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<?php
/**
* @package Joomla.Site
* @subpackage com_mailto
* @copyright Copyright (C) 2005 - 2014 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
defined('_JEXEC') or die;
/**
* @package Joomla.Site
* @subpackage com_mailto
*/
abstract class MailtoHelper
{
/**
* Adds a URL to the mailto system and returns the hash
*
* @param string url
* @return URL hash
*/
public static function addLink($url)
{
$hash = sha1($url);
self::cleanHashes();
$session = JFactory::getSession();
$mailto_links = $session->get('com_mailto.links', array());
if(!isset($mailto_links[$hash]))
{
$mailto_links[$hash] = new stdClass();
}
$mailto_links[$hash]->link = $url;
$mailto_links[$hash]->expiry = time();
$session->set('com_mailto.links', $mailto_links);
return $hash;
}
/**
* Checks if a URL is a Flash file
*
* @param string
* @return URL
*/
public static function validateHash($hash)
{
$retval = false;
$session = JFactory::getSession();
self::cleanHashes();
$mailto_links = $session->get('com_mailto.links', array());
if(isset($mailto_links[$hash]))
{
$retval = $mailto_links[$hash]->link;
}
return $retval;
}
/**
* Cleans out old hashes
*
* @since 1.6.1
*/
public static function cleanHashes($lifetime = 1440)
{
// flag for if we've cleaned on this cycle
static $cleaned = false;
if(!$cleaned)
{
$past = time() - $lifetime;
$session = JFactory::getSession();
$mailto_links = $session->get('com_mailto.links', array());
foreach($mailto_links as $index=>$link)
{
if($link->expiry < $past)
{
unset($mailto_links[$index]);
}
}
$session->set('com_mailto.links', $mailto_links);
$cleaned = true;
}
}
}