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git01.mediatek.com / haproxy / a6a6a93e5609e7aaab31af58aaada2221ef78ec4 / . / src / proto_http.c
blob: 86dbc999f0a18b19abd8e08863075cc8ab95bc5e [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)
444 tv_delayfrom(&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
547 if (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 */
564 if (tv_remain2(&now, &t->expire) <= 0)
565 exit(100);
566#endif
567
568 return tv_remain2(&now, &t->expire); /* nothing more to do */
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
576 if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
577 int len;
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]578 len = sprintf(trash, "%08x:%s.closed[%04x:%04x]\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]579 s->uniq_id, s->be->id,
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]580 (unsigned short)s->cli_fd, (unsigned short)s->srv_fd);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]581 write(1, trash, len);
582 }
583
584 s->logs.t_close = tv_diff(&s->logs.tv_accept, &now);
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]585 if (s->req != NULL)
586 s->logs.bytes_in = s->req->total;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]587 if (s->rep != NULL)
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]588 s->logs.bytes_out = s->rep->total;
589
590 s->fe->bytes_in += s->logs.bytes_in;
591 s->fe->bytes_out += s->logs.bytes_out;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]592 if (s->be != s->fe) {
593 s->be->bytes_in += s->logs.bytes_in;
594 s->be->bytes_out += s->logs.bytes_out;
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]595 }
596 if (s->srv) {
597 s->srv->bytes_in += s->logs.bytes_in;
598 s->srv->bytes_out += s->logs.bytes_out;
599 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]600
601 /* let's do a final log if we need it */
Willy Tarreau1c47f852006-07-09 08:22:27 +0200[diff] [blame]602 if (s->logs.logwait &&
603 !(s->flags & SN_MONITOR) &&
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]604 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
605 if (s->fe->to_log & LW_REQ)
606 http_sess_log(s);
607 else
608 tcp_sess_log(s);
609 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]610
611 /* the task MUST not be in the run queue anymore */
612 task_delete(t);
613 session_free(s);
614 task_free(t);
615 return TIME_ETERNITY; /* rest in peace for eternity */
616}
617
618
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]619extern const char sess_term_cond[8];
620extern const char sess_fin_state[8];
621extern const char *monthname[12];
622const char sess_cookie[4] = "NIDV"; /* No cookie, Invalid cookie, cookie for a Down server, Valid cookie */
623const char sess_set_cookie[8] = "N1I3PD5R"; /* No set-cookie, unknown, Set-Cookie Inserted, unknown,
624 Set-cookie seen and left unchanged (passive), Set-cookie Deleted,
625 unknown, Set-cookie Rewritten */
626void **pool_requri = NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]627
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]628/*
629 * send a log for the session when we have enough info about it.
630 * Will not log if the frontend has no log defined.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]631 */
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]632static void http_sess_log(struct session *s)
633{
634 char pn[INET6_ADDRSTRLEN + strlen(":65535")];
635 struct proxy *fe = s->fe;
636 struct proxy *be = s->be;
637 struct proxy *prx_log;
638 struct http_txn *txn = &s->txn;
639 int tolog;
640 char *uri, *h;
641 char *svid;
642 struct tm *tm;
643 static char tmpline[MAX_SYSLOG_LEN];
644 int hdr;
645
646 if (fe->logfac1 < 0 && fe->logfac2 < 0)
647 return;
648 prx_log = fe;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]649
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]650 if (s->cli_addr.ss_family == AF_INET)
651 inet_ntop(AF_INET,
652 (const void *)&((struct sockaddr_in *)&s->cli_addr)->sin_addr,
653 pn, sizeof(pn));
654 else
655 inet_ntop(AF_INET6,
656 (const void *)&((struct sockaddr_in6 *)(&s->cli_addr))->sin6_addr,
657 pn, sizeof(pn));
658
659 tm = localtime((time_t *)&s->logs.tv_accept.tv_sec);
660
661
662 /* FIXME: let's limit ourselves to frontend logging for now. */
663 tolog = fe->to_log;
664
665 h = tmpline;
666 if (fe->to_log & LW_REQHDR &&
667 txn->req.cap &&
668 (h < tmpline + sizeof(tmpline) - 10)) {
669 *(h++) = ' ';
670 *(h++) = '{';
671 for (hdr = 0; hdr < fe->nb_req_cap; hdr++) {
672 if (hdr)
673 *(h++) = '|';
674 if (txn->req.cap[hdr] != NULL)
675 h = encode_string(h, tmpline + sizeof(tmpline) - 7,
676 '#', hdr_encode_map, txn->req.cap[hdr]);
677 }
678 *(h++) = '}';
679 }
680
681 if (fe->to_log & LW_RSPHDR &&
682 txn->rsp.cap &&
683 (h < tmpline + sizeof(tmpline) - 7)) {
684 *(h++) = ' ';
685 *(h++) = '{';
686 for (hdr = 0; hdr < fe->nb_rsp_cap; hdr++) {
687 if (hdr)
688 *(h++) = '|';
689 if (txn->rsp.cap[hdr] != NULL)
690 h = encode_string(h, tmpline + sizeof(tmpline) - 4,
691 '#', hdr_encode_map, txn->rsp.cap[hdr]);
692 }
693 *(h++) = '}';
694 }
695
696 if (h < tmpline + sizeof(tmpline) - 4) {
697 *(h++) = ' ';
698 *(h++) = '"';
699 uri = txn->uri ? txn->uri : "<BADREQ>";
700 h = encode_string(h, tmpline + sizeof(tmpline) - 1,
701 '#', url_encode_map, uri);
702 *(h++) = '"';
703 }
704 *h = '\0';
705
706 svid = (tolog & LW_SVID) ?
707 (s->data_source != DATA_SRC_STATS) ?
708 (s->srv != NULL) ? s->srv->id : "<NOSRV>" : "<STATS>" : "-";
709
710 send_log(prx_log, LOG_INFO,
711 "%s:%d [%02d/%s/%04d:%02d:%02d:%02d.%03d]"
712 " %s %s/%s %d/%d/%d/%d/%s%d %d %s%lld"
713 " %s %s %c%c%c%c %d/%d/%d/%d %d/%d%s\n",
714 pn,
715 (s->cli_addr.ss_family == AF_INET) ?
716 ntohs(((struct sockaddr_in *)&s->cli_addr)->sin_port) :
717 ntohs(((struct sockaddr_in6 *)&s->cli_addr)->sin6_port),
718 tm->tm_mday, monthname[tm->tm_mon], tm->tm_year+1900,
719 tm->tm_hour, tm->tm_min, tm->tm_sec, s->logs.tv_accept.tv_usec/1000,
720 fe->id, be->id, svid,
721 s->logs.t_request,
722 (s->logs.t_queue >= 0) ? s->logs.t_queue - s->logs.t_request : -1,
723 (s->logs.t_connect >= 0) ? s->logs.t_connect - s->logs.t_queue : -1,
724 (s->logs.t_data >= 0) ? s->logs.t_data - s->logs.t_connect : -1,
725 (tolog & LW_BYTES) ? "" : "+", s->logs.t_close,
726 txn->status,
727 (tolog & LW_BYTES) ? "" : "+", s->logs.bytes_in,
728 txn->cli_cookie ? txn->cli_cookie : "-",
729 txn->srv_cookie ? txn->srv_cookie : "-",
730 sess_term_cond[(s->flags & SN_ERR_MASK) >> SN_ERR_SHIFT],
731 sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_FINST_SHIFT],
732 (be->options & PR_O_COOK_ANY) ? sess_cookie[(txn->flags & TX_CK_MASK) >> TX_CK_SHIFT] : '-',
733 (be->options & PR_O_COOK_ANY) ? sess_set_cookie[(txn->flags & TX_SCK_MASK) >> TX_SCK_SHIFT] : '-',
734 actconn, fe->feconn, be->beconn, s->srv ? s->srv->cur_sess : 0,
735 s->logs.srv_queue_size, s->logs.prx_queue_size, tmpline);
736
737 s->logs.logwait = 0;
738}
739
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]740
741/*
742 * Capture headers from message starting at <som> according to header list
743 * <cap_hdr>, and fill the <idx> structure appropriately.
744 */
745void capture_headers(char *som, struct hdr_idx *idx,
746 char **cap, struct cap_hdr *cap_hdr)
747{
748 char *eol, *sol, *col, *sov;
749 int cur_idx;
750 struct cap_hdr *h;
751 int len;
752
753 sol = som + hdr_idx_first_pos(idx);
754 cur_idx = hdr_idx_first_idx(idx);
755
756 while (cur_idx) {
757 eol = sol + idx->v[cur_idx].len;
758
759 col = sol;
760 while (col < eol && *col != ':')
761 col++;
762
763 sov = col + 1;
764 while (sov < eol && http_is_lws[(unsigned char)*sov])
765 sov++;
766
767 for (h = cap_hdr; h; h = h->next) {
768 if ((h->namelen == col - sol) &&
769 (strncasecmp(sol, h->name, h->namelen) == 0)) {
770 if (cap[h->index] == NULL)
771 cap[h->index] =
772 pool_alloc_from(h->pool, h->len + 1);
773
774 if (cap[h->index] == NULL) {
775 Alert("HTTP capture : out of memory.\n");
776 continue;
777 }
778
779 len = eol - sov;
780 if (len > h->len)
781 len = h->len;
782
783 memcpy(cap[h->index], sov, len);
784 cap[h->index][len]=0;
785 }
786 }
787 sol = eol + idx->v[cur_idx].cr + 1;
788 cur_idx = idx->v[cur_idx].next;
789 }
790}
791
792
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]793/* either we find an LF at <ptr> or we jump to <bad>.
794 */
795#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
796
797/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
798 * otherwise to <http_msg_ood> with <state> set to <st>.
799 */
800#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
801 ptr++; \
802 if (likely(ptr < end)) \
803 goto good; \
804 else { \
805 state = (st); \
806 goto http_msg_ood; \
807 } \
808 } while (0)
809
810
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]811/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]812 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]813 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
814 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
815 * will give undefined results.
816 * Note that it is upon the caller's responsibility to ensure that ptr < end,
817 * and that msg->sol points to the beginning of the response.
818 * If a complete line is found (which implies that at least one CR or LF is
819 * found before <end>, the updated <ptr> is returned, otherwise NULL is
820 * returned indicating an incomplete line (which does not mean that parts have
821 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
822 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
823 * upon next call.
824 *
825 * This function was intentionnally designed to be called from
826 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
827 * within its state machine and use the same macros, hence the need for same
828 * labels and variable names.
829 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]830const char *http_parse_stsline(struct http_msg *msg, const char *msg_buf, int state,
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]831 const char *ptr, const char *end,
832 char **ret_ptr, int *ret_state)
833{
834 __label__
835 http_msg_rpver,
836 http_msg_rpver_sp,
837 http_msg_rpcode,
838 http_msg_rpcode_sp,
839 http_msg_rpreason,
840 http_msg_rpline_eol,
841 http_msg_ood, /* out of data */
842 http_msg_invalid;
843
844 switch (state) {
845 http_msg_rpver:
846 case HTTP_MSG_RPVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]847 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]848 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
849
850 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]851 msg->sl.st.v_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]852 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
853 }
854 goto http_msg_invalid;
855
856 http_msg_rpver_sp:
857 case HTTP_MSG_RPVER_SP:
858 if (likely(!HTTP_IS_LWS(*ptr))) {
859 msg->sl.st.c = ptr - msg_buf;
860 goto http_msg_rpcode;
861 }
862 if (likely(HTTP_IS_SPHT(*ptr)))
863 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
864 /* so it's a CR/LF, this is invalid */
865 goto http_msg_invalid;
866
867 http_msg_rpcode:
868 case HTTP_MSG_RPCODE:
869 if (likely(!HTTP_IS_LWS(*ptr)))
870 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
871
872 if (likely(HTTP_IS_SPHT(*ptr))) {
873 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
874 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
875 }
876
877 /* so it's a CR/LF, so there is no reason phrase */
878 msg->sl.st.c_l = (ptr - msg_buf) - msg->sl.st.c;
879 http_msg_rsp_reason:
880 /* FIXME: should we support HTTP responses without any reason phrase ? */
881 msg->sl.st.r = ptr - msg_buf;
882 msg->sl.st.r_l = 0;
883 goto http_msg_rpline_eol;
884
885 http_msg_rpcode_sp:
886 case HTTP_MSG_RPCODE_SP:
887 if (likely(!HTTP_IS_LWS(*ptr))) {
888 msg->sl.st.r = ptr - msg_buf;
889 goto http_msg_rpreason;
890 }
891 if (likely(HTTP_IS_SPHT(*ptr)))
892 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
893 /* so it's a CR/LF, so there is no reason phrase */
894 goto http_msg_rsp_reason;
895
896 http_msg_rpreason:
897 case HTTP_MSG_RPREASON:
898 if (likely(!HTTP_IS_CRLF(*ptr)))
899 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
900 msg->sl.st.r_l = (ptr - msg_buf) - msg->sl.st.r;
901 http_msg_rpline_eol:
902 /* We have seen the end of line. Note that we do not
903 * necessarily have the \n yet, but at least we know that we
904 * have EITHER \r OR \n, otherwise the response would not be
905 * complete. We can then record the response length and return
906 * to the caller which will be able to register it.
907 */
908 msg->sl.st.l = ptr - msg->sol;
909 return ptr;
910
911#ifdef DEBUG_FULL
912 default:
913 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
914 exit(1);
915#endif
916 }
917
918 http_msg_ood:
919 /* out of data */
920 if (ret_state)
921 *ret_state = state;
922 if (ret_ptr)
923 *ret_ptr = (char *)ptr;
924 return NULL;
925
926 http_msg_invalid:
927 /* invalid message */
928 if (ret_state)
929 *ret_state = HTTP_MSG_ERROR;
930 return NULL;
931}
932
933
934/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]935 * This function parses a request line between <ptr> and <end>, starting with
936 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
937 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
938 * will give undefined results.
939 * Note that it is upon the caller's responsibility to ensure that ptr < end,
940 * and that msg->sol points to the beginning of the request.
941 * If a complete line is found (which implies that at least one CR or LF is
942 * found before <end>, the updated <ptr> is returned, otherwise NULL is
943 * returned indicating an incomplete line (which does not mean that parts have
944 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
945 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
946 * upon next call.
947 *
948 * This function was intentionnally designed to be called from
949 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
950 * within its state machine and use the same macros, hence the need for same
951 * labels and variable names.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]952 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]953const char *http_parse_reqline(struct http_msg *msg, const char *msg_buf, int state,
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]954 const char *ptr, const char *end,
955 char **ret_ptr, int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]956{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]957 __label__
958 http_msg_rqmeth,
959 http_msg_rqmeth_sp,
960 http_msg_rquri,
961 http_msg_rquri_sp,
962 http_msg_rqver,
963 http_msg_rqline_eol,
964 http_msg_ood, /* out of data */
965 http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]966
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]967 switch (state) {
968 http_msg_rqmeth:
969 case HTTP_MSG_RQMETH:
970 if (likely(HTTP_IS_TOKEN(*ptr)))
971 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]972
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]973 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]974 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]975 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
976 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]977
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]978 if (likely(HTTP_IS_CRLF(*ptr))) {
979 /* HTTP 0.9 request */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]980 msg->sl.rq.m_l = (ptr - msg_buf) - msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]981 http_msg_req09_uri:
982 msg->sl.rq.u = ptr - msg_buf;
983 http_msg_req09_uri_e:
984 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
985 http_msg_req09_ver:
986 msg->sl.rq.v = ptr - msg_buf;
987 msg->sl.rq.v_l = 0;
988 goto http_msg_rqline_eol;
989 }
990 goto http_msg_invalid;
991
992 http_msg_rqmeth_sp:
993 case HTTP_MSG_RQMETH_SP:
994 if (likely(!HTTP_IS_LWS(*ptr))) {
995 msg->sl.rq.u = ptr - msg_buf;
996 goto http_msg_rquri;
997 }
998 if (likely(HTTP_IS_SPHT(*ptr)))
999 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1000 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1001 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1002
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1003 http_msg_rquri:
1004 case HTTP_MSG_RQURI:
1005 if (likely(!HTTP_IS_LWS(*ptr)))
1006 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1007
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1008 if (likely(HTTP_IS_SPHT(*ptr))) {
1009 msg->sl.rq.u_l = (ptr - msg_buf) - msg->sl.rq.u;
1010 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1011 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1012
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1013 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1014 goto http_msg_req09_uri_e;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1015
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1016 http_msg_rquri_sp:
1017 case HTTP_MSG_RQURI_SP:
1018 if (likely(!HTTP_IS_LWS(*ptr))) {
1019 msg->sl.rq.v = ptr - msg_buf;
1020 goto http_msg_rqver;
1021 }
1022 if (likely(HTTP_IS_SPHT(*ptr)))
1023 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1024 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1025 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1026
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1027 http_msg_rqver:
1028 case HTTP_MSG_RQVER:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1029 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1030 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1031
1032 if (likely(HTTP_IS_CRLF(*ptr))) {
1033 msg->sl.rq.v_l = (ptr - msg_buf) - msg->sl.rq.v;
1034 http_msg_rqline_eol:
1035 /* We have seen the end of line. Note that we do not
1036 * necessarily have the \n yet, but at least we know that we
1037 * have EITHER \r OR \n, otherwise the request would not be
1038 * complete. We can then record the request length and return
1039 * to the caller which will be able to register it.
1040 */
1041 msg->sl.rq.l = ptr - msg->sol;
1042 return ptr;
1043 }
1044
1045 /* neither an HTTP_VER token nor a CRLF */
1046 goto http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1047
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1048#ifdef DEBUG_FULL
1049 default:
1050 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1051 exit(1);
1052#endif
1053 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1054
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1055 http_msg_ood:
1056 /* out of data */
1057 if (ret_state)
1058 *ret_state = state;
1059 if (ret_ptr)
1060 *ret_ptr = (char *)ptr;
1061 return NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1062
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1063 http_msg_invalid:
1064 /* invalid message */
1065 if (ret_state)
1066 *ret_state = HTTP_MSG_ERROR;
1067 return NULL;
1068}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1069
1070
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1071/*
1072 * This function parses an HTTP message, either a request or a response,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1073 * depending on the initial msg->msg_state. It can be preempted everywhere
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1074 * when data are missing and recalled at the exact same location with no
1075 * information loss. The header index is re-initialized when switching from
1076 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH.
1077 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1078void http_msg_analyzer(struct buffer *buf, struct http_msg *msg, struct hdr_idx *idx)
1079{
1080 __label__
1081 http_msg_rqbefore,
1082 http_msg_rqbefore_cr,
1083 http_msg_rqmeth,
1084 http_msg_rqline_end,
1085 http_msg_hdr_first,
1086 http_msg_hdr_name,
1087 http_msg_hdr_l1_sp,
1088 http_msg_hdr_l1_lf,
1089 http_msg_hdr_l1_lws,
1090 http_msg_hdr_val,
1091 http_msg_hdr_l2_lf,
1092 http_msg_hdr_l2_lws,
1093 http_msg_complete_header,
1094 http_msg_last_lf,
1095 http_msg_ood, /* out of data */
1096 http_msg_invalid;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1097
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1098 int state; /* updated only when leaving the FSM */
1099 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1100
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1101 state = msg->msg_state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1102 ptr = buf->lr;
1103 end = buf->r;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1104
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1105 if (unlikely(ptr >= end))
1106 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1107
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1108 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1109 /*
1110 * First, states that are specific to the response only.
1111 * We check them first so that request and headers are
1112 * closer to each other (accessed more often).
1113 */
1114 http_msg_rpbefore:
1115 case HTTP_MSG_RPBEFORE:
1116 if (likely(HTTP_IS_TOKEN(*ptr))) {
1117 if (likely(ptr == buf->data)) {
1118 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1119 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1120 } else {
1121#if PARSE_PRESERVE_EMPTY_LINES
1122 /* only skip empty leading lines, don't remove them */
1123 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1124 msg->som = ptr - buf->data;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1125#else
1126 /* Remove empty leading lines, as recommended by
1127 * RFC2616. This takes a lot of time because we
1128 * must move all the buffer backwards, but this
1129 * is rarely needed. The method above will be
1130 * cleaner when we'll be able to start sending
1131 * the request from any place in the buffer.
