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@ -1,23 +1,14 @@ |
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#!/bin/sh |
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# 6in4.sh - IPv6-in-IPv4 tunnel backend |
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# Copyright (c) 2010 OpenWrt.org |
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# Copyright (c) 2010-2012 OpenWrt.org |
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[ -n "$INCLUDE_ONLY" ] || { |
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. /lib/functions.sh |
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. /lib/functions/network.sh |
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. ../netifd-proto.sh |
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init_proto "$@" |
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} |
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find_6in4_wanif() { |
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local if=$(ip -4 r l e 0.0.0.0/0); if="${if#default* dev }"; if="${if%% *}" |
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[ -n "$if" ] && grep -qs "^ *$if:" /proc/net/dev && echo "$if" |
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} |
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find_6in4_wanip() { |
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local ip=$(ip -4 a s dev "$1"); ip="${ip#*inet }" |
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echo "${ip%%[^0-9.]*}" |
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} |
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tun_error() { |
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local cfg="$1"; shift; |
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@ -30,42 +21,20 @@ proto_6in4_setup() { |
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local iface="$2" |
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local link="6in4-$cfg" |
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json_get_var mtu mtu |
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json_get_var ttl ttl |
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json_get_var local4 ipaddr |
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json_get_var remote4 peeraddr |
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json_get_var ip6addr ip6addr |
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json_get_var tunnelid tunnelid |
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json_get_var username username |
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json_get_var password password |
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local mtu ttl local4 peeraddr ip6addr tunnelid username password |
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json_get_vars mtu ttl local4 peeraddr ip6addr tunnelid username password |
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[ -z "$ip6addr" -o -z "$remote4" ] && { |
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[ -z "$ip6addr" -o -z "$peeraddr" ] && { |
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tun_error "$cfg" "MISSING_ADDRESS" |
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return |
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} |
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[ -z "$local4" ] && { |
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local wanif=$(find_6in4_wanif) |
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[ -z "$wanif" ] && { |
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tun_error "$cfg" "NO_WAN_LINK" |
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return |
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} |
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. /lib/network/config.sh |
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local wancfg="$(find_config "$wanif")" |
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[ -z "$wancfg" ] && { |
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local wanif |
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if ! network_find_wan wanif || ! network_get_ipaddr local4 "$wanif"; then |
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tun_error "$cfg" "NO_WAN_LINK" |
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return |
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} |
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# If local4 is unset, guess local IPv4 address from the |
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# interface used by the default route. |
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[ -n "$wanif" ] && local4=$(find_6in4_wanip "$wanif") |
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[ -z "$local4" ] && { |
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tun_error "$cfg" "NO_WAN_LINK" |
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return |
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} |
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fi |
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} |
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local local6="${ip6addr%%/*}" |
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@ -81,7 +50,7 @@ proto_6in4_setup() { |
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json_add_int mtu "${mtu:-1280}" |
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json_add_int ttl "${ttl:-64}" |
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json_add_string local "$local4" |
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json_add_string remote "$remote4" |
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json_add_string remote "$peeraddr" |
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proto_close_tunnel |
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proto_send_update "$cfg" |
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