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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * HA-Proxy : High Availability-enabled HTTP/TCP proxy
Willy Tarreau7d0aaf32011-03-10 23:25:56 +01003 * Copyright 2000-2011 Willy Tarreau <w@1wt.eu>.
Willy Tarreaubaaee002006-06-26 02:48:02 +02004 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version
8 * 2 of the License, or (at your option) any later version.
9 *
10 * Please refer to RFC2068 or RFC2616 for informations about HTTP protocol, and
11 * RFC2965 for informations about cookies usage. More generally, the IETF HTTP
12 * Working Group's web site should be consulted for protocol related changes :
13 *
14 * http://ftp.ics.uci.edu/pub/ietf/http/
15 *
16 * Pending bugs (may be not fixed because never reproduced) :
17 * - solaris only : sometimes, an HTTP proxy with only a dispatch address causes
18 * the proxy to terminate (no core) if the client breaks the connection during
19 * the response. Seen on 1.1.8pre4, but never reproduced. May not be related to
20 * the snprintf() bug since requests were simple (GET / HTTP/1.0), but may be
21 * related to missing setsid() (fixed in 1.1.15)
22 * - a proxy with an invalid config will prevent the startup even if disabled.
23 *
24 * ChangeLog has moved to the CHANGELOG file.
25 *
Willy Tarreaubaaee002006-06-26 02:48:02 +020026 */
27
28#include <stdio.h>
29#include <stdlib.h>
30#include <unistd.h>
31#include <string.h>
32#include <ctype.h>
33#include <sys/time.h>
34#include <sys/types.h>
35#include <sys/socket.h>
36#include <netinet/tcp.h>
37#include <netinet/in.h>
38#include <arpa/inet.h>
39#include <netdb.h>
40#include <fcntl.h>
41#include <errno.h>
42#include <signal.h>
43#include <stdarg.h>
44#include <sys/resource.h>
45#include <time.h>
46#include <syslog.h>
47
48#ifdef DEBUG_FULL
49#include <assert.h>
50#endif
51
Willy Tarreau2dd0d472006-06-29 17:53:05 +020052#include <common/appsession.h>
53#include <common/base64.h>
54#include <common/cfgparse.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020055#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020056#include <common/compat.h>
57#include <common/config.h>
58#include <common/defaults.h>
Willy Tarreaud740bab2007-10-28 11:14:07 +010059#include <common/errors.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020060#include <common/memory.h>
61#include <common/mini-clist.h>
62#include <common/regex.h>
63#include <common/standard.h>
64#include <common/time.h>
65#include <common/uri_auth.h>
66#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020067
68#include <types/capture.h>
69#include <types/global.h>
Simon Hormanac821422011-07-15 13:14:09 +090070#include <types/proto_tcp.h>
71#include <types/acl.h>
Willy Tarreau3c63fd82011-09-07 18:00:47 +020072#include <types/peers.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020073
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +010074#include <proto/auth.h>
Willy Tarreau0fc45a72007-06-17 00:36:03 +020075#include <proto/acl.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020076#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020077#include <proto/channel.h>
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +020078#include <proto/checks.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020079#include <proto/fd.h>
Willy Tarreau34eb6712011-10-24 18:15:04 +020080#include <proto/hdr_idx.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020081#include <proto/listener.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020082#include <proto/log.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020083#include <proto/protocol.h>
Willy Tarreau80587432006-12-24 17:47:20 +010084#include <proto/proto_http.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020085#include <proto/proxy.h>
86#include <proto/queue.h>
87#include <proto/server.h>
Willy Tarreauc6ca1a02007-05-13 19:43:47 +020088#include <proto/session.h>
Willy Tarreau29857942009-05-10 09:01:21 +020089#include <proto/signal.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020090#include <proto/task.h>
91
Willy Tarreaub38651a2007-03-24 17:24:39 +010092#ifdef CONFIG_HAP_CTTPROXY
93#include <proto/cttproxy.h>
94#endif
95
Emeric Brunfc0421f2012-09-07 17:30:07 +020096#ifdef USE_OPENSSL
97#include <proto/ssl_sock.h>
98#endif
99
Willy Tarreaubaaee002006-06-26 02:48:02 +0200100/*********************************************************************/
101
102/*********************************************************************/
103
Willy Tarreau477ecd82010-01-03 21:12:30 +0100104/* list of config files */
105static struct list cfg_cfgfiles = LIST_HEAD_INIT(cfg_cfgfiles);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200106int pid; /* current process id */
Willy Tarreau28156642007-11-26 16:13:36 +0100107int relative_pid = 1; /* process id starting at 1 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200108
109/* global options */
110struct global global = {
William Lallemand5f232402012-04-05 18:02:55 +0200111 .req_count = 0,
William Lallemand0f99e342011-10-12 17:50:54 +0200112 .logsrvs = LIST_HEAD_INIT(global.logsrvs),
Emeric Bruned760922010-10-22 17:59:25 +0200113 .unix_bind = {
114 .ux = {
115 .uid = -1,
116 .gid = -1,
117 .mode = 0,
118 }
119 },
Willy Tarreau27a674e2009-08-17 07:23:33 +0200120 .tune = {
121 .bufsize = BUFSIZE,
122 .maxrewrite = MAXREWRITE,
Willy Tarreau43961d52010-10-04 20:39:20 +0200123 .chksize = BUFSIZE,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200124#ifdef USE_OPENSSL
125 .sslcachesize = 20000,
126#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200127 },
Willy Tarreau403edff2012-09-06 11:58:37 +0200128#if defined (USE_OPENSSL) && defined(DEFAULT_MAXSSLCONN)
129 .maxsslconn = DEFAULT_MAXSSLCONN,
130#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200131 /* others NULL OK */
132};
133
134/*********************************************************************/
135
136int stopping; /* non zero means stopping in progress */
Willy Tarreauaf7ad002010-08-31 15:39:26 +0200137int jobs = 0; /* number of active jobs (conns, listeners, active tasks, ...) */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200138
139/* Here we store informations about the pids of the processes we may pause
140 * or kill. We will send them a signal every 10 ms until we can bind to all
141 * our ports. With 200 retries, that's about 2 seconds.
142 */
143#define MAX_START_RETRIES 200
Willy Tarreaubaaee002006-06-26 02:48:02 +0200144static int *oldpids = NULL;
145static int oldpids_sig; /* use USR1 or TERM */
146
147/* this is used to drain data, and as a temporary buffer for sprintf()... */
David du Colombier7af46052012-05-16 14:16:48 +0200148char *trash = NULL;
149int trashlen = BUFSIZE;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200150
Willy Tarreau8096de92010-02-26 11:12:27 +0100151/* this buffer is always the same size as standard buffers and is used for
152 * swapping data inside a buffer.
