<?php

/*
+---------------------------------------------------------------------------+
| Openads v2.3                                                              |
| ============                                                              |
|                                                                           |
| Copyright (c) 2003-2007 Openads Limited                                   |
| For contact details, see: http://www.openads.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 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 |
+---------------------------------------------------------------------------+
$Id: Referingpage.delivery.php 8542 2007-07-31 17:02:43Z chris.nutting@openads.org $
*/

/**
 * @package    MaxPlugin
 * @subpackage DeliveryLimitations
 * @author     Chris Nutting <chris@m3.net>
 * @author     Andrzej Swedrzynski <andrzej.swedrzynski@m3.net>
 */

require_once MAX_PATH . '/lib/max/Delivery/limitations.delivery.php';

/**
 * Check to see if this impression contains the valid referrer.
 *
 * @param string $limitation The referrer limitation
 * @param string $op The operator (either '==' or '!=')
 * @param array $aParams An array of additional parameters to be checked
 * @return boolean Whether this impression's referrer passes this limitation's test.
 */
function MAX_checkSite_Referingpage($limitation, $op, $aParams = array())
{
    if ($limitation == '') {
        return true;
    }
    $url = empty($aParams) ? $GLOBALS['referer'] : $aParams['referer'];
    return MAX_limitationsMatchStringValue($url, $limitation, $op);
}

?>
