Initial commit

package/network/ipv6/6to4/Makefile

@@ -0,0 +1,42 @@
+#
+# Copyright (C) 2010-2012 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=6to4
+PKG_RELEASE:=13
+PKG_LICENSE:=GPL-2.0
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/6to4
+  SECTION:=net
+  CATEGORY:=Network
+  DEPENDS:=@IPV6 +kmod-sit
+  TITLE:=IPv6-to-IPv4 configuration support
+  MAINTAINER:=Jo-Philipp Wich <xm@subsignal.org>
+  PKGARCH:=all
+endef
+
+define Package/6to4/description
+Provides support for 6to4 tunnels in /etc/config/network.
+Refer to https://openwrt.org/docs/guide-user/base-system/basic-networking
+configuration details.
+endef
+
+define Build/Compile
+endef
+
+define Build/Configure
+endef
+
+define Package/6to4/install
+	$(INSTALL_DIR) $(1)/lib/netifd/proto
+	$(INSTALL_BIN) ./files/6to4.sh $(1)/lib/netifd/proto/6to4.sh
+endef
+
+$(eval $(call BuildPackage,6to4))

package/network/ipv6/6to4/files/6to4.sh

@@ -0,0 +1,98 @@
+#!/bin/sh
+# 6to4.sh - IPv6-in-IPv4 tunnel backend
+# Copyright (c) 2010-2012 OpenWrt.org
+
+[ -n "$INCLUDE_ONLY" ] || {
+	. /lib/functions.sh
+	. /lib/functions/network.sh
+	. ../netifd-proto.sh
+	init_proto "$@"
+}
+
+find_6to4_prefix() {
+	local ip4="$1"
+	local oIFS="$IFS"; IFS="."; set -- $ip4; IFS="$oIFS"
+
+	printf "2002:%02x%02x:%02x%02x\n" $1 $2 $3 $4
+}
+
+test_6to4_rfc1918()
+{
+	local oIFS="$IFS"; IFS="."; set -- $1; IFS="$oIFS"
+	[ $1 -eq  10 ] && return 0
+	[ $1 -eq 192 ] && [ $2 -eq 168 ] && return 0
+	[ $1 -eq 172 ] && [ $2 -ge  16 ] && [ $2 -le  31 ] && return 0
+
+	# RFC 6598
+	[ $1 -eq 100 ] && [ $2 -ge  64 ] && [ $2 -le 127 ] && return 0
+
+	return 1
+}
+
+proto_6to4_setup() {
+	local cfg="$1"
+	local iface="$2"
+	local link="6to4-$cfg"
+
+	local mtu ttl tos ipaddr
+	json_get_vars mtu ttl tos ipaddr
+
+	( proto_add_host_dependency "$cfg" 0.0.0.0 )
+
+	local wanif
+	if ! network_find_wan wanif; then
+		proto_notify_error "$cfg" "NO_WAN_LINK"
+		return
+	fi
+
+	[ -z "$ipaddr" ] && {
+		if ! network_get_ipaddr ipaddr "$wanif"; then
+			proto_notify_error "$cfg" "NO_WAN_ADDRESS"
+			return
+		fi
+	}
+
+	test_6to4_rfc1918 "$ipaddr" && {
+		proto_notify_error "$cfg" "INVALID_LOCAL_ADDRESS"
+		return
+	}
+
+	# find our local prefix
+	local prefix6=$(find_6to4_prefix "$ipaddr")
+	local local6="$prefix6::1"
+
+	proto_init_update "$link" 1
+	proto_add_ipv6_address "$local6" 16
+	proto_add_ipv6_prefix "$prefix6::/48"
+
+	proto_add_ipv6_route "::" 0 "::192.88.99.1" "" "" "$local6/16"
+	proto_add_ipv6_route "::" 0 "::192.88.99.1" "" "" "$prefix6::/48"
+
+	proto_add_tunnel
+	json_add_string mode sit
+	json_add_int mtu "${mtu:-1280}"
+	json_add_int ttl "${ttl:-64}"
+	[ -n "$tos" ] && json_add_string tos "$tos"
+	json_add_string local "$ipaddr"
+	proto_close_tunnel
+
+	proto_send_update "$cfg"
+}
+
+proto_6to4_teardown() {
+	local cfg="$1"
+}
+
+proto_6to4_init_config() {
+	no_device=1
+	available=1
+
+	proto_config_add_string "ipaddr"
+	proto_config_add_int "mtu"
+	proto_config_add_int "ttl"
+	proto_config_add_string "tos"
+}
+
+[ -n "$INCLUDE_ONLY" ] || {
+	add_protocol 6to4
+}