1132 */
1133 buf->lr = ptr;
1134 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1135 msg->som = 0;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1136 msg->sol = buf->data;
1137 ptr = buf->data;
1138 end = buf->r;
1139#endif
1140 }
1141 hdr_idx_init(idx);
1142 state = HTTP_MSG_RPVER;
1143 goto http_msg_rpver;
1144 }
1145
1146 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1147 goto http_msg_invalid;
1148
1149 if (unlikely(*ptr == '\n'))
1150 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1151 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1152 /* stop here */
1153
1154 http_msg_rpbefore_cr:
1155 case HTTP_MSG_RPBEFORE_CR:
1156 EXPECT_LF_HERE(ptr, http_msg_invalid);
1157 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1158 /* stop here */
1159
1160 http_msg_rpver:
1161 case HTTP_MSG_RPVER:
1162 case HTTP_MSG_RPVER_SP:
1163 case HTTP_MSG_RPCODE:
1164 case HTTP_MSG_RPCODE_SP:
1165 case HTTP_MSG_RPREASON:
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1166 ptr = (char *)http_parse_stsline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1167 &buf->lr, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1168 if (unlikely(!ptr))
1169 return;
1170
1171 /* we have a full response and we know that we have either a CR
1172 * or an LF at <ptr>.
1173 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1174 //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]1175 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1176
1177 msg->sol = ptr;
1178 if (likely(*ptr == '\r'))
1179 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1180 goto http_msg_rpline_end;
1181
1182 http_msg_rpline_end:
1183 case HTTP_MSG_RPLINE_END:
1184 /* msg->sol must point to the first of CR or LF. */
1185 EXPECT_LF_HERE(ptr, http_msg_invalid);
1186 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1187 /* stop here */
1188
1189 /*
1190 * Second, states that are specific to the request only
1191 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1192 http_msg_rqbefore:
1193 case HTTP_MSG_RQBEFORE:
1194 if (likely(HTTP_IS_TOKEN(*ptr))) {
1195 if (likely(ptr == buf->data)) {
1196 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1197 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1198 } else {
1199#if PARSE_PRESERVE_EMPTY_LINES
1200 /* only skip empty leading lines, don't remove them */
1201 msg->sol = ptr;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1202 msg->som = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1203#else
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1204 /* Remove empty leading lines, as recommended by
1205 * RFC2616. This takes a lot of time because we
1206 * must move all the buffer backwards, but this
1207 * is rarely needed. The method above will be
1208 * cleaner when we'll be able to start sending
1209 * the request from any place in the buffer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1210 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1211 buf->lr = ptr;
1212 buffer_replace2(buf, buf->data, buf->lr, NULL, 0);
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1213 msg->som = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1214 msg->sol = buf->data;
1215 ptr = buf->data;
1216 end = buf->r;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1217#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1218 }
Willy Tarreauf0d058e2007-01-25 12:03:42 +0100[diff] [blame]1219 /* we will need this when keep-alive will be supported
1220 hdr_idx_init(idx);
1221 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1222 state = HTTP_MSG_RQMETH;
1223 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1224 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1225
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1226 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1227 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1228
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1229 if (unlikely(*ptr == '\n'))
1230 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1231 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1232 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1233
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1234 http_msg_rqbefore_cr:
1235 case HTTP_MSG_RQBEFORE_CR:
1236 EXPECT_LF_HERE(ptr, http_msg_invalid);
1237 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1238 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1239
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1240 http_msg_rqmeth:
1241 case HTTP_MSG_RQMETH:
1242 case HTTP_MSG_RQMETH_SP:
1243 case HTTP_MSG_RQURI:
1244 case HTTP_MSG_RQURI_SP:
1245 case HTTP_MSG_RQVER:
1246 ptr = (char *)http_parse_reqline(msg, buf->data, state, ptr, end,
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1247 &buf->lr, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1248 if (unlikely(!ptr))
1249 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1250
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1251 /* we have a full request and we know that we have either a CR
1252 * or an LF at <ptr>.
1253 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1254 //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]1255 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1256
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1257 msg->sol = ptr;
1258 if (likely(*ptr == '\r'))
1259 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1260 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1261
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1262 http_msg_rqline_end:
1263 case HTTP_MSG_RQLINE_END:
1264 /* check for HTTP/0.9 request : no version information available.
1265 * msg->sol must point to the first of CR or LF.
1266 */
1267 if (unlikely(msg->sl.rq.v_l == 0))
1268 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1269
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1270 EXPECT_LF_HERE(ptr, http_msg_invalid);
1271 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1272 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1273
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1274 /*
1275 * Common states below
1276 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1277 http_msg_hdr_first:
1278 case HTTP_MSG_HDR_FIRST:
1279 msg->sol = ptr;
1280 if (likely(!HTTP_IS_CRLF(*ptr))) {
1281 goto http_msg_hdr_name;
1282 }
1283
1284 if (likely(*ptr == '\r'))
1285 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1286 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1287
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1288 http_msg_hdr_name:
1289 case HTTP_MSG_HDR_NAME:
1290 /* assumes msg->sol points to the first char */
1291 if (likely(HTTP_IS_TOKEN(*ptr)))
1292 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1293
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1294 if (likely(*ptr == ':')) {
1295 msg->col = ptr - buf->data;
1296 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
1297 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1298
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1299 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1300
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1301 http_msg_hdr_l1_sp:
1302 case HTTP_MSG_HDR_L1_SP:
1303 /* assumes msg->sol points to the first char and msg->col to the colon */
1304 if (likely(HTTP_IS_SPHT(*ptr)))
1305 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]1306
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1307 /* header value can be basically anything except CR/LF */
1308 msg->sov = ptr - buf->data;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1309
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1310 if (likely(!HTTP_IS_CRLF(*ptr))) {
1311 goto http_msg_hdr_val;
1312 }
1313
1314 if (likely(*ptr == '\r'))
1315 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1316 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1317
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1318 http_msg_hdr_l1_lf:
1319 case HTTP_MSG_HDR_L1_LF:
1320 EXPECT_LF_HERE(ptr, http_msg_invalid);
1321 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]1322
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1323 http_msg_hdr_l1_lws:
1324 case HTTP_MSG_HDR_L1_LWS:
1325 if (likely(HTTP_IS_SPHT(*ptr))) {
1326 /* replace HT,CR,LF with spaces */
1327 for (; buf->data+msg->sov < ptr; msg->sov++)
1328 buf->data[msg->sov] = ' ';
1329 goto http_msg_hdr_l1_sp;
1330 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1331 /* we had a header consisting only in spaces ! */
1332 msg->eol = buf->data + msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1333 goto http_msg_complete_header;
1334
1335 http_msg_hdr_val:
1336 case HTTP_MSG_HDR_VAL:
1337 /* assumes msg->sol points to the first char, msg->col to the
1338 * colon, and msg->sov points to the first character of the
1339 * value.
1340 */
1341 if (likely(!HTTP_IS_CRLF(*ptr)))
1342 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1343
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1344 msg->eol = ptr;
1345 /* Note: we could also copy eol into ->eoh so that we have the
1346 * real header end in case it ends with lots of LWS, but is this
1347 * really needed ?
1348 */
1349 if (likely(*ptr == '\r'))
1350 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1351 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1352
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1353 http_msg_hdr_l2_lf:
1354 case HTTP_MSG_HDR_L2_LF:
1355 EXPECT_LF_HERE(ptr, http_msg_invalid);
1356 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]1357
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1358 http_msg_hdr_l2_lws:
1359 case HTTP_MSG_HDR_L2_LWS:
1360 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1361 /* LWS: replace HT,CR,LF with spaces */
1362 for (; msg->eol < ptr; msg->eol++)
1363 *msg->eol = ' ';
1364 goto http_msg_hdr_val;
1365 }
1366 http_msg_complete_header:
1367 /*
1368 * It was a new header, so the last one is finished.
1369 * Assumes msg->sol points to the first char, msg->col to the
1370 * colon, msg->sov points to the first character of the value
1371 * and msg->eol to the first CR or LF so we know how the line
1372 * ends. We insert last header into the index.
1373 */
1374 /*
1375 fprintf(stderr,"registering %-2d bytes : ", msg->eol - msg->sol);
1376 write(2, msg->sol, msg->eol-msg->sol);
1377 fprintf(stderr,"\n");
1378 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1379
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1380 if (unlikely(hdr_idx_add(msg->eol - msg->sol, *msg->eol == '\r',
1381 idx, idx->tail) < 0))
1382 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1383
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1384 msg->sol = ptr;
1385 if (likely(!HTTP_IS_CRLF(*ptr))) {
1386 goto http_msg_hdr_name;
1387 }
1388
1389 if (likely(*ptr == '\r'))
1390 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1391 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1392
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1393 http_msg_last_lf:
1394 case HTTP_MSG_LAST_LF:
1395 /* Assumes msg->sol points to the first of either CR or LF */
1396 EXPECT_LF_HERE(ptr, http_msg_invalid);
1397 ptr++;
1398 buf->lr = ptr;
1399 msg->eoh = msg->sol - buf->data;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1400 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1401 return;
1402#ifdef DEBUG_FULL
1403 default:
1404 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1405 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1406#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1407 }
1408 http_msg_ood:
1409 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1410 msg->msg_state = state;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1411 buf->lr = ptr;
1412 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1413
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1414 http_msg_invalid:
1415 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1416 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1417 return;
1418}
1419
1420/*
1421 * manages the client FSM and its socket. BTW, it also tries to handle the
1422 * cookie. It returns 1 if a state has changed (and a resync may be needed),
1423 * 0 else.
1424 */
1425int process_cli(struct session *t)
1426{
1427 int s = t->srv_state;
1428 int c = t->cli_state;
1429 struct buffer *req = t->req;
1430 struct buffer *rep = t->rep;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1431
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1432 DPRINTF(stderr,"process_cli: c=%s s=%s set(r,w)=%d,%d exp(r,w)=%d.%d,%d.%d\n",
1433 cli_stnames[c], srv_stnames[s],
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1434 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]1435 req->rex.tv_sec, req->rex.tv_usec,
1436 rep->wex.tv_sec, rep->wex.tv_usec);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1437
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1438 if (c == CL_STHEADERS) {
1439 /*
1440 * Now parse the partial (or complete) lines.
1441 * We will check the request syntax, and also join multi-line
1442 * headers. An index of all the lines will be elaborated while
1443 * parsing.
1444 *
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1445 * For the parsing, we use a 28 states FSM.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1446 *
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1447 * Here is the information we currently have :
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1448 * req->data + req->som = beginning of request
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1449 * req->data + req->eoh = end of processed headers / start of current one
1450 * req->data + req->eol = end of current header or line (LF or CRLF)
1451 * req->lr = first non-visited byte
1452 * req->r = end of data
1453 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1454
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1455 int cur_idx;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1456 struct http_txn *txn = &t->txn;
1457 struct http_msg *msg = &txn->req;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1458 struct proxy *cur_proxy;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1459
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1460 if (likely(req->lr < req->r))
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1461 http_msg_analyzer(req, msg, &txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1462
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1463 /* 1: we might have to print this header in debug mode */
1464 if (unlikely((global.mode & MODE_DEBUG) &&
1465 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1466 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1467 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1468
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1469 sol = req->data + msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1470 eol = sol + msg->sl.rq.l;
1471 debug_hdr("clireq", t, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1472
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1473 sol += hdr_idx_first_pos(&txn->hdr_idx);
1474 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1475
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1476 while (cur_idx) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1477 eol = sol + txn->hdr_idx.v[cur_idx].len;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1478 debug_hdr("clihdr", t, sol, eol);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1479 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
1480 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1481 }
1482 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1483
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1484
1485 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1486 * Now we quickly check if we have found a full valid request.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1487 * If not so, we check the FD and buffer states before leaving.
1488 * A full request is indicated by the fact that we have seen
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1489 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
1490 * requests are checked first.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1491 *
1492 */
1493
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1494 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1495 /*
1496 * First, let's catch bad requests.
1497 */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1498 if (unlikely(msg->msg_state == HTTP_MSG_ERROR))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1499 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1500
1501 /* 1: Since we are in header mode, if there's no space
1502 * left for headers, we won't be able to free more
1503 * later, so the session will never terminate. We
1504 * must terminate it now.
1505 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1506 if (unlikely(req->l >= req->rlim - req->data)) {
1507 /* FIXME: check if URI is set and return Status
1508 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1509 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1510 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1511 }
1512
1513 /* 2: have we encountered a read error or a close ? */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1514 else if (unlikely(req->flags & (BF_READ_ERROR | BF_READ_NULL))) {
1515 /* read error, or last read : give up. */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1516 tv_eternity(&req->rex);
1517 fd_delete(t->cli_fd);
1518 t->cli_state = CL_STCLOSE;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]1519 t->fe->failed_req++;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1520 if (!(t->flags & SN_ERR_MASK))
1521 t->flags |= SN_ERR_CLICL;
1522 if (!(t->flags & SN_FINST_MASK))
1523 t->flags |= SN_FINST_R;
1524 return 1;
1525 }
1526
1527 /* 3: has the read timeout expired ? */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1528 else if (unlikely(tv_cmp2_ms(&req->rex, &now) <= 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1529 /* read timeout : give up with an error message. */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1530 txn->status = 408;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1531 client_retnclose(t, error_message(t, HTTP_ERR_408));
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]1532 t->fe->failed_req++;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1533 if (!(t->flags & SN_ERR_MASK))
1534 t->flags |= SN_ERR_CLITO;
1535 if (!(t->flags & SN_FINST_MASK))
1536 t->flags |= SN_FINST_R;
1537 return 1;
1538 }
1539
1540 /* 4: do we need to re-enable the read socket ? */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]1541 else if (unlikely(EV_FD_COND_S(t->cli_fd, DIR_RD))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1542 /* fd in DIR_RD was disabled, perhaps because of a previous buffer
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1543 * full. We cannot loop here since stream_sock_read will disable it only if
1544 * req->l == rlim-data
1545 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1546 if (t->fe->clitimeout)
1547 tv_delayfrom(&req->rex, &now, t->fe->clitimeout);
1548 else
1549 tv_eternity(&req->rex);
1550 }
1551 return t->cli_state != CL_STHEADERS;
1552 }
1553
1554
1555 /****************************************************************
1556 * More interesting part now : we know that we have a complete *
1557 * request which at least looks like HTTP. We have an indicator *
1558 * of each header's length, so we can parse them quickly. *
1559 ****************************************************************/
1560
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1561 /*
1562 * 1: identify the method
1563 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1564 txn->meth = find_http_meth(&req->data[msg->som], msg->sl.rq.m_l);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1565
1566 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1567 * 2: check if the URI matches the monitor_uri.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1568 * We have to do this for every request which gets in, because
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1569 * the monitor-uri is defined by the frontend.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1570 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1571 if (unlikely((t->fe->monitor_uri_len != 0) &&
1572 (t->fe->monitor_uri_len == msg->sl.rq.u_l) &&
1573 !memcmp(&req->data[msg->sl.rq.u],
1574 t->fe->monitor_uri,
1575 t->fe->monitor_uri_len))) {
1576 /*
1577 * We have found the monitor URI
1578 */
1579 t->flags |= SN_MONITOR;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1580 txn->status = 200;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1581 client_retnclose(t, &http_200_chunk);
1582 goto return_prx_cond;
1583 }
1584
1585 /*
1586 * 3: Maybe we have to copy the original REQURI for the logs ?
1587 * Note: we cannot log anymore if the request has been
1588 * classified as invalid.
1589 */
1590 if (unlikely(t->logs.logwait & LW_REQ)) {
1591 /* we have a complete HTTP request that we must log */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1592 if ((txn->uri = pool_alloc(requri)) != NULL) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1593 int urilen = msg->sl.rq.l;
1594
1595 if (urilen >= REQURI_LEN)
1596 urilen = REQURI_LEN - 1;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1597 memcpy(txn->uri, &req->data[msg->som], urilen);
1598 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1599
1600 if (!(t->logs.logwait &= ~LW_REQ))
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1601 http_sess_log(t);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1602 } else {
1603 Alert("HTTP logging : out of memory.\n");
1604 }
1605 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1606
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1607
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1608 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
1609 if (unlikely(msg->sl.rq.v_l == 0)) {
1610 int delta;
1611 char *cur_end;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1612 msg->sol = req->data + msg->som;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1613 cur_end = msg->sol + msg->sl.rq.l;
1614 delta = 0;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1615
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1616 if (msg->sl.rq.u_l == 0) {
1617 /* if no URI was set, add "/" */
1618 delta = buffer_replace2(req, cur_end, cur_end, " /", 2);
1619 cur_end += delta;
1620 msg->eoh += delta;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1621 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1622 /* add HTTP version */
1623 delta = buffer_replace2(req, cur_end, cur_end, " HTTP/1.0\r\n", 11);
1624 msg->eoh += delta;
1625 cur_end += delta;
1626 cur_end = (char *)http_parse_reqline(msg, req->data,
1627 HTTP_MSG_RQMETH,
1628 msg->sol, cur_end + 1,
1629 NULL, NULL);
1630 if (unlikely(!cur_end))
1631 goto return_bad_req;
1632
1633 /* we have a full HTTP/1.0 request now and we know that
1634 * we have either a CR or an LF at <ptr>.
1635 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1636 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1637 }
1638
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1639
1640 /* 5: we may need to capture headers */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1641 if (unlikely((t->logs.logwait & LW_REQHDR) && t->fe->req_cap))
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1642 capture_headers(req->data + msg->som, &txn->hdr_idx,
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1643 txn->req.cap, t->fe->req_cap);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1644
1645 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1646 * 6: we will have to evaluate the filters.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1647 * As opposed to version 1.2, now they will be evaluated in the
1648 * filters order and not in the header order. This means that
1649 * each filter has to be validated among all headers.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1650 *
1651 * We can now check whether we want to switch to another
1652 * backend, in which case we will re-check the backend's
1653 * filters and various options. In order to support 3-level
1654 * switching, here's how we should proceed :
1655 *
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1656 * a) run be.
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1657 * if (switch) then switch ->be to the new backend.
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1658 * b) run be if (be != fe).
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1659 * There cannot be any switch from there, so ->be cannot be
1660 * changed anymore.
1661 *
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1662 * => filters always apply to ->be, then ->be may change.
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1663 *
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1664 * The response path will be able to apply either ->be, or
1665 * ->be then ->fe filters in order to match the reverse of
1666 * the forward sequence.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1667 */
1668
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1669 do {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1670 struct proxy *rule_set = t->be;
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1671 cur_proxy = t->be;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1672
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1673 /* try headers filters */
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1674 if (rule_set->req_exp != NULL) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1675 if (apply_filters_to_request(t, req, rule_set->req_exp) < 0)
1676 goto return_bad_req;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1677 }
1678
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1679 if (!(t->flags & SN_BE_ASSIGNED) && (t->be != cur_proxy)) {
1680 /* to ensure correct connection accounting on
1681 * the backend, we count the connection for the
1682 * one managing the queue.
1683 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1684 t->be->beconn++;
1685 if (t->be->beconn > t->be->beconn_max)
1686 t->be->beconn_max = t->be->beconn;
1687 t->be->cum_beconn++;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1688 t->flags |= SN_BE_ASSIGNED;
1689 }
1690
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1691 /* has the request been denied ? */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]1692 if (txn->flags & TX_CLDENY) {
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1693 /* no need to go further */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1694 txn->status = 403;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1695 /* let's log the request time */
1696 t->logs.t_request = tv_diff(&t->logs.tv_accept, &now);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1697 client_retnclose(t, error_message(t, HTTP_ERR_403));
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1698 goto return_prx_cond;
1699 }
1700
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1701 /* We might have to check for "Connection:" */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1702 if (((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1703 !(t->flags & SN_CONN_CLOSED)) {
1704 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1705 int cur_idx, old_idx, delta, val;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1706 struct hdr_idx_elem *cur_hdr;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1707
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1708 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1709 old_idx = 0;
1710
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1711 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
1712 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1713 cur_ptr = cur_next;
1714 cur_end = cur_ptr + cur_hdr->len;
1715 cur_next = cur_end + cur_hdr->cr + 1;
1716
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1717 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
1718 if (val) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1719 /* 3 possibilities :
1720 * - we have already set Connection: close,
1721 * so we remove this line.
1722 * - we have not yet set Connection: close,
1723 * but this line indicates close. We leave
1724 * it untouched and set the flag.
