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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * HA-Proxy : High Availability-enabled HTTP/TCP proxy
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003 * Copyright 2000-2012 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>
Willy Tarreaufc6c0322012-11-16 16:12:27 +010047#ifdef USE_CPU_AFFINITY
48#define __USE_GNU
49#include <sched.h>
50#undef __USE_GNU
51#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020052
53#ifdef DEBUG_FULL
54#include <assert.h>
55#endif
56
Willy Tarreau2dd0d472006-06-29 17:53:05 +020057#include <common/appsession.h>
58#include <common/base64.h>
59#include <common/cfgparse.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020060#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020061#include <common/compat.h>
62#include <common/config.h>
63#include <common/defaults.h>
Willy Tarreaud740bab2007-10-28 11:14:07 +010064#include <common/errors.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020065#include <common/memory.h>
66#include <common/mini-clist.h>
67#include <common/regex.h>
68#include <common/standard.h>
69#include <common/time.h>
70#include <common/uri_auth.h>
71#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020072
73#include <types/capture.h>
74#include <types/global.h>
Simon Hormanac821422011-07-15 13:14:09 +090075#include <types/proto_tcp.h>
76#include <types/acl.h>
Willy Tarreau3c63fd82011-09-07 18:00:47 +020077#include <types/peers.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020078
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +010079#include <proto/auth.h>
Willy Tarreau0fc45a72007-06-17 00:36:03 +020080#include <proto/acl.h>
Willy Tarreau2e845be2012-10-19 19:49:09 +020081#include <proto/arg.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020082#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020083#include <proto/channel.h>
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +020084#include <proto/checks.h>
Willy Tarreauf2943dc2012-10-26 20:10:28 +020085#include <proto/connection.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020086#include <proto/fd.h>
Willy Tarreau34eb6712011-10-24 18:15:04 +020087#include <proto/hdr_idx.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020088#include <proto/listener.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020089#include <proto/log.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +020090#include <proto/protocol.h>
Willy Tarreau80587432006-12-24 17:47:20 +010091#include <proto/proto_http.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020092#include <proto/proxy.h>
93#include <proto/queue.h>
94#include <proto/server.h>
Willy Tarreauc6ca1a02007-05-13 19:43:47 +020095#include <proto/session.h>
Willy Tarreau29857942009-05-10 09:01:21 +020096#include <proto/signal.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020097#include <proto/task.h>
98
Willy Tarreaub38651a2007-03-24 17:24:39 +010099#ifdef CONFIG_HAP_CTTPROXY
100#include <proto/cttproxy.h>
101#endif
102
Emeric Brunfc0421f2012-09-07 17:30:07 +0200103#ifdef USE_OPENSSL
104#include <proto/ssl_sock.h>
105#endif
106
Willy Tarreaubaaee002006-06-26 02:48:02 +0200107/*********************************************************************/
108
Cyril Bonté6162c432012-11-10 19:27:47 +0100109extern const struct comp_algo comp_algos[];
110
Willy Tarreaubaaee002006-06-26 02:48:02 +0200111/*********************************************************************/
112
Willy Tarreau477ecd82010-01-03 21:12:30 +0100113/* list of config files */
114static struct list cfg_cfgfiles = LIST_HEAD_INIT(cfg_cfgfiles);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200115int pid; /* current process id */
Willy Tarreau28156642007-11-26 16:13:36 +0100116int relative_pid = 1; /* process id starting at 1 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200117
118/* global options */
119struct global global = {
Willy Tarreau247a13a2012-11-15 17:38:15 +0100120 .nbproc = 1,
William Lallemand5f232402012-04-05 18:02:55 +0200121 .req_count = 0,
William Lallemand0f99e342011-10-12 17:50:54 +0200122 .logsrvs = LIST_HEAD_INIT(global.logsrvs),
Willy Tarreau96aa6b32012-11-12 15:52:53 +0100123#ifdef DEFAULT_MAXZLIBMEM
124 .maxzlibmem = DEFAULT_MAXZLIBMEM,
125#else
William Lallemand9d5f5482012-11-07 16:12:57 +0100126 .maxzlibmem = 0,
Willy Tarreau96aa6b32012-11-12 15:52:53 +0100127#endif
William Lallemandd85f9172012-11-09 17:05:39 +0100128 .comp_rate_lim = 0,
Emeric Bruned760922010-10-22 17:59:25 +0200129 .unix_bind = {
130 .ux = {
131 .uid = -1,
132 .gid = -1,
133 .mode = 0,
134 }
135 },
Willy Tarreau27a674e2009-08-17 07:23:33 +0200136 .tune = {
137 .bufsize = BUFSIZE,
138 .maxrewrite = MAXREWRITE,
Willy Tarreau43961d52010-10-04 20:39:20 +0200139 .chksize = BUFSIZE,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200140#ifdef USE_OPENSSL
Emeric Brun46635772012-11-14 11:32:56 +0100141 .sslcachesize = SSLCACHESIZE,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200142#endif
William Lallemanda509e4c2012-11-07 16:54:34 +0100143#ifdef USE_ZLIB
144 .zlibmemlevel = 8,
145 .zlibwindowsize = MAX_WBITS,
146#endif
William Lallemandf3747832012-11-09 12:33:10 +0100147 .comp_maxlevel = 1,
William Lallemanda509e4c2012-11-07 16:54:34 +0100148
149
Willy Tarreau27a674e2009-08-17 07:23:33 +0200150 },
Emeric Brun76d88952012-10-05 15:47:31 +0200151#ifdef USE_OPENSSL
152#ifdef DEFAULT_MAXSSLCONN
Willy Tarreau403edff2012-09-06 11:58:37 +0200153 .maxsslconn = DEFAULT_MAXSSLCONN,
154#endif
Emeric Brun76d88952012-10-05 15:47:31 +0200155#ifdef LISTEN_DEFAULT_CIPHERS
156 .listen_default_ciphers = LISTEN_DEFAULT_CIPHERS,
157#endif
158#ifdef CONNECT_DEFAULT_CIPHERS
159 .connect_default_ciphers = CONNECT_DEFAULT_CIPHERS,
160#endif
161#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200162 /* others NULL OK */
163};
164
165/*********************************************************************/
166
167int stopping; /* non zero means stopping in progress */
Willy Tarreauaf7ad002010-08-31 15:39:26 +0200168int jobs = 0; /* number of active jobs (conns, listeners, active tasks, ...) */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200169
170/* Here we store informations about the pids of the processes we may pause
171 * or kill. We will send them a signal every 10 ms until we can bind to all
172 * our ports. With 200 retries, that's about 2 seconds.
173 */
174#define MAX_START_RETRIES 200
Willy Tarreaubaaee002006-06-26 02:48:02 +0200175static int *oldpids = NULL;
176static int oldpids_sig; /* use USR1 or TERM */
177
178/* this is used to drain data, and as a temporary buffer for sprintf()... */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100179struct chunk trash = { };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200180
Willy Tarreau8096de92010-02-26 11:12:27 +0100181/* this buffer is always the same size as standard buffers and is used for
182 * swapping data inside a buffer.
