#!/bin/sh # dslite.sh - IPv4-in-IPv6 tunnel backend # Copyright (c) 2013 OpenWrt.org [ -n "$INCLUDE_ONLY" ] || { . /lib/functions.sh . /lib/functions/network.sh . ../netifd-proto.sh init_proto "$@" } proto_dslite_setup() { local cfg="$1" local iface="$2" local link="ds-$cfg" local remoteip6 local mtu ttl peeraddr ip6addr tunlink zone weakif json_get_vars mtu ttl peeraddr ip6addr tunlink zone weakif [ -z "$peeraddr" ] && { proto_notify_error "$cfg" "MISSING_ADDRESS" proto_block_restart "$cfg" return } ( proto_add_host_dependency "$cfg" "::" "$tunlink" ) remoteip6=$(resolveip -6 "$peeraddr") if [ -z "$remoteip6" ]; then sleep 3 remoteip6=$(resolveip -6 "$peeraddr") if [ -z "$remoteip6" ]; then proto_notify_error "$cfg" "AFTR_DNS_FAIL" return fi fi for ip6 in $remoteip6; do peeraddr=$ip6 break done [ -z "$ip6addr" ] && { local wanif="$tunlink" if [ -z "$wanif" ] && ! network_find_wan6 wanif; then proto_notify_error "$cfg" "NO_WAN_LINK" return fi if ! network_get_ipaddr6 ip6addr "$wanif"; then [ -z "$weakif" ] && weakif="lan" if ! network_get_ipaddr6 ip6addr "$weakif"; then proto_notify_error "$cfg" "NO_WAN_LINK" return fi fi } proto_init_update "$link" 1 proto_add_ipv4_route "0.0.0.0" 0 proto_add_ipv4_address "192.0.0.2" "" "" "192.0.0.1" proto_add_tunnel json_add_string mode ipip6 json_add_int mtu "${mtu:-1280}" json_add_int ttl "${ttl:-64}" json_add_string local "$ip6addr" json_add_string remote "$peeraddr" [ -n "$tunlink" ] && json_add_string link "$tunlink" proto_close_tunnel proto_add_data [ -n "$zone" ] && json_add_string zone "$zone" json_add_array firewall json_add_object "" json_add_string type nat json_add_string target ACCEPT json_close_object json_close_array proto_close_data proto_send_update "$cfg" } proto_dslite_teardown() { local cfg="$1" } proto_dslite_init_config() { no_device=1 available=1 proto_config_add_string "ip6addr" proto_config_add_string "peeraddr" proto_config_add_string "tunlink" proto_config_add_int "mtu" proto_config_add_int "ttl" proto_config_add_string "zone" proto_config_add_string "weakif" } [ -n "$INCLUDE_ONLY" ] || { add_protocol dslite }