ?
709 (s->srv != NULL) ? s->srv->id : "<NOSRV>" : "<STATS>" : "-";
710
711 send_log(prx_log, LOG_INFO,
712 "%s:%d [%02d/%s/%04d:%02d:%02d:%02d.%03d]"
713 " %s %s/%s %d/%d/%d/%d/%s%d %d %s%lld"
714 " %s %s %c%c%c%c %d/%d/%d/%d %d/%d%s\n",
715 pn,
716 (s->cli_addr.ss_family == AF_INET) ?
717 ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port) :
718 ntohs(((struct sockaddr_in6 *)&s->cli_addr)->sin6_port),
719 tm->tm_mday, monthname[tm->tm_mon], tm->tm_year+1900,
720 tm->tm_hour, tm->tm_min, tm->tm_sec, s->logs.tv_accept.tv_usec/1000,
721 fe->id, be->id, svid,
722 s->logs.t_request,
723 (s->logs.t_queue >= 0) ? s->logs.t_queue - s->logs.t_request : -1,
724 (s->logs.t_connect >= 0) ? s->logs.t_connect - s->logs.t_queue : -1,
725 (s->logs.t_data >= 0) ? s->logs.t_data - s->logs.t_connect : -1,
726 (tolog & LW_BYTES) ? "" : "+", s->logs.t_close,
727 txn->status,
728 (tolog & LW_BYTES) ? "" : "+", s->logs.bytes_in,
729 txn->cli_cookie ? txn->cli_cookie : "-",
730 txn->srv_cookie ? txn->srv_cookie : "-",
731 sess_term_cond[(s->flags & SN_ERR_MASK) >> SN_ERR_SHIFT],
732 sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_FINST_SHIFT],
733 (be->options & PR_O_COOK_ANY) ? sess_cookie[(txn->flags & TX_CK_MASK) >> TX_CK_SHIFT] : '-',
734 (be->options & PR_O_COOK_ANY) ? sess_set_cookie[(txn->flags & TX_SCK_MASK) >> TX_SCK_SHIFT] : '-',
735 actconn, fe->feconn, be->beconn, s->srv ? s->srv->cur_sess : 0,
736 s->logs.srv_queue_size, s->logs.prx_queue_size, tmpline);
737
738 s->logs.logwait = 0;
739}
740
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]741
742/*
743 * Capture headers from message starting at <som> according to header list
744 * <cap_hdr>, and fill the <idx> structure appropriately.
745 */
746void capture_headers(char *som, struct hdr_idx *idx,
747 char **cap, struct cap_hdr *cap_hdr)
748{
749 char *eol, *sol, *col, *sov;
750 int cur_idx;
751 struct cap_hdr *h;
752 int len;
753
754 sol = som + hdr_idx_first_pos(idx);
755 cur_idx = hdr_idx_first_idx(idx);
756
757 while (cur_idx) {
758 eol = sol + idx->v[cur_idx].len;
759
760 col = sol;
761 while (col < eol && *col != ':')
762 col++;
763
764 sov = col + 1;
765 while (sov < eol && http_is_lws[(unsigned char)*sov])
766 sov++;
767
768 for (h = cap_hdr; h; h = h->next) {
769 if ((h->namelen == col - sol) &&
770 (strncasecmp(sol, h->name, h->namelen) == 0)) {
771 if (cap[h->index] == NULL)
772 cap[h->index] =
773 pool_alloc_from(h->pool, h->len + 1);
774
775 if (cap[h->index] == NULL) {
776 Alert("HTTP capture : out of memory.\n");
777 continue;
778 }
779
780 len = eol - sov;
781 if (len > h->len)
782 len = h->len;
783
784 memcpy(cap[h->index], sov, len);
785 cap[h->index][len]=0;
786 }
787 }
788 sol = eol + idx->v[cur_idx].cr + 1;
789 cur_idx = idx->v[cur_idx].next;
790 }
791}
792
793
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]794/* either we find an LF at <ptr> or we jump to <bad>.
795 */
796#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
797
798/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
799 * otherwise to <http_msg_ood> with <state> set to <st>.
800 */
801#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
802 ptr++; \
803 if (likely(ptr < end)) \
804 goto good; \
805 else { \
806 state = (st); \
807 goto http_msg_ood; \
808 } \
809 } while (0)
810
811
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]812/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]813 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]814 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
815 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
816 * will give undefined results.
817 * Note that it is upon the caller's responsibility to ensure that ptr < end,
818 * and that msg->sol points to the beginning of the response.
819 * If a complete line is found (which implies that at least one CR or LF is
820 * found before <end>, the updated <ptr> is returned, otherwise NULL is
821 * returned indicating an incomplete line (which does not mean that parts have
822 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
823 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
824 * upon next call.
825 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]826 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]827 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
828 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]829 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]830 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]831const char *http_parse_stsline(struct http_msg *msg, const char *msg_buf, int state,
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]832 const char *ptr, const char *end,
833 char **ret_ptr, int *ret_state)
834{
835 __label__
836 http_msg_rpver,
837 http_msg_rpver_sp,
838 http_msg_rpcode,
839 http_msg_rpcode_sp,
840 http_msg_rpreason,
841 http_msg_rpline_eol,
842 http_msg_ood, /* out of data */
843 http_msg_invalid;
844
845 switch (state) {
846 http_msg_rpver:
847 case HTTP_MSG_RPVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]848 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]849 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
850
851 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]852 msg->sl.st.v_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]853 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
854 }
855 goto http_msg_invalid;
856
857 http_msg_rpver_sp:
858 case HTTP_MSG_RPVER_SP:
859 if (likely(!HTTP_IS_LWS(*ptr))) {
860 msg->sl.st.c = ptr - msg_buf;
861 goto http_msg_rpcode;
862 }
863 if (likely(HTTP_IS_SPHT(*ptr)))
864 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
865 /* so it's a CR/LF, this is invalid */
866 goto http_msg_invalid;
867
868 http_msg_rpcode:
869 case HTTP_MSG_RPCODE:
870 if (likely(!HTTP_IS_LWS(*ptr)))
871 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
872
873 if (likely(HTTP_IS_SPHT(*ptr))) {
874 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
875 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
876 }
877
878 /* so it's a CR/LF, so there is no reason phrase */
879 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
880 http_msg_rsp_reason:
881 /* FIXME: should we support HTTP responses without any reason phrase ? */
882 msg->sl.st.r = ptr - msg_buf;
883 msg->sl.st.r_l = 0;
884 goto http_msg_rpline_eol;
885
886 http_msg_rpcode_sp:
887 case HTTP_MSG_RPCODE_SP:
888 if (likely(!HTTP_IS_LWS(*ptr))) {
889 msg->sl.st.r = ptr - msg_buf;
890 goto http_msg_rpreason;
891 }
892 if (likely(HTTP_IS_SPHT(*ptr)))
893 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
894 /* so it's a CR/LF, so there is no reason phrase */
895 goto http_msg_rsp_reason;
896
897 http_msg_rpreason:
898 case HTTP_MSG_RPREASON:
899 if (likely(!HTTP_IS_CRLF(*ptr)))
900 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
901 msg->sl.st.r_l = (ptr - msg_buf) - msg->sl.st.r;
902 http_msg_rpline_eol:
903 /* We have seen the end of line. Note that we do not
904 * necessarily have the \n yet, but at least we know that we
905 * have EITHER \r OR \n, otherwise the response would not be
906 * complete. We can then record the response length and return
907 * to the caller which will be able to register it.
908 */
909 msg->sl.st.l = ptr - msg->sol;
910 return ptr;
911
912#ifdef DEBUG_FULL
913 default:
914 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
915 exit(1);
916#endif
917 }
918
919 http_msg_ood:
920 /* out of data */
921 if (ret_state)
922 *ret_state = state;
923 if (ret_ptr)
924 *ret_ptr = (char *)ptr;
925 return NULL;
926
927 http_msg_invalid:
928 /* invalid message */
929 if (ret_state)
930 *ret_state = HTTP_MSG_ERROR;
931 return NULL;
932}
933
934
935/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]936 * This function parses a request line between <ptr> and <end>, starting with
937 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
938 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
939 * will give undefined results.
940 * Note that it is upon the caller's responsibility to ensure that ptr < end,
941 * and that msg->sol points to the beginning of the request.
942 * If a complete line is found (which implies that at least one CR or LF is
943 * found before <end>, the updated <ptr> is returned, otherwise NULL is
944 * returned indicating an incomplete line (which does not mean that parts have
945 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
946 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
947 * upon next call.
948 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]949 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]950 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
951 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]952 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]953 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]954const char *http_parse_reqline(struct http_msg *msg, const char *msg_buf, int state,
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]955 const char *ptr, const char *end,
956 char **ret_ptr, int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]957{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]958 __label__
959 http_msg_rqmeth,
960 http_msg_rqmeth_sp,
961 http_msg_rquri,
962 http_msg_rquri_sp,
963 http_msg_rqver,
964 http_msg_rqline_eol,
965 http_msg_ood, /* out of data */
966 http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]967
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]968 switch (state) {
969 http_msg_rqmeth:
970 case HTTP_MSG_RQMETH:
971 if (likely(HTTP_IS_TOKEN(*ptr)))
972 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]973
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]974 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]975 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]976 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
977 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]978
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]979 if (likely(HTTP_IS_CRLF(*ptr))) {
980 /* HTTP 0.9 request */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]981 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]982 http_msg_req09_uri:
983 msg->sl.rq.u = ptr - msg_buf;
984 http_msg_req09_uri_e:
985 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
986 http_msg_req09_ver:
987 msg->sl.rq.v = ptr - msg_buf;
988 msg->sl.rq.v_l = 0;
989 goto http_msg_rqline_eol;
990 }
991 goto http_msg_invalid;
992
993 http_msg_rqmeth_sp:
994 case HTTP_MSG_RQMETH_SP:
995 if (likely(!HTTP_IS_LWS(*ptr))) {
996 msg->sl.rq.u = ptr - msg_buf;
997 goto http_msg_rquri;
998 }
999 if (likely(HTTP_IS_SPHT(*ptr)))
1000 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1001 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1002 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1003
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1004 http_msg_rquri:
1005 case HTTP_MSG_RQURI:
1006 if (likely(!HTTP_IS_LWS(*ptr)))
1007 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1008
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1009 if (likely(HTTP_IS_SPHT(*ptr))) {
1010 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1011 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1012 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1013
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1014 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1015 goto http_msg_req09_uri_e;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1016
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1017 http_msg_rquri_sp:
1018 case HTTP_MSG_RQURI_SP:
1019 if (likely(!HTTP_IS_LWS(*ptr))) {
1020 msg->sl.rq.v = ptr - msg_buf;
1021 goto http_msg_rqver;
1022 }
1023 if (likely(HTTP_IS_SPHT(*ptr)))
1024 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1025 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1026 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1027
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1028 http_msg_rqver:
1029 case HTTP_MSG_RQVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1030 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1031 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1032
1033 if (likely(HTTP_IS_CRLF(*ptr))) {
1034 msg->sl.rq.v_l = (ptr - msg_buf) - msg->sl.rq.v;
1035 http_msg_rqline_eol:
1036 /* We have seen the end of line. Note that we do not
1037 * necessarily have the \n yet, but at least we know that we
1038 * have EITHER \r OR \n, otherwise the request would not be
1039 * complete. We can then record the request length and return
1040 * to the caller which will be able to register it.
1041 */
1042 msg->sl.rq.l = ptr - msg->sol;
1043 return ptr;
1044 }
1045
1046 /* neither an HTTP_VER token nor a CRLF */
1047 goto http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1048
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1049#ifdef DEBUG_FULL
1050 default:
1051 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1052 exit(1);
1053#endif
1054 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1055
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1056 http_msg_ood:
1057 /* out of data */
1058 if (ret_state)
1059 *ret_state = state;
1060 if (ret_ptr)
1061 *ret_ptr = (char *)ptr;
1062 return NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1063
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1064 http_msg_invalid:
1065 /* invalid message */
1066 if (ret_state)
1067 *ret_state = HTTP_MSG_ERROR;
1068 return NULL;
1069}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1070
1071
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1072/*
1073 * This function parses an HTTP message, either a request or a response,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1074 * depending on the initial msg->msg_state. It can be preempted everywhere
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1075 * when data are missing and recalled at the exact same location with no
1076 * information loss. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1077 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
1078 * fields.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1079 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1080void http_msg_analyzer(struct buffer *buf, struct http_msg *msg, struct hdr_idx *idx)
1081{
1082 __label__
1083 http_msg_rqbefore,
1084 http_msg_rqbefore_cr,
1085 http_msg_rqmeth,
1086 http_msg_rqline_end,
1087 http_msg_hdr_first,
1088 http_msg_hdr_name,
1089 http_msg_hdr_l1_sp,
1090 http_msg_hdr_l1_lf,
1091 http_msg_hdr_l1_lws,
1092 http_msg_hdr_val,
1093 http_msg_hdr_l2_lf,
1094 http_msg_hdr_l2_lws,
1095 http_msg_complete_header,
1096 http_msg_last_lf,
1097 http_msg_ood, /* out of data */
1098 http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1099
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1100 int state; /* updated only when leaving the FSM */
1101 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1102
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1103 state = msg->msg_state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1104 ptr = buf->lr;
1105 end = buf->r;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1106
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1107 if (unlikely(ptr >= end))
1108 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1109
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1110 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1111 /*
1112 * First, states that are specific to the response only.
1113 * We check them first so that request and headers are
1114 * closer to each other (accessed more often).
1115 */
1116 http_msg_rpbefore:
1117 case HTTP_MSG_RPBEFORE:
1118 if (likely(HTTP_IS_TOKEN(*ptr))) {
1119 if (likely(ptr == buf->data)) {
1120 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1121 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1122 } else {
1123#if PARSE_PRESERVE_EMPTY_LINES
1124 /* only skip empty leading lines, don't remove them */
1125 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1126 msg->som = ptr - buf->data;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1127#else
1128 /* Remove empty leading lines, as recommended by
1129 * RFC2616. This takes a lot of time because we
1130 * must move all the buffer backwards, but this
1131 * is rarely needed. The method above will be
1132 * cleaner when we'll be able to start sending
1133 * the request from any place in the buffer.
1134 */
1135 buf->lr = ptr;
1136 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1137 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1138 msg->sol = buf->data;
1139 ptr = buf->data;
1140 end = buf->r;
1141#endif
1142 }
1143 hdr_idx_init(idx);
1144 state = HTTP_MSG_RPVER;
1145 goto http_msg_rpver;
1146 }
1147
1148 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1149 goto http_msg_invalid;
1150
1151 if (unlikely(*ptr == '\n'))
1152 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1153 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1154 /* stop here */
1155
1156 http_msg_rpbefore_cr:
1157 case HTTP_MSG_RPBEFORE_CR:
1158 EXPECT_LF_HERE(ptr, http_msg_invalid);
1159 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1160 /* stop here */
1161
1162 http_msg_rpver:
1163 case HTTP_MSG_RPVER:
1164 case HTTP_MSG_RPVER_SP:
1165 case HTTP_MSG_RPCODE:
1166 case HTTP_MSG_RPCODE_SP:
1167 case HTTP_MSG_RPREASON:
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1168 ptr = (char *)http_parse_stsline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1169 &buf->lr, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1170 if (unlikely(!ptr))
1171 return;
1172
1173 /* we have a full response and we know that we have either a CR
1174 * or an LF at <ptr>.
1175 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1176 //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]1177 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1178
1179 msg->sol = ptr;
1180 if (likely(*ptr == '\r'))
1181 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1182 goto http_msg_rpline_end;
1183
1184 http_msg_rpline_end:
1185 case HTTP_MSG_RPLINE_END:
1186 /* msg->sol must point to the first of CR or LF. */
1187 EXPECT_LF_HERE(ptr, http_msg_invalid);
1188 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1189 /* stop here */
1190
1191 /*
1192 * Second, states that are specific to the request only
1193 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1194 http_msg_rqbefore:
1195 case HTTP_MSG_RQBEFORE:
1196 if (likely(HTTP_IS_TOKEN(*ptr))) {
1197 if (likely(ptr == buf->data)) {
1198 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1199 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1200 } else {
1201#if PARSE_PRESERVE_EMPTY_LINES
1202 /* only skip empty leading lines, don't remove them */
1203 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1204 msg->som = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1205#else
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1206 /* Remove empty leading lines, as recommended by
1207 * RFC2616. This takes a lot of time because we
1208 * must move all the buffer backwards, but this
1209 * is rarely needed. The method above will be
1210 * cleaner when we'll be able to start sending
1211 * the request from any place in the buffer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1212 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1213 buf->lr = ptr;
1214 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1215 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1216 msg->sol = buf->data;
1217 ptr = buf->data;
1218 end = buf->r;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1219#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1220 }
Willy Tarreauf0d058e2007-01-25 12:03:42 +0100[diff] [blame]1221 /* we will need this when keep-alive will be supported
1222 hdr_idx_init(idx);
1223 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1224 state = HTTP_MSG_RQMETH;
1225 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1226 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1227
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1228 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1229 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1230
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1231 if (unlikely(*ptr == '\n'))
1232 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1233 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1234 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1235
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1236 http_msg_rqbefore_cr:
1237 case HTTP_MSG_RQBEFORE_CR:
1238 EXPECT_LF_HERE(ptr, http_msg_invalid);
1239 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1240 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1241
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1242 http_msg_rqmeth:
1243 case HTTP_MSG_RQMETH:
1244 case HTTP_MSG_RQMETH_SP:
1245 case HTTP_MSG_RQURI:
1246 case HTTP_MSG_RQURI_SP:
1247 case HTTP_MSG_RQVER:
1248 ptr = (char *)http_parse_reqline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1249 &buf->lr, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1250 if (unlikely(!ptr))
1251 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1252
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1253 /* we have a full request and we know that we have either a CR
1254 * or an LF at <ptr>.
1255 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1256 //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]1257 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1258
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1259 msg->sol = ptr;
1260 if (likely(*ptr == '\r'))
1261 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1262 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1263
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1264 http_msg_rqline_end:
1265 case HTTP_MSG_RQLINE_END:
1266 /* check for HTTP/0.9 request : no version information available.
1267 * msg->sol must point to the first of CR or LF.