183 */
184char *swap_buffer = NULL;
185
Willy Tarreaubb545b42010-08-25 12:58:59 +0200186int nb_oldpids = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200187const int zero = 0;
188const int one = 1;
Alexandre Cassen87ea5482007-10-11 20:48:58 +0200189const struct linger nolinger = { .l_onoff = 1, .l_linger = 0 };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200190
Willy Tarreau1d21e0a2010-03-12 21:58:54 +0100191char hostname[MAX_HOSTNAME_LEN];
Emeric Brun2b920a12010-09-23 18:30:22 +0200192char localpeer[MAX_HOSTNAME_LEN];
Willy Tarreaubaaee002006-06-26 02:48:02 +0200193
Willy Tarreau08ceb102011-07-24 22:58:00 +0200194/* list of the temporarily limited listeners because of lack of resource */
195struct list global_listener_queue = LIST_HEAD_INIT(global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +0200196struct task *global_listener_queue_task;
197static struct task *manage_global_listener_queue(struct task *t);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200198
199/*********************************************************************/
200/* general purpose functions ***************************************/
201/*********************************************************************/
202
203void display_version()
204{
205 printf("HA-Proxy version " HAPROXY_VERSION " " HAPROXY_DATE"\n");
Willy Tarreau9eeb57b2012-03-26 06:15:29 +0200206 printf("Copyright 2000-2012 Willy Tarreau <w@1wt.eu>\n\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200207}
208
Willy Tarreau7b066db2007-12-02 11:28:59 +0100209void display_build_opts()
210{
211 printf("Build options :"
212#ifdef BUILD_TARGET
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100213 "\n TARGET = " BUILD_TARGET
Willy Tarreau7b066db2007-12-02 11:28:59 +0100214#endif
215#ifdef BUILD_CPU
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100216 "\n CPU = " BUILD_CPU
Willy Tarreau7b066db2007-12-02 11:28:59 +0100217#endif
218#ifdef BUILD_CC
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100219 "\n CC = " BUILD_CC
220#endif
221#ifdef BUILD_CFLAGS
222 "\n CFLAGS = " BUILD_CFLAGS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100223#endif
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100224#ifdef BUILD_OPTIONS
225 "\n OPTIONS = " BUILD_OPTIONS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100226#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200227 "\n\nDefault settings :"
228 "\n maxconn = %d, bufsize = %d, maxrewrite = %d, maxpollevents = %d"
229 "\n\n",
230 DEFAULT_MAXCONN, BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
Willy Tarreaube5b6852009-10-03 18:57:08 +0200231
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100232 printf("Encrypted password support via crypt(3): "
233#ifdef CONFIG_HAP_CRYPT
234 "yes"
235#else
236 "no"
237#endif
238 "\n");
239
Cyril Bonté6162c432012-11-10 19:27:47 +0100240#ifdef USE_ZLIB
241 printf("Built with zlib version : " ZLIB_VERSION "\n");
242#else /* USE_ZLIB */
243 printf("Built without zlib support (USE_ZLIB not set)\n");
244#endif
245 printf("Compression algorithms supported :");
246 {
247 int i;
248
249 for (i = 0; comp_algos[i].name; i++) {
250 printf("%s %s", (i == 0 ? "" : ","), comp_algos[i].name);
251 }
252 if (i == 0) {
253 printf("none");
254 }
255 }
256 printf("\n");
257
Willy Tarreau1ee0e302012-09-10 07:16:05 +0200258#ifdef USE_OPENSSL
259 printf("Built with OpenSSL version : " OPENSSL_VERSION_TEXT "\n");
260 printf("OpenSSL library supports TLS extensions : "
261#if OPENSSL_VERSION_NUMBER < 0x00907000L
262 "no (library version too old)"
263#elif defined(OPENSSL_NO_TLSEXT)
264 "no (disabled via OPENSSL_NO_TLSEXT)"
265#else
266 "yes"
267#endif
268 "\n");
269 printf("OpenSSL library supports SNI : "
270#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
271 "yes"
272#else
273#ifdef OPENSSL_NO_TLSEXT
274 "no (because of OPENSSL_NO_TLSEXT)"
275#else
276 "no (version might be too old, 0.9.8f min needed)"
277#endif
278#endif
279 "\n");
280 printf("OpenSSL library supports prefer-server-ciphers : "
281#ifdef SSL_OP_CIPHER_SERVER_PREFERENCE
282 "yes"
283#else
284 "no (0.9.7 or later needed)"
285#endif
286 "\n");
287#else /* USE_OPENSSL */
288 printf("Built without OpenSSL support (USE_OPENSSL not set)\n");
289#endif
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100290 putchar('\n');
291
Willy Tarreaube5b6852009-10-03 18:57:08 +0200292 list_pollers(stdout);
293 putchar('\n');
Willy Tarreau7b066db2007-12-02 11:28:59 +0100294}
295
Willy Tarreaubaaee002006-06-26 02:48:02 +0200296/*
297 * This function prints the command line usage and exits
298 */
299void usage(char *name)
300{
301 display_version();
302 fprintf(stderr,
Willy Tarreau5d01a632009-06-22 16:02:30 +0200303 "Usage : %s [-f <cfgfile>]* [ -vdV"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200304 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200305 " [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100306 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200307 " -d enters debug mode ; -db only disables background mode.\n"
Willy Tarreau6e064432012-05-08 15:40:42 +0200308 " -dM[<byte>] poisons memory with <byte> (defaults to 0x50)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200309 " -V enters verbose mode (disables quiet mode)\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200310 " -D goes daemon ; -C changes to <dir> before loading files.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200311 " -q quiet mode : don't display messages\n"
Willy Tarreau5d01a632009-06-22 16:02:30 +0200312 " -c check mode : only check config files and exit\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200313 " -n sets the maximum total # of connections (%d)\n"
314 " -m limits the usable amount of memory (in MB)\n"
315 " -N sets the default, per-proxy maximum # of connections (%d)\n"
Emeric Brun2b920a12010-09-23 18:30:22 +0200316 " -L set local peer name (default to hostname)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200317 " -p writes pids of all children to this file\n"
318#if defined(ENABLE_EPOLL)
319 " -de disables epoll() usage even when available\n"
320#endif
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200321#if defined(ENABLE_KQUEUE)
322 " -dk disables kqueue() usage even when available\n"
323#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200324#if defined(ENABLE_POLL)
325 " -dp disables poll() usage even when available\n"
326#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +0200327#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100328 " -dS disables splice usage (broken on old kernels)\n"
329#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200330 " -sf/-st [pid ]* finishes/terminates old pids. Must be last arguments.\n"
331 "\n",
332 name, DEFAULT_MAXCONN, cfg_maxpconn);
333 exit(1);
334}
335
336
337
338/*********************************************************************/
339/* more specific functions ***************************************/
340/*********************************************************************/
341
342/*
Willy Tarreaud0807c32010-08-27 18:26:11 +0200343 * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
344 * a signal zero to all subscribers. This means that it's as easy as
345 * subscribing to signal 0 to get informed about an imminent shutdown.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200346 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200347void sig_soft_stop(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200348{
349 soft_stop();
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200350 signal_unregister_handler(sh);
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200351 pool_gc2();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200352}
353
354/*
355 * upon SIGTTOU, we pause everything
356 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200357void sig_pause(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200358{
359 pause_proxies();
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200360 pool_gc2();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200361}
362
363/*
364 * upon SIGTTIN, let's have a soft stop.
365 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200366void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200367{
Willy Tarreaube58c382011-07-24 18:28:10 +0200368 resume_proxies();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200369}
370
371/*
372 * this function dumps every server's state when the process receives SIGHUP.
373 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200374void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200375{
376 struct proxy *p = proxy;
377
378 Warning("SIGHUP received, dumping servers states.\n");
379 while (p) {
380 struct server *s = p->srv;
381
382 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
383 while (s) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100384 chunk_printf(&trash,
385 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
386 p->id, s->id,
387 (s->state & SRV_RUNNING) ? "UP" : "DOWN",
388 s->cur_sess, s->nbpend, s->counters.cum_sess);
389 Warning("%s\n", trash.str);
390 send_log(p, LOG_NOTICE, "%s\n", trash.str);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200391 s = s->next;
392 }
393
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200394 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
395 if (!p->srv) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100396 chunk_printf(&trash,
397 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
398 p->id,
399 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 +0200400 } else if (p->srv_act == 0) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100401 chunk_printf(&trash,
402 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
403 p->id,
404 (p->srv_bck) ? "is running on backup servers" : "has no server available",
405 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 +0200406 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100407 chunk_printf(&trash,
408 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
409 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
410 p->id, p->srv_act, p->srv_bck,
411 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 +0200412 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100413 Warning("%s\n", trash.str);
414 send_log(p, LOG_NOTICE, "%s\n", trash.str);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200415
416 p = p->next;
417 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200418}
419
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200420void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200421{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200422 /* dump memory usage then free everything possible */
423 dump_pools();
424 pool_gc2();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200425}
426
Willy Tarreaubaaee002006-06-26 02:48:02 +0200427/*
428 * This function initializes all the necessary variables. It only returns
429 * if everything is OK. If something fails, it exits.
