openwrt/package/firewall/files/bin/fw

#!/bin/sh
FW_LIBDIR=/lib/firewall

. /etc/functions.sh
. ${FW_LIBDIR}/fw.sh

case "$(type fw)" in
	*function) ;;
	*) exit 255;;
esac

usage() {
	echo $0 "<command>" "<family>" "<table>" "<chain>" "<target>" "{" "<rules>" "}"
	exit 0
}

cmd=$1
shift
case "$cmd" in
	--help|help) usage ;;
	start|stop|reload|restart)
		. ${FW_LIBDIR}/core.sh
		fw_$cmd
		exit $?
	;;
esac

fam=$1
shift
case "$fam" in
	ip)
		fam=i
		if [ $# -gt 2 ]; then
			for p in $(seq 2 $(($# - 1))); do
				if eval "[ \$$p == '}' ]"; then
					fam=I
					break
				fi
			done
		fi ;;
	ip4) fam=4 ;;
	ip6) fam=6 ;;
	arp) fam=a ;;
	eth) fam=e ;;
	-*) exec $0 $cmd ${fam##*-} "$@" ;;
esac

fw "$cmd" "$fam" "$@"
exit $?