#!/bin/sh
#
# $Id: dhcp3-relay,v 1.1 2004/04/16 15:41:08 ml Exp $
#

# What servers should the DHCP relay forward requests to?
# e.g: SERVERS="192.168.0.1"
SERVERS=""

# On what interfaces should the DHCP relay (dhrelay) serve DHCP requests?
INTERFACES=""

# Additional options that are passed to the DHCP relay daemon?
OPTIONS=""

# Read configuration variable file if it is present
CFG_FILE="/etc/default/dhcrelay"
[ -r "${CFG_FILE}" ] && . "${CFG_FILE}"

# Sanity checks
test -f /usr/sbin/dhcrelay || exit 0
test -n "$INTERFACES" || exit 0
test -n "$SERVERS" || exit 0

# Build command line for interfaces (will be passed to dhrelay below.)
IFCMD=""
for I in $INTERFACES; do
	IFCMD=${IFCMD}"-i "${I}" "
done

DHCRELAYPID=/var/run/dhcrelay.pid

case "$1" in
	start)
		printf "Starting DHCP relay: "
		start-stop-daemon -S -q -x /usr/sbin/dhcrelay -- -q $OPTIONS $IFCMD $SERVERS
		[ $? = 0 ] && echo "OK" || echo "FAIL"
		;;
	stop)
		printf "Stopping DHCP relay: "
		start-stop-daemon -K -q -x /usr/sbin/dhcrelay
		[ $? = 0 ] && echo "OK" || echo "FAIL"
		;;
	restart | force-reload)
		$0 stop
		$0 start
		;;
	*)
		echo "Usage: $0 {start|stop|restart|force-reload}"
		exit 1
esac

exit 0