1268 */
1269 if (unlikely(msg->sl.rq.v_l == 0))
1270 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1271
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1272 EXPECT_LF_HERE(ptr, http_msg_invalid);
1273 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1274 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1275
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1276 /*
1277 * Common states below
1278 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1279 http_msg_hdr_first:
1280 case HTTP_MSG_HDR_FIRST:
1281 msg->sol = ptr;
1282 if (likely(!HTTP_IS_CRLF(*ptr))) {
1283 goto http_msg_hdr_name;
1284 }
1285
1286 if (likely(*ptr == '\r'))
1287 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1288 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1289
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1290 http_msg_hdr_name:
1291 case HTTP_MSG_HDR_NAME:
1292 /* assumes msg->sol points to the first char */
1293 if (likely(HTTP_IS_TOKEN(*ptr)))
1294 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1295
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1296 if (likely(*ptr == ':')) {
1297 msg->col = ptr - buf->data;
1298 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
1299 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1300
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1301 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1302
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1303 http_msg_hdr_l1_sp:
1304 case HTTP_MSG_HDR_L1_SP:
1305 /* assumes msg->sol points to the first char and msg->col to the colon */
1306 if (likely(HTTP_IS_SPHT(*ptr)))
1307 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]1308
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1309 /* header value can be basically anything except CR/LF */
1310 msg->sov = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1311
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1312 if (likely(!HTTP_IS_CRLF(*ptr))) {
1313 goto http_msg_hdr_val;
1314 }
1315
1316 if (likely(*ptr == '\r'))
1317 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1318 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1319
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1320 http_msg_hdr_l1_lf:
1321 case HTTP_MSG_HDR_L1_LF:
1322 EXPECT_LF_HERE(ptr, http_msg_invalid);
1323 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]1324
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1325 http_msg_hdr_l1_lws:
1326 case HTTP_MSG_HDR_L1_LWS:
1327 if (likely(HTTP_IS_SPHT(*ptr))) {
1328 /* replace HT,CR,LF with spaces */
1329 for (; buf->data+msg->sov < ptr; msg->sov++)
1330 buf->data[msg->sov] = ' ';
1331 goto http_msg_hdr_l1_sp;
1332 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1333 /* we had a header consisting only in spaces ! */
1334 msg->eol = buf->data + msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1335 goto http_msg_complete_header;
1336
1337 http_msg_hdr_val:
1338 case HTTP_MSG_HDR_VAL:
1339 /* assumes msg->sol points to the first char, msg->col to the
1340 * colon, and msg->sov points to the first character of the
1341 * value.
1342 */
1343 if (likely(!HTTP_IS_CRLF(*ptr)))
1344 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1345
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1346 msg->eol = ptr;
1347 /* Note: we could also copy eol into ->eoh so that we have the
1348 * real header end in case it ends with lots of LWS, but is this
1349 * really needed ?
1350 */
1351 if (likely(*ptr == '\r'))
1352 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1353 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1354
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1355 http_msg_hdr_l2_lf:
1356 case HTTP_MSG_HDR_L2_LF:
1357 EXPECT_LF_HERE(ptr, http_msg_invalid);
1358 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]1359
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1360 http_msg_hdr_l2_lws:
1361 case HTTP_MSG_HDR_L2_LWS:
1362 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1363 /* LWS: replace HT,CR,LF with spaces */
1364 for (; msg->eol < ptr; msg->eol++)
1365 *msg->eol = ' ';
1366 goto http_msg_hdr_val;
1367 }
1368 http_msg_complete_header:
1369 /*
1370 * It was a new header, so the last one is finished.
1371 * Assumes msg->sol points to the first char, msg->col to the
1372 * colon, msg->sov points to the first character of the value
1373 * and msg->eol to the first CR or LF so we know how the line
1374 * ends. We insert last header into the index.
1375 */
1376 /*
1377 fprintf(stderr,"registering %-2d bytes : ", msg->eol - msg->sol);
1378 write(2, msg->sol, msg->eol-msg->sol);
1379 fprintf(stderr,"\n");
1380 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1381
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1382 if (unlikely(hdr_idx_add(msg->eol - msg->sol, *msg->eol == '\r',
1383 idx, idx->tail) < 0))
1384 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1385
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]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 Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1394
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1395 http_msg_last_lf:
1396 case HTTP_MSG_LAST_LF:
1397 /* Assumes msg->sol points to the first of either CR or LF */
1398 EXPECT_LF_HERE(ptr, http_msg_invalid);
1399 ptr++;
1400 buf->lr = ptr;
1401 msg->eoh = msg->sol - buf->data;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1402 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1403 return;
1404#ifdef DEBUG_FULL
1405 default:
1406 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1407 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1408#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1409 }
1410 http_msg_ood:
1411 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1412 msg->msg_state = state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1413 buf->lr = ptr;
1414 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1415
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1416 http_msg_invalid:
1417 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1418 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1419 return;
1420}
1421
1422/*
1423 * manages the client FSM and its socket. BTW, it also tries to handle the
1424 * cookie. It returns 1 if a state has changed (and a resync may be needed),
1425 * 0 else.
1426 */
1427int process_cli(struct session *t)
1428{
1429 int s = t->srv_state;
1430 int c = t->cli_state;
1431 struct buffer *req = t->req;
1432 struct buffer *rep = t->rep;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1433
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1434 DPRINTF(stderr,"process_cli: c=%s s=%s set(r,w)=%d,%d exp(r,w)=%d.%d,%d.%d\n",
1435 cli_stnames[c], srv_stnames[s],
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1436 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]1437 req->rex.tv_sec, req->rex.tv_usec,
1438 rep->wex.tv_sec, rep->wex.tv_usec);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1439
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1440 if (c == CL_STHEADERS) {
1441 /*
1442 * Now parse the partial (or complete) lines.
1443 * We will check the request syntax, and also join multi-line
1444 * headers. An index of all the lines will be elaborated while
1445 * parsing.
1446 *
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1447 * For the parsing, we use a 28 states FSM.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1448 *
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1449 * Here is the information we currently have :
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1450 * req->data + req->som = beginning of request
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1451 * req->data + req->eoh = end of processed headers / start of current one
1452 * req->data + req->eol = end of current header or line (LF or CRLF)
1453 * req->lr = first non-visited byte
1454 * req->r = end of data
1455 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1456
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1457 int cur_idx;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1458 struct http_txn *txn = &t->txn;
1459 struct http_msg *msg = &txn->req;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1460 struct proxy *cur_proxy;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1461
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1462 if (likely(req->lr < req->r))
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1463 http_msg_analyzer(req, msg, &txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1464
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1465 /* 1: we might have to print this header in debug mode */
1466 if (unlikely((global.mode & MODE_DEBUG) &&
1467 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1468 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1469 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1470
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1471 sol = req->data + msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1472 eol = sol + msg->sl.rq.l;
1473 debug_hdr("clireq", t, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1474
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1475 sol += hdr_idx_first_pos(&txn->hdr_idx);
1476 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1477
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1478 while (cur_idx) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1479 eol = sol + txn->hdr_idx.v[cur_idx].len;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1480 debug_hdr("clihdr", t, sol, eol);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1481 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
1482 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1483 }
1484 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1485
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1486
1487 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1488 * Now we quickly check if we have found a full valid request.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1489 * If not so, we check the FD and buffer states before leaving.
1490 * A full request is indicated by the fact that we have seen
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1491 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
1492 * requests are checked first.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1493 *
1494 */
1495
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1496 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1497 /*
1498 * First, let's catch bad requests.
1499 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1500 if (unlikely(msg->msg_state == HTTP_MSG_ERROR))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1501 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1502
1503 /* 1: Since we are in header mode, if there's no space
1504 * left for headers, we won't be able to free more
1505 * later, so the session will never terminate. We
1506 * must terminate it now.
1507 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1508 if (unlikely(req->l >= req->rlim - req->data)) {
1509 /* FIXME: check if URI is set and return Status
1510 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1511 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1512 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1513 }
1514
1515 /* 2: have we encountered a read error or a close ? */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1516 else if (unlikely(req->flags & (BF_READ_ERROR | BF_READ_NULL))) {
1517 /* read error, or last read : give up. */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1518 tv_eternity(&req->rex);
1519 fd_delete(t->cli_fd);
1520 t->cli_state = CL_STCLOSE;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]1521 t->fe->failed_req++;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1522 if (!(t->flags & SN_ERR_MASK))
1523 t->flags |= SN_ERR_CLICL;
1524 if (!(t->flags & SN_FINST_MASK))
1525 t->flags |= SN_FINST_R;
1526 return 1;
1527 }
1528
1529 /* 3: has the read timeout expired ? */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]1530 else if (unlikely(tv_ms_le2(&req->rex, &now))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1531 /* read timeout : give up with an error message. */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1532 txn->status = 408;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1533 client_retnclose(t, error_message(t, HTTP_ERR_408));
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]1534 t->fe->failed_req++;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1535 if (!(t->flags & SN_ERR_MASK))
1536 t->flags |= SN_ERR_CLITO;
1537 if (!(t->flags & SN_FINST_MASK))
1538 t->flags |= SN_FINST_R;
1539 return 1;
1540 }
1541
1542 /* 4: do we need to re-enable the read socket ? */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]1543 else if (unlikely(EV_FD_COND_S(t->cli_fd, DIR_RD))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1544 /* fd in DIR_RD was disabled, perhaps because of a previous buffer
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1545 * full. We cannot loop here since stream_sock_read will disable it only if
1546 * req->l == rlim-data
1547 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1548 if (t->fe->clitimeout)
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]1549 tv_ms_add(&req->rex, &now, t->fe->clitimeout);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1550 else
1551 tv_eternity(&req->rex);
1552 }
1553 return t->cli_state != CL_STHEADERS;
1554 }
1555
1556
1557 /****************************************************************
1558 * More interesting part now : we know that we have a complete *
1559 * request which at least looks like HTTP. We have an indicator *
1560 * of each header's length, so we can parse them quickly. *
1561 ****************************************************************/
1562
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1563 /* ensure we keep this pointer to the beginning of the message */
1564 msg->sol = req->data + msg->som;
1565
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1566 /*
1567 * 1: identify the method
1568 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1569 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1570
1571 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1572 * 2: check if the URI matches the monitor_uri.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1573 * We have to do this for every request which gets in, because
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1574 * the monitor-uri is defined by the frontend.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1575 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1576 if (unlikely((t->fe->monitor_uri_len != 0) &&
1577 (t->fe->monitor_uri_len == msg->sl.rq.u_l) &&
1578 !memcmp(&req->data[msg->sl.rq.u],
1579 t->fe->monitor_uri,
1580 t->fe->monitor_uri_len))) {
1581 /*
1582 * We have found the monitor URI
1583 */
1584 t->flags |= SN_MONITOR;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1585 txn->status = 200;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1586 client_retnclose(t, &http_200_chunk);
1587 goto return_prx_cond;
1588 }
1589
1590 /*
1591 * 3: Maybe we have to copy the original REQURI for the logs ?
1592 * Note: we cannot log anymore if the request has been
1593 * classified as invalid.
1594 */
1595 if (unlikely(t->logs.logwait & LW_REQ)) {
1596 /* we have a complete HTTP request that we must log */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1597 if ((txn->uri = pool_alloc(requri)) != NULL) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1598 int urilen = msg->sl.rq.l;
1599
1600 if (urilen >= REQURI_LEN)
1601 urilen = REQURI_LEN - 1;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1602 memcpy(txn->uri, &req->data[msg->som], urilen);
1603 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1604
1605 if (!(t->logs.logwait &= ~LW_REQ))
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1606 http_sess_log(t);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1607 } else {
1608 Alert("HTTP logging : out of memory.\n");
1609 }
1610 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1611
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1612
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1613 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
1614 if (unlikely(msg->sl.rq.v_l == 0)) {
1615 int delta;
1616 char *cur_end;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1617 msg->sol = req->data + msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1618 cur_end = msg->sol + msg->sl.rq.l;
1619 delta = 0;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1620
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1621 if (msg->sl.rq.u_l == 0) {
1622 /* if no URI was set, add "/" */
1623 delta = buffer_replace2(req, cur_end, cur_end, " /", 2);
1624 cur_end += delta;
1625 msg->eoh += delta;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1626 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1627 /* add HTTP version */
1628 delta = buffer_replace2(req, cur_end, cur_end, " HTTP/1.0\r\n", 11);
1629 msg->eoh += delta;
1630 cur_end += delta;
1631 cur_end = (char *)http_parse_reqline(msg, req->data,
1632 HTTP_MSG_RQMETH,
1633 msg->sol, cur_end + 1,
1634 NULL, NULL);
1635 if (unlikely(!cur_end))
1636 goto return_bad_req;
1637
1638 /* we have a full HTTP/1.0 request now and we know that
1639 * we have either a CR or an LF at <ptr>.
1640 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1641 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1642 }
1643
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1644
1645 /* 5: we may need to capture headers */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1646 if (unlikely((t->logs.logwait & LW_REQHDR) && t->fe->req_cap))
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1647 capture_headers(req->data + msg->som, &txn->hdr_idx,
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1648 txn->req.cap, t->fe->req_cap);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1649
1650 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1651 * 6: we will have to evaluate the filters.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1652 * As opposed to version 1.2, now they will be evaluated in the
1653 * filters order and not in the header order. This means that
1654 * each filter has to be validated among all headers.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1655 *
1656 * We can now check whether we want to switch to another
1657 * backend, in which case we will re-check the backend's
1658 * filters and various options. In order to support 3-level
1659 * switching, here's how we should proceed :
1660 *
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1661 * a) run be.
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1662 * if (switch) then switch ->be to the new backend.
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1663 * b) run be if (be != fe).
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1664 * There cannot be any switch from there, so ->be cannot be
1665 * changed anymore.
1666 *
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1667 * => filters always apply to ->be, then ->be may change.
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1668 *
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1669 * The response path will be able to apply either ->be, or
1670 * ->be then ->fe filters in order to match the reverse of
1671 * the forward sequence.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1672 */
1673
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1674 do {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1675 struct proxy *rule_set = t->be;
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1676 cur_proxy = t->be;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1677
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1678 /* try headers filters */
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1679 if (rule_set->req_exp != NULL) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1680 if (apply_filters_to_request(t, req, rule_set->req_exp) < 0)
1681 goto return_bad_req;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1682 }
1683
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1684 if (!(t->flags & SN_BE_ASSIGNED) && (t->be != cur_proxy)) {
1685 /* to ensure correct connection accounting on
1686 * the backend, we count the connection for the
1687 * one managing the queue.
1688 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1689 t->be->beconn++;
1690 if (t->be->beconn > t->be->beconn_max)
1691 t->be->beconn_max = t->be->beconn;
1692 t->be->cum_beconn++;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1693 t->flags |= SN_BE_ASSIGNED;
1694 }
1695
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1696 /* has the request been denied ? */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]1697 if (txn->flags & TX_CLDENY) {
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1698 /* no need to go further */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1699 txn->status = 403;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1700 /* let's log the request time */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]1701 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1702 client_retnclose(t, error_message(t, HTTP_ERR_403));
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1703 goto return_prx_cond;
1704 }
1705
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1706 /* We might have to check for "Connection:" */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1707 if (((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1708 !(t->flags & SN_CONN_CLOSED)) {
1709 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1710 int cur_idx, old_idx, delta, val;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1711 struct hdr_idx_elem *cur_hdr;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1712
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1713 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1714 old_idx = 0;
1715
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1716 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
1717 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1718 cur_ptr = cur_next;
1719 cur_end = cur_ptr + cur_hdr->len;
1720 cur_next = cur_end + cur_hdr->cr + 1;
1721
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1722 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
1723 if (val) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1724 /* 3 possibilities :
1725 * - we have already set Connection: close,
1726 * so we remove this line.
1727 * - we have not yet set Connection: close,
1728 * but this line indicates close. We leave
1729 * it untouched and set the flag.
1730 * - we have not yet set Connection: close,
1731 * and this line indicates non-close. We
1732 * replace it.
1733 */
1734 if (t->flags & SN_CONN_CLOSED) {
1735 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1736 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1737 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1738 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
1739 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1740 cur_hdr->len = 0;
1741 } else {
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1742 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
1743 delta = buffer_replace2(req, cur_ptr + val, cur_end,
1744 "close", 5);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1745 cur_next += delta;
1746 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1747 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1748 }
1749 t->flags |= SN_CONN_CLOSED;
1750 }
1751 }
1752 old_idx = cur_idx;
1753 }
Willy Tarreauf2f0ee82007-03-30 12:02:43 +0200[diff] [blame]1754 }
1755 /* add request headers from the rule sets in the same order */
1756 for (cur_idx = 0; cur_idx < rule_set->nb_reqadd; cur_idx++) {
1757 if (unlikely(http_header_add_tail(req,
1758 &txn->req,
1759 &txn->hdr_idx,
1760 rule_set->req_add[cur_idx])) < 0)
1761 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1762 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]1763
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1764 /* check if stats URI was requested, and if an auth is needed */
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]1765 if (rule_set->uri_auth != NULL &&
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1766 (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)) {
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]1767 /* we have to check the URI and auth for this request */
1768 if (stats_check_uri_auth(t, rule_set))
1769 return 1;
1770 }
1771
Willy Tarreau5fdfb912007-01-01 23:11:07 +0100[diff] [blame]1772 if (!(t->flags & SN_BE_ASSIGNED) && cur_proxy->defbe.be) {
1773 /* No backend was set, but there was a default
1774 * backend set in the frontend, so we use it and
1775 * loop again.
1776 */
1777 t->be = cur_proxy->defbe.be;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1778 t->be->beconn++;
1779 if (t->be->beconn > t->be->beconn_max)
1780 t->be->beconn_max = t->be->beconn;
1781 t->be->cum_beconn++;
Willy Tarreau5fdfb912007-01-01 23:11:07 +0100[diff] [blame]1782 t->flags |= SN_BE_ASSIGNED;
1783 }
1784 } while (t->be != cur_proxy); /* we loop only if t->be has changed */
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1785
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1786
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1787 if (!(t->flags & SN_BE_ASSIGNED)) {
1788 /* To ensure correct connection accounting on
1789 * the backend, we count the connection for the
1790 * one managing the queue.
1791 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1792 t->be->beconn++;
1793 if (t->be->beconn > t->be->beconn_max)
1794 t->be->beconn_max = t->be->beconn;
1795 t->be->cum_beconn++;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1796 t->flags |= SN_BE_ASSIGNED;
1797 }
1798
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1799 /*
1800 * Right now, we know that we have processed the entire headers
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1801 * and that unwanted requests have been filtered out. We can do
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1802 * whatever we want with the remaining request. Also, now we
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1803 * may have separate values for ->fe, ->be.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1804 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1805
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1806
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1807
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1808
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1809 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1810 * 7: the appsession cookie was looked up very early in 1.2,
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1811 * so let's do the same now.
