logout.php
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<?php
/**
* @package Joomla.Plugin
* @subpackage System.logout
*
* @copyright Copyright (C) 2005 - 2019 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
defined('_JEXEC') or die;
/**
* Plugin class for logout redirect handling.
*
* @since 1.6
*/
class PlgSystemLogout extends JPlugin
{
/**
* Application object.
*
* @var JApplicationCms
* @since 3.7.3
*/
protected $app;
/**
* Load the language file on instantiation.
*
* @var boolean
* @since 3.1
*/
protected $autoloadLanguage = true;
/**
* Constructor.
*
* @param object &$subject The object to observe -- event dispatcher.
* @param object $config An optional associative array of configuration settings.
*
* @since 1.6
*/
public function __construct(&$subject, $config)
{
parent::__construct($subject, $config);
// If we are on admin don't process.
if (!$this->app->isClient('site'))
{
return;
}
$hash = JApplicationHelper::getHash('PlgSystemLogout');
if ($this->app->input->cookie->getString($hash))
{
// Destroy the cookie.
$this->app->input->cookie->set($hash, '', 1, $this->app->get('cookie_path', '/'), $this->app->get('cookie_domain', ''));
// Set the error handler for E_ALL to be the class handleError method.
JError::setErrorHandling(E_ALL, 'callback', array('PlgSystemLogout', 'handleError'));
}
}
/**
* Method to handle any logout logic and report back to the subject.
*
* @param array $user Holds the user data.
* @param array $options Array holding options (client, ...).
*
* @return boolean Always returns true.
*
* @since 1.6
*/
public function onUserLogout($user, $options = array())
{
if ($this->app->isClient('site'))
{
// Create the cookie.
$this->app->input->cookie->set(
JApplicationHelper::getHash('PlgSystemLogout'),
true,
time() + 86400,
$this->app->get('cookie_path', '/'),
$this->app->get('cookie_domain', ''),
$this->app->isHttpsForced(),
true
);
}
return true;
}
/**
* Method to handle an error condition.
*
* @param Exception &$error The Exception object to be handled.
*
* @return void
*
* @since 1.6
*/
public static function handleError(&$error)
{
// Get the application object.
$app = JFactory::getApplication();
// Make sure the error is a 403 and we are in the frontend.
if ($error->getCode() == 403 && $app->isClient('site'))
{
// Redirect to the home page.
$app->enqueueMessage(JText::_('PLG_SYSTEM_LOGOUT_REDIRECT'));
$app->redirect('index.php');
}
else
{
// Render the custom error page.
JError::customErrorPage($error);
}
}
}