#!/usr/bin/perl
###############################################################################
#                                                                             #
# IPFire.org - A linux based firewall                                         #
# Copyright (C) 2016  IPFire Team  <alexander.marx@ipfire.org>                #
#                                                                             #
# 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 3 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, see <http://www.gnu.org/licenses/>.       #
#                                                                             #
###############################################################################

use strict;

require '/var/ipfire/general-functions.pl';

my %settings=();
my %clientshash=();
my $settingsfile="${General::swroot}/captive/settings";
my $clients="${General::swroot}/captive/clients";
my $time;
my $expiretime;

if (-f $settingsfile && -f $clients && ! -z $clients){
	&General::readhash("$settingsfile", \%settings) if(-f $settingsfile);
	&General::readhasharray("$clients", \%clientshash);
	$time = time();
	foreach my $key (keys %clientshash) {
		# Skip unlimited access lines
		next if ($clientshash{$key}[3] == 0);

		$expiretime=($clientshash{$key}[2])+$clientshash{$key}[3];
		if ($expiretime < $time){
			delete $clientshash{$key};
			my $exp = gmtime($expiretime);
			&General::log("Captive", "Delete expired voucher $clientshash{$key}[4] expired on $exp. Remark: $clientshash{$key}[5]");
		}
	}
	&General::writehasharray("$clients", \%clientshash);

	# Reload firewall rules
	system("/usr/local/bin/captivectrl");
}