1812 */
1813
1814 /* It needs to look into the URI */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1815 if (t->be->appsession_name) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1816 get_srv_from_appsession(t, &req->data[msg->som], msg->sl.rq.l);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1817 }
1818
1819
1820 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1821 * 8: Now we can work with the cookies.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1822 * Note that doing so might move headers in the request, but
1823 * the fields will stay coherent and the URI will not move.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1824 * This should only be performed in the backend.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1825 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]1826 if (!(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1827 manage_client_side_cookies(t, req);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1828
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1829
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1830 /*
Willy Tarreaubb046ac2007-03-03 19:17:03 +0100[diff] [blame]1831 * 9: add X-Forwarded-For if either the frontend or the backend
1832 * asks for it.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1833 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1834 if ((t->fe->options | t->be->options) & PR_O_FWDFOR) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1835 if (t->cli_addr.ss_family == AF_INET) {
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]1836 /* Add an X-Forwarded-For header unless the source IP is
1837 * in the 'except' network range.
1838 */
1839 if ((!t->fe->except_mask.s_addr ||
1840 (((struct sockaddr_in *)&t->cli_addr)->sin_addr.s_addr & t->fe->except_mask.s_addr)
1841 != t->fe->except_net.s_addr) &&
1842 (!t->be->except_mask.s_addr ||
1843 (((struct sockaddr_in *)&t->cli_addr)->sin_addr.s_addr & t->be->except_mask.s_addr)
1844 != t->be->except_net.s_addr)) {
1845 int len;
1846 unsigned char *pn;
1847 pn = (unsigned char *)&((struct sockaddr_in *)&t->cli_addr)->sin_addr;
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1848
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]1849 len = sprintf(trash, "X-Forwarded-For: %d.%d.%d.%d",
1850 pn[0], pn[1], pn[2], pn[3]);
1851
1852 if (unlikely(http_header_add_tail2(req, &txn->req,
1853 &txn->hdr_idx, trash, len)) < 0)
1854 goto return_bad_req;
1855 }
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1856 }
1857 else if (t->cli_addr.ss_family == AF_INET6) {
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]1858 /* FIXME: for the sake of completeness, we should also support
1859 * 'except' here, although it is mostly useless in this case.
1860 */
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1861 int len;
1862 char pn[INET6_ADDRSTRLEN];
1863 inet_ntop(AF_INET6,
1864 (const void *)&((struct sockaddr_in6 *)(&t->cli_addr))->sin6_addr,
1865 pn, sizeof(pn));
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]1866 len = sprintf(trash, "X-Forwarded-For: %s", pn);
1867 if (unlikely(http_header_add_tail2(req, &txn->req,
1868 &txn->hdr_idx, trash, len)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1869 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1870 }
1871 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1872
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1873 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1874 * 10: add "Connection: close" if needed and not yet set.
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]1875 * 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]1876 */
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]1877 if (!(t->flags & SN_CONN_CLOSED) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1878 ((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE)) {
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]1879 if ((unlikely(msg->sl.rq.v_l != 8) ||
1880 unlikely(req->data[msg->som + msg->sl.rq.v + 7] != '0')) &&
1881 unlikely(http_header_add_tail2(req, &txn->req, &txn->hdr_idx,
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]1882 "Connection: close", 17)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1883 goto return_bad_req;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1884 t->flags |= SN_CONN_CLOSED;
Willy Tarreaue15d9132006-12-14 22:26:42 +0100[diff] [blame]1885 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1886
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1887 /*************************************************************
1888 * OK, that's finished for the headers. We have done what we *
1889 * could. Let's switch to the DATA state. *
1890 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1891
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1892 t->cli_state = CL_STDATA;
1893 req->rlim = req->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1894
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]1895 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1896
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1897 if (!t->fe->clitimeout ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1898 (t->srv_state < SV_STDATA && t->be->srvtimeout)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1899 /* If the client has no timeout, or if the server is not ready yet,
1900 * and we know for sure that it can expire, then it's cleaner to
1901 * disable the timeout on the client side so that too low values
1902 * cannot make the sessions abort too early.
1903 *
1904 * FIXME-20050705: the server needs a way to re-enable this time-out
1905 * when it switches its state, otherwise a client can stay connected
1906 * indefinitely. This now seems to be OK.
1907 */
1908 tv_eternity(&req->rex);
1909 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1910
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1911 /* When a connection is tarpitted, we use the queue timeout for the
1912 * tarpit delay, which currently happens to be the server's connect
1913 * timeout. If unset, then set it to zero because we really want it
1914 * to expire at one moment.
1915 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]1916 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1917 t->req->l = 0;
1918 /* flush the request so that we can drop the connection early
1919 * if the client closes first.
1920 */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]1921 tv_ms_add(&req->cex, &now,
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1922 t->be->contimeout ? t->be->contimeout : 0);
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1923 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1924
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1925 /* OK let's go on with the BODY now */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1926 goto process_data;
1927
1928 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1929 txn->req.msg_state = HTTP_MSG_ERROR;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1930 txn->status = 400;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1931 client_retnclose(t, error_message(t, HTTP_ERR_400));
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]1932 t->fe->failed_req++;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1933 return_prx_cond:
1934 if (!(t->flags & SN_ERR_MASK))
1935 t->flags |= SN_ERR_PRXCOND;
1936 if (!(t->flags & SN_FINST_MASK))
1937 t->flags |= SN_FINST_R;
1938 return 1;
1939
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1940 }
1941 else if (c == CL_STDATA) {
1942 process_data:
1943 /* FIXME: this error handling is partly buggy because we always report
1944 * a 'DATA' phase while we don't know if the server was in IDLE, CONN
1945 * or HEADER phase. BTW, it's not logical to expire the client while
1946 * we're waiting for the server to connect.
1947 */
1948 /* read or write error */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]1949 if (rep->flags & BF_WRITE_ERROR || req->flags & BF_READ_ERROR) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]1950 tv_eternity(&req->rex);
1951 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1952 fd_delete(t->cli_fd);
1953 t->cli_state = CL_STCLOSE;
1954 if (!(t->flags & SN_ERR_MASK))
1955 t->flags |= SN_ERR_CLICL;
1956 if (!(t->flags & SN_FINST_MASK)) {
1957 if (t->pend_pos)
1958 t->flags |= SN_FINST_Q;
1959 else if (s == SV_STCONN)
1960 t->flags |= SN_FINST_C;
1961 else
1962 t->flags |= SN_FINST_D;
1963 }
1964 return 1;
1965 }
1966 /* last read, or end of server write */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]1967 else if (req->flags & BF_READ_NULL || s == SV_STSHUTW || s == SV_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1968 EV_FD_CLR(t->cli_fd, DIR_RD);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]1969 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1970 t->cli_state = CL_STSHUTR;
1971 return 1;
1972 }
1973 /* last server read and buffer empty */
1974 else if ((s == SV_STSHUTR || s == SV_STCLOSE) && (rep->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1975 EV_FD_CLR(t->cli_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]1976 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1977 shutdown(t->cli_fd, SHUT_WR);
1978 /* We must ensure that the read part is still alive when switching
1979 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1980 EV_FD_SET(t->cli_fd, DIR_RD);
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]1981 if (t->fe->clitimeout)
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]1982 tv_ms_add(&req->rex, &now, t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1983 t->cli_state = CL_STSHUTW;
1984 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
1985 return 1;
1986 }
1987 /* read timeout */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]1988 else if (tv_ms_le2(&req->rex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1989 EV_FD_CLR(t->cli_fd, DIR_RD);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]1990 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1991 t->cli_state = CL_STSHUTR;
1992 if (!(t->flags & SN_ERR_MASK))
1993 t->flags |= SN_ERR_CLITO;
1994 if (!(t->flags & SN_FINST_MASK)) {
1995 if (t->pend_pos)
1996 t->flags |= SN_FINST_Q;
1997 else if (s == SV_STCONN)
1998 t->flags |= SN_FINST_C;
1999 else
2000 t->flags |= SN_FINST_D;
2001 }
2002 return 1;
2003 }
2004 /* write timeout */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2005 else if (tv_ms_le2(&rep->wex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2006 EV_FD_CLR(t->cli_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2007 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2008 shutdown(t->cli_fd, SHUT_WR);
2009 /* We must ensure that the read part is still alive when switching
2010 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2011 EV_FD_SET(t->cli_fd, DIR_RD);
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2012 if (t->fe->clitimeout)
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2013 tv_ms_add(&req->rex, &now, t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2014
2015 t->cli_state = CL_STSHUTW;
2016 if (!(t->flags & SN_ERR_MASK))
2017 t->flags |= SN_ERR_CLITO;
2018 if (!(t->flags & SN_FINST_MASK)) {
2019 if (t->pend_pos)
2020 t->flags |= SN_FINST_Q;
2021 else if (s == SV_STCONN)
2022 t->flags |= SN_FINST_C;
2023 else
2024 t->flags |= SN_FINST_D;
2025 }
2026 return 1;
2027 }
2028
2029 if (req->l >= req->rlim - req->data) {
2030 /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2031 if (EV_FD_COND_C(t->cli_fd, DIR_RD)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2032 /* stop reading until we get some space */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2033 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2034 }
2035 } else {
2036 /* there's still some space in the buffer */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2037 if (EV_FD_COND_S(t->cli_fd, DIR_RD)) {
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2038 if (!t->fe->clitimeout ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2039 (t->srv_state < SV_STDATA && t->be->srvtimeout))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2040 /* If the client has no timeout, or if the server not ready yet, and we
2041 * know for sure that it can expire, then it's cleaner to disable the
2042 * timeout on the client side so that too low values cannot make the
2043 * sessions abort too early.
2044 */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2045 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2046 else
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2047 tv_ms_add(&req->rex, &now, t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2048 }
2049 }
2050
2051 if ((rep->l == 0) ||
2052 ((s < SV_STDATA) /* FIXME: this may be optimized && (rep->w == rep->h)*/)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2053 if (EV_FD_COND_C(t->cli_fd, DIR_WR)) {
2054 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2055 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2056 }
2057 } else {
2058 /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2059 if (EV_FD_COND_S(t->cli_fd, DIR_WR)) {
2060 /* restart writing */
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2061 if (t->fe->clitimeout) {
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2062 tv_ms_add(&rep->wex, &now, t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2063 /* FIXME: to prevent the client from expiring read timeouts during writes,
2064 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2065 req->rex = rep->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2066 }
2067 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2068 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2069 }
2070 }
2071 return 0; /* other cases change nothing */
2072 }
2073 else if (c == CL_STSHUTR) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2074 if (rep->flags & BF_WRITE_ERROR) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2075 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2076 fd_delete(t->cli_fd);
2077 t->cli_state = CL_STCLOSE;
2078 if (!(t->flags & SN_ERR_MASK))
2079 t->flags |= SN_ERR_CLICL;
2080 if (!(t->flags & SN_FINST_MASK)) {
2081 if (t->pend_pos)
2082 t->flags |= SN_FINST_Q;
2083 else if (s == SV_STCONN)
2084 t->flags |= SN_FINST_C;
2085 else
2086 t->flags |= SN_FINST_D;
2087 }
2088 return 1;
2089 }
2090 else if ((s == SV_STSHUTR || s == SV_STCLOSE) && (rep->l == 0)
2091 && !(t->flags & SN_SELF_GEN)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2092 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2093 fd_delete(t->cli_fd);
2094 t->cli_state = CL_STCLOSE;
2095 return 1;
2096 }
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2097 else if (tv_ms_le2(&rep->wex, &now)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2098 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2099 fd_delete(t->cli_fd);
2100 t->cli_state = CL_STCLOSE;
2101 if (!(t->flags & SN_ERR_MASK))
2102 t->flags |= SN_ERR_CLITO;
2103 if (!(t->flags & SN_FINST_MASK)) {
2104 if (t->pend_pos)
2105 t->flags |= SN_FINST_Q;
2106 else if (s == SV_STCONN)
2107 t->flags |= SN_FINST_C;
2108 else
2109 t->flags |= SN_FINST_D;
2110 }
2111 return 1;
2112 }
2113
2114 if (t->flags & SN_SELF_GEN) {
2115 produce_content(t);
2116 if (rep->l == 0) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2117 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2118 fd_delete(t->cli_fd);
2119 t->cli_state = CL_STCLOSE;
2120 return 1;
2121 }
2122 }
2123
2124 if ((rep->l == 0)
2125 || ((s == SV_STHEADERS) /* FIXME: this may be optimized && (rep->w == rep->h)*/)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2126 if (EV_FD_COND_C(t->cli_fd, DIR_WR)) {
2127 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2128 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2129 }
2130 } else {
2131 /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2132 if (EV_FD_COND_S(t->cli_fd, DIR_WR)) {
2133 /* restart writing */
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2134 if (t->fe->clitimeout) {
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2135 tv_ms_add(&rep->wex, &now, t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2136 /* FIXME: to prevent the client from expiring read timeouts during writes,
2137 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2138 req->rex = rep->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2139 }
2140 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2141 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2142 }
2143 }
2144 return 0;
2145 }
2146 else if (c == CL_STSHUTW) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2147 if (req->flags & BF_READ_ERROR) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2148 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2149 fd_delete(t->cli_fd);
2150 t->cli_state = CL_STCLOSE;
2151 if (!(t->flags & SN_ERR_MASK))
2152 t->flags |= SN_ERR_CLICL;
2153 if (!(t->flags & SN_FINST_MASK)) {
2154 if (t->pend_pos)
2155 t->flags |= SN_FINST_Q;
2156 else if (s == SV_STCONN)
2157 t->flags |= SN_FINST_C;
2158 else
2159 t->flags |= SN_FINST_D;
2160 }
2161 return 1;
2162 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2163 else if (req->flags & BF_READ_NULL || s == SV_STSHUTW || s == SV_STCLOSE) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2164 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2165 fd_delete(t->cli_fd);
2166 t->cli_state = CL_STCLOSE;
2167 return 1;
2168 }
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2169 else if (tv_ms_le2(&req->rex, &now)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2170 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2171 fd_delete(t->cli_fd);
2172 t->cli_state = CL_STCLOSE;
2173 if (!(t->flags & SN_ERR_MASK))
2174 t->flags |= SN_ERR_CLITO;
2175 if (!(t->flags & SN_FINST_MASK)) {
2176 if (t->pend_pos)
2177 t->flags |= SN_FINST_Q;
2178 else if (s == SV_STCONN)
2179 t->flags |= SN_FINST_C;
2180 else
2181 t->flags |= SN_FINST_D;
2182 }
2183 return 1;
2184 }
2185 else if (req->l >= req->rlim - req->data) {
2186 /* no room to read more data */
2187
2188 /* FIXME-20050705: is it possible for a client to maintain a session
2189 * after the timeout by sending more data after it receives a close ?
2190 */
2191
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2192 if (EV_FD_COND_C(t->cli_fd, DIR_RD)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2193 /* stop reading until we get some space */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2194 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2195 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2196 }
2197 } else {
2198 /* there's still some space in the buffer */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2199 if (EV_FD_COND_S(t->cli_fd, DIR_RD)) {
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2200 if (t->fe->clitimeout)
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2201 tv_ms_add(&req->rex, &now, t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2202 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2203 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2204 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2205 }
2206 }
2207 return 0;
2208 }
2209 else { /* CL_STCLOSE: nothing to do */
2210 if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
2211 int len;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2212 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]2213 write(1, trash, len);
2214 }
2215 return 0;
2216 }
2217 return 0;
2218}
2219
2220
2221/*
2222 * manages the server FSM and its socket. It returns 1 if a state has changed
2223 * (and a resync may be needed), 0 else.
2224 */
2225int process_srv(struct session *t)
2226{
2227 int s = t->srv_state;
2228 int c = t->cli_state;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2229 struct http_txn *txn = &t->txn;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2230 struct buffer *req = t->req;
2231 struct buffer *rep = t->rep;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2232 int conn_err;
2233
2234#ifdef DEBUG_FULL
2235 fprintf(stderr,"process_srv: c=%s, s=%s\n", cli_stnames[c], srv_stnames[s]);
2236#endif
2237 //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]2238 //EV_FD_ISSET(t->cli_fd, DIR_RD), EV_FD_ISSET(t->cli_fd, DIR_WR),
2239 //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]2240 //);
2241 if (s == SV_STIDLE) {
2242 if (c == CL_STHEADERS)
2243 return 0; /* stay in idle, waiting for data to reach the client side */
2244 else if (c == CL_STCLOSE || c == CL_STSHUTW ||
2245 (c == CL_STSHUTR &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2246 (t->req->l == 0 || t->be->options & PR_O_ABRT_CLOSE))) { /* give up */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2247 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2248 if (t->pend_pos)
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2249 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2250 /* note that this must not return any error because it would be able to
2251 * overwrite the client_retnclose() output.
2252 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2253 if (txn->flags & TX_CLTARPIT)
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2254 srv_close_with_err(t, SN_ERR_CLICL, SN_FINST_T, 0, NULL);
Willy Tarreau08fa2e32006-09-03 10:47:37 +0200[diff] [blame]2255 else
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2256 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]2257
2258 return 1;
2259 }
2260 else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2261 if (txn->flags & TX_CLTARPIT) {
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2262 /* This connection is being tarpitted. The CLIENT side has
2263 * already set the connect expiration date to the right
2264 * timeout. We just have to check that it has not expired.
2265 */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2266 if (!tv_ms_le2(&req->cex, &now))
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2267 return 0;
2268
2269 /* We will set the queue timer to the time spent, just for
2270 * logging purposes. We fake a 500 server error, so that the
2271 * attacker will not suspect his connection has been tarpitted.
2272 * It will not cause trouble to the logs because we can exclude
2273 * the tarpitted connections by filtering on the 'PT' status flags.
2274 */
2275 tv_eternity(&req->cex);
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2276 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2277 srv_close_with_err(t, SN_ERR_PRXCOND, SN_FINST_T,
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2278 500, error_message(t, HTTP_ERR_500));
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2279 return 1;
2280 }
2281
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2282 /* Right now, we will need to create a connection to the server.
2283 * We might already have tried, and got a connection pending, in
2284 * which case we will not do anything till it's pending. It's up
2285 * to any other session to release it and wake us up again.
2286 */
2287 if (t->pend_pos) {
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2288 if (!tv_ms_le2(&req->cex, &now))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2289 return 0;
2290 else {
2291 /* we've been waiting too long here */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2292 tv_eternity(&req->cex);
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2293 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2294 srv_close_with_err(t, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2295 503, error_message(t, HTTP_ERR_503));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2296 if (t->srv)
2297 t->srv->failed_conns++;
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2298 t->fe->failed_conns++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2299 return 1;
2300 }
2301 }
2302
2303 do {
2304 /* first, get a connection */
2305 if (srv_redispatch_connect(t))
2306 return t->srv_state != SV_STIDLE;
2307
2308 /* try to (re-)connect to the server, and fail if we expire the
2309 * number of retries.
