#!/bin/sh
# DHCP relay agent
#
# chkconfig:	345 80 20
# description:	DHCP relay agent

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

# Source networking configuration.
. /etc/sysconfig/network

# Demon specified configuration.
OPTIONS=""
. /etc/sysconfig/dhcp-relay

# Check that networking is up.
if is_yes "${NETWORKING}"; then
	if [ ! -f /var/lock/subsys/network -a "$1" != stop -a "$1" != status ]; then
		msg_network_down "DHCP realay"
		exit 1
	fi
else
	exit 0
fi

if [ -n "DHCP_RELAY_INTERFACES" ]; then
	for iface in $DHCP_RELAY_INTERFACES ; do
		OPTIONS="$OPTIONS -i $iface"
	done
fi

start() {
	if [ ! -f /var/lock/subsys/dhcp-relay ]; then
		msg_starting "DHCP relay"
		daemon dhcrelay $OPTIONS $DHCP_SERVERS_IP
		RETVAL=$?
		[ $RETVAL -eq 0 ] && touch /var/lock/subsys/dhcp-relay
	else
		msg_already_running "DHCP relay"
	fi
}

stop() {
	if [ -f /var/lock/subsys/dhcp-relay ]; then
		msg_stopping "DHCP relay"
		killproc dhcrelay
		rm -f /var/lock/subsys/dhcp-relay
	else
		msg_not_running "DHCP relay"
	fi
}

condrestart() {
	if [ -f /var/lock/subsys/dhcp-relay ]; then
		stop
		start
	else
		msg_not_running "DHCP relay"
		RETVAL=$1
	fi
}

RETVAL=0
# See how we were called.
case "$1" in
  start)
	start
	;;
  stop)
	stop
	;;
  restart)
	stop
	start
	;;
  try-restart)
	condrestart 0
	;;
  force-reload)
	condrestart 7
	;;
  status)
	status dhcrelay
	exit $?
	;;
  *)
	msg_usage "$0 {start|stop|restart|try-restart|force-reload|status}"
	exit 3
esac

exit $RETVAL