main.c

/*
 * Copyright (C) 2001-2003 FhG Fokus
 * Copyright (C) 2005-2006 Voice Sistem S.R.L
 *
 * This file is part of opensips, a free SIP server.
 *
 * opensips is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version
 *
 * opensips is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
 *
 * History:
 * -------
 *  2002-01-29  argc/argv globalized via my_{argc|argv} (jiri)
 *  2003-01-23  mhomed added (jiri)
 *  2003-03-19  replaced all malloc/frees w/ pkg_malloc/pkg_free (andrei)
 *  2003-03-29  pkg cleaners for fifo and script callbacks introduced (jiri)
 *  2003-03-31  removed snmp part (obsolete & no place in core) (andrei)
 *  2003-04-06  child_init called in all processes (janakj)
 *  2003-04-08  init_mallocs split into init_{pkg,shm}_mallocs and
 *               init_shm_mallocs called after cmd. line parsing (andrei)
 *  2003-04-15  added tcp_disable support (andrei)
 *  2003-05-09  closelog() before openlog to force opening a new fd
 *              (needed on solaris) (andrei)
 *  2003-06-11  moved all signal handlers init. in install_sigs and moved it
 *              after daemonize (so that we won't catch anymore our own
 *              SIGCHLD generated when becoming session leader) (andrei)
 *              changed is_main default value to 1 (andrei)
 *  2003-06-28  kill_all_children is now used instead of kill(0, sig)
 *              see comment above it for explanations. (andrei)
 *  2003-06-29  replaced port_no_str snprintf w/ int2str (andrei)
 *  2003-10-10  added switch for config check (-c) (andrei)
 *  2003-10-24  converted to the new socket_info lists (andrei)
 *  2004-03-30  core dump is enabled by default
 *              added support for increasing the open files limit    (andrei)
 *  2004-04-28  sock_{user,group,uid,gid,mode} added
 *              user2uid() & user2gid() added  (andrei)
 *  2004-09-11  added timeout on children shutdown and final cleanup
 *               (if it takes more than 60s => something is definitely wrong
 *                => kill all or abort)  (andrei)
 *              force a shm_unlock before cleaning-up, in case we have a
 *               crashed childvwhich still holds the lock  (andrei)
 *  2004-12-02  removed -p, extended -l to support [proto:]address[:port],
 *               added parse_phostport, parse_proto (andrei)
 *  2005-06-16  always record the pid in pt[process_no].pid twice: once in the
 *               parent & once in the child to avoid a short window when one
 *               of them might use it "unset" (andrei)
 *  2005-12-22  added tos configurability (thanks to Andreas Granig)
 *  2006-04-26  2-stage TLS init: before and after config file parsing (klaus)
 */

/*!
 * \file main.c
 * \brief Command line parsing, initializiation and server startup.
 *
 * Contains methods for parsing the command line, the initialization of
 * the execution environment (signals, config file parsing) and forking
 * the TCP, UDP, timer and fifo children.
 */

#include "reactor_defs.h" /*keep this first*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <ctype.h>
#include <string.h>
#include <netdb.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <arpa/inet.h>
#include <sys/utsname.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <pwd.h>
#include <grp.h>
#include <signal.h>
#include <time.h>
#include <locale.h>

#include <sys/ioctl.h>
#include <net/if.h>
#ifdef HAVE_SYS_SOCKIO_H
#include <sys/sockio.h>
#endif

#include "help_msg.h"
#include "config.h"
#include "cfg_pp.h"
#include "cfg_reload.h"
#include "dprint.h"
#include "daemonize.h"
#include "route.h"
#include "bin_interface.h"
#include "globals.h"
#include "mem/mem.h"
#include "mem/shm_mem.h"
#include "mem/rpm_mem.h"
#include "sr_module.h"
#include "timer.h"
#include "ipc.h"
#include "parser/msg_parser.h"
#include "ip_addr.h"
#include "resolve.h"
#include "parser/parse_hname2.h"
#include "parser/digest/digest_parser.h"
#include "name_alias.h"
#include "hash_func.h"
#include "pt.h"
#include "script_cb.h"
#include "dset.h"
#include "blacklists.h"
#include "xlog.h"
#include "ipc.h"

