#!/bin/sh
#------------------------------------------------------------------------------
# /etc/rc.d/rc380.openvpn_dns - set dns-setting for openvpn-tunnels
#
# Creation:     2008-12-19 lanspezi
# Last Update:  $Id$
#------------------------------------------------------------------------------

if [ "${OPT_OPENVPN}${OPT_DNS}" = "yesyes" ]; then
    begin_script OPENVPN "configuring DNS and RDNS for OpenVPN"
    {
        [ 0$OPENVPN_N -eq 0 ] || for n in `seq 1 $OPENVPN_N`; do
            eval route_n='$OPENVPN_'$n'_ROUTE_N'
            [ 0$route_n -eq 0 ] && continue

            eval rvpnip='$OPENVPN_'$n'_REMOTE_VPN_IP'
            eval tdnsip='$OPENVPN_'$n'_DNSIP'
            eval ipv6='$OPENVPN_'$n'_IPV6''$OPT_IPV6'
            if [ "$ipv6" != "yesyes" -a -n "`echo $tdnsip | grep :`" ]
            then
              tdnsip=$rvpnip
            fi
            eval tdomains='$OPENVPN_'$n'_DOMAIN'
            for n2 in `seq 1 $route_n`; do
                eval network='$OPENVPN_'$n'_ROUTE_'$n2
                [ "$network" = "0.0.0.0.0/0" ] && continue 

                eval dnsip='$OPENVPN_'$n'_ROUTE_'$n2'_DNSIP'
                eval domains='$OPENVPN_'$n'_ROUTE_'$n2'_DOMAIN'

                if [ "$ipv6" != "yesyes" -a -n "`echo $dnsip | grep :`" ]
                then
                  dnsip=$rvpnip
                fi

                : ${dnsip:=$tdnsip}
                : ${dnsip:=$rvpnip}
                : ${domains:=$tdomains}

                [ "$dnsip" ] || continue
                [ "$domains" ] || continue

                for dom in $domains; do
                    echo "server=/$dom/$dnsip"
                    echo "rebind-domain-ok=$dom"
                done
                for dnsrev in $(netcalc dnsrev $network)
                do
                    echo "server=/$dnsrev/$dnsip"
                done
            done
        done
    } > /etc/dnsmasq.d/dns_delegate_ovpn.conf
    end_script
fi