430 */
431void init(int argc, char **argv)
432{
Willy Tarreaubaaee002006-06-26 02:48:02 +0200433 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200434 char *tmp;
435 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +0200436 int err_code = 0;
Willy Tarreau477ecd82010-01-03 21:12:30 +0100437 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +0000438 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +0200439 char *change_dir = NULL;
Yuxans Yao4e25b012012-10-19 10:36:09 +0800440 struct tm curtime;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200441
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100442 chunk_init(&trash, malloc(global.tune.bufsize), global.tune.bufsize);
David du Colombier7af46052012-05-16 14:16:48 +0200443
Emeric Brun2b920a12010-09-23 18:30:22 +0200444 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
445 * the string in case of truncation, and at least FreeBSD appears not to do
446 * it.
447 */
448 memset(hostname, 0, sizeof(hostname));
449 gethostname(hostname, sizeof(hostname) - 1);
450 memset(localpeer, 0, sizeof(localpeer));
451 memcpy(localpeer, hostname, (sizeof(hostname) > sizeof(localpeer) ? sizeof(localpeer) : sizeof(hostname)) - 1);
452
Willy Tarreaubaaee002006-06-26 02:48:02 +0200453 /*
454 * Initialize the previously static variables.
455 */
456
Willy Tarreau3eba98a2009-01-25 13:56:13 +0100457 totalconn = actconn = maxfd = listeners = stopping = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200458
459
460#ifdef HAPROXY_MEMMAX
461 global.rlimit_memmax = HAPROXY_MEMMAX;
462#endif
463
Willy Tarreaub0b37bc2008-06-23 14:00:57 +0200464 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200465 start_date = now;
466
Yuxans Yao4e25b012012-10-19 10:36:09 +0800467 /* Get the numeric timezone. */
468 get_localtime(start_date.tv_sec, &curtime);
469 strftime(localtimezone, 6, "%z", &curtime);
470
Willy Tarreau29857942009-05-10 09:01:21 +0200471 signal_init();
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200472 init_task();
473 init_session();
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200474 init_connection();
Willy Tarreau8280d642009-09-23 23:37:52 +0200475 /* warning, we init buffers later */
Willy Tarreaue4d7e552007-05-13 20:19:55 +0200476 init_pendconn();
Willy Tarreau80587432006-12-24 17:47:20 +0100477 init_proto_http();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200478
Willy Tarreau43b78992009-01-25 15:42:27 +0100479 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200480#if defined(ENABLE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +0100481 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200482#endif
483#if defined(ENABLE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +0100484 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200485#endif
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200486#if defined(ENABLE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +0100487 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200488#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +0200489#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100490 global.tune.options |= GTUNE_USE_SPLICE;
491#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200492
493 pid = getpid();
494 progname = *argv;
495 while ((tmp = strchr(progname, '/')) != NULL)
496 progname = tmp + 1;
497
Kevinm48936af2010-12-22 16:08:21 +0000498 /* the process name is used for the logs only */
499 global.log_tag = strdup(progname);
500
Willy Tarreaubaaee002006-06-26 02:48:02 +0200501 argc--; argv++;
502 while (argc > 0) {
503 char *flag;
504
505 if (**argv == '-') {
506 flag = *argv+1;
507
508 /* 1 arg */
509 if (*flag == 'v') {
510 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +0100511 if (flag[1] == 'v') /* -vv */
512 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200513 exit(0);
514 }
515#if defined(ENABLE_EPOLL)
516 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +0100517 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200518#endif
519#if defined(ENABLE_POLL)
520 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +0100521 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200522#endif
Willy Tarreau69cad1a2007-04-10 22:45:11 +0200523#if defined(ENABLE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200524 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +0100525 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200526#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +0200527#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100528 else if (*flag == 'd' && flag[1] == 'S')
529 global.tune.options &= ~GTUNE_USE_SPLICE;
530#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200531 else if (*flag == 'V')
532 arg_mode |= MODE_VERBOSE;
533 else if (*flag == 'd' && flag[1] == 'b')
534 arg_mode |= MODE_FOREGROUND;
Willy Tarreau6e064432012-05-08 15:40:42 +0200535 else if (*flag == 'd' && flag[1] == 'M')
536 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreaubaaee002006-06-26 02:48:02 +0200537 else if (*flag == 'd')
538 arg_mode |= MODE_DEBUG;
539 else if (*flag == 'c')
540 arg_mode |= MODE_CHECK;
541 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +0200542 arg_mode |= MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200543 else if (*flag == 'q')
544 arg_mode |= MODE_QUIET;
545 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
546 /* list of pids to finish ('f') or terminate ('t') */
547
548 if (flag[1] == 'f')
549 oldpids_sig = SIGUSR1; /* finish then exit */
550 else
551 oldpids_sig = SIGTERM; /* terminate immediately */
552 argv++; argc--;
553
554 if (argc > 0) {
555 oldpids = calloc(argc, sizeof(int));
556 while (argc > 0) {
557 oldpids[nb_oldpids] = atol(*argv);
558 if (oldpids[nb_oldpids] <= 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +0200559 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200560 argc--; argv++;
561 nb_oldpids++;
562 }
563 }
564 }
565 else { /* >=2 args */
566 argv++; argc--;
567 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +0200568 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200569
570 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +0200571 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200572 case 'n' : cfg_maxconn = atol(*argv); break;
573 case 'm' : global.rlimit_memmax = atol(*argv); break;
574 case 'N' : cfg_maxpconn = atol(*argv); break;
Emeric Brun2b920a12010-09-23 18:30:22 +0200575 case 'L' : strncpy(localpeer, *argv, sizeof(localpeer) - 1); break;
Willy Tarreau5d01a632009-06-22 16:02:30 +0200576 case 'f' :
Willy Tarreau477ecd82010-01-03 21:12:30 +0100577 wl = (struct wordlist *)calloc(1, sizeof(*wl));
578 if (!wl) {
579 Alert("Cannot load configuration file %s : out of memory.\n", *argv);
Willy Tarreau5d01a632009-06-22 16:02:30 +0200580 exit(1);
581 }
Willy Tarreau477ecd82010-01-03 21:12:30 +0100582 wl->s = *argv;
583 LIST_ADDQ(&cfg_cfgfiles, &wl->list);
Willy Tarreau5d01a632009-06-22 16:02:30 +0200584 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200585 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +0200586 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200587 }
588 }
589 }
590 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +0200591 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200592 argv++; argc--;
593 }
594
595 global.mode = MODE_STARTING | /* during startup, we want most of the alerts */
596 (arg_mode & (MODE_DAEMON | MODE_FOREGROUND | MODE_VERBOSE
597 | MODE_QUIET | MODE_CHECK | MODE_DEBUG));
598
Willy Tarreau477ecd82010-01-03 21:12:30 +0100599 if (LIST_ISEMPTY(&cfg_cfgfiles))
Willy Tarreau3bafcdc2011-09-10 19:20:23 +0200600 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200601
Willy Tarreau576132e2011-09-10 19:26:56 +0200602 if (change_dir && chdir(change_dir) < 0) {
603 Alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
604 exit(1);
605 }
606
Willy Tarreaubaaee002006-06-26 02:48:02 +0200607 have_appsession = 0;
608 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200609
610 init_default_instance();
611
Willy Tarreau477ecd82010-01-03 21:12:30 +0100612 list_for_each_entry(wl, &cfg_cfgfiles, list) {
Willy Tarreauc4382422009-12-06 13:10:44 +0100613 int ret;
