<?php
/**
* @version $Id: kunena.file.upload.php 2059 2010-03-14 03:42:18Z mahagr $
* Kunena Component
* @package Kunena
*
* @Copyright (C) 2008 - 2009 Kunena Team All rights reserved
* @license http://www.gnu.org/copyleft/gpl.html GNU/GPL
* @link http://www.kunena.com
*
* Based on FireBoard Component
* @Copyright (C) 2006 - 2007 Best Of Joomla All rights reserved
* @license http://www.gnu.org/copyleft/gpl.html GNU/GPL
* @link http://www.bestofjoomla.com
*
* Based on Joomlaboard Component
* @copyright (C) 2000 - 2004 TSMF / Jan de Graaff / All Rights Reserved
* @license http://www.gnu.org/copyleft/gpl.html GNU/GPL
* @author TSMF & Jan de Graaff
**/

// Dont allow direct linking
defined( '_JEXEC' ) or die('Restricted access');

require_once(KUNENA_PATH_LIB .DS. 'kunena.helpers.php');
require_once(KUNENA_PATH_LIB .DS. 'kunena.file.class.php');

$attachfile = JRequest::getVar('attachfile', NULL, 'FILES', 'array');
$filename = CKunenaFile::makeSafe($attachfile['name']);

function fileUploadError($msg)
{
    global $message;
    $GLOBALS['KUNENA_rc'] = 0;
    $message = str_replace("[file/]", "", $message);
    $app =& JFactory::getApplication();
    $app->enqueueMessage(_FILE_NOT_UPLOADED .' ('. $msg .')', 'notice');
}

$GLOBALS['KUNENA_rc'] = 1; //reset return code
$filename = explode('.', $filename);
//some transaltions for readability
//numExtensions= people tend to upload malicious files using mutliple extensions like: virus.txt.vbs; we'll want to have the last extension to validate against..
$numExtensions = (count($filename)) - 1;
//Translate all invalid characters
$fileName = preg_replace("/[^0-9a-zA-Z_]/", "_", $filename[0]);
// get the final extension
$fileExt = $filename[$numExtensions];
// create the new filename
$newFileName = $fileName . '.' . $fileExt;
// Get the Filesize
$fileSize = $attachfile['size'];

//Enforce it is a new file
if (file_exists(KUNENA_PATH_UPLOADED .DS. "files" .DS. $newFileName)) {
    $newFileName = $fileName . '-' . date('Ymd') . "." . $fileExt;
    for ($i=2; file_exists(KUNENA_PATH_UPLOADED .DS. "files" .DS. $newFileName); $i++) {
    	$newFileName = $fileName . '-' . date('Ymd') . "-$i." . $fileExt;
    }
}

if ($GLOBALS['KUNENA_rc'])
{
    //Filename + proper path
    $fileLocation = strtr(KUNENA_PATH_UPLOADED .DS. "files" .DS. $newFileName, "\\", "/");
    $allowedArray = explode(',', strtolower($fbConfig->filetypes));
    $maxImgSize = $fbConfig->filesize * 1024;

    // Check for empty filename
    if (!is_uploaded_file($attachfile['tmp_name']) || empty($attachfile['name'])) {
        fileUploadError(_FILE_ERROR_EMPTY);
    }
    // check for allowed file types
    else if (!in_array($fileExt, $allowedArray)) {
        fileUploadError(_FILE_ERROR_TYPE . " " . $fbConfig->filetypes);
    }
    // Check filesize
    else if ($fileSize > $maxImgSize) {
        fileUploadError(_FILE_ERROR_SIZE . " (" . $fbConfig->filesize . "kb)");
    }
}

if ($GLOBALS['KUNENA_rc'])
{
	// file is OK, move it to the proper location
	CKunenaFile::upload($attachfile['tmp_name'], $fileLocation);

	// Insert file code into message
    $code
        = '[file name='
        . $newFileName . ' size=' . $fileSize . ']' . KUNENA_LIVEUPLOADEDPATH . '/files/' . $newFileName . '[/file]';

    if (preg_match("/\[file\/\]/si", $message)) {
        $message = str_replace("[file/]", $code, $message);
    }
    else {
        $message = $message . ' ' . $code;
    }
}
?>