2310 */
2311 if (srv_retryable_connect(t)) {
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2312 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2313 return t->srv_state != SV_STIDLE;
2314 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2315 } while (1);
2316 }
2317 }
2318 else if (s == SV_STCONN) { /* connection in progress */
2319 if (c == CL_STCLOSE || c == CL_STSHUTW ||
2320 (c == CL_STSHUTR &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2321 (t->req->l == 0 || t->be->options & PR_O_ABRT_CLOSE))) { /* give up */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2322 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2323 fd_delete(t->srv_fd);
2324 if (t->srv)
2325 t->srv->cur_sess--;
2326
2327 /* note that this must not return any error because it would be able to
2328 * overwrite the client_retnclose() output.
2329 */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2330 srv_close_with_err(t, SN_ERR_CLICL, SN_FINST_C, 0, NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2331 return 1;
2332 }
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2333 if (!(req->flags & BF_WRITE_STATUS) && !tv_ms_le2(&req->cex, &now)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2334 //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]2335 return 0; /* nothing changed */
2336 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2337 else if (!(req->flags & BF_WRITE_STATUS) || (req->flags & BF_WRITE_ERROR)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2338 /* timeout, asynchronous connect error or first write error */
2339 //fprintf(stderr,"2: c=%d, s=%d\n", c, s);
2340
2341 fd_delete(t->srv_fd);
2342 if (t->srv)
2343 t->srv->cur_sess--;
2344
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2345 if (!(req->flags & BF_WRITE_STATUS))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2346 conn_err = SN_ERR_SRVTO; // it was a connect timeout.
2347 else
2348 conn_err = SN_ERR_SRVCL; // it was an asynchronous connect error.
2349
2350 /* ensure that we have enough retries left */
2351 if (srv_count_retry_down(t, conn_err))
2352 return 1;
2353
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2354 if (t->srv && t->conn_retries == 0 && t->be->options & PR_O_REDISP) {
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2355 /* We're on our last chance, and the REDISP option was specified.
2356 * We will ignore cookie and force to balance or use the dispatcher.
2357 */
2358 /* let's try to offer this slot to anybody */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2359 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2360 task_wakeup(t->srv->queue_mgt);
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2361
2362 if (t->srv)
2363 t->srv->failed_conns++;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2364 t->be->failed_conns++;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2365
2366 t->flags &= ~(SN_DIRECT | SN_ASSIGNED | SN_ADDR_SET);
2367 t->srv = NULL; /* it's left to the dispatcher to choose a server */
Willy Tarreaua5e65752007-03-18 20:53:22 +0100[diff] [blame]2368 http_flush_cookie_flags(txn);
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2369
2370 /* first, get a connection */
2371 if (srv_redispatch_connect(t))
2372 return t->srv_state != SV_STIDLE;
2373 }
2374
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2375 do {
2376 /* Now we will try to either reconnect to the same server or
2377 * connect to another server. If the connection gets queued
2378 * because all servers are saturated, then we will go back to
2379 * the SV_STIDLE state.
2380 */
2381 if (srv_retryable_connect(t)) {
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2382 t->logs.t_queue = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2383 return t->srv_state != SV_STCONN;
2384 }
2385
2386 /* we need to redispatch the connection to another server */
2387 if (srv_redispatch_connect(t))
2388 return t->srv_state != SV_STCONN;
2389 } while (1);
2390 }
2391 else { /* no error or write 0 */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2392 t->logs.t_connect = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2393
2394 //fprintf(stderr,"3: c=%d, s=%d\n", c, s);
2395 if (req->l == 0) /* nothing to write */ {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2396 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2397 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2398 } else /* need the right to write */ {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2399 EV_FD_SET(t->srv_fd, DIR_WR);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2400 if (t->be->srvtimeout) {
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2401 tv_ms_add(&req->wex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2402 /* FIXME: to prevent the server from expiring read timeouts during writes,
2403 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2404 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2405 }
2406 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2407 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2408 }
2409
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2410 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]2411 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2412 if (t->be->srvtimeout)
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2413 tv_ms_add(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2414 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2415 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2416
2417 t->srv_state = SV_STDATA;
2418 if (t->srv)
2419 t->srv->cum_sess++;
2420 rep->rlim = rep->data + BUFSIZE; /* no rewrite needed */
2421
2422 /* if the user wants to log as soon as possible, without counting
2423 bytes from the server, then this is the right moment. */
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2424 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2425 t->logs.t_close = t->logs.t_connect; /* to get a valid end date */
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]2426 tcp_sess_log(t);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2427 }
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]2428#ifdef CONFIG_HAP_TCPSPLICE
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2429 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]2430 /* TCP splicing supported by both FE and BE */
2431 tcp_splice_splicefd(t->cli_fd, t->srv_fd, 0);
2432 }
2433#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2434 }
2435 else {
2436 t->srv_state = SV_STHEADERS;
2437 if (t->srv)
2438 t->srv->cum_sess++;
2439 rep->rlim = rep->data + BUFSIZE - MAXREWRITE; /* rewrite needed */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2440 t->txn.rsp.msg_state = HTTP_MSG_RPBEFORE;
2441 /* reset hdr_idx which was already initialized by the request.
2442 * right now, the http parser does it.
2443 * hdr_idx_init(&t->txn.hdr_idx);
2444 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2445 }
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2446 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2447 return 1;
2448 }
2449 }
2450 else if (s == SV_STHEADERS) { /* receiving server headers */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2451 /*
2452 * Now parse the partial (or complete) lines.
2453 * We will check the response syntax, and also join multi-line
2454 * headers. An index of all the lines will be elaborated while
2455 * parsing.
2456 *
2457 * For the parsing, we use a 28 states FSM.
2458 *
2459 * Here is the information we currently have :
2460 * rep->data + req->som = beginning of response
2461 * rep->data + req->eoh = end of processed headers / start of current one
2462 * rep->data + req->eol = end of current header or line (LF or CRLF)
2463 * rep->lr = first non-visited byte
2464 * rep->r = end of data
2465 */
2466
2467 int cur_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2468 struct http_msg *msg = &txn->rsp;
2469 struct proxy *cur_proxy;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2470
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2471 if (likely(rep->lr < rep->r))
2472 http_msg_analyzer(rep, msg, &txn->hdr_idx);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2473
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2474 /* 1: we might have to print this header in debug mode */
2475 if (unlikely((global.mode & MODE_DEBUG) &&
2476 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
2477 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
2478 char *eol, *sol;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2479
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2480 sol = rep->data + msg->som;
2481 eol = sol + msg->sl.rq.l;
2482 debug_hdr("srvrep", t, sol, eol);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2483
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2484 sol += hdr_idx_first_pos(&txn->hdr_idx);
2485 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2486
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2487 while (cur_idx) {
2488 eol = sol + txn->hdr_idx.v[cur_idx].len;
2489 debug_hdr("srvhdr", t, sol, eol);
2490 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2491 cur_idx = txn->hdr_idx.v[cur_idx].next;
2492 }
2493 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2494
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2495
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2496 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]2497 /* fd in DIR_RD was disabled, perhaps because of a previous buffer
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2498 * full. We cannot loop here since stream_sock_read will disable it only if
2499 * rep->l == rlim-data
2500 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2501 if (t->be->srvtimeout)
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2502 tv_ms_add(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2503 else
2504 tv_eternity(&rep->rex);
2505 }
2506
2507
2508 /*
2509 * Now we quickly check if we have found a full valid response.
2510 * If not so, we check the FD and buffer states before leaving.
2511 * A full response is indicated by the fact that we have seen
2512 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
2513 * responses are checked first.
2514 *
2515 * Depending on whether the client is still there or not, we
2516 * may send an error response back or not. Note that normally
2517 * we should only check for HTTP status there, and check I/O
2518 * errors somewhere else.
2519 */
2520
2521 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
2522
2523 /* Invalid response, or read error or write error */
2524 if (unlikely((msg->msg_state == HTTP_MSG_ERROR) ||
2525 (req->flags & BF_WRITE_ERROR) ||
2526 (rep->flags & BF_READ_ERROR))) {
2527 tv_eternity(&rep->rex);
2528 tv_eternity(&req->wex);
2529 fd_delete(t->srv_fd);
2530 if (t->srv) {
2531 t->srv->cur_sess--;
2532 t->srv->failed_resp++;
2533 }
2534 t->be->failed_resp++;
2535 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2536 txn->status = 502;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2537 client_return(t, error_message(t, HTTP_ERR_502));
2538 if (!(t->flags & SN_ERR_MASK))
2539 t->flags |= SN_ERR_SRVCL;
2540 if (!(t->flags & SN_FINST_MASK))
2541 t->flags |= SN_FINST_H;
2542 /* We used to have a free connection slot. Since we'll never use it,
2543 * we have to inform the server that it may be used by another session.
2544 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2545 if (t->srv && may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2546 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2547
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2548 return 1;
2549 }
2550
2551 /* end of client write or end of server read.
2552 * since we are in header mode, if there's no space left for headers, we
2553 * won't be able to free more later, so the session will never terminate.
2554 */
2555 else if (unlikely(rep->flags & BF_READ_NULL ||
2556 c == CL_STSHUTW || c == CL_STCLOSE ||
2557 rep->l >= rep->rlim - rep->data)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2558 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2559 tv_eternity(&rep->rex);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2560 t->srv_state = SV_STSHUTR;
2561 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2562 return 1;
2563 }
2564
2565 /* read timeout : return a 504 to the client.
2566 */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2567 else if (unlikely(EV_FD_ISSET(t->srv_fd, DIR_RD) &&
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2568 tv_ms_le2(&rep->rex, &now))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2569 tv_eternity(&rep->rex);
2570 tv_eternity(&req->wex);
2571 fd_delete(t->srv_fd);
2572 if (t->srv) {
2573 t->srv->cur_sess--;
2574 t->srv->failed_resp++;
2575 }
2576 t->be->failed_resp++;
2577 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2578 txn->status = 504;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2579 client_return(t, error_message(t, HTTP_ERR_504));
2580 if (!(t->flags & SN_ERR_MASK))
2581 t->flags |= SN_ERR_SRVTO;
2582 if (!(t->flags & SN_FINST_MASK))
2583 t->flags |= SN_FINST_H;
2584 /* We used to have a free connection slot. Since we'll never use it,
2585 * we have to inform the server that it may be used by another session.
2586 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2587 if (t->srv && may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2588 task_wakeup(t->srv->queue_mgt);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2589 return 1;
2590 }
2591
2592 /* last client read and buffer empty */
2593 /* FIXME!!! here, we don't want to switch to SHUTW if the
2594 * client shuts read too early, because we may still have
2595 * some work to do on the headers.
2596 * The side-effect is that if the client completely closes its
2597 * connection during SV_STHEADER, the connection to the server
2598 * is kept until a response comes back or the timeout is reached.
2599 */
2600 else if (unlikely((/*c == CL_STSHUTR ||*/ c == CL_STCLOSE) &&
2601 (req->l == 0))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2602 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2603 tv_eternity(&req->wex);
2604
2605 /* We must ensure that the read part is still
2606 * alive when switching to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2607 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2608 if (t->be->srvtimeout)
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2609 tv_ms_add(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2610
2611 shutdown(t->srv_fd, SHUT_WR);
2612 t->srv_state = SV_STSHUTW;
2613 return 1;
2614 }
2615
2616 /* write timeout */
2617 /* FIXME!!! here, we don't want to switch to SHUTW if the
2618 * client shuts read too early, because we may still have
2619 * some work to do on the headers.
2620 */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2621 else if (unlikely(EV_FD_ISSET(t->srv_fd, DIR_WR) &&
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2622 tv_ms_le2(&req->wex, &now))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2623 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2624 tv_eternity(&req->wex);
2625 shutdown(t->srv_fd, SHUT_WR);
2626 /* We must ensure that the read part is still alive
2627 * when switching to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2628 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2629 if (t->be->srvtimeout)
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2630 tv_ms_add(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2631
2632 t->srv_state = SV_STSHUTW;
2633 if (!(t->flags & SN_ERR_MASK))
2634 t->flags |= SN_ERR_SRVTO;
2635 if (!(t->flags & SN_FINST_MASK))
2636 t->flags |= SN_FINST_H;
2637 return 1;
2638 }
2639
2640 /*
2641 * And now the non-error cases.
2642 */
2643
2644 /* Data remaining in the request buffer.
2645 * This happens during the first pass here, and during
2646 * long posts.
2647 */
2648 else if (likely(req->l)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2649 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
2650 /* restart writing */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2651 if (t->be->srvtimeout) {
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2652 tv_ms_add(&req->wex, &now, t->be->srvtimeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2653 /* FIXME: to prevent the server from expiring read timeouts during writes,
2654 * we refresh it. */
2655 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2656 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2657 else
2658 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2659 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2660 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2661
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2662 /* nothing left in the request buffer */
2663 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2664 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
2665 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2666 tv_eternity(&req->wex);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2667 }
2668 }
2669
2670 return t->srv_state != SV_STHEADERS;
2671 }
2672
2673
2674 /*****************************************************************
2675 * More interesting part now : we know that we have a complete *
2676 * response which at least looks like HTTP. We have an indicator *
2677 * of each header's length, so we can parse them quickly. *
2678 ****************************************************************/
2679
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2680 /* ensure we keep this pointer to the beginning of the message */
2681 msg->sol = rep->data + msg->som;
2682
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2683 /*
2684 * 1: get the status code and check for cacheability.
2685 */
2686
2687 t->logs.logwait &= ~LW_RESP;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2688 txn->status = strl2ui(rep->data + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2689
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2690 switch (txn->status) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2691 case 200:
2692 case 203:
2693 case 206:
2694 case 300:
2695 case 301:
2696 case 410:
2697 /* RFC2616 @13.4:
2698 * "A response received with a status code of
2699 * 200, 203, 206, 300, 301 or 410 MAY be stored
2700 * by a cache (...) unless a cache-control
2701 * directive prohibits caching."
2702 *
2703 * RFC2616 @9.5: POST method :
2704 * "Responses to this method are not cacheable,
2705 * unless the response includes appropriate
2706 * Cache-Control or Expires header fields."
2707 */
2708 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2709 unlikely(t->be->options & PR_O_CHK_CACHE))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2710 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2711 break;
2712 default:
2713 break;
2714 }
2715
2716 /*
2717 * 2: we may need to capture headers
2718 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2719 if (unlikely((t->logs.logwait & LW_RSPHDR) && t->fe->rsp_cap))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2720 capture_headers(rep->data + msg->som, &txn->hdr_idx,
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2721 txn->rsp.cap, t->fe->rsp_cap);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2722
2723 /*
2724 * 3: we will have to evaluate the filters.
2725 * As opposed to version 1.2, now they will be evaluated in the
2726 * filters order and not in the header order. This means that
2727 * each filter has to be validated among all headers.
2728 *
2729 * Filters are tried with ->be first, then with ->fe if it is
2730 * different from ->be.
2731 */
2732
2733 t->flags &= ~SN_CONN_CLOSED; /* prepare for inspection */
2734
2735 cur_proxy = t->be;
2736 while (1) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2737 struct proxy *rule_set = cur_proxy;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2738
2739 /* try headers filters */
2740 if (rule_set->rsp_exp != NULL) {
2741 if (apply_filters_to_response(t, rep, rule_set->rsp_exp) < 0) {
2742 return_bad_resp:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2743 if (t->srv) {
2744 t->srv->cur_sess--;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2745 t->srv->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2746 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2747 cur_proxy->failed_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2748 return_srv_prx_502:
2749 tv_eternity(&rep->rex);
2750 tv_eternity(&req->wex);
2751 fd_delete(t->srv_fd);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2752 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2753 txn->status = 502;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2754 client_return(t, error_message(t, HTTP_ERR_502));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2755 if (!(t->flags & SN_ERR_MASK))
2756 t->flags |= SN_ERR_PRXCOND;
2757 if (!(t->flags & SN_FINST_MASK))
2758 t->flags |= SN_FINST_H;
2759 /* We used to have a free connection slot. Since we'll never use it,
2760 * we have to inform the server that it may be used by another session.
2761 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2762 if (t->srv && may_dequeue_tasks(t->srv, cur_proxy))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2763 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2764 return 1;
2765 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2766 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2767
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2768 /* has the response been denied ? */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2769 if (txn->flags & TX_SVDENY) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2770 if (t->srv) {
2771 t->srv->cur_sess--;
2772 t->srv->failed_secu++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2773 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2774 cur_proxy->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2775 goto return_srv_prx_502;
2776 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2777
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2778 /* We might have to check for "Connection:" */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2779 if (((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2780 !(t->flags & SN_CONN_CLOSED)) {
2781 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2782 int cur_idx, old_idx, delta, val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2783 struct hdr_idx_elem *cur_hdr;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2784
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2785 cur_next = rep->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
2786 old_idx = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2787
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2788 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
2789 cur_hdr = &txn->hdr_idx.v[cur_idx];
2790 cur_ptr = cur_next;
2791 cur_end = cur_ptr + cur_hdr->len;
2792 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2793
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2794 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
2795 if (val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2796 /* 3 possibilities :
2797 * - we have already set Connection: close,
2798 * so we remove this line.
2799 * - we have not yet set Connection: close,
2800 * but this line indicates close. We leave
2801 * it untouched and set the flag.
2802 * - we have not yet set Connection: close,
2803 * and this line indicates non-close. We
2804 * replace it.
2805 */
2806 if (t->flags & SN_CONN_CLOSED) {
2807 delta = buffer_replace2(rep, cur_ptr, cur_next, NULL, 0);
2808 txn->rsp.eoh += delta;
2809 cur_next += delta;
2810 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
2811 txn->hdr_idx.used--;
2812 cur_hdr->len = 0;
2813 } else {
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2814 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
2815 delta = buffer_replace2(rep, cur_ptr + val, cur_end,
2816 "close", 5);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2817 cur_next += delta;
2818 cur_hdr->len += delta;
2819 txn->rsp.eoh += delta;
2820 }
2821 t->flags |= SN_CONN_CLOSED;
2822 }
2823 }
2824 old_idx = cur_idx;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2825 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2826 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2827
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2828 /* add response headers from the rule sets in the same order */
2829 for (cur_idx = 0; cur_idx < rule_set->nb_rspadd; cur_idx++) {
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2830 if (unlikely(http_header_add_tail(rep, &txn->rsp, &txn->hdr_idx,
2831 rule_set->rsp_add[cur_idx])) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2832 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2833 }
2834
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2835 /* check whether we're already working on the frontend */
2836 if (cur_proxy == t->fe)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2837 break;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2838 cur_proxy = t->fe;
2839 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2840
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2841 /*
2842 * 4: check for server cookie.
