+#!/bin/sh
# 6in4.sh - IPv6-in-IPv4 tunnel backend
-# Copyright (c) 2010 OpenWrt.org
+# Copyright (c) 2010-2012 OpenWrt.org
-find_6in4_wanif() {
- local if=$(ip -4 r l e 0/0); if="${if#default* dev }"; if="${if%% *}"
- [ -n "$if" ] && grep -qs "^ *$if:" /proc/net/dev && echo "$if"
+[ -n "$INCLUDE_ONLY" ] || {
+ . /lib/functions.sh
+ . /lib/functions/network.sh
+ . ../netifd-proto.sh
+ init_proto "$@"
}
-find_6in4_wanip() {
- local ip=$(ip -4 a s dev "$1"); ip="${ip#*inet }"
- echo "${ip%%[^0-9.]*}"
-}
-
-# Hook into scan_interfaces() to synthesize a .device option
-# This is needed for /sbin/ifup to properly dispatch control
-# to setup_interface_6in4() even if no .ifname is set in
-# the configuration.
-scan_6in4() {
- config_set "$1" device "6in4-$1"
-}
-
-coldplug_interface_6in4() {
- setup_interface_6in4 "6in4-$1" "$1"
-}
-
-setup_interface_6in4() {
- local iface="$1"
- local cfg="$2"
+proto_6in4_setup() {
+ local cfg="$1"
+ local iface="$2"
local link="6in4-$cfg"
- local local4=$(uci_get network "$cfg" ipaddr)
-
- local remote4
- config_get remote4 "$cfg" peeraddr
-
- local local6
- config_get local6 "$cfg" ip6addr
+ local mtu ttl ipaddr peeraddr ip6addr tunnelid username password
+ json_get_vars mtu ttl ipaddr peeraddr ip6addr tunnelid username password
- local mtu
- config_get mtu "$cfg" mtu
-
- local ttl
- config_get ttl "$cfg" ttl
+ [ -z "$ip6addr" -o -z "$peeraddr" ] && {
+ proto_notify_error "$cfg" "MISSING_ADDRESS"
+ proto_block_restart "$cfg"
+ return
+ }
- local defaultroute
- config_get_bool defaultroute "$cfg" defaultroute 1
+ ( proto_add_host_dependency "$cfg" 0.0.0.0 )
- # If local4 is unset, guess local IPv4 address from the
- # interface used by the default route.
- [ -z "$local4" ] && {
- local wanif=$(find_6in4_wanif)
- [ -n "$wanif" ] && {
- local4=$(find_6in4_wanip "$wanif")
- uci_set_state network "$cfg" wan_device "$wanif"
- }
+ [ -z "$ipaddr" ] && {
+ local wanif
+ if ! network_find_wan wanif || ! network_get_ipaddr ipaddr "$wanif"; then
+ proto_notify_error "$cfg" "NO_WAN_LINK"
+ return
+ fi
}
- [ -n "$local4" ] && {
- # creating the tunnel below will trigger a net subsystem event
- # prevent it from touching or iface by disabling .auto here
- uci_set_state network "$cfg" ifname $link
- uci_set_state network "$cfg" auto 0
+ local local6="${ip6addr%%/*}"
+ local mask6="${ip6addr##*/}"
+ [[ "$local6" = "$mask6" ]] && mask6=
+
+ proto_init_update "$link" 1
+ proto_add_ipv6_address "$local6" "$mask6"
+ proto_add_ipv6_route "::" 0
- ip tunnel add $link mode sit remote $remote4 local $local4 ttl ${ttl:-64}
- ip link set $link up
- ip link set mtu ${mtu:-1280} dev $link
- ip addr add $local6 dev $link
+ proto_add_tunnel
+ json_add_string mode sit
+ json_add_int mtu "${mtu:-1280}"
+ json_add_int ttl "${ttl:-64}"
+ json_add_string local "$ipaddr"
+ json_add_string remote "$peeraddr"
+ proto_close_tunnel
- uci_set_state network "$cfg" ipaddr $local4
- uci_set_state network "$cfg" ip6addr $local6
+ proto_send_update "$cfg"
- [ "$defaultroute" = 1 ] && {
- ip -6 route add ::/0 dev $link
- uci_set_state network "$cfg" defaultroute 1
+ [ -n "$tunnelid" -a -n "$username" -a -n "$password" ] && {
+ [ "${#password}" == 32 -a -z "${password//[a-fA-F0-9]/}" ] || {
+ password="$(echo -n "$password" | md5sum)"; password="${password%% *}"
}
- env -i ACTION="ifup" INTERFACE="$cfg" DEVICE="$link" PROTO=6in4 /sbin/hotplug-call "iface" &
- } || {
- echo "Cannot determine local IPv4 address for 6in4 tunnel $cfg - skipping"
+ local url="http://ipv4.tunnelbroker.net/ipv4_end.php?ip=AUTO&apikey=$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
}
}
-stop_interface_6in4() {
+proto_6in4_teardown() {
local cfg="$1"
- local link="6in4-$cfg"
-
- local local6=$(uci_get_state network "$cfg" ip6addr)
- local defaultroute=$(uci_get_state network "$cfg" defaultroute)
-
- grep -qs "^ *$link:" /proc/net/dev && {
- env -i ACTION="ifdown" INTERFACE="$cfg" DEVICE="$link" PROTO=6in4 /sbin/hotplug-call "iface" &
+}
- [ "$defaultroute" = "1" ] && {
- ip -6 route del ::/0 dev $link
- }
+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"
+}
- ip addr del $local6 dev $link
- ip link set $link down
- ip tunnel del $link
- }
+[ -n "$INCLUDE_ONLY" ] || {
+ add_protocol 6in4
}
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