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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>
55#include <common/compat.h>
56#include <common/config.h>
57#include <common/defaults.h>
Willy Tarreaud740bab2007-10-28 11:14:07 +010058#include <common/errors.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020059#include <common/memory.h>
60#include <common/mini-clist.h>
61#include <common/regex.h>
62#include <common/standard.h>
63#include <common/time.h>
64#include <common/uri_auth.h>
65#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020066
67#include <types/capture.h>
68#include <types/global.h>
Simon Hormanac821422011-07-15 13:14:09 +090069#include <types/proto_tcp.h>
70#include <types/acl.h>
Willy Tarreau3c63fd82011-09-07 18:00:47 +020071#include <types/peers.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020072
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +010073#include <proto/auth.h>
Willy Tarreau0fc45a72007-06-17 00:36:03 +020074#include <proto/acl.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020075#include <proto/backend.h>
76#include <proto/buffers.h>
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +020077#include <proto/checks.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020078#include <proto/fd.h>
Willy Tarreau34eb6712011-10-24 18:15:04 +020079#include <proto/hdr_idx.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020080#include <proto/log.h>
Willy Tarreaudd815982007-10-16 12:25:14 +020081#include <proto/protocols.h>
Willy Tarreau80587432006-12-24 17:47:20 +010082#include <proto/proto_http.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020083#include <proto/proxy.h>
84#include <proto/queue.h>
85#include <proto/server.h>
Willy Tarreauc6ca1a02007-05-13 19:43:47 +020086#include <proto/session.h>
Willy Tarreau29857942009-05-10 09:01:21 +020087#include <proto/signal.h>
Willy Tarreauc63190d2012-05-11 14:23:52 +020088#include <proto/sock_raw.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020089#include <proto/task.h>
90
Willy Tarreaub38651a2007-03-24 17:24:39 +010091#ifdef CONFIG_HAP_CTTPROXY
92#include <proto/cttproxy.h>
93#endif
94
Willy Tarreaubaaee002006-06-26 02:48:02 +020095/*********************************************************************/
96
97/*********************************************************************/
98
Willy Tarreau477ecd82010-01-03 21:12:30 +010099/* list of config files */
100static struct list cfg_cfgfiles = LIST_HEAD_INIT(cfg_cfgfiles);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200101int pid; /* current process id */
Willy Tarreau28156642007-11-26 16:13:36 +0100102int relative_pid = 1; /* process id starting at 1 */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200103
104/* global options */
105struct global global = {
William Lallemand5f232402012-04-05 18:02:55 +0200106 .req_count = 0,
William Lallemand0f99e342011-10-12 17:50:54 +0200107 .logsrvs = LIST_HEAD_INIT(global.logsrvs),
Willy Tarreau03f6d672007-10-18 15:15:57 +0200108 .stats_sock = {
Willy Tarreau03f6d672007-10-18 15:15:57 +0200109 .perm = {
110 .ux = {
111 .uid = -1,
112 .gid = -1,
113 .mode = 0,
114 }
115 }
Willy Tarreau27a674e2009-08-17 07:23:33 +0200116 },
Emeric Bruned760922010-10-22 17:59:25 +0200117 .unix_bind = {
118 .ux = {
119 .uid = -1,
120 .gid = -1,
121 .mode = 0,
122 }
123 },
Willy Tarreau27a674e2009-08-17 07:23:33 +0200124 .tune = {
125 .bufsize = BUFSIZE,
126 .maxrewrite = MAXREWRITE,
Willy Tarreau43961d52010-10-04 20:39:20 +0200127 .chksize = BUFSIZE,
Willy Tarreau27a674e2009-08-17 07:23:33 +0200128 },
Willy Tarreaubaaee002006-06-26 02:48:02 +0200129 /* others NULL OK */
130};
131
132/*********************************************************************/
133
134int stopping; /* non zero means stopping in progress */
Willy Tarreauaf7ad002010-08-31 15:39:26 +0200135int jobs = 0; /* number of active jobs (conns, listeners, active tasks, ...) */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200136
137/* Here we store informations about the pids of the processes we may pause
138 * or kill. We will send them a signal every 10 ms until we can bind to all
139 * our ports. With 200 retries, that's about 2 seconds.
140 */
141#define MAX_START_RETRIES 200
Willy Tarreaubaaee002006-06-26 02:48:02 +0200142static int *oldpids = NULL;
143static int oldpids_sig; /* use USR1 or TERM */
144
145/* this is used to drain data, and as a temporary buffer for sprintf()... */
David du Colombier7af46052012-05-16 14:16:48 +0200146char *trash = NULL;
147int trashlen = BUFSIZE;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200148
Willy Tarreau8096de92010-02-26 11:12:27 +0100149/* this buffer is always the same size as standard buffers and is used for
150 * swapping data inside a buffer.
151 */
152char *swap_buffer = NULL;
153
Willy Tarreaubb545b42010-08-25 12:58:59 +0200154int nb_oldpids = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200155const int zero = 0;
156const int one = 1;
Alexandre Cassen87ea5482007-10-11 20:48:58 +0200157const struct linger nolinger = { .l_onoff = 1, .l_linger = 0 };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200158
Willy Tarreau1d21e0a2010-03-12 21:58:54 +0100159char hostname[MAX_HOSTNAME_LEN];
Emeric Brun2b920a12010-09-23 18:30:22 +0200160char localpeer[MAX_HOSTNAME_LEN];
Willy Tarreaubaaee002006-06-26 02:48:02 +0200161
Willy Tarreau08ceb102011-07-24 22:58:00 +0200162/* list of the temporarily limited listeners because of lack of resource */
163struct list global_listener_queue = LIST_HEAD_INIT(global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +0200164struct task *global_listener_queue_task;
165static struct task *manage_global_listener_queue(struct task *t);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200166
167/*********************************************************************/
168/* general purpose functions ***************************************/
169/*********************************************************************/
170
171void display_version()
172{
173 printf("HA-Proxy version " HAPROXY_VERSION " " HAPROXY_DATE"\n");
Willy Tarreau9eeb57b2012-03-26 06:15:29 +0200174 printf("Copyright 2000-2012 Willy Tarreau <w@1wt.eu>\n\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200175}
176
Willy Tarreau7b066db2007-12-02 11:28:59 +0100177void display_build_opts()
178{
179 printf("Build options :"
180#ifdef BUILD_TARGET
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100181 "\n TARGET = " BUILD_TARGET
Willy Tarreau7b066db2007-12-02 11:28:59 +0100182#endif
183#ifdef BUILD_CPU
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100184 "\n CPU = " BUILD_CPU
Willy Tarreau7b066db2007-12-02 11:28:59 +0100185#endif
186#ifdef BUILD_CC
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100187 "\n CC = " BUILD_CC
188#endif
189#ifdef BUILD_CFLAGS
190 "\n CFLAGS = " BUILD_CFLAGS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100191#endif
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100192#ifdef BUILD_OPTIONS
193 "\n OPTIONS = " BUILD_OPTIONS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100194#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200195 "\n\nDefault settings :"
196 "\n maxconn = %d, bufsize = %d, maxrewrite = %d, maxpollevents = %d"
197 "\n\n",
198 DEFAULT_MAXCONN, BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
Willy Tarreaube5b6852009-10-03 18:57:08 +0200199
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100200 printf("Encrypted password support via crypt(3): "
201#ifdef CONFIG_HAP_CRYPT
202 "yes"
203#else
204 "no"
205#endif
206 "\n");
207
208 putchar('\n');
209
Willy Tarreaube5b6852009-10-03 18:57:08 +0200210 list_pollers(stdout);
211 putchar('\n');
Willy Tarreau7b066db2007-12-02 11:28:59 +0100212}
213
Willy Tarreaubaaee002006-06-26 02:48:02 +0200214/*
215 * This function prints the command line usage and exits
216 */
217void usage(char *name)
218{
219 display_version();
220 fprintf(stderr,
