rewrite of the network scripts and configuration

git-svn-id: svn://svn.openwrt.org/openwrt/branches/buildroot-ng/openwrt@4323 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/iptables/files/firewall.awk

@@ -1,10 +1,7 @@
 # Copyright (C) 2006 OpenWrt.org
 
 BEGIN {
-	print ". /etc/config/network"
-	print "proto=\"$wan_proto\""
-	print "[ -z \"$proto\" -o \"$proto\" = \"none\" ] && exit"
-	print "ifname=\"$wan_ifname\""
+	print "ifname=\"$WAN\""
 	print "[ -z \"$ifname\" ] && exit"
 	print ""
 	print "iptables -X input_$ifname 2>&- >&-"

package/iptables/files/firewall.init

@@ -3,9 +3,12 @@
 
 ## Please make changes in /etc/firewall.user
 
-. /etc/config/network
-WAN="$wan_ifname"
-LAN="$lan_ifname"
+. /etc/functions.sh
+include network
+
+scan_interfaces
+config_get WAN wan ifname
+config_get LAN lan ifname
 
 ## CLEAR TABLES
 for T in filter nat; do
@@ -35,7 +38,7 @@ iptables -t nat -N postrouting_rule
   iptables -A INPUT -j input_rule
 
   # allow
-  [ -z "$WAN" ] || iptables -A INPUT -i \! $WAN	-j ACCEPT	# allow from lan/wifi interfaces 
+  iptables -A INPUT ${WAN:+-i \! $WAN}	-j ACCEPT	# allow from lan/wifi interfaces 
   iptables -A INPUT -p icmp	-j ACCEPT	# allow ICMP
   iptables -A INPUT -p gre	-j ACCEPT	# allow GRE
 

package/iptables/files/firewall.user

@@ -1,11 +1,6 @@
 #!/bin/sh
 # Copyright (C) 2006 OpenWrt.org
 
-. /etc/config/network
-
-WAN="$wan_ifname"
-LAN="$lan_ifname"
-
 iptables -F input_rule
 iptables -F output_rule
 iptables -F forwarding_rule