#include "pt.h"
#include "ut.h"
#include "serialize.h"
#include "statistics.h"
#include "status_report.h"
#include "core_stats.h"
#include "pvar.h"
#include "signals.h"
#include "shutdown.h"
#include "poll_types.h"
#include "net/net_tcp.h"
#include "net/net_udp.h"

#include "version.h"
#include "mi/mi_core.h"
#include "db/db_insertq.h"
#include "cachedb/cachedb.h"
#include "net/trans.h"

#include "test/unit_tests.h"
#include "lib/dbg/profiling.h"

#include "ssl_tweaks.h"

#include "main_script.h"

/* global vars */

#ifdef VERSION_NODATE
static char compiled[] =  "" ;
#else
#ifdef VERSION_DATE
static const char compiled[] =  VERSION_DATE ;
#else
static const char compiled[] =  __TIME__ " " __DATE__ ;
#endif
#endif

static int own_pgid = 0; /* whether or not we have our own pgid (and it's ok
			    to use kill(0, sig) */

static char* version=OPENSIPS_FULL_VERSION;
static char* flags=OPENSIPS_COMPILE_FLAGS;

static int user_id = 0;
static int group_id = 0;

const struct scm_version core_scm_ver = {
	.type = VERSIONTYPE,
	.rev = THISREVISION
};

/**
 * Print compile-time constants
 */
static void print_ct_constants(void)
{
#ifdef ADAPTIVE_WAIT
	printf("ADAPTIVE_WAIT_LOOPS=%d, ", ADAPTIVE_WAIT_LOOPS);
#endif
	printf("MAX_RECV_BUFFER_SIZE %d, MAX_LISTEN %d,"
			" MAX_URI_SIZE %d, BUF_SIZE %d\n",
		MAX_RECV_BUFFER_SIZE, MAX_LISTEN, MAX_URI_SIZE,
		BUF_SIZE );
	printf("poll method support: %s.\n", poll_support);
	printf("%s revision: %s\n", core_scm_ver.type, core_scm_ver.rev);
}

static int
init_suid(void)
{
	/* all processes should have access to all the sockets (for sending)
	 * so we open all first*/
	return do_suid(user_id, group_id);
}

static int
init_shm_mem_dbg(void)
{
	if (shm_memlog_size)
		shm_mem_enable_dbg();
	return 0;
}

static const struct main_script main_script[] = {
	FN_HNDLR(init_reactor_size, <, 0, "internal reactor"),
	FN_HNDLR(init_timer, <, 0, "timer"),
	FN_HNDLR(init_shm_mem_dbg, <, 0, "shm_mem_enable_dbg"),
	FN_HNDLR(init_ipc, <, 0, "IPC support"),
	FN_HNDLR(init_serialization, !=, 0, "serialization"),
	FN_HNDLR(init_mi_core, <, 0, "MI core"),
	FN_HNDLR(evi_register_core, !=, 0, "register core events"),
	FN_HNDLR(init_black_lists, !=, 0, "black list engine"),
	FN_HNDLR(resolv_blacklist_init, !=, 0, "resolver's blacklist"),
	FN_HNDLR(init_dset, !=, 0, "SIP forking logic"),
	FN_HNDLR(init_db_support, !=, 0, "SQL database support"),
	FN_HNDLR(init_cdb_support, !=, 0, "CacheDB support"),
	FN_HNDLR(init_modules, !=, 0, "modules"),
	FN_HNDLR(init_auto_scaling, !=, 0, "auto-scaling support"),
	FN_HNDLR(init_xlog, <, 0, "xlog"),
	FN_HNDLR(register_route_timers, <, 0, "route_timers"),
	FN_HNDLR(init_pvar_support, !=, 0, "pseudo-variable support"),
	FN_HNDLR(init_multi_proc_support, !=, 0, "multi processes support"),
	FN_HNDLR(init_extra_avps, !=, 0, "avps"),
	FN_HNDLR(fix_rls, !=, 0, "routing lists"),
	FN_HNDLR(init_log_level, !=, 0, "logging levels"),
	FN_HNDLR(init_log_event_cons, <, 0, "log event consumer"),
	FN_HNDLR(trans_init_all_listeners, <, 0, "all SIP listeners"),
	FN_HNDLR(init_script_reload, <, 0, "cfg reload ctx"),
	FN_HNDLR(init_suid, ==, -1, "do_suid"),
	FN_HNDLR(run_post_fork_handlers, <, 0, "post-fork handlers"),
};