Willy Tarreau5d01a632009-06-22 16:02:30 +0200221 "Usage : %s [-f <cfgfile>]* [ -vdV"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200222 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200223 " [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100224 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200225 " -d enters debug mode ; -db only disables background mode.\n"
Willy Tarreau6e064432012-05-08 15:40:42 +0200226 " -dM[<byte>] poisons memory with <byte> (defaults to 0x50)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200227 " -V enters verbose mode (disables quiet mode)\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200228 " -D goes daemon ; -C changes to <dir> before loading files.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200229 " -q quiet mode : don't display messages\n"
Willy Tarreau5d01a632009-06-22 16:02:30 +0200230 " -c check mode : only check config files and exit\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200231 " -n sets the maximum total # of connections (%d)\n"
232 " -m limits the usable amount of memory (in MB)\n"
233 " -N sets the default, per-proxy maximum # of connections (%d)\n"
Emeric Brun2b920a12010-09-23 18:30:22 +0200234 " -L set local peer name (default to hostname)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200235 " -p writes pids of all children to this file\n"
236#if defined(ENABLE_EPOLL)
237 " -de disables epoll() usage even when available\n"
238#endif
Willy Tarreaude99e992007-04-16 00:53:59 +0200239#if defined(ENABLE_SEPOLL)
240 " -ds disables speculative epoll() usage even when available\n"
241#endif
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200242#if defined(ENABLE_KQUEUE)
243 " -dk disables kqueue() usage even when available\n"
244#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200245#if defined(ENABLE_POLL)
246 " -dp disables poll() usage even when available\n"
247#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +0200248#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100249 " -dS disables splice usage (broken on old kernels)\n"
250#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200251 " -sf/-st [pid ]* finishes/terminates old pids. Must be last arguments.\n"
252 "\n",
253 name, DEFAULT_MAXCONN, cfg_maxpconn);
254 exit(1);
255}
256
257
258
259/*********************************************************************/
260/* more specific functions ***************************************/
261/*********************************************************************/
262
263/*
Willy Tarreaud0807c32010-08-27 18:26:11 +0200264 * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
265 * a signal zero to all subscribers. This means that it's as easy as
266 * subscribing to signal 0 to get informed about an imminent shutdown.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200267 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200268void sig_soft_stop(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200269{
270 soft_stop();
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200271 signal_unregister_handler(sh);
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200272 pool_gc2();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200273}
274
275/*
276 * upon SIGTTOU, we pause everything
277 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200278void sig_pause(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200279{
280 pause_proxies();
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200281 pool_gc2();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200282}
283
284/*
285 * upon SIGTTIN, let's have a soft stop.
286 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200287void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200288{
Willy Tarreaube58c382011-07-24 18:28:10 +0200289 resume_proxies();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200290}
291
292/*
293 * this function dumps every server's state when the process receives SIGHUP.
294 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200295void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200296{
297 struct proxy *p = proxy;
298
299 Warning("SIGHUP received, dumping servers states.\n");
300 while (p) {
301 struct server *s = p->srv;
302
303 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
304 while (s) {
David du Colombier7af46052012-05-16 14:16:48 +0200305 snprintf(trash, trashlen,
Willy Tarreau3b88d442009-04-11 20:44:08 +0200306 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
Willy Tarreaubaaee002006-06-26 02:48:02 +0200307 p->id, s->id,
308 (s->state & SRV_RUNNING) ? "UP" : "DOWN",
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +0200309 s->cur_sess, s->nbpend, s->counters.cum_sess);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200310 Warning("%s\n", trash);
311 send_log(p, LOG_NOTICE, "%s\n", trash);
312 s = s->next;
313 }
314
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200315 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
316 if (!p->srv) {
David du Colombier7af46052012-05-16 14:16:48 +0200317 snprintf(trash, trashlen,
Willy Tarreau3b88d442009-04-11 20:44:08 +0200318 "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 +0200319 p->id,
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100320 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 +0200321 } else if (p->srv_act == 0) {
David du Colombier7af46052012-05-16 14:16:48 +0200322 snprintf(trash, trashlen,
Willy Tarreau3b88d442009-04-11 20:44:08 +0200323 "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 +0200324 p->id,
325 (p->srv_bck) ? "is running on backup servers" : "has no server available",
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100326 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 +0200327 } else {
David du Colombier7af46052012-05-16 14:16:48 +0200328 snprintf(trash, trashlen,
Willy Tarreaubaaee002006-06-26 02:48:02 +0200329 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
Willy Tarreau3b88d442009-04-11 20:44:08 +0200330 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
Willy Tarreaubaaee002006-06-26 02:48:02 +0200331 p->id, p->srv_act, p->srv_bck,
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100332 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 +0200333 }
334 Warning("%s\n", trash);
335 send_log(p, LOG_NOTICE, "%s\n", trash);
336
337 p = p->next;
338 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200339}
340
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200341void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200342{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200343 /* dump memory usage then free everything possible */
344 dump_pools();
345 pool_gc2();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200346}
347
Willy Tarreaubaaee002006-06-26 02:48:02 +0200348/*
349 * This function initializes all the necessary variables. It only returns
350 * if everything is OK. If something fails, it exits.
351 */
352void init(int argc, char **argv)
353{
Willy Tarreaubaaee002006-06-26 02:48:02 +0200354 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200355 char *tmp;
356 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +0200357 int err_code = 0;
Willy Tarreau477ecd82010-01-03 21:12:30 +0100358 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +0000359 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +0200360 char *change_dir = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200361
David du Colombier7af46052012-05-16 14:16:48 +0200362 trash = malloc(trashlen);
363
Emeric Brun2b920a12010-09-23 18:30:22 +0200364 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
365 * the string in case of truncation, and at least FreeBSD appears not to do
366 * it.
367 */
368 memset(hostname, 0, sizeof(hostname));
369 gethostname(hostname, sizeof(hostname) - 1);
370 memset(localpeer, 0, sizeof(localpeer));
371 memcpy(localpeer, hostname, (sizeof(hostname) > sizeof(localpeer) ? sizeof(localpeer) : sizeof(hostname)) - 1);
372
Willy Tarreaubaaee002006-06-26 02:48:02 +0200373 /*
374 * Initialize the previously static variables.