614
Willy Tarreau477ecd82010-01-03 21:12:30 +0100615 ret = readcfgfile(wl->s);
Willy Tarreauc4382422009-12-06 13:10:44 +0100616 if (ret == -1) {
617 Alert("Could not open configuration file %s : %s\n",
Willy Tarreau477ecd82010-01-03 21:12:30 +0100618 wl->s, strerror(errno));
Willy Tarreauc4382422009-12-06 13:10:44 +0100619 exit(1);
620 }
Willy Tarreau25a67fa2009-12-15 21:46:25 +0100621 if (ret & (ERR_ABORT|ERR_FATAL))
Willy Tarreau477ecd82010-01-03 21:12:30 +0100622 Alert("Error(s) found in configuration file : %s\n", wl->s);
Willy Tarreau25a67fa2009-12-15 21:46:25 +0100623 err_code |= ret;
Willy Tarreau058e9072009-07-20 09:30:05 +0200624 if (err_code & ERR_ABORT)
Willy Tarreau5d01a632009-06-22 16:02:30 +0200625 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200626 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +0200627
Willy Tarreaubb925012009-07-23 13:36:36 +0200628 err_code |= check_config_validity();
629 if (err_code & (ERR_ABORT|ERR_FATAL)) {
630 Alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200631 exit(1);
632 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200633
634 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +0100635 struct peers *pr;
636 struct proxy *px;
637
638 for (pr = peers; pr; pr = pr->next)
639 if (pr->peers_fe)
640 break;
641
642 for (px = proxy; px; px = px->next)
Willy Tarreau4348fad2012-09-20 16:48:07 +0200643 if (px->state == PR_STNEW && !LIST_ISEMPTY(&px->conf.listeners))
Willy Tarreau8b15ba12012-02-02 17:48:18 +0100644 break;
645
646 if (pr || px) {
647 /* At least one peer or one listener has been found */
648 qfprintf(stdout, "Configuration file is valid\n");
649 exit(0);
650 }
651 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
652 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200653 }
654
Willy Tarreaue9b26022011-08-01 20:57:55 +0200655 global_listener_queue_task = task_new();
656 if (!global_listener_queue_task) {
657 Alert("Out of memory when initializing global task\n");
658 exit(1);
659 }
660 /* very simple initialization, users will queue the task if needed */
661 global_listener_queue_task->context = NULL; /* not even a context! */
662 global_listener_queue_task->process = manage_global_listener_queue;
663 global_listener_queue_task->expire = TICK_ETERNITY;
664
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200665 /* now we know the buffer size, we can initialize the channels and buffers */
666 init_channel();
Willy Tarreau9b28e032012-10-12 23:49:43 +0200667 init_buffer();
Willy Tarreau8280d642009-09-23 23:37:52 +0200668
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200669 if (have_appsession)
670 appsession_init();
671
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +0200672 if (start_checks() < 0)
673 exit(1);
674
Willy Tarreaubaaee002006-06-26 02:48:02 +0200675 if (cfg_maxconn > 0)
676 global.maxconn = cfg_maxconn;
677
678 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +0200679 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200680 global.pidfile = strdup(cfg_pidfile);
681 }
682
683 if (global.maxconn == 0)
684 global.maxconn = DEFAULT_MAXCONN;
685
Willy Tarreau66aa61f2009-01-18 21:44:07 +0100686 if (!global.maxpipes) {
687 /* maxpipes not specified. Count how many frontends and backends
688 * may be using splicing, and bound that to maxconn.
689 */
690 struct proxy *cur;
691 int nbfe = 0, nbbe = 0;
692
693 for (cur = proxy; cur; cur = cur->next) {
694 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
695 if (cur->cap & PR_CAP_FE)
696 nbfe += cur->maxconn;
697 if (cur->cap & PR_CAP_BE)
Willy Tarreauafb48762009-01-25 10:42:05 +0100698 nbbe += cur->fullconn ? cur->fullconn : global.maxconn;
Willy Tarreau66aa61f2009-01-18 21:44:07 +0100699 }
700 }
701 global.maxpipes = MAX(nbfe, nbbe);
702 if (global.maxpipes > global.maxconn)
703 global.maxpipes = global.maxconn;
Willy Tarreau686ac822009-01-25 14:06:58 +0100704 global.maxpipes /= 4;
Willy Tarreau66aa61f2009-01-18 21:44:07 +0100705 }
706
707
Willy Tarreauabacc2c2011-09-07 14:26:33 +0200708 global.hardmaxconn = global.maxconn; /* keep this max value */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200709 global.maxsock += global.maxconn * 2; /* each connection needs two sockets */
Willy Tarreau3ec79b92009-01-18 20:39:42 +0100710 global.maxsock += global.maxpipes * 2; /* each pipe needs two FDs */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200711
Willy Tarreau3c63fd82011-09-07 18:00:47 +0200712 if (global.stats_fe)
713 global.maxsock += global.stats_fe->maxconn;
714
715 if (peers) {
716 /* peers also need to bypass global maxconn */
717 struct peers *p = peers;
718
719 for (p = peers; p; p = p->next)
720 if (p->peers_fe)
721 global.maxsock += p->peers_fe->maxconn;
722 }
723
Willy Tarreau1db37712007-06-03 17:16:49 +0200724 if (global.tune.maxpollevents <= 0)
725 global.tune.maxpollevents = MAX_POLL_EVENTS;
726
Willy Tarreauf49d1df2009-03-01 08:35:41 +0100727 if (global.tune.maxaccept == 0) {
Willy Tarreau4827fd22011-07-22 21:59:59 +0200728 /* Note: we should not try to accept too many connections at once,
729 * because past one point we're significantly reducing the cache
730 * efficiency and the highest session rate significantly drops.
731 * Values between 15 and 35 seem fine on a Core i5 with 4M L3 cache.
732 */
Willy Tarreaua0250ba2008-01-06 11:22:57 +0100733 if (global.nbproc > 1)
734 global.tune.maxaccept = 8; /* leave some conns to other processes */
735 else
Willy Tarreau4827fd22011-07-22 21:59:59 +0200736 global.tune.maxaccept = 32; /* accept more incoming conns at once */
Willy Tarreaua0250ba2008-01-06 11:22:57 +0100737 }
738
Willy Tarreau6f4a82c2009-03-21 20:43:57 +0100739 if (global.tune.recv_enough == 0)
740 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
741
Willy Tarreau27a674e2009-08-17 07:23:33 +0200742 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
743 global.tune.maxrewrite = global.tune.bufsize / 2;
744
Willy Tarreaubaaee002006-06-26 02:48:02 +0200745 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
746 /* command line debug mode inhibits configuration mode */
747 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreau772f0dd2012-10-26 16:04:28 +0200748 global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND));
749 }
750
751 if (arg_mode & MODE_DAEMON) {
752 /* command line daemon mode inhibits foreground and debug modes mode */
753 global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND);
754 global.mode |= (arg_mode & MODE_DAEMON);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200755 }
Willy Tarreau772f0dd2012-10-26 16:04:28 +0200756
757 global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200758
759 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
760 Warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
761 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
762 }
763
764 if ((global.nbproc > 1) && !(global.mode & MODE_DAEMON)) {
765 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
766 Warning("<nbproc> is only meaningful in daemon mode. Setting limit to 1 process.\n");
767 global.nbproc = 1;
768 }
769
770 if (global.nbproc < 1)
771 global.nbproc = 1;
772
Willy Tarreau8096de92010-02-26 11:12:27 +0100773 swap_buffer = (char *)calloc(1, global.tune.bufsize);
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100774 sample_trash_buf1 = (char *)calloc(1, global.tune.bufsize);
775 sample_trash_buf2 = (char *)calloc(1, global.tune.bufsize);
776 get_http_auth_buff = (char *)calloc(1, global.tune.bufsize);
Willy Tarreau07115412012-10-29 21:56:59 +0100777 static_table_key = calloc(1, sizeof(*static_table_key) + global.tune.bufsize);
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100778
Willy Tarreau8096de92010-02-26 11:12:27 +0100779
Willy Tarreau8d5d77e2009-10-18 07:25:52 +0200780 fdinfo = (struct fdinfo *)calloc(1,
781 sizeof(struct fdinfo) * (global.maxsock));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200782 fdtab = (struct fdtab *)calloc(1,
783 sizeof(struct fdtab) * (global.maxsock));
Willy Tarreauef1d1f82007-04-16 00:25:25 +0200784 /*
785 * Note: we could register external pollers here.
786 * Built-in pollers have been registered before main().
