1 files changed, 97 insertions, 0 deletions
diff --git a/package/network/ipv6/6in4/files/6in4.sh b/package/network/ipv6/6in4/files/6in4.sh
new file mode 100755
index 0000000..647a2f8
--- /dev/null
+++ b/package/network/ipv6/6in4/files/6in4.sh
@@ -0,0 +1,97 @@
+#!/bin/sh
+# 6in4.sh - IPv6-in-IPv4 tunnel backend
+# Copyright (c) 2010-2012 OpenWrt.org
+
+[ -n "$INCLUDE_ONLY" ] || {
+	. /lib/functions.sh
+	. /lib/functions/network.sh
+	. ../netifd-proto.sh
+	init_proto "$@"
+}
+
+proto_6in4_setup() {
+	local cfg="$1"
+	local iface="$2"
+	local link="6in4-$cfg"
+
+	local mtu ttl ipaddr peeraddr ip6addr ip6prefix tunnelid username password
+	json_get_vars mtu ttl ipaddr peeraddr ip6addr ip6prefix tunnelid username password
+
+	[ -z "$peeraddr" ] && {
+		proto_notify_error "$cfg" "MISSING_ADDRESS"
+		proto_block_restart "$cfg"
+		return
+	}
+
+	( proto_add_host_dependency "$cfg" 0.0.0.0 )
+
+	[ -z "$ipaddr" ] && {
+		local wanif
+		if ! network_find_wan wanif || ! network_get_ipaddr ipaddr "$wanif"; then
+			proto_notify_error "$cfg" "NO_WAN_LINK"
+			return
+		fi
+	}
+
+	proto_init_update "$link" 1
+	proto_add_ipv6_route "::" 0
+
+	[ -n "$ip6addr" ] && {
+		local local6="${ip6addr%%/*}"
+		local mask6="${ip6addr##*/}"
+		[[ "$local6" = "$mask6" ]] && mask6=
+		proto_add_ipv6_address "$local6" "$mask6"
+	}
+
+	[ -n "$ip6prefix" ] && proto_add_ipv6_prefix "$ip6prefix"
+
+	proto_add_tunnel
+	json_add_string mode sit
+	json_add_int mtu "${mtu:-1280}"
+	json_add_int ttl "${ttl:-64}"
+	json_add_string local "$ipaddr"
+	json_add_string remote "$peeraddr"
+	proto_close_tunnel
+
+	proto_send_update "$cfg"
+
+	[ -n "$tunnelid" -a -n "$username" -a -n "$password" ] && {
+		[ "${#password}" == 32 -a -z "${password//[a-fA-F0-9]/}" ] || {
+			password="$(echo -n "$password" | md5sum)"; password="${password%% *}"
+		}
+
+		local url="http://ipv4.tunnelbroker.net/ipv4_end.php?ip=AUTO&apikey=$username&pass=$password&tid=$tunnelid"
+		local try=0
+		local max=3
+
+		while [ $((++try)) -le $max ]; do
+			( exec wget -qO/dev/null "$url" 2>/dev/null ) &
+			local pid=$!
+			( sleep 5; kill $pid 2>/dev/null ) &
+			wait $pid && break
+		done
+	}
+}
+
+proto_6in4_teardown() {
+	local cfg="$1"
+}
+
+proto_6in4_init_config() {
+	no_device=1             
+	available=1
+
+	proto_config_add_string "ipaddr"
+	proto_config_add_string "ip6addr"
+	proto_config_add_string "ip6prefix"
+	proto_config_add_string "peeraddr"
+	proto_config_add_string "tunnelid"
+	proto_config_add_string "username"
+	proto_config_add_string "password"
+	proto_config_add_int "mtu"
+	proto_config_add_int "ttl"
+}
+
+[ -n "$INCLUDE_ONLY" ] || {
+	add_protocol 6in4
+}