#!/bin/sh

if [ "$2" == "inet" ]; then

	OLD_ROUTER=`/bin/cat /tmp/${1}_router`
	if [ "${OLD_ROUTER}" != "" ]; then
		echo "Removing states to old router ${OLD_ROUTER}" | logger -t ppp-linkup
		/sbin/pfctl -i $1 -k 0.0.0.0/0 -k ${OLD_ROUTER}/32
		/sbin/pfctl -i $1 -k ${OLD_ROUTER}/32 -k 0.0.0.0/0
	fi

	# let the configuration system know that the ipv4 has changed.
	/bin/echo $4 > /tmp/$1_router
	/bin/echo $3 > /tmp/$1_ip
	/usr/bin/touch /tmp/$1up

	ALLOWOVERRIDE=`/usr/bin/grep -c dnsallowoverride /conf/config.xml`
	if [ $ALLOWOVERRIDE -gt 0 ]; then
		# write nameservers to file
		if [ "`echo $6|grep -c dns1`" -gt 0 ]; then
			DNS1=`echo $6 |awk '{print $2}'`
			echo "$DNS1"> /var/etc/nameserver_$1
			/sbin/route change "$DNS1" $4
		fi
		if [ "`echo $7|grep -c dns2`" -gt 0 ]; then
			DNS2=`echo $7 |awk '{print $2}'`
			echo "$DNS2" >> /var/etc/nameserver_$1
			/sbin/route change "$DNS2" $4
		fi
		/usr/local/sbin/pfSctl -c 'service reload dns'
		/bin/sleep 1
	fi
	/usr/local/sbin/pfSctl -c "interface newip $1"
fi

if [ "$2" == "inet6" ]; then
	# let the configuration system know that the ipv6 has changed.
	/bin/echo $4 |cut -d% -f1 > /tmp/$1_routerv6
	/bin/echo $3 |cut -d% -f1 > /tmp/$1_ipv6
	/usr/bin/touch /tmp/$1upv6

	ALLOWOVERRIDE=`/usr/bin/grep -c dnsallowoverride /conf/config.xml`
	if [ $ALLOWOVERRIDE -gt 0 ]; then
		# write nameservers to file
		if [ "`echo $6|grep -c dns1`" -gt 0 ]; then
			DNS1=`echo $6 |awk '{print $2}'`
			echo "$DNS1"> /var/etc/nameserver_v6$1
			/sbin/route change -inet6 "$DNS1" $4
		fi
		if [ "`echo $7|grep -c dns2`" -gt 0 ]; then
			DNS2=`echo $7 |awk '{print $2}'`
			echo "$DNS2" >> /var/etc/nameserver_v6$1
			/sbin/route change -inet6 "$DNS2" $4
		fi
		/usr/local/sbin/pfSctl -c 'service reload dns'
		/bin/sleep 1
	fi
	/usr/local/sbin/pfSctl -c "interface newipv6 $1"
fi

exit 0
