XoopsModules25x / xoopsinfo

class/uploader.php

<?php

For compatibility and reusability of your code, PSR1 recommends that a file should introduce either new symbols (like classes, functions, etc.) or have side-effects (like outputting something, or including other files), but not both at the same time. The first symbol is defined on line 68 and the first side effect is on line 63.

// $Id: uploader.php 507 2006-05-26 23:39:35Z skalpa $
//  ------------------------------------------------------------------------ //
//                XOOPS - PHP Content Management System                      //
//                    Copyright (c) 2000 XOOPS.org                           //
//                       <http://www.xoops.org/>                             //
//  ------------------------------------------------------------------------ //
//  This program is free software; you can redistribute it and/or modify     //
//  it under the terms of the GNU General Public License as published by     //
//  the Free Software Foundation; either version 2 of the License, or        //
//  (at your option) any later version.                                      //
//                                                                           //
//  You may not change or alter any portion of this comment or credits       //
//  of supporting developers from this source code or any supporting         //
//  source code which is considered copyrighted (c) material of the          //
//  original comment or credit authors.                                      //
//                                                                           //
//  This program is distributed in the hope that it will be useful,          //
//  but WITHOUT ANY WARRANTY; without even the implied warranty of           //
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the            //
//  GNU General Public License for more details.                             //
//                                                                           //
//  You should have received a copy of the GNU General Public License        //
//  along with this program; if not, write to the Free Software              //
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA //
//  ------------------------------------------------------------------------ //
// Author: Kazumi Ono (AKA onokazu)                                          //
// URL: http://www.myweb.ne.jp/, http://www.xoops.org/, http://jp.xoops.org/ //
// Project: The XOOPS Project                                                //
// ------------------------------------------------------------------------- //
/**
 * Upload Media files
 *
 * Example of usage:
 * <code>
 * include_once 'uploader.php';
 * $allowed_mimetypes = array('image/gif', 'image/jpeg', 'image/pjpeg', 'image/x-png');
 * $maxfilesize = 50000;
 * $maxfilewidth = 120;
 * $maxfileheight = 120;
 * $uploader = new XoopsMediaUploader('/home/xoops/uploads', $allowed_mimetypes, $maxfilesize, $maxfilewidth, $maxfileheight);
 * if ($uploader->fetchMedia($_POST['uploade_file_name'])) {
 *   if (!$uploader->upload()) {
 *      echo $uploader->getErrors();
 *   } else {
 *      echo '<h4>File uploaded successfully!</h4>'
 *      echo 'Saved as: ' . $uploader->getSavedFileName() . '<br />';
 *      echo 'Full path: ' . $uploader->getSavedDestination();
 *   }
 * } else {
 *   echo $uploader->getErrors();
 * }
 * </code>
 *
 * @package        kernel
 * @subpackage    core
 *
 * @author        Kazumi Ono     <onokazu@xoops.org>
 * @copyright    (c) 2000-2003 The Xoops Project - www.xoops.org
*/

if ( file_exists(XOOPS_ROOT_PATH . '/language/' . $GLOBALS['xoopsConfig']['language'] . '/uploader_error.php') ) {
	include_once XOOPS_ROOT_PATH . '/language/' . $GLOBALS['xoopsConfig']['language'] . '/uploader_error.php';
} else {
	include_once XOOPS_ROOT_PATH . '/language/english/uploader_error.php';
}

define('_XI_MIMETYPE', 1);
class XoopsMediaUploader {

PSR1 recommends that each class must be in a namespace of at least one level to avoid collisions.

	/**
	* Flag indicating if unrecognized mimetypes should be allowed (use with precaution ! may lead to security issues )
	**/
	var $allowUnknownTypes = false;

	var $mediaName;
	var $mediaType;
	var $mediaSize;
	var $mediaTmpName;
	var $mediaError;
	var $mediaRealType = '';

	var $uploadDir = '';

	var $allowedMimeTypes = array();

	var $maxFileSize = 0;
	var $maxWidth;
	var $maxHeight;

	var $targetFileName;

	var $prefix;

	var $errors = array();

	var $savedDestination;

	var $savedFileName;

	var $extensionToMime = array();
	var $checkImageType = true;

	var $extensionsToBeSanitized = array( 'php' , 'phtml' , 'phtm' , 'php3' , 'php4' , 'cgi' , 'pl' , 'asp', 'php5' );
	// extensions needed image check (anti-IE Content-Type XSS)
	var $imageExtensions = array( 1 => 'gif', 2 => 'jpg', 3 => 'png', 4 => 'swf', 5 => 'psd', 6 => 'bmp', 7 => 'tif', 8 => 'tif', 9 => 'jpc', 10 => 'jp2', