X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/c6d4a05eeb9a303115b012fa048003a6f516070c..80866b730cfe94aba5eed4d3e4b7545aec59b333:/package/firewall/files/reflection.hotplug?ds=sidebyside

diff --git a/package/firewall/files/reflection.hotplug b/package/firewall/files/reflection.hotplug
index 6b1cd60f2..15e350082 100644
--- a/package/firewall/files/reflection.hotplug
+++ b/package/firewall/files/reflection.hotplug
@@ -15,6 +15,11 @@ if [ "$ACTION" = "add" ] && [ "$INTERFACE" = "wan" ]; then
 		iptables -t nat -A postrouting_rule -j nat_reflection_out
 	}
 
+	iptables -t filter -F nat_reflection_fwd 2>/dev/null || {
+		iptables -t filter -N nat_reflection_fwd
+		iptables -t filter -A forwarding_rule -j nat_reflection_fwd
+	}
+
 	find_networks() {
 		find_networks_cb() {
 			local cfg="$1"
@@ -34,16 +39,24 @@ if [ "$ACTION" = "add" ] && [ "$INTERFACE" = "wan" ]; then
 
 		config_foreach find_networks_cb zone "$1"
 	}
-	
+
 	setup_fwd() {
 		local cfg="$1"
 
+		local reflection
+		config_get_bool reflection "$cfg" reflection 1
+		[ "$reflection" == 1 ] || return
+
 		local src
 		config_get src "$cfg" src
 
-		[ "$src" = wan ] && {
+		local target
+		config_get target "$cfg" target DNAT
+
+		[ "$src" = wan ] && [ "$target" = DNAT ] && {
 			local dest
 			config_get dest "$cfg" dest "lan"
+			[ "$dest" != "*" ] || return
 
 			local net
 			for net in $(find_networks "$dest"); do
@@ -53,22 +66,18 @@ if [ "$ACTION" = "add" ] && [ "$INTERFACE" = "wan" ]; then
 				local proto
 				config_get proto "$cfg" proto
 
-				local reflection
-				config_get_bool reflection "$cfg" reflection 1
-				[ "$reflection" == 1 ] || return
-
 				local epmin epmax extport
 				config_get extport "$cfg" src_dport
 				[ -n "$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"
@@ -79,19 +88,35 @@ if [ "$ACTION" = "add" ] && [ "$INTERFACE" = "wan" ]; then
 
 				[ "$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)
 							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}
+								-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} \
+								-p $p $intport \
 								-j SNAT --to-source $lanip
+
+							iptables -t filter -A nat_reflection_fwd \
+								-s $lanip/$lanmk -d $inthost \
+								-p $p $intport \
+								-j ACCEPT
 						;;
 					esac
 				done
@@ -102,4 +127,3 @@ if [ "$ACTION" = "add" ] && [ "$INTERFACE" = "wan" ]; then
 	config_load firewall
 	config_foreach setup_fwd redirect
 fi
-