153 */
154char *swap_buffer = NULL;
155
Willy Tarreaubb545b42010-08-25 12:58:59 +0200156int nb_oldpids = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200157const int zero = 0;
158const int one = 1;
Alexandre Cassen87ea5482007-10-11 20:48:58 +0200159const struct linger nolinger = { .l_onoff = 1, .l_linger = 0 };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200160
Willy Tarreau1d21e0a2010-03-12 21:58:54 +0100161char hostname[MAX_HOSTNAME_LEN];
Emeric Brun2b920a12010-09-23 18:30:22 +0200162char localpeer[MAX_HOSTNAME_LEN];
Willy Tarreaubaaee002006-06-26 02:48:02 +0200163
Willy Tarreau08ceb102011-07-24 22:58:00 +0200164/* list of the temporarily limited listeners because of lack of resource */
165struct list global_listener_queue = LIST_HEAD_INIT(global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +0200166struct task *global_listener_queue_task;
167static struct task *manage_global_listener_queue(struct task *t);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200168
169/*********************************************************************/
170/* general purpose functions ***************************************/
171/*********************************************************************/
172
173void display_version()
174{
175 printf("HA-Proxy version " HAPROXY_VERSION " " HAPROXY_DATE"\n");
Willy Tarreau9eeb57b2012-03-26 06:15:29 +0200176 printf("Copyright 2000-2012 Willy Tarreau <w@1wt.eu>\n\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200177}
178
Willy Tarreau7b066db2007-12-02 11:28:59 +0100179void display_build_opts()
180{
181 printf("Build options :"
182#ifdef BUILD_TARGET
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100183 "\n TARGET = " BUILD_TARGET
Willy Tarreau7b066db2007-12-02 11:28:59 +0100184#endif
185#ifdef BUILD_CPU
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100186 "\n CPU = " BUILD_CPU
Willy Tarreau7b066db2007-12-02 11:28:59 +0100187#endif
188#ifdef BUILD_CC
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100189 "\n CC = " BUILD_CC
190#endif
191#ifdef BUILD_CFLAGS
192 "\n CFLAGS = " BUILD_CFLAGS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100193#endif
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100194#ifdef BUILD_OPTIONS
195 "\n OPTIONS = " BUILD_OPTIONS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100196#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200197 "\n\nDefault settings :"
198 "\n maxconn = %d, bufsize = %d, maxrewrite = %d, maxpollevents = %d"
199 "\n\n",
200 DEFAULT_MAXCONN, BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
Willy Tarreaube5b6852009-10-03 18:57:08 +0200201
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100202 printf("Encrypted password support via crypt(3): "
203#ifdef CONFIG_HAP_CRYPT
204 "yes"
205#else
206 "no"
207#endif
208 "\n");
209
Willy Tarreau1ee0e302012-09-10 07:16:05 +0200210#ifdef USE_OPENSSL
211 printf("Built with OpenSSL version : " OPENSSL_VERSION_TEXT "\n");
212 printf("OpenSSL library supports TLS extensions : "
213#if OPENSSL_VERSION_NUMBER < 0x00907000L
214 "no (library version too old)"
215#elif defined(OPENSSL_NO_TLSEXT)
216 "no (disabled via OPENSSL_NO_TLSEXT)"
217#else
218 "yes"
219#endif
220 "\n");
221 printf("OpenSSL library supports SNI : "
222#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
223 "yes"
224#else
225#ifdef OPENSSL_NO_TLSEXT
226 "no (because of OPENSSL_NO_TLSEXT)"
227#else
228 "no (version might be too old, 0.9.8f min needed)"
229#endif
230#endif
231 "\n");
232 printf("OpenSSL library supports prefer-server-ciphers : "
233#ifdef SSL_OP_CIPHER_SERVER_PREFERENCE
234 "yes"
235#else
236 "no (0.9.7 or later needed)"
237#endif
238 "\n");
239#else /* USE_OPENSSL */
240 printf("Built without OpenSSL support (USE_OPENSSL not set)\n");
241#endif
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100242 putchar('\n');
243
Willy Tarreaube5b6852009-10-03 18:57:08 +0200244 list_pollers(stdout);
245 putchar('\n');
Willy Tarreau7b066db2007-12-02 11:28:59 +0100246}
247
Willy Tarreaubaaee002006-06-26 02:48:02 +0200248/*
249 * This function prints the command line usage and exits
250 */
251void usage(char *name)
252{
253 display_version();
254 fprintf(stderr,
Willy Tarreau5d01a632009-06-22 16:02:30 +0200255 "Usage : %s [-f <cfgfile>]* [ -vdV"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200256 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200257 " [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100258 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200259 " -d enters debug mode ; -db only disables background mode.\n"
Willy Tarreau6e064432012-05-08 15:40:42 +0200260 " -dM[<byte>] poisons memory with <byte> (defaults to 0x50)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200261 " -V enters verbose mode (disables quiet mode)\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200262 " -D goes daemon ; -C changes to <dir> before loading files.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200263 " -q quiet mode : don't display messages\n"
Willy Tarreau5d01a632009-06-22 16:02:30 +0200264 " -c check mode : only check config files and exit\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200265 " -n sets the maximum total # of connections (%d)\n"
266 " -m limits the usable amount of memory (in MB)\n"
267 " -N sets the default, per-proxy maximum # of connections (%d)\n"
Emeric Brun2b920a12010-09-23 18:30:22 +0200268 " -L set local peer name (default to hostname)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200269 " -p writes pids of all children to this file\n"
270#if defined(ENABLE_EPOLL)
271 " -de disables epoll() usage even when available\n"
272#endif
Willy Tarreaude99e992007-04-16 00:53:59 +0200273#if defined(ENABLE_SEPOLL)
274 " -ds disables speculative epoll() usage even when available\n"
275#endif
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200276#if defined(ENABLE_KQUEUE)
277 " -dk disables kqueue() usage even when available\n"
278#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200279#if defined(ENABLE_POLL)
280 " -dp disables poll() usage even when available\n"
281#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +0200282#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100283 " -dS disables splice usage (broken on old kernels)\n"
284#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200285 " -sf/-st [pid ]* finishes/terminates old pids. Must be last arguments.\n"
286 "\n",
287 name, DEFAULT_MAXCONN, cfg_maxpconn);
288 exit(1);
289}
290
291
292
293/*********************************************************************/
294/* more specific functions ***************************************/
295/*********************************************************************/
296
297/*
Willy Tarreaud0807c32010-08-27 18:26:11 +0200298 * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
299 * a signal zero to all subscribers. This means that it's as easy as
300 * subscribing to signal 0 to get informed about an imminent shutdown.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200301 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200302void sig_soft_stop(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200303{
304 soft_stop();
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200305 signal_unregister_handler(sh);
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200306 pool_gc2();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200307}
308
309/*
310 * upon SIGTTOU, we pause everything
311 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200312void sig_pause(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200313{
314 pause_proxies();
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200315 pool_gc2();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200316}
317
318/*
319 * upon SIGTTIN, let's have a soft stop.
320 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200321void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200322{
Willy Tarreaube58c382011-07-24 18:28:10 +0200323 resume_proxies();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200324}
325
326/*
327 * this function dumps every server's state when the process receives SIGHUP.
328 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200329void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200330{
331 struct proxy *p = proxy;
332
333 Warning("SIGHUP received, dumping servers states.\n");
334 while (p) {
335 struct server *s = p->srv;
336
337 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
338 while (s) {
David du Colombier7af46052012-05-16 14:16:48 +0200339 snprintf(trash, trashlen,
Willy Tarreau3b88d442009-04-11 20:44:08 +0200340 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
Willy Tarreaubaaee002006-06-26 02:48:02 +0200341 p->id, s->id,
342 (s->state & SRV_RUNNING) ? "UP" : "DOWN",
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200343 s->cur_sess, s->nbpend, s->counters.cum_sess);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200344 Warning("%s\n", trash);
345 send_log(p, LOG_NOTICE, "%s\n", trash);
346 s = s->next;
347 }
348
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200349 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
350 if (!p->srv) {
David du Colombier7af46052012-05-16 14:16:48 +0200351 snprintf(trash, trashlen,
Willy Tarreau3b88d442009-04-11 20:44:08 +0200352 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200353 p->id,
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100354 p->feconn, p->beconn, p->totpend, p->nbpend, p->fe_counters.cum_conn, p->be_counters.cum_conn);
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200355 } else if (p->srv_act == 0) {
David du Colombier7af46052012-05-16 14:16:48 +0200356 snprintf(trash, trashlen,
Willy Tarreau3b88d442009-04-11 20:44:08 +0200357 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
Willy Tarreaubaaee002006-06-26 02:48:02 +0200358 p->id,
359 (p->srv_bck) ? "is running on backup servers" : "has no server available",
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100360 p->feconn, p->beconn, p->totpend, p->nbpend, p->fe_counters.cum_conn, p->be_counters.cum_conn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200361 } else {
David du Colombier7af46052012-05-16 14:16:48 +0200362 snprintf(trash, trashlen,
Willy Tarreaubaaee002006-06-26 02:48:02 +0200363 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
Willy Tarreau3b88d442009-04-11 20:44:08 +0200364 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
Willy Tarreaubaaee002006-06-26 02:48:02 +0200365 p->id, p->srv_act, p->srv_bck,
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100366 p->feconn, p->beconn, p->totpend, p->nbpend, p->fe_counters.cum_conn, p->be_counters.cum_conn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200367 }
368 Warning("%s\n", trash);
369 send_log(p, LOG_NOTICE, "%s\n", trash);
370
371 p = p->next;
372 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200373}
374
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200375void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200376{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200377 /* dump memory usage then free everything possible */
378 dump_pools();
379 pool_gc2();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200380}
381
Willy Tarreaubaaee002006-06-26 02:48:02 +0200382/*
383 * This function initializes all the necessary variables. It only returns
384 * if everything is OK. If something fails, it exits.