375 */
376
Willy Tarreau3eba98a2009-01-25 13:56:13 +0100377 totalconn = actconn = maxfd = listeners = stopping = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200378
379
380#ifdef HAPROXY_MEMMAX
381 global.rlimit_memmax = HAPROXY_MEMMAX;
382#endif
383
Willy Tarreaub0b37bc2008-06-23 14:00:57 +0200384 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200385 start_date = now;
386
Willy Tarreau29857942009-05-10 09:01:21 +0200387 signal_init();
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200388 init_task();
389 init_session();
Willy Tarreau8280d642009-09-23 23:37:52 +0200390 /* warning, we init buffers later */
Willy Tarreaue4d7e552007-05-13 20:19:55 +0200391 init_pendconn();
Willy Tarreau80587432006-12-24 17:47:20 +0100392 init_proto_http();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200393
Willy Tarreau43b78992009-01-25 15:42:27 +0100394 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200395#if defined(ENABLE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +0100396 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200397#endif
398#if defined(ENABLE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +0100399 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200400#endif
Willy Tarreaude99e992007-04-16 00:53:59 +0200401#if defined(ENABLE_SEPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +0100402 global.tune.options |= GTUNE_USE_SEPOLL;
Willy Tarreaude99e992007-04-16 00:53:59 +0200403#endif
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200404#if defined(ENABLE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +0100405 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200406#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +0200407#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100408 global.tune.options |= GTUNE_USE_SPLICE;
409#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200410
411 pid = getpid();
412 progname = *argv;
413 while ((tmp = strchr(progname, '/')) != NULL)
414 progname = tmp + 1;
415
Kevinm48936af2010-12-22 16:08:21 +0000416 /* the process name is used for the logs only */
417 global.log_tag = strdup(progname);
418
Willy Tarreaubaaee002006-06-26 02:48:02 +0200419 argc--; argv++;
420 while (argc > 0) {
421 char *flag;
422
423 if (**argv == '-') {
424 flag = *argv+1;
425
426 /* 1 arg */
427 if (*flag == 'v') {
428 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +0100429 if (flag[1] == 'v') /* -vv */
430 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200431 exit(0);
432 }
433#if defined(ENABLE_EPOLL)
434 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +0100435 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200436#endif
Willy Tarreaude99e992007-04-16 00:53:59 +0200437#if defined(ENABLE_SEPOLL)
438 else if (*flag == 'd' && flag[1] == 's')
Willy Tarreau43b78992009-01-25 15:42:27 +0100439 global.tune.options &= ~GTUNE_USE_SEPOLL;
Willy Tarreaude99e992007-04-16 00:53:59 +0200440#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200441#if defined(ENABLE_POLL)
442 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +0100443 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200444#endif
Willy Tarreau69cad1a2007-04-10 22:45:11 +0200445#if defined(ENABLE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200446 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +0100447 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200448#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +0200449#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100450 else if (*flag == 'd' && flag[1] == 'S')
451 global.tune.options &= ~GTUNE_USE_SPLICE;
452#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200453 else if (*flag == 'V')
454 arg_mode |= MODE_VERBOSE;
455 else if (*flag == 'd' && flag[1] == 'b')
456 arg_mode |= MODE_FOREGROUND;
Willy Tarreau6e064432012-05-08 15:40:42 +0200457 else if (*flag == 'd' && flag[1] == 'M')
458 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreaubaaee002006-06-26 02:48:02 +0200459 else if (*flag == 'd')
460 arg_mode |= MODE_DEBUG;
461 else if (*flag == 'c')
462 arg_mode |= MODE_CHECK;
463 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +0200464 arg_mode |= MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200465 else if (*flag == 'q')
466 arg_mode |= MODE_QUIET;
467 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
468 /* list of pids to finish ('f') or terminate ('t') */
469
470 if (flag[1] == 'f')
471 oldpids_sig = SIGUSR1; /* finish then exit */
472 else
473 oldpids_sig = SIGTERM; /* terminate immediately */
474 argv++; argc--;
475
476 if (argc > 0) {
477 oldpids = calloc(argc, sizeof(int));
478 while (argc > 0) {
479 oldpids[nb_oldpids] = atol(*argv);
480 if (oldpids[nb_oldpids] <= 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +0200481 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200482 argc--; argv++;
483 nb_oldpids++;
484 }
485 }
486 }
487 else { /* >=2 args */
488 argv++; argc--;
489 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +0200490 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200491
492 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +0200493 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200494 case 'n' : cfg_maxconn = atol(*argv); break;
495 case 'm' : global.rlimit_memmax = atol(*argv); break;
496 case 'N' : cfg_maxpconn = atol(*argv); break;
Emeric Brun2b920a12010-09-23 18:30:22 +0200497 case 'L' : strncpy(localpeer, *argv, sizeof(localpeer) - 1); break;
Willy Tarreau5d01a632009-06-22 16:02:30 +0200498 case 'f' :
Willy Tarreau477ecd82010-01-03 21:12:30 +0100499 wl = (struct wordlist *)calloc(1, sizeof(*wl));
500 if (!wl) {
501 Alert("Cannot load configuration file %s : out of memory.\n", *argv);
Willy Tarreau5d01a632009-06-22 16:02:30 +0200502 exit(1);
503 }
Willy Tarreau477ecd82010-01-03 21:12:30 +0100504 wl->s = *argv;
505 LIST_ADDQ(&cfg_cfgfiles, &wl->list);
Willy Tarreau5d01a632009-06-22 16:02:30 +0200506 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200507 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +0200508 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200509 }
510 }
511 }
512 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +0200513 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200514 argv++; argc--;
515 }
516
517 global.mode = MODE_STARTING | /* during startup, we want most of the alerts */
518 (arg_mode & (MODE_DAEMON | MODE_FOREGROUND | MODE_VERBOSE
519 | MODE_QUIET | MODE_CHECK | MODE_DEBUG));
520
Willy Tarreau477ecd82010-01-03 21:12:30 +0100521 if (LIST_ISEMPTY(&cfg_cfgfiles))
Willy Tarreau3bafcdc2011-09-10 19:20:23 +0200522 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200523
Willy Tarreau576132e2011-09-10 19:26:56 +0200524 if (change_dir && chdir(change_dir) < 0) {
525 Alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
526 exit(1);
527 }
528
Willy Tarreaubaaee002006-06-26 02:48:02 +0200529 have_appsession = 0;
530 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200531
532 init_default_instance();
533
Willy Tarreau477ecd82010-01-03 21:12:30 +0100534 list_for_each_entry(wl, &cfg_cfgfiles, list) {
Willy Tarreauc4382422009-12-06 13:10:44 +0100535 int ret;
536
Willy Tarreau477ecd82010-01-03 21:12:30 +0100537 ret = readcfgfile(wl->s);
Willy Tarreauc4382422009-12-06 13:10:44 +0100538 if (ret == -1) {
539 Alert("Could not open configuration file %s : %s\n",
Willy Tarreau477ecd82010-01-03 21:12:30 +0100540 wl->s, strerror(errno));
Willy Tarreauc4382422009-12-06 13:10:44 +0100541 exit(1);
542 }
Willy Tarreau25a67fa2009-12-15 21:46:25 +0100543 if (ret & (ERR_ABORT|ERR_FATAL))
Willy Tarreau477ecd82010-01-03 21:12:30 +0100544 Alert("Error(s) found in configuration file : %s\n", wl->s);
Willy Tarreau25a67fa2009-12-15 21:46:25 +0100545 err_code |= ret;
Willy Tarreau058e9072009-07-20 09:30:05 +0200546 if (err_code & ERR_ABORT)
Willy Tarreau5d01a632009-06-22 16:02:30 +0200547 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200548 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +0200549
Willy Tarreaubb925012009-07-23 13:36:36 +0200550 err_code |= check_config_validity();
551 if (err_code & (ERR_ABORT|ERR_FATAL)) {
552 Alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200553 exit(1);
554 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200555
556 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +0100557 struct peers *pr;
558 struct proxy *px;
559
560 for (pr = peers; pr; pr = pr->next)
561 if (pr->peers_fe)
562 break;
563
564 for (px = proxy; px; px = px->next)
565 if (px->state == PR_STNEW && px->listen)
566 break;
567
568 if (pr || px) {
569 /* At least one peer or one listener has been found */
570 qfprintf(stdout, "Configuration file is valid\n");
571 exit(0);
572 }
573 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
574 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200575 }
576
Willy Tarreaue9b26022011-08-01 20:57:55 +0200577 global_listener_queue_task = task_new();
578 if (!global_listener_queue_task) {
579 Alert("Out of memory when initializing global task\n");
580 exit(1);
581 }
582 /* very simple initialization, users will queue the task if needed */
583 global_listener_queue_task->context = NULL; /* not even a context! */
584 global_listener_queue_task->process = manage_global_listener_queue;
585 global_listener_queue_task->expire = TICK_ETERNITY;
586
Willy Tarreau8280d642009-09-23 23:37:52 +0200587 /* now we know the buffer size, we can initialize the buffers */
588 init_buffer();
589
Willy Tarreau915e1eb2009-06-22 15:48:36 +0200590 if (have_appsession)
591 appsession_init();
592
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +0200593 if (start_checks() < 0)
594 exit(1);
595
Willy Tarreaubaaee002006-06-26 02:48:02 +0200596 if (cfg_maxconn > 0)
597 global.maxconn = cfg_maxconn;
598
599 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +0200600 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200601 global.pidfile = strdup(cfg_pidfile);
602 }
603
604 if (global.maxconn == 0)
605 global.maxconn = DEFAULT_MAXCONN;
606
Willy Tarreau66aa61f2009-01-18 21:44:07 +0100607 if (!global.maxpipes) {
608 /* maxpipes not specified. Count how many frontends and backends
609 * may be using splicing, and bound that to maxconn.