/**
 * Main loop, forks the children, bind to addresses,
 * handle signals.
 * \return don't return on sucess, -1 on error
 */
static int main_loop(void)
{
	static int chd_rank;
	int* startup_done = NULL;
	utime_t last_check = 0;
	int rc;
	static struct internal_fork_handler profiling_handler = {
		.desc = "_ProfilerStart_child()",
		.post_fork.in_child = _ProfilerStart_child,
		.post_fork.in_parent = _ProfilerStart_parent,
	};

	chd_rank=0;
	register_fork_handler(&profiling_handler);

	if (start_module_procs()!=0) {
		LM_ERR("failed to fork module processes\n");
		goto error;
	}

	if(sroutes->startup.a) {/* if a startup route was defined */
		startup_done = (int*)shm_malloc(sizeof(int));
		if(startup_done == NULL) {
			LM_ERR("No more shared memory\n");
			goto error;
		}
		*startup_done = 0;
	}

	/* fork for the timer process*/
	if (start_timer_processes()!=0) {
		LM_CRIT("cannot start timer process(es)\n");
		goto error;
	}

	/* fork all processes required by UDP network layer */
	if (udp_start_processes( &chd_rank, startup_done)<0) {
		LM_CRIT("cannot start UDP processes\n");
		goto error;
	}

	/* fork all processes required by TCP network layer */
	if (tcp_start_processes( &chd_rank, startup_done)<0) {
		LM_CRIT("cannot start TCP processes\n");
		goto error;
	}

	/* fork for the extra timer processes */
	if (start_timer_extra_processes( &chd_rank )!=0) {
		LM_CRIT("cannot start timer extra process(es)\n");
		goto error;
	}

	/* fork the TCP listening process */
	if (tcp_start_listener()<0) {
		LM_CRIT("cannot start TCP listener process\n");
		goto error;
	}

	/* this is the main process -> it shouldn't send anything */
	bind_address=0;

	if (startup_done) {
		if (*startup_done==0)
			LM_CRIT("BUG: startup route defined, but not run :( \n");
		shm_free(startup_done);
	}

	sr_set_core_status( STATE_RUNNING, MI_SSTR("running"));
	sr_add_core_report( MI_SSTR("initialization completed, ready now") );

	/* main process left */
	is_main=1;
	set_proc_attrs("attendant");
	pt[process_no].flags |= OSS_PROC_IS_RUNNING|OSS_PROC_NO_IPC|OSS_PROC_NO_LOAD;

	if (testing_framework) {
		if (init_child(1) < 0) {
			LM_ERR("error in init_child for First Worker\n");
			report_failure_status();
			goto error;
		}

		rc = run_unit_tests();
		shutdown_opensips(rc);
	}

	report_conditional_status( (!no_daemon_mode), 0);

	if (auto_scaling_enabled) {
		/* re-create the status pipes to collect the status of the
		 * dynamically forked processes */
		if (create_status_pipe() < 0) {
			LM_ERR("failed to create status pipe\n");
			goto error;
		}
		/* keep both ends on the status pipe as we will keep forking 
		 * processes, so we will need to pass write-end to the new children;
		 * of course, we will need the read-end, here in the main proc */
		last_check = get_uticks();
	}

	if (set_log_event_cons_cfg_state() < 0) {
		LM_ERR("Failed to set the config state for event consumer\n");
		goto error;
	}

	for(;;){
			handle_sigs();
			if (auto_scaling_enabled) {
				sleep( auto_scaling_cycle );
				if ( (get_uticks()-last_check) >= (utime_t)auto_scaling_cycle*1000000) {
					do_workers_auto_scaling();
					last_check = get_uticks();
				} else {
					sleep_us( last_check + auto_scaling_cycle*1000000 -
						get_uticks() );
				}
			} else
				pause();
	}

