#! /bin/sh

### BEGIN INIT INFO
# Provides:          knockd
# Required-Start:    $network $syslog
# Required-Stop:     $network $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: port-knock daemon
### END INIT INFO

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/sbin/knockd
NAME=knockd
PIDFILE=/var/run/$NAME.pid
DEFAULTS_FILE=/etc/default/knockd
DESC="Port-knock daemon"
OPTIONS=" -d"

umask 0037

test -f $DAEMON || exit 0

set -e

[ -f $DEFAULTS_FILE ] && . $DEFAULTS_FILE

. /lib/lsb/init-functions

[ "$KNOCKD_OPTS" ] && OPTIONS="$OPTIONS $KNOCKD_OPTS"

start_if_configured() {
	if [ $START_KNOCKD -ne 1 ]; then
                log_warning_msg "$NAME disabled: not starting. To enable it edit $DEFAULTS_FILE"
                exit 0
	else
		log_daemon_msg "Starting $DESC" "$NAME"
		if ! START_ERROR=`start-stop-daemon --start --oknodo --quiet --exec $DAEMON -- $OPTIONS 2>&1`; then
			# don't fail the upgrade if it fails to start
			echo -n " "
			log_action_end_msg 1 "$START_ERROR"
			exit 0
		else
			log_end_msg 0
		fi
        fi
}

case "$1" in
  start)
	start_if_configured
	;;
  stop)
	log_daemon_msg "Stopping $DESC" "$NAME"
	start-stop-daemon --stop --oknodo --quiet --exec $DAEMON
	log_end_msg 0
	;;
  restart|reload|force-reload)
	log_daemon_msg "Stopping $DESC" "$NAME"
	start-stop-daemon --stop --oknodo --quiet --exec $DAEMON
	log_end_msg 0
	sleep 1
	start_if_configured
	;;
  *)
        log_warning_msg "Usage: $0 {start|stop|restart|reload|force-reload}" >&2
	exit 1
	;;
esac

exit 0