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<?php
/**
* @package JCE
* @copyright Copyright (c) 2009-2016 Ryan Demmer. All rights reserved.
* @license GNU/GPL 2 or later - http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* JCE 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.
*/
defined('_JEXEC') or die('RESTRICTED');
// Load class dependencies
require_once(WF_EDITOR_LIBRARIES . '/classes/plugin.php');
class WFPreviewPlugin extends WFEditorPlugin {
/**
* Constructor activating the default information of the class
*
* @access protected
*/
function __construct() {
parent::__construct();
$request = WFRequest::getInstance();
// Setup plugin XHR callback functions
$request->setRequest(array($this, 'showPreview'));
$this->execute();
}
/**
* Display Preview content
* @return void
*/
public function showPreview() {
$db = JFactory::getDBO();
$user = JFactory::getUser();
$dispatcher = JDispatcher::getInstance();
$language = JFactory::getLanguage();
// reset document type
$document = &JFactory::getDocument();
$document->setType('html');
// required by module loadposition
jimport('joomla.application.module.helper');
// load paramter class
jimport('joomla.html.parameter');
wfimport('admin.helpers.extension');
// Get variables
$component_id = JRequest::getInt('component_id');
// get post data
$data = JRequest::getVar('data', '', 'POST', 'STRING', JREQUEST_ALLOWRAW);
// cleanup data
$data = preg_replace(array('#<!DOCTYPE([^>]+)>#i', '#<(head|title|meta)([^>]*)>([\w\W]+)<\/1>#i', '#<\/?(html|body)([^>]*)>#i'), '', rawurldecode($data));
$component = WFExtensionHelper::getComponent($component_id);
// create params registry object
$params = new JRegistry();
// create empty params string
if (!isset($component->params)) {
$component->params = '';
}
// process attribs (com_content etc.)
if ($component->attribs) {
$params->loadString($component->attribs);
} else {
if (class_exists('JParameter')) {
$params = new JParameter($component->params);
} else {
$params->loadString($component->params);
}
}
$article = JTable::getInstance('content');
$article->id = 0;
$article->created_by = $user->get('id');
$article->parameters = new JRegistry();
$article->text = $data;
// allow this to be skipped as some plugins can cause FATAL errors.
if ((bool) $this->getParam('process_content', 1)) {
$limitstart = 0;
JPluginHelper::importPlugin('content');
require_once(JPATH_SITE . '/components/com_content/helpers/route.php');
// set error reporting off to return empty string on error
error_reporting(0);
$dispatcher->trigger('onPrepareContent', array(& $article, & $params, $limitstart));
}
$this->processURLS($article);
return $article->text;
}
/**
* Convert URLs
* @param object $article Article object
* @return void
*/
private function processURLS(&$article) {
$base = JURI::root(true) . '/';
$buffer = $article->text;
$protocols = '[a-zA-Z0-9]+:'; //To check for all unknown protocals (a protocol must contain at least one alpahnumeric fillowed by :
$regex = '#(src|href|poster)="(?!/|' . $protocols . '|\#|\')([^"]*)"#m';
$buffer = preg_replace($regex, "$1=\"$base\$2\"", $buffer);
$regex = '#(onclick="window.open\(\')(?!/|' . $protocols . '|\#)([^/]+[^\']*?\')#m';
$buffer = preg_replace($regex, '$1' . $base . '$2', $buffer);
// ONMOUSEOVER / ONMOUSEOUT
$regex = '#(onmouseover|onmouseout)="this.src=([\']+)(?!/|' . $protocols . '|\#|\')([^"]+)"#m';
$buffer = preg_replace($regex, '$1="this.src=$2' . $base . '$3$4"', $buffer);
// Background image
$regex = '#style\s*=\s*[\'\"](.*):\s*url\s*\([\'\"]?(?!/|' . $protocols . '|\#)([^\)\'\"]+)[\'\"]?\)#m';
$buffer = preg_replace($regex, 'style="$1: url(\'' . $base . '$2$3\')', $buffer);
// OBJECT <param name="xx", value="yy"> -- fix it only inside the <param> tag
$regex = '#(<param\s+)name\s*=\s*"(movie|src|url)"[^>]\s*value\s*=\s*"(?!/|' . $protocols . '|\#|\')([^"]*)"#m';
$buffer = preg_replace($regex, '$1name="$2" value="' . $base . '$3"', $buffer);
// OBJECT <param value="xx", name="yy"> -- fix it only inside the <param> tag
$regex = '#(<param\s+[^>]*)value\s*=\s*"(?!/|' . $protocols . '|\#|\')([^"]*)"\s*name\s*=\s*"(movie|src|url)"#m';
$buffer = preg_replace($regex, '<param value="' . $base . '$2" name="$3"', $buffer);
// OBJECT data="xx" attribute -- fix it only in the object tag
$regex = '#(<object\s+[^>]*)data\s*=\s*"(?!/|' . $protocols . '|\#|\')([^"]*)"#m';
$buffer = preg_replace($regex, '$1data="' . $base . '$2"$3', $buffer);
$article->text = $buffer;
}
}