1725 * - we have not yet set Connection: close,
1726 * and this line indicates non-close. We
1727 * replace it.
1728 */
1729 if (t->flags & SN_CONN_CLOSED) {
1730 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1731 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1732 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1733 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
1734 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1735 cur_hdr->len = 0;
1736 } else {
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1737 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
1738 delta = buffer_replace2(req, cur_ptr + val, cur_end,
1739 "close", 5);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1740 cur_next += delta;
1741 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1742 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1743 }
1744 t->flags |= SN_CONN_CLOSED;
1745 }
1746 }
1747 old_idx = cur_idx;
1748 }
Willy Tarreauf2f0ee82007-03-30 12:02:43 +0200[diff] [blame]1749 }
1750 /* add request headers from the rule sets in the same order */
1751 for (cur_idx = 0; cur_idx < rule_set->nb_reqadd; cur_idx++) {
1752 if (unlikely(http_header_add_tail(req,
1753 &txn->req,
1754 &txn->hdr_idx,
1755 rule_set->req_add[cur_idx])) < 0)
1756 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1757 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]1758
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1759 /* check if stats URI was requested, and if an auth is needed */
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]1760 if (rule_set->uri_auth != NULL &&
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1761 (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)) {
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]1762 /* we have to check the URI and auth for this request */
1763 if (stats_check_uri_auth(t, rule_set))
1764 return 1;
1765 }
1766
Willy Tarreau5fdfb912007-01-01 23:11:07 +0100[diff] [blame]1767 if (!(t->flags & SN_BE_ASSIGNED) && cur_proxy->defbe.be) {
1768 /* No backend was set, but there was a default
1769 * backend set in the frontend, so we use it and
1770 * loop again.
1771 */
1772 t->be = cur_proxy->defbe.be;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1773 t->be->beconn++;
1774 if (t->be->beconn > t->be->beconn_max)
1775 t->be->beconn_max = t->be->beconn;
1776 t->be->cum_beconn++;
Willy Tarreau5fdfb912007-01-01 23:11:07 +0100[diff] [blame]1777 t->flags |= SN_BE_ASSIGNED;
1778 }
1779 } while (t->be != cur_proxy); /* we loop only if t->be has changed */
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1780
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1781
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1782 if (!(t->flags & SN_BE_ASSIGNED)) {
1783 /* To ensure correct connection accounting on
1784 * the backend, we count the connection for the
1785 * one managing the queue.
1786 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1787 t->be->beconn++;
1788 if (t->be->beconn > t->be->beconn_max)
1789 t->be->beconn_max = t->be->beconn;
1790 t->be->cum_beconn++;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]1791 t->flags |= SN_BE_ASSIGNED;
1792 }
1793
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1794 /*
1795 * Right now, we know that we have processed the entire headers
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1796 * and that unwanted requests have been filtered out. We can do
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1797 * whatever we want with the remaining request. Also, now we
Willy Tarreau830ff452006-12-17 19:31:23 +0100[diff] [blame]1798 * may have separate values for ->fe, ->be.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1799 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1800
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1801
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1802
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1803
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1804 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1805 * 7: the appsession cookie was looked up very early in 1.2,
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1806 * so let's do the same now.
1807 */
1808
1809 /* It needs to look into the URI */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1810 if (t->be->appsession_name) {
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1811 get_srv_from_appsession(t, &req->data[msg->som], msg->sl.rq.l);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1812 }
1813
1814
1815 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1816 * 8: Now we can work with the cookies.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1817 * Note that doing so might move headers in the request, but
1818 * the fields will stay coherent and the URI will not move.
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1819 * This should only be performed in the backend.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1820 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]1821 if (!(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1822 manage_client_side_cookies(t, req);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1823
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1824
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1825 /*
Willy Tarreaubb046ac2007-03-03 19:17:03 +0100[diff] [blame]1826 * 9: add X-Forwarded-For if either the frontend or the backend
1827 * asks for it.
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1828 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1829 if ((t->fe->options | t->be->options) & PR_O_FWDFOR) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1830 if (t->cli_addr.ss_family == AF_INET) {
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]1831 /* Add an X-Forwarded-For header unless the source IP is
1832 * in the 'except' network range.
1833 */
1834 if ((!t->fe->except_mask.s_addr ||
1835 (((struct sockaddr_in *)&t->cli_addr)->sin_addr.s_addr & t->fe->except_mask.s_addr)
1836 != t->fe->except_net.s_addr) &&
1837 (!t->be->except_mask.s_addr ||
1838 (((struct sockaddr_in *)&t->cli_addr)->sin_addr.s_addr & t->be->except_mask.s_addr)
1839 != t->be->except_net.s_addr)) {
1840 int len;
1841 unsigned char *pn;
1842 pn = (unsigned char *)&((struct sockaddr_in *)&t->cli_addr)->sin_addr;
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]1843
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]1844 len = sprintf(trash, "X-Forwarded-For: %d.%d.%d.%d",
1845 pn[0], pn[1], pn[2], pn[3]);
1846
1847 if (unlikely(http_header_add_tail2(req, &txn->req,
1848 &txn->hdr_idx, trash, len)) < 0)
1849 goto return_bad_req;
1850 }
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1851 }
1852 else if (t->cli_addr.ss_family == AF_INET6) {
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]1853 /* FIXME: for the sake of completeness, we should also support
1854 * 'except' here, although it is mostly useless in this case.
1855 */
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1856 int len;
1857 char pn[INET6_ADDRSTRLEN];
1858 inet_ntop(AF_INET6,
1859 (const void *)&((struct sockaddr_in6 *)(&t->cli_addr))->sin6_addr,
1860 pn, sizeof(pn));
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]1861 len = sprintf(trash, "X-Forwarded-For: %s", pn);
1862 if (unlikely(http_header_add_tail2(req, &txn->req,
1863 &txn->hdr_idx, trash, len)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1864 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1865 }
1866 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1867
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1868 /*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1869 * 10: add "Connection: close" if needed and not yet set.
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]1870 * 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]1871 */
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]1872 if (!(t->flags & SN_CONN_CLOSED) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1873 ((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE)) {
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]1874 if ((unlikely(msg->sl.rq.v_l != 8) ||
1875 unlikely(req->data[msg->som + msg->sl.rq.v + 7] != '0')) &&
1876 unlikely(http_header_add_tail2(req, &txn->req, &txn->hdr_idx,
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]1877 "Connection: close", 17)) < 0)
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1878 goto return_bad_req;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1879 t->flags |= SN_CONN_CLOSED;
Willy Tarreaue15d9132006-12-14 22:26:42 +0100[diff] [blame]1880 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1881
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1882 /*************************************************************
1883 * OK, that's finished for the headers. We have done what we *
1884 * could. Let's switch to the DATA state. *
1885 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1886
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1887 t->cli_state = CL_STDATA;
1888 req->rlim = req->data + BUFSIZE; /* no more rewrite needed */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1889
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1890 t->logs.t_request = tv_diff(&t->logs.tv_accept, &now);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1891
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1892 if (!t->fe->clitimeout ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1893 (t->srv_state < SV_STDATA && t->be->srvtimeout)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1894 /* If the client has no timeout, or if the server is not ready yet,
1895 * and we know for sure that it can expire, then it's cleaner to
1896 * disable the timeout on the client side so that too low values
1897 * cannot make the sessions abort too early.
1898 *
1899 * FIXME-20050705: the server needs a way to re-enable this time-out
1900 * when it switches its state, otherwise a client can stay connected
1901 * indefinitely. This now seems to be OK.
1902 */
1903 tv_eternity(&req->rex);
1904 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1905
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1906 /* When a connection is tarpitted, we use the queue timeout for the
1907 * tarpit delay, which currently happens to be the server's connect
1908 * timeout. If unset, then set it to zero because we really want it
1909 * to expire at one moment.
1910 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]1911 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1912 t->req->l = 0;
1913 /* flush the request so that we can drop the connection early
1914 * if the client closes first.
1915 */
1916 tv_delayfrom(&req->cex, &now,
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1917 t->be->contimeout ? t->be->contimeout : 0);
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]1918 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1919
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1920 /* OK let's go on with the BODY now */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1921 goto process_data;
1922
1923 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]1924 txn->req.msg_state = HTTP_MSG_ERROR;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]1925 txn->status = 400;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1926 client_retnclose(t, error_message(t, HTTP_ERR_400));
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]1927 t->fe->failed_req++;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]1928 return_prx_cond:
1929 if (!(t->flags & SN_ERR_MASK))
1930 t->flags |= SN_ERR_PRXCOND;
1931 if (!(t->flags & SN_FINST_MASK))
1932 t->flags |= SN_FINST_R;
1933 return 1;
1934
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1935 }
1936 else if (c == CL_STDATA) {
1937 process_data:
1938 /* FIXME: this error handling is partly buggy because we always report
1939 * a 'DATA' phase while we don't know if the server was in IDLE, CONN
1940 * or HEADER phase. BTW, it's not logical to expire the client while
1941 * we're waiting for the server to connect.
1942 */
1943 /* read or write error */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]1944 if (rep->flags & BF_WRITE_ERROR || req->flags & BF_READ_ERROR) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]1945 tv_eternity(&req->rex);
1946 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1947 fd_delete(t->cli_fd);
1948 t->cli_state = CL_STCLOSE;
1949 if (!(t->flags & SN_ERR_MASK))
1950 t->flags |= SN_ERR_CLICL;
1951 if (!(t->flags & SN_FINST_MASK)) {
1952 if (t->pend_pos)
1953 t->flags |= SN_FINST_Q;
1954 else if (s == SV_STCONN)
1955 t->flags |= SN_FINST_C;
1956 else
1957 t->flags |= SN_FINST_D;
1958 }
1959 return 1;
1960 }
1961 /* last read, or end of server write */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]1962 else if (req->flags & BF_READ_NULL || s == SV_STSHUTW || s == SV_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1963 EV_FD_CLR(t->cli_fd, DIR_RD);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]1964 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1965 t->cli_state = CL_STSHUTR;
1966 return 1;
1967 }
1968 /* last server read and buffer empty */
1969 else if ((s == SV_STSHUTR || s == SV_STCLOSE) && (rep->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1970 EV_FD_CLR(t->cli_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]1971 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1972 shutdown(t->cli_fd, SHUT_WR);
1973 /* We must ensure that the read part is still alive when switching
1974 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1975 EV_FD_SET(t->cli_fd, DIR_RD);
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]1976 if (t->fe->clitimeout)
1977 tv_delayfrom(&req->rex, &now, t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1978 t->cli_state = CL_STSHUTW;
1979 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
1980 return 1;
1981 }
1982 /* read timeout */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]1983 else if (tv_cmp2_ms(&req->rex, &now) <= 0) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]1984 EV_FD_CLR(t->cli_fd, DIR_RD);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]1985 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1986 t->cli_state = CL_STSHUTR;
1987 if (!(t->flags & SN_ERR_MASK))
1988 t->flags |= SN_ERR_CLITO;
1989 if (!(t->flags & SN_FINST_MASK)) {
1990 if (t->pend_pos)
1991 t->flags |= SN_FINST_Q;
1992 else if (s == SV_STCONN)
1993 t->flags |= SN_FINST_C;
1994 else
1995 t->flags |= SN_FINST_D;
1996 }
1997 return 1;
1998 }
1999 /* write timeout */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2000 else if (tv_cmp2_ms(&rep->wex, &now) <= 0) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2001 EV_FD_CLR(t->cli_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2002 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2003 shutdown(t->cli_fd, SHUT_WR);
2004 /* We must ensure that the read part is still alive when switching
2005 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2006 EV_FD_SET(t->cli_fd, DIR_RD);
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2007 if (t->fe->clitimeout)
2008 tv_delayfrom(&req->rex, &now, t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2009
2010 t->cli_state = CL_STSHUTW;
2011 if (!(t->flags & SN_ERR_MASK))
2012 t->flags |= SN_ERR_CLITO;
2013 if (!(t->flags & SN_FINST_MASK)) {
2014 if (t->pend_pos)
2015 t->flags |= SN_FINST_Q;
2016 else if (s == SV_STCONN)
2017 t->flags |= SN_FINST_C;
2018 else
2019 t->flags |= SN_FINST_D;
2020 }
2021 return 1;
2022 }
2023
2024 if (req->l >= req->rlim - req->data) {
2025 /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2026 if (EV_FD_COND_C(t->cli_fd, DIR_RD)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2027 /* stop reading until we get some space */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2028 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2029 }
2030 } else {
2031 /* there's still some space in the buffer */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2032 if (EV_FD_COND_S(t->cli_fd, DIR_RD)) {
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2033 if (!t->fe->clitimeout ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2034 (t->srv_state < SV_STDATA && t->be->srvtimeout))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2035 /* If the client has no timeout, or if the server not ready yet, and we
2036 * know for sure that it can expire, then it's cleaner to disable the
2037 * timeout on the client side so that too low values cannot make the
2038 * sessions abort too early.
2039 */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2040 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2041 else
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2042 tv_delayfrom(&req->rex, &now, t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2043 }
2044 }
2045
2046 if ((rep->l == 0) ||
2047 ((s < SV_STDATA) /* FIXME: this may be optimized && (rep->w == rep->h)*/)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2048 if (EV_FD_COND_C(t->cli_fd, DIR_WR)) {
2049 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2050 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2051 }
2052 } else {
2053 /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2054 if (EV_FD_COND_S(t->cli_fd, DIR_WR)) {
2055 /* restart writing */
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2056 if (t->fe->clitimeout) {
2057 tv_delayfrom(&rep->wex, &now, t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2058 /* FIXME: to prevent the client from expiring read timeouts during writes,
2059 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2060 req->rex = rep->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2061 }
2062 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2063 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2064 }
2065 }
2066 return 0; /* other cases change nothing */
2067 }
2068 else if (c == CL_STSHUTR) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2069 if (rep->flags & BF_WRITE_ERROR) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2070 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2071 fd_delete(t->cli_fd);
2072 t->cli_state = CL_STCLOSE;
2073 if (!(t->flags & SN_ERR_MASK))
2074 t->flags |= SN_ERR_CLICL;
2075 if (!(t->flags & SN_FINST_MASK)) {
2076 if (t->pend_pos)
2077 t->flags |= SN_FINST_Q;
2078 else if (s == SV_STCONN)
2079 t->flags |= SN_FINST_C;
2080 else
2081 t->flags |= SN_FINST_D;
2082 }
2083 return 1;
2084 }
2085 else if ((s == SV_STSHUTR || s == SV_STCLOSE) && (rep->l == 0)
2086 && !(t->flags & SN_SELF_GEN)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2087 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2088 fd_delete(t->cli_fd);
2089 t->cli_state = CL_STCLOSE;
2090 return 1;
2091 }
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2092 else if (tv_cmp2_ms(&rep->wex, &now) <= 0) {
2093 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2094 fd_delete(t->cli_fd);
2095 t->cli_state = CL_STCLOSE;
2096 if (!(t->flags & SN_ERR_MASK))
2097 t->flags |= SN_ERR_CLITO;
2098 if (!(t->flags & SN_FINST_MASK)) {
2099 if (t->pend_pos)
2100 t->flags |= SN_FINST_Q;
2101 else if (s == SV_STCONN)
2102 t->flags |= SN_FINST_C;
2103 else
2104 t->flags |= SN_FINST_D;
2105 }
2106 return 1;
2107 }
2108
2109 if (t->flags & SN_SELF_GEN) {
2110 produce_content(t);
2111 if (rep->l == 0) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2112 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2113 fd_delete(t->cli_fd);
2114 t->cli_state = CL_STCLOSE;
2115 return 1;
2116 }
2117 }
2118
2119 if ((rep->l == 0)
2120 || ((s == SV_STHEADERS) /* FIXME: this may be optimized && (rep->w == rep->h)*/)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2121 if (EV_FD_COND_C(t->cli_fd, DIR_WR)) {
2122 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2123 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2124 }
2125 } else {
2126 /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2127 if (EV_FD_COND_S(t->cli_fd, DIR_WR)) {
2128 /* restart writing */
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2129 if (t->fe->clitimeout) {
2130 tv_delayfrom(&rep->wex, &now, t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2131 /* FIXME: to prevent the client from expiring read timeouts during writes,
2132 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2133 req->rex = rep->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2134 }
2135 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2136 tv_eternity(&rep->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2137 }
2138 }
2139 return 0;
2140 }
2141 else if (c == CL_STSHUTW) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2142 if (req->flags & BF_READ_ERROR) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2143 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2144 fd_delete(t->cli_fd);
2145 t->cli_state = CL_STCLOSE;
2146 if (!(t->flags & SN_ERR_MASK))
2147 t->flags |= SN_ERR_CLICL;
2148 if (!(t->flags & SN_FINST_MASK)) {
2149 if (t->pend_pos)
2150 t->flags |= SN_FINST_Q;
2151 else if (s == SV_STCONN)
2152 t->flags |= SN_FINST_C;
2153 else
2154 t->flags |= SN_FINST_D;
2155 }
2156 return 1;
2157 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2158 else if (req->flags & BF_READ_NULL || s == SV_STSHUTW || s == SV_STCLOSE) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2159 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2160 fd_delete(t->cli_fd);
2161 t->cli_state = CL_STCLOSE;
2162 return 1;
2163 }
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2164 else if (tv_cmp2_ms(&req->rex, &now) <= 0) {
2165 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2166 fd_delete(t->cli_fd);
2167 t->cli_state = CL_STCLOSE;
2168 if (!(t->flags & SN_ERR_MASK))
2169 t->flags |= SN_ERR_CLITO;
2170 if (!(t->flags & SN_FINST_MASK)) {
2171 if (t->pend_pos)
2172 t->flags |= SN_FINST_Q;
2173 else if (s == SV_STCONN)
2174 t->flags |= SN_FINST_C;
2175 else
2176 t->flags |= SN_FINST_D;
2177 }
2178 return 1;
2179 }
2180 else if (req->l >= req->rlim - req->data) {
2181 /* no room to read more data */
2182
2183 /* FIXME-20050705: is it possible for a client to maintain a session
2184 * after the timeout by sending more data after it receives a close ?
2185 */
2186
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2187 if (EV_FD_COND_C(t->cli_fd, DIR_RD)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2188 /* stop reading until we get some space */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2189 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2190 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2191 }
2192 } else {
2193 /* there's still some space in the buffer */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2194 if (EV_FD_COND_S(t->cli_fd, DIR_RD)) {
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2195 if (t->fe->clitimeout)
2196 tv_delayfrom(&req->rex, &now, t->fe->clitimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2197 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2198 tv_eternity(&req->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2199 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2200 }
2201 }
2202 return 0;
2203 }
2204 else { /* CL_STCLOSE: nothing to do */
2205 if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
2206 int len;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2207 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]2208 write(1, trash, len);
2209 }
2210 return 0;
2211 }
2212 return 0;
2213}
2214
2215
2216/*
2217 * manages the server FSM and its socket. It returns 1 if a state has changed
2218 * (and a resync may be needed), 0 else.
2219 */
2220int process_srv(struct session *t)
2221{
2222 int s = t->srv_state;
2223 int c = t->cli_state;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2224 struct http_txn *txn = &t->txn;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2225 struct buffer *req = t->req;
2226 struct buffer *rep = t->rep;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2227 int conn_err;
2228
2229#ifdef DEBUG_FULL
2230 fprintf(stderr,"process_srv: c=%s, s=%s\n", cli_stnames[c], srv_stnames[s]);
2231#endif
2232 //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]2233 //EV_FD_ISSET(t->cli_fd, DIR_RD), EV_FD_ISSET(t->cli_fd, DIR_WR),
2234 //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]2235 //);
2236 if (s == SV_STIDLE) {
2237 if (c == CL_STHEADERS)
2238 return 0; /* stay in idle, waiting for data to reach the client side */
2239 else if (c == CL_STCLOSE || c == CL_STSHUTW ||
2240 (c == CL_STSHUTR &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2241 (t->req->l == 0 || t->be->options & PR_O_ABRT_CLOSE))) { /* give up */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2242 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2243 if (t->pend_pos)
2244 t->logs.t_queue = tv_diff(&t->logs.tv_accept, &now);
2245 /* note that this must not return any error because it would be able to
2246 * overwrite the client_retnclose() output.