	/*return 0; */
error:
	is_main=1;  /* if we are here, we are the "main process",
				  any forked children should exit with exit(-1) and not
				  ever use return */
	report_failure_status();
	return -1;

}



/**
 * Main routine, start of the program execution.
 * \param argc the number of arguments
 * \param argv pointer to the arguments array
 * \return don't return on sucess, -1 on error
 * \see main_loop
 */
int main(int argc, char** argv)
{
	int c, n;
	char *tmp;
	int tmp_len;
	int port;
	int proto;
	int protos_no;
	char *options;
	int ret;
	unsigned int seed;
	int rfd;
	int procs_no;

	/*init*/
	ret=-1;
	my_argc=argc; my_argv=argv;

	/* process pkg mem size from command line */
	opterr=0;

	options="A:f:cCm:M:b:l:n:N:rRvdDFEVhw:t:u:g:p:P:G:W:o:a:k:s:"
#ifdef UNIT_TESTS
	"T:"
#endif
	;

	while((c=getopt(argc,argv,options))!=-1){
		switch(c){
			case 'M':
					pkg_mem_size=strtol(optarg, &tmp, 10) * 1024 * 1024;
					if (tmp &&(*tmp)){
						LM_ERR("bad pkgmem size number: -m %s\n", optarg);
						goto error00;
					}
					break;
			case 'm':
					shm_mem_size=strtol(optarg, &tmp, 10) * 1024 * 1024;
					if (tmp &&(*tmp)){
						LM_ERR("bad shmem size number: -m %s\n", optarg);
						goto error00;
					}
					break;
			case 'd':
					*log_level = debug_mode ? L_DBG : (*log_level)+1;
					break;
			case 'u':
					user=optarg;
					break;
			case 'g':
					group=optarg;
					break;
			case 'a':
					if (set_global_mm(optarg) < 0) {
						LM_ERR("current build does not support "
						       "this allocator (-a %s)\n", optarg);
						goto error00;
					}
					break;
			case 'k':
					if (set_pkg_mm(optarg) < 0) {
						LM_ERR("current build does not support "
						       "this allocator (-k %s)\n", optarg);
						goto error00;
					}
					break;
			case 's':
					if (set_shm_mm(optarg) < 0) {
						LM_ERR("current build does not support "
						       "this allocator (-s %s)\n", optarg);
						goto error00;
					}
					break;
			case 'e':
					if (set_rpm_mm(optarg) < 0) {
						LM_ERR("current build does not support "
						       "this allocator (-e %s)\n", optarg);
						goto error00;
					}
					break;
		}
	}

	/* get uid/gid */
	if (user){
		if (user2uid(&user_id, &group_id, user)<0){
			LM_ERR("bad user name/uid number: -u %s\n", user);
			goto error00;
		}
	}
	if (group){
		if (group2gid(&group_id, group)<0){
			LM_ERR("bad group name/gid number: -u %s\n", group);
			goto error00;
		}
	}

	/*init pkg mallocs (before parsing cfg but after parsing cmd line !)*/
	if (init_pkg_mallocs()==-1)
		goto error00;

	if ( (sroutes=new_sroutes_holder(0))==NULL )
		goto error00;

	/* we want to be sure that from now on, all the floating numbers are 
	 * using the dot as separator. This is a real issue when printing the
	 * floats for SQL ops, where the dot must be used */
	setlocale( LC_NUMERIC, "POSIX");