385 */
386void init(int argc, char **argv)
387{
Willy Tarreaubaaee002006-06-26 02:48:02 +0200388 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200389 char *tmp;
390 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +0200391 int err_code = 0;
Willy Tarreau477ecd82010-01-03 21:12:30 +0100392 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +0000393 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +0200394 char *change_dir = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200395
David du Colombier7af46052012-05-16 14:16:48 +0200396 trash = malloc(trashlen);
397
Emeric Brun2b920a12010-09-23 18:30:22 +0200398 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
399 * the string in case of truncation, and at least FreeBSD appears not to do
400 * it.
401 */
402 memset(hostname, 0, sizeof(hostname));
403 gethostname(hostname, sizeof(hostname) - 1);
404 memset(localpeer, 0, sizeof(localpeer));
405 memcpy(localpeer, hostname, (sizeof(hostname) > sizeof(localpeer) ? sizeof(localpeer) : sizeof(hostname)) - 1);
406
Willy Tarreaubaaee002006-06-26 02:48:02 +0200407 /*
408 * Initialize the previously static variables.
409 */
410
Willy Tarreau3eba98a2009-01-25 13:56:13 +0100411 totalconn = actconn = maxfd = listeners = stopping = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200412
413
414#ifdef HAPROXY_MEMMAX
415 global.rlimit_memmax = HAPROXY_MEMMAX;
416#endif
417
Willy Tarreaub0b37bc2008-06-23 14:00:57 +0200418 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200419 start_date = now;
420
Willy Tarreau29857942009-05-10 09:01:21 +0200421 signal_init();
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200422 init_task();
423 init_session();
Willy Tarreau8280d642009-09-23 23:37:52 +0200424 /* warning, we init buffers later */
Willy Tarreaue4d7e552007-05-13 20:19:55 +0200425 init_pendconn();
Willy Tarreau80587432006-12-24 17:47:20 +0100426 init_proto_http();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200427
Willy Tarreau43b78992009-01-25 15:42:27 +0100428 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200429#if defined(ENABLE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +0100430 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200431#endif
432#if defined(ENABLE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +0100433 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200434#endif
Willy Tarreaude99e992007-04-16 00:53:59 +0200435#if defined(ENABLE_SEPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +0100436 global.tune.options |= GTUNE_USE_SEPOLL;
Willy Tarreaude99e992007-04-16 00:53:59 +0200437#endif
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200438#if defined(ENABLE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +0100439 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200440#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +0200441#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100442 global.tune.options |= GTUNE_USE_SPLICE;
443#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200444
445 pid = getpid();
446 progname = *argv;
447 while ((tmp = strchr(progname, '/')) != NULL)
448 progname = tmp + 1;
449
Kevinm48936af2010-12-22 16:08:21 +0000450 /* the process name is used for the logs only */
451 global.log_tag = strdup(progname);
452
Willy Tarreaubaaee002006-06-26 02:48:02 +0200453 argc--; argv++;
454 while (argc > 0) {
455 char *flag;
456
457 if (**argv == '-') {
458 flag = *argv+1;
459
460 /* 1 arg */
461 if (*flag == 'v') {
462 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +0100463 if (flag[1] == 'v') /* -vv */
464 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200465 exit(0);
466 }
467#if defined(ENABLE_EPOLL)
468 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +0100469 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200470#endif
Willy Tarreaude99e992007-04-16 00:53:59 +0200471#if defined(ENABLE_SEPOLL)
472 else if (*flag == 'd' && flag[1] == 's')
Willy Tarreau43b78992009-01-25 15:42:27 +0100473 global.tune.options &= ~GTUNE_USE_SEPOLL;
Willy Tarreaude99e992007-04-16 00:53:59 +0200474#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200475#if defined(ENABLE_POLL)
476 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +0100477 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200478#endif
Willy Tarreau69cad1a2007-04-10 22:45:11 +0200479#if defined(ENABLE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200480 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +0100481 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200482#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +0200483#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100484 else if (*flag == 'd' && flag[1] == 'S')
485 global.tune.options &= ~GTUNE_USE_SPLICE;
486#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200487 else if (*flag == 'V')
488 arg_mode |= MODE_VERBOSE;
489 else if (*flag == 'd' && flag[1] == 'b')
490 arg_mode |= MODE_FOREGROUND;
Willy Tarreau6e064432012-05-08 15:40:42 +0200491 else if (*flag == 'd' && flag[1] == 'M')
492 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreaubaaee002006-06-26 02:48:02 +0200493 else if (*flag == 'd')
494 arg_mode |= MODE_DEBUG;
495 else if (*flag == 'c')
496 arg_mode |= MODE_CHECK;
497 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +0200498 arg_mode |= MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200499 else if (*flag == 'q')
500 arg_mode |= MODE_QUIET;
501 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
502 /* list of pids to finish ('f') or terminate ('t') */
503
504 if (flag[1] == 'f')
505 oldpids_sig = SIGUSR1; /* finish then exit */
506 else
507 oldpids_sig = SIGTERM; /* terminate immediately */
508 argv++; argc--;
509
510 if (argc > 0) {
511 oldpids = calloc(argc, sizeof(int));
512 while (argc > 0) {
513 oldpids[nb_oldpids] = atol(*argv);
514 if (oldpids[nb_oldpids] <= 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +0200515 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200516 argc--; argv++;
517 nb_oldpids++;
518 }
519 }
520 }
521 else { /* >=2 args */
522 argv++; argc--;
523 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +0200524 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200525
526 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +0200527 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200528 case 'n' : cfg_maxconn = atol(*argv); break;
529 case 'm' : global.rlimit_memmax = atol(*argv); break;
530 case 'N' : cfg_maxpconn = atol(*argv); break;
Emeric Brun2b920a12010-09-23 18:30:22 +0200531 case 'L' : strncpy(localpeer, *argv, sizeof(localpeer) - 1); break;
Willy Tarreau5d01a632009-06-22 16:02:30 +0200532 case 'f' :
Willy Tarreau477ecd82010-01-03 21:12:30 +0100533 wl = (struct wordlist *)calloc(1, sizeof(*wl));
534 if (!wl) {
535 Alert("Cannot load configuration file %s : out of memory.\n", *argv);
Willy Tarreau5d01a632009-06-22 16:02:30 +0200536 exit(1);
537 }
Willy Tarreau477ecd82010-01-03 21:12:30 +0100538 wl->s = *argv;
539 LIST_ADDQ(&cfg_cfgfiles, &wl->list);
Willy Tarreau5d01a632009-06-22 16:02:30 +0200540 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200541 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +0200542 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200543 }
544 }
545 }
546 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +0200547 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200548 argv++; argc--;
549 }
550
551 global.mode = MODE_STARTING | /* during startup, we want most of the alerts */
552 (arg_mode & (MODE_DAEMON | MODE_FOREGROUND | MODE_VERBOSE
553 | MODE_QUIET | MODE_CHECK | MODE_DEBUG));
554
Willy Tarreau477ecd82010-01-03 21:12:30 +0100555 if (LIST_ISEMPTY(&cfg_cfgfiles))
Willy Tarreau3bafcdc2011-09-10 19:20:23 +0200556 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200557