2247 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2248 if (txn->flags & TX_CLTARPIT)
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2249 srv_close_with_err(t, SN_ERR_CLICL, SN_FINST_T, 0, NULL);
Willy Tarreau08fa2e32006-09-03 10:47:37 +0200[diff] [blame]2250 else
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2251 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]2252
2253 return 1;
2254 }
2255 else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2256 if (txn->flags & TX_CLTARPIT) {
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2257 /* This connection is being tarpitted. The CLIENT side has
2258 * already set the connect expiration date to the right
2259 * timeout. We just have to check that it has not expired.
2260 */
2261 if (tv_cmp2_ms(&req->cex, &now) > 0)
2262 return 0;
2263
2264 /* We will set the queue timer to the time spent, just for
2265 * logging purposes. We fake a 500 server error, so that the
2266 * attacker will not suspect his connection has been tarpitted.
2267 * It will not cause trouble to the logs because we can exclude
2268 * the tarpitted connections by filtering on the 'PT' status flags.
2269 */
2270 tv_eternity(&req->cex);
2271 t->logs.t_queue = tv_diff(&t->logs.tv_accept, &now);
2272 srv_close_with_err(t, SN_ERR_PRXCOND, SN_FINST_T,
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2273 500, error_message(t, HTTP_ERR_500));
Willy Tarreaub8750a82006-09-03 09:56:00 +0200[diff] [blame]2274 return 1;
2275 }
2276
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2277 /* Right now, we will need to create a connection to the server.
2278 * We might already have tried, and got a connection pending, in
2279 * which case we will not do anything till it's pending. It's up
2280 * to any other session to release it and wake us up again.
2281 */
2282 if (t->pend_pos) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2283 if (tv_cmp2_ms(&req->cex, &now) > 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2284 return 0;
2285 else {
2286 /* we've been waiting too long here */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2287 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2288 t->logs.t_queue = tv_diff(&t->logs.tv_accept, &now);
2289 srv_close_with_err(t, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2290 503, error_message(t, HTTP_ERR_503));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2291 if (t->srv)
2292 t->srv->failed_conns++;
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2293 t->fe->failed_conns++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2294 return 1;
2295 }
2296 }
2297
2298 do {
2299 /* first, get a connection */
2300 if (srv_redispatch_connect(t))
2301 return t->srv_state != SV_STIDLE;
2302
2303 /* try to (re-)connect to the server, and fail if we expire the
2304 * number of retries.
2305 */
2306 if (srv_retryable_connect(t)) {
2307 t->logs.t_queue = tv_diff(&t->logs.tv_accept, &now);
2308 return t->srv_state != SV_STIDLE;
2309 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2310 } while (1);
2311 }
2312 }
2313 else if (s == SV_STCONN) { /* connection in progress */
2314 if (c == CL_STCLOSE || c == CL_STSHUTW ||
2315 (c == CL_STSHUTR &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2316 (t->req->l == 0 || t->be->options & PR_O_ABRT_CLOSE))) { /* give up */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2317 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2318 fd_delete(t->srv_fd);
2319 if (t->srv)
2320 t->srv->cur_sess--;
2321
2322 /* note that this must not return any error because it would be able to
2323 * overwrite the client_retnclose() output.
2324 */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]2325 srv_close_with_err(t, SN_ERR_CLICL, SN_FINST_C, 0, NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2326 return 1;
2327 }
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2328 if (!(req->flags & BF_WRITE_STATUS) && tv_cmp2_ms(&req->cex, &now) > 0) {
2329 //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]2330 return 0; /* nothing changed */
2331 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2332 else if (!(req->flags & BF_WRITE_STATUS) || (req->flags & BF_WRITE_ERROR)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2333 /* timeout, asynchronous connect error or first write error */
2334 //fprintf(stderr,"2: c=%d, s=%d\n", c, s);
2335
2336 fd_delete(t->srv_fd);
2337 if (t->srv)
2338 t->srv->cur_sess--;
2339
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2340 if (!(req->flags & BF_WRITE_STATUS))
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2341 conn_err = SN_ERR_SRVTO; // it was a connect timeout.
2342 else
2343 conn_err = SN_ERR_SRVCL; // it was an asynchronous connect error.
2344
2345 /* ensure that we have enough retries left */
2346 if (srv_count_retry_down(t, conn_err))
2347 return 1;
2348
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2349 if (t->srv && t->conn_retries == 0 && t->be->options & PR_O_REDISP) {
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2350 /* We're on our last chance, and the REDISP option was specified.
2351 * We will ignore cookie and force to balance or use the dispatcher.
2352 */
2353 /* let's try to offer this slot to anybody */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2354 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2355 task_wakeup(t->srv->queue_mgt);
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2356
2357 if (t->srv)
2358 t->srv->failed_conns++;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2359 t->be->failed_conns++;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2360
2361 t->flags &= ~(SN_DIRECT | SN_ASSIGNED | SN_ADDR_SET);
2362 t->srv = NULL; /* it's left to the dispatcher to choose a server */
Willy Tarreaua5e65752007-03-18 20:53:22 +0100[diff] [blame]2363 http_flush_cookie_flags(txn);
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]2364
2365 /* first, get a connection */
2366 if (srv_redispatch_connect(t))
2367 return t->srv_state != SV_STIDLE;
2368 }
2369
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2370 do {
2371 /* Now we will try to either reconnect to the same server or
2372 * connect to another server. If the connection gets queued
2373 * because all servers are saturated, then we will go back to
2374 * the SV_STIDLE state.
2375 */
2376 if (srv_retryable_connect(t)) {
2377 t->logs.t_queue = tv_diff(&t->logs.tv_accept, &now);
2378 return t->srv_state != SV_STCONN;
2379 }
2380
2381 /* we need to redispatch the connection to another server */
2382 if (srv_redispatch_connect(t))
2383 return t->srv_state != SV_STCONN;
2384 } while (1);
2385 }
2386 else { /* no error or write 0 */
2387 t->logs.t_connect = tv_diff(&t->logs.tv_accept, &now);
2388
2389 //fprintf(stderr,"3: c=%d, s=%d\n", c, s);
2390 if (req->l == 0) /* nothing to write */ {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2391 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2392 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2393 } else /* need the right to write */ {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2394 EV_FD_SET(t->srv_fd, DIR_WR);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2395 if (t->be->srvtimeout) {
2396 tv_delayfrom(&req->wex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2397 /* FIXME: to prevent the server from expiring read timeouts during writes,
2398 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2399 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2400 }
2401 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2402 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2403 }
2404
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2405 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]2406 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2407 if (t->be->srvtimeout)
2408 tv_delayfrom(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2409 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2410 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2411
2412 t->srv_state = SV_STDATA;
2413 if (t->srv)
2414 t->srv->cum_sess++;
2415 rep->rlim = rep->data + BUFSIZE; /* no rewrite needed */
2416
2417 /* if the user wants to log as soon as possible, without counting
2418 bytes from the server, then this is the right moment. */
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2419 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2420 t->logs.t_close = t->logs.t_connect; /* to get a valid end date */
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]2421 tcp_sess_log(t);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2422 }
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]2423#ifdef CONFIG_HAP_TCPSPLICE
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2424 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
Willy Tarreau6d1a9882007-01-07 02:03:04 +0100[diff] [blame]2425 /* TCP splicing supported by both FE and BE */
2426 tcp_splice_splicefd(t->cli_fd, t->srv_fd, 0);
2427 }
2428#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2429 }
2430 else {
2431 t->srv_state = SV_STHEADERS;
2432 if (t->srv)
2433 t->srv->cum_sess++;
2434 rep->rlim = rep->data + BUFSIZE - MAXREWRITE; /* rewrite needed */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2435 t->txn.rsp.msg_state = HTTP_MSG_RPBEFORE;
2436 /* reset hdr_idx which was already initialized by the request.
2437 * right now, the http parser does it.
2438 * hdr_idx_init(&t->txn.hdr_idx);
2439 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2440 }
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2441 tv_eternity(&req->cex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2442 return 1;
2443 }
2444 }
2445 else if (s == SV_STHEADERS) { /* receiving server headers */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2446 /*
2447 * Now parse the partial (or complete) lines.
2448 * We will check the response syntax, and also join multi-line
2449 * headers. An index of all the lines will be elaborated while
2450 * parsing.
2451 *
2452 * For the parsing, we use a 28 states FSM.
2453 *
2454 * Here is the information we currently have :
2455 * rep->data + req->som = beginning of response
2456 * rep->data + req->eoh = end of processed headers / start of current one
2457 * rep->data + req->eol = end of current header or line (LF or CRLF)
2458 * rep->lr = first non-visited byte
2459 * rep->r = end of data
2460 */
2461
2462 int cur_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2463 struct http_msg *msg = &txn->rsp;
2464 struct proxy *cur_proxy;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2465
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2466 if (likely(rep->lr < rep->r))
2467 http_msg_analyzer(rep, msg, &txn->hdr_idx);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2468
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2469 /* 1: we might have to print this header in debug mode */
2470 if (unlikely((global.mode & MODE_DEBUG) &&
2471 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
2472 (msg->msg_state == HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
2473 char *eol, *sol;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2474
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2475 sol = rep->data + msg->som;
2476 eol = sol + msg->sl.rq.l;
2477 debug_hdr("srvrep", t, sol, eol);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2478
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2479 sol += hdr_idx_first_pos(&txn->hdr_idx);
2480 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2481
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2482 while (cur_idx) {
2483 eol = sol + txn->hdr_idx.v[cur_idx].len;
2484 debug_hdr("srvhdr", t, sol, eol);
2485 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2486 cur_idx = txn->hdr_idx.v[cur_idx].next;
2487 }
2488 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2489
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2490
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2491 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]2492 /* fd in DIR_RD was disabled, perhaps because of a previous buffer
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2493 * full. We cannot loop here since stream_sock_read will disable it only if
2494 * rep->l == rlim-data
2495 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2496 if (t->be->srvtimeout)
2497 tv_delayfrom(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2498 else
2499 tv_eternity(&rep->rex);
2500 }
2501
2502
2503 /*
2504 * Now we quickly check if we have found a full valid response.
2505 * If not so, we check the FD and buffer states before leaving.
2506 * A full response is indicated by the fact that we have seen
2507 * the double LF/CRLF, so the state is HTTP_MSG_BODY. Invalid
2508 * responses are checked first.
2509 *
2510 * Depending on whether the client is still there or not, we
2511 * may send an error response back or not. Note that normally
2512 * we should only check for HTTP status there, and check I/O
2513 * errors somewhere else.
2514 */
2515
2516 if (unlikely(msg->msg_state != HTTP_MSG_BODY)) {
2517
2518 /* Invalid response, or read error or write error */
2519 if (unlikely((msg->msg_state == HTTP_MSG_ERROR) ||
2520 (req->flags & BF_WRITE_ERROR) ||
2521 (rep->flags & BF_READ_ERROR))) {
2522 tv_eternity(&rep->rex);
2523 tv_eternity(&req->wex);
2524 fd_delete(t->srv_fd);
2525 if (t->srv) {
2526 t->srv->cur_sess--;
2527 t->srv->failed_resp++;
2528 }
2529 t->be->failed_resp++;
2530 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2531 txn->status = 502;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2532 client_return(t, error_message(t, HTTP_ERR_502));
2533 if (!(t->flags & SN_ERR_MASK))
2534 t->flags |= SN_ERR_SRVCL;
2535 if (!(t->flags & SN_FINST_MASK))
2536 t->flags |= SN_FINST_H;
2537 /* We used to have a free connection slot. Since we'll never use it,
2538 * we have to inform the server that it may be used by another session.
2539 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2540 if (t->srv && may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2541 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2542
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2543 return 1;
2544 }
2545
2546 /* end of client write or end of server read.
2547 * since we are in header mode, if there's no space left for headers, we
2548 * won't be able to free more later, so the session will never terminate.
2549 */
2550 else if (unlikely(rep->flags & BF_READ_NULL ||
2551 c == CL_STSHUTW || c == CL_STCLOSE ||
2552 rep->l >= rep->rlim - rep->data)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2553 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2554 tv_eternity(&rep->rex);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2555 t->srv_state = SV_STSHUTR;
2556 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
2557 return 1;
2558 }
2559
2560 /* read timeout : return a 504 to the client.
2561 */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2562 else if (unlikely(EV_FD_ISSET(t->srv_fd, DIR_RD) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2563 tv_cmp2_ms(&rep->rex, &now) <= 0)) {
2564 tv_eternity(&rep->rex);
2565 tv_eternity(&req->wex);
2566 fd_delete(t->srv_fd);
2567 if (t->srv) {
2568 t->srv->cur_sess--;
2569 t->srv->failed_resp++;
2570 }
2571 t->be->failed_resp++;
2572 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2573 txn->status = 504;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2574 client_return(t, error_message(t, HTTP_ERR_504));
2575 if (!(t->flags & SN_ERR_MASK))
2576 t->flags |= SN_ERR_SRVTO;
2577 if (!(t->flags & SN_FINST_MASK))
2578 t->flags |= SN_FINST_H;
2579 /* We used to have a free connection slot. Since we'll never use it,
2580 * we have to inform the server that it may be used by another session.
2581 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2582 if (t->srv && may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2583 task_wakeup(t->srv->queue_mgt);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2584 return 1;
2585 }
2586
2587 /* last client read and buffer empty */
2588 /* FIXME!!! here, we don't want to switch to SHUTW if the
2589 * client shuts read too early, because we may still have
2590 * some work to do on the headers.
2591 * The side-effect is that if the client completely closes its
2592 * connection during SV_STHEADER, the connection to the server
2593 * is kept until a response comes back or the timeout is reached.
2594 */
2595 else if (unlikely((/*c == CL_STSHUTR ||*/ c == CL_STCLOSE) &&
2596 (req->l == 0))) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2597 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2598 tv_eternity(&req->wex);
2599
2600 /* We must ensure that the read part is still
2601 * alive when switching to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2602 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2603 if (t->be->srvtimeout)
2604 tv_delayfrom(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2605
2606 shutdown(t->srv_fd, SHUT_WR);
2607 t->srv_state = SV_STSHUTW;
2608 return 1;
2609 }
2610
2611 /* write timeout */
2612 /* FIXME!!! here, we don't want to switch to SHUTW if the
2613 * client shuts read too early, because we may still have
2614 * some work to do on the headers.
2615 */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2616 else if (unlikely(EV_FD_ISSET(t->srv_fd, DIR_WR) &&
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2617 tv_cmp2_ms(&req->wex, &now) <= 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2618 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2619 tv_eternity(&req->wex);
2620 shutdown(t->srv_fd, SHUT_WR);
2621 /* We must ensure that the read part is still alive
2622 * when switching to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2623 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2624 if (t->be->srvtimeout)
2625 tv_delayfrom(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2626
2627 t->srv_state = SV_STSHUTW;
2628 if (!(t->flags & SN_ERR_MASK))
2629 t->flags |= SN_ERR_SRVTO;
2630 if (!(t->flags & SN_FINST_MASK))
2631 t->flags |= SN_FINST_H;
2632 return 1;
2633 }
2634
2635 /*
2636 * And now the non-error cases.
2637 */
2638
2639 /* Data remaining in the request buffer.
2640 * This happens during the first pass here, and during
2641 * long posts.
2642 */
2643 else if (likely(req->l)) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2644 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
2645 /* restart writing */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2646 if (t->be->srvtimeout) {
2647 tv_delayfrom(&req->wex, &now, t->be->srvtimeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2648 /* FIXME: to prevent the server from expiring read timeouts during writes,
2649 * we refresh it. */
2650 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2651 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2652 else
2653 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2654 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2655 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2656
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2657 /* nothing left in the request buffer */
2658 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]2659 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
2660 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2661 tv_eternity(&req->wex);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2662 }
2663 }
2664
2665 return t->srv_state != SV_STHEADERS;
2666 }
2667
2668
2669 /*****************************************************************
2670 * More interesting part now : we know that we have a complete *
2671 * response which at least looks like HTTP. We have an indicator *
2672 * of each header's length, so we can parse them quickly. *
2673 ****************************************************************/
2674
2675 /*
2676 * 1: get the status code and check for cacheability.
2677 */
2678
2679 t->logs.logwait &= ~LW_RESP;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2680 txn->status = strl2ui(rep->data + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2681
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2682 switch (txn->status) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2683 case 200:
2684 case 203:
2685 case 206:
2686 case 300:
2687 case 301:
2688 case 410:
2689 /* RFC2616 @13.4:
2690 * "A response received with a status code of
2691 * 200, 203, 206, 300, 301 or 410 MAY be stored
2692 * by a cache (...) unless a cache-control
2693 * directive prohibits caching."
2694 *
2695 * RFC2616 @9.5: POST method :
2696 * "Responses to this method are not cacheable,
2697 * unless the response includes appropriate
2698 * Cache-Control or Expires header fields."
2699 */
2700 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2701 unlikely(t->be->options & PR_O_CHK_CACHE))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2702 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2703 break;
2704 default:
2705 break;
2706 }
2707
2708 /*
2709 * 2: we may need to capture headers
2710 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2711 if (unlikely((t->logs.logwait & LW_RSPHDR) && t->fe->rsp_cap))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2712 capture_headers(rep->data + msg->som, &txn->hdr_idx,
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2713 txn->rsp.cap, t->fe->rsp_cap);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2714
2715 /*
2716 * 3: we will have to evaluate the filters.
2717 * As opposed to version 1.2, now they will be evaluated in the
2718 * filters order and not in the header order. This means that
2719 * each filter has to be validated among all headers.
2720 *
2721 * Filters are tried with ->be first, then with ->fe if it is
2722 * different from ->be.
2723 */
2724
2725 t->flags &= ~SN_CONN_CLOSED; /* prepare for inspection */
2726
2727 cur_proxy = t->be;
2728 while (1) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2729 struct proxy *rule_set = cur_proxy;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2730
2731 /* try headers filters */
2732 if (rule_set->rsp_exp != NULL) {
2733 if (apply_filters_to_response(t, rep, rule_set->rsp_exp) < 0) {
2734 return_bad_resp:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2735 if (t->srv) {
2736 t->srv->cur_sess--;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2737 t->srv->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2738 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2739 cur_proxy->failed_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2740 return_srv_prx_502:
2741 tv_eternity(&rep->rex);
2742 tv_eternity(&req->wex);
2743 fd_delete(t->srv_fd);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2744 t->srv_state = SV_STCLOSE;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]2745 txn->status = 502;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]2746 client_return(t, error_message(t, HTTP_ERR_502));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2747 if (!(t->flags & SN_ERR_MASK))
2748 t->flags |= SN_ERR_PRXCOND;
2749 if (!(t->flags & SN_FINST_MASK))
2750 t->flags |= SN_FINST_H;
2751 /* We used to have a free connection slot. Since we'll never use it,
2752 * we have to inform the server that it may be used by another session.
2753 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2754 if (t->srv && may_dequeue_tasks(t->srv, cur_proxy))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2755 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2756 return 1;
2757 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2758 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2759
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2760 /* has the response been denied ? */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2761 if (txn->flags & TX_SVDENY) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2762 if (t->srv) {
2763 t->srv->cur_sess--;
2764 t->srv->failed_secu++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2765 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2766 cur_proxy->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2767 goto return_srv_prx_502;
2768 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2769
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2770 /* We might have to check for "Connection:" */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2771 if (((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2772 !(t->flags & SN_CONN_CLOSED)) {
2773 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2774 int cur_idx, old_idx, delta, val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2775 struct hdr_idx_elem *cur_hdr;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2776
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2777 cur_next = rep->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
2778 old_idx = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2779
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2780 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
2781 cur_hdr = &txn->hdr_idx.v[cur_idx];
2782 cur_ptr = cur_next;
2783 cur_end = cur_ptr + cur_hdr->len;
2784 cur_next = cur_end + cur_hdr->cr + 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2785
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2786 val = http_header_match2(cur_ptr, cur_end, "Connection", 10);
2787 if (val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2788 /* 3 possibilities :
2789 * - we have already set Connection: close,
2790 * so we remove this line.
2791 * - we have not yet set Connection: close,
2792 * but this line indicates close. We leave
2793 * it untouched and set the flag.
2794 * - we have not yet set Connection: close,
2795 * and this line indicates non-close. We
2796 * replace it.
