#! /bin/bash
### BEGIN INIT INFO
# Provides:          sangoma-media-gateway
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Sangoma Media Gateway Ubuntu init script
### END INIT INFO

# Author: Arnaldo Pereira <arnaldo@sangoma.com> - Sangoma Technologies

# Do NOT "set -e"

# smg specific options
NSG_PROD_NAME="Netborder SS7 Gateway"
NSG_SERVICE_NAME=nsg
NSG_CONF=/etc/nsg/nsg.conf
NSG_INSTALLDIR=/usr/local/nsg

#TS
NSG_INSTALLDIR=/usr/local/nsg

NSG_OPTIONS="-core -hp -nonat -base $NSG_INSTALLDIR -conf $NSG_INSTALLDIR/conf -log $NSG_INSTALLDIR/log -run $NSG_INSTALLDIR/run -db $NSG_INSTALLDIR/db -mod $NSG_INSTALLDIR/mod -ncwait"

# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC=$NSG_PROD_NAME
NAME=$NSG_SERVICE_NAME
DAEMON=$NSG_INSTALLDIR/bin/$NAME
DAEMON_ARGS=$NSG_OPTIONS
PIDFILE=/var/run/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME

if [ -z "$NSG_INSTALLDIR" ]
then
	if [ ! -f $NSG_CONF ]
	then
		echo "FATAL: There is no $NSG_CONF file!!"
		exit
	fi
	. $NSG_CONF
fi

export LD_LIBRARY_PATH="$NSG_INSTALLDIR/lib"

# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 0

# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME

# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh

# Define LSB log_* functions.
# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
. /lib/lsb/init-functions

nsg_setlimits() {
        ulimit -c unlimited
        ulimit -d unlimited
        ulimit -f unlimited
        ulimit -n 999999
        ulimit -v unlimited
        ulimit -s 240
        ulimit -l unlimited
        return 0
}

#
# Function that starts the daemon/service
#
do_start()
{
	nsg_setlimits	

	# Return
	#   0 if daemon has been started
	#   1 if daemon was already running
	#   2 if daemon could not be started
	start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \
		|| return 1
	start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- \
		$DAEMON_ARGS \
		|| return 2
}

do_stop()
{
	# Return
	#   0 if daemon has been stopped
	#   1 if daemon was already stopped
	#   2 if daemon could not be stopped
	#   other if a failure occurred
	$DAEMON $DAEMON_ARGS -stop
	start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --exec $DAEMON
	RETVAL="$?"
	[ "$RETVAL" = 2 ] && return 2
	# Wait for children to finish too if this is a daemon that forks
	# and if the daemon is only ever run from this initscript.
	# If the above conditions are not satisfied then add some other code
	# that waits for the process to drop all resources that could be
	# needed by services started subsequently.  A last resort is to
	# sleep for some time.
	start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON
	[ "$?" = 2 ] && return 2
	# Many daemons don't delete their pidfiles when they exit.
	rm -f $PIDFILE
	return "$RETVAL"
}

do_reload() {
	start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --exec $DAEMON
	return 0
}

case "$1" in
  start)
	[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
	do_start
	case "$?" in
		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
	esac
	;;
  stop)
	[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
	do_stop
	case "$?" in
		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
	esac
	;;
  status)
       status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
       ;;
  reload|force-reload)
	#
	# If do_reload() is not implemented then leave this commented out
	# and leave 'force-reload' as an alias for 'restart'.
	#
	log_daemon_msg "Reloading $DESC" "$NAME"
	do_reload
	log_end_msg $?
	;;
  restart|force-reload)
	log_daemon_msg "Restarting $DESC" "$NAME"
	do_stop
	case "$?" in
	  0|1)
		do_start
		case "$?" in
			0) log_end_msg 0 ;;
			1) log_end_msg 1 ;; # Old process is still running
			*) log_end_msg 1 ;; # Failed to start
		esac
		;;
	  *)
	  	# Failed to stop
		log_end_msg 1
		;;
	esac
	;;
  *)
	echo "Usage: $SCRIPTNAME {start|stop|status|restart|reload|force-reload}" >&2
	exit 3
	;;
esac

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