Willy Tarreau576132e2011-09-10 19:26:56 +0200558 if (change_dir && chdir(change_dir) < 0) {
559 Alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
560 exit(1);
561 }
562
Willy Tarreaubaaee002006-06-26 02:48:02 +0200563 have_appsession = 0;
564 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200565
566 init_default_instance();
567
Willy Tarreau477ecd82010-01-03 21:12:30 +0100568 list_for_each_entry(wl, &cfg_cfgfiles, list) {
Willy Tarreauc4382422009-12-06 13:10:44 +0100569 int ret;
570
Willy Tarreau477ecd82010-01-03 21:12:30 +0100571 ret = readcfgfile(wl->s);
Willy Tarreauc4382422009-12-06 13:10:44 +0100572 if (ret == -1) {
573 Alert("Could not open configuration file %s : %s\n",
Willy Tarreau477ecd82010-01-03 21:12:30 +0100574 wl->s, strerror(errno));
Willy Tarreauc4382422009-12-06 13:10:44 +0100575 exit(1);
576 }
Willy Tarreau25a67fa2009-12-15 21:46:25 +0100577 if (ret & (ERR_ABORT|ERR_FATAL))
Willy Tarreau477ecd82010-01-03 21:12:30 +0100578 Alert("Error(s) found in configuration file : %s\n", wl->s);
Willy Tarreau25a67fa2009-12-15 21:46:25 +0100579 err_code |= ret;
Willy Tarreau058e9072009-07-20 09:30:05 +0200580 if (err_code & ERR_ABORT)
Willy Tarreau5d01a632009-06-22 16:02:30 +0200581 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200582 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +0200583
Willy Tarreaubb925012009-07-23 13:36:36 +0200584 err_code |= check_config_validity();
585 if (err_code & (ERR_ABORT|ERR_FATAL)) {
586 Alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200587 exit(1);
588 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200589
590 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +0100591 struct peers *pr;
592 struct proxy *px;
593
594 for (pr = peers; pr; pr = pr->next)
595 if (pr->peers_fe)
596 break;
597
598 for (px = proxy; px; px = px->next)
Willy Tarreau4348fad2012-09-20 16:48:07 +0200599 if (px->state == PR_STNEW && !LIST_ISEMPTY(&px->conf.listeners))
Willy Tarreau8b15ba12012-02-02 17:48:18 +0100600 break;
601
602 if (pr || px) {
603 /* At least one peer or one listener has been found */
604 qfprintf(stdout, "Configuration file is valid\n");
605 exit(0);
606 }
607 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
608 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200609 }
610
Willy Tarreaue9b26022011-08-01 20:57:55 +0200611 global_listener_queue_task = task_new();
612 if (!global_listener_queue_task) {
613 Alert("Out of memory when initializing global task\n");
614 exit(1);
615 }
616 /* very simple initialization, users will queue the task if needed */
617 global_listener_queue_task->context = NULL; /* not even a context! */
618 global_listener_queue_task->process = manage_global_listener_queue;
619 global_listener_queue_task->expire = TICK_ETERNITY;
620
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200621 /* now we know the buffer size, we can initialize the channels and buffers */
622 init_channel();
Willy Tarreau8280d642009-09-23 23:37:52 +0200623
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200624 if (have_appsession)
625 appsession_init();
626
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +0200627 if (start_checks() < 0)
628 exit(1);
629
Willy Tarreaubaaee002006-06-26 02:48:02 +0200630 if (cfg_maxconn > 0)
631 global.maxconn = cfg_maxconn;
632
633 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +0200634 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200635 global.pidfile = strdup(cfg_pidfile);
636 }
637
638 if (global.maxconn == 0)
639 global.maxconn = DEFAULT_MAXCONN;
640
Willy Tarreau66aa61f2009-01-18 21:44:07 +0100641 if (!global.maxpipes) {
642 /* maxpipes not specified. Count how many frontends and backends
643 * may be using splicing, and bound that to maxconn.
644 */
645 struct proxy *cur;
646 int nbfe = 0, nbbe = 0;
647
648 for (cur = proxy; cur; cur = cur->next) {
649 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
650 if (cur->cap & PR_CAP_FE)
651 nbfe += cur->maxconn;
652 if (cur->cap & PR_CAP_BE)
Willy Tarreauafb48762009-01-25 10:42:05 +0100653 nbbe += cur->fullconn ? cur->fullconn : global.maxconn;
Willy Tarreau66aa61f2009-01-18 21:44:07 +0100654 }
655 }
656 global.maxpipes = MAX(nbfe, nbbe);
657 if (global.maxpipes > global.maxconn)
658 global.maxpipes = global.maxconn;
Willy Tarreau686ac822009-01-25 14:06:58 +0100659 global.maxpipes /= 4;
Willy Tarreau66aa61f2009-01-18 21:44:07 +0100660 }
661
662
Willy Tarreauabacc2c2011-09-07 14:26:33 +0200663 global.hardmaxconn = global.maxconn; /* keep this max value */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200664 global.maxsock += global.maxconn * 2; /* each connection needs two sockets */
Willy Tarreau3ec79b92009-01-18 20:39:42 +0100665 global.maxsock += global.maxpipes * 2; /* each pipe needs two FDs */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200666
Willy Tarreau3c63fd82011-09-07 18:00:47 +0200667 if (global.stats_fe)
668 global.maxsock += global.stats_fe->maxconn;
669
670 if (peers) {
671 /* peers also need to bypass global maxconn */
672 struct peers *p = peers;
673
674 for (p = peers; p; p = p->next)
675 if (p->peers_fe)
676 global.maxsock += p->peers_fe->maxconn;
677 }
678
Willy Tarreau1db37712007-06-03 17:16:49 +0200679 if (global.tune.maxpollevents <= 0)
680 global.tune.maxpollevents = MAX_POLL_EVENTS;
681
Willy Tarreauf49d1df2009-03-01 08:35:41 +0100682 if (global.tune.maxaccept == 0) {
Willy Tarreau4827fd22011-07-22 21:59:59 +0200683 /* Note: we should not try to accept too many connections at once,
684 * because past one point we're significantly reducing the cache
685 * efficiency and the highest session rate significantly drops.
686 * Values between 15 and 35 seem fine on a Core i5 with 4M L3 cache.
687 */
Willy Tarreaua0250ba2008-01-06 11:22:57 +0100688 if (global.nbproc > 1)
689 global.tune.maxaccept = 8; /* leave some conns to other processes */
690 else
Willy Tarreau4827fd22011-07-22 21:59:59 +0200691 global.tune.maxaccept = 32; /* accept more incoming conns at once */
Willy Tarreaua0250ba2008-01-06 11:22:57 +0100692 }
693
Willy Tarreau6f4a82c2009-03-21 20:43:57 +0100694 if (global.tune.recv_enough == 0)
695 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
696
Willy Tarreau27a674e2009-08-17 07:23:33 +0200697 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
698 global.tune.maxrewrite = global.tune.bufsize / 2;
699
Willy Tarreaubaaee002006-06-26 02:48:02 +0200700 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
701 /* command line debug mode inhibits configuration mode */
702 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
703 }
704 global.mode |= (arg_mode & (MODE_DAEMON | MODE_FOREGROUND | MODE_QUIET |
Willy Tarreaufbee7132007-10-18 13:53:22 +0200705 MODE_VERBOSE | MODE_DEBUG ));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200706
707 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
708 Warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
709 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
710 }
711
712 if ((global.nbproc > 1) && !(global.mode & MODE_DAEMON)) {
713 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
714 Warning("<nbproc> is only meaningful in daemon mode. Setting limit to 1 process.\n");
715 global.nbproc = 1;
716 }
717
718 if (global.nbproc < 1)
719 global.nbproc = 1;
720
Willy Tarreau8096de92010-02-26 11:12:27 +0100721 swap_buffer = (char *)calloc(1, global.tune.bufsize);
722
Willy Tarreau8d5d77e2009-10-18 07:25:52 +0200723 fdinfo = (struct fdinfo *)calloc(1,
724 sizeof(struct fdinfo) * (global.maxsock));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200725 fdtab = (struct fdtab *)calloc(1,
726 sizeof(struct fdtab) * (global.maxsock));
Willy Tarreauef1d1f82007-04-16 00:25:25 +0200727 /*
728 * Note: we could register external pollers here.