2797 */
2798 if (t->flags & SN_CONN_CLOSED) {
2799 delta = buffer_replace2(rep, cur_ptr, cur_next, NULL, 0);
2800 txn->rsp.eoh += delta;
2801 cur_next += delta;
2802 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
2803 txn->hdr_idx.used--;
2804 cur_hdr->len = 0;
2805 } else {
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]2806 if (strncasecmp(cur_ptr + val, "close", 5) != 0) {
2807 delta = buffer_replace2(rep, cur_ptr + val, cur_end,
2808 "close", 5);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2809 cur_next += delta;
2810 cur_hdr->len += delta;
2811 txn->rsp.eoh += delta;
2812 }
2813 t->flags |= SN_CONN_CLOSED;
2814 }
2815 }
2816 old_idx = cur_idx;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2817 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2818 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2819
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2820 /* add response headers from the rule sets in the same order */
2821 for (cur_idx = 0; cur_idx < rule_set->nb_rspadd; cur_idx++) {
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2822 if (unlikely(http_header_add_tail(rep, &txn->rsp, &txn->hdr_idx,
2823 rule_set->rsp_add[cur_idx])) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2824 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2825 }
2826
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2827 /* check whether we're already working on the frontend */
2828 if (cur_proxy == t->fe)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2829 break;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2830 cur_proxy = t->fe;
2831 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2832
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2833 /*
2834 * 4: check for server cookie.
2835 */
2836 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2837
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2838 /*
2839 * 5: add server cookie in the response if needed
2840 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2841 if ((t->srv) && !(t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_INS) &&
2842 (!(t->be->options & PR_O_COOK_POST) || (txn->meth == HTTP_METH_POST))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2843 int len;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2844
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2845 /* the server is known, it's not the one the client requested, we have to
2846 * insert a set-cookie here, except if we want to insert only on POST
2847 * requests and this one isn't. Note that servers which don't have cookies
2848 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2849 */
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2850 len = sprintf(trash, "Set-Cookie: %s=%s; path=/",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2851 t->be->cookie_name,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2852 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]2853
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2854 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
2855 trash, len)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2856 goto return_bad_resp;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2857 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2858
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2859 /* Here, we will tell an eventual cache on the client side that we don't
2860 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
2861 * Some caches understand the correct form: 'no-cache="set-cookie"', but
2862 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
2863 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2864 if (t->be->options & PR_O_COOK_NOC) {
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2865 if (unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
2866 "Cache-control: private", 22)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2867 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2868 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2869 }
2870
2871
2872 /*
2873 * 6: check for cache-control or pragma headers.
2874 */
2875 check_response_for_cacheability(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2876
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2877
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2878 /*
2879 * 7: check if result will be cacheable with a cookie.
2880 * We'll block the response if security checks have caught
2881 * nasty things such as a cacheable cookie.
2882 */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]2883 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) ==
2884 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_ANY)) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2885 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2886
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2887 /* we're in presence of a cacheable response containing
2888 * a set-cookie header. We'll block it as requested by
2889 * the 'checkcache' option, and send an alert.
2890 */
2891 if (t->srv) {
2892 t->srv->cur_sess--;
2893 t->srv->failed_secu++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2894 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2895 t->be->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2896
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2897 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2898 t->be->id, t->srv?t->srv->id:"<dispatch>");
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2899 send_log(t->be, LOG_ALERT,
2900 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2901 t->be->id, t->srv?t->srv->id:"<dispatch>");
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2902 goto return_srv_prx_502;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2903 }
2904
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2905 /*
2906 * 8: add "Connection: close" if needed and not yet set.
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2907 * 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]2908 */
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2909 if (!(t->flags & SN_CONN_CLOSED) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2910 ((t->fe->options | t->be->options) & PR_O_HTTP_CLOSE)) {
Willy Tarreau2807efd2007-03-25 23:47:23 +0200[diff] [blame]2911 if ((unlikely(msg->sl.st.v_l != 8) ||
2912 unlikely(req->data[msg->som + 7] != '0')) &&
2913 unlikely(http_header_add_tail2(rep, &txn->rsp, &txn->hdr_idx,
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]2914 "Connection: close", 17)) < 0)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2915 goto return_bad_resp;
2916 t->flags |= SN_CONN_CLOSED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2917 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2918
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2919
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2920 /*************************************************************
2921 * OK, that's finished for the headers. We have done what we *
2922 * could. Let's switch to the DATA state. *
2923 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2924
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2925 t->srv_state = SV_STDATA;
2926 rep->rlim = rep->data + BUFSIZE; /* no more rewrite needed */
2927 t->logs.t_data = tv_diff(&t->logs.tv_accept, &now);
2928
2929 /* client connection already closed or option 'forceclose' required :
2930 * we close the server's outgoing connection right now.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2931 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2932 if ((req->l == 0) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2933 (c == CL_STSHUTR || c == CL_STCLOSE || t->be->options & PR_O_FORCE_CLO)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2934 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2935 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2936
2937 /* We must ensure that the read part is still alive when switching
2938 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2939 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2940 if (t->be->srvtimeout)
2941 tv_delayfrom(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2942
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2943 shutdown(t->srv_fd, SHUT_WR);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2944 t->srv_state = SV_STSHUTW;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2945 }
2946
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2947#ifdef CONFIG_HAP_TCPSPLICE
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2948 if ((t->fe->options & t->be->options) & PR_O_TCPSPLICE) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2949 /* TCP splicing supported by both FE and BE */
2950 tcp_splice_splicefd(t->cli_fd, t->srv_fd, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2951 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2952#endif
2953 /* if the user wants to log as soon as possible, without counting
2954 bytes from the server, then this is the right moment. */
2955 if (t->fe->to_log && !(t->logs.logwait & LW_BYTES)) {
2956 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
Willy Tarreaub4987172007-03-18 16:28:03 +0100[diff] [blame]2957 t->logs.bytes_in = txn->rsp.eoh;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]2958 if (t->fe->to_log & LW_REQ)
2959 http_sess_log(t);
2960 else
2961 tcp_sess_log(t);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2962 }
2963
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2964 /* Note: we must not try to cheat by jumping directly to DATA,
2965 * otherwise we would not let the client side wake up.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2966 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]2967
2968 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2969 }
2970 else if (s == SV_STDATA) {
2971 /* read or write error */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2972 if (req->flags & BF_WRITE_ERROR || rep->flags & BF_READ_ERROR) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2973 tv_eternity(&rep->rex);
2974 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2975 fd_delete(t->srv_fd);
2976 if (t->srv) {
2977 t->srv->cur_sess--;
2978 t->srv->failed_resp++;
2979 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]2980 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2981 t->srv_state = SV_STCLOSE;
2982 if (!(t->flags & SN_ERR_MASK))
2983 t->flags |= SN_ERR_SRVCL;
2984 if (!(t->flags & SN_FINST_MASK))
2985 t->flags |= SN_FINST_D;
2986 /* We used to have a free connection slot. Since we'll never use it,
2987 * we have to inform the server that it may be used by another session.
2988 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]2989 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]2990 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2991
2992 return 1;
2993 }
2994 /* last read, or end of client write */
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]2995 else if (rep->flags & BF_READ_NULL || c == CL_STSHUTW || c == CL_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]2996 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]2997 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]2998 t->srv_state = SV_STSHUTR;
2999 //fprintf(stderr,"%p:%s(%d), c=%d, s=%d\n", t, __FUNCTION__, __LINE__, t->cli_state, t->cli_state);
3000 return 1;
3001 }
3002 /* end of client read and no more data to send */
3003 else if ((c == CL_STSHUTR || c == CL_STCLOSE) && (req->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3004 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3005 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3006 shutdown(t->srv_fd, SHUT_WR);
3007 /* We must ensure that the read part is still alive when switching
3008 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3009 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3010 if (t->be->srvtimeout)
3011 tv_delayfrom(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3012
3013 t->srv_state = SV_STSHUTW;
3014 return 1;
3015 }
3016 /* read timeout */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3017 else if (tv_cmp2_ms(&rep->rex, &now) <= 0) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3018 EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3019 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3020 t->srv_state = SV_STSHUTR;
3021 if (!(t->flags & SN_ERR_MASK))
3022 t->flags |= SN_ERR_SRVTO;
3023 if (!(t->flags & SN_FINST_MASK))
3024 t->flags |= SN_FINST_D;
3025 return 1;
3026 }
3027 /* write timeout */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3028 else if (tv_cmp2_ms(&req->wex, &now) <= 0) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3029 EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3030 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3031 shutdown(t->srv_fd, SHUT_WR);
3032 /* We must ensure that the read part is still alive when switching
3033 * to shutw */
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3034 EV_FD_SET(t->srv_fd, DIR_RD);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3035 if (t->be->srvtimeout)
3036 tv_delayfrom(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3037 t->srv_state = SV_STSHUTW;
3038 if (!(t->flags & SN_ERR_MASK))
3039 t->flags |= SN_ERR_SRVTO;
3040 if (!(t->flags & SN_FINST_MASK))
3041 t->flags |= SN_FINST_D;
3042 return 1;
3043 }
3044
3045 /* recompute request time-outs */
3046 if (req->l == 0) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3047 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
3048 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3049 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3050 }
3051 }
3052 else { /* buffer not empty, there are still data to be transferred */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3053 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
3054 /* restart writing */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3055 if (t->be->srvtimeout) {
3056 tv_delayfrom(&req->wex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3057 /* FIXME: to prevent the server from expiring read timeouts during writes,
3058 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3059 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3060 }
3061 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3062 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3063 }
3064 }
3065
3066 /* recompute response time-outs */
3067 if (rep->l == BUFSIZE) { /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3068 if (EV_FD_COND_C(t->srv_fd, DIR_RD)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3069 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3070 }
3071 }
3072 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3073 if (EV_FD_COND_S(t->srv_fd, DIR_RD)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3074 if (t->be->srvtimeout)
3075 tv_delayfrom(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3076 else
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
3081 return 0; /* other cases change nothing */
3082 }
3083 else if (s == SV_STSHUTR) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3084 if (req->flags & BF_WRITE_ERROR) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3085 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3086 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3087 fd_delete(t->srv_fd);
3088 if (t->srv) {
3089 t->srv->cur_sess--;
3090 t->srv->failed_resp++;
3091 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3092 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3093 //close(t->srv_fd);
3094 t->srv_state = SV_STCLOSE;
3095 if (!(t->flags & SN_ERR_MASK))
3096 t->flags |= SN_ERR_SRVCL;
3097 if (!(t->flags & SN_FINST_MASK))
3098 t->flags |= SN_FINST_D;
3099 /* We used to have a free connection slot. Since we'll never use it,
3100 * we have to inform the server that it may be used by another session.
3101 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3102 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3103 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3104
3105 return 1;
3106 }
3107 else if ((c == CL_STSHUTR || c == CL_STCLOSE) && (req->l == 0)) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3108 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3109 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3110 fd_delete(t->srv_fd);
3111 if (t->srv)
3112 t->srv->cur_sess--;
3113 //close(t->srv_fd);
3114 t->srv_state = SV_STCLOSE;
3115 /* We used to have a free connection slot. Since we'll never use it,
3116 * we have to inform the server that it may be used by another session.
3117 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3118 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3119 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3120
3121 return 1;
3122 }
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3123 else if (tv_cmp2_ms(&req->wex, &now) <= 0) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3124 //EV_FD_CLR(t->srv_fd, DIR_WR);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3125 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3126 fd_delete(t->srv_fd);
3127 if (t->srv)
3128 t->srv->cur_sess--;
3129 //close(t->srv_fd);
3130 t->srv_state = SV_STCLOSE;
3131 if (!(t->flags & SN_ERR_MASK))
3132 t->flags |= SN_ERR_SRVTO;
3133 if (!(t->flags & SN_FINST_MASK))
3134 t->flags |= SN_FINST_D;
3135 /* We used to have a free connection slot. Since we'll never use it,
3136 * we have to inform the server that it may be used by another session.
3137 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3138 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3139 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3140
3141 return 1;
3142 }
3143 else if (req->l == 0) {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3144 if (EV_FD_COND_C(t->srv_fd, DIR_WR)) {
3145 /* stop writing */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3146 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3147 }
3148 }
3149 else { /* buffer not empty */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3150 if (EV_FD_COND_S(t->srv_fd, DIR_WR)) {
3151 /* restart writing */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3152 if (t->be->srvtimeout) {
3153 tv_delayfrom(&req->wex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3154 /* FIXME: to prevent the server from expiring read timeouts during writes,
3155 * we refresh it. */
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3156 rep->rex = req->wex;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3157 }
3158 else
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3159 tv_eternity(&req->wex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3160 }
3161 }
3162 return 0;
3163 }
3164 else if (s == SV_STSHUTW) {
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3165 if (rep->flags & BF_READ_ERROR) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3166 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3167 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3168 fd_delete(t->srv_fd);
3169 if (t->srv) {
3170 t->srv->cur_sess--;
3171 t->srv->failed_resp++;
3172 }
Willy Tarreau73de9892006-11-30 11:40:23 +0100[diff] [blame]3173 t->be->failed_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3174 //close(t->srv_fd);
3175 t->srv_state = SV_STCLOSE;
3176 if (!(t->flags & SN_ERR_MASK))
3177 t->flags |= SN_ERR_SRVCL;
3178 if (!(t->flags & SN_FINST_MASK))
3179 t->flags |= SN_FINST_D;
3180 /* We used to have a free connection slot. Since we'll never use it,
3181 * we have to inform the server that it may be used by another session.
3182 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3183 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3184 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3185
3186 return 1;
3187 }
Willy Tarreau0f9f5052006-07-29 17:39:25 +0200[diff] [blame]3188 else if (rep->flags & BF_READ_NULL || c == CL_STSHUTW || c == CL_STCLOSE) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3189 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3190 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3191 fd_delete(t->srv_fd);
3192 if (t->srv)
3193 t->srv->cur_sess--;
3194 //close(t->srv_fd);
3195 t->srv_state = SV_STCLOSE;
3196 /* We used to have a free connection slot. Since we'll never use it,
3197 * we have to inform the server that it may be used by another session.
3198 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3199 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3200 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3201
3202 return 1;
3203 }
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3204 else if (tv_cmp2_ms(&rep->rex, &now) <= 0) {
Willy Tarreauf161a342007-04-08 16:59:42 +0200[diff] [blame]3205 //EV_FD_CLR(t->srv_fd, DIR_RD);
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3206 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3207 fd_delete(t->srv_fd);
3208 if (t->srv)
3209 t->srv->cur_sess--;
3210 //close(t->srv_fd);
3211 t->srv_state = SV_STCLOSE;
3212 if (!(t->flags & SN_ERR_MASK))
3213 t->flags |= SN_ERR_SRVTO;
3214 if (!(t->flags & SN_FINST_MASK))
3215 t->flags |= SN_FINST_D;
3216 /* We used to have a free connection slot. Since we'll never use it,
3217 * we have to inform the server that it may be used by another session.
3218 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3219 if (may_dequeue_tasks(t->srv, t->be))
Willy Tarreau96bcfd72007-04-29 10:41:56 +0200[diff] [blame]3220 task_wakeup(t->srv->queue_mgt);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3221
3222 return 1;
3223 }
3224 else if (rep->l == BUFSIZE) { /* no room to read more data */
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3225 if (EV_FD_COND_C(t->srv_fd, DIR_RD)) {
Willy Tarreaud7971282006-07-29 18:36:34 +0200[diff] [blame]3226 tv_eternity(&rep->rex);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3227 }
3228 }
3229 else {
Willy Tarreau66319382007-04-08 17:17:37 +0200[diff] [blame]3230 if (EV_FD_COND_S(t->srv_fd, DIR_RD)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3231 if (t->be->srvtimeout)
3232 tv_delayfrom(&rep->rex, &now, t->be->srvtimeout);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3233 else
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 return 0;
3238 }
3239 else { /* SV_STCLOSE : nothing to do */
3240 if ((global.mode & MODE_DEBUG) && (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
3241 int len;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3242 len = sprintf(trash, "%08x:%s.srvcls[%04x:%04x]\n",
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3243 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]3244 write(1, trash, len);
3245 }
3246 return 0;
3247 }
3248 return 0;
3249}
3250
3251
3252/*
3253 * Produces data for the session <s> depending on its source. Expects to be
3254 * called with s->cli_state == CL_STSHUTR. Right now, only statistics can be
3255 * produced. It stops by itself by unsetting the SN_SELF_GEN flag from the
3256 * session, which it uses to keep on being called when there is free space in
3257 * the buffer, of simply by letting an empty buffer upon return. It returns 1
3258 * if it changes the session state from CL_STSHUTR, otherwise 0.
3259 */
3260int produce_content(struct session *s)
3261{
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3262 if (s->data_source == DATA_SRC_NONE) {
3263 s->flags &= ~SN_SELF_GEN;
3264 return 1;
3265 }
3266 else if (s->data_source == DATA_SRC_STATS) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3267 /* dump server statistics */
3268 return produce_content_stats(s);
3269 }
3270 else {
3271 /* unknown data source */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3272 s->txn.status = 500;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3273 client_retnclose(s, error_message(s, HTTP_ERR_500));
3274 if (!(s->flags & SN_ERR_MASK))
3275 s->flags |= SN_ERR_PRXCOND;
3276 if (!(s->flags & SN_FINST_MASK))
3277 s->flags |= SN_FINST_R;
3278 s->flags &= ~SN_SELF_GEN;
3279 return 1;
3280 }
3281}
3282
3283
3284/*
3285 * Produces statistics data for the session <s>. Expects to be called with
3286 * s->cli_state == CL_STSHUTR. It stops by itself by unsetting the SN_SELF_GEN
3287 * flag from the session, which it uses to keep on being called when there is
3288 * free space in the buffer, of simply by letting an empty buffer upon return.
3289 * It returns 1 if it changes the session state from CL_STSHUTR, otherwise 0.
3290 */
3291int produce_content_stats(struct session *s)
3292{
3293 struct buffer *rep = s->rep;
3294 struct proxy *px;
3295 struct chunk msg;
3296 unsigned int up;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3297
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3298 msg.len = 0;
3299 msg.str = trash;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3300
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3301 switch (s->data_state) {
3302 case DATA_ST_INIT:
3303 /* the function had not been called yet */
3304 s->flags |= SN_SELF_GEN; // more data will follow
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3305
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3306 chunk_printf(&msg, sizeof(trash),
3307 "HTTP/1.0 200 OK\r\n"
3308 "Cache-Control: no-cache\r\n"
3309 "Connection: close\r\n"
3310 "Content-Type: text/html\r\n"
3311 "\r\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3312
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3313 s->txn.status = 200;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3314 client_retnclose(s, &msg); // send the start of the response.