610 */
611 struct proxy *cur;
612 int nbfe = 0, nbbe = 0;
613
614 for (cur = proxy; cur; cur = cur->next) {
615 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
616 if (cur->cap & PR_CAP_FE)
617 nbfe += cur->maxconn;
618 if (cur->cap & PR_CAP_BE)
Willy Tarreauafb48762009-01-25 10:42:05 +0100619 nbbe += cur->fullconn ? cur->fullconn : global.maxconn;
Willy Tarreau66aa61f2009-01-18 21:44:07 +0100620 }
621 }
622 global.maxpipes = MAX(nbfe, nbbe);
623 if (global.maxpipes > global.maxconn)
624 global.maxpipes = global.maxconn;
Willy Tarreau686ac822009-01-25 14:06:58 +0100625 global.maxpipes /= 4;
Willy Tarreau66aa61f2009-01-18 21:44:07 +0100626 }
627
628
Willy Tarreauabacc2c2011-09-07 14:26:33 +0200629 global.hardmaxconn = global.maxconn; /* keep this max value */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200630 global.maxsock += global.maxconn * 2; /* each connection needs two sockets */
Willy Tarreau3ec79b92009-01-18 20:39:42 +0100631 global.maxsock += global.maxpipes * 2; /* each pipe needs two FDs */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200632
Willy Tarreau3c63fd82011-09-07 18:00:47 +0200633 if (global.stats_fe)
634 global.maxsock += global.stats_fe->maxconn;
635
636 if (peers) {
637 /* peers also need to bypass global maxconn */
638 struct peers *p = peers;
639
640 for (p = peers; p; p = p->next)
641 if (p->peers_fe)
642 global.maxsock += p->peers_fe->maxconn;
643 }
644
Willy Tarreau1db37712007-06-03 17:16:49 +0200645 if (global.tune.maxpollevents <= 0)
646 global.tune.maxpollevents = MAX_POLL_EVENTS;
647
Willy Tarreauf49d1df2009-03-01 08:35:41 +0100648 if (global.tune.maxaccept == 0) {
Willy Tarreau4827fd22011-07-22 21:59:59 +0200649 /* Note: we should not try to accept too many connections at once,
650 * because past one point we're significantly reducing the cache
651 * efficiency and the highest session rate significantly drops.
652 * Values between 15 and 35 seem fine on a Core i5 with 4M L3 cache.
653 */
Willy Tarreaua0250ba2008-01-06 11:22:57 +0100654 if (global.nbproc > 1)
655 global.tune.maxaccept = 8; /* leave some conns to other processes */
656 else
Willy Tarreau4827fd22011-07-22 21:59:59 +0200657 global.tune.maxaccept = 32; /* accept more incoming conns at once */
Willy Tarreaua0250ba2008-01-06 11:22:57 +0100658 }
659
Willy Tarreau6f4a82c2009-03-21 20:43:57 +0100660 if (global.tune.recv_enough == 0)
661 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
662
Willy Tarreau27a674e2009-08-17 07:23:33 +0200663 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
664 global.tune.maxrewrite = global.tune.bufsize / 2;
665
Willy Tarreaubaaee002006-06-26 02:48:02 +0200666 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
667 /* command line debug mode inhibits configuration mode */
668 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
669 }
670 global.mode |= (arg_mode & (MODE_DAEMON | MODE_FOREGROUND | MODE_QUIET |
Willy Tarreaufbee7132007-10-18 13:53:22 +0200671 MODE_VERBOSE | MODE_DEBUG ));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200672
673 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
674 Warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
675 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
676 }
677
678 if ((global.nbproc > 1) && !(global.mode & MODE_DAEMON)) {
679 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
680 Warning("<nbproc> is only meaningful in daemon mode. Setting limit to 1 process.\n");
681 global.nbproc = 1;
682 }
683
684 if (global.nbproc < 1)
685 global.nbproc = 1;
686
Willy Tarreau8096de92010-02-26 11:12:27 +0100687 swap_buffer = (char *)calloc(1, global.tune.bufsize);
688
Willy Tarreau8d5d77e2009-10-18 07:25:52 +0200689 fdinfo = (struct fdinfo *)calloc(1,
690 sizeof(struct fdinfo) * (global.maxsock));
Willy Tarreaubaaee002006-06-26 02:48:02 +0200691 fdtab = (struct fdtab *)calloc(1,
692 sizeof(struct fdtab) * (global.maxsock));
Willy Tarreauef1d1f82007-04-16 00:25:25 +0200693 /*
694 * Note: we could register external pollers here.
695 * Built-in pollers have been registered before main().