	/* process command line (get port no, cfg. file path etc) */
	/* first reset getopt */
	optind = 1;
	while((c=getopt(argc,argv,options))!=-1){
		switch(c){
			case 'f':
					cfg_file=optarg;
					break;
			case 'C':
					config_check |= 2;
			case 'c':
					if (config_check==3)
						break;
					config_check |= 1;
					break;
			case 'm':
			case 'M':
			case 'd':
			case 'a':
			case 'k':
			case 's':
			case 'e':
					/* ignoring, parsed previously */
					break;
			case 'b':
					maxbuffer=strtol(optarg, &tmp, 10);
					if (tmp &&(*tmp)){
						LM_ERR("bad max buffer size number: -b %s\n", optarg);
						goto error00;
					}
					break;
			case 'l':
					if (parse_phostport(optarg, strlen(optarg), &tmp, &tmp_len,
											&port, &proto)<0){
						LM_ERR("bad -l address specifier: %s\n", optarg);
						goto error00;
					}
					tmp[tmp_len]=0; /* null terminate the host */
					/* add a new addr. to our address list */
					if (add_cmd_listening_socket(tmp, port, proto)!=0){
						LM_ERR("failed to add new listen address\n");
						goto error00;
					}
					break;
			case 'n':
					udp_workers_no=strtol(optarg, &tmp, 10);
					if ((tmp==0) ||(*tmp)){
						LM_ERR("bad UDP workers number: -n %s\n", optarg);
						goto error00;
					}
					break;
			case 'v':
					check_via=1;
					break;
			case 'r':
					received_dns|=DO_DNS;
					break;
			case 'R':
					received_dns|=DO_REV_DNS;
				    break;
			case 'D':
					debug_mode=1;
					*log_level = L_DBG;
					break;
			case 'F':
					no_daemon_mode=1;
					break;
			case 'E':
					LM_ERR("-E option deprecated since 3.4, set \"stderror_enabled=yes\" "
					    "at the script level instead\n");
					goto error00;
			case 'N':
					tcp_workers_no=strtol(optarg, &tmp, 10);
					if ((tmp==0) ||(*tmp)){
						LM_ERR("bad TCP workers number: -N %s\n", optarg);
						goto error00;
					}
					break;
			case 'W':
					io_poll_method=get_poll_type(optarg);
					if (io_poll_method==POLL_NONE){
						LM_ERR("bad poll method name: -W %s\ntry "
							"one of %s.\n", optarg, poll_support);
						goto error00;
					}
					break;
			case 'V':
					printf("version: %s\n", version);
					printf("flags: %s\n", flags );
					print_ct_constants();
					printf("%s compiled on %s with %s\n", __FILE__,
							compiled, COMPILER );
					exit(0);
					break;
			case 'h':
					printf("version: %s\n", version);
					printf("%s",help_msg);
					exit(0);
					break;
			case 'w':
					working_dir=optarg;
					break;
			case 't':
					chroot_dir=optarg;
					break;
			case 'u':
					/* ignoring it, parsed previously */
					break;
			case 'g':
					/* ignoring it, parsed previously */
					break;
			case 'p':
					preproc=optarg;
					break;
			case 'P':
					pid_file=optarg;
					break;
			case 'G':
					pgid_file=optarg;
					break;
			case 'o':
					if (add_arg_var(optarg) < 0)
						LM_ERR("cannot add option %s\n", optarg);
					break;
			case 'A':
					default_global_address->s = optarg;
					default_global_address->len = strlen(optarg);
					break;
#ifdef UNIT_TESTS
			case 'T':
					LM_INFO("running in testing framework mode, for '%s'\n", optarg);
					testing_framework = 1;
					testing_module = optarg;
					if (strcmp(testing_module, "core")) {
						cfg_file = malloc(100);
						snprintf(cfg_file, 100, "modules/%s/test/opensips.cfg",
						         testing_module);
					}
					break;
#endif
			case '?':
					if (isprint(optopt))
						LM_ERR("Unknown option `-%c`.\n", optopt);
					else
						LM_ERR("Unknown option character `\\x%x`.\n", optopt);
					goto error00;
			case ':':
					LM_ERR("Option `-%c` requires an argument.\n", optopt);
					goto error00;
			default:
					abort();
		}
	}

