#!/bin/sh
#----------------------------------------------------------------------------
# /etc/ppp/ip-up.portfw - setup portfw
#
# Creation:     24.11.2002  fm
# Last Update:  14.12.2003  fm
#
# Copyright (c) 2002-2003 Frank Meyer <frank@eisfair.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#----------------------------------------------------------------------------

kernel_version=`uname -r`

ip=$local

. /etc/config.d/routing

case "$kernel_version"
in
    2.2.*)
	if [ "$PORTFW_N" -gt 0 ]
	then
	    idx=1
	    while [ "$idx" -le "$PORTFW_N" ]
	    do
		eval portfw_rule='$PORTFW_'$idx

		set -- $portfw_rule
		ports=$1
		hidden=$2
		proto=$3

		if echo "$ports" | grep "-" > /dev/null 2> /dev/null  # is there a port-range?
		then
		    low=`echo "$ports" | cut -d "-" -f 1`
		    high=`echo "$ports" | cut -d "-" -f 2`
		    /usr/sbin/ipmasqadm autofw -A -v -r $proto $low $high -h $hidden
		else
		    rport=`echo "$hidden" | cut -d ":" -f 2`
		    hidden=`echo "$hidden" | cut -d ":" -f 1`
		    if [ "$rport" = "$hidden" ] # no port specifed after hiddenhost?
		    then
			rport="$ports"
		    fi
		    /usr/sbin/ipmasqadm portfw -a -P $proto -L $ip $ports -R $hidden $rport
		fi

		idx=`/usr/bin/expr $idx + 1`
	    done
	fi
	;;
    *)
	is_default_route=yes

	if [ -f /etc/portfw.conf ]  # is portfw configured?
	then
	    echo "initializing port forwarding..."
	    
	    if [ "$is_default_route" = "yes" ]  # is a default-route-interface going up
	    then
		/usr/local/bin/setup-portfw.sh doit "default" "$local"
	    fi

	    /usr/local/bin/setup-portfw.sh doit "$interface" "$local"
	    
	    echo 'port forwarding: done'
	fi
	;;
esac