2843 */
2844 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2845
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2846 /*
2847 * 5: add server cookie in the response if needed
2848 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2849 if ((t->srv) && !(t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_INS) &&
2850 (!(t->be->options & PR_O_COOK_POST) || (txn->meth == HTTP_METH_POST))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2851 int len;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2852
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2853 /* the server is known, it's not the one the client requested, we have to
2854 * insert a set-cookie here, except if we want to insert only on POST
2855 * requests and this one isn't. Note that servers which don't have cookies
2856 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2857 */
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2858 len = sprintf(trash, "Set-Cookie: %s=%s; path=/",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2859 t->be->cookie_name,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2860 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]2861
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2862 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
2863 trash, len)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2864 goto return_bad_resp;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2865 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2866
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2867 /* Here, we will tell an eventual cache on the client side that we don't
2868 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
2869 * Some caches understand the correct form: 'no-cache="set-cookie"', but
2870 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
2871 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2872 if (t->be->options & PR_O_COOK_NOC) {
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2873 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
2874 "Cache-control: private", 22)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2875 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2876 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2877 }
2878
2879
2880 /*
2881 * 6: check for cache-control or pragma headers.
2882 */
2883 check_response_for_cacheability(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2884
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2885
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2886 /*
2887 * 7: check if result will be cacheable with a cookie.
2888 * We'll block the response if security checks have caught
2889 * nasty things such as a cacheable cookie.
2890 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2891 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) ==
2892 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2893 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2894
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2895 /* we're in presence of a cacheable response containing
2896 * a set-cookie header. We'll block it as requested by
2897 * the 'checkcache' option, and send an alert.
2898 */
2899 if (t->srv) {
2900 t->srv->cur_sess--;
2901 t->srv->failed_secu++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2902 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2903 t->be->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2904
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2905 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2906 t->be->id, t->srv?t->srv->id:"<dispatch>");
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2907 send_log(t->be, LOG_ALERT,
2908 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2909 t->be->id, t->srv?t->srv->id:"<dispatch>");
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2910 goto return_srv_prx_502;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2911 }
2912
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2913 /*
2914 * 8: add "Connection: close" if needed and not yet set.
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2915 * 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]2916 */
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2917 if (!(t->flags & SN_CONN_CLOSED) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2918 ((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE)) {
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2919 if ((unlikely(msg->sl.st.v_l != 8) ||
2920 unlikely(req->data[msg->som + 7] != '0')) &&
2921 unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2922 "Connection: close", 17)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2923 goto return_bad_resp;
2924 t->flags |= SN_CONN_CLOSED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2925 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[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 /*************************************************************
2929 * OK, that's finished for the headers. We have done what we *
2930 * could. Let's switch to the DATA state. *
2931 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2932
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2933 t->srv_state = SV_STDATA;
2934 rep->rlim = rep->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2935 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2936
2937 /* client connection already closed or option 'forceclose' required :
2938 * we close the server's outgoing connection right now.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2939 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2940 if ((req->l == 0) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2941 (c == CL_STSHUTR || c == CL_STCLOSE || t->be->options & PR_O_FORCE_CLO)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2942 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2943 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2944
2945 /* We must ensure that the read part is still alive when switching
2946 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2947 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2948 if (t->be->srvtimeout)
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]2949 tv_ms_add(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2950
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2951 shutdown(t->srv_fd, SHUT_WR);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2952 t->srv_state = SV_STSHUTW;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2953 }
2954
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2955#ifdef CONFIG_HAP_TCPSPLICE
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2956 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2957 /* TCP splicing supported by both FE and BE */
2958 tcp_splice_splicefd(t->cli_fd, t->srv_fd, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2959 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2960#endif
2961 /* if the user wants to log as soon as possible, without counting
2962 bytes from the server, then this is the right moment. */
2963 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
2964 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
Willy Tarreaub4987172007-03-18 16:28:03 +0100[diff] [blame]2965 t->logs.bytes_in = txn->rsp.eoh;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]2966 if (t->fe->to_log & LW_REQ)
2967 http_sess_log(t);
2968 else
2969 tcp_sess_log(t);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2970 }
2971
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2972 /* Note: we must not try to cheat by jumping directly to DATA,
2973 * otherwise we would not let the client side wake up.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2974 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2975
2976 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2977 }
2978 else if (s == SV_STDATA) {
2979 /* read or write error */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2980 if (req->flags & BF_WRITE_ERROR || rep->flags & BF_READ_ERROR) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2981 tv_eternity(&rep->rex);
2982 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2983 fd_delete(t->srv_fd);
2984 if (t->srv) {
2985 t->srv->cur_sess--;
2986 t->srv->failed_resp++;
2987 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2988 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2989 t->srv_state = SV_STCLOSE;
2990 if (!(t->flags & SN_ERR_MASK))
2991 t->flags |= SN_ERR_SRVCL;
2992 if (!(t->flags & SN_FINST_MASK))
2993 t->flags |= SN_FINST_D;
2994 /* We used to have a free connection slot. Since we'll never use it,
2995 * we have to inform the server that it may be used by another session.
2996 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2997 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2998 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2999
3000 return 1;
3001 }
3002 /* last read, or end of client write */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3003 else if (rep->flags & BF_READ_NULL || c == CL_STSHUTW || c == CL_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3004 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3005 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3006 t->srv_state = SV_STSHUTR;
3007 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
3008 return 1;
3009 }
3010 /* end of client read and no more data to send */
3011 else if ((c == CL_STSHUTR || c == CL_STCLOSE) && (req->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3012 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3013 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3014 shutdown(t->srv_fd, SHUT_WR);
3015 /* We must ensure that the read part is still alive when switching
3016 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3017 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3018 if (t->be->srvtimeout)
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]3019 tv_ms_add(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3020
3021 t->srv_state = SV_STSHUTW;
3022 return 1;
3023 }
3024 /* read timeout */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]3025 else if (tv_ms_le2(&rep->rex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3026 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3027 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3028 t->srv_state = SV_STSHUTR;
3029 if (!(t->flags & SN_ERR_MASK))
3030 t->flags |= SN_ERR_SRVTO;
3031 if (!(t->flags & SN_FINST_MASK))
3032 t->flags |= SN_FINST_D;
3033 return 1;
3034 }
3035 /* write timeout */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]3036 else if (tv_ms_le2(&req->wex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3037 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3038 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3039 shutdown(t->srv_fd, SHUT_WR);
3040 /* We must ensure that the read part is still alive when switching
3041 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3042 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3043 if (t->be->srvtimeout)
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]3044 tv_ms_add(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3045 t->srv_state = SV_STSHUTW;
3046 if (!(t->flags & SN_ERR_MASK))
3047 t->flags |= SN_ERR_SRVTO;
3048 if (!(t->flags & SN_FINST_MASK))
3049 t->flags |= SN_FINST_D;
3050 return 1;
3051 }
3052
3053 /* recompute request time-outs */
3054 if (req->l == 0) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3055 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
3056 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3057 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3058 }
3059 }
3060 else { /* buffer not empty, there are still data to be transferred */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3061 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
3062 /* restart writing */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3063 if (t->be->srvtimeout) {
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]3064 tv_ms_add(&req->wex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3065 /* FIXME: to prevent the server from expiring read timeouts during writes,
3066 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3067 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3068 }
3069 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3070 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3071 }
3072 }
3073
3074 /* recompute response time-outs */
3075 if (rep->l == BUFSIZE) { /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3076 if (EV_FD_COND_C(t->srv_fd, DIR_RD)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3077 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3078 }
3079 }
3080 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3081 if (EV_FD_COND_S(t->srv_fd, DIR_RD)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3082 if (t->be->srvtimeout)
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]3083 tv_ms_add(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3084 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3085 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3086 }
3087 }
3088
3089 return 0; /* other cases change nothing */
3090 }
3091 else if (s == SV_STSHUTR) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3092 if (req->flags & BF_WRITE_ERROR) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3093 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3094 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3095 fd_delete(t->srv_fd);
3096 if (t->srv) {
3097 t->srv->cur_sess--;
3098 t->srv->failed_resp++;
3099 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3100 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3101 //close(t->srv_fd);
3102 t->srv_state = SV_STCLOSE;
3103 if (!(t->flags & SN_ERR_MASK))
3104 t->flags |= SN_ERR_SRVCL;
3105 if (!(t->flags & SN_FINST_MASK))
3106 t->flags |= SN_FINST_D;
3107 /* We used to have a free connection slot. Since we'll never use it,
3108 * we have to inform the server that it may be used by another session.
3109 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3110 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3111 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3112
3113 return 1;
3114 }
3115 else if ((c == CL_STSHUTR || c == CL_STCLOSE) && (req->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3116 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3117 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3118 fd_delete(t->srv_fd);
3119 if (t->srv)
3120 t->srv->cur_sess--;
3121 //close(t->srv_fd);
3122 t->srv_state = SV_STCLOSE;
3123 /* We used to have a free connection slot. Since we'll never use it,
3124 * we have to inform the server that it may be used by another session.
3125 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3126 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3127 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3128
3129 return 1;
3130 }
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]3131 else if (tv_ms_le2(&req->wex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3132 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3133 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3134 fd_delete(t->srv_fd);
3135 if (t->srv)
3136 t->srv->cur_sess--;
3137 //close(t->srv_fd);
3138 t->srv_state = SV_STCLOSE;
3139 if (!(t->flags & SN_ERR_MASK))
3140 t->flags |= SN_ERR_SRVTO;
3141 if (!(t->flags & SN_FINST_MASK))
3142 t->flags |= SN_FINST_D;
3143 /* We used to have a free connection slot. Since we'll never use it,
3144 * we have to inform the server that it may be used by another session.
3145 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3146 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3147 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3148
3149 return 1;
3150 }
3151 else if (req->l == 0) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3152 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
3153 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3154 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3155 }
3156 }
3157 else { /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3158 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
3159 /* restart writing */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3160 if (t->be->srvtimeout) {
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]3161 tv_ms_add(&req->wex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3162 /* FIXME: to prevent the server from expiring read timeouts during writes,
3163 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3164 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3165 }
3166 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3167 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3168 }
3169 }
3170 return 0;
3171 }
3172 else if (s == SV_STSHUTW) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3173 if (rep->flags & BF_READ_ERROR) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3174 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3175 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3176 fd_delete(t->srv_fd);
3177 if (t->srv) {
3178 t->srv->cur_sess--;
3179 t->srv->failed_resp++;
3180 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3181 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3182 //close(t->srv_fd);
3183 t->srv_state = SV_STCLOSE;
3184 if (!(t->flags & SN_ERR_MASK))
3185 t->flags |= SN_ERR_SRVCL;
3186 if (!(t->flags & SN_FINST_MASK))
3187 t->flags |= SN_FINST_D;
3188 /* We used to have a free connection slot. Since we'll never use it,
3189 * we have to inform the server that it may be used by another session.
3190 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3191 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3192 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3193
3194 return 1;
3195 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3196 else if (rep->flags & BF_READ_NULL || c == CL_STSHUTW || c == CL_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3197 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3198 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3199 fd_delete(t->srv_fd);
3200 if (t->srv)
3201 t->srv->cur_sess--;
3202 //close(t->srv_fd);
3203 t->srv_state = SV_STCLOSE;
3204 /* We used to have a free connection slot. Since we'll never use it,
3205 * we have to inform the server that it may be used by another session.
3206 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3207 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3208 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3209
3210 return 1;
3211 }
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]3212 else if (tv_ms_le2(&rep->rex, &now)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3213 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3214 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3215 fd_delete(t->srv_fd);
3216 if (t->srv)
3217 t->srv->cur_sess--;
3218 //close(t->srv_fd);
3219 t->srv_state = SV_STCLOSE;
3220 if (!(t->flags & SN_ERR_MASK))
3221 t->flags |= SN_ERR_SRVTO;
3222 if (!(t->flags & SN_FINST_MASK))
3223 t->flags |= SN_FINST_D;
3224 /* We used to have a free connection slot. Since we'll never use it,
3225 * we have to inform the server that it may be used by another session.
3226 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3227 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3228 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3229
3230 return 1;
3231 }
3232 else if (rep->l == BUFSIZE) { /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3233 if (EV_FD_COND_C(t->srv_fd, DIR_RD)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3234 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3235 }
3236 }
3237 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3238 if (EV_FD_COND_S(t->srv_fd, DIR_RD)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3239 if (t->be->srvtimeout)
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]3240 tv_ms_add(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3241 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3242 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3243 }
3244 }
3245 return 0;
3246 }
3247 else { /* SV_STCLOSE : nothing to do */
3248 if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
3249 int len;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3250 len = sprintf(trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3251 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]3252 write(1, trash, len);
3253 }
3254 return 0;
3255 }
3256 return 0;
3257}
3258
3259
3260/*
3261 * Produces data for the session <s> depending on its source. Expects to be
3262 * called with s->cli_state == CL_STSHUTR. Right now, only statistics can be
3263 * produced. It stops by itself by unsetting the SN_SELF_GEN flag from the
3264 * session, which it uses to keep on being called when there is free space in
3265 * the buffer, of simply by letting an empty buffer upon return. It returns 1
3266 * if it changes the session state from CL_STSHUTR, otherwise 0.
3267 */
3268int produce_content(struct session *s)
3269{
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3270 if (s->data_source == DATA_SRC_NONE) {
3271 s->flags &= ~SN_SELF_GEN;
3272 return 1;
3273 }
3274 else if (s->data_source == DATA_SRC_STATS) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3275 /* dump server statistics */
3276 return produce_content_stats(s);
3277 }
3278 else {
3279 /* unknown data source */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3280 s->txn.status = 500;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3281 client_retnclose(s, error_message(s, HTTP_ERR_500));
3282 if (!(s->flags & SN_ERR_MASK))
3283 s->flags |= SN_ERR_PRXCOND;
3284 if (!(s->flags & SN_FINST_MASK))
3285 s->flags |= SN_FINST_R;
3286 s->flags &= ~SN_SELF_GEN;
3287 return 1;
3288 }
3289}
3290
3291
3292/*
3293 * Produces statistics data for the session <s>. Expects to be called with
3294 * s->cli_state == CL_STSHUTR. It stops by itself by unsetting the SN_SELF_GEN
3295 * flag from the session, which it uses to keep on being called when there is
3296 * free space in the buffer, of simply by letting an empty buffer upon return.
3297 * It returns 1 if it changes the session state from CL_STSHUTR, otherwise 0.
3298 */
3299int produce_content_stats(struct session *s)
3300{
3301 struct buffer *rep = s->rep;
3302 struct proxy *px;
3303 struct chunk msg;
3304 unsigned int up;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3305
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3306 msg.len = 0;
3307 msg.str = trash;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3308
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3309 switch (s->data_state) {
3310 case DATA_ST_INIT:
3311 /* the function had not been called yet */
3312 s->flags |= SN_SELF_GEN; // more data will follow
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3313
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3314 chunk_printf(&msg, sizeof(trash),
3315 "HTTP/1.0 200 OK\r\n"
3316 "Cache-Control: no-cache\r\n"
3317 "Connection: close\r\n"
3318 "Content-Type: text/html\r\n"
3319 "\r\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3320
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3321 s->txn.status = 200;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3322 client_retnclose(s, &msg); // send the start of the response.
3323 msg.len = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3324
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3325 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
3326 s->flags |= SN_ERR_PRXCOND; // to mark that it comes from the proxy
3327 if (!(s->flags & SN_FINST_MASK))
3328 s->flags |= SN_FINST_R;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3329
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]3330 if (s->txn.meth == HTTP_METH_HEAD) {
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]3331 /* that's all we return in case of HEAD request */
3332 s->data_state = DATA_ST_FIN;
3333 s->flags &= ~SN_SELF_GEN;
3334 return 1;
3335 }
3336
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3337 s->data_state = DATA_ST_HEAD; /* let's start producing data */
3338 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3339
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3340 case DATA_ST_HEAD:
3341 /* WARNING! This must fit in the first buffer !!! */
3342 chunk_printf(&msg, sizeof(trash),
3343 "<html><head><title>Statistics Report for " PRODUCT_NAME "</title>\n"
3344 "<meta http-equiv=\"content-type\" content=\"text/html; charset=iso-8859-1\">\n"
3345 "<style type=\"text/css\"><!--\n"
3346 "body {"
3347 " font-family: helvetica, arial;"
3348 " font-size: 12px;"
3349 " font-weight: normal;"
3350 " color: black;"
3351 " background: white;"
3352 "}\n"
3353 "th,td {"
3354 " font-size: 0.8em;"
3355 " align: center;"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3356 "}\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3357 "h1 {"
3358 " font-size: xx-large;"
3359 " margin-bottom: 0.5em;"
3360 "}\n"
3361 "h2 {"
3362 " font-family: helvetica, arial;"
3363 " font-size: x-large;"
3364 " font-weight: bold;"
3365 " font-style: italic;"
3366 " color: #6020a0;"
3367 " margin-top: 0em;"
3368 " margin-bottom: 0em;"
3369 "}\n"
3370 "h3 {"
3371 " font-family: helvetica, arial;"
3372 " font-size: 16px;"
3373 " font-weight: bold;"
3374 " color: #b00040;"
3375 " background: #e8e8d0;"
3376 " margin-top: 0em;"
3377 " margin-bottom: 0em;"
3378 "}\n"
3379 "li {"
3380 " margin-top: 0.25em;"
3381 " margin-right: 2em;"
3382 "}\n"
3383 ".hr {margin-top: 0.25em;"
3384 " border-color: black;"
3385 " border-bottom-style: solid;"
3386 "}\n"
3387 ".pxname {background: #b00040;color: #ffff40;font-weight: bold;}\n"
3388 ".titre {background: #20D0D0;color: #000000;font-weight: bold;}\n"
3389 ".total {background: #20D0D0;color: #ffff80;}\n"
3390 ".frontend {background: #e8e8d0;}\n"
3391 ".backend {background: #e8e8d0;}\n"
3392 ".active0 {background: #ff9090;}\n"
3393 ".active1 {background: #ffd020;}\n"
3394 ".active2 {background: #ffffa0;}\n"
3395 ".active3 {background: #c0ffc0;}\n"
3396 ".active4 {background: #e0e0e0;}\n"
3397 ".backup0 {background: #ff9090;}\n"
3398 ".backup1 {background: #ff80ff;}\n"
3399 ".backup2 {background: #c060ff;}\n"
3400 ".backup3 {background: #b0d0ff;}\n"
3401 ".backup4 {background: #e0e0e0;}\n"
3402 "table.tbl { border-collapse: collapse; border-style: none;}\n"
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3403 "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]3404 "table.tbl th { border-width: 1px; border-style: solid solid solid solid; border-color: gray;}\n"
3405 "table.tbl th.empty { border-style: none; empty-cells: hide;}\n"
3406 "table.lgd { border-collapse: collapse; border-width: 1px; border-style: none none none solid; border-color: black;}\n"
3407 "table.lgd td { border-width: 1px; border-style: solid solid solid solid; border-color: gray; padding: 2px;}\n"
3408 "table.lgd td.noborder { border-style: none; padding: 2px; white-space: nowrap;}\n"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3409 "-->\n"
3410 "</style></head>\n");
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3411
3412 if (buffer_write_chunk(rep, &msg) != 0)
3413 return 0;
3414
3415 s->data_state = DATA_ST_INFO;
3416 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3417
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3418 case DATA_ST_INFO:
3419 up = (now.tv_sec - start_date.tv_sec);
3420
3421 /* WARNING! this has to fit the first packet too.