787 */
Willy Tarreau4f60f162007-04-08 16:39:58 +0200788
Willy Tarreau43b78992009-01-25 15:42:27 +0100789 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200790 disable_poller("kqueue");
791
Willy Tarreau43b78992009-01-25 15:42:27 +0100792 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +0200793 disable_poller("epoll");
794
Willy Tarreau43b78992009-01-25 15:42:27 +0100795 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +0200796 disable_poller("poll");
797
Willy Tarreau43b78992009-01-25 15:42:27 +0100798 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +0200799 disable_poller("select");
800
801 /* Note: we could disable any poller by name here */
802
Willy Tarreau2ff76222007-04-09 19:29:56 +0200803 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
804 list_pollers(stderr);
805
Willy Tarreau4f60f162007-04-08 16:39:58 +0200806 if (!init_pollers()) {
Willy Tarreau2ff76222007-04-09 19:29:56 +0200807 Alert("No polling mechanism available.\n");
Willy Tarreau4f60f162007-04-08 16:39:58 +0200808 exit(1);
809 }
Willy Tarreau2ff76222007-04-09 19:29:56 +0200810 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
811 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +0200812 }
813
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +0200814 if (!global.node)
815 global.node = strdup(hostname);
816
Willy Tarreaubaaee002006-06-26 02:48:02 +0200817}
818
Simon Horman6fb82592011-07-15 13:14:11 +0900819static void deinit_acl_cond(struct acl_cond *cond)
Simon Hormanac821422011-07-15 13:14:09 +0900820{
Simon Hormanac821422011-07-15 13:14:09 +0900821 struct acl_term_suite *suite, *suiteb;
822 struct acl_term *term, *termb;
823
Simon Horman6fb82592011-07-15 13:14:11 +0900824 if (!cond)
825 return;
826
827 list_for_each_entry_safe(suite, suiteb, &cond->suites, list) {
828 list_for_each_entry_safe(term, termb, &suite->terms, list) {
829 LIST_DEL(&term->list);
830 free(term);
Simon Hormanac821422011-07-15 13:14:09 +0900831 }
Simon Horman6fb82592011-07-15 13:14:11 +0900832 LIST_DEL(&suite->list);
833 free(suite);
834 }
835
836 free(cond);
837}
838
839static void deinit_tcp_rules(struct list *rules)
840{
841 struct tcp_rule *trule, *truleb;
842
843 list_for_each_entry_safe(trule, truleb, rules, list) {
Simon Hormanac821422011-07-15 13:14:09 +0900844 LIST_DEL(&trule->list);
Simon Horman6fb82592011-07-15 13:14:11 +0900845 deinit_acl_cond(trule->cond);
Simon Hormanac821422011-07-15 13:14:09 +0900846 free(trule);
847 }
848}
849
Willy Tarreau12785782012-04-27 21:37:17 +0200850static void deinit_sample_arg(struct arg *p)
Simon Horman6fb82592011-07-15 13:14:11 +0900851{
Willy Tarreauf9954102012-04-20 14:03:29 +0200852 struct arg *p_back = p;
853
Simon Horman6fb82592011-07-15 13:14:11 +0900854 if (!p)
855 return;
856
Willy Tarreauf9954102012-04-20 14:03:29 +0200857 while (p->type != ARGT_STOP) {
Willy Tarreau496aa012012-06-01 10:38:29 +0200858 if (p->type == ARGT_STR || p->unresolved) {
Willy Tarreauf9954102012-04-20 14:03:29 +0200859 free(p->data.str.str);
860 p->data.str.str = NULL;
Willy Tarreau496aa012012-06-01 10:38:29 +0200861 p->unresolved = 0;
Willy Tarreauecfb8e82012-04-20 12:29:52 +0200862 }
Willy Tarreauf9954102012-04-20 14:03:29 +0200863 p++;
Willy Tarreauecfb8e82012-04-20 12:29:52 +0200864 }
Simon Horman6fb82592011-07-15 13:14:11 +0900865
Willy Tarreau2e845be2012-10-19 19:49:09 +0200866 if (p_back != empty_arg_list)
867 free(p_back);
Simon Horman6fb82592011-07-15 13:14:11 +0900868}
869
870static void deinit_stick_rules(struct list *rules)
871{
872 struct sticking_rule *rule, *ruleb;
873
874 list_for_each_entry_safe(rule, ruleb, rules, list) {
875 LIST_DEL(&rule->list);
876 deinit_acl_cond(rule->cond);
877 if (rule->expr) {
Willy Tarreau12785782012-04-27 21:37:17 +0200878 struct sample_conv_expr *conv_expr, *conv_exprb;
Simon Horman6fb82592011-07-15 13:14:11 +0900879 list_for_each_entry_safe(conv_expr, conv_exprb, &rule->expr->conv_exprs, list)
Willy Tarreau12785782012-04-27 21:37:17 +0200880 deinit_sample_arg(conv_expr->arg_p);
881 deinit_sample_arg(rule->expr->arg_p);
Simon Horman6fb82592011-07-15 13:14:11 +0900882 free(rule->expr);
883 }
884 free(rule);
885 }
886}
887
Willy Tarreaubaaee002006-06-26 02:48:02 +0200888void deinit(void)
889{
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200890 struct proxy *p = proxy, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200891 struct cap_hdr *h,*h_next;
892 struct server *s,*s_next;
893 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200894 struct acl_cond *cond, *condb;
895 struct hdr_exp *exp, *expb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200896 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200897 struct switching_rule *rule, *ruleb;
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200898 struct server_rule *srule, *sruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200899 struct redirect_rule *rdr, *rdrb;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100900 struct wordlist *wl, *wlb;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100901 struct cond_wordlist *cwl, *cwlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200902 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +0200903 struct logsrv *log, *logb;
William Lallemand723b73a2012-02-08 16:37:49 +0100904 struct logformat_node *lf, *lfb;
Willy Tarreau2a65ff02012-09-13 17:54:29 +0200905 struct bind_conf *bind_conf, *bind_back;
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200906 int i;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200907
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200908 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200909 while (p) {
Willy Tarreau8113a5d2012-10-04 08:01:43 +0200910 free(p->conf.file);
Willy Tarreaua534fea2008-08-03 12:19:50 +0200911 free(p->id);
912 free(p->check_req);
913 free(p->cookie_name);
914 free(p->cookie_domain);
915 free(p->url_param_name);
916 free(p->capture_name);
917 free(p->monitor_uri);
Simon Hormana31c7f72011-07-15 13:14:08 +0900918 free(p->rdp_cookie_name);
Willy Tarreau39b06652012-06-01 10:58:06 +0200919 if (p->logformat_string != default_http_log_format &&
920 p->logformat_string != default_tcp_log_format &&
921 p->logformat_string != clf_http_log_format)
Willy Tarreau196729e2012-05-31 19:30:26 +0200922 free(p->logformat_string);
923
924 free(p->uniqueid_format_string);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200925
Willy Tarreaua534fea2008-08-03 12:19:50 +0200926 for (i = 0; i < HTTP_ERR_SIZE; i++)
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200927 chunk_destroy(&p->errmsg[i]);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200928
Willy Tarreauf4f04122010-01-28 18:10:50 +0100929 list_for_each_entry_safe(cwl, cwlb, &p->req_add, list) {
930 LIST_DEL(&cwl->list);
931 free(cwl->s);
932 free(cwl);
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100933 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200934
Willy Tarreauf4f04122010-01-28 18:10:50 +0100935 list_for_each_entry_safe(cwl, cwlb, &p->rsp_add, list) {
936 LIST_DEL(&cwl->list);
937 free(cwl->s);
938 free(cwl);
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100939 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200940
941 list_for_each_entry_safe(cond, condb, &p->block_cond, list) {
942 LIST_DEL(&cond->list);
943 prune_acl_cond(cond);
944 free(cond);
945 }
946
Willy Tarreaub80c2302007-11-30 20:51:32 +0100947 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
948 LIST_DEL(&cond->list);
949 prune_acl_cond(cond);
950 free(cond);
951 }
952
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200953 for (exp = p->req_exp; exp != NULL; ) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200954 if (exp->preg) {
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200955 regfree((regex_t *)exp->preg);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200956 free((regex_t *)exp->preg);
957 }
958
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200959 if (exp->replace && exp->action != ACT_SETBE)
960 free((char *)exp->replace);
961 expb = exp;
962 exp = exp->next;
963 free(expb);
964 }
965
966 for (exp = p->rsp_exp; exp != NULL; ) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200967 if (exp->preg) {
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200968 regfree((regex_t *)exp->preg);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200969 free((regex_t *)exp->preg);
970 }
971
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200972 if (exp->replace && exp->action != ACT_SETBE)
973 free((char *)exp->replace);
974 expb = exp;
975 exp = exp->next;
976 free(expb);
977 }
978
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200979 /* build a list of unique uri_auths */
980 if (!ua)
981 ua = p->uri_auth;
982 else {
983 /* check if p->uri_auth is unique */
984 for (uap = ua; uap; uap=uap->next)
985 if (uap == p->uri_auth)
986 break;
987
Willy Tarreauaccc4e12008-06-24 11:14:45 +0200988 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200989 /* add it, if it is */
990 p->uri_auth->next = ua;
991 ua = p->uri_auth;
992 }
993 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200994
