PHP-Code:
<?php
/**
* @version $Id: helper.php 16381 2010-04-23 09:28:44Z ian $
* @package Joomla.Framework
* @subpackage Plugin
* @copyright Copyright (C) 2005 - 2010 Open Source Matters. All rights reserved.
* @license GNU/GPL, see LICENSE.php
* Joomla! is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See COPYRIGHT.php for copyright notices and details.
*/
// Check to ensure this file is within the rest of the framework
defined('JPATH_BASE') or die();
/**
* Plugin helper class
*
* @static
* @package Joomla.Framework
* @subpackage Plugin
* @since 1.5
*/
class JPluginHelper
{
/**
* Get the plugin data of a specific type if no specific plugin is specified
* otherwise only the specific plugin data is returned
*
* @access public
* @param string $type The plugin type, relates to the sub-directory in the plugins directory
* @param string $plugin The plugin name
* @return mixed An array of plugin data objects, or a plugin data object
*/
function &getPlugin($type, $plugin = null)
{
$result = array();
$plugins = JPluginHelper::_load();
$total = count($plugins);
for($i = 0; $i < $total; $i++)
{
if(is_null($plugin))
{
if($plugins[$i]->type == $type) {
$result[] = $plugins[$i];
}
}
else
{
if($plugins[$i]->type == $type && $plugins[$i]->name == $plugin) {
$result = $plugins[$i];
break;
}
}
}
return $result;
}
/**
* Checks if a plugin is enabled
*
* @access public
* @param string $type The plugin type, relates to the sub-directory in the plugins directory
* @param string $plugin The plugin name
* @return boolean
*/
function isEnabled( $type, $plugin = null )
{
$result = &JPluginHelper::getPlugin( $type, $plugin);
return (!empty($result));
}
/**
* Loads all the plugin files for a particular type if no specific plugin is specified
* otherwise only the specific pugin is loaded.
*
* @access public
* @param string $type The plugin type, relates to the sub-directory in the plugins directory
* @param string $plugin The plugin name
* @return boolean True if success
*/
function importPlugin($type, $plugin = null, $autocreate = true, $dispatcher = null)
{
$result = false;
$plugins = JPluginHelper::_load();
$total = count($plugins);
for($i = 0; $i < $total; $i++) {
if($plugins[$i]->type == $type && ($plugins[$i]->name == $plugin || $plugin === null)) {
JPluginHelper::_import( $plugins[$i], $autocreate, $dispatcher );
$result = true;
}
}
return $result;
}
/**
* Loads the plugin file
*
* @access private
* @return boolean True if success
*/
function _import( &$plugin, $autocreate = true, $dispatcher = null )
{
static $paths;
static $shutdown_handler_installed;
$mainframe =& JFactory::getApplication();
if (!$paths) {
$paths = array();
}
// Install shutdown handler if not installed yet
if(!$shutdown_handler_installed)
{
register_shutdown_function(array('JPluginHelper', 'shutdown'));
$shutdown_handler_installed = true;
}
$result = false;
$plugin->type = preg_replace('/[^A-Z0-9_\.-]/i', '', $plugin->type);
$plugin->name = preg_replace('/[^A-Z0-9_\.-]/i', '', $plugin->name);
$path = JPATH_PLUGINS.DS.$plugin->type.DS.$plugin->name.'.php';
if (!isset( $paths[$path] ))
{
if (file_exists( $path ))
{
//needed for backwards compatibility
global $_MAMBOTS, $mainframe;
jimport('joomla.plugin.plugin');
$mainframe->set('currentPlugin', $plugin);
require_once( $path );
$paths[$path] = true;
if($autocreate)
{
// Makes sure we have an event dispatcher
if(!is_object($dispatcher)) {
$dispatcher = & JDispatcher::getInstance();
}
$className = 'plg'.$plugin->type.$plugin->name;
if(class_exists($className))
{
// load plugin parameters
$plugin =& JPluginHelper::getPlugin($plugin->type, $plugin->name);
// create the plugin
$instance = new $className($dispatcher, (array)($plugin));
}
}
$mainframe->set('currentPlugin', NULL);
}
}
}
/**
* Loads the published plugins
*
* @access private
*/
function _load()
{
static $plugins;
if (isset($plugins)) {
return $plugins;
}
$db =& JFactory::getDBO();
$user =& JFactory::getUser();
if (isset($user))
{
$aid = $user->get('aid', 0);
$query = 'SELECT folder AS type, element AS name, params'
. ' FROM #__plugins'
. ' WHERE published >= 1'
. ' AND access <= ' . (int) $aid
. ' ORDER BY ordering';
}
else
{
$query = 'SELECT folder AS type, element AS name, params'
. ' FROM #__plugins'
. ' WHERE published >= 1'
. ' ORDER BY ordering';
}
$db->setQuery( $query );
if (!($plugins = $db->loadObjectList())) {
JError::raiseWarning( 'SOME_ERROR_CODE', "Error loading Plugins: " . $db->getErrorMsg());
return false;
}
return $plugins;
}
/**
* Shutdown handler called by PHP when executing plugin produces a fatal error
*
* @access public
*/
static function shutdown()
{
global $mainframe;
$currentPlugin = $mainframe->get('currentPlugin', NULL);
if($currentPlugin)
{
$error = error_get_last();
if($error['type'] == E_ERROR || $error['type'] == E_PARSE || $error['type'] == E_COMPILE_ERROR)
{
$disabled = false;
$cfg =& JFactory::getConfig();
/* If not in debug mode, attempt to disable the plugin */
if(!$cfg->getValue('config.debug'))
{
$db =& JFactory::getDBO();
$q = 'UPDATE #__plugins SET `published`=0 WHERE `folder`=' . $db->quote($currentPlugin->type) .
'AND `element`=' . $db->quote($currentPlugin->name) .
'LIMIT 1';
$db->setQuery($q);
$disabled = $db->query();
/* Following code is based on com_weblinks */
// admin users gid
$gid = 25;
// list of admins
$query = 'SELECT email, name' .
' FROM #__users' .
' WHERE gid = ' . $gid .
' AND sendEmail = 1';
$db->setQuery($query);
if ($db->query())
{
$adminRows = $db->loadObjectList();
$mail =& JFactory::getMailer();
// send email notification to admins
foreach ($adminRows as $adminRow)
{
$mail->addRecipient($adminRow->email, $adminRow->name);
}
$uri = JURI::getInstance();
$mail->setSubject(JText::sprintf('Problem with Joomla site at %s'), $uri->getHost());
$body = JText::sprintf('When trying to access %s, and error was detected with %s plugin %s and it has been disabled. Technical error description follows:', JURI::current(), $currentPlugin->type, $currentPlugin->name);
$body .= "\n";
$body .= "\n" . $error['message'];
$body .= "\n" . $error['file'] . ' : ' . $error['line'];
$mail->setBody($body);
$mail->send();
}
}
if($disabled)
{
$app = JFactory::getApplication();
$app->redirect(JURI::current());
}
else
{
JError::raise(
$error['type'],
500,
JText::sprintf('Error loading %s plugin "%s"', $currentPlugin->type, $currentPlugin->name),
JText::sprintf('%s : %d', $error['file'], $error['line']),
$currentPlugin
);
}
}
}
}
}
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