3315 msg.len = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3316
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3317 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
3318 s->flags |= SN_ERR_PRXCOND; // to mark that it comes from the proxy
3319 if (!(s->flags & SN_FINST_MASK))
3320 s->flags |= SN_FINST_R;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3321
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]3322 if (s->txn.meth == HTTP_METH_HEAD) {
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]3323 /* that's all we return in case of HEAD request */
3324 s->data_state = DATA_ST_FIN;
3325 s->flags &= ~SN_SELF_GEN;
3326 return 1;
3327 }
3328
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3329 s->data_state = DATA_ST_HEAD; /* let's start producing data */
3330 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3331
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3332 case DATA_ST_HEAD:
3333 /* WARNING! This must fit in the first buffer !!! */
3334 chunk_printf(&msg, sizeof(trash),
3335 "<html><head><title>Statistics Report for " PRODUCT_NAME "</title>\n"
3336 "<meta http-equiv=\"content-type\" content=\"text/html; charset=iso-8859-1\">\n"
3337 "<style type=\"text/css\"><!--\n"
3338 "body {"
3339 " font-family: helvetica, arial;"
3340 " font-size: 12px;"
3341 " font-weight: normal;"
3342 " color: black;"
3343 " background: white;"
3344 "}\n"
3345 "th,td {"
3346 " font-size: 0.8em;"
3347 " align: center;"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3348 "}\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3349 "h1 {"
3350 " font-size: xx-large;"
3351 " margin-bottom: 0.5em;"
3352 "}\n"
3353 "h2 {"
3354 " font-family: helvetica, arial;"
3355 " font-size: x-large;"
3356 " font-weight: bold;"
3357 " font-style: italic;"
3358 " color: #6020a0;"
3359 " margin-top: 0em;"
3360 " margin-bottom: 0em;"
3361 "}\n"
3362 "h3 {"
3363 " font-family: helvetica, arial;"
3364 " font-size: 16px;"
3365 " font-weight: bold;"
3366 " color: #b00040;"
3367 " background: #e8e8d0;"
3368 " margin-top: 0em;"
3369 " margin-bottom: 0em;"
3370 "}\n"
3371 "li {"
3372 " margin-top: 0.25em;"
3373 " margin-right: 2em;"
3374 "}\n"
3375 ".hr {margin-top: 0.25em;"
3376 " border-color: black;"
3377 " border-bottom-style: solid;"
3378 "}\n"
3379 ".pxname {background: #b00040;color: #ffff40;font-weight: bold;}\n"
3380 ".titre {background: #20D0D0;color: #000000;font-weight: bold;}\n"
3381 ".total {background: #20D0D0;color: #ffff80;}\n"
3382 ".frontend {background: #e8e8d0;}\n"
3383 ".backend {background: #e8e8d0;}\n"
3384 ".active0 {background: #ff9090;}\n"
3385 ".active1 {background: #ffd020;}\n"
3386 ".active2 {background: #ffffa0;}\n"
3387 ".active3 {background: #c0ffc0;}\n"
3388 ".active4 {background: #e0e0e0;}\n"
3389 ".backup0 {background: #ff9090;}\n"
3390 ".backup1 {background: #ff80ff;}\n"
3391 ".backup2 {background: #c060ff;}\n"
3392 ".backup3 {background: #b0d0ff;}\n"
3393 ".backup4 {background: #e0e0e0;}\n"
3394 "table.tbl { border-collapse: collapse; border-style: none;}\n"
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3395 "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]3396 "table.tbl th { border-width: 1px; border-style: solid solid solid solid; border-color: gray;}\n"
3397 "table.tbl th.empty { border-style: none; empty-cells: hide;}\n"
3398 "table.lgd { border-collapse: collapse; border-width: 1px; border-style: none none none solid; border-color: black;}\n"
3399 "table.lgd td { border-width: 1px; border-style: solid solid solid solid; border-color: gray; padding: 2px;}\n"
3400 "table.lgd td.noborder { border-style: none; padding: 2px; white-space: nowrap;}\n"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3401 "-->\n"
3402 "</style></head>\n");
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3403
3404 if (buffer_write_chunk(rep, &msg) != 0)
3405 return 0;
3406
3407 s->data_state = DATA_ST_INFO;
3408 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3409
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3410 case DATA_ST_INFO:
3411 up = (now.tv_sec - start_date.tv_sec);
3412
3413 /* WARNING! this has to fit the first packet too.
3414 * We are around 3.5 kB, add adding entries will
3415 * become tricky if we want to support 4kB buffers !
3416 */
3417 chunk_printf(&msg, sizeof(trash),
3418 "<body><h1><a href=\"" PRODUCT_URL "\" style=\"text-decoration: none;\">"
3419 PRODUCT_NAME "</a></h1>\n"
3420 "<h2>Statistics Report for pid %d</h2>\n"
3421 "<hr width=\"100%%\" class=\"hr\">\n"
3422 "<h3>&gt; General process information</h3>\n"
3423 "<table border=0 cols=3><tr><td align=\"left\" nowrap width=\"1%%\">\n"
3424 "<p><b>pid = </b> %d (nbproc = %d)<br>\n"
3425 "<b>uptime = </b> %dd %dh%02dm%02ds<br>\n"
3426 "<b>system limits :</b> memmax = %s%s ; ulimit-n = %d<br>\n"
3427 "<b>maxsock = </b> %d<br>\n"
3428 "<b>maxconn = </b> %d (current conns = %d)<br>\n"
3429 "</td><td align=\"center\" nowrap>\n"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3430 "<table class=\"lgd\"><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3431 "<td class=\"active3\">&nbsp;</td><td class=\"noborder\">active UP </td>"
3432 "<td class=\"backup3\">&nbsp;</td><td class=\"noborder\">backup UP </td>"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3433 "</tr><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3434 "<td class=\"active2\"></td><td class=\"noborder\">active UP, going down </td>"
3435 "<td class=\"backup2\"></td><td class=\"noborder\">backup UP, going down </td>"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3436 "</tr><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3437 "<td class=\"active1\"></td><td class=\"noborder\">active DOWN, going up </td>"
3438 "<td class=\"backup1\"></td><td class=\"noborder\">backup DOWN, going up </td>"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3439 "</tr><tr>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3440 "<td class=\"active0\"></td><td class=\"noborder\">active or backup DOWN &nbsp;</td>"
3441 "<td class=\"active4\"></td><td class=\"noborder\">not checked </td>"
3442 "</tr></table>\n"
3443 "</td>"
3444 "<td align=\"left\" nowrap width=\"1%%\">"
Willy Tarreauf2b74c22007-03-25 22:44:08 +0200[diff] [blame]3445 "<b>External ressources:</b><ul style=\"margin-top: 0.25em;\">\n"
3446 "<li><a href=\"" PRODUCT_URL "\">Primary site</a><br>\n"
3447 "<li><a href=\"" PRODUCT_URL_UPD "\">Updates (v" PRODUCT_BRANCH ")</a><br>\n"
3448 "<li><a href=\"" PRODUCT_URL_DOC "\">Online manual</a><br>\n"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3449 "</ul>"
3450 "</td>"
3451 "</tr></table>\n"
3452 "",
3453 pid, pid, global.nbproc,
3454 up / 86400, (up % 86400) / 3600,
3455 (up % 3600) / 60, (up % 60),
3456 global.rlimit_memmax ? ultoa(global.rlimit_memmax) : "unlimited",
3457 global.rlimit_memmax ? " MB" : "",
3458 global.rlimit_nofile,
3459 global.maxsock,
3460 global.maxconn,
3461 actconn
3462 );
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3463
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3464 if (buffer_write_chunk(rep, &msg) != 0)
3465 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3466
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3467 memset(&s->data_ctx, 0, sizeof(s->data_ctx));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3468
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3469 s->data_ctx.stats.px = proxy;
3470 s->data_ctx.stats.px_st = DATA_ST_PX_INIT;
3471 s->data_state = DATA_ST_LIST;
3472 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3473
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3474 case DATA_ST_LIST:
3475 /* dump proxies */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3476 while (s->data_ctx.stats.px) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3477 px = s->data_ctx.stats.px;
3478 /* skip the disabled proxies and non-networked ones */
3479 if (px->state != PR_STSTOPPED && (px->cap & (PR_CAP_FE | PR_CAP_BE)))
3480 if (produce_content_stats_proxy(s, px) == 0)
3481 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3482
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3483 s->data_ctx.stats.px = px->next;
3484 s->data_ctx.stats.px_st = DATA_ST_PX_INIT;
3485 }
3486 /* here, we just have reached the last proxy */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3487
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3488 s->data_state = DATA_ST_END;
3489 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3490
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3491 case DATA_ST_END:
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]3492 chunk_printf(&msg, sizeof(trash), "</body></html>\n");
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3493 if (buffer_write_chunk(rep, &msg) != 0)
3494 return 0;
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_FIN;
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_FIN:
3500 s->flags &= ~SN_SELF_GEN;
3501 return 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3502
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3503 default:
3504 /* unknown state ! */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]3505 s->txn.status = 500;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3506 client_retnclose(s, error_message(s, HTTP_ERR_500));
3507 if (!(s->flags & SN_ERR_MASK))
3508 s->flags |= SN_ERR_PRXCOND;
3509 if (!(s->flags & SN_FINST_MASK))
3510 s->flags |= SN_FINST_R;
3511 s->flags &= ~SN_SELF_GEN;
3512 return 1;
3513 }
3514}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3515
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3516
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3517/*
3518 * Dumps statistics for a proxy.
3519 * Returns 0 if it had to stop dumping data because of lack of buffer space,
3520 * ot non-zero if everything completed.
3521 */
3522int produce_content_stats_proxy(struct session *s, struct proxy *px)
3523{
3524 struct buffer *rep = s->rep;
3525 struct server *sv;
3526 struct chunk msg;
3527
3528 msg.len = 0;
3529 msg.str = trash;
3530
3531 switch (s->data_ctx.stats.px_st) {
3532 case DATA_ST_PX_INIT:
3533 /* we are on a new proxy */
3534
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3535 if (s->be->uri_auth && s->be->uri_auth->scope) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3536 /* we have a limited scope, we have to check the proxy name */
3537 struct stat_scope *scope;
3538 int len;
3539
3540 len = strlen(px->id);
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3541 scope = s->be->uri_auth->scope;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3542
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3543 while (scope) {
3544 /* match exact proxy name */
3545 if (scope->px_len == len && !memcmp(px->id, scope->px_id, len))
3546 break;
3547
3548 /* match '.' which means 'self' proxy */
3549 if (!strcmp(scope->px_id, ".") && px == s->fe)
3550 break;
3551 scope = scope->next;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3552 }
3553
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3554 /* proxy name not found : don't dump anything */
3555 if (scope == NULL)
3556 return 1;
3557 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3558
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3559 s->data_ctx.stats.px_st = DATA_ST_PX_TH;
3560 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3561
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3562 case DATA_ST_PX_TH:
3563 /* print a new table */
3564 chunk_printf(&msg, sizeof(trash),
3565 "<table cols=\"20\" class=\"tbl\" width=\"100%%\">\n"
3566 "<tr align=\"center\" class=\"titre\">"
3567 "<th colspan=2 class=\"pxname\">%s</th>"
3568 "<th colspan=18 class=\"empty\"></th>"
3569 "</tr>\n"
3570 "<tr align=\"center\" class=\"titre\">"
3571 "<th rowspan=2></th>"
3572 "<th colspan=2>Queue</th><th colspan=4>Sessions</th>"
3573 "<th colspan=2>Bytes</th><th colspan=2>Denied</th>"
3574 "<th colspan=3>Errors</th><th colspan=6>Server</th>"
3575 "</tr>\n"
3576 "<tr align=\"center\" class=\"titre\">"
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3577 "<th>Cur</th><th>Max</th><th>Cur</th><th>Max</th>"
3578 "<th>Limit</th><th>Cumul</th><th>In</th><th>Out</th>"
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3579 "<th>Req</th><th>Resp</th><th>Req</th><th>Conn</th>"
3580 "<th>Resp</th><th>Status</th><th>Weight</th><th>Act</th>"
3581 "<th>Bck</th><th>Check</th><th>Down</th></tr>\n"
3582 "",
3583 px->id);
3584
3585 if (buffer_write_chunk(rep, &msg) != 0)
3586 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3587
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3588 s->data_ctx.stats.px_st = DATA_ST_PX_FE;
3589 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3590
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3591 case DATA_ST_PX_FE:
3592 /* print the frontend */
3593 if (px->cap & PR_CAP_FE) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3594 chunk_printf(&msg, sizeof(trash),
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3595 /* name, queue */
3596 "<tr align=center class=\"frontend\"><td>Frontend</td><td colspan=2></td>"
3597 /* sessions : current, max, limit, cumul. */
3598 "<td align=right>%d</td><td align=right>%d</td><td align=right>%d</td><td align=right>%d</td>"
3599 /* bytes : in, out */
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3600 "<td align=right>%lld</td><td align=right>%lld</td>"
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3601 /* denied: req, resp */
3602 "<td align=right>%d</td><td align=right>%d</td>"
3603 /* errors : request, connect, response */
3604 "<td align=right>%d</td><td align=right></td><td align=right></td>"
3605 /* server status : reflect backend status */
3606 "<td align=center>%s</td>"
3607 /* rest of server: nothing */
3608 "<td align=center colspan=5></td></tr>"
3609 "",
3610 px->feconn, px->feconn_max, px->maxconn, px->cum_feconn,
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3611 px->bytes_in, px->bytes_out,
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3612 px->denied_req, px->denied_resp,
3613 px->failed_req,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3614 px->state == PR_STRUN ? "OPEN" :
3615 px->state == PR_STIDLE ? "FULL" : "STOP");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3616
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3617 if (buffer_write_chunk(rep, &msg) != 0)
3618 return 0;
3619 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3620
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3621 s->data_ctx.stats.sv = px->srv; /* may be NULL */
3622 s->data_ctx.stats.px_st = DATA_ST_PX_SV;
3623 /* fall through */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3624
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3625 case DATA_ST_PX_SV:
3626 /* stats.sv has been initialized above */
3627 while (s->data_ctx.stats.sv != NULL) {
3628 static char *srv_hlt_st[5] = { "DOWN", "DN %d/%d &uarr;", "UP %d/%d &darr;", "UP", "<i>no check</i>" };
3629 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]3630
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3631 sv = s->data_ctx.stats.sv;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3632
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3633 /* FIXME: produce some small strings for "UP/DOWN x/y &#xxxx;" */
3634 if (!(sv->state & SRV_CHECKED))
3635 sv_state = 4;
3636 else if (sv->state & SRV_RUNNING)
3637 if (sv->health == sv->rise + sv->fall - 1)
3638 sv_state = 3; /* UP */
3639 else
3640 sv_state = 2; /* going down */
3641 else
3642 if (sv->health)
3643 sv_state = 1; /* going up */
3644 else
3645 sv_state = 0; /* DOWN */
3646
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3647 chunk_printf(&msg, sizeof(trash),
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3648 /* name */
3649 "<tr align=\"center\" class=\"%s%d\"><td>%s</td>"
3650 /* queue : current, max */
3651 "<td align=right>%d</td><td align=right>%d</td>"
3652 /* sessions : current, max, limit, cumul */
3653 "<td align=right>%d</td><td align=right>%d</td><td align=right>%s</td><td align=right>%d</td>"
3654 /* bytes : in, out */
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3655 "<td align=right>%lld</td><td align=right>%lld</td>"
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3656 /* denied: req, resp */
3657 "<td align=right></td><td align=right>%d</td>"
3658 /* errors : request, connect, response */
3659 "<td align=right></td><td align=right>%d</td><td align=right>%d</td>\n"
3660 "",
Willy Tarreau368e96a2007-01-07 00:16:15 +0100[diff] [blame]3661 (sv->state & SRV_BACKUP) ? "backup" : "active",
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3662 sv_state, sv->id,
3663 sv->nbpend, sv->nbpend_max,
3664 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]3665 sv->bytes_in, sv->bytes_out,
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3666 sv->failed_secu,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3667 sv->failed_conns, sv->failed_resp);
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3668
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3669 /* status */
3670 chunk_printf(&msg, sizeof(trash), "<td nowrap>");
3671 chunk_printf(&msg, sizeof(trash),
3672 srv_hlt_st[sv_state],
3673 (sv->state & SRV_RUNNING) ? (sv->health - sv->rise + 1) : (sv->health),
3674 (sv->state & SRV_RUNNING) ? (sv->fall) : (sv->rise));
3675
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3676 chunk_printf(&msg, sizeof(trash),
3677 /* weight */
3678 "</td><td>%d</td>"
3679 /* act, bck */
3680 "<td>%s</td><td>%s</td>"
3681 "",
Willy Tarreau417fae02007-03-25 21:16:40 +0200[diff] [blame]3682 sv->uweight,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3683 (sv->state & SRV_BACKUP) ? "-" : "Y",
3684 (sv->state & SRV_BACKUP) ? "Y" : "-");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3685
3686 /* check failures : unique, fatal */
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3687 if (sv->state & SRV_CHECKED)
3688 chunk_printf(&msg, sizeof(trash),
3689 "<td align=right>%d</td><td align=right>%d</td></tr>\n",
3690 sv->failed_checks, sv->down_trans);
3691 else
3692 chunk_printf(&msg, sizeof(trash),
3693 "<td colspan=2></td></tr>\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3694
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3695 if (buffer_write_chunk(rep, &msg) != 0)
3696 return 0;
3697
3698 s->data_ctx.stats.sv = sv->next;
3699 } /* while sv */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3700
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3701 s->data_ctx.stats.px_st = DATA_ST_PX_BE;
3702 /* fall through */
3703
3704 case DATA_ST_PX_BE:
3705 /* print the backend */
3706 if (px->cap & PR_CAP_BE) {
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3707 chunk_printf(&msg, sizeof(trash),
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3708 /* name */
3709 "<tr align=center class=\"backend\"><td>Backend</td>"
3710 /* queue : current, max */
3711 "<td align=right>%d</td><td align=right>%d</td>"
3712 /* sessions : current, max, limit, cumul. */
3713 "<td align=right>%d</td><td align=right>%d</td><td align=right>%d</td><td align=right>%d</td>"
3714 /* bytes : in, out */
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3715 "<td align=right>%lld</td><td align=right>%lld</td>"
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3716 /* denied: req, resp */
3717 "<td align=right>%d</td><td align=right>%d</td>"
3718 /* errors : request, connect, response */
3719 "<td align=right></td><td align=right>%d</td><td align=right>%d</td>\n"
3720 /* server status : reflect backend status (up/down) : we display UP
3721 * if the backend has known working servers or if it has no server at
3722 * all (eg: for stats). Tthen we display the total weight, number of
3723 * active and backups. */
3724 "<td align=center>%s</td><td align=center>%d</td>"
3725 "<td align=center>%d</td><td align=center>%d</td>"
3726 /* rest of server: nothing */
3727 "<td align=center colspan=2></td></tr>"
3728 "",
3729 px->nbpend /* or px->totpend ? */, px->nbpend_max,
3730 px->beconn, px->beconn_max, px->fullconn, px->cum_beconn,
Willy Tarreau35d66b02007-01-02 00:28:21 +0100[diff] [blame]3731 px->bytes_in, px->bytes_out,
Willy Tarreau128e9542007-01-01 22:01:43 +0100[diff] [blame]3732 px->denied_req, px->denied_resp,
3733 px->failed_conns, px->failed_resp,
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3734 (px->srv_map_sz > 0 || !px->srv) ? "UP" : "DOWN",
3735 px->srv_map_sz, px->srv_act, px->srv_bck);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3736
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3737 if (buffer_write_chunk(rep, &msg) != 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3738 return 0;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3739 }
3740
3741 s->data_ctx.stats.px_st = DATA_ST_PX_END;
3742 /* fall through */
3743
3744 case DATA_ST_PX_END:
3745 chunk_printf(&msg, sizeof(trash), "</table><p>\n");
3746
3747 if (buffer_write_chunk(rep, &msg) != 0)
3748 return 0;
3749
3750 s->data_ctx.stats.px_st = DATA_ST_PX_FIN;
3751 /* fall through */
3752
3753 case DATA_ST_PX_FIN:
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3754 return 1;
Willy Tarreauc0dde7a2007-01-01 21:38:07 +0100[diff] [blame]3755
3756 default:
3757 /* unknown state, we should put an abort() here ! */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3758 return 1;
3759 }
3760}
3761
3762
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3763/* Iterate the same filter through all request headers.
3764 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3765 * Since it can manage the switch to another backend, it updates the per-proxy
3766 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3767 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3768int 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]3769{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3770 char term;
3771 char *cur_ptr, *cur_end, *cur_next;
3772 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3773 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3774 struct hdr_idx_elem *cur_hdr;
3775 int len, delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]3776
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3777 last_hdr = 0;
3778
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3779 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3780 old_idx = 0;
3781
3782 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3783 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3784 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3785 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3786 (exp->action == ACT_ALLOW ||
3787 exp->action == ACT_DENY ||
3788 exp->action == ACT_TARPIT))
3789 return 0;
3790
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3791 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3792 if (!cur_idx)
3793 break;
3794
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3795 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3796 cur_ptr = cur_next;
3797 cur_end = cur_ptr + cur_hdr->len;
3798 cur_next = cur_end + cur_hdr->cr + 1;
3799
3800 /* Now we have one header between cur_ptr and cur_end,
3801 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3802 */
3803
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3804 /* The annoying part is that pattern matching needs
3805 * that we modify the contents to null-terminate all
3806 * strings before testing them.
3807 */
3808
3809 term = *cur_end;
3810 *cur_end = '\0';
3811
3812 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3813 switch (exp->action) {
3814 case ACT_SETBE:
3815 /* It is not possible to jump a second time.
3816 * FIXME: should we return an HTTP/500 here so that
3817 * the admin knows there's a problem ?
3818 */
3819 if (t->be != t->fe)
3820 break;
3821
3822 /* Swithing Proxy */
3823 t->be = (struct proxy *) exp->replace;
3824
3825 /* right now, the backend switch is not too much complicated
3826 * because we have associated req_cap and rsp_cap to the
3827 * frontend, and the beconn will be updated later.