696 */
Willy Tarreau4f60f162007-04-08 16:39:58 +0200697
Willy Tarreau43b78992009-01-25 15:42:27 +0100698 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200699 disable_poller("kqueue");
700
Willy Tarreau43b78992009-01-25 15:42:27 +0100701 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +0200702 disable_poller("epoll");
703
Willy Tarreau43b78992009-01-25 15:42:27 +0100704 if (!(global.tune.options & GTUNE_USE_SEPOLL))
Willy Tarreaude99e992007-04-16 00:53:59 +0200705 disable_poller("sepoll");
706
Willy Tarreau43b78992009-01-25 15:42:27 +0100707 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +0200708 disable_poller("poll");
709
Willy Tarreau43b78992009-01-25 15:42:27 +0100710 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +0200711 disable_poller("select");
712
713 /* Note: we could disable any poller by name here */
714
Willy Tarreau2ff76222007-04-09 19:29:56 +0200715 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
716 list_pollers(stderr);
717
Willy Tarreau4f60f162007-04-08 16:39:58 +0200718 if (!init_pollers()) {
Willy Tarreau2ff76222007-04-09 19:29:56 +0200719 Alert("No polling mechanism available.\n");
Willy Tarreau4f60f162007-04-08 16:39:58 +0200720 exit(1);
721 }
Willy Tarreau2ff76222007-04-09 19:29:56 +0200722 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
723 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +0200724 }
725
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +0200726 if (!global.node)
727 global.node = strdup(hostname);
728
Willy Tarreaubaaee002006-06-26 02:48:02 +0200729}
730
Simon Horman6fb82592011-07-15 13:14:11 +0900731static void deinit_acl_cond(struct acl_cond *cond)
Simon Hormanac821422011-07-15 13:14:09 +0900732{
Simon Hormanac821422011-07-15 13:14:09 +0900733 struct acl_term_suite *suite, *suiteb;
734 struct acl_term *term, *termb;
735
Simon Horman6fb82592011-07-15 13:14:11 +0900736 if (!cond)
737 return;
738
739 list_for_each_entry_safe(suite, suiteb, &cond->suites, list) {
740 list_for_each_entry_safe(term, termb, &suite->terms, list) {
741 LIST_DEL(&term->list);
742 free(term);
Simon Hormanac821422011-07-15 13:14:09 +0900743 }
Simon Horman6fb82592011-07-15 13:14:11 +0900744 LIST_DEL(&suite->list);
745 free(suite);
746 }
747
748 free(cond);
749}
750
751static void deinit_tcp_rules(struct list *rules)
752{
753 struct tcp_rule *trule, *truleb;
754
755 list_for_each_entry_safe(trule, truleb, rules, list) {
Simon Hormanac821422011-07-15 13:14:09 +0900756 LIST_DEL(&trule->list);
Simon Horman6fb82592011-07-15 13:14:11 +0900757 deinit_acl_cond(trule->cond);
Simon Hormanac821422011-07-15 13:14:09 +0900758 free(trule);
759 }
760}
761
Willy Tarreau12785782012-04-27 21:37:17 +0200762static void deinit_sample_arg(struct arg *p)
Simon Horman6fb82592011-07-15 13:14:11 +0900763{
Willy Tarreauf9954102012-04-20 14:03:29 +0200764 struct arg *p_back = p;
765
Simon Horman6fb82592011-07-15 13:14:11 +0900766 if (!p)
767 return;
768
Willy Tarreauf9954102012-04-20 14:03:29 +0200769 while (p->type != ARGT_STOP) {
Willy Tarreau496aa012012-06-01 10:38:29 +0200770 if (p->type == ARGT_STR || p->unresolved) {
Willy Tarreauf9954102012-04-20 14:03:29 +0200771 free(p->data.str.str);
772 p->data.str.str = NULL;
Willy Tarreau496aa012012-06-01 10:38:29 +0200773 p->unresolved = 0;
Willy Tarreauecfb8e82012-04-20 12:29:52 +0200774 }
Willy Tarreauf9954102012-04-20 14:03:29 +0200775 p++;
Willy Tarreauecfb8e82012-04-20 12:29:52 +0200776 }
Simon Horman6fb82592011-07-15 13:14:11 +0900777
Willy Tarreauf9954102012-04-20 14:03:29 +0200778 free(p_back);
Simon Horman6fb82592011-07-15 13:14:11 +0900779}
780
781static void deinit_stick_rules(struct list *rules)
782{
783 struct sticking_rule *rule, *ruleb;
784
785 list_for_each_entry_safe(rule, ruleb, rules, list) {
786 LIST_DEL(&rule->list);
787 deinit_acl_cond(rule->cond);
788 if (rule->expr) {
Willy Tarreau12785782012-04-27 21:37:17 +0200789 struct sample_conv_expr *conv_expr, *conv_exprb;
Simon Horman6fb82592011-07-15 13:14:11 +0900790 list_for_each_entry_safe(conv_expr, conv_exprb, &rule->expr->conv_exprs, list)
Willy Tarreau12785782012-04-27 21:37:17 +0200791 deinit_sample_arg(conv_expr->arg_p);
792 deinit_sample_arg(rule->expr->arg_p);
Simon Horman6fb82592011-07-15 13:14:11 +0900793 free(rule->expr);
794 }
795 free(rule);
796 }
797}
798
Willy Tarreaubaaee002006-06-26 02:48:02 +0200799void deinit(void)
800{
Willy Tarreau4d2d0982007-05-14 00:39:29 +0200801 struct proxy *p = proxy, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200802 struct cap_hdr *h,*h_next;
803 struct server *s,*s_next;
804 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200805 struct acl_cond *cond, *condb;
806 struct hdr_exp *exp, *expb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200807 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200808 struct switching_rule *rule, *ruleb;
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200809 struct server_rule *srule, *sruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200810 struct redirect_rule *rdr, *rdrb;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100811 struct wordlist *wl, *wlb;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100812 struct cond_wordlist *cwl, *cwlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200813 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +0200814 struct logsrv *log, *logb;
William Lallemand723b73a2012-02-08 16:37:49 +0100815 struct logformat_node *lf, *lfb;
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200816 int i;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200817
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200818 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200819 while (p) {
Willy Tarreaua534fea2008-08-03 12:19:50 +0200820 free(p->id);
821 free(p->check_req);
822 free(p->cookie_name);
823 free(p->cookie_domain);
824 free(p->url_param_name);
825 free(p->capture_name);
826 free(p->monitor_uri);
Simon Hormana31c7f72011-07-15 13:14:08 +0900827 free(p->rdp_cookie_name);
Willy Tarreau39b06652012-06-01 10:58:06 +0200828 if (p->logformat_string != default_http_log_format &&
829 p->logformat_string != default_tcp_log_format &&
830 p->logformat_string != clf_http_log_format)
Willy Tarreau196729e2012-05-31 19:30:26 +0200831 free(p->logformat_string);
832
833 free(p->uniqueid_format_string);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200834
Willy Tarreaua534fea2008-08-03 12:19:50 +0200835 for (i = 0; i < HTTP_ERR_SIZE; i++)
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +0200836 chunk_destroy(&p->errmsg[i]);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200837
Willy Tarreauf4f04122010-01-28 18:10:50 +0100838 list_for_each_entry_safe(cwl, cwlb, &p->req_add, list) {
839 LIST_DEL(&cwl->list);
840 free(cwl->s);
841 free(cwl);
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100842 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200843
Willy Tarreauf4f04122010-01-28 18:10:50 +0100844 list_for_each_entry_safe(cwl, cwlb, &p->rsp_add, list) {
845 LIST_DEL(&cwl->list);
846 free(cwl->s);
847 free(cwl);
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100848 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200849
850 list_for_each_entry_safe(cond, condb, &p->block_cond, list) {
851 LIST_DEL(&cond->list);
852 prune_acl_cond(cond);
853 free(cond);
854 }
855
Willy Tarreaub80c2302007-11-30 20:51:32 +0100856 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
857 LIST_DEL(&cond->list);
858 prune_acl_cond(cond);
859 free(cond);
860 }
861
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200862 for (exp = p->req_exp; exp != NULL; ) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200863 if (exp->preg) {
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200864 regfree((regex_t *)exp->preg);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200865 free((regex_t *)exp->preg);
866 }
867
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200868 if (exp->replace && exp->action != ACT_SETBE)
869 free((char *)exp->replace);
870 expb = exp;
871 exp = exp->next;
872 free(expb);
873 }
874
875 for (exp = p->rsp_exp; exp != NULL; ) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200876 if (exp->preg) {
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200877 regfree((regex_t *)exp->preg);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200878 free((regex_t *)exp->preg);
879 }
880
