File downloader to use under Joomla.

downloadfile.php

<?php
/**
 * File downloader
 * @author Pep Lainez
 * 
 */
defined('_JEXEC') or die('Restricted access');
jimport( 'joomla.filesystem.file' );

/**
 * 
 * @author Pep Lainez
 * @see http://blog.unijimpe.net/forzar-descarga-con-php/
 */
class DownloadFile{
    
	// @todo possible security hole : docPath points to ANY file
	static function getFile($docPath){

		$user = JFactory::getUser();
		if (!$user->guest){
			if (is_file($docPath)){
				$size = filesize($docPath);
				if (function_exists('mime_content_type'))
					$type=mime_content_type($path);
				else {
					if (function_exists("finfo_file")){
						$info = finfo_open(FILEINFO_MIME);
						$type = finfo_file($info, $path);
						finfo_close($info);
					}
				}
				if ($type == '')
					$type = "application/force-download";
					 
				$filename = JFile::getName($docPath);
				header('Content-Type: '.$type);
				header('Content-Disposition: attachment; filename='.$filename);
				header('Content-Transfer-Encoding: binary');
				header('Content-Length: '.$size);
				readfile($path);
			}
			die();		
		}
	}

}