#!/bin/sh
#----------------------------------------------------------------------------
# /etc/ppp/ip-up200.dhcp                                         __FLI4LVER__
#
# called whenever an IPv4 PPP connection over default circuit has come up
# and dnsmasq is not installed
#
# Creation:     ??.??.2003  lanspezi
# Last Update:  $Id$
#----------------------------------------------------------------------------

if [ "$is_default_route" = "yes" -a ! -f /etc/dnsmasq.conf ]
then
    # $interface.usepeerdns existing?
    if [ -f /var/run/$interface.usepeerdns ]
    then
        read usepeerdns < /var/run/$interface.usepeerdns
    else
        usepeerdns='no'
    fi

    if [ "$usepeerdns" = "yes" ]
    then
        # dhcpcd/dhclient set DNS1 and DNS2
        if [ "$DNS1" -o "$DNS2" ]
        then
            resolv_file=/etc/resolv.conf
            if lock_resource $(basename $resolv_file) ip-up200.dhcp
            then
                if [ ! -f $resolv_file.$interface ]
                then
                    mv $resolv_file $resolv_file.$interface
                    echo "# x_USEPEERDNS is set" > $resolv_file
                fi

                for dns in $DNS1 $DNS2
                do
                    echo "nameserver $dns" >> $resolv_file
                    echo "using nameserver $dns"
                done
                unlock_resource $(basename $resolv_file) ip-up200.dhcp
            fi
        else
            echo "The DHCPv4 server didn't send any nameserver addresses, DNS forwarders not changed"
        fi
    else
        echo "Using peer DNS servers disabled for $interface"
    fi
fi