6in4: add netifd support

[openwrt/openwrt.git] / package / 6in4 / files / 6in4.sh

diff --git a/package/6in4/files/6in4.sh b/package/6in4/files/6in4.sh
index 5f8dfffe5785913db4b0308c2fd44d8f2b35cbb4..14748ebd10137a11614cb8c3e3673502b17ee984 100755 (executable)
--- a/package/6in4/files/6in4.sh
+++ b/package/6in4/files/6in4.sh
@@ -1,6 +1,13 @@
+#!/bin/sh
 # 6in4.sh - IPv6-in-IPv4 tunnel backend
 # Copyright (c) 2010 OpenWrt.org
 
+[ -n "$INCLUDE_ONLY" ] || {
+       . /etc/functions.sh
+       . ../netifd-proto.sh
+       init_proto "$@"
+}
+
 find_6in4_wanif() {
        local if=$(ip -4 r l e 0.0.0.0/0); if="${if#default* dev }"; if="${if%% *}"
        [ -n "$if" ] && grep -qs "^ *$if:" /proc/net/dev && echo "$if"
@@ -23,82 +30,109 @@ coldplug_interface_6in4() {
        setup_interface_6in4 "6in4-$1" "$1"
 }
 
-setup_interface_6in4() {
-       local iface="$1"
-       local cfg="$2"
-       local link="6in4-$cfg"
 
-       local local4=$(uci_get network "$cfg" ipaddr)
+tun_error() {
+       local cfg="$1"; shift;
 
-       local remote4
-       config_get remote4 "$cfg" peeraddr
+       [ -n "$1" ] && proto_notify_error "$cfg" "$@"
+       proto_block_restart "$cfg"
+}
 
-       local local6
-       config_get local6 "$cfg" ip6addr
+proto_6in4_setup() {
+       local cfg="$1"
+       local iface="$2"
+       local link="6in4-$cfg"
 
-       local mtu
-       config_get mtu "$cfg" mtu
+       json_get_var mtu mtu
+       json_get_var ttl ttl
+       json_get_var local4 ipaddr
+       json_get_var remote4 peeraddr
+       json_get_var ip6addr ip6addr
+       json_get_var tunnelid tunnelid
+       json_get_var username username
+       json_get_var password password
+
+       [ -z "$ip6addr" -o -z "$remote4" ] && {
+               tun_error "$cfg" "MISSING_ADDRESS"
+               return
+       }
 
-       local ttl
-       config_get ttl "$cfg" ttl
+       [ -z "$local4" ] && {
+               local wanif=$(find_6in4_wanif)
+               [ -z "$wanif" ] && {
+                       tun_error "$cfg" "NO_WAN_LINK"
+                       return
+               }
 
-       local metric
-       config_get metric "$cfg" metric
+               . /lib/network/config.sh
+               local wancfg="$(find_config "$wanif")"
+               [ -z "$wancfg" ] && {
+                       tun_error "$cfg" "NO_WAN_LINK"
+                       return
+               }
 
-       local defaultroute
-       config_get_bool defaultroute "$cfg" defaultroute 1
+               # If local4 is unset, guess local IPv4 address from the
+               # interface used by the default route.
+               [ -n "$wanif" ] && local4=$(find_6in4_wanip "$wanif")
 
-       # 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 "$wanif"
+               [ -z "$local4" ] && {
+                       tun_error "$cfg" "NO_WAN_LINK"
+                       return
                }
        }
 
-       [ -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 "${ttl:-64}"
+       json_add_string local "$local4"
+       json_add_string remote "$remote4"
+       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 ${metric:+metric $metric} 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
 }