	/* seed the prng, try to use /dev/urandom if possible */
	/* no debugging information is logged, because the standard
	   log level prior the config file parsing is L_NOTICE */
	seed=0;
	if ((rfd=open("/dev/urandom", O_RDONLY))!=-1){
try_again:
		if (read(rfd, (void*)&seed, sizeof(seed))==-1){
			if (errno==EINTR) goto try_again; /* interrupted by signal */
			LM_WARN("could not read from /dev/urandom (%d)\n", errno);
		}
		LM_DBG("initialize the pseudo random generator from "
			"/dev/urandom\n");
		LM_DBG("read %u from /dev/urandom\n", seed);
			close(rfd);
	}else{
		LM_WARN("could not open /dev/urandom (%d)\n", errno);
		LM_WARN("using a unsafe seed for the pseudo random number generator");
	}
	seed+=getpid()+time(0);
	LM_DBG("seeding PRNG with %u\n", seed);
	srand(seed);
	LM_DBG("test random number %u\n", rand());

	/*register builtin  modules*/
	register_builtin_modules();

	/* init avps */
	if (init_global_avps() != 0) {
		LM_ERR("error while initializing avps\n");
		goto error;
	}

	/*  init shm mallocs
	 *  this must be here
	 *     -to allow setting shm mem size from the command line
	 *     -it must be also before init_timer and init_tcp
	 *     -it must be after we know uid (so that in the SYSV sems case,
	 *        the sems will have the correct euid)
	 * --andrei */
	if (init_shm_mallocs()==-1)
		goto error;

	if (init_stats_collector() < 0) {
		LM_ERR("failed to initialize statistics\n");
		goto error;
	}

	if (init_status_report() < 0) {
		LM_ERR("failed to initialize status-report support\n");
		goto error;
	}

	sr_set_core_status( STATE_INITIALIZING, MI_SSTR("initializing"));
	sr_add_core_report( MI_SSTR("initializing") );

	if ((!testing_framework || strcmp(testing_module, "core"))
	        && parse_opensips_cfg(cfg_file, preproc, NULL) < 0) {
		LM_ERR("failed to parse config file %s\n", cfg_file);
		goto error00;
	}

	if (shm_memlog_size && init_dbg_shm_mallocs()==-1)
		goto error;

	/* shm statistics, module stat groups, memory warming */
	if (init_shm_post_yyparse() != 0) {
		LM_ERR("failed to init SHM memory\n");
		return ret;
	}

	if (init_log_cons_shm_table() < 0) {
		LM_ERR("Failed to initialize shm log consumers table\n");
		goto error;
	}

	if (config_check>1 && check_rls()!=0) {
		LM_ERR("bad function call in config file\n");
		return ret;
	}

	if (solve_module_dependencies(modules) != 0) {
		LM_ERR("failed to solve module dependencies\n");
		return -1;
	}

	/* init the resolver, before fixing the config */
	if (resolv_init() != 0) {
		LM_ERR("failed to init DNS resolver\n");
		return -1;
	}

	fix_poll_method( &io_poll_method );

	/* fix temporary listening sockets added in the cmd line */
	if (fix_cmd_listening_sockets() < 0) {
		LM_ERR("cannot add temproray listeners\n");
		return ret;
	}

	/* load transport protocols */
	protos_no = trans_load();
	if (protos_no < 0) {
		LM_ERR("cannot load transport protocols\n");
		goto error;
	} else if (protos_no == 0 && !testing_framework) {
		LM_ERR("no transport protocol loaded\n");
		goto error;
	} else
		LM_DBG("Loaded %d transport protocols\n", protos_no);

	/* fix parameters */
	if (working_dir==0) working_dir="/";

	if (fix_all_socket_lists()!=0){
		LM_ERR("failed to initialize list addresses\n");
		goto error00;
	}
	/* print all the listen addresses */
	printf("Listening on \n");
	print_all_socket_lists();
	printf("Aliases: \n");
	/*print_aliases();*/
	print_aliases();
	printf("\n");

	if (config_check){
		LM_NOTICE("config file ok, exiting...\n");
		return 0;
	}

	time(&startup_time);