3422 * We are around 3.5 kB, add adding entries will
3423 * become tricky if we want to support 4kB buffers !
3424 */
3425 chunk_printf(&msg, sizeof(trash),
3426 "<body><h1><a href=\"" PRODUCT_URL "\" style=\"text-decoration: none;\">"
3427 PRODUCT_NAME "</a></h1>\n"
3428 "<h2>Statistics Report for pid %d</h2>\n"
3429 "<hr width=\"100%%\" class=\"hr\">\n"
3430 "<h3>&gt; General process information</h3>\n"
3431 "<table border=0 cols=3><tr><td align=\"left\" nowrap width=\"1%%\">\n"
3432 "<p><b>pid = </b> %d (nbproc = %d)<br>\n"
3433 "<b>uptime = </b> %dd %dh%02dm%02ds<br>\n"
3434 "<b>system limits :</b> memmax = %s%s ; ulimit-n = %d<br>\n"
3435 "<b>maxsock = </b> %d<br>\n"
3436 "<b>maxconn = </b> %d (current conns = %d)<br>\n"
3437 "</td><td align=\"center\" nowrap>\n"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3438 "<table class=\"lgd\"><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3439 "<td class=\"active3\">&nbsp;</td><td class=\"noborder\">active UP </td>"
3440 "<td class=\"backup3\">&nbsp;</td><td class=\"noborder\">backup UP </td>"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3441 "</tr><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3442 "<td class=\"active2\"></td><td class=\"noborder\">active UP, going down </td>"
3443 "<td class=\"backup2\"></td><td class=\"noborder\">backup UP, going down </td>"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3444 "</tr><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3445 "<td class=\"active1\"></td><td class=\"noborder\">active DOWN, going up </td>"
3446 "<td class=\"backup1\"></td><td class=\"noborder\">backup DOWN, going up </td>"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3447 "</tr><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3448 "<td class=\"active0\"></td><td class=\"noborder\">active or backup DOWN &nbsp;</td>"
3449 "<td class=\"active4\"></td><td class=\"noborder\">not checked </td>"
3450 "</tr></table>\n"
3451 "</td>"
3452 "<td align=\"left\" nowrap width=\"1%%\">"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3453 "<b>External ressources:</b><ul style=\"margin-top: 0.25em;\">\n"
3454 "<li><a href=\"" PRODUCT_URL "\">Primary site</a><br>\n"
3455 "<li><a href=\"" PRODUCT_URL_UPD "\">Updates (v" PRODUCT_BRANCH ")</a><br>\n"
3456 "<li><a href=\"" PRODUCT_URL_DOC "\">Online manual</a><br>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3457 "</ul>"
3458 "</td>"
3459 "</tr></table>\n"
3460 "",
3461 pid, pid, global.nbproc,
3462 up / 86400, (up % 86400) / 3600,
3463 (up % 3600) / 60, (up % 60),
3464 global.rlimit_memmax ? ultoa(global.rlimit_memmax) : "unlimited",
3465 global.rlimit_memmax ? " MB" : "",
3466 global.rlimit_nofile,
3467 global.maxsock,
3468 global.maxconn,
3469 actconn
3470 );
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3471
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3472 if (buffer_write_chunk(rep, &msg) != 0)
3473 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3474
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3475 memset(&s->data_ctx, 0, sizeof(s->data_ctx));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3476
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3477 s->data_ctx.stats.px = proxy;
3478 s->data_ctx.stats.px_st = DATA_ST_PX_INIT;
3479 s->data_state = DATA_ST_LIST;
3480 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3481
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3482 case DATA_ST_LIST:
3483 /* dump proxies */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3484 while (s->data_ctx.stats.px) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3485 px = s->data_ctx.stats.px;
3486 /* skip the disabled proxies and non-networked ones */
3487 if (px->state != PR_STSTOPPED && (px->cap & (PR_CAP_FE | PR_CAP_BE)))
3488 if (produce_content_stats_proxy(s, px) == 0)
3489 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3490
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3491 s->data_ctx.stats.px = px->next;
3492 s->data_ctx.stats.px_st = DATA_ST_PX_INIT;
3493 }
3494 /* here, we just have reached the last proxy */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3495
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3496 s->data_state = DATA_ST_END;
3497 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3498
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3499 case DATA_ST_END:
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]3500 chunk_printf(&msg, sizeof(trash), "</body></html>\n");
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3501 if (buffer_write_chunk(rep, &msg) != 0)
3502 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3503
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3504 s->data_state = DATA_ST_FIN;
3505 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3506
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3507 case DATA_ST_FIN:
3508 s->flags &= ~SN_SELF_GEN;
3509 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3510
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3511 default:
3512 /* unknown state ! */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3513 s->txn.status = 500;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3514 client_retnclose(s, error_message(s, HTTP_ERR_500));
3515 if (!(s->flags & SN_ERR_MASK))
3516 s->flags |= SN_ERR_PRXCOND;
3517 if (!(s->flags & SN_FINST_MASK))
3518 s->flags |= SN_FINST_R;
3519 s->flags &= ~SN_SELF_GEN;
3520 return 1;
3521 }
3522}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3523
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3524
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3525/*
3526 * Dumps statistics for a proxy.
3527 * Returns 0 if it had to stop dumping data because of lack of buffer space,
3528 * ot non-zero if everything completed.
3529 */
3530int produce_content_stats_proxy(struct session *s, struct proxy *px)
3531{
3532 struct buffer *rep = s->rep;
3533 struct server *sv;
3534 struct chunk msg;
3535
3536 msg.len = 0;
3537 msg.str = trash;
3538
3539 switch (s->data_ctx.stats.px_st) {
3540 case DATA_ST_PX_INIT:
3541 /* we are on a new proxy */
3542
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3543 if (s->be->uri_auth && s->be->uri_auth->scope) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3544 /* we have a limited scope, we have to check the proxy name */
3545 struct stat_scope *scope;
3546 int len;
3547
3548 len = strlen(px->id);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3549 scope = s->be->uri_auth->scope;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3550
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3551 while (scope) {
3552 /* match exact proxy name */
3553 if (scope->px_len == len && !memcmp(px->id, scope->px_id, len))
3554 break;
3555
3556 /* match '.' which means 'self' proxy */
3557 if (!strcmp(scope->px_id, ".") && px == s->fe)
3558 break;
3559 scope = scope->next;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3560 }
3561
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3562 /* proxy name not found : don't dump anything */
3563 if (scope == NULL)
3564 return 1;
3565 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3566
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3567 s->data_ctx.stats.px_st = DATA_ST_PX_TH;
3568 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3569
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3570 case DATA_ST_PX_TH:
3571 /* print a new table */
3572 chunk_printf(&msg, sizeof(trash),
3573 "<table cols=\"20\" class=\"tbl\" width=\"100%%\">\n"
3574 "<tr align=\"center\" class=\"titre\">"
3575 "<th colspan=2 class=\"pxname\">%s</th>"
3576 "<th colspan=18 class=\"empty\"></th>"
3577 "</tr>\n"
3578 "<tr align=\"center\" class=\"titre\">"
3579 "<th rowspan=2></th>"
3580 "<th colspan=2>Queue</th><th colspan=4>Sessions</th>"
3581 "<th colspan=2>Bytes</th><th colspan=2>Denied</th>"
3582 "<th colspan=3>Errors</th><th colspan=6>Server</th>"
3583 "</tr>\n"
3584 "<tr align=\"center\" class=\"titre\">"
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3585 "<th>Cur</th><th>Max</th><th>Cur</th><th>Max</th>"
3586 "<th>Limit</th><th>Cumul</th><th>In</th><th>Out</th>"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3587 "<th>Req</th><th>Resp</th><th>Req</th><th>Conn</th>"
3588 "<th>Resp</th><th>Status</th><th>Weight</th><th>Act</th>"
3589 "<th>Bck</th><th>Check</th><th>Down</th></tr>\n"
3590 "",
3591 px->id);
3592
3593 if (buffer_write_chunk(rep, &msg) != 0)
3594 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3595
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3596 s->data_ctx.stats.px_st = DATA_ST_PX_FE;
3597 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3598
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3599 case DATA_ST_PX_FE:
3600 /* print the frontend */
3601 if (px->cap & PR_CAP_FE) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3602 chunk_printf(&msg, sizeof(trash),
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3603 /* name, queue */
3604 "<tr align=center class=\"frontend\"><td>Frontend</td><td colspan=2></td>"
3605 /* sessions : current, max, limit, cumul. */
3606 "<td align=right>%d</td><td align=right>%d</td><td align=right>%d</td><td align=right>%d</td>"
3607 /* bytes : in, out */
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3608 "<td align=right>%lld</td><td align=right>%lld</td>"
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3609 /* denied: req, resp */
3610 "<td align=right>%d</td><td align=right>%d</td>"
3611 /* errors : request, connect, response */
3612 "<td align=right>%d</td><td align=right></td><td align=right></td>"
3613 /* server status : reflect backend status */
3614 "<td align=center>%s</td>"
3615 /* rest of server: nothing */
3616 "<td align=center colspan=5></td></tr>"
3617 "",
3618 px->feconn, px->feconn_max, px->maxconn, px->cum_feconn,
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3619 px->bytes_in, px->bytes_out,
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3620 px->denied_req, px->denied_resp,
3621 px->failed_req,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3622 px->state == PR_STRUN ? "OPEN" :
3623 px->state == PR_STIDLE ? "FULL" : "STOP");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3624
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3625 if (buffer_write_chunk(rep, &msg) != 0)
3626 return 0;
3627 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3628
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3629 s->data_ctx.stats.sv = px->srv; /* may be NULL */
3630 s->data_ctx.stats.px_st = DATA_ST_PX_SV;
3631 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3632
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3633 case DATA_ST_PX_SV:
3634 /* stats.sv has been initialized above */
3635 while (s->data_ctx.stats.sv != NULL) {
3636 static char *srv_hlt_st[5] = { "DOWN", "DN %d/%d &uarr;", "UP %d/%d &darr;", "UP", "<i>no check</i>" };
3637 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]3638
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3639 sv = s->data_ctx.stats.sv;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3640
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3641 /* FIXME: produce some small strings for "UP/DOWN x/y &#xxxx;" */
3642 if (!(sv->state & SRV_CHECKED))
3643 sv_state = 4;
3644 else if (sv->state & SRV_RUNNING)
3645 if (sv->health == sv->rise + sv->fall - 1)
3646 sv_state = 3; /* UP */
3647 else
3648 sv_state = 2; /* going down */
3649 else
3650 if (sv->health)
3651 sv_state = 1; /* going up */
3652 else
3653 sv_state = 0; /* DOWN */
3654
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3655 chunk_printf(&msg, sizeof(trash),
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3656 /* name */
3657 "<tr align=\"center\" class=\"%s%d\"><td>%s</td>"
3658 /* queue : current, max */
3659 "<td align=right>%d</td><td align=right>%d</td>"
3660 /* sessions : current, max, limit, cumul */
3661 "<td align=right>%d</td><td align=right>%d</td><td align=right>%s</td><td align=right>%d</td>"
3662 /* bytes : in, out */
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3663 "<td align=right>%lld</td><td align=right>%lld</td>"
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3664 /* denied: req, resp */
3665 "<td align=right></td><td align=right>%d</td>"
3666 /* errors : request, connect, response */
3667 "<td align=right></td><td align=right>%d</td><td align=right>%d</td>\n"
3668 "",
Willy Tarreau368e96a2007-01-07 00:16:15 +0100[diff] [blame]3669 (sv->state & SRV_BACKUP) ? "backup" : "active",
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3670 sv_state, sv->id,
3671 sv->nbpend, sv->nbpend_max,
3672 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]3673 sv->bytes_in, sv->bytes_out,
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3674 sv->failed_secu,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3675 sv->failed_conns, sv->failed_resp);
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3676
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3677 /* status */
3678 chunk_printf(&msg, sizeof(trash), "<td nowrap>");
3679 chunk_printf(&msg, sizeof(trash),
3680 srv_hlt_st[sv_state],
3681 (sv->state & SRV_RUNNING) ? (sv->health - sv->rise + 1) : (sv->health),
3682 (sv->state & SRV_RUNNING) ? (sv->fall) : (sv->rise));
3683
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3684 chunk_printf(&msg, sizeof(trash),
3685 /* weight */
3686 "</td><td>%d</td>"
3687 /* act, bck */
3688 "<td>%s</td><td>%s</td>"
3689 "",
Willy Tarreau417fae02007-03-25 21:16:40 +0200[diff] [blame]3690 sv->uweight,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3691 (sv->state & SRV_BACKUP) ? "-" : "Y",
3692 (sv->state & SRV_BACKUP) ? "Y" : "-");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3693
3694 /* check failures : unique, fatal */
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3695 if (sv->state & SRV_CHECKED)
3696 chunk_printf(&msg, sizeof(trash),
3697 "<td align=right>%d</td><td align=right>%d</td></tr>\n",
3698 sv->failed_checks, sv->down_trans);
3699 else
3700 chunk_printf(&msg, sizeof(trash),
3701 "<td colspan=2></td></tr>\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3702
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3703 if (buffer_write_chunk(rep, &msg) != 0)
3704 return 0;
3705
3706 s->data_ctx.stats.sv = sv->next;
3707 } /* while sv */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3708
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3709 s->data_ctx.stats.px_st = DATA_ST_PX_BE;
3710 /* fall through */
3711
3712 case DATA_ST_PX_BE:
3713 /* print the backend */
3714 if (px->cap & PR_CAP_BE) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3715 chunk_printf(&msg, sizeof(trash),
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3716 /* name */
3717 "<tr align=center class=\"backend\"><td>Backend</td>"
3718 /* queue : current, max */
3719 "<td align=right>%d</td><td align=right>%d</td>"
3720 /* sessions : current, max, limit, cumul. */
3721 "<td align=right>%d</td><td align=right>%d</td><td align=right>%d</td><td align=right>%d</td>"
3722 /* bytes : in, out */
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3723 "<td align=right>%lld</td><td align=right>%lld</td>"
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3724 /* denied: req, resp */
3725 "<td align=right>%d</td><td align=right>%d</td>"
3726 /* errors : request, connect, response */
3727 "<td align=right></td><td align=right>%d</td><td align=right>%d</td>\n"
3728 /* server status : reflect backend status (up/down) : we display UP
3729 * if the backend has known working servers or if it has no server at
3730 * all (eg: for stats). Tthen we display the total weight, number of
3731 * active and backups. */
3732 "<td align=center>%s</td><td align=center>%d</td>"
3733 "<td align=center>%d</td><td align=center>%d</td>"
3734 /* rest of server: nothing */
3735 "<td align=center colspan=2></td></tr>"
3736 "",
3737 px->nbpend /* or px->totpend ? */, px->nbpend_max,
3738 px->beconn, px->beconn_max, px->fullconn, px->cum_beconn,
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3739 px->bytes_in, px->bytes_out,
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3740 px->denied_req, px->denied_resp,
3741 px->failed_conns, px->failed_resp,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3742 (px->srv_map_sz > 0 || !px->srv) ? "UP" : "DOWN",
3743 px->srv_map_sz, px->srv_act, px->srv_bck);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3744
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3745 if (buffer_write_chunk(rep, &msg) != 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3746 return 0;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3747 }
3748
3749 s->data_ctx.stats.px_st = DATA_ST_PX_END;
3750 /* fall through */
3751
3752 case DATA_ST_PX_END:
3753 chunk_printf(&msg, sizeof(trash), "</table><p>\n");
3754
3755 if (buffer_write_chunk(rep, &msg) != 0)
3756 return 0;
3757
3758 s->data_ctx.stats.px_st = DATA_ST_PX_FIN;
3759 /* fall through */
3760
3761 case DATA_ST_PX_FIN:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3762 return 1;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3763
3764 default:
3765 /* unknown state, we should put an abort() here ! */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3766 return 1;
3767 }
3768}
3769
3770
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3771/* Iterate the same filter through all request headers.
3772 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3773 * Since it can manage the switch to another backend, it updates the per-proxy
3774 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3775 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3776int 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]3777{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3778 char term;
3779 char *cur_ptr, *cur_end, *cur_next;
3780 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3781 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3782 struct hdr_idx_elem *cur_hdr;
3783 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]3784
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3785 last_hdr = 0;
3786
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3787 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3788 old_idx = 0;
3789
3790 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3791 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3792 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3793 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3794 (exp->action == ACT_ALLOW ||
3795 exp->action == ACT_DENY ||
3796 exp->action == ACT_TARPIT))
3797 return 0;
3798
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3799 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3800 if (!cur_idx)
3801 break;
3802
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3803 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3804 cur_ptr = cur_next;
3805 cur_end = cur_ptr + cur_hdr->len;
3806 cur_next = cur_end + cur_hdr->cr + 1;
3807
3808 /* Now we have one header between cur_ptr and cur_end,
3809 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3810 */
3811
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3812 /* The annoying part is that pattern matching needs
3813 * that we modify the contents to null-terminate all
3814 * strings before testing them.
3815 */
3816
3817 term = *cur_end;
3818 *cur_end = '\0';
3819
3820 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3821 switch (exp->action) {
3822 case ACT_SETBE:
3823 /* It is not possible to jump a second time.
3824 * FIXME: should we return an HTTP/500 here so that
3825 * the admin knows there's a problem ?
3826 */
3827 if (t->be != t->fe)
3828 break;
3829
3830 /* Swithing Proxy */
3831 t->be = (struct proxy *) exp->replace;
3832
3833 /* right now, the backend switch is not too much complicated
3834 * because we have associated req_cap and rsp_cap to the
3835 * frontend, and the beconn will be updated later.
3836 */
3837
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3838 t->rep->rto = t->req->wto = t->be->srvtimeout;
3839 t->req->cto = t->be->contimeout;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3840 last_hdr = 1;
3841 break;
3842
3843 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3844 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3845 last_hdr = 1;
3846 break;
3847
3848 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3849 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3850 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3851 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3852 break;
3853
3854 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3855 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3856 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3857 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3858 break;
3859
3860 case ACT_REPLACE:
3861 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3862 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3863 /* FIXME: if the user adds a newline in the replacement, the
3864 * index will not be recalculated for now, and the new line
3865 * will not be counted as a new header.
