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#!/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
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