#!/bin/sh
# 
# asterisk:		Starts the asterisk service
# 
# Version:		@(#) /etc/rc.d/init.d/asterisk 1.0
# 
# chkconfig: 2345 95 10
# description:	Starts the asterisk service
# 
# processname:	asterisk
# 

# $Id$

TTY=9			# TTY (if you want one) for Asterisk to run on
CONSOLE=yes		# Whether or not you want a console
NOTIFY=root		# Who to notify about crashes
DUMPDROP=/tmp
HOSTNAME=`hostname`
ASTSBINDIR=/usr/sbin

if [ 0`readlink $0` = "0" ]; then
	CONFIGFILE=/etc/sysconfig/`basename $0`
else
	CONFIG0=`readlink $0`
	CONFIGFILE=/etc/sysconfig/`basename $CONFIG0`
fi

# Setup environment
cd /usr/src
if [ -f /usr/lib/asterisk/modules/chan_h323.so -a `grep -c ^noload=chan_h323.so /etc/asterisk/modules.conf` -eq 0 ]; then
	OPENH323DIR=/usr/src/h323/openh323
	PWLIBDIR=/usr/src/h323/pwlib
else
	OPENH323DIR=/usr/src/oh323/openh323
	PWLIBDIR=/usr/src/oh323/pwlib
fi

# Put overrides in /etc/sysconfig/asterisk
[ -f $CONFIGFILE ] && . $CONFIGFILE

LD_LIBRARY_PATH=$OPENH323DIR/lib:$PWLIBDIR/lib
export OPENH323DIR PWLIBDIR LD_LIBRARY_PATH

# Source function library.
. /etc/rc.d/init.d/functions

#
# Don't fork when running "safely"
#
ASTARGS="-p"
if [ "$TTY" != "" ]; then
	if [ -c /dev/tty${TTY} ]; then
		TTY=tty${TTY}
	elif [ -c /dev/vc/${TTY} ]; then
		TTY=vc/${TTY}
	else
		echo "Cannot find your TTY (${TTY})" >&2
		exit 1
	fi
	ASTARGS="${ASTARGS} -vvv"
	if [ "$CONSOLE" != "no" ]; then
		ASTARGS="${ASTARGS} -c"
	fi
fi
if [ ! -w ${DUMPDROP} ]; then	
	echo "Cannot write to ${DUMPDROP}" >&2
	exit 1
fi

#
# Let Asterisk dump core
#
ulimit -c unlimited

#launch_asterisk()
#{
#}

SIGMSG=("None", "Hangup" "Interrupt" "Quit" "Illegal instruction" "Trace trap" "IOT Trap" "Bus Error" "Floating-point exception" "Killed" "User-defined signal 1" "Segmentation violation" "User-defined signal 2" "Broken pipe" "Alarm clock" "Termination" "Stack fault")

run_asterisk()
{
	while :; do 

		if [ "$TTY" != "" ]; then
			cd /tmp
			stty sane < /dev/${TTY}
			asterisk ${ASTARGS} > /dev/${TTY} 2>&1 < /dev/${TTY}
		else
			cd /tmp
			asterisk ${ASTARGS}
		fi
		EXITSTATUS=$?
		echo "Asterisk ended with exit status $EXITSTATUS"
		if [ "$EXITSTATUS" = "0" ]; then
			# Properly shutdown....
			echo "Asterisk shutdown normally."
			exit 0
		elif [ $EXITSTATUS -gt 128 ]; then
			EXITSIGNAL=$(($EXITSTATUS - 128))
			EXITMSG=${SIGMSG[$EXITSIGNAL]}
			echo "Asterisk exited on signal $EXITSIGNAL - $EXITMSG."
			if [ "$NOTIFY" != "" ]; then
				echo "Asterisk exited on signal $EXITSIGNAL - $EXITMSG.  Might want to take a peek." | \
				mail -s "Asterisk Died ($HOSTNAME)" $NOTIFY
			fi
			if [ -f /tmp/core ]; then
				mv /tmp/core ${DUMPDROP}/core.`hostname`-`date -Iseconds` &
			fi
		else
			echo "Asterisk died with code $EXITSTATUS.  Aborting."
			if [ -f /tmp/core ]; then
				mv /tmp/core ${DUMPDROP}/core.`hostname`-`date -Iseconds` &
			fi
			exit 0
		fi
		echo "Automatically restarting Asterisk."
	done
}

case "$1" in
	start)
		# Check if Asterisk is already running.  If it is, then bug out, because
		# starting Asterisk when Asterisk is already running is very bad.
		VERSION=`${ASTSBINDIR}/asterisk -rx 'core show version'`
		if [ "`echo $VERSION | cut -c 1-8`" = "Asterisk" ]; then
			echo "Asterisk is already running.  $0 will exit now."
			exit 1
		fi

		gprintf "Starting asterisk: "
		run_asterisk >/dev/null 2>&1 &
		sleep 2	# Give it time to die
		succeeded=`pidof asterisk|awk '{print NF}'`
		if [ $succeeded = "0" ]; then
			failure
		else
			success
		fi
		echo
		;;
	stop)
		gprintf "Stopping asterisk: "
		asterisk -r -x "stop gracefully" >/dev/null 2>&1
		killall -9 mpg123 2>/dev/null
		success
		echo
		;;
	restart)
		$0 stop
		usleep 100000
		$0 start
		;;
	reload)
		gprintf "Reloading asterisk: "
		asterisk -r -x "reload" >/dev/null 2>&1
		success
		echo
		;;
	stopnow)
		gprintf "Stopping asterisk: "
		asterisk -r -x "stop now" >/dev/null 2>&1
		success
		echo
		;;
	restartnow)
		$0 stopnow
		$0 start
		;;
	fullrestart)
		$0 stop
		service zaptel restart
		$0 start
		;;
	fullrestartnow)
		$0 stopnow
		service zaptel restart
		$0 start
		;;
	status)
		succeeded=`pidof asterisk|awk '{print NF}'`
		if [ $succeeded = "0" ]; then
			echo "Asterisk is not running"
		else
			echo "Asterisk is currently running with $succeeded threads"
		fi
		;;
	*)
		gprintf "*** Usage: $0 {start|stop[now]|reload|[full]restart[now]|status}\n"
		exit 1
esac

exit 0