#! /bin/sh

set -e

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/sbin/tor
NAME=tor
DESC="tor daemon"
TORPID=/var/run/tor/tor.pid
DEFAULTSFILE=/etc/default/$NAME
WAITFORDAEMON=35
ARGS=""
MAX_FILEDESCRIPTORS=4096

test -x $DAEMON || exit 0

# Include tor defaults if available
if [ -f $DEFAULTSFILE ] ; then
	. $DEFAULTSFILE
fi

wait_for_deaddaemon () {
	pid=$1
	sleep 1
	if test -n "$pid"
	then
		if kill -0 $pid 2>/dev/null
		then
			echo -n "."
			cnt=0
			while kill -0 $pid 2>/dev/null
			do
				cnt=`expr $cnt + 1`
				if [ $cnt -gt $WAITFORDAEMON ]
				then
					echo " FAILED."
					return 1
				fi
				sleep 1
				echo -n "."
			done
		fi
	fi
	return 0
}

case "$1" in
  start)
	if [ "$RUN_DAEMON" != "yes" ]; then
		echo "Not starting $DESC (Disabled in $DEFAULTSFILE)."
	else
		echo "Starting $DESC: $NAME..."
		ulimit -n $MAX_FILEDESCRIPTORS
		start-stop-daemon --start --quiet --oknodo \
			--chuid debian-tor:debian-tor \
			--pidfile $TORPID \
			--exec $DAEMON -- $ARGS
		echo "done."
	fi
	;;
  stop)
	echo -n "Stopping $DESC: "
	pid=`cat $TORPID 2>/dev/null` || true
	if test ! -f $TORPID -o -z "$pid"
	then
		echo "not running (there is no $TORPID)."
	elif start-stop-daemon --stop --signal INT --quiet --pidfile $TORPID --exec $DAEMON
	then
		wait_for_deaddaemon $pid
		echo "$NAME."
	elif kill -0 $pid 2>/dev/null
	then
		echo "FAILED (Is $pid not $NAME?  Is $DAEMON a different binary now?)."
	else
		echo "FAILED ($DAEMON died: process $pid not running; or permission denied)."
	fi
	;;
  reload|force-reload)
	echo -n "Reloading $DESC configuration: "
	pid=`cat $TORPID 2>/dev/null` || true
	if test ! -f $TORPID -o -z "$pid"
	then
		echo "not running (there is no $TORPID)."
	elif start-stop-daemon --stop --signal 1 --quiet --pidfile $TORPID --exec $DAEMON
	then
		echo "$NAME."
	elif kill -0 $pid 2>/dev/null
	then
		echo "FAILED (Is $pid not $NAME?  Is $DAEMON a different binary now?)."
	else
		echo "FAILED ($DAEMON died: process $pid not running; or permission denied)."
	fi
	;;
  restart)
	$0 stop
	sleep 1
	$0 start
	;;
  *)
	echo "Usage: $0 {start|stop|restart|reload|force-reload}" >&2
	exit 1
	;;
esac

exit 0