#!/bin/sh
#
# chkconfig:	345 55 45
# description:	The arpwatch daemon attempts to keep track of ethernet/ip \
#		address pairings.
# processname:	arpwatch

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

# Get network config
. /etc/sysconfig/network

# Initial values
GLOBAL_OPTIONS=""

# Get service config
[ -f /etc/sysconfig/arpwatch ] && . /etc/sysconfig/arpwatch

# 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 "arpwatch"
		exit 1
	fi
else
	exit 0
fi

if is_yes "${NO_BOGON}"; then
	GLOBAL_OPTIONS="$GLOBAL_OPTIONS -N"
else
	if [ -n "${LOCAL_NETWORKS}" ]; then
		for i in ${LOCAL_NETWORKS}; do
			GLOBAL_OPTIONS="$GLOBAL_OPTIONS -n $i"
		done
	fi
fi

RETVAL=0
# See how we were called.
case "$1" in
  start)
	# Check if the service is already running?
	if [ ! -f /var/lock/subsys/arpwatch ]; then
		if [ -z "$INTERFACES" ]; then
			INTERFACES="`/sbin/ip link show \
			  | egrep '^[^ ].*' |egrep -v "NOARP|LOOPBACK" \
			  |sed 's/[0-9]*: \([a-zA-Z0-9]*\)[@:].*/\1/'|xargs`"
		fi
		[ ! -z "$NETWORKS" ] && NETWORKS="-n $NETWORKS"
		for IFC in $INTERFACES; do
			msg_starting "arpwatch ($IFC)"
			touch /var/lib/arpwatch/$IFC.dat
			chown 2:2 /var/lib/arpwatch/$IFC.dat
			OPTIONS="$GLOBAL_OPTIONS"
			if ! is_yes "${NO_BOGON}"; then
				eval IF_LOCAL_NETWORKS=\$${IFC}_LOCAL_NETWORKS
				if [ -n "${IF_LOCAL_NETWORKS}" ]; then
					for i in ${IF_LOCAL_NETWORKS}; do
						OPTIONS="$OPTIONS -n $i"
					done
				fi
			fi
			daemon arpwatch $NETWORKS -i $IFC -f /var/lib/arpwatch/$IFC.dat -u daemon $OPTIONS
			RETVAL=$?
			[ $RETVAL -eq 0 ] && touch /var/lock/subsys/arpwatch
		done
	else
		msg_already_running "arpwatch"
	fi
	;;
  stop)
	if [ -f /var/lock/subsys/arpwatch ]; then
		msg_stopping "arpwatch"
		killproc arpwatch
		rm -f /var/lock/subsys/arpwatch >/dev/null 2>&1
	else
		msg_not_running "arpwatch"
	fi
	;;
  status)
	status arpwatch
	exit $?
	;;
  restart|force-reload)
	$0 stop
	$0 start
	exit $?
	;;
  *)
	msg_usage "$0 {start|stop|restart|force-reload|status}"
	exit 3
esac

exit $RETVAL