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200881 if (exp->replace && exp->action != ACT_SETBE)
882 free((char *)exp->replace);
883 expb = exp;
884 exp = exp->next;
885 free(expb);
886 }
887
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200888 /* build a list of unique uri_auths */
889 if (!ua)
890 ua = p->uri_auth;
891 else {
892 /* check if p->uri_auth is unique */
893 for (uap = ua; uap; uap=uap->next)
894 if (uap == p->uri_auth)
895 break;
896
Willy Tarreauaccc4e12008-06-24 11:14:45 +0200897 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200898 /* add it, if it is */
899 p->uri_auth->next = ua;
900 ua = p->uri_auth;
901 }
902 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200903
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200904 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
905 LIST_DEL(&acl->list);
906 prune_acl(acl);
907 free(acl);
908 }
909
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200910 list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) {
911 LIST_DEL(&srule->list);
912 prune_acl_cond(srule->cond);
913 free(srule->cond);
914 free(srule);
915 }
916
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200917 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
918 LIST_DEL(&rule->list);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200919 prune_acl_cond(rule->cond);
920 free(rule->cond);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +0200921 free(rule);
922 }
923
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200924 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
925 LIST_DEL(&rdr->list);
Willy Tarreauf285f542010-01-03 20:03:03 +0100926 if (rdr->cond) {
927 prune_acl_cond(rdr->cond);
928 free(rdr->cond);
929 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200930 free(rdr->rdr_str);
931 free(rdr);
932 }
933
William Lallemand0f99e342011-10-12 17:50:54 +0200934 list_for_each_entry_safe(log, logb, &p->logsrvs, list) {
935 LIST_DEL(&log->list);
936 free(log);
937 }
938
William Lallemand723b73a2012-02-08 16:37:49 +0100939 list_for_each_entry_safe(lf, lfb, &p->logformat, list) {
940 LIST_DEL(&lf->list);
941 free(lf);
942 }
943
Simon Hormanac821422011-07-15 13:14:09 +0900944 deinit_tcp_rules(&p->tcp_req.inspect_rules);
945 deinit_tcp_rules(&p->tcp_req.l4_rules);
946
Simon Horman6fb82592011-07-15 13:14:11 +0900947 deinit_stick_rules(&p->storersp_rules);
948 deinit_stick_rules(&p->sticking_rules);
949
Willy Tarreaua534fea2008-08-03 12:19:50 +0200950 free(p->appsession_name);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200951
952 h = p->req_cap;
953 while (h) {
954 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +0200955 free(h->name);
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200956 pool_destroy2(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200957 free(h);
958 h = h_next;
959 }/* end while(h) */
960
961 h = p->rsp_cap;
962 while (h) {
963 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +0200964 free(h->name);
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200965 pool_destroy2(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200966 free(h);
967 h = h_next;
968 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200969
Willy Tarreaubaaee002006-06-26 02:48:02 +0200970 s = p->srv;
971 while (s) {
972 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200973
974 if (s->check) {
975 task_delete(s->check);
976 task_free(s->check);
977 }
978
Willy Tarreau2e993902011-10-31 11:53:20 +0100979 if (s->warmup) {
980 task_delete(s->warmup);
981 task_free(s->warmup);
982 }
983
Willy Tarreaua534fea2008-08-03 12:19:50 +0200984 free(s->id);
985 free(s->cookie);
Nick Chalk57b1bf72010-03-16 15:50:46 +0000986 free(s->check_data);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200987 free(s);
988 s = s_next;
989 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +0200990
Willy Tarreaubaaee002006-06-26 02:48:02 +0200991 l = p->listen;
992 while (l) {
993 l_next = l->next;
Willy Tarreauf6e2cc72010-09-03 10:38:17 +0200994 unbind_listener(l);
995 delete_listener(l);
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +0100996 free(l->name);
997 free(l->counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200998 free(l);
999 l = l_next;
1000 }/* end while(l) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001001
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01001002 free(p->desc);
1003 free(p->fwdfor_hdr_name);
1004
Willy Tarreauff011f22011-01-06 17:51:27 +01001005 free_http_req_rules(&p->http_req_rules);
Willy Tarreau918ff602011-07-25 16:33:49 +02001006 free(p->task);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01001007
Willy Tarreaucf7f3202007-05-13 22:46:04 +02001008 pool_destroy2(p->req_cap_pool);
1009 pool_destroy2(p->rsp_cap_pool);
Simon Hormanb08584a2011-07-15 13:14:10 +09001010 pool_destroy2(p->table.pool);
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01001011
Willy Tarreau4d2d0982007-05-14 00:39:29 +02001012 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001013 p = p->next;
Willy Tarreau4d2d0982007-05-14 00:39:29 +02001014 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001015 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02001016
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001017 while (ua) {
1018 uap = ua;
1019 ua = ua->next;
1020
Willy Tarreaua534fea2008-08-03 12:19:50 +02001021 free(uap->uri_prefix);
1022 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02001023 free(uap->node);
1024 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001025
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01001026 userlist_free(uap->userlist);
Willy Tarreauff011f22011-01-06 17:51:27 +01001027 free_http_req_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01001028
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001029 free(uap);
1030 }
1031
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01001032 userlist_free(userlist);
1033
Willy Tarreaudd815982007-10-16 12:25:14 +02001034 protocol_unbind_all();
1035
Joe Williamsdf5b38f2010-12-29 17:05:48 +01001036 free(global.log_send_hostname); global.log_send_hostname = NULL;
Kevinm48936af2010-12-22 16:08:21 +00001037 free(global.log_tag); global.log_tag = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02001038 free(global.chroot); global.chroot = NULL;
1039 free(global.pidfile); global.pidfile = NULL;
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02001040 free(global.node); global.node = NULL;
1041 free(global.desc); global.desc = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02001042 free(fdtab); fdtab = NULL;
1043 free(oldpids); oldpids = NULL;
Willy Tarreaue9b26022011-08-01 20:57:55 +02001044 free(global_listener_queue_task); global_listener_queue_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001045
William Lallemand0f99e342011-10-12 17:50:54 +02001046 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
1047 LIST_DEL(&log->list);
1048 free(log);
1049 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01001050 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
1051 LIST_DEL(&wl->list);
1052 free(wl);
1053 }
1054
Willy Tarreauc6ca1a02007-05-13 19:43:47 +02001055 pool_destroy2(pool2_session);
Willy Tarreau7341d942007-05-13 19:56:02 +02001056 pool_destroy2(pool2_buffer);
Willy Tarreau332f8bf2007-05-13 21:36:56 +02001057 pool_destroy2(pool2_requri);
Willy Tarreauc6ca1a02007-05-13 19:43:47 +02001058 pool_destroy2(pool2_task);
Willy Tarreau086b3b42007-05-13 21:45:51 +02001059 pool_destroy2(pool2_capture);
Willy Tarreau63963c62007-05-13 21:29:55 +02001060 pool_destroy2(pool2_appsess);
Willy Tarreaue4d7e552007-05-13 20:19:55 +02001061 pool_destroy2(pool2_pendconn);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02001062 pool_destroy2(pool2_sig_handlers);
Willy Tarreau34eb6712011-10-24 18:15:04 +02001063 pool_destroy2(pool2_hdr_idx);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001064
1065 if (have_appsession) {
Willy Tarreau63963c62007-05-13 21:29:55 +02001066 pool_destroy2(apools.serverid);
1067 pool_destroy2(apools.sessid);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001068 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001069
1070 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001071} /* end deinit() */
1072
Willy Tarreaubb545b42010-08-25 12:58:59 +02001073/* sends the signal <sig> to all pids found in <oldpids>. Returns the number of
1074 * pids the signal was correctly delivered to.
