#!/bin/sh
# version 1.0.1
# see , route, flush
# Source function library.

IPTABLES="/sbin/iptables"
if [ ! -f ${IPTABLES} ]; then
	echo " Install iptables first !"
	exit 1
fi

. /etc/rc.d/init.d/functions
INTERNAL_INTERFACE=eth1
EXTERNAL_INTERFACE=eth0
IPINTERNAL=`/sbin/ifconfig ${INTERNAL_INTERFACE} | grep "inet ad" | sed -e "s/\\ Bcast.*$//; s/.*://" | sed -e "s/ //"`
IPEXTERNAL=`/sbin/ifconfig ${EXTERNAL_INTERFACE} | grep "inet ad" | sed -e "s/\\ Bcast.*$//; s/.*://" | sed -e "s/ //"`
IPBASE_INTERNAL="`echo ${IPINTERNAL} | awk -F. '{print $1"."$2"."$3}'`"
IPBASE_EXTERNAL="`echo ${IPEXTERNAL} | awk -F. '{print $1"."$2"."$3}'`"


case $1 in
	see)
	gprintf " - Filter rules" 
	${IPTABLES} -L -t filter -v -n
	echo
	gprintf " - NAT rules" 
	${IPTABLES} -L -t nat -v -n
	#gprintf "Mangle regles"
	#iptables -L -t mangle -v -n
	# echo
	gprintf " -end-"
	;;
	
	share)
	$0 flush
action "Postrouting ${IPBASE_INTERNAL} " ${IPTABLES} -t nat -A POSTROUTING -o ${INTERNAL_INTERFACE} -j MASQUERADE
action "Postrouting ${IPBASE_EXTERNAL}" ${IPTABLES} -t nat -A POSTROUTING -o ${EXTERNAL_INTERFACE} -j MASQUERADE

	;;
	
	flush)
	action "flushing Rules INPUT" ${IPTABLES} -F INPUT
	action "flushing Rules OUTPUT" ${IPTABLES} -F OUTPUT
	action "flushing Rules FORWARD" ${IPTABLES} -F FORWARD
	action "flushing Rules POSTROUTING" ${IPTABLES} -t nat --flush POSTROUTING
	action "flushing Rules PREROUTING" ${IPTABLES} -t nat --flush PREROUTING
	;;
	
	*)
	gprintf "usage rapidfirewall : {see|share|flush}\n"
	;;
esac