#!/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 tunnelid username password json_get_vars mtu ttl ipaddr peeraddr ip6addr 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" "$mask6" } proto_add_tunnel json_add_string mode sit json_add_int mtu "${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 $max ]; do wget -qO/dev/null "$url" 2>/dev/null && break sleep 1 done } } proto_6in4_teardown() { local cfg="$1" } proto_6in4_init_config() { no_device=1 available=1 proto_config_add_string "ipaddr" proto_config_add_string "ip6addr" proto_config_add_string "peeraddr" proto_config_add_string "tunnelid" proto_config_add_string "username" proto_config_add_string "password" proto_config_add_int "mtu" proto_config_add_int "ttl" } [ -n "$INCLUDE_ONLY" ] || { add_protocol 6in4 }