1075 */
1076static int tell_old_pids(int sig)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001077{
1078 int p;
Willy Tarreaubb545b42010-08-25 12:58:59 +02001079 int ret = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001080 for (p = 0; p < nb_oldpids; p++)
Willy Tarreaubb545b42010-08-25 12:58:59 +02001081 if (kill(oldpids[p], sig) == 0)
1082 ret++;
1083 return ret;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001084}
1085
Willy Tarreau918ff602011-07-25 16:33:49 +02001086/* Runs the polling loop */
Willy Tarreau4f60f162007-04-08 16:39:58 +02001087void run_poll_loop()
1088{
Willy Tarreau0c303ee2008-07-07 00:09:58 +02001089 int next;
Willy Tarreau4f60f162007-04-08 16:39:58 +02001090
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001091 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02001092 while (1) {
Willy Tarreau29857942009-05-10 09:01:21 +02001093 /* check if we caught some signals and process them */
1094 signal_process_queue();
1095
Willy Tarreau58b458d2008-06-29 22:40:23 +02001096 /* Check if we can expire some tasks */
1097 wake_expired_tasks(&next);
1098
1099 /* Process a few tasks */
Willy Tarreaud825eef2007-05-12 22:35:00 +02001100 process_runnable_tasks(&next);
Willy Tarreau4f60f162007-04-08 16:39:58 +02001101
Willy Tarreauaf7ad002010-08-31 15:39:26 +02001102 /* stop when there's nothing left to do */
1103 if (jobs == 0)
Willy Tarreau4f60f162007-04-08 16:39:58 +02001104 break;
1105
Willy Tarreau58b458d2008-06-29 22:40:23 +02001106 /* The poller will ensure it returns around <next> */
Willy Tarreau0c303ee2008-07-07 00:09:58 +02001107 cur_poller.poll(&cur_poller, next);
Willy Tarreau4f60f162007-04-08 16:39:58 +02001108 }
1109}
1110
Willy Tarreaue9b26022011-08-01 20:57:55 +02001111/* This is the global management task for listeners. It enables listeners waiting
1112 * for global resources when there are enough free resource, or at least once in
1113 * a while. It is designed to be called as a task.
1114 */
1115static struct task *manage_global_listener_queue(struct task *t)
1116{
1117 int next = TICK_ETERNITY;
Willy Tarreaue9b26022011-08-01 20:57:55 +02001118 /* queue is empty, nothing to do */
1119 if (LIST_ISEMPTY(&global_listener_queue))
1120 goto out;
1121
1122 /* If there are still too many concurrent connections, let's wait for
1123 * some of them to go away. We don't need to re-arm the timer because
1124 * each of them will scan the queue anyway.
1125 */
1126 if (unlikely(actconn >= global.maxconn))
1127 goto out;
1128
1129 /* We should periodically try to enable listeners waiting for a global
1130 * resource here, because it is possible, though very unlikely, that
1131 * they have been blocked by a temporary lack of global resource such
1132 * as a file descriptor or memory and that the temporary condition has
1133 * disappeared.
1134 */
Willy Tarreauabacc2c2011-09-07 14:26:33 +02001135 dequeue_all_listeners(&global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +02001136
1137 out:
1138 t->expire = next;
1139 task_queue(t);
1140 return t;
1141}
Willy Tarreau4f60f162007-04-08 16:39:58 +02001142
Willy Tarreaubaaee002006-06-26 02:48:02 +02001143int main(int argc, char **argv)
1144{
1145 int err, retry;
1146 struct rlimit limit;
1147 FILE *pidfile = NULL;
Emeric Bruncf20bf12010-10-22 16:06:11 +02001148 char errmsg[100];
Willy Tarreaubaaee002006-06-26 02:48:02 +02001149
Emeric Bruncf20bf12010-10-22 16:06:11 +02001150 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02001151 signal_register_fct(SIGQUIT, dump, SIGQUIT);
1152 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
1153 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001154
Willy Tarreaue437c442010-03-17 18:02:46 +01001155 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
1156 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
1157 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02001158 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02001159 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001160
Willy Tarreaudc23a922011-02-16 11:10:36 +01001161 /* ulimits */
1162 if (!global.rlimit_nofile)
1163 global.rlimit_nofile = global.maxsock;
1164
1165 if (global.rlimit_nofile) {
1166 limit.rlim_cur = limit.rlim_max = global.rlimit_nofile;
1167 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
1168 Warning("[%s.main()] Cannot raise FD limit to %d.\n", argv[0], global.rlimit_nofile);
1169 }
1170 }
1171
1172 if (global.rlimit_memmax) {
1173 limit.rlim_cur = limit.rlim_max =
1174 global.rlimit_memmax * 1048576 / global.nbproc;
1175#ifdef RLIMIT_AS
1176 if (setrlimit(RLIMIT_AS, &limit) == -1) {
1177 Warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
1178 argv[0], global.rlimit_memmax);
1179 }
1180#else
1181 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
1182 Warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
1183 argv[0], global.rlimit_memmax);
1184 }
1185#endif
1186 }
1187
Willy Tarreaubaaee002006-06-26 02:48:02 +02001188 /* We will loop at most 100 times with 10 ms delay each time.
1189 * That's at most 1 second. We only send a signal to old pids
1190 * if we cannot grab at least one port.
1191 */
1192 retry = MAX_START_RETRIES;
1193 err = ERR_NONE;
1194 while (retry >= 0) {
1195 struct timeval w;
1196 err = start_proxies(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01001197 /* exit the loop on no error or fatal error */
1198 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001199 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02001200 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001201 break;
1202
1203 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
1204 * listening sockets. So on those platforms, it would be wiser to
1205 * simply send SIGUSR1, which will not be undoable.
