--- /dev/null
+#!/bin/sh
+
+clear_restricted_gw()
+{
+ local state="$1"
+ local iface
+ local ifname
+ local ipaddr
+ local netmask
+ local gateway
+
+ config_get iface "$state" iface
+
+ if [ "$iface" = "$INTERFACE" ]; then
+ config_get ifname "$state" ifname
+ config_get ipaddr "$state" ipaddr
+ config_get netmask "$state" netmask
+ config_get gateway "$state" gateway
+
+ logger -t firewall.freifunk "removing local restriction to $iface($gateway)"
+ iptables -D "zone_${INTERFACE}_ACCEPT" -i ! $ifname -o $ifname -d $ipaddr/$netmask -j REJECT
+ iptables -D "zone_${INTERFACE}_ACCEPT" -i ! $ifname -o $ifname -d $gateway -j ACCEPT
+
+ uci_revert_state firewall "$state"
+ fi
+}
+
+get_enabled()
+{
+ local name
+ config_get name "$1" name
+
+ if [ "$name" = "$ZONE" ]; then
+ config_get_bool local_restrict "$1" local_restrict
+ fi
+}
+
+if [ "$ACTION" = add ]; then
+ local enabled
+ local ipaddr
+ local netmask
+ local gateway
+
+ include /lib/network
+ scan_interfaces
+
+ config_get ipaddr "$INTERFACE" ipaddr
+ config_get netmask "$INTERFACE" netmask
+ config_get gateway "$INTERFACE" gateway
+
+ if [ -n "$gateway" ] && [ "$gateway" != 0.0.0.0 ]; then
+ config_load firewall
+
+ local_restrict=0
+ config_foreach get_enabled zone
+
+ if [ "$local_restrict" = 1 ]; then
+ logger -t firewall.freifunk "restricting local access to $DEVICE($gateway)"
+ iptables -I "zone_${INTERFACE}_ACCEPT" -i ! $DEVICE -o $DEVICE -d $ipaddr/$netmask -j REJECT
+ iptables -I "zone_${INTERFACE}_ACCEPT" -i ! $DEVICE -o $DEVICE -d $gateway -j ACCEPT
+
+ local state="restricted_gw_${INTERFACE}"
+ uci_set_state firewall "$state" "" restricted_gw_state
+ uci_set_state firewall "$state" iface "$INTERFACE"
+ uci_set_state firewall "$state" ifname "$DEVICE"
+ uci_set_state firewall "$state" ipaddr "$ipaddr"
+ uci_set_state firewall "$state" netmask "$netmask"
+ uci_set_state firewall "$state" gateway "$gateway"
+ fi
+ fi
+
+elif [ "$ACTION" = remove ]; then
+ config_load firewall
+ config_foreach clear_restricted_gw restricted_gw_state
+fi
+