From 716ca530e1c4515d8683c9d5be3d56b301758b66 Mon Sep 17 00:00:00 2001
From: James <>
Date: Wed, 4 Nov 2015 11:49:21 +0000
Subject: trunk-47381

---
 package/network/ipv6/6in4/files/6in4.sh | 156 ++++++++++++++++++++++++++++++++
 1 file changed, 156 insertions(+)
 create mode 100755 package/network/ipv6/6in4/files/6in4.sh

(limited to 'package/network/ipv6/6in4/files/6in4.sh')

diff --git a/package/network/ipv6/6in4/files/6in4.sh b/package/network/ipv6/6in4/files/6in4.sh
new file mode 100755
index 0000000..59747a3
--- /dev/null
+++ b/package/network/ipv6/6in4/files/6in4.sh
@@ -0,0 +1,156 @@
+#!/bin/sh
+# 6in4.sh - IPv6-in-IPv4 tunnel backend
+# Copyright (c) 2010-2015 OpenWrt.org
+
+[ -n "$INCLUDE_ONLY" ] || {
+	. /lib/functions.sh
+	. /lib/functions/network.sh
+	. ../netifd-proto.sh
+	init_proto "$@"
+}
+
+proto_6in4_update() {
+	sh -c '
+		local timeout=5
+
+		(while [ $((timeout--)) -gt 0 ]; do
+			sleep 1
+			kill -0 $$ || exit 0
+		done; kill -9 $$) 2>/dev/null &
+
+		exec "$@"
+	' "$1" "$@"
+}
+
+proto_6in4_setup() {
+	local cfg="$1"
+	local iface="$2"
+	local link="6in4-$cfg"
+
+	local mtu ttl tos ipaddr peeraddr ip6addr ip6prefix tunlink tunnelid username password updatekey
+	json_get_vars mtu ttl tos ipaddr peeraddr ip6addr ip6prefix tunlink tunnelid username password updatekey
+
+	[ -z "$peeraddr" ] && {
+		proto_notify_error "$cfg" "MISSING_ADDRESS"
+		proto_block_restart "$cfg"
+		return
+	}
+
+	( proto_add_host_dependency "$cfg" "$peeraddr" "$tunlink" )
+
+	[ -z "$ipaddr" ] && {
+		local wanif="$tunlink"
+		if [ -z "$wanif" ] && ! network_find_wan wanif; then
+			proto_notify_error "$cfg" "NO_WAN_LINK"
+			return
+		fi
+
+		if ! network_get_ipaddr ipaddr "$wanif"; then
+			proto_notify_error "$cfg" "NO_WAN_LINK"
+			return
+		fi
+	}
+
+	proto_init_update "$link" 1
+
+	[ -n "$ip6addr" ] && {
+		local local6="${ip6addr%%/*}"
+		local mask6="${ip6addr##*/}"
+		[[ "$local6" = "$mask6" ]] && mask6=
+		proto_add_ipv6_address "$local6" "$mask6"
+		proto_add_ipv6_route "::" 0 "" "" "" "$local6/$mask6"
+	}
+
+	[ -n "$ip6prefix" ] && {
+		proto_add_ipv6_prefix "$ip6prefix"
+		proto_add_ipv6_route "::" 0 "" "" "" "$ip6prefix"
+	}
+
+	proto_add_tunnel
+	json_add_string mode sit
+	json_add_int mtu "${mtu:-1280}"
+	json_add_int ttl "${ttl:-64}"
+	[ -n "$tos" ] && json_add_string tos "$tos"
+	json_add_string local "$ipaddr"
+	json_add_string remote "$peeraddr"
+	[ -n "$tunlink" ] && json_add_string link "$tunlink"
+	proto_close_tunnel
+
+	proto_send_update "$cfg"
+
+	[ -n "$tunnelid" -a -n "$username" -a \( -n "$password" -o -n "$updatekey" \) ] && {
+		[ -n "$updatekey" ] && password="$updatekey"
+
+		local http="http"
+		local urlget="wget"
+		local urlget_opts="-qO-"
+		local ca_path="${SSL_CERT_DIR-/etc/ssl/certs}"
+
+		if [ -n "$(which curl)" ]; then
+			urlget="curl"
+			urlget_opts="-s -S"
+			if curl -V | grep "Protocols:" | grep -qF "https"; then
+				http="https"
+				urlget_opts="$urlget_opts --capath $ca_path"
+			fi
+		fi
+		if [ "$http" = "http" ] &&
+			wget --version 2>&1 | grep -qF "+https"; then
+			urlget="wget"
+			urlget_opts="-qO- --ca-directory=$ca_path"
+			http="https"
+		fi
+		[ "$http" = "https" -a -z "$(find $ca_path -name "*.0" 2>/dev/null)" ] && {
+			if [ "$urlget" = "curl" ]; then
+				urlget_opts="$urlget_opts -k"
+			else
+				urlget_opts="$urlget_opts --no-check-certificate"
+			fi
+		}
+
+		local url="$http://ipv4.tunnelbroker.net/nic/update?username=$username&password=$password&hostname=$tunnelid"
+		local try=0
+		local max=3
+
+		(
+			set -o pipefail
+			while [ $((++try)) -le $max ]; do
+				if proto_6in4_update $urlget $urlget_opts "$url" 2>&1 | \
+					sed -e 's,^Killed$,timeout,' -e "s,^,update $try/$max: ," | \
+					logger -t "$link";
+				then
+					logger -t "$link" "updated"
+					return 0
+				fi
+				sleep 5
+			done
+			logger -t "$link" "update failed"
+		)
+	}
+}
+
+proto_6in4_teardown() {
+	local cfg="$1"
+}
+
+proto_6in4_init_config() {
+	no_device=1
+	available=1
+
+	proto_config_add_string "ipaddr"
+	proto_config_add_string "ip6addr"
+	proto_config_add_string "ip6prefix"
+	proto_config_add_string "peeraddr"
+	proto_config_add_string "tunlink"
+	proto_config_add_string "tunnelid"
+	proto_config_add_string "username"
+	proto_config_add_string "password"
+	proto_config_add_string "updatekey"
+	proto_config_add_int "mtu"
+	proto_config_add_int "ttl"
+	proto_config_add_string "tos"
+}
+
+[ -n "$INCLUDE_ONLY" ] || {
+	add_protocol 6in4
+}
-- 
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