1206 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02001207 if (tell_old_pids(SIGTTOU) == 0) {
1208 /* no need to wait if we can't contact old pids */
1209 retry = 0;
1210 continue;
1211 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001212 /* give some time to old processes to stop listening */
1213 w.tv_sec = 0;
1214 w.tv_usec = 10*1000;
1215 select(0, NULL, NULL, NULL, &w);
1216 retry--;
1217 }
1218
1219 /* Note: start_proxies() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01001220 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreauf68da462009-06-09 14:36:00 +02001221 if (retry != MAX_START_RETRIES && nb_oldpids) {
1222 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001223 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02001224 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001225 exit(1);
1226 }
1227
1228 if (listeners == 0) {
1229 Alert("[%s.main()] No enabled listener found (check the <listen> keywords) ! Exiting.\n", argv[0]);
1230 /* Note: we don't have to send anything to the old pids because we
1231 * never stopped them. */
1232 exit(1);
1233 }
1234
Emeric Bruncf20bf12010-10-22 16:06:11 +02001235 err = protocol_bind_all(errmsg, sizeof(errmsg));
1236 if ((err & ~ERR_WARN) != ERR_NONE) {
1237 if ((err & ERR_ALERT) || (err & ERR_WARN))
1238 Alert("[%s.main()] %s.\n", argv[0], errmsg);
1239
Willy Tarreaudd815982007-10-16 12:25:14 +02001240 Alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
1241 protocol_unbind_all(); /* cleanup everything we can */
1242 if (nb_oldpids)
1243 tell_old_pids(SIGTTIN);
1244 exit(1);
Emeric Bruncf20bf12010-10-22 16:06:11 +02001245 } else if (err & ERR_WARN) {
1246 Alert("[%s.main()] %s.\n", argv[0], errmsg);
Willy Tarreaudd815982007-10-16 12:25:14 +02001247 }
1248
Willy Tarreaubaaee002006-06-26 02:48:02 +02001249 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02001250 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
1251 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001252
Willy Tarreaubaaee002006-06-26 02:48:02 +02001253 /* MODE_QUIET can inhibit alerts and warnings below this line */
1254
1255 global.mode &= ~MODE_STARTING;
1256 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
1257 /* detach from the tty */
1258 fclose(stdin); fclose(stdout); fclose(stderr);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001259 }
1260
1261 /* open log & pid files before the chroot */
1262 if (global.mode & MODE_DAEMON && global.pidfile != NULL) {
1263 int pidfd;
1264 unlink(global.pidfile);
1265 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
1266 if (pidfd < 0) {
1267 Alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
1268 if (nb_oldpids)
1269 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02001270 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001271 exit(1);
1272 }
1273 pidfile = fdopen(pidfd, "w");
1274 }
1275
Willy Tarreaub38651a2007-03-24 17:24:39 +01001276#ifdef CONFIG_HAP_CTTPROXY
1277 if (global.last_checks & LSTCHK_CTTPROXY) {
1278 int ret;
1279
1280 ret = check_cttproxy_version();
1281 if (ret < 0) {
1282 Alert("[%s.main()] Cannot enable cttproxy.\n%s",
1283 argv[0],
1284 (ret == -1) ? " Incorrect module version.\n"
1285 : " Make sure you have enough permissions and that the module is loaded.\n");
Willy Tarreaudd815982007-10-16 12:25:14 +02001286 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01001287 exit(1);
1288 }
1289 }
1290#endif
1291
1292 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
1293 Alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
Willy Tarreau4e30ed72009-02-04 18:02:48 +01001294 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02001295 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01001296 exit(1);
1297 }
1298
Willy Tarreau4e30ed72009-02-04 18:02:48 +01001299 /* If the user is not root, we'll still let him try the configuration
1300 * but we inform him that unexpected behaviour may occur.
1301 */
1302 if ((global.last_checks & LSTCHK_NETADM) && getuid())
1303 Warning("[%s.main()] Some options which require full privileges"
1304 " might not work well.\n"
1305 "", argv[0]);
1306
Willy Tarreauf223cc02007-10-15 18:57:08 +02001307 /* chroot if needed */
1308 if (global.chroot != NULL) {
Willy Tarreau21337822012-04-29 14:11:38 +02001309 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Willy Tarreauf223cc02007-10-15 18:57:08 +02001310 Alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
1311 if (nb_oldpids)
1312 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02001313 protocol_unbind_all();
Willy Tarreauf223cc02007-10-15 18:57:08 +02001314 exit(1);
1315 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02001316 }
1317
Willy Tarreaubaaee002006-06-26 02:48:02 +02001318 if (nb_oldpids)
Willy Tarreaubb545b42010-08-25 12:58:59 +02001319 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001320
1321 /* Note that any error at this stage will be fatal because we will not
1322 * be able to restart the old pids.
1323 */
1324
1325 /* setgid / setuid */
1326 if (global.gid && setgid(global.gid) == -1) {
1327 Alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
Willy Tarreaudd815982007-10-16 12:25:14 +02001328 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001329 exit(1);
1330 }
1331
1332 if (global.uid && setuid(global.uid) == -1) {
1333 Alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
Willy Tarreaudd815982007-10-16 12:25:14 +02001334 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001335 exit(1);
1336 }
1337
1338 /* check ulimits */
1339 limit.rlim_cur = limit.rlim_max = 0;
1340 getrlimit(RLIMIT_NOFILE, &limit);
1341 if (limit.rlim_cur < global.maxsock) {
1342 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 +02001343 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock, global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001344 }
1345
1346 if (global.mode & MODE_DAEMON) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01001347 struct proxy *px;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001348 int ret = 0;
1349 int proc;
1350
1351 /* the father launches the required number of processes */
1352 for (proc = 0; proc < global.nbproc; proc++) {
1353 ret = fork();
1354 if (ret < 0) {
1355 Alert("[%s.main()] Cannot fork.\n", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02001356 protocol_unbind_all();
Willy Tarreaud6803712007-10-16 07:44:56 +02001357 exit(1); /* there has been an error */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001358 }
1359 else if (ret == 0) /* child breaks here */
1360 break;
1361 if (pidfile != NULL) {
1362 fprintf(pidfile, "%d\n", ret);
1363 fflush(pidfile);
1364 }
Willy Tarreaudcd47712007-11-04 23:35:08 +01001365 relative_pid++; /* each child will get a different one */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001366 }
1367 /* close the pidfile both in children and father */
1368 if (pidfile != NULL)
1369 fclose(pidfile);
Willy Tarreaud137dd32010-08-25 12:49:05 +02001370
1371 /* We won't ever use this anymore */
1372 free(oldpids); oldpids = NULL;
1373 free(global.chroot); global.chroot = NULL;
1374 free(global.pidfile); global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001375
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01001376 /* we might have to unbind some proxies from some processes */
1377 px = proxy;
1378 while (px != NULL) {
1379 if (px->bind_proc && px->state != PR_STSTOPPED) {
1380 if (!(px->bind_proc & (1 << proc)))
1381 stop_proxy(px);
1382 }
1383 px = px->next;
1384 }
1385
Willy Tarreaubaaee002006-06-26 02:48:02 +02001386 if (proc == global.nbproc)
1387 exit(0); /* parent must leave */
1388
1389 /* if we're NOT in QUIET mode, we should now close the 3 first FDs to ensure
1390 * that we can detach from the TTY. We MUST NOT do it in other cases since
1391 * it would have already be done, and 0-2 would have been affected to listening
1392 * sockets
1393 */
Willy Tarreau106cb762008-11-16 07:40:34 +01001394 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02001395 /* detach from the tty */
1396 fclose(stdin); fclose(stdout); fclose(stderr);
Willy Tarreau106cb762008-11-16 07:40:34 +01001397 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001398 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
1399 }
1400 pid = getpid(); /* update child's pid */
1401 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02001402 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001403 }
1404
Willy Tarreaudd815982007-10-16 12:25:14 +02001405 protocol_enable_all();
Willy Tarreau4f60f162007-04-08 16:39:58 +02001406 /*
1407 * That's it : the central polling loop. Run until we stop.
1408 */
1409 run_poll_loop();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001410
1411 /* Free all Hash Keys and all Hash elements */
1412 appsession_cleanup();
1413 /* Do some cleanup */
1414 deinit();
1415
1416 exit(0);
1417}
1418
1419
1420/*
1421 * Local variables:
1422 * c-indent-level: 8
1423 * c-basic-offset: 8
1424 * End:
1425 */