729 * Built-in pollers have been registered before main().
730 */
Willy Tarreau4f60f162007-04-08 16:39:58 +0200731
Willy Tarreau43b78992009-01-25 15:42:27 +0100732 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200733 disable_poller("kqueue");
734
Willy Tarreau43b78992009-01-25 15:42:27 +0100735 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +0200736 disable_poller("epoll");
737
Willy Tarreau43b78992009-01-25 15:42:27 +0100738 if (!(global.tune.options & GTUNE_USE_SEPOLL))
Willy Tarreaude99e992007-04-16 00:53:59 +0200739 disable_poller("sepoll");
740
Willy Tarreau43b78992009-01-25 15:42:27 +0100741 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +0200742 disable_poller("poll");
743
Willy Tarreau43b78992009-01-25 15:42:27 +0100744 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +0200745 disable_poller("select");
746
747 /* Note: we could disable any poller by name here */
748
Willy Tarreau2ff76222007-04-09 19:29:56 +0200749 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
750 list_pollers(stderr);
751
Willy Tarreau4f60f162007-04-08 16:39:58 +0200752 if (!init_pollers()) {
Willy Tarreau2ff76222007-04-09 19:29:56 +0200753 Alert("No polling mechanism available.\n");
Willy Tarreau4f60f162007-04-08 16:39:58 +0200754 exit(1);
755 }
Willy Tarreau2ff76222007-04-09 19:29:56 +0200756 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
757 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +0200758 }
759
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +0200760 if (!global.node)
761 global.node = strdup(hostname);
762
Willy Tarreaubaaee002006-06-26 02:48:02 +0200763}
764
Simon Horman6fb82592011-07-15 13:14:11 +0900765static void deinit_acl_cond(struct acl_cond *cond)
Simon Hormanac821422011-07-15 13:14:09 +0900766{
Simon Hormanac821422011-07-15 13:14:09 +0900767 struct acl_term_suite *suite, *suiteb;
768 struct acl_term *term, *termb;
769
Simon Horman6fb82592011-07-15 13:14:11 +0900770 if (!cond)
771 return;
772
773 list_for_each_entry_safe(suite, suiteb, &cond->suites, list) {
774 list_for_each_entry_safe(term, termb, &suite->terms, list) {
775 LIST_DEL(&term->list);
776 free(term);
Simon Hormanac821422011-07-15 13:14:09 +0900777 }
Simon Horman6fb82592011-07-15 13:14:11 +0900778 LIST_DEL(&suite->list);
779 free(suite);
780 }
781
782 free(cond);
783}
784
785static void deinit_tcp_rules(struct list *rules)
786{
787 struct tcp_rule *trule, *truleb;
788
789 list_for_each_entry_safe(trule, truleb, rules, list) {
Simon Hormanac821422011-07-15 13:14:09 +0900790 LIST_DEL(&trule->list);
Simon Horman6fb82592011-07-15 13:14:11 +0900791 deinit_acl_cond(trule->cond);
Simon Hormanac821422011-07-15 13:14:09 +0900792 free(trule);
793 }
794}
795
Willy Tarreau12785782012-04-27 21:37:17 +0200796static void deinit_sample_arg(struct arg *p)
Simon Horman6fb82592011-07-15 13:14:11 +0900797{
Willy Tarreauf9954102012-04-20 14:03:29 +0200798 struct arg *p_back = p;
799
Simon Horman6fb82592011-07-15 13:14:11 +0900800 if (!p)
801 return;
802
Willy Tarreauf9954102012-04-20 14:03:29 +0200803 while (p->type != ARGT_STOP) {
Willy Tarreau496aa012012-06-01 10:38:29 +0200804 if (p->type == ARGT_STR || p->unresolved) {
Willy Tarreauf9954102012-04-20 14:03:29 +0200805 free(p->data.str.str);
806 p->data.str.str = NULL;
Willy Tarreau496aa012012-06-01 10:38:29 +0200807 p->unresolved = 0;
Willy Tarreauecfb8e82012-04-20 12:29:52 +0200808 }
Willy Tarreauf9954102012-04-20 14:03:29 +0200809 p++;
Willy Tarreauecfb8e82012-04-20 12:29:52 +0200810 }
Simon Horman6fb82592011-07-15 13:14:11 +0900811
Willy Tarreauf9954102012-04-20 14:03:29 +0200812 free(p_back);
Simon Horman6fb82592011-07-15 13:14:11 +0900813}
814
815static void deinit_stick_rules(struct list *rules)
816{
817 struct sticking_rule *rule, *ruleb;
818
819 list_for_each_entry_safe(rule, ruleb, rules, list) {
820 LIST_DEL(&rule->list);
821 deinit_acl_cond(rule->cond);
822 if (rule->expr) {
Willy Tarreau12785782012-04-27 21:37:17 +0200823 struct sample_conv_expr *conv_expr, *conv_exprb;
Simon Horman6fb82592011-07-15 13:14:11 +0900824 list_for_each_entry_safe(conv_expr, conv_exprb, &rule->expr->conv_exprs, list)
Willy Tarreau12785782012-04-27 21:37:17 +0200825 deinit_sample_arg(conv_expr->arg_p);
826 deinit_sample_arg(rule->expr->arg_p);
Simon Horman6fb82592011-07-15 13:14:11 +0900827 free(rule->expr);
828 }
829 free(rule);
830 }
831}
832
Willy Tarreaubaaee002006-06-26 02:48:02 +0200833void deinit(void)
834{
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200835 struct proxy *p = proxy, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200836 struct cap_hdr *h,*h_next;
837 struct server *s,*s_next;
838 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200839 struct acl_cond *cond, *condb;
840 struct hdr_exp *exp, *expb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200841 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200842 struct switching_rule *rule, *ruleb;
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200843 struct server_rule *srule, *sruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200844 struct redirect_rule *rdr, *rdrb;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100845 struct wordlist *wl, *wlb;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100846 struct cond_wordlist *cwl, *cwlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200847 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +0200848 struct logsrv *log, *logb;
William Lallemand723b73a2012-02-08 16:37:49 +0100849 struct logformat_node *lf, *lfb;
Willy Tarreau2a65ff02012-09-13 17:54:29 +0200850 struct bind_conf *bind_conf, *bind_back;
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200851 int i;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200852
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200853 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200854 while (p) {
Willy Tarreaua534fea2008-08-03 12:19:50 +0200855 free(p->id);
856 free(p->check_req);
857 free(p->cookie_name);
858 free(p->cookie_domain);
859 free(p->url_param_name);
860 free(p->capture_name);
861 free(p->monitor_uri);
Simon Hormana31c7f72011-07-15 13:14:08 +0900862 free(p->rdp_cookie_name);
Willy Tarreau39b06652012-06-01 10:58:06 +0200863 if (p->logformat_string != default_http_log_format &&
864 p->logformat_string != default_tcp_log_format &&
865 p->logformat_string != clf_http_log_format)
Willy Tarreau196729e2012-05-31 19:30:26 +0200866 free(p->logformat_string);
867
868 free(p->uniqueid_format_string);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200869
Willy Tarreaua534fea2008-08-03 12:19:50 +0200870 for (i = 0; i < HTTP_ERR_SIZE; i++)
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200871 chunk_destroy(&p->errmsg[i]);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200872
Willy Tarreauf4f04122010-01-28 18:10:50 +0100873 list_for_each_entry_safe(cwl, cwlb, &p->req_add, list) {
874 LIST_DEL(&cwl->list);
875 free(cwl->s);
876 free(cwl);
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100877 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200878
Willy Tarreauf4f04122010-01-28 18:10:50 +0100879 list_for_each_entry_safe(cwl, cwlb, &p->rsp_add, list) {
880 LIST_DEL(&cwl->list);
881 free(cwl->s);
882 free(cwl);
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100883 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200884
885 list_for_each_entry_safe(cond, condb, &p->block_cond, list) {
886 LIST_DEL(&cond->list);
887 prune_acl_cond(cond);
888 free(cond);
889 }
890
Willy Tarreaub80c2302007-11-30 20:51:32 +0100891 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
892 LIST_DEL(&cond->list);
893 prune_acl_cond(cond);
894 free(cond);
895 }
896
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200897 for (exp = p->req_exp; exp != NULL; ) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200898 if (exp->preg) {
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200899 regfree((regex_t *)exp->preg);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200900 free((regex_t *)exp->preg);
901 }
902
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200903 if (exp->replace && exp->action != ACT_SETBE)
904 free((char *)exp->replace);
905 expb = exp;
906 exp = exp->next;
907 free(expb);
908 }
909
910 for (exp = p->rsp_exp; exp != NULL; ) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200911 if (exp->preg) {
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200912 regfree((regex_t *)exp->preg);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200913 free((regex_t *)exp->preg);
914 }
915
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200916 if (exp->replace && exp->action != ACT_SETBE)
917 free((char *)exp->replace);
918 expb = exp;
919 exp = exp->next;
920 free(expb);
921 }
922
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200923 /* build a list of unique uri_auths */
924 if (!ua)
925 ua = p->uri_auth;
926 else {