3828 */
3829
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3830 t->rep->rto = t->req->wto = t->be->srvtimeout;
3831 t->req->cto = t->be->contimeout;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3832 last_hdr = 1;
3833 break;
3834
3835 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3836 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3837 last_hdr = 1;
3838 break;
3839
3840 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3841 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3842 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3843 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3844 break;
3845
3846 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3847 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3848 last_hdr = 1;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3849 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3850 break;
3851
3852 case ACT_REPLACE:
3853 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3854 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3855 /* FIXME: if the user adds a newline in the replacement, the
3856 * index will not be recalculated for now, and the new line
3857 * will not be counted as a new header.
3858 */
3859
3860 cur_end += delta;
3861 cur_next += delta;
3862 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3863 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3864 break;
3865
3866 case ACT_REMOVE:
3867 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
3868 cur_next += delta;
3869
3870 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3871 txn->req.eoh += delta;
3872 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
3873 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3874 cur_hdr->len = 0;
3875 cur_end = NULL; /* null-term has been rewritten */
3876 break;
3877
3878 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3879 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3880 if (cur_end)
3881 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3882
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3883 /* keep the link from this header to next one in case of later
3884 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3885 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3886 old_idx = cur_idx;
3887 }
3888 return 0;
3889}
3890
3891
3892/* Apply the filter to the request line.
3893 * Returns 0 if nothing has been done, 1 if the filter has been applied,
3894 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]3895 * Since it can manage the switch to another backend, it updates the per-proxy
3896 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3897 */
3898int apply_filter_to_req_line(struct session *t, struct buffer *req, struct hdr_exp *exp)
3899{
3900 char term;
3901 char *cur_ptr, *cur_end;
3902 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3903 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3904 int len, delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3905
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3906
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3907 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3908 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3909 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3910 (exp->action == ACT_ALLOW ||
3911 exp->action == ACT_DENY ||
3912 exp->action == ACT_TARPIT))
3913 return 0;
3914 else if (exp->action == ACT_REMOVE)
3915 return 0;
3916
3917 done = 0;
3918
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3919 cur_ptr = req->data + txn->req.som;
3920 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3921
3922 /* Now we have the request line between cur_ptr and cur_end */
3923
3924 /* The annoying part is that pattern matching needs
3925 * that we modify the contents to null-terminate all
3926 * strings before testing them.
3927 */
3928
3929 term = *cur_end;
3930 *cur_end = '\0';
3931
3932 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
3933 switch (exp->action) {
3934 case ACT_SETBE:
3935 /* It is not possible to jump a second time.
3936 * FIXME: should we return an HTTP/500 here so that
3937 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3938 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3939 if (t->be != t->fe)
3940 break;
3941
3942 /* Swithing Proxy */
3943 t->be = (struct proxy *) exp->replace;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3944
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3945 /* right now, the backend switch is not too much complicated
3946 * because we have associated req_cap and rsp_cap to the
3947 * frontend, and the beconn will be updated later.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3948 */
3949
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3950 t->rep->rto = t->req->wto = t->be->srvtimeout;
3951 t->req->cto = t->be->contimeout;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3952 done = 1;
3953 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3954
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3955 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3956 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3957 done = 1;
3958 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3959
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3960 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3961 txn->flags |= TX_CLDENY;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3962 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3963 done = 1;
3964 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3965
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3966 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]3967 txn->flags |= TX_CLTARPIT;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]3968 t->be->denied_req++;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3969 done = 1;
3970 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3971
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3972 case ACT_REPLACE:
3973 *cur_end = term; /* restore the string terminator */
3974 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
3975 delta = buffer_replace2(req, cur_ptr, cur_end, trash, len);
3976 /* FIXME: if the user adds a newline in the replacement, the
3977 * index will not be recalculated for now, and the new line
3978 * will not be counted as a new header.
3979 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3980
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3981 txn->req.eoh += delta;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3982 cur_end += delta;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3983
Willy Tarreaua9bd1982007-04-03 20:03:18 +0200[diff] [blame]3984 txn->req.sol = req->data + txn->req.som;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3985 cur_end = (char *)http_parse_reqline(&txn->req, req->data,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3986 HTTP_MSG_RQMETH,
3987 cur_ptr, cur_end + 1,
3988 NULL, NULL);
3989 if (unlikely(!cur_end))
3990 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]3991
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]3992 /* we have a full request and we know that we have either a CR
3993 * or an LF at <ptr>.
3994 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]3995 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
3996 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]3997 /* there is no point trying this regex on headers */
3998 return 1;
3999 }
4000 }
4001 *cur_end = term; /* restore the string terminator */
4002 return done;
4003}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]4004
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4005
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4006
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4007/*
4008 * Apply all the req filters <exp> to all headers in buffer <req> of session <t>.
4009 * 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]4010 * unparsable request. Since it can manage the switch to another backend, it
4011 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4012 */
4013int apply_filters_to_request(struct session *t, struct buffer *req, struct hdr_exp *exp)
4014{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4015 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4016 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4017 while (exp && !(txn->flags & (TX_CLDENY|TX_CLTARPIT))) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4018 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4019
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4020 /*
4021 * The interleaving of transformations and verdicts
4022 * makes it difficult to decide to continue or stop
4023 * the evaluation.
4024 */
4025
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4026 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4027 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4028 exp->action == ACT_TARPIT || exp->action == ACT_PASS)) {
4029 exp = exp->next;
4030 continue;
4031 }
4032
4033 /* Apply the filter to the request line. */
4034 ret = apply_filter_to_req_line(t, req, exp);
4035 if (unlikely(ret < 0))
4036 return -1;
4037
4038 if (likely(ret == 0)) {
4039 /* The filter did not match the request, it can be
4040 * iterated through all headers.
4041 */
4042 apply_filter_to_req_headers(t, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4043 }
4044 exp = exp->next;
4045 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4046 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4047}
4048
4049
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4050
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4051/*
4052 * Manager client-side cookie
4053 */
4054void manage_client_side_cookies(struct session *t, struct buffer *req)
4055{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4056 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4057 char *p1, *p2, *p3, *p4;
4058 char *del_colon, *del_cookie, *colon;
4059 int app_cookies;
4060
4061 appsess *asession_temp = NULL;
4062 appsess local_asession;
4063
4064 char *cur_ptr, *cur_end, *cur_next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4065 int cur_idx, old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4066
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4067 if (t->be->cookie_name == NULL &&
4068 t->be->appsession_name == NULL &&
4069 t->be->capture_name == NULL)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4070 return;
4071
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4072 /* Iterate through the headers.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4073 * we start with the start line.
4074 */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]4075 old_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4076 cur_next = req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4077
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4078 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4079 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4080 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4081
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4082 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4083 cur_ptr = cur_next;
4084 cur_end = cur_ptr + cur_hdr->len;
4085 cur_next = cur_end + cur_hdr->cr + 1;
4086
4087 /* We have one full header between cur_ptr and cur_end, and the
4088 * next header starts at cur_next. We're only interested in
4089 * "Cookie:" headers.
4090 */
4091
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4092 val = http_header_match2(cur_ptr, cur_end, "Cookie", 6);
4093 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4094 old_idx = cur_idx;
4095 continue;
4096 }
4097
4098 /* Now look for cookies. Conforming to RFC2109, we have to support
4099 * attributes whose name begin with a '$', and associate them with
4100 * the right cookie, if we want to delete this cookie.
4101 * So there are 3 cases for each cookie read :
4102 * 1) it's a special attribute, beginning with a '$' : ignore it.
4103 * 2) it's a server id cookie that we *MAY* want to delete : save
4104 * some pointers on it (last semi-colon, beginning of cookie...)
4105 * 3) it's an application cookie : we *MAY* have to delete a previous
4106 * "special" cookie.
4107 * At the end of loop, if a "special" cookie remains, we may have to
4108 * remove it. If no application cookie persists in the header, we
4109 * *MUST* delete it
4110 */
4111
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4112 colon = p1 = cur_ptr + val; /* first non-space char after 'Cookie:' */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4113
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4114 /* del_cookie == NULL => nothing to be deleted */
4115 del_colon = del_cookie = NULL;
4116 app_cookies = 0;
4117
4118 while (p1 < cur_end) {
4119 /* skip spaces and colons, but keep an eye on these ones */
4120 while (p1 < cur_end) {
4121 if (*p1 == ';' || *p1 == ',')
4122 colon = p1;
4123 else if (!isspace((int)*p1))
4124 break;
4125 p1++;
4126 }
4127
4128 if (p1 == cur_end)
4129 break;
4130
4131 /* p1 is at the beginning of the cookie name */
4132 p2 = p1;
4133 while (p2 < cur_end && *p2 != '=')
4134 p2++;
4135
4136 if (p2 == cur_end)
4137 break;
4138
4139 p3 = p2 + 1; /* skips the '=' sign */
4140 if (p3 == cur_end)
4141 break;
4142
4143 p4 = p3;
4144 while (p4 < cur_end && !isspace((int)*p4) && *p4 != ';' && *p4 != ',')
4145 p4++;
4146
4147 /* here, we have the cookie name between p1 and p2,
4148 * and its value between p3 and p4.
4149 * we can process it :
4150 *
4151 * Cookie: NAME=VALUE;
4152 * | || || |
4153 * | || || +--> p4
4154 * | || |+-------> p3
4155 * | || +--------> p2
4156 * | |+------------> p1
4157 * | +-------------> colon
4158 * +--------------------> cur_ptr
4159 */
4160
4161 if (*p1 == '$') {
4162 /* skip this one */
4163 }
4164 else {
4165 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4166 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4167 txn->cli_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4168 (p4 - p1 >= t->fe->capture_namelen) &&
4169 memcmp(p1, t->fe->capture_name, t->fe->capture_namelen) == 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4170 int log_len = p4 - p1;
4171
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4172 if ((txn->cli_cookie = pool_alloc(capture)) == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4173 Alert("HTTP logging : out of memory.\n");
4174 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4175 if (log_len > t->fe->capture_len)
4176 log_len = t->fe->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4177 memcpy(txn->cli_cookie, p1, log_len);
4178 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4179 }
4180 }
4181
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4182 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4183 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4184 /* Cool... it's the right one */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4185 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4186 char *delim;
4187
4188 /* if we're in cookie prefix mode, we'll search the delimitor so that we
4189 * have the server ID betweek p3 and delim, and the original cookie between
4190 * delim+1 and p4. Otherwise, delim==p4 :
4191 *
4192 * Cookie: NAME=SRV~VALUE;
4193 * | || || | |
4194 * | || || | +--> p4
4195 * | || || +--------> delim
4196 * | || |+-----------> p3
4197 * | || +------------> p2
4198 * | |+----------------> p1
4199 * | +-----------------> colon
4200 * +------------------------> cur_ptr
4201 */
4202
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4203 if (t->be->options & PR_O_COOK_PFX) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4204 for (delim = p3; delim < p4; delim++)
4205 if (*delim == COOKIE_DELIM)
4206 break;
4207 }
4208 else
4209 delim = p4;
4210
4211
4212 /* Here, we'll look for the first running server which supports the cookie.
4213 * This allows to share a same cookie between several servers, for example
4214 * to dedicate backup servers to specific servers only.
4215 * However, to prevent clients from sticking to cookie-less backup server
4216 * when they have incidentely learned an empty cookie, we simply ignore
4217 * empty cookies and mark them as invalid.
4218 */
4219 if (delim == p3)
4220 srv = NULL;
4221
4222 while (srv) {
Willy Tarreau92f2ab12007-02-02 22:14:47 +0100[diff] [blame]4223 if (srv->cookie && (srv->cklen == delim - p3) &&
4224 !memcmp(p3, srv->cookie, delim - p3)) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4225 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4226 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4227 txn->flags &= ~TX_CK_MASK;
4228 txn->flags |= TX_CK_VALID;
4229 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4230 t->srv = srv;
4231 break;
4232 } else {
4233 /* we found a server, but it's down */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4234 txn->flags &= ~TX_CK_MASK;
4235 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4236 }
4237 }
4238 srv = srv->next;
4239 }
4240
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4241 if (!srv && !(txn->flags & TX_CK_DOWN)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4242 /* no server matched this cookie */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4243 txn->flags &= ~TX_CK_MASK;
4244 txn->flags |= TX_CK_INVALID;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4245 }
4246
4247 /* depending on the cookie mode, we may have to either :
4248 * - delete the complete cookie if we're in insert+indirect mode, so that
4249 * the server never sees it ;
4250 * - remove the server id from the cookie value, and tag the cookie as an
4251 * application cookie so that it does not get accidentely removed later,
4252 * if we're in cookie prefix mode
4253 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4254 if ((t->be->options & PR_O_COOK_PFX) && (delim != p4)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4255 int delta; /* negative */
4256
4257 delta = buffer_replace2(req, p3, delim + 1, NULL, 0);
4258 p4 += delta;
4259 cur_end += delta;
4260 cur_next += delta;
4261 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4262 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4263
4264 del_cookie = del_colon = NULL;
4265 app_cookies++; /* protect the header from deletion */
4266 }
4267 else if (del_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4268 (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]4269 del_cookie = p1;
4270 del_colon = colon;
4271 }
4272 } else {
4273 /* now we know that we must keep this cookie since it's
4274 * not ours. But if we wanted to delete our cookie
4275 * earlier, we cannot remove the complete header, but we
4276 * can remove the previous block itself.
4277 */
4278 app_cookies++;
4279
4280 if (del_cookie != NULL) {
4281 int delta; /* negative */
4282
4283 delta = buffer_replace2(req, del_cookie, p1, NULL, 0);
4284 p4 += delta;
4285 cur_end += delta;
4286 cur_next += delta;
4287 cur_hdr->len += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4288 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4289 del_cookie = del_colon = NULL;
4290 }
4291 }
4292
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4293 if ((t->be->appsession_name != NULL) &&
4294 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4295 /* first, let's see if the cookie is our appcookie*/
4296
4297 /* Cool... it's the right one */
4298
4299 asession_temp = &local_asession;
4300
4301 if ((asession_temp->sessid = pool_alloc_from(apools.sessid, apools.ses_msize)) == NULL) {
4302 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
4303 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
4304 return;
4305 }
4306
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4307 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4308 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4309 asession_temp->serverid = NULL;
4310
4311 /* only do insert, if lookup fails */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4312 if (chtbl_lookup(&(t->be->htbl_proxy), (void *) &asession_temp) != 0) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4313 if ((asession_temp = pool_alloc(appsess)) == NULL) {
4314 /* free previously allocated memory */
4315 pool_free_to(apools.sessid, local_asession.sessid);
4316 Alert("Not enough memory process_cli():asession:calloc().\n");
4317 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4318 return;
4319 }
4320
4321 asession_temp->sessid = local_asession.sessid;
4322 asession_temp->serverid = local_asession.serverid;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4323 chtbl_insert(&(t->be->htbl_proxy), (void *) asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4324 } else {
4325 /* free previously allocated memory */
4326 pool_free_to(apools.sessid, local_asession.sessid);
4327 }
4328
4329 if (asession_temp->serverid == NULL) {
4330 Alert("Found Application Session without matching server.\n");
4331 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4332 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4333 while (srv) {
4334 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4335 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4336 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4337 txn->flags &= ~TX_CK_MASK;
4338 txn->flags |= TX_CK_VALID;
4339 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4340 t->srv = srv;
4341 break;
4342 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4343 txn->flags &= ~TX_CK_MASK;
4344 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4345 }
4346 }
4347 srv = srv->next;
4348 }/* end while(srv) */
4349 }/* end else if server == NULL */
4350
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4351 tv_delayfrom(&asession_temp->expire, &now, t->be->appsession_timeout);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4352 }/* end if ((t->proxy->appsession_name != NULL) ... */
4353 }
4354
4355 /* we'll have to look for another cookie ... */
4356 p1 = p4;
4357 } /* while (p1 < cur_end) */
4358
4359 /* There's no more cookie on this line.
4360 * We may have marked the last one(s) for deletion.
4361 * We must do this now in two ways :
4362 * - if there is no app cookie, we simply delete the header ;
4363 * - if there are app cookies, we must delete the end of the
4364 * string properly, including the colon/semi-colon before
4365 * the cookie name.
4366 */
4367 if (del_cookie != NULL) {
4368 int delta;
4369 if (app_cookies) {
4370 delta = buffer_replace2(req, del_colon, cur_end, NULL, 0);
4371 cur_end = del_colon;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4372 cur_hdr->len += delta;
4373 } else {
4374 delta = buffer_replace2(req, cur_ptr, cur_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4375
4376 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4377 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4378 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4379 cur_hdr->len = 0;
4380 }
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]4381 cur_next += delta;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]4382 txn->req.eoh += delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4383 }
4384
4385 /* keep the link from this header to next one */
4386 old_idx = cur_idx;
4387 } /* end of cookie processing on this header */
4388}
4389
4390
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4391/* Iterate the same filter through all response headers contained in <rtr>.
4392 * Returns 1 if this filter can be stopped upon return, otherwise 0.
4393 */
4394int apply_filter_to_resp_headers(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4395{
4396 char term;
4397 char *cur_ptr, *cur_end, *cur_next;
4398 int cur_idx, old_idx, last_hdr;
4399 struct http_txn *txn = &t->txn;
4400 struct hdr_idx_elem *cur_hdr;
4401 int len, delta;
4402
4403 last_hdr = 0;
4404
4405 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4406 old_idx = 0;
4407
4408 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4409 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4410 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4411 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4412 (exp->action == ACT_ALLOW ||
4413 exp->action == ACT_DENY))
4414 return 0;
4415
4416 cur_idx = txn->hdr_idx.v[old_idx].next;
4417 if (!cur_idx)
4418 break;
4419
4420 cur_hdr = &txn->hdr_idx.v[cur_idx];
4421 cur_ptr = cur_next;
4422 cur_end = cur_ptr + cur_hdr->len;
4423 cur_next = cur_end + cur_hdr->cr + 1;
4424
4425 /* Now we have one header between cur_ptr and cur_end,
4426 * and the next header starts at cur_next.
4427 */
4428
4429 /* The annoying part is that pattern matching needs
4430 * that we modify the contents to null-terminate all
4431 * strings before testing them.
4432 */
4433
4434 term = *cur_end;
4435 *cur_end = '\0';
4436
4437 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4438 switch (exp->action) {
4439 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4440 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4441 last_hdr = 1;
4442 break;
4443
4444 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4445 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4446 last_hdr = 1;
4447 break;
4448
4449 case ACT_REPLACE:
4450 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4451 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4452 /* FIXME: if the user adds a newline in the replacement, the
4453 * index will not be recalculated for now, and the new line
4454 * will not be counted as a new header.
4455 */
4456
4457 cur_end += delta;
4458 cur_next += delta;
4459 cur_hdr->len += delta;
4460 txn->rsp.eoh += delta;
4461 break;
4462
4463 case ACT_REMOVE:
4464 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4465 cur_next += delta;
4466
4467 /* FIXME: this should be a separate function */
4468 txn->rsp.eoh += delta;
4469 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4470 txn->hdr_idx.used--;
4471 cur_hdr->len = 0;
4472 cur_end = NULL; /* null-term has been rewritten */
4473 break;
4474
4475 }
4476 }
4477 if (cur_end)
4478 *cur_end = term; /* restore the string terminator */
4479
4480 /* keep the link from this header to next one in case of later
4481 * removal of next header.
4482 */
4483 old_idx = cur_idx;
4484 }
4485 return 0;
4486}
4487
4488
4489/* Apply the filter to the status line in the response buffer <rtr>.
4490 * Returns 0 if nothing has been done, 1 if the filter has been applied,
4491 * or -1 if a replacement resulted in an invalid status line.
4492 */
4493int apply_filter_to_sts_line(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4494{
4495 char term;
4496 char *cur_ptr, *cur_end;
4497 int done;
4498 struct http_txn *txn = &t->txn;
4499 int len, delta;
4500
4501
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4502 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4503 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4504 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4505 (exp->action == ACT_ALLOW ||
4506 exp->action == ACT_DENY))
4507 return 0;
4508 else if (exp->action == ACT_REMOVE)
4509 return 0;
4510
4511 done = 0;
4512
4513 cur_ptr = rtr->data + txn->rsp.som;
4514 cur_end = cur_ptr + txn->rsp.sl.rq.l;
4515
4516 /* Now we have the status line between cur_ptr and cur_end */
4517
4518 /* The annoying part is that pattern matching needs
4519 * that we modify the contents to null-terminate all
4520 * strings before testing them.