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200995 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
996 LIST_DEL(&acl->list);
997 prune_acl(acl);
998 free(acl);
999 }
1000
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001001 list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) {
1002 LIST_DEL(&srule->list);
1003 prune_acl_cond(srule->cond);
1004 free(srule->cond);
1005 free(srule);
1006 }
1007
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001008 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
1009 LIST_DEL(&rule->list);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001010 prune_acl_cond(rule->cond);
1011 free(rule->cond);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001012 free(rule);
1013 }
1014
Willy Tarreaub463dfb2008-06-07 23:08:56 +02001015 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
1016 LIST_DEL(&rdr->list);
Willy Tarreauf285f542010-01-03 20:03:03 +01001017 if (rdr->cond) {
1018 prune_acl_cond(rdr->cond);
1019 free(rdr->cond);
1020 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02001021 free(rdr->rdr_str);
1022 free(rdr);
1023 }
1024
William Lallemand0f99e342011-10-12 17:50:54 +02001025 list_for_each_entry_safe(log, logb, &p->logsrvs, list) {
1026 LIST_DEL(&log->list);
1027 free(log);
1028 }
1029
William Lallemand723b73a2012-02-08 16:37:49 +01001030 list_for_each_entry_safe(lf, lfb, &p->logformat, list) {
1031 LIST_DEL(&lf->list);
1032 free(lf);
1033 }
1034
Simon Hormanac821422011-07-15 13:14:09 +09001035 deinit_tcp_rules(&p->tcp_req.inspect_rules);
1036 deinit_tcp_rules(&p->tcp_req.l4_rules);
1037
Simon Horman6fb82592011-07-15 13:14:11 +09001038 deinit_stick_rules(&p->storersp_rules);
1039 deinit_stick_rules(&p->sticking_rules);
1040
Willy Tarreaua534fea2008-08-03 12:19:50 +02001041 free(p->appsession_name);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001042
1043 h = p->req_cap;
1044 while (h) {
1045 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02001046 free(h->name);
Willy Tarreaucf7f3202007-05-13 22:46:04 +02001047 pool_destroy2(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001048 free(h);
1049 h = h_next;
1050 }/* end while(h) */
1051
1052 h = p->rsp_cap;
1053 while (h) {
1054 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02001055 free(h->name);
Willy Tarreaucf7f3202007-05-13 22:46:04 +02001056 pool_destroy2(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001057 free(h);
1058 h = h_next;
1059 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001060
Willy Tarreaubaaee002006-06-26 02:48:02 +02001061 s = p->srv;
1062 while (s) {
1063 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001064
Willy Tarreau5b3a2022012-09-28 15:01:02 +02001065 if (s->check.task) {
1066 task_delete(s->check.task);
1067 task_free(s->check.task);
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001068 }
1069
Willy Tarreau2e993902011-10-31 11:53:20 +01001070 if (s->warmup) {
1071 task_delete(s->warmup);
1072 task_free(s->warmup);
1073 }
1074
Willy Tarreaua534fea2008-08-03 12:19:50 +02001075 free(s->id);
1076 free(s->cookie);
Willy Tarreau1ae1b7b2012-09-28 15:28:30 +02001077 free(s->check.bi);
1078 free(s->check.bo);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001079 free(s);
1080 s = s_next;
1081 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001082
Willy Tarreau4348fad2012-09-20 16:48:07 +02001083 list_for_each_entry_safe(l, l_next, &p->conf.listeners, by_fe) {
Willy Tarreauf6e2cc72010-09-03 10:38:17 +02001084 unbind_listener(l);
1085 delete_listener(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02001086 LIST_DEL(&l->by_fe);
1087 LIST_DEL(&l->by_bind);
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01001088 free(l->name);
1089 free(l->counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001090 free(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02001091 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001092
Willy Tarreau4348fad2012-09-20 16:48:07 +02001093 /* Release unused SSL configs. */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02001094 list_for_each_entry_safe(bind_conf, bind_back, &p->conf.bind, by_fe) {
1095#ifdef USE_OPENSSL
1096 ssl_sock_free_all_ctx(bind_conf);
Emeric Brunfb510ea2012-10-05 12:00:26 +02001097 free(bind_conf->ca_file);
Willy Tarreau2a65ff02012-09-13 17:54:29 +02001098 free(bind_conf->ciphers);
Emeric Brun2b58d042012-09-20 17:10:03 +02001099 free(bind_conf->ecdhe);
Emeric Brunfb510ea2012-10-05 12:00:26 +02001100 free(bind_conf->crl_file);
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02001101#endif /* USE_OPENSSL */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02001102 free(bind_conf->file);
1103 free(bind_conf->arg);
1104 LIST_DEL(&bind_conf->by_fe);
1105 free(bind_conf);
1106 }
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02001107
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01001108 free(p->desc);
1109 free(p->fwdfor_hdr_name);
1110
Willy Tarreauff011f22011-01-06 17:51:27 +01001111 free_http_req_rules(&p->http_req_rules);
Willy Tarreau918ff602011-07-25 16:33:49 +02001112 free(p->task);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01001113
Willy Tarreaucf7f3202007-05-13 22:46:04 +02001114 pool_destroy2(p->req_cap_pool);
1115 pool_destroy2(p->rsp_cap_pool);
Simon Hormanb08584a2011-07-15 13:14:10 +09001116 pool_destroy2(p->table.pool);
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01001117
Willy Tarreau4d2d0982007-05-14 00:39:29 +02001118 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001119 p = p->next;
Willy Tarreau4d2d0982007-05-14 00:39:29 +02001120 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001121 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02001122
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001123 while (ua) {
1124 uap = ua;
1125 ua = ua->next;
1126
Willy Tarreaua534fea2008-08-03 12:19:50 +02001127 free(uap->uri_prefix);
1128 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02001129 free(uap->node);
1130 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001131
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01001132 userlist_free(uap->userlist);
Willy Tarreauff011f22011-01-06 17:51:27 +01001133 free_http_req_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01001134
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001135 free(uap);
1136 }
1137
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01001138 userlist_free(userlist);
1139
Willy Tarreaudd815982007-10-16 12:25:14 +02001140 protocol_unbind_all();
1141
Joe Williamsdf5b38f2010-12-29 17:05:48 +01001142 free(global.log_send_hostname); global.log_send_hostname = NULL;
Kevinm48936af2010-12-22 16:08:21 +00001143 free(global.log_tag); global.log_tag = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02001144 free(global.chroot); global.chroot = NULL;
1145 free(global.pidfile); global.pidfile = NULL;
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02001146 free(global.node); global.node = NULL;
1147 free(global.desc); global.desc = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02001148 free(fdtab); fdtab = NULL;
1149 free(oldpids); oldpids = NULL;
Willy Tarreaue9b26022011-08-01 20:57:55 +02001150 free(global_listener_queue_task); global_listener_queue_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001151
William Lallemand0f99e342011-10-12 17:50:54 +02001152 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
1153 LIST_DEL(&log->list);
1154 free(log);
1155 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01001156 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
1157 LIST_DEL(&wl->list);
1158 free(wl);
1159 }
1160
Willy Tarreauc6ca1a02007-05-13 19:43:47 +02001161 pool_destroy2(pool2_session);
Willy Tarreauf2943dc2012-10-26 20:10:28 +02001162 pool_destroy2(pool2_connection);
Willy Tarreau9b28e032012-10-12 23:49:43 +02001163 pool_destroy2(pool2_buffer);
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001164 pool_destroy2(pool2_channel);
Willy Tarreau332f8bf2007-05-13 21:36:56 +02001165 pool_destroy2(pool2_requri);
Willy Tarreauc6ca1a02007-05-13 19:43:47 +02001166 pool_destroy2(pool2_task);
Willy Tarreau086b3b42007-05-13 21:45:51 +02001167 pool_destroy2(pool2_capture);
Willy Tarreau63963c62007-05-13 21:29:55 +02001168 pool_destroy2(pool2_appsess);
Willy Tarreaue4d7e552007-05-13 20:19:55 +02001169 pool_destroy2(pool2_pendconn);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02001170 pool_destroy2(pool2_sig_handlers);
Willy Tarreau34eb6712011-10-24 18:15:04 +02001171 pool_destroy2(pool2_hdr_idx);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001172
1173 if (have_appsession) {
Willy Tarreau63963c62007-05-13 21:29:55 +02001174 pool_destroy2(apools.serverid);
1175 pool_destroy2(apools.sessid);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001176 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001177
1178 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001179} /* end deinit() */
1180
Willy Tarreaubb545b42010-08-25 12:58:59 +02001181/* sends the signal <sig> to all pids found in <oldpids>. Returns the number of
1182 * pids the signal was correctly delivered to.
