#!/bin/sh
########################################################################
# Begin $NETWORK_DEVICES/services/ipv4-static-route
#
# Description : IPV4 Static Route Script
#
# Authors     : Kevin P. Fleming - kpfleming@linuxfromscratch.org
#
# Version     : 00.00
#
# Notes       :
#
########################################################################

. /lib/network/hook-header

HOOK_NAME=ipv4-static-route
HOOK_TYPE=zone

function check_config() {
	args=
	case "${TYPE}" in
		""|network)
			need_ip=1
			need_gateway=1
			;;
	
		default)
			need_gateway=1
			args="${args} default"
			desc="default"
			;;
	
		host)
			need_ip=1
			;;
	
		unreachable)
			need_ip=1
			args="${args} unreachable"
			desc="unreachable"
			;;
	
		*)
			log_failure_msg "Unknown route type (${TYPE}) in ${CONFIG}, cannot continue."
			exit ${EXIT_CONF_ERROR}
			;;
	esac
	
	if [ -n "${need_ip}" ]; then
		if [ -z "${IP}" ]; then
			log_failure_msg "IP variable missing from ${CONFIG}, cannot continue."
			exit ${EXIT_CONF_ERROR}
		fi
	
		if [ -z "${PREFIX}" ]; then
			log_failure_msg "PREFIX variable missing from ${CONFIG}, cannot continue."
			exit ${EXIT_CONF_ERROR}
		fi
		
		args="${args} ${IP}/${PREFIX}"
		desc="${desc}${IP}/${PREFIX}"
	fi
	
	if [ -n "${need_gateway}" ]; then
		if [ -z "${GATEWAY}" ]; then
			log_failure_msg "GATEWAY variable missing from ${CONFIG}, cannot continue."
			exit ${EXIT_CONF_ERROR}
		fi
		args="${args} via ${GATEWAY}"
	fi
}

case "${action}" in
	add)
		while [ $# -gt 0 ]; do
			case "${1}" in
				--ip=*)
					IP=${1#--ip=}
					;;
				--gateway=*)
					GATEWAY=${1#--gateway=}
					;;
				--prefix=*)
					PREFIX=${1#--prefix=}
					;;
				--type=*)
					TYPE=${1#--type=}
					;;
			esac
			shift
		done
		check_config
		cat <<EOF >${CONFIG_ZONES}/${zone}/${HOOK_NAME}_${IP-${GATEWAY}}
HOOK="${HOOK_NAME}"
IP="${IP}"
GATEWAY="${GATEWAY}"
PREFIX="${PREFIX}"
TYPE="${TYPE}"
EOF
		[ "$?" = "0" ] && exit ${EXIT_OK} || exit ${EXIT_ERROR}
		;;

	help)
		;;

	info)
		echo "HOOK_NAME=${HOOK_NAME}"
		echo "HOOK_TYPE=${HOOK_TYPE}"
		;;

	pre-up)
		;;

	post-up)
		boot_mesg "Adding '${desc}' route to zone ${zone}..."
		ip route add ${args} dev ${zone}
		evaluate_retval
		;;
	
	pre-down)
		boot_mesg "Removing '${desc}' route from zone ${zone}..."
		ip route del ${args} dev ${zone}
		evaluate_retval
		;;
	
	post-down)
		;;
	
	discover)

		exit ${EXIT_ERROR}
		;;
	
	*)
		echo "Usage: ${0} [interface] {up|down}"
		exit 1
	;;
esac

# End $NETWORK_DEVICES/services/ipv4-static-route