927 /* check if p->uri_auth is unique */
928 for (uap = ua; uap; uap=uap->next)
929 if (uap == p->uri_auth)
930 break;
931
Willy Tarreauaccc4e12008-06-24 11:14:45 +0200932 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200933 /* add it, if it is */
934 p->uri_auth->next = ua;
935 ua = p->uri_auth;
936 }
937 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200938
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200939 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
940 LIST_DEL(&acl->list);
941 prune_acl(acl);
942 free(acl);
943 }
944
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200945 list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) {
946 LIST_DEL(&srule->list);
947 prune_acl_cond(srule->cond);
948 free(srule->cond);
949 free(srule);
950 }
951
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200952 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
953 LIST_DEL(&rule->list);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200954 prune_acl_cond(rule->cond);
955 free(rule->cond);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200956 free(rule);
957 }
958
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200959 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
960 LIST_DEL(&rdr->list);
Willy Tarreauf285f542010-01-03 20:03:03 +0100961 if (rdr->cond) {
962 prune_acl_cond(rdr->cond);
963 free(rdr->cond);
964 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200965 free(rdr->rdr_str);
966 free(rdr);
967 }
968
William Lallemand0f99e342011-10-12 17:50:54 +0200969 list_for_each_entry_safe(log, logb, &p->logsrvs, list) {
970 LIST_DEL(&log->list);
971 free(log);
972 }
973
William Lallemand723b73a2012-02-08 16:37:49 +0100974 list_for_each_entry_safe(lf, lfb, &p->logformat, list) {
975 LIST_DEL(&lf->list);
976 free(lf);
977 }
978
Simon Hormanac821422011-07-15 13:14:09 +0900979 deinit_tcp_rules(&p->tcp_req.inspect_rules);
980 deinit_tcp_rules(&p->tcp_req.l4_rules);
981
Simon Horman6fb82592011-07-15 13:14:11 +0900982 deinit_stick_rules(&p->storersp_rules);
983 deinit_stick_rules(&p->sticking_rules);
984
Willy Tarreaua534fea2008-08-03 12:19:50 +0200985 free(p->appsession_name);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200986
987 h = p->req_cap;
988 while (h) {
989 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +0200990 free(h->name);
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200991 pool_destroy2(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200992 free(h);
993 h = h_next;
994 }/* end while(h) */
995
996 h = p->rsp_cap;
997 while (h) {
998 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +0200999 free(h->name);
Willy Tarreaucf7f3202007-05-13 22:46:04 +02001000 pool_destroy2(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001001 free(h);
1002 h = h_next;
1003 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001004
Willy Tarreaubaaee002006-06-26 02:48:02 +02001005 s = p->srv;
1006 while (s) {
1007 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001008
1009 if (s->check) {
1010 task_delete(s->check);
1011 task_free(s->check);
1012 }
1013
Willy Tarreau2e993902011-10-31 11:53:20 +01001014 if (s->warmup) {
1015 task_delete(s->warmup);
1016 task_free(s->warmup);
1017 }
1018
Willy Tarreaua534fea2008-08-03 12:19:50 +02001019 free(s->id);
1020 free(s->cookie);
Nick Chalk57b1bf72010-03-16 15:50:46 +00001021 free(s->check_data);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001022 free(s);
1023 s = s_next;
1024 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001025
Willy Tarreau4348fad2012-09-20 16:48:07 +02001026 list_for_each_entry_safe(l, l_next, &p->conf.listeners, by_fe) {
Willy Tarreauf6e2cc72010-09-03 10:38:17 +02001027 unbind_listener(l);
1028 delete_listener(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02001029 LIST_DEL(&l->by_fe);
1030 LIST_DEL(&l->by_bind);
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01001031 free(l->name);
1032 free(l->counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001033 free(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02001034 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001035
Willy Tarreau4348fad2012-09-20 16:48:07 +02001036 /* Release unused SSL configs. */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02001037 list_for_each_entry_safe(bind_conf, bind_back, &p->conf.bind, by_fe) {
1038#ifdef USE_OPENSSL
1039 ssl_sock_free_all_ctx(bind_conf);
1040 free(bind_conf->ciphers);
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02001041#endif /* USE_OPENSSL */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02001042 free(bind_conf->file);
1043 free(bind_conf->arg);
1044 LIST_DEL(&bind_conf->by_fe);
1045 free(bind_conf);
1046 }
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02001047
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01001048 free(p->desc);
1049 free(p->fwdfor_hdr_name);
1050
Willy Tarreauff011f22011-01-06 17:51:27 +01001051 free_http_req_rules(&p->http_req_rules);
Willy Tarreau918ff602011-07-25 16:33:49 +02001052 free(p->task);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01001053
Willy Tarreaucf7f3202007-05-13 22:46:04 +02001054 pool_destroy2(p->req_cap_pool);
1055 pool_destroy2(p->rsp_cap_pool);
Simon Hormanb08584a2011-07-15 13:14:10 +09001056 pool_destroy2(p->table.pool);
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01001057
Willy Tarreau4d2d0982007-05-14 00:39:29 +02001058 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001059 p = p->next;
Willy Tarreau4d2d0982007-05-14 00:39:29 +02001060 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001061 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02001062
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001063 while (ua) {
1064 uap = ua;
1065 ua = ua->next;
1066
Willy Tarreaua534fea2008-08-03 12:19:50 +02001067 free(uap->uri_prefix);
1068 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02001069 free(uap->node);
1070 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001071
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01001072 userlist_free(uap->userlist);
Willy Tarreauff011f22011-01-06 17:51:27 +01001073 free_http_req_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01001074
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001075 free(uap);
1076 }
1077
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01001078 userlist_free(userlist);
1079
Willy Tarreaudd815982007-10-16 12:25:14 +02001080 protocol_unbind_all();
1081
Joe Williamsdf5b38f2010-12-29 17:05:48 +01001082 free(global.log_send_hostname); global.log_send_hostname = NULL;
Kevinm48936af2010-12-22 16:08:21 +00001083 free(global.log_tag); global.log_tag = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02001084 free(global.chroot); global.chroot = NULL;
1085 free(global.pidfile); global.pidfile = NULL;
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02001086 free(global.node); global.node = NULL;
1087 free(global.desc); global.desc = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02001088 free(fdtab); fdtab = NULL;
1089 free(oldpids); oldpids = NULL;
Willy Tarreaue9b26022011-08-01 20:57:55 +02001090 free(global_listener_queue_task); global_listener_queue_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001091
William Lallemand0f99e342011-10-12 17:50:54 +02001092 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
1093 LIST_DEL(&log->list);
1094 free(log);
1095 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01001096 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
1097 LIST_DEL(&wl->list);
1098 free(wl);
1099 }
1100
Willy Tarreauc6ca1a02007-05-13 19:43:47 +02001101 pool_destroy2(pool2_session);
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001102 pool_destroy2(pool2_channel);
Willy Tarreau332f8bf2007-05-13 21:36:56 +02001103 pool_destroy2(pool2_requri);
Willy Tarreauc6ca1a02007-05-13 19:43:47 +02001104 pool_destroy2(pool2_task);
Willy Tarreau086b3b42007-05-13 21:45:51 +02001105 pool_destroy2(pool2_capture);
Willy Tarreau63963c62007-05-13 21:29:55 +02001106 pool_destroy2(pool2_appsess);
Willy Tarreaue4d7e552007-05-13 20:19:55 +02001107 pool_destroy2(pool2_pendconn);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02001108 pool_destroy2(pool2_sig_handlers);
Willy Tarreau34eb6712011-10-24 18:15:04 +02001109 pool_destroy2(pool2_hdr_idx);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001110
1111 if (have_appsession) {
Willy Tarreau63963c62007-05-13 21:29:55 +02001112 pool_destroy2(apools.serverid);
1113 pool_destroy2(apools.sessid);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001114 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001115
1116 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001117} /* end deinit() */
1118
Willy Tarreaubb545b42010-08-25 12:58:59 +02001119/* sends the signal <sig> to all pids found in <oldpids>. Returns the number of
1120 * pids the signal was correctly delivered to.
