#!/bin/sh
-. /etc/functions.sh
+. /lib/functions.sh
+. /lib/functions/network.sh
if [ "$ACTION" = "add" ] && [ "$INTERFACE" = "wan" ]; then
- local wanip=$(uci -P/var/state get network.wan.ipaddr)
+ local wanip
+ network_get_ipaddr wanip wan || return
iptables -t nat -F nat_reflection_in 2>/dev/null || {
iptables -t nat -N nat_reflection_in
[ "$src" = wan ] && [ "$target" = DNAT ] && {
local dest
config_get dest "$cfg" dest "lan"
+ [ "$dest" != "*" ] || return
local net
for net in $(find_networks "$dest"); do
- local lanip=$(uci -P/var/state get network.$net.ipaddr)
- local lanmk=$(uci -P/var/state get network.$net.netmask)
+ local lannet
+ network_get_subnet lannet "$net" || return
local proto
config_get proto "$cfg" proto
local epmin epmax extport
- config_get extport "$cfg" src_dport
+ config_get extport "$cfg" src_dport "1-65535"
[ -n "$extport" ] || return
epmin="${extport%[-:]*}"; epmax="${extport#*[-:]}"
- [ "$epmin" != "$epmax" ] || epmax=""
+ [ "${epmin#!}" != "$epmax" ] || epmax=""
local ipmin ipmax intport
config_get intport "$cfg" dest_port "$extport"
ipmin="${intport%[-:]*}"; ipmax="${intport#*[-:]}"
- [ "$ipmin" != "$ipmax" ] || ipmax=""
+ [ "${ipmin#!}" != "$ipmax" ] || ipmax=""
local exthost
config_get exthost "$cfg" src_dip "$wanip"
config_get inthost "$cfg" dest_ip
[ -n "$inthost" ] || return
+ [ "$proto" = all ] && proto="tcp udp"
[ "$proto" = tcpudp ] && proto="tcp udp"
[ "${inthost#!}" = "$inthost" ] || return 0
[ "${exthost#!}" = "$exthost" ] || return 0
+ [ "${epmin#!}" != "$epmin" ] && \
+ extport="! --dport ${epmin#!}${epmax:+:$epmax}" || \
+ extport="--dport $epmin${epmax:+:$epmax}"
+
+ [ "${ipmin#!}" != "$ipmin" ] && \
+ intport="! --dport ${ipmin#!}${ipmax:+:$ipmax}" || \
+ intport="--dport $ipmin${ipmax:+:$ipmax}"
+
local p
for p in ${proto:-tcp udp}; do
case "$p" in
- tcp|udp)
+ tcp|udp|6|17)
iptables -t nat -A nat_reflection_in \
- -s $lanip/$lanmk -d $exthost \
- -p $p --dport $epmin${epmax:+:$epmax} \
- -j DNAT --to $inthost:$ipmin${ipmax:+-$ipmax}
+ -s $lannet -d $exthost \
+ -p $p $extport \
+ -j DNAT --to $inthost:${ipmin#!}${ipmax:+-$ipmax}
iptables -t nat -A nat_reflection_out \
- -s $lanip/$lanmk -d $inthost \
- -p $p --dport $ipmin${ipmax:+:$ipmax} \
- -j SNAT --to-source $lanip
+ -s $lannet -d $inthost \
+ -p $p $intport \
+ -j SNAT --to-source ${lannet%%/*}
iptables -t filter -A nat_reflection_fwd \
- -s $lanip/$lanmk -d $inthost \
- -p $p --dport $ipmin${ipmax:+:$ipmax} \
+ -s $lannet -d $inthost \
+ -p $p $intport \
-j ACCEPT
;;
esac