4521 */
4522
4523 term = *cur_end;
4524 *cur_end = '\0';
4525
4526 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
4527 switch (exp->action) {
4528 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4529 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4530 done = 1;
4531 break;
4532
4533 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4534 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4535 done = 1;
4536 break;
4537
4538 case ACT_REPLACE:
4539 *cur_end = term; /* restore the string terminator */
4540 len = exp_replace(trash, cur_ptr, exp->replace, pmatch);
4541 delta = buffer_replace2(rtr, cur_ptr, cur_end, trash, len);
4542 /* FIXME: if the user adds a newline in the replacement, the
4543 * index will not be recalculated for now, and the new line
4544 * will not be counted as a new header.
4545 */
4546
4547 txn->rsp.eoh += delta;
4548 cur_end += delta;
4549
Willy Tarreaua9bd1982007-04-03 20:03:18 +0200[diff] [blame]4550 txn->rsp.sol = rtr->data + txn->rsp.som;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4551 cur_end = (char *)http_parse_stsline(&txn->rsp, rtr->data,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]4552 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4553 cur_ptr, cur_end + 1,
4554 NULL, NULL);
4555 if (unlikely(!cur_end))
4556 return -1;
4557
4558 /* we have a full respnse and we know that we have either a CR
4559 * or an LF at <ptr>.
4560 */
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4561 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]4562 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.rq.l, *cur_end == '\r');
4563 /* there is no point trying this regex on headers */
4564 return 1;
4565 }
4566 }
4567 *cur_end = term; /* restore the string terminator */
4568 return done;
4569}
4570
4571
4572
4573/*
4574 * Apply all the resp filters <exp> to all headers in buffer <rtr> of session <t>.
4575 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
4576 * unparsable response.
4577 */
4578int apply_filters_to_response(struct session *t, struct buffer *rtr, struct hdr_exp *exp)
4579{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4580 struct http_txn *txn = &t->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4581 /* iterate through the filters in the outer loop */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4582 while (exp && !(txn->flags & TX_SVDENY)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4583 int ret;
4584
4585 /*
4586 * The interleaving of transformations and verdicts
4587 * makes it difficult to decide to continue or stop
4588 * the evaluation.
4589 */
4590
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4591 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4592 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
4593 exp->action == ACT_PASS)) {
4594 exp = exp->next;
4595 continue;
4596 }
4597
4598 /* Apply the filter to the status line. */
4599 ret = apply_filter_to_sts_line(t, rtr, exp);
4600 if (unlikely(ret < 0))
4601 return -1;
4602
4603 if (likely(ret == 0)) {
4604 /* The filter did not match the response, it can be
4605 * iterated through all headers.
4606 */
4607 apply_filter_to_resp_headers(t, rtr, exp);
4608 }
4609 exp = exp->next;
4610 }
4611 return 0;
4612}
4613
4614
4615
4616/*
4617 * Manager server-side cookies
4618 */
4619void manage_server_side_cookies(struct session *t, struct buffer *rtr)
4620{
4621 struct http_txn *txn = &t->txn;
4622 char *p1, *p2, *p3, *p4;
4623
4624 appsess *asession_temp = NULL;
4625 appsess local_asession;
4626
4627 char *cur_ptr, *cur_end, *cur_next;
4628 int cur_idx, old_idx, delta;
4629
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4630 if (t->be->cookie_name == NULL &&
4631 t->be->appsession_name == NULL &&
4632 t->be->capture_name == NULL &&
4633 !(t->be->options & PR_O_CHK_CACHE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4634 return;
4635
4636 /* Iterate through the headers.
4637 * we start with the start line.
4638 */
4639 old_idx = 0;
4640 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4641
4642 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
4643 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4644 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4645
4646 cur_hdr = &txn->hdr_idx.v[cur_idx];
4647 cur_ptr = cur_next;
4648 cur_end = cur_ptr + cur_hdr->len;
4649 cur_next = cur_end + cur_hdr->cr + 1;
4650
4651 /* We have one full header between cur_ptr and cur_end, and the
4652 * next header starts at cur_next. We're only interested in
4653 * "Cookie:" headers.
4654 */
4655
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4656 val = http_header_match2(cur_ptr, cur_end, "Set-Cookie", 10);
4657 if (!val) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4658 old_idx = cur_idx;
4659 continue;
4660 }
4661
4662 /* OK, right now we know we have a set-cookie at cur_ptr */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4663 txn->flags |= TX_SCK_ANY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4664
4665
4666 /* maybe we only wanted to see if there was a set-cookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4667 if (t->be->cookie_name == NULL &&
4668 t->be->appsession_name == NULL &&
4669 t->be->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4670 return;
4671
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4672 p1 = cur_ptr + val; /* first non-space char after 'Set-Cookie:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4673
4674 while (p1 < cur_end) { /* in fact, we'll break after the first cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4675 if (p1 == cur_end || *p1 == ';') /* end of cookie */
4676 break;
4677
4678 /* p1 is at the beginning of the cookie name */
4679 p2 = p1;
4680
4681 while (p2 < cur_end && *p2 != '=' && *p2 != ';')
4682 p2++;
4683
4684 if (p2 == cur_end || *p2 == ';') /* next cookie */
4685 break;
4686
4687 p3 = p2 + 1; /* skip the '=' sign */
4688 if (p3 == cur_end)
4689 break;
4690
4691 p4 = p3;
4692 while (p4 < cur_end && !isspace((int)*p4) && *p4 != ';')
4693 p4++;
4694
4695 /* here, we have the cookie name between p1 and p2,
4696 * and its value between p3 and p4.
4697 * we can process it.
4698 */
4699
4700 /* first, let's see if we want to capture it */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4701 if (t->be->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4702 txn->srv_cookie == NULL &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4703 (p4 - p1 >= t->be->capture_namelen) &&
4704 memcmp(p1, t->be->capture_name, t->be->capture_namelen) == 0) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4705 int log_len = p4 - p1;
4706
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4707 if ((txn->srv_cookie = pool_alloc(capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4708 Alert("HTTP logging : out of memory.\n");
4709 }
4710
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4711 if (log_len > t->be->capture_len)
4712 log_len = t->be->capture_len;
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]4713 memcpy(txn->srv_cookie, p1, log_len);
4714 txn->srv_cookie[log_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4715 }
4716
4717 /* now check if we need to process it for persistence */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4718 if ((p2 - p1 == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
4719 (memcmp(p1, t->be->cookie_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4720 /* Cool... it's the right one */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4721 txn->flags |= TX_SCK_SEEN;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4722
4723 /* If the cookie is in insert mode on a known server, we'll delete
4724 * this occurrence because we'll insert another one later.
4725 * We'll delete it too if the "indirect" option is set and we're in
4726 * a direct access. */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4727 if (((t->srv) && (t->be->options & PR_O_COOK_INS)) ||
4728 ((t->flags & SN_DIRECT) && (t->be->options & PR_O_COOK_IND))) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4729 /* this header must be deleted */
4730 delta = buffer_replace2(rtr, cur_ptr, cur_next, NULL, 0);
4731 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
4732 txn->hdr_idx.used--;
4733 cur_hdr->len = 0;
4734 cur_next += delta;
4735 txn->rsp.eoh += delta;
4736
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4737 txn->flags |= TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4738 }
4739 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4740 (t->be->options & PR_O_COOK_RW)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4741 /* replace bytes p3->p4 with the cookie name associated
4742 * with this server since we know it.
4743 */
4744 delta = buffer_replace2(rtr, p3, p4, t->srv->cookie, t->srv->cklen);
4745 cur_hdr->len += delta;
4746 cur_next += delta;
4747 txn->rsp.eoh += delta;
4748
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4749 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4750 }
4751 else if ((t->srv) && (t->srv->cookie) &&
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4752 (t->be->options & PR_O_COOK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4753 /* insert the cookie name associated with this server
4754 * before existing cookie, and insert a delimitor between them..
4755 */
4756 delta = buffer_replace2(rtr, p3, p3, t->srv->cookie, t->srv->cklen + 1);
4757 cur_hdr->len += delta;
4758 cur_next += delta;
4759 txn->rsp.eoh += delta;
4760
4761 p3[t->srv->cklen] = COOKIE_DELIM;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4762 txn->flags |= TX_SCK_INSERTED | TX_SCK_DELETED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4763 }
4764 }
4765 /* next, let's see if the cookie is our appcookie */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4766 else if ((t->be->appsession_name != NULL) &&
4767 (memcmp(p1, t->be->appsession_name, p2 - p1) == 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4768
4769 /* Cool... it's the right one */
4770
4771 size_t server_id_len = strlen(t->srv->id) + 1;
4772 asession_temp = &local_asession;
4773
4774 if ((asession_temp->sessid = pool_alloc_from(apools.sessid, apools.ses_msize)) == NULL) {
4775 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4776 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4777 return;
4778 }
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4779 memcpy(asession_temp->sessid, p3, t->be->appsession_len);
4780 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4781 asession_temp->serverid = NULL;
4782
4783 /* only do insert, if lookup fails */
4784 if (chtbl_lookup(&(t->be->htbl_proxy), (void *) &asession_temp) != 0) {
4785 if ((asession_temp = pool_alloc(appsess)) == NULL) {
4786 Alert("Not enough Memory process_srv():asession:calloc().\n");
4787 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
4788 return;
4789 }
4790 asession_temp->sessid = local_asession.sessid;
4791 asession_temp->serverid = local_asession.serverid;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4792 chtbl_insert(&(t->be->htbl_proxy), (void *) asession_temp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4793 }/* end if (chtbl_lookup()) */
4794 else {
4795 /* free wasted memory */
4796 pool_free_to(apools.sessid, local_asession.sessid);
4797 } /* end else from if (chtbl_lookup()) */
4798
4799 if (asession_temp->serverid == NULL) {
4800 if ((asession_temp->serverid = pool_alloc_from(apools.serverid, apools.ser_msize)) == NULL) {
4801 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
4802 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
4803 return;
4804 }
4805 asession_temp->serverid[0] = '\0';
4806 }
4807
4808 if (asession_temp->serverid[0] == '\0')
4809 memcpy(asession_temp->serverid, t->srv->id, server_id_len);
4810
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4811 tv_delayfrom(&asession_temp->expire, &now, t->be->appsession_timeout);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4812
4813#if defined(DEBUG_HASH)
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4814 print_table(&(t->be->htbl_proxy));
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4815#endif
4816 }/* end if ((t->proxy->appsession_name != NULL) ... */
4817 break; /* we don't want to loop again since there cannot be another cookie on the same line */
4818 } /* we're now at the end of the cookie value */
4819
4820 /* keep the link from this header to next one */
4821 old_idx = cur_idx;
4822 } /* end of cookie processing on this header */
4823}
4824
4825
4826
4827/*
4828 * Check if response is cacheable or not. Updates t->flags.
4829 */
4830void check_response_for_cacheability(struct session *t, struct buffer *rtr)
4831{
4832 struct http_txn *txn = &t->txn;
4833 char *p1, *p2;
4834
4835 char *cur_ptr, *cur_end, *cur_next;
4836 int cur_idx;
4837
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4838 if (!txn->flags & TX_CACHEABLE)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4839 return;
4840
4841 /* Iterate through the headers.
4842 * we start with the start line.
4843 */
4844 cur_idx = 0;
4845 cur_next = rtr->data + txn->rsp.som + hdr_idx_first_pos(&txn->hdr_idx);
4846
4847 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
4848 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4849 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4850
4851 cur_hdr = &txn->hdr_idx.v[cur_idx];
4852 cur_ptr = cur_next;
4853 cur_end = cur_ptr + cur_hdr->len;
4854 cur_next = cur_end + cur_hdr->cr + 1;
4855
4856 /* We have one full header between cur_ptr and cur_end, and the
4857 * next header starts at cur_next. We're only interested in
4858 * "Cookie:" headers.
4859 */
4860
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4861 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
4862 if (val) {
4863 if ((cur_end - (cur_ptr + val) >= 8) &&
4864 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
4865 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
4866 return;
4867 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4868 }
4869
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4870 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
4871 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4872 continue;
4873
4874 /* OK, right now we know we have a cache-control header at cur_ptr */
4875
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]4876 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4877
4878 if (p1 >= cur_end) /* no more info */
4879 continue;
4880
4881 /* p1 is at the beginning of the value */
4882 p2 = p1;
4883
4884 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((int)*p2))
4885 p2++;
4886
4887 /* we have a complete value between p1 and p2 */
4888 if (p2 < cur_end && *p2 == '=') {
4889 /* we have something of the form no-cache="set-cookie" */
4890 if ((cur_end - p1 >= 21) &&
4891 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
4892 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4893 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4894 continue;
4895 }
4896
4897 /* OK, so we know that either p2 points to the end of string or to a comma */
4898 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
4899 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
4900 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
4901 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4902 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4903 return;
4904 }
4905
4906 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4907 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]4908 continue;
4909 }
4910 }
4911}
4912
4913
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4914/*
4915 * Try to retrieve a known appsession in the URI, then the associated server.
4916 * If the server is found, it's assigned to the session.
4917 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4918void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4919{
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4920 struct http_txn *txn = &t->txn;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4921 appsess *asession_temp = NULL;
4922 appsess local_asession;
4923 char *request_line;
4924
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4925 if (t->be->appsession_name == NULL ||
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]4926 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST) ||
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]4927 (request_line = memchr(begin, ';', len)) == NULL ||
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4928 ((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]4929 return;
4930
4931 /* skip ';' */
4932 request_line++;
4933
4934 /* look if we have a jsessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4935 if (strncasecmp(request_line, t->be->appsession_name, t->be->appsession_name_len) != 0)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4936 return;
4937
4938 /* skip jsessionid= */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4939 request_line += t->be->appsession_name_len + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4940
4941 /* First try if we already have an appsession */
4942 asession_temp = &local_asession;
4943
4944 if ((asession_temp->sessid = pool_alloc_from(apools.sessid, apools.ses_msize)) == NULL) {
4945 Alert("Not enough memory process_cli():asession_temp->sessid:calloc().\n");
4946 send_log(t->be, LOG_ALERT, "Not enough Memory process_cli():asession_temp->sessid:calloc().\n");
4947 return;
4948 }
4949
4950 /* Copy the sessionid */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4951 memcpy(asession_temp->sessid, request_line, t->be->appsession_len);
4952 asession_temp->sessid[t->be->appsession_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4953 asession_temp->serverid = NULL;
4954
4955 /* only do insert, if lookup fails */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4956 if (chtbl_lookup(&(t->be->htbl_proxy), (void *)&asession_temp)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4957 if ((asession_temp = pool_alloc(appsess)) == NULL) {
4958 /* free previously allocated memory */
4959 pool_free_to(apools.sessid, local_asession.sessid);
4960 Alert("Not enough memory process_cli():asession:calloc().\n");
4961 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession:calloc().\n");
4962 return;
4963 }
4964 asession_temp->sessid = local_asession.sessid;
4965 asession_temp->serverid = local_asession.serverid;
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4966 chtbl_insert(&(t->be->htbl_proxy), (void *) asession_temp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4967 }
4968 else {
4969 /* free previously allocated memory */
4970 pool_free_to(apools.sessid, local_asession.sessid);
4971 }
4972
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4973 tv_delayfrom(&asession_temp->expire, &now, t->be->appsession_timeout);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4974 asession_temp->request_count++;
4975
4976#if defined(DEBUG_HASH)
4977 print_table(&(t->proxy->htbl_proxy));
4978#endif
4979 if (asession_temp->serverid == NULL) {
4980 Alert("Found Application Session without matching server.\n");
4981 } else {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4982 struct server *srv = t->be->srv;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4983 while (srv) {
4984 if (strcmp(srv->id, asession_temp->serverid) == 0) {
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]4985 if (srv->state & SRV_RUNNING || t->be->options & PR_O_PERSIST) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4986 /* we found the server and it's usable */
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4987 txn->flags &= ~TX_CK_MASK;
4988 txn->flags |= TX_CK_VALID;
4989 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4990 t->srv = srv;
4991 break;
4992 } else {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]4993 txn->flags &= ~TX_CK_MASK;
4994 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4995 }
4996 }
4997 srv = srv->next;
4998 }
4999 }
5000}
5001
5002
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5003/*
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5004 * In a GET or HEAD request, check if the requested URI matches the stats uri
5005 * for the current backend, and if an authorization has been passed and is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5006 *
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5007 * 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]5008 * 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]5009 * produce_content() can be called to start sending data.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5010 *
5011 * Returns 1 if the session's state changes, otherwise 0.
5012 */
5013int stats_check_uri_auth(struct session *t, struct proxy *backend)
5014{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5015 struct http_txn *txn = &t->txn;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5016 struct uri_auth *uri_auth = backend->uri_auth;
5017 struct user_auth *user;
5018 int authenticated, cur_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5019 char *h;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5020
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5021 /* check URI size */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5022 if (uri_auth->uri_len > txn->req.sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5023 return 0;
5024
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5025 h = t->req->data + txn->req.sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]5026
Willy Tarreau0214c3a2007-01-07 13:47:30 +0100[diff] [blame]5027 /* the URI is in h */
5028 if (memcmp(h, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5029 return 0;
5030
5031 /* we are in front of a interceptable URI. Let's check
5032 * if there's an authentication and if it's valid.
5033 */
5034 user = uri_auth->users;
5035 if (!user) {
5036 /* no user auth required, it's OK */
5037 authenticated = 1;
5038 } else {
5039 authenticated = 0;
5040
5041 /* a user list is defined, we have to check.
5042 * skip 21 chars for "Authorization: Basic ".
5043 */
5044
5045 /* FIXME: this should move to an earlier place */
5046 cur_idx = 0;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5047 h = t->req->data + txn->req.som + hdr_idx_first_pos(&txn->hdr_idx);
5048 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
5049 int len = txn->hdr_idx.v[cur_idx].len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5050 if (len > 14 &&
5051 !strncasecmp("Authorization:", h, 14)) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5052 txn->auth_hdr.str = h;
5053 txn->auth_hdr.len = len;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5054 break;
5055 }
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5056 h += len + txn->hdr_idx.v[cur_idx].cr + 1;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5057 }
5058
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5059 if (txn->auth_hdr.len < 21 ||
5060 memcmp(txn->auth_hdr.str + 14, " Basic ", 7))
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5061 user = NULL;
5062
5063 while (user) {
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]5064 if ((txn->auth_hdr.len == user->user_len + 14 + 7)
5065 && !memcmp(txn->auth_hdr.str + 14 + 7,
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5066 user->user_pwd, user->user_len)) {
5067 authenticated = 1;
5068 break;
5069 }
5070 user = user->next;
5071 }
5072 }
5073
5074 if (!authenticated) {
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]5075 struct chunk msg;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5076
5077 /* no need to go further */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]5078 msg.str = trash;
5079 msg.len = sprintf(trash, HTTP_401_fmt, uri_auth->auth_realm);
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]5080 txn->status = 401;
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]5081 client_retnclose(t, &msg);
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]5082 if (!(t->flags & SN_ERR_MASK))
5083 t->flags |= SN_ERR_PRXCOND;
5084 if (!(t->flags & SN_FINST_MASK))
5085 t->flags |= SN_FINST_R;
5086 return 1;
5087 }
5088
5089 /* The request is valid, the user is authenticate. Let's start sending
5090 * data.
5091 */
5092 t->cli_state = CL_STSHUTR;
5093 t->req->rlim = t->req->data + BUFSIZE; /* no more rewrite needed */
5094 t->logs.t_request = tv_diff(&t->logs.tv_accept, &now);
5095 t->data_source = DATA_SRC_STATS;
5096 t->data_state = DATA_ST_INIT;
5097 produce_content(t);
5098 return 1;
5099}
5100
5101
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5102/*
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]5103 * Print a debug line with a header
5104 */
5105void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
5106{
5107 int len, max;
5108 len = sprintf(trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
5109 dir, (unsigned short)t->cli_fd, (unsigned short)t->srv_fd);
5110 max = end - start;
5111 UBOUND(max, sizeof(trash) - len - 1);
5112 len += strlcpy2(trash + len, start, max + 1);
5113 trash[len++] = '\n';
5114 write(1, trash, len);
5115}
5116
5117
5118/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5119 * Local variables:
5120 * c-indent-level: 8
5121 * c-basic-offset: 8
5122 * End:
5123 */