3866 */
3867
3868 cur_end += delta;
3869 cur_next += delta;
3870 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3871 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3872 break;
3873
3874 case ACT_REMOVE:
3875 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
3876 cur_next += delta;
3877
3878 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3879 txn->req.eoh += delta;
3880 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3881 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3882 cur_hdr->len = 0;
3883 cur_end = NULL; /* null-term has been rewritten */
3884 break;
3885
3886 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3887 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3888 if (cur_end)
3889 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3890
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3891 /* keep the link from this header to next one in case of later
3892 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3893 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3894 old_idx = cur_idx;
3895 }
3896 return 0;
3897}
3898
3899
3900/* Apply the filter to the request line.
3901 * Returns 0 if nothing has been done, 1 if the filter has been applied,
3902 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3903 * Since it can manage the switch to another backend, it updates the per-proxy
3904 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3905 */
3906int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
3907{
3908 char term;
3909 char *cur_ptr, *cur_end;
3910 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3911 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3912 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3913
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3914
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3915 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3916 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3917 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3918 (exp->action == ACT_ALLOW ||
3919 exp->action == ACT_DENY ||
3920 exp->action == ACT_TARPIT))
3921 return 0;
3922 else if (exp->action == ACT_REMOVE)
3923 return 0;
3924
3925 done = 0;
3926
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3927 cur_ptr = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3928 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3929
3930 /* Now we have the request line between cur_ptr and cur_end */
3931
3932 /* The annoying part is that pattern matching needs
3933 * that we modify the contents to null-terminate all
3934 * strings before testing them.
3935 */
3936
3937 term = *cur_end;
3938 *cur_end = '\0';
3939
3940 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3941 switch (exp->action) {
3942 case ACT_SETBE:
3943 /* It is not possible to jump a second time.
3944 * FIXME: should we return an HTTP/500 here so that
3945 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3946 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3947 if (t->be != t->fe)
3948 break;
3949
3950 /* Swithing Proxy */
3951 t->be = (struct proxy *) exp->replace;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3952
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3953 /* right now, the backend switch is not too much complicated
3954 * because we have associated req_cap and rsp_cap to the
3955 * frontend, and the beconn will be updated later.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3956 */
3957
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3958 t->rep->rto = t->req->wto = t->be->srvtimeout;
3959 t->req->cto = t->be->contimeout;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3960 done = 1;
3961 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3962
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3963 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3964 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3965 done = 1;
3966 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3967
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3968 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3969 txn->flags |= TX_CLDENY;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3970 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3971 done = 1;
3972 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3973
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3974 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3975 txn->flags |= TX_CLTARPIT;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3976 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3977 done = 1;
3978 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3979
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3980 case ACT_REPLACE:
3981 *cur_end = term; /* restore the string terminator */
3982 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3983 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3984 /* FIXME: if the user adds a newline in the replacement, the
3985 * index will not be recalculated for now, and the new line
3986 * will not be counted as a new header.
3987 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3988
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3989 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3990 cur_end += delta;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3991
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]3992 txn->req.sol = req->data + txn->req.som; /* should be equal to txn->sol */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3993 cur_end = (char *)http_parse_reqline(&txn->req, req->data,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3994 HTTP_MSG_RQMETH,
3995 cur_ptr, cur_end + 1,
3996 NULL, NULL);
3997 if (unlikely(!cur_end))
3998 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3999
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4000 /* we have a full request and we know that we have either a CR
4001 * or an LF at <ptr>.
4002 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4003 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
4004 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]4005 /* there is no point trying this regex on headers */
4006 return 1;
4007 }
4008 }
4009 *cur_end = term; /* restore the string terminator */
4010 return done;
4011}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]4012
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4013
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4014
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4015/*
4016 * Apply all the req filters <exp> to all headers in buffer <req> of session <t>.
4017 * 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]4018 * unparsable request. Since it can manage the switch to another backend, it
4019 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4020 */
4021int apply_filters_to_request(struct session *t, struct buffer *req, struct hdr_exp *exp)
4022{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4023 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4024 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4025 while (exp && !(txn->flags & (TX_CLDENY|TX_CLTARPIT))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4026 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4027
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4028 /*
4029 * The interleaving of transformations and verdicts
4030 * makes it difficult to decide to continue or stop
4031 * the evaluation.
4032 */
4033
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4034 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4035 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4036 exp->action == ACT_TARPIT || exp->action == ACT_PASS)) {
4037 exp = exp->next;
4038 continue;
4039 }
4040
4041 /* Apply the filter to the request line. */
4042 ret = apply_filter_to_req_line(t, req, exp);
4043 if (unlikely(ret < 0))
4044 return -1;
4045
4046 if (likely(ret == 0)) {
4047 /* The filter did not match the request, it can be
4048 * iterated through all headers.
4049 */
4050 apply_filter_to_req_headers(t, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4051 }
4052 exp = exp->next;
4053 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4054 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4055}
4056
4057
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4058
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4059/*
4060 * Manager client-side cookie
4061 */
4062void manage_client_side_cookies(struct session *t, struct buffer *req)
4063{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4064 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4065 char *p1, *p2, *p3, *p4;
4066 char *del_colon, *del_cookie, *colon;
4067 int app_cookies;
4068
4069 appsess *asession_temp = NULL;
4070 appsess local_asession;
4071
4072 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4073 int cur_idx, old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4074
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4075 if (t->be->cookie_name == NULL &&
4076 t->be->appsession_name == NULL &&
4077 t->be->capture_name == NULL)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4078 return;
4079
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4080 /* Iterate through the headers.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4081 * we start with the start line.
4082 */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]4083 old_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4084 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4085
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4086 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4087 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4088 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4089
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4090 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4091 cur_ptr = cur_next;
4092 cur_end = cur_ptr + cur_hdr->len;
4093 cur_next = cur_end + cur_hdr->cr + 1;
4094
4095 /* We have one full header between cur_ptr and cur_end, and the
4096 * next header starts at cur_next. We're only interested in
4097 * "Cookie:" headers.
4098 */
4099
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4100 val = http_header_match2(cur_ptr, cur_end, "Cookie", 6);
4101 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4102 old_idx = cur_idx;
4103 continue;
4104 }
4105
4106 /* Now look for cookies. Conforming to RFC2109, we have to support
4107 * attributes whose name begin with a '$', and associate them with
4108 * the right cookie, if we want to delete this cookie.
4109 * So there are 3 cases for each cookie read :
4110 * 1) it's a special attribute, beginning with a '$' : ignore it.
4111 * 2) it's a server id cookie that we *MAY* want to delete : save
4112 * some pointers on it (last semi-colon, beginning of cookie...)
4113 * 3) it's an application cookie : we *MAY* have to delete a previous
4114 * "special" cookie.
4115 * At the end of loop, if a "special" cookie remains, we may have to
4116 * remove it. If no application cookie persists in the header, we
4117 * *MUST* delete it
4118 */
4119
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4120 colon = p1 = cur_ptr + val; /* first non-space char after 'Cookie:' */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4121
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4122 /* del_cookie == NULL => nothing to be deleted */
4123 del_colon = del_cookie = NULL;
4124 app_cookies = 0;
4125
4126 while (p1 < cur_end) {
4127 /* skip spaces and colons, but keep an eye on these ones */
4128 while (p1 < cur_end) {
4129 if (*p1 == ';' || *p1 == ',')
4130 colon = p1;
4131 else if (!isspace((int)*p1))
4132 break;
4133 p1++;
4134 }
4135
4136 if (p1 == cur_end)
4137 break;
4138
4139 /* p1 is at the beginning of the cookie name */
4140 p2 = p1;
4141 while (p2 < cur_end && *p2 != '=')
4142 p2++;
4143
4144 if (p2 == cur_end)
4145 break;
4146
4147 p3 = p2 + 1; /* skips the '=' sign */
4148 if (p3 == cur_end)
4149 break;
4150
4151 p4 = p3;
4152 while (p4 < cur_end && !isspace((int)*p4) && *p4 != ';' && *p4 != ',')
4153 p4++;
4154
4155 /* here, we have the cookie name between p1 and p2,
4156 * and its value between p3 and p4.
4157 * we can process it :
4158 *
4159 * Cookie: NAME=VALUE;
4160 * | || || |
4161 * | || || +--> p4
4162 * | || |+-------> p3
4163 * | || +--------> p2
4164 * | |+------------> p1
4165 * | +-------------> colon
4166 * +--------------------> cur_ptr
4167 */
4168
4169 if (*p1 == '$') {
4170 /* skip this one */
4171 }
4172 else {
4173 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4174 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4175 txn->cli_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4176 (p4 - p1 >= t->fe->capture_namelen) &&
4177 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4178 int log_len = p4 - p1;
4179
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4180 if ((txn->cli_cookie = pool_alloc(capture)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4181 Alert("HTTP logging : out of memory.\n");
4182 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4183 if (log_len > t->fe->capture_len)
4184 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4185 memcpy(txn->cli_cookie, p1, log_len);
4186 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4187 }
4188 }
4189
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4190 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4191 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4192 /* Cool... it's the right one */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4193 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4194 char *delim;
4195
4196 /* if we're in cookie prefix mode, we'll search the delimitor so that we
4197 * have the server ID betweek p3 and delim, and the original cookie between
4198 * delim+1 and p4. Otherwise, delim==p4 :
4199 *
4200 * Cookie: NAME=SRV~VALUE;
4201 * | || || | |
4202 * | || || | +--> p4
4203 * | || || +--------> delim
4204 * | || |+-----------> p3
4205 * | || +------------> p2
4206 * | |+----------------> p1
4207 * | +-----------------> colon
4208 * +------------------------> cur_ptr
4209 */
4210
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4211 if (t->be->options & PR_O_COOK_PFX) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4212 for (delim = p3; delim < p4; delim++)
4213 if (*delim == COOKIE_DELIM)
4214 break;
4215 }
4216 else
4217 delim = p4;
4218
4219
4220 /* Here, we'll look for the first running server which supports the cookie.
4221 * This allows to share a same cookie between several servers, for example
4222 * to dedicate backup servers to specific servers only.
4223 * However, to prevent clients from sticking to cookie-less backup server
4224 * when they have incidentely learned an empty cookie, we simply ignore
4225 * empty cookies and mark them as invalid.
4226 */
4227 if (delim == p3)
4228 srv = NULL;
4229
4230 while (srv) {
Willy Tarreau92f2ab12007-02-02 22:14:47 +0100[diff] [blame]4231 if (srv->cookie && (srv->cklen == delim - p3) &&
4232 !memcmp(p3, srv->cookie, delim - p3)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4233 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4234 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4235 txn->flags &= ~TX_CK_MASK;
4236 txn->flags |= TX_CK_VALID;
4237 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4238 t->srv = srv;
4239 break;
4240 } else {
4241 /* we found a server, but it's down */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4242 txn->flags &= ~TX_CK_MASK;
4243 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4244 }
4245 }
4246 srv = srv->next;
4247 }
4248
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4249 if (!srv && !(txn->flags & TX_CK_DOWN)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4250 /* no server matched this cookie */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4251 txn->flags &= ~TX_CK_MASK;
4252 txn->flags |= TX_CK_INVALID;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4253 }
4254
4255 /* depending on the cookie mode, we may have to either :
4256 * - delete the complete cookie if we're in insert+indirect mode, so that
4257 * the server never sees it ;
4258 * - remove the server id from the cookie value, and tag the cookie as an
4259 * application cookie so that it does not get accidentely removed later,
4260 * if we're in cookie prefix mode
4261 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4262 if ((t->be->options & PR_O_COOK_PFX) && (delim != p4)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4263 int delta; /* negative */
4264
4265 delta = buffer_replace2(req, p3, delim + 1, NULL, 0);
4266 p4 += delta;
4267 cur_end += delta;
4268 cur_next += delta;
4269 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4270 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4271
4272 del_cookie = del_colon = NULL;
4273 app_cookies++; /* protect the header from deletion */
4274 }
4275 else if (del_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4276 (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]4277 del_cookie = p1;
4278 del_colon = colon;
4279 }
4280 } else {
4281 /* now we know that we must keep this cookie since it's
4282 * not ours. But if we wanted to delete our cookie
4283 * earlier, we cannot remove the complete header, but we
4284 * can remove the previous block itself.
4285 */
4286 app_cookies++;
4287
4288 if (del_cookie != NULL) {
4289 int delta; /* negative */
4290
4291 delta = buffer_replace2(req, del_cookie, p1, NULL, 0);
4292 p4 += delta;
4293 cur_end += delta;
4294 cur_next += delta;
4295 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4296 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4297 del_cookie = del_colon = NULL;
4298 }
4299 }
4300
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4301 if ((t->be->appsession_name != NULL) &&
4302 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4303 /* first, let's see if the cookie is our appcookie*/
4304
4305 /* Cool... it's the right one */
4306
4307 asession_temp = &local_asession;
4308
4309 if ((asession_temp->sessid = pool_alloc_from(apools.sessid, apools.ses_msize)) == NULL) {
4310 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
4311 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
4312 return;
4313 }
4314
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4315 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4316 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4317 asession_temp->serverid = NULL;
4318
4319 /* only do insert, if lookup fails */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4320 if (chtbl_lookup(&(t->be->htbl_proxy), (void *) &asession_temp) != 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4321 if ((asession_temp = pool_alloc(appsess)) == NULL) {
4322 /* free previously allocated memory */
4323 pool_free_to(apools.sessid, local_asession.sessid);
4324 Alert("Not enough memory process_cli():asession:calloc().\n");
4325 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4326 return;
4327 }
4328
4329 asession_temp->sessid = local_asession.sessid;
4330 asession_temp->serverid = local_asession.serverid;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4331 chtbl_insert(&(t->be->htbl_proxy), (void *) asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4332 } else {
4333 /* free previously allocated memory */
4334 pool_free_to(apools.sessid, local_asession.sessid);
4335 }
4336
4337 if (asession_temp->serverid == NULL) {
4338 Alert("Found Application Session without matching server.\n");
4339 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4340 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4341 while (srv) {
4342 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4343 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4344 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4345 txn->flags &= ~TX_CK_MASK;
4346 txn->flags |= TX_CK_VALID;
4347 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4348 t->srv = srv;
4349 break;
4350 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4351 txn->flags &= ~TX_CK_MASK;
4352 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4353 }
4354 }
4355 srv = srv->next;
4356 }/* end while(srv) */
4357 }/* end else if server == NULL */
4358
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]4359 tv_ms_add(&asession_temp->expire, &now, t->be->appsession_timeout);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4360 }/* end if ((t->proxy->appsession_name != NULL) ... */
4361 }
4362
4363 /* we'll have to look for another cookie ... */
4364 p1 = p4;
4365 } /* while (p1 < cur_end) */
4366
4367 /* There's no more cookie on this line.
4368 * We may have marked the last one(s) for deletion.
4369 * We must do this now in two ways :
4370 * - if there is no app cookie, we simply delete the header ;
4371 * - if there are app cookies, we must delete the end of the
4372 * string properly, including the colon/semi-colon before
4373 * the cookie name.
4374 */
4375 if (del_cookie != NULL) {
4376 int delta;
4377 if (app_cookies) {
4378 delta = buffer_replace2(req, del_colon, cur_end, NULL, 0);
4379 cur_end = del_colon;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4380 cur_hdr->len += delta;
4381 } else {
4382 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4383
4384 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4385 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4386 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4387 cur_hdr->len = 0;
4388 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]4389 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4390 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4391 }
4392
4393 /* keep the link from this header to next one */
4394 old_idx = cur_idx;
4395 } /* end of cookie processing on this header */
4396}
4397
4398
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4399/* Iterate the same filter through all response headers contained in <rtr>.
4400 * Returns 1 if this filter can be stopped upon return, otherwise 0.
4401 */
4402int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4403{
4404 char term;
4405 char *cur_ptr, *cur_end, *cur_next;
4406 int cur_idx, old_idx, last_hdr;
4407 struct http_txn *txn = &t->txn;
4408 struct hdr_idx_elem *cur_hdr;
4409 int len, delta;
4410
4411 last_hdr = 0;
4412
4413 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4414 old_idx = 0;
4415
4416 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4417 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4418 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4419 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4420 (exp->action == ACT_ALLOW ||
4421 exp->action == ACT_DENY))
4422 return 0;
4423
4424 cur_idx = txn->hdr_idx.v[old_idx].next;
4425 if (!cur_idx)
4426 break;
4427
4428 cur_hdr = &txn->hdr_idx.v[cur_idx];
4429 cur_ptr = cur_next;
4430 cur_end = cur_ptr + cur_hdr->len;
4431 cur_next = cur_end + cur_hdr->cr + 1;
4432
4433 /* Now we have one header between cur_ptr and cur_end,
4434 * and the next header starts at cur_next.
4435 */
4436
4437 /* The annoying part is that pattern matching needs
4438 * that we modify the contents to null-terminate all
4439 * strings before testing them.
4440 */
4441
4442 term = *cur_end;
4443 *cur_end = '\0';
4444
4445 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4446 switch (exp->action) {
4447 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4448 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4449 last_hdr = 1;
4450 break;
4451
4452 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4453 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4454 last_hdr = 1;
4455 break;
4456
4457 case ACT_REPLACE:
4458 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4459 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4460 /* FIXME: if the user adds a newline in the replacement, the
4461 * index will not be recalculated for now, and the new line
4462 * will not be counted as a new header.
4463 */
4464
4465 cur_end += delta;
4466 cur_next += delta;
4467 cur_hdr->len += delta;
4468 txn->rsp.eoh += delta;
4469 break;
4470
4471 case ACT_REMOVE:
4472 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4473 cur_next += delta;
4474
4475 /* FIXME: this should be a separate function */
4476 txn->rsp.eoh += delta;
4477 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4478 txn->hdr_idx.used--;
4479 cur_hdr->len = 0;
4480 cur_end = NULL; /* null-term has been rewritten */
4481 break;
4482
4483 }
4484 }
4485 if (cur_end)
4486 *cur_end = term; /* restore the string terminator */
4487
4488 /* keep the link from this header to next one in case of later
4489 * removal of next header.
4490 */
4491 old_idx = cur_idx;
4492 }
4493 return 0;
4494}
4495
4496
4497/* Apply the filter to the status line in the response buffer <rtr>.
4498 * Returns 0 if nothing has been done, 1 if the filter has been applied,
4499 * or -1 if a replacement resulted in an invalid status line.
4500 */
4501int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4502{
4503 char term;
4504 char *cur_ptr, *cur_end;
4505 int done;
4506 struct http_txn *txn = &t->txn;
4507 int len, delta;
4508
4509
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4510 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4511 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4512 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4513 (exp->action == ACT_ALLOW ||
4514 exp->action == ACT_DENY))
4515 return 0;
4516 else if (exp->action == ACT_REMOVE)
4517 return 0;
4518
4519 done = 0;
4520
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4521 cur_ptr = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4522 cur_end = cur_ptr + txn->rsp.sl.rq.l;
4523
4524 /* Now we have the status line between cur_ptr and cur_end */
4525
4526 /* The annoying part is that pattern matching needs
4527 * that we modify the contents to null-terminate all
4528 * strings before testing them.
