#!/usr/bin/perl -w

#----------------------------------------------------------------------
# copyright (C) 2002 Mitel Networks Corporaton.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
#
# Technical support for this program is available from e-smith, inc.
# For details, please visit our web site at www.e-smith.com or
# call us on 1 888 ESMITH 1 (US/Canada toll free) or +1 613 564 8000
#----------------------------------------------------------------------

package esmith;

use strict;
use Errno;
use esmith::util;
use esmith::ConfigDB;

use constant SIGEVENT => '/sbin/e-smith/signal-event';

my $db = esmith::ConfigDB->open;
my $xl2tpd = $db->get('xl2tpd');
my %ifaces = map { $_ => 1 } split /,/, $xl2tpd->prop('Interfaces') || '';

my $event = $ARGV[0] || die "Event name must be given\n";
my $ipparam = $ARGV[6] || "(none)";
exit 0 unless ($ipparam eq "xl2tpd");
my $interface = $ARGV[1] || die "Couldn't determine interface name\n";

if ($event eq "ip-down")
{
    # Remove this interface.
    if (exists $ifaces{$interface})
    {
	delete $ifaces{$interface};
    }
}
elsif ($event eq "ip-up.xl2tpd")
{
    # Add this interface.
    $ifaces{$interface} = 1;
}
else
{
    die "Don't know what to do for event $event\n";
}

$xl2tpd->set_prop('Interfaces', join ',', keys %ifaces);

exit(0);