From e8be3016c98c2e7d81755c4eae34ea3c60f4b3f9 Mon Sep 17 00:00:00 2001
From: jow <jow@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Sat, 1 May 2010 18:22:01 +0000
Subject: [package] firewall: 	- replace uci firewall with a modular dual
 stack implementation	developed by Malte S. Stretz 	- bump version to 2

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@21286 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 package/firewall/files/lib/core_redirect.sh | 61 +++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 package/firewall/files/lib/core_redirect.sh

(limited to 'package/firewall/files/lib/core_redirect.sh')

diff --git a/package/firewall/files/lib/core_redirect.sh b/package/firewall/files/lib/core_redirect.sh
new file mode 100644
index 000000000..0f0ccffe0
--- /dev/null
+++ b/package/firewall/files/lib/core_redirect.sh
@@ -0,0 +1,61 @@
+# Copyright (C) 2009-2010 OpenWrt.org
+
+fw_config_get_redirect() {
+	[ "${redirect_NAME}" != "$1" ] || return
+	fw_config_get_section "$1" redirect { \
+		string _name "$1" \
+		string name "" \
+		string src "" \
+		ipaddr src_ip "" \
+		ipaddr src_dip "" \
+		string src_mac "" \
+		string src_port "" \
+		string src_dport "" \
+		string dest "" \
+		ipaddr dest_ip "" \
+		string dest_mac "" \
+		string dest_port "" \
+		string proto "tcpudp" \
+	} || return
+	[ -n "$redirect_name" ] || redirect_name=$redirect__name
+}
+
+fw_load_redirect() {
+	fw_config_get_redirect "$1"
+
+	fw_callback pre redirect
+
+	[ -n "$redirect_src" -a -n "$redirect_dest_ip" ] || {
+		fw_die "redirect ${redirect_name}: needs src and dest_ip"
+	}
+
+	local nat_dest_port=$redirect_dest_port
+	redirect_dest_port=$(fw_get_port_range $redirect_dest_port)
+	redirect_src_port=$(fw_get_port_range $redirect_src_port)
+	redirect_src_dport=$(fw_get_port_range $redirect_src_dport)
+	local fwd_dest_port=${redirect_dest_port:-$redirect_src_dport}
+
+	[ "$redirect_proto" == "tcpudp" ] && redirect_proto="tcp udp"
+	for redirect_proto in $redirect_proto; do
+		fw add I n zone_${redirect_src}_prerouting DNAT $ { $redirect_src_ip $redirect_dest_ip } { \
+			${redirect_proto:+-p $redirect_proto} \
+			${redirect_src_ip:+-s $redirect_src_ip} \
+			${redirect_src_dip:+-d $redirect_src_dip} \
+			${redirect_src_port:+--sport $redirect_src_port} \
+			${redirect_src_dport:+--dport $redirect_src_dport} \
+			${redirect_src_mac:+-m mac --mac-source $redirect_src_mac} \
+			--to-destination ${redirect_dest_ip}${redirect_dest_port:+:$nat_dest_port} \
+		}
+
+		fw add I f zone_${redirect_src}_forward ACCEPT ^ { $redirect_src_ip $redirect_dest_ip } { \
+			-d $redirect_dest_ip \
+			${redirect_proto:+-p $redirect_proto} \
+			${redirect_src_ip:+-s $redirect_src_ip} \
+			${redirect_src_port:+--sport $redirect_src_port} \
+			${fwd_dest_port:+--dport $fwd_dest_port} \
+			${redirect_src_mac:+-m mac --mac-source $redirect_src_mac} \
+		}
+	done
+
+	fw_callback post redirect
+}
-- 
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