4529 */
4530
4531 term = *cur_end;
4532 *cur_end = '\0';
4533
4534 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4535 switch (exp->action) {
4536 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4537 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4538 done = 1;
4539 break;
4540
4541 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4542 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4543 done = 1;
4544 break;
4545
4546 case ACT_REPLACE:
4547 *cur_end = term; /* restore the string terminator */
4548 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4549 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4550 /* FIXME: if the user adds a newline in the replacement, the
4551 * index will not be recalculated for now, and the new line
4552 * will not be counted as a new header.
4553 */
4554
4555 txn->rsp.eoh += delta;
4556 cur_end += delta;
4557
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]4558 txn->rsp.sol = rtr->data + txn->rsp.som; /* should be equal to txn->sol */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4559 cur_end = (char *)http_parse_stsline(&txn->rsp, rtr->data,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]4560 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4561 cur_ptr, cur_end + 1,
4562 NULL, NULL);
4563 if (unlikely(!cur_end))
4564 return -1;
4565
4566 /* we have a full respnse and we know that we have either a CR
4567 * or an LF at <ptr>.
4568 */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4569 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]4570 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.rq.l, *cur_end == '\r');
4571 /* there is no point trying this regex on headers */
4572 return 1;
4573 }
4574 }
4575 *cur_end = term; /* restore the string terminator */
4576 return done;
4577}
4578
4579
4580
4581/*
4582 * Apply all the resp filters <exp> to all headers in buffer <rtr> of session <t>.
4583 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
4584 * unparsable response.
4585 */
4586int apply_filters_to_response(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4587{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4588 struct http_txn *txn = &t->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4589 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4590 while (exp && !(txn->flags & TX_SVDENY)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4591 int ret;
4592
4593 /*
4594 * The interleaving of transformations and verdicts
4595 * makes it difficult to decide to continue or stop
4596 * the evaluation.
4597 */
4598
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4599 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4600 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4601 exp->action == ACT_PASS)) {
4602 exp = exp->next;
4603 continue;
4604 }
4605
4606 /* Apply the filter to the status line. */
4607 ret = apply_filter_to_sts_line(t, rtr, exp);
4608 if (unlikely(ret < 0))
4609 return -1;
4610
4611 if (likely(ret == 0)) {
4612 /* The filter did not match the response, it can be
4613 * iterated through all headers.
4614 */
4615 apply_filter_to_resp_headers(t, rtr, exp);
4616 }
4617 exp = exp->next;
4618 }
4619 return 0;
4620}
4621
4622
4623
4624/*
4625 * Manager server-side cookies
4626 */
4627void manage_server_side_cookies(struct session *t, struct buffer *rtr)
4628{
4629 struct http_txn *txn = &t->txn;
4630 char *p1, *p2, *p3, *p4;
4631
4632 appsess *asession_temp = NULL;
4633 appsess local_asession;
4634
4635 char *cur_ptr, *cur_end, *cur_next;
4636 int cur_idx, old_idx, delta;
4637
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4638 if (t->be->cookie_name == NULL &&
4639 t->be->appsession_name == NULL &&
4640 t->be->capture_name == NULL &&
4641 !(t->be->options & PR_O_CHK_CACHE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4642 return;
4643
4644 /* Iterate through the headers.
4645 * we start with the start line.
4646 */
4647 old_idx = 0;
4648 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4649
4650 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
4651 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4652 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4653
4654 cur_hdr = &txn->hdr_idx.v[cur_idx];
4655 cur_ptr = cur_next;
4656 cur_end = cur_ptr + cur_hdr->len;
4657 cur_next = cur_end + cur_hdr->cr + 1;
4658
4659 /* We have one full header between cur_ptr and cur_end, and the
4660 * next header starts at cur_next. We're only interested in
4661 * "Cookie:" headers.
4662 */
4663
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4664 val = http_header_match2(cur_ptr, cur_end, "Set-Cookie", 10);
4665 if (!val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4666 old_idx = cur_idx;
4667 continue;
4668 }
4669
4670 /* OK, right now we know we have a set-cookie at cur_ptr */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4671 txn->flags |= TX_SCK_ANY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4672
4673
4674 /* maybe we only wanted to see if there was a set-cookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4675 if (t->be->cookie_name == NULL &&
4676 t->be->appsession_name == NULL &&
4677 t->be->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4678 return;
4679
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4680 p1 = cur_ptr + val; /* first non-space char after 'Set-Cookie:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4681
4682 while (p1 < cur_end) { /* in fact, we'll break after the first cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4683 if (p1 == cur_end || *p1 == ';') /* end of cookie */
4684 break;
4685
4686 /* p1 is at the beginning of the cookie name */
4687 p2 = p1;
4688
4689 while (p2 < cur_end && *p2 != '=' && *p2 != ';')
4690 p2++;
4691
4692 if (p2 == cur_end || *p2 == ';') /* next cookie */
4693 break;
4694
4695 p3 = p2 + 1; /* skip the '=' sign */
4696 if (p3 == cur_end)
4697 break;
4698
4699 p4 = p3;
4700 while (p4 < cur_end && !isspace((int)*p4) && *p4 != ';')
4701 p4++;
4702
4703 /* here, we have the cookie name between p1 and p2,
4704 * and its value between p3 and p4.
4705 * we can process it.
4706 */
4707
4708 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4709 if (t->be->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4710 txn->srv_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4711 (p4 - p1 >= t->be->capture_namelen) &&
4712 memcmp(p1, t->be->capture_name, t->be->capture_namelen) == 0) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4713 int log_len = p4 - p1;
4714
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4715 if ((txn->srv_cookie = pool_alloc(capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4716 Alert("HTTP logging : out of memory.\n");
4717 }
4718
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4719 if (log_len > t->be->capture_len)
4720 log_len = t->be->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4721 memcpy(txn->srv_cookie, p1, log_len);
4722 txn->srv_cookie[log_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4723 }
4724
4725 /* now check if we need to process it for persistence */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4726 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4727 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4728 /* Cool... it's the right one */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4729 txn->flags |= TX_SCK_SEEN;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4730
4731 /* If the cookie is in insert mode on a known server, we'll delete
4732 * this occurrence because we'll insert another one later.
4733 * We'll delete it too if the "indirect" option is set and we're in
4734 * a direct access. */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4735 if (((t->srv) && (t->be->options & PR_O_COOK_INS)) ||
4736 ((t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_IND))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4737 /* this header must be deleted */
4738 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4739 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4740 txn->hdr_idx.used--;
4741 cur_hdr->len = 0;
4742 cur_next += delta;
4743 txn->rsp.eoh += delta;
4744
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4745 txn->flags |= TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4746 }
4747 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4748 (t->be->options & PR_O_COOK_RW)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4749 /* replace bytes p3->p4 with the cookie name associated
4750 * with this server since we know it.
4751 */
4752 delta = buffer_replace2(rtr, p3, p4, t->srv->cookie, t->srv->cklen);
4753 cur_hdr->len += delta;
4754 cur_next += delta;
4755 txn->rsp.eoh += delta;
4756
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4757 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4758 }
4759 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4760 (t->be->options & PR_O_COOK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4761 /* insert the cookie name associated with this server
4762 * before existing cookie, and insert a delimitor between them..
4763 */
4764 delta = buffer_replace2(rtr, p3, p3, t->srv->cookie, t->srv->cklen + 1);
4765 cur_hdr->len += delta;
4766 cur_next += delta;
4767 txn->rsp.eoh += delta;
4768
4769 p3[t->srv->cklen] = COOKIE_DELIM;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4770 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4771 }
4772 }
4773 /* next, let's see if the cookie is our appcookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4774 else if ((t->be->appsession_name != NULL) &&
4775 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4776
4777 /* Cool... it's the right one */
4778
4779 size_t server_id_len = strlen(t->srv->id) + 1;
4780 asession_temp = &local_asession;
4781
4782 if ((asession_temp->sessid = pool_alloc_from(apools.sessid, apools.ses_msize)) == NULL) {
4783 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4784 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4785 return;
4786 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4787 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4788 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4789 asession_temp->serverid = NULL;
4790
4791 /* only do insert, if lookup fails */
4792 if (chtbl_lookup(&(t->be->htbl_proxy), (void *) &asession_temp) != 0) {
4793 if ((asession_temp = pool_alloc(appsess)) == NULL) {
4794 Alert("Not enough Memory process_srv():asession:calloc().\n");
4795 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
4796 return;
4797 }
4798 asession_temp->sessid = local_asession.sessid;
4799 asession_temp->serverid = local_asession.serverid;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4800 chtbl_insert(&(t->be->htbl_proxy), (void *) asession_temp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4801 }/* end if (chtbl_lookup()) */
4802 else {
4803 /* free wasted memory */
4804 pool_free_to(apools.sessid, local_asession.sessid);
4805 } /* end else from if (chtbl_lookup()) */
4806
4807 if (asession_temp->serverid == NULL) {
4808 if ((asession_temp->serverid = pool_alloc_from(apools.serverid, apools.ser_msize)) == NULL) {
4809 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4810 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4811 return;
4812 }
4813 asession_temp->serverid[0] = '\0';
4814 }
4815
4816 if (asession_temp->serverid[0] == '\0')
4817 memcpy(asession_temp->serverid, t->srv->id, server_id_len);
4818
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]4819 tv_ms_add(&asession_temp->expire, &now, t->be->appsession_timeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4820
4821#if defined(DEBUG_HASH)
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4822 print_table(&(t->be->htbl_proxy));
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4823#endif
4824 }/* end if ((t->proxy->appsession_name != NULL) ... */
4825 break; /* we don't want to loop again since there cannot be another cookie on the same line */
4826 } /* we're now at the end of the cookie value */
4827
4828 /* keep the link from this header to next one */
4829 old_idx = cur_idx;
4830 } /* end of cookie processing on this header */
4831}
4832
4833
4834
4835/*
4836 * Check if response is cacheable or not. Updates t->flags.
4837 */
4838void check_response_for_cacheability(struct session *t, struct buffer *rtr)
4839{
4840 struct http_txn *txn = &t->txn;
4841 char *p1, *p2;
4842
4843 char *cur_ptr, *cur_end, *cur_next;
4844 int cur_idx;
4845
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4846 if (!txn->flags & TX_CACHEABLE)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4847 return;
4848
4849 /* Iterate through the headers.
4850 * we start with the start line.
4851 */
4852 cur_idx = 0;
4853 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4854
4855 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4856 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4857 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4858
4859 cur_hdr = &txn->hdr_idx.v[cur_idx];
4860 cur_ptr = cur_next;
4861 cur_end = cur_ptr + cur_hdr->len;
4862 cur_next = cur_end + cur_hdr->cr + 1;
4863
4864 /* We have one full header between cur_ptr and cur_end, and the
4865 * next header starts at cur_next. We're only interested in
4866 * "Cookie:" headers.
4867 */
4868
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4869 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
4870 if (val) {
4871 if ((cur_end - (cur_ptr + val) >= 8) &&
4872 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
4873 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
4874 return;
4875 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4876 }
4877
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4878 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
4879 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4880 continue;
4881
4882 /* OK, right now we know we have a cache-control header at cur_ptr */
4883
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4884 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4885
4886 if (p1 >= cur_end) /* no more info */
4887 continue;
4888
4889 /* p1 is at the beginning of the value */
4890 p2 = p1;
4891
4892 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((int)*p2))
4893 p2++;
4894
4895 /* we have a complete value between p1 and p2 */
4896 if (p2 < cur_end && *p2 == '=') {
4897 /* we have something of the form no-cache="set-cookie" */
4898 if ((cur_end - p1 >= 21) &&
4899 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
4900 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4901 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4902 continue;
4903 }
4904
4905 /* OK, so we know that either p2 points to the end of string or to a comma */
4906 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
4907 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
4908 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
4909 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4910 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4911 return;
4912 }
4913
4914 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4915 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4916 continue;
4917 }
4918 }
4919}
4920
4921
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4922/*
4923 * Try to retrieve a known appsession in the URI, then the associated server.
4924 * If the server is found, it's assigned to the session.
4925 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4926void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4927{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4928 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4929 appsess *asession_temp = NULL;
4930 appsess local_asession;
4931 char *request_line;
4932
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4933 if (t->be->appsession_name == NULL ||
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]4934 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST) ||
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4935 (request_line = memchr(begin, ';', len)) == NULL ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4936 ((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]4937 return;
4938
4939 /* skip ';' */
4940 request_line++;
4941
4942 /* look if we have a jsessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4943 if (strncasecmp(request_line, t->be->appsession_name, t->be->appsession_name_len) != 0)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4944 return;
4945
4946 /* skip jsessionid= */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4947 request_line += t->be->appsession_name_len + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4948
4949 /* First try if we already have an appsession */
4950 asession_temp = &local_asession;
4951
4952 if ((asession_temp->sessid = pool_alloc_from(apools.sessid, apools.ses_msize)) == NULL) {
4953 Alert("Not enough memory process_cli():asession_temp->sessid:calloc().\n");
4954 send_log(t->be, LOG_ALERT, "Not enough Memory process_cli():asession_temp->sessid:calloc().\n");
4955 return;
4956 }
4957
4958 /* Copy the sessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4959 memcpy(asession_temp->sessid, request_line, t->be->appsession_len);
4960 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4961 asession_temp->serverid = NULL;
4962
4963 /* only do insert, if lookup fails */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4964 if (chtbl_lookup(&(t->be->htbl_proxy), (void *)&asession_temp)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4965 if ((asession_temp = pool_alloc(appsess)) == NULL) {
4966 /* free previously allocated memory */
4967 pool_free_to(apools.sessid, local_asession.sessid);
4968 Alert("Not enough memory process_cli():asession:calloc().\n");
4969 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4970 return;
4971 }
4972 asession_temp->sessid = local_asession.sessid;
4973 asession_temp->serverid = local_asession.serverid;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4974 chtbl_insert(&(t->be->htbl_proxy), (void *) asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4975 }
4976 else {
4977 /* free previously allocated memory */
4978 pool_free_to(apools.sessid, local_asession.sessid);
4979 }
4980
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]4981 tv_ms_add(&asession_temp->expire, &now, t->be->appsession_timeout);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4982 asession_temp->request_count++;
4983
4984#if defined(DEBUG_HASH)
4985 print_table(&(t->proxy->htbl_proxy));
4986#endif
4987 if (asession_temp->serverid == NULL) {
4988 Alert("Found Application Session without matching server.\n");
4989 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4990 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4991 while (srv) {
4992 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4993 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4994 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4995 txn->flags &= ~TX_CK_MASK;
4996 txn->flags |= TX_CK_VALID;
4997 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4998 t->srv = srv;
4999 break;
5000 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]5001 txn->flags &= ~TX_CK_MASK;
5002 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5003 }
5004 }
5005 srv = srv->next;
5006 }
5007 }
5008}
5009
5010
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5011/*
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5012 * In a GET or HEAD request, check if the requested URI matches the stats uri
5013 * for the current backend, and if an authorization has been passed and is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5014 *
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5015 * 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]5016 * 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]5017 * produce_content() can be called to start sending data.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5018 *
5019 * Returns 1 if the session's state changes, otherwise 0.
5020 */
5021int stats_check_uri_auth(struct session *t, struct proxy *backend)
5022{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5023 struct http_txn *txn = &t->txn;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5024 struct uri_auth *uri_auth = backend->uri_auth;
5025 struct user_auth *user;
5026 int authenticated, cur_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5027 char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5028
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5029 /* check URI size */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5030 if (uri_auth->uri_len > txn->req.sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5031 return 0;
5032
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5033 h = t->req->data + txn->req.sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5034
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5035 /* the URI is in h */
5036 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5037 return 0;
5038
5039 /* we are in front of a interceptable URI. Let's check
5040 * if there's an authentication and if it's valid.
5041 */
5042 user = uri_auth->users;
5043 if (!user) {
5044 /* no user auth required, it's OK */
5045 authenticated = 1;
5046 } else {
5047 authenticated = 0;
5048
5049 /* a user list is defined, we have to check.
5050 * skip 21 chars for "Authorization: Basic ".
5051 */
5052
5053 /* FIXME: this should move to an earlier place */
5054 cur_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5055 h = t->req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
5056 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
5057 int len = txn->hdr_idx.v[cur_idx].len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5058 if (len > 14 &&
5059 !strncasecmp("Authorization:", h, 14)) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5060 txn->auth_hdr.str = h;
5061 txn->auth_hdr.len = len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5062 break;
5063 }
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5064 h += len + txn->hdr_idx.v[cur_idx].cr + 1;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5065 }
5066
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5067 if (txn->auth_hdr.len < 21 ||
5068 memcmp(txn->auth_hdr.str + 14, " Basic ", 7))
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5069 user = NULL;
5070
5071 while (user) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5072 if ((txn->auth_hdr.len == user->user_len + 14 + 7)
5073 && !memcmp(txn->auth_hdr.str + 14 + 7,
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5074 user->user_pwd, user->user_len)) {
5075 authenticated = 1;
5076 break;
5077 }
5078 user = user->next;
5079 }
5080 }
5081
5082 if (!authenticated) {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]5083 struct chunk msg;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5084
5085 /* no need to go further */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]5086 msg.str = trash;
5087 msg.len = sprintf(trash, HTTP_401_fmt, uri_auth->auth_realm);
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]5088 txn->status = 401;
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]5089 client_retnclose(t, &msg);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5090 if (!(t->flags & SN_ERR_MASK))
5091 t->flags |= SN_ERR_PRXCOND;
5092 if (!(t->flags & SN_FINST_MASK))
5093 t->flags |= SN_FINST_R;
5094 return 1;
5095 }
5096
5097 /* The request is valid, the user is authenticate. Let's start sending
5098 * data.
5099 */
5100 t->cli_state = CL_STSHUTR;
5101 t->req->rlim = t->req->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreau42aae5c2007-04-29 17:43:56 +0200[diff] [blame]5102 t->logs.t_request = tv_ms_elapsed(&t->logs.tv_accept, &now);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5103 t->data_source = DATA_SRC_STATS;
5104 t->data_state = DATA_ST_INIT;
5105 produce_content(t);
5106 return 1;
5107}
5108
5109
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5110/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5111 * Print a debug line with a header
5112 */
5113void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
5114{
5115 int len, max;
5116 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
5117 dir, (unsigned short)t->cli_fd, (unsigned short)t->srv_fd);
5118 max = end - start;
5119 UBOUND(max, sizeof(trash) - len - 1);
5120 len += strlcpy2(trash + len, start, max + 1);
5121 trash[len++] = '\n';
5122 write(1, trash, len);
5123}
5124
5125
5126/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5127 * Local variables:
5128 * c-indent-level: 8
5129 * c-basic-offset: 8
5130 * End:
5131 */