1121 */
1122static int tell_old_pids(int sig)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001123{
1124 int p;
Willy Tarreaubb545b42010-08-25 12:58:59 +02001125 int ret = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001126 for (p = 0; p < nb_oldpids; p++)
Willy Tarreaubb545b42010-08-25 12:58:59 +02001127 if (kill(oldpids[p], sig) == 0)
1128 ret++;
1129 return ret;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001130}
1131
Willy Tarreau918ff602011-07-25 16:33:49 +02001132/* Runs the polling loop */
Willy Tarreau4f60f162007-04-08 16:39:58 +02001133void run_poll_loop()
1134{
Willy Tarreau0c303ee2008-07-07 00:09:58 +02001135 int next;
Willy Tarreau4f60f162007-04-08 16:39:58 +02001136
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001137 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02001138 while (1) {
Willy Tarreau29857942009-05-10 09:01:21 +02001139 /* check if we caught some signals and process them */
1140 signal_process_queue();
1141
Willy Tarreau58b458d2008-06-29 22:40:23 +02001142 /* Check if we can expire some tasks */
1143 wake_expired_tasks(&next);
1144
1145 /* Process a few tasks */
Willy Tarreaud825eef2007-05-12 22:35:00 +02001146 process_runnable_tasks(&next);
Willy Tarreau4f60f162007-04-08 16:39:58 +02001147
Willy Tarreauaf7ad002010-08-31 15:39:26 +02001148 /* stop when there's nothing left to do */
1149 if (jobs == 0)
Willy Tarreau4f60f162007-04-08 16:39:58 +02001150 break;
1151
Willy Tarreau58b458d2008-06-29 22:40:23 +02001152 /* The poller will ensure it returns around <next> */
Willy Tarreau0c303ee2008-07-07 00:09:58 +02001153 cur_poller.poll(&cur_poller, next);
Willy Tarreau4f60f162007-04-08 16:39:58 +02001154 }
1155}
1156
Willy Tarreaue9b26022011-08-01 20:57:55 +02001157/* This is the global management task for listeners. It enables listeners waiting
1158 * for global resources when there are enough free resource, or at least once in
1159 * a while. It is designed to be called as a task.
1160 */
1161static struct task *manage_global_listener_queue(struct task *t)
1162{
1163 int next = TICK_ETERNITY;
Willy Tarreaue9b26022011-08-01 20:57:55 +02001164 /* queue is empty, nothing to do */
1165 if (LIST_ISEMPTY(&global_listener_queue))
1166 goto out;
1167
1168 /* If there are still too many concurrent connections, let's wait for
1169 * some of them to go away. We don't need to re-arm the timer because
1170 * each of them will scan the queue anyway.
1171 */
1172 if (unlikely(actconn >= global.maxconn))
1173 goto out;
1174
1175 /* We should periodically try to enable listeners waiting for a global
1176 * resource here, because it is possible, though very unlikely, that
1177 * they have been blocked by a temporary lack of global resource such
1178 * as a file descriptor or memory and that the temporary condition has
1179 * disappeared.
1180 */
Willy Tarreauabacc2c2011-09-07 14:26:33 +02001181 dequeue_all_listeners(&global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +02001182
1183 out:
1184 t->expire = next;
1185 task_queue(t);
1186 return t;
1187}
Willy Tarreau4f60f162007-04-08 16:39:58 +02001188
Willy Tarreaubaaee002006-06-26 02:48:02 +02001189int main(int argc, char **argv)
1190{
1191 int err, retry;
1192 struct rlimit limit;
Emeric Bruncf20bf12010-10-22 16:06:11 +02001193 char errmsg[100];
Willy Tarreau269ab312012-09-05 08:02:48 +02001194 int pidfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001195
Emeric Bruncf20bf12010-10-22 16:06:11 +02001196 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02001197 signal_register_fct(SIGQUIT, dump, SIGQUIT);
1198 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
1199 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001200
Willy Tarreaue437c442010-03-17 18:02:46 +01001201 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
1202 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
1203 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02001204 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02001205 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001206
Willy Tarreaudc23a922011-02-16 11:10:36 +01001207 /* ulimits */
1208 if (!global.rlimit_nofile)
1209 global.rlimit_nofile = global.maxsock;
1210
1211 if (global.rlimit_nofile) {
1212 limit.rlim_cur = limit.rlim_max = global.rlimit_nofile;
1213 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
1214 Warning("[%s.main()] Cannot raise FD limit to %d.\n", argv[0], global.rlimit_nofile);
1215 }
1216 }
1217
1218 if (global.rlimit_memmax) {
1219 limit.rlim_cur = limit.rlim_max =
1220 global.rlimit_memmax * 1048576 / global.nbproc;
1221#ifdef RLIMIT_AS
1222 if (setrlimit(RLIMIT_AS, &limit) == -1) {
1223 Warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
1224 argv[0], global.rlimit_memmax);
1225 }
1226#else
1227 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
1228 Warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
1229 argv[0], global.rlimit_memmax);
1230 }
1231#endif
1232 }
1233
Willy Tarreaubaaee002006-06-26 02:48:02 +02001234 /* We will loop at most 100 times with 10 ms delay each time.
1235 * That's at most 1 second. We only send a signal to old pids
1236 * if we cannot grab at least one port.
1237 */
1238 retry = MAX_START_RETRIES;
1239 err = ERR_NONE;
1240 while (retry >= 0) {
1241 struct timeval w;
1242 err = start_proxies(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01001243 /* exit the loop on no error or fatal error */
1244 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001245 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02001246 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001247 break;
1248
1249 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
1250 * listening sockets. So on those platforms, it would be wiser to
1251 * simply send SIGUSR1, which will not be undoable.