1183 */
1184static int tell_old_pids(int sig)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001185{
1186 int p;
Willy Tarreaubb545b42010-08-25 12:58:59 +02001187 int ret = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001188 for (p = 0; p < nb_oldpids; p++)
Willy Tarreaubb545b42010-08-25 12:58:59 +02001189 if (kill(oldpids[p], sig) == 0)
1190 ret++;
1191 return ret;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001192}
1193
Willy Tarreau918ff602011-07-25 16:33:49 +02001194/* Runs the polling loop */
Willy Tarreau4f60f162007-04-08 16:39:58 +02001195void run_poll_loop()
1196{
Willy Tarreau0c303ee2008-07-07 00:09:58 +02001197 int next;
Willy Tarreau4f60f162007-04-08 16:39:58 +02001198
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001199 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02001200 while (1) {
Willy Tarreau29857942009-05-10 09:01:21 +02001201 /* check if we caught some signals and process them */
1202 signal_process_queue();
1203
Willy Tarreau58b458d2008-06-29 22:40:23 +02001204 /* Check if we can expire some tasks */
1205 wake_expired_tasks(&next);
1206
1207 /* Process a few tasks */
Willy Tarreaud825eef2007-05-12 22:35:00 +02001208 process_runnable_tasks(&next);
Willy Tarreau4f60f162007-04-08 16:39:58 +02001209
Willy Tarreauaf7ad002010-08-31 15:39:26 +02001210 /* stop when there's nothing left to do */
1211 if (jobs == 0)
Willy Tarreau4f60f162007-04-08 16:39:58 +02001212 break;
1213
Willy Tarreau58b458d2008-06-29 22:40:23 +02001214 /* The poller will ensure it returns around <next> */
Willy Tarreau0c303ee2008-07-07 00:09:58 +02001215 cur_poller.poll(&cur_poller, next);
Willy Tarreau09f24562012-11-11 16:43:45 +01001216 fd_process_spec_events();
Willy Tarreau4f60f162007-04-08 16:39:58 +02001217 }
1218}
1219
Willy Tarreaue9b26022011-08-01 20:57:55 +02001220/* This is the global management task for listeners. It enables listeners waiting
1221 * for global resources when there are enough free resource, or at least once in
1222 * a while. It is designed to be called as a task.
1223 */
1224static struct task *manage_global_listener_queue(struct task *t)
1225{
1226 int next = TICK_ETERNITY;
Willy Tarreaue9b26022011-08-01 20:57:55 +02001227 /* queue is empty, nothing to do */
1228 if (LIST_ISEMPTY(&global_listener_queue))
1229 goto out;
1230
1231 /* If there are still too many concurrent connections, let's wait for
1232 * some of them to go away. We don't need to re-arm the timer because
1233 * each of them will scan the queue anyway.
1234 */
1235 if (unlikely(actconn >= global.maxconn))
1236 goto out;
1237
1238 /* We should periodically try to enable listeners waiting for a global
1239 * resource here, because it is possible, though very unlikely, that
1240 * they have been blocked by a temporary lack of global resource such
1241 * as a file descriptor or memory and that the temporary condition has
1242 * disappeared.
1243 */
Willy Tarreauabacc2c2011-09-07 14:26:33 +02001244 dequeue_all_listeners(&global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +02001245
1246 out:
1247 t->expire = next;
1248 task_queue(t);
1249 return t;
1250}
Willy Tarreau4f60f162007-04-08 16:39:58 +02001251
Willy Tarreaubaaee002006-06-26 02:48:02 +02001252int main(int argc, char **argv)
1253{
1254 int err, retry;
1255 struct rlimit limit;
Emeric Bruncf20bf12010-10-22 16:06:11 +02001256 char errmsg[100];
Willy Tarreau269ab312012-09-05 08:02:48 +02001257 int pidfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001258
Emeric Bruncf20bf12010-10-22 16:06:11 +02001259 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02001260 signal_register_fct(SIGQUIT, dump, SIGQUIT);
1261 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
1262 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001263
Willy Tarreaue437c442010-03-17 18:02:46 +01001264 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
1265 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
1266 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02001267 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02001268 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001269
Willy Tarreaudc23a922011-02-16 11:10:36 +01001270 /* ulimits */
1271 if (!global.rlimit_nofile)
1272 global.rlimit_nofile = global.maxsock;
1273
1274 if (global.rlimit_nofile) {
1275 limit.rlim_cur = limit.rlim_max = global.rlimit_nofile;
1276 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
1277 Warning("[%s.main()] Cannot raise FD limit to %d.\n", argv[0], global.rlimit_nofile);
1278 }
1279 }
1280
1281 if (global.rlimit_memmax) {
1282 limit.rlim_cur = limit.rlim_max =
1283 global.rlimit_memmax * 1048576 / global.nbproc;
1284#ifdef RLIMIT_AS
1285 if (setrlimit(RLIMIT_AS, &limit) == -1) {
1286 Warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
1287 argv[0], global.rlimit_memmax);
1288 }
1289#else
1290 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
1291 Warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
1292 argv[0], global.rlimit_memmax);
1293 }
1294#endif
1295 }
1296
Willy Tarreaubaaee002006-06-26 02:48:02 +02001297 /* We will loop at most 100 times with 10 ms delay each time.
1298 * That's at most 1 second. We only send a signal to old pids
1299 * if we cannot grab at least one port.
1300 */
1301 retry = MAX_START_RETRIES;
1302 err = ERR_NONE;
1303 while (retry >= 0) {
1304 struct timeval w;
1305 err = start_proxies(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01001306 /* exit the loop on no error or fatal error */
1307 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001308 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02001309 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001310 break;
1311
1312 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
1313 * listening sockets. So on those platforms, it would be wiser to
1314 * simply send SIGUSR1, which will not be undoable.