	/*init UDP networking layer*/
	if (udp_init()<0){
		LM_CRIT("could not initialize tcp\n");
		goto error;
	}
	/*init TCP networking layer*/
	if (tcp_init()<0){
		LM_CRIT("could not initialize tcp\n");
		goto error;
	}

	if (create_status_pipe() < 0) {
		LM_ERR("failed to create status pipe\n");
		goto error;
	}

	if (testing_framework)
		debug_mode = 1;

	if (debug_mode) {
		LM_NOTICE("DEBUG MODE activated\n");
		if (no_daemon_mode==0) {
			LM_NOTICE("disabling daemon mode (found enabled)\n");
			no_daemon_mode = 1;
		}
		if (stderr_enabled==0) {
			LM_NOTICE("enabling logging to standard error (found disabled)\n");
			stderr_enabled = 1;
			set_log_consumer_mute_state(&str_init(STDERR_CONSUMER_NAME), 0);
		}
		if (syslog_enabled) {
			LM_NOTICE("disabling logging to syslog (found enabled)\n");
			syslog_enabled = 0;
			set_log_consumer_mute_state(&str_init(SYSLOG_CONSUMER_NAME), 1);
		}
		if (*log_level < L_DBG && (!testing_framework ||
		                           !strcmp(testing_module, "core"))) {
			LM_NOTICE("setting logging to debug level (found on %d)\n",
				*log_level);
			*log_level = L_DBG;
		}
		if (disable_core_dump) {
			LM_NOTICE("enabling core dumping (found off)\n");
			disable_core_dump = 0;
		}
		if (udp_count_processes(NULL)!=0) {
			if (udp_workers_no!=2) {
				LM_NOTICE("setting UDP children to 2 (found %d)\n",
					udp_workers_no);
				udp_workers_no = 2;
			}
		}
		if (tcp_count_processes(NULL)!=0) {
			procs_no = (tcp_workers_max_no>=2) ? 2 : tcp_workers_max_no;
			if (tcp_workers_no != procs_no) {
				LM_NOTICE("setting TCP children to %d (found %d)\n",
					procs_no, tcp_workers_no);
				tcp_workers_no = procs_no;
			}
		}

	} else { /* debug_mode */
		/* init_daemon */
		if ( daemonize((log_name==0)?argv[0]:log_name, &own_pgid) <0 )
			goto error;
	}

	/* install signal handlers */
	if (install_sigs() != 0){
		LM_ERR("could not install the signal handlers\n");
		goto error;
	}

	if (disable_core_dump) set_core_dump(0, 0);
	else set_core_dump(1, shm_mem_size+pkg_mem_size+4*1024*1024);
	if (open_files_limit>0) {
		if(set_open_fds_limit()<0){
			LM_ERR("ERROR: error could not increase file limits\n");
			goto error;
		}
	}

	/* print OpenSIPS version to log for history tracking */
	LM_NOTICE("version: %s\n", version);

	/* print some data about the configuration */
	LM_NOTICE("using %ld MB of shared memory, allocator: %s\n",
	          shm_mem_size/1024/1024, mm_str(mem_allocator_shm));
#if defined(PKG_MALLOC)
	LM_NOTICE("using %ld MB of private process memory, allocator: %s\n",
	          pkg_mem_size/1024/1024, mm_str(mem_allocator_pkg));
#else
	LM_NOTICE("using system memory for private process memory\n");
#endif

	for (n = 0; n < howmany(main_script, main_script[0]); n++) {
		int result = main_script[n].hndlr();
		pred_cmp_f pred_cmp = cmps_ops[main_script[n].pval];
		if (pred_cmp(result, main_script[n].pred)) {
			LM_ERR("failed to initialize %s!\n", main_script[n].desc);
			goto error;
		}
	}

	ret = main_loop();

error:
	/*kill everything*/
	kill_all_children(SIGTERM);
	/*clean-up*/
	cleanup(0);
error00:
	LM_NOTICE("Exiting....\n");
	_ProfilerStop();
	return ret;
}