1252 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02001253 if (tell_old_pids(SIGTTOU) == 0) {
1254 /* no need to wait if we can't contact old pids */
1255 retry = 0;
1256 continue;
1257 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001258 /* give some time to old processes to stop listening */
1259 w.tv_sec = 0;
1260 w.tv_usec = 10*1000;
1261 select(0, NULL, NULL, NULL, &w);
1262 retry--;
1263 }
1264
1265 /* Note: start_proxies() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01001266 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreauf68da462009-06-09 14:36:00 +02001267 if (retry != MAX_START_RETRIES && nb_oldpids) {
1268 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001269 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02001270 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001271 exit(1);
1272 }
1273
1274 if (listeners == 0) {
1275 Alert("[%s.main()] No enabled listener found (check the <listen> keywords) ! Exiting.\n", argv[0]);
1276 /* Note: we don't have to send anything to the old pids because we
1277 * never stopped them. */
1278 exit(1);
1279 }
1280
Emeric Bruncf20bf12010-10-22 16:06:11 +02001281 err = protocol_bind_all(errmsg, sizeof(errmsg));
1282 if ((err & ~ERR_WARN) != ERR_NONE) {
1283 if ((err & ERR_ALERT) || (err & ERR_WARN))
1284 Alert("[%s.main()] %s.\n", argv[0], errmsg);
1285
Willy Tarreaudd815982007-10-16 12:25:14 +02001286 Alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
1287 protocol_unbind_all(); /* cleanup everything we can */
1288 if (nb_oldpids)
1289 tell_old_pids(SIGTTIN);
1290 exit(1);
Emeric Bruncf20bf12010-10-22 16:06:11 +02001291 } else if (err & ERR_WARN) {
1292 Alert("[%s.main()] %s.\n", argv[0], errmsg);
Willy Tarreaudd815982007-10-16 12:25:14 +02001293 }
1294
Willy Tarreaubaaee002006-06-26 02:48:02 +02001295 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02001296 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
1297 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001298
Willy Tarreaubaaee002006-06-26 02:48:02 +02001299 /* MODE_QUIET can inhibit alerts and warnings below this line */
1300
1301 global.mode &= ~MODE_STARTING;
1302 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
1303 /* detach from the tty */
1304 fclose(stdin); fclose(stdout); fclose(stderr);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001305 }
1306
1307 /* open log & pid files before the chroot */
1308 if (global.mode & MODE_DAEMON && global.pidfile != NULL) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02001309 unlink(global.pidfile);
1310 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
1311 if (pidfd < 0) {
1312 Alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
1313 if (nb_oldpids)
1314 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02001315 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001316 exit(1);
1317 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001318 }
1319
Willy Tarreaub38651a2007-03-24 17:24:39 +01001320#ifdef CONFIG_HAP_CTTPROXY
1321 if (global.last_checks & LSTCHK_CTTPROXY) {
1322 int ret;
1323
1324 ret = check_cttproxy_version();
1325 if (ret < 0) {
1326 Alert("[%s.main()] Cannot enable cttproxy.\n%s",
1327 argv[0],
1328 (ret == -1) ? " Incorrect module version.\n"
1329 : " Make sure you have enough permissions and that the module is loaded.\n");
Willy Tarreaudd815982007-10-16 12:25:14 +02001330 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01001331 exit(1);
1332 }
1333 }
1334#endif
1335
1336 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
1337 Alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
Willy Tarreau4e30ed72009-02-04 18:02:48 +01001338 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02001339 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01001340 exit(1);
1341 }
1342
Willy Tarreau4e30ed72009-02-04 18:02:48 +01001343 /* If the user is not root, we'll still let him try the configuration
1344 * but we inform him that unexpected behaviour may occur.
1345 */
1346 if ((global.last_checks & LSTCHK_NETADM) && getuid())
1347 Warning("[%s.main()] Some options which require full privileges"
1348 " might not work well.\n"
1349 "", argv[0]);
1350
Willy Tarreauf223cc02007-10-15 18:57:08 +02001351 /* chroot if needed */
1352 if (global.chroot != NULL) {
Willy Tarreau21337822012-04-29 14:11:38 +02001353 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Willy Tarreauf223cc02007-10-15 18:57:08 +02001354 Alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
1355 if (nb_oldpids)
1356 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02001357 protocol_unbind_all();
Willy Tarreauf223cc02007-10-15 18:57:08 +02001358 exit(1);
1359 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02001360 }
1361
Willy Tarreaubaaee002006-06-26 02:48:02 +02001362 if (nb_oldpids)
Willy Tarreaubb545b42010-08-25 12:58:59 +02001363 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001364
1365 /* Note that any error at this stage will be fatal because we will not
1366 * be able to restart the old pids.
1367 */
1368
1369 /* setgid / setuid */
1370 if (global.gid && setgid(global.gid) == -1) {
1371 Alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
Willy Tarreaudd815982007-10-16 12:25:14 +02001372 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001373 exit(1);
1374 }
1375
1376 if (global.uid && setuid(global.uid) == -1) {
1377 Alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
Willy Tarreaudd815982007-10-16 12:25:14 +02001378 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001379 exit(1);
1380 }
1381
1382 /* check ulimits */
1383 limit.rlim_cur = limit.rlim_max = 0;
1384 getrlimit(RLIMIT_NOFILE, &limit);
1385 if (limit.rlim_cur < global.maxsock) {
1386 Warning("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. Please raise 'ulimit-n' to %d or more to avoid any trouble.\n",
Willy Tarreau1772ece2009-04-03 14:49:12 +02001387 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock, global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001388 }
1389
1390 if (global.mode & MODE_DAEMON) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01001391 struct proxy *px;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001392 int ret = 0;
1393 int proc;
1394
1395 /* the father launches the required number of processes */
1396 for (proc = 0; proc < global.nbproc; proc++) {
1397 ret = fork();
1398 if (ret < 0) {
1399 Alert("[%s.main()] Cannot fork.\n", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02001400 protocol_unbind_all();
Willy Tarreaud6803712007-10-16 07:44:56 +02001401 exit(1); /* there has been an error */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001402 }
1403 else if (ret == 0) /* child breaks here */
1404 break;
Willy Tarreau269ab312012-09-05 08:02:48 +02001405 if (pidfd >= 0) {
1406 char pidstr[100];
1407 snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
Willy Tarreauaa52bef2012-09-07 22:18:59 +02001408 if (write(pidfd, pidstr, strlen(pidstr)) < 0) /* shut gcc warning */;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001409 }
Willy Tarreaudcd47712007-11-04 23:35:08 +01001410 relative_pid++; /* each child will get a different one */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001411 }
1412 /* close the pidfile both in children and father */
Willy Tarreau269ab312012-09-05 08:02:48 +02001413 if (pidfd >= 0) {
1414 //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */
1415 close(pidfd);
1416 }
Willy Tarreaud137dd32010-08-25 12:49:05 +02001417
1418 /* We won't ever use this anymore */
1419 free(oldpids); oldpids = NULL;
1420 free(global.chroot); global.chroot = NULL;
1421 free(global.pidfile); global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001422
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01001423 /* we might have to unbind some proxies from some processes */
1424 px = proxy;
1425 while (px != NULL) {
1426 if (px->bind_proc && px->state != PR_STSTOPPED) {
1427 if (!(px->bind_proc & (1 << proc)))
1428 stop_proxy(px);
1429 }
1430 px = px->next;
1431 }
1432
Willy Tarreaubaaee002006-06-26 02:48:02 +02001433 if (proc == global.nbproc)
1434 exit(0); /* parent must leave */
1435
1436 /* if we're NOT in QUIET mode, we should now close the 3 first FDs to ensure
1437 * that we can detach from the TTY. We MUST NOT do it in other cases since
1438 * it would have already be done, and 0-2 would have been affected to listening
1439 * sockets
1440 */
Willy Tarreau106cb762008-11-16 07:40:34 +01001441 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02001442 /* detach from the tty */
1443 fclose(stdin); fclose(stdout); fclose(stderr);
Willy Tarreau106cb762008-11-16 07:40:34 +01001444 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001445 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
1446 }
1447 pid = getpid(); /* update child's pid */
1448 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02001449 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001450 }
1451
Willy Tarreaudd815982007-10-16 12:25:14 +02001452 protocol_enable_all();
Willy Tarreau4f60f162007-04-08 16:39:58 +02001453 /*
1454 * That's it : the central polling loop. Run until we stop.
1455 */
1456 run_poll_loop();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001457
1458 /* Free all Hash Keys and all Hash elements */
1459 appsession_cleanup();
1460 /* Do some cleanup */
1461 deinit();
1462
1463 exit(0);
1464}
1465
1466
1467/*
1468 * Local variables:
1469 * c-indent-level: 8
1470 * c-basic-offset: 8
1471 * End:
1472 */