1315 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02001316 if (tell_old_pids(SIGTTOU) == 0) {
1317 /* no need to wait if we can't contact old pids */
1318 retry = 0;
1319 continue;
1320 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001321 /* give some time to old processes to stop listening */
1322 w.tv_sec = 0;
1323 w.tv_usec = 10*1000;
1324 select(0, NULL, NULL, NULL, &w);
1325 retry--;
1326 }
1327
1328 /* Note: start_proxies() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01001329 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreauf68da462009-06-09 14:36:00 +02001330 if (retry != MAX_START_RETRIES && nb_oldpids) {
1331 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001332 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02001333 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001334 exit(1);
1335 }
1336
1337 if (listeners == 0) {
1338 Alert("[%s.main()] No enabled listener found (check the <listen> keywords) ! Exiting.\n", argv[0]);
1339 /* Note: we don't have to send anything to the old pids because we
1340 * never stopped them. */
1341 exit(1);
1342 }
1343
Emeric Bruncf20bf12010-10-22 16:06:11 +02001344 err = protocol_bind_all(errmsg, sizeof(errmsg));
1345 if ((err & ~ERR_WARN) != ERR_NONE) {
1346 if ((err & ERR_ALERT) || (err & ERR_WARN))
1347 Alert("[%s.main()] %s.\n", argv[0], errmsg);
1348
Willy Tarreaudd815982007-10-16 12:25:14 +02001349 Alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
1350 protocol_unbind_all(); /* cleanup everything we can */
1351 if (nb_oldpids)
1352 tell_old_pids(SIGTTIN);
1353 exit(1);
Emeric Bruncf20bf12010-10-22 16:06:11 +02001354 } else if (err & ERR_WARN) {
1355 Alert("[%s.main()] %s.\n", argv[0], errmsg);
Willy Tarreaudd815982007-10-16 12:25:14 +02001356 }
1357
Willy Tarreaubaaee002006-06-26 02:48:02 +02001358 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02001359 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
1360 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001361
Willy Tarreaubaaee002006-06-26 02:48:02 +02001362 /* MODE_QUIET can inhibit alerts and warnings below this line */
1363
1364 global.mode &= ~MODE_STARTING;
1365 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
1366 /* detach from the tty */
1367 fclose(stdin); fclose(stdout); fclose(stderr);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001368 }
1369
1370 /* open log & pid files before the chroot */
1371 if (global.mode & MODE_DAEMON && global.pidfile != NULL) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02001372 unlink(global.pidfile);
1373 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
1374 if (pidfd < 0) {
1375 Alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
1376 if (nb_oldpids)
1377 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02001378 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001379 exit(1);
1380 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001381 }
1382
Willy Tarreaub38651a2007-03-24 17:24:39 +01001383#ifdef CONFIG_HAP_CTTPROXY
1384 if (global.last_checks & LSTCHK_CTTPROXY) {
1385 int ret;
1386
1387 ret = check_cttproxy_version();
1388 if (ret < 0) {
1389 Alert("[%s.main()] Cannot enable cttproxy.\n%s",
1390 argv[0],
1391 (ret == -1) ? " Incorrect module version.\n"
1392 : " Make sure you have enough permissions and that the module is loaded.\n");
Willy Tarreaudd815982007-10-16 12:25:14 +02001393 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01001394 exit(1);
1395 }
1396 }
1397#endif
1398
1399 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
1400 Alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
Willy Tarreau4e30ed72009-02-04 18:02:48 +01001401 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02001402 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01001403 exit(1);
1404 }
1405
Willy Tarreau4e30ed72009-02-04 18:02:48 +01001406 /* If the user is not root, we'll still let him try the configuration
1407 * but we inform him that unexpected behaviour may occur.
1408 */
1409 if ((global.last_checks & LSTCHK_NETADM) && getuid())
1410 Warning("[%s.main()] Some options which require full privileges"
1411 " might not work well.\n"
1412 "", argv[0]);
1413
Willy Tarreauf223cc02007-10-15 18:57:08 +02001414 /* chroot if needed */
1415 if (global.chroot != NULL) {
Willy Tarreau21337822012-04-29 14:11:38 +02001416 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Willy Tarreauf223cc02007-10-15 18:57:08 +02001417 Alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
1418 if (nb_oldpids)
1419 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02001420 protocol_unbind_all();
Willy Tarreauf223cc02007-10-15 18:57:08 +02001421 exit(1);
1422 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02001423 }
1424
Willy Tarreaubaaee002006-06-26 02:48:02 +02001425 if (nb_oldpids)
Willy Tarreaubb545b42010-08-25 12:58:59 +02001426 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001427
1428 /* Note that any error at this stage will be fatal because we will not
1429 * be able to restart the old pids.
1430 */
1431
1432 /* setgid / setuid */
1433 if (global.gid && setgid(global.gid) == -1) {
1434 Alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
Willy Tarreaudd815982007-10-16 12:25:14 +02001435 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001436 exit(1);
1437 }
1438
1439 if (global.uid && setuid(global.uid) == -1) {
1440 Alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
Willy Tarreaudd815982007-10-16 12:25:14 +02001441 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001442 exit(1);
1443 }
1444
1445 /* check ulimits */
1446 limit.rlim_cur = limit.rlim_max = 0;
1447 getrlimit(RLIMIT_NOFILE, &limit);
1448 if (limit.rlim_cur < global.maxsock) {
1449 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 +02001450 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock, global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001451 }
1452
1453 if (global.mode & MODE_DAEMON) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01001454 struct proxy *px;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001455 int ret = 0;
1456 int proc;
1457
1458 /* the father launches the required number of processes */
1459 for (proc = 0; proc < global.nbproc; proc++) {
1460 ret = fork();
1461 if (ret < 0) {
1462 Alert("[%s.main()] Cannot fork.\n", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02001463 protocol_unbind_all();
Willy Tarreaud6803712007-10-16 07:44:56 +02001464 exit(1); /* there has been an error */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001465 }
1466 else if (ret == 0) /* child breaks here */
1467 break;
Willy Tarreau269ab312012-09-05 08:02:48 +02001468 if (pidfd >= 0) {
1469 char pidstr[100];
1470 snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
Willy Tarreauaa52bef2012-09-07 22:18:59 +02001471 if (write(pidfd, pidstr, strlen(pidstr)) < 0) /* shut gcc warning */;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001472 }
Willy Tarreaudcd47712007-11-04 23:35:08 +01001473 relative_pid++; /* each child will get a different one */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001474 }
Willy Tarreaufc6c0322012-11-16 16:12:27 +01001475
1476#ifdef USE_CPU_AFFINITY
1477 if (proc < global.nbproc && /* child */
1478 proc < 32 && /* only the first 32 processes may be pinned */
1479 global.cpu_map[proc]) /* only do this if the process has a CPU map */
1480 sched_setaffinity(0, sizeof(unsigned long), (void *)&global.cpu_map[proc]);
1481#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02001482 /* close the pidfile both in children and father */
Willy Tarreau269ab312012-09-05 08:02:48 +02001483 if (pidfd >= 0) {
1484 //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */
1485 close(pidfd);
1486 }
Willy Tarreaud137dd32010-08-25 12:49:05 +02001487
1488 /* We won't ever use this anymore */
1489 free(oldpids); oldpids = NULL;
1490 free(global.chroot); global.chroot = NULL;
1491 free(global.pidfile); global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001492
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01001493 /* we might have to unbind some proxies from some processes */
1494 px = proxy;
1495 while (px != NULL) {
1496 if (px->bind_proc && px->state != PR_STSTOPPED) {
1497 if (!(px->bind_proc & (1 << proc)))
1498 stop_proxy(px);
1499 }
1500 px = px->next;
1501 }
1502
Willy Tarreaubaaee002006-06-26 02:48:02 +02001503 if (proc == global.nbproc)
1504 exit(0); /* parent must leave */
1505
1506 /* if we're NOT in QUIET mode, we should now close the 3 first FDs to ensure
1507 * that we can detach from the TTY. We MUST NOT do it in other cases since
1508 * it would have already be done, and 0-2 would have been affected to listening
1509 * sockets
1510 */
Willy Tarreau106cb762008-11-16 07:40:34 +01001511 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02001512 /* detach from the tty */
1513 fclose(stdin); fclose(stdout); fclose(stderr);
Willy Tarreau106cb762008-11-16 07:40:34 +01001514 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001515 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
1516 }
1517 pid = getpid(); /* update child's pid */
1518 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02001519 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001520 }
1521
Willy Tarreaudd815982007-10-16 12:25:14 +02001522 protocol_enable_all();
Willy Tarreau4f60f162007-04-08 16:39:58 +02001523 /*
1524 * That's it : the central polling loop. Run until we stop.
1525 */
1526 run_poll_loop();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001527
1528 /* Free all Hash Keys and all Hash elements */
1529 appsession_cleanup();
1530 /* Do some cleanup */
1531 deinit();
1532
1533 exit(0);
1534}
1535
1536
1537/*
1538 * Local variables:
1539 * c-indent-level: 8
1540 * c-basic-offset: 8
1541 * End:
1542 */