#! /bin/sh 
#
# Init script for denyhosts
#
# Author:	Marco Bertorello <marco@bertorello.ns0.it>.
#
### BEGIN INIT INFO
# Provides:          denyhosts
# Required-Start:    $syslog $local_fs $time
# Required-Stop:     $syslog $local_fs
# Default-Start:     2 3 4 5
# Default-Stop:	     0 1 6
# Short-Description: Start denyhosts and watch .
### END INIT INFO


# Using LSB funtions:
. /lib/lsb/init-functions

set -e

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DESC="DenyHosts"
NAME=denyhosts
DAEMON=/usr/bin/python
DAEMONCTL=/usr/share/denyhosts/denyhosts_ctl.py
PIDFILE=/var/run/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME
CONFIG=/etc/denyhosts.conf
FLAGS="--purge --config=$CONFIG"

# Function that starts the daemon/service.
d_start() {
	# Gracefully exit if the package has been removed.
	test -x $DAEMON || exit 5
	test -e $CONFIG || (log_failure_msg "Config file doesn't exists!" && log_end_msg 1)

	#check if HOSTS_DENY file exist 
	HOSTS_DENY=$(grep ^HOSTS_DENY $CONFIG  | cut -d = -f 2)
	test -e $HOSTS_DENY || touch $HOSTS_DENY

	if [ -e $PIDFILE ]; then
		pid=$(cat $PIDFILE)
		if kill -0 "$pid" > /dev/null; then
			log_success_msg "$DESC already running"
			return
		else
			log_success_msg "Removing stale PID file $PIDFILE."
			rm -f $PIDFILE
		fi
	fi
	log_daemon_msg "Starting $DESC" "$NAME"
	start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --startas $DAEMONCTL -- start $FLAGS >/dev/null
	log_end_msg $?
}

# Function that stops the daemon/service.
d_stop() {
	if [ -e $PIDFILE ]; then
		pid=$(cat $PIDFILE)
		if kill -0 "$pid" > /dev/null; then
			log_daemon_msg "Stopping $DESC" "$NAME"
			start-stop-daemon --stop --quiet --pidfile $PIDFILE
			log_end_msg $?
		else
			log_failure_msg "I can't stop $DESC" "Maybe it's NOT running?"
			rm -f $PIDFILE
		fi
	fi
}

# Function that sends a SIGHUP to the daemon/service.
case "$1" in
  start)
        d_start
	;;
  stop)
        d_stop
	;;
  restart|force-reload)
	log_daemon_msg "Restarting $DESC"
	d_stop || /bin/true
	sleep 1
	d_start
	log_daemon_msg "Done"
	;;
  *)
	log_daemon_msg "Usage: $SCRIPTNAME {start|stop|restart|force-reload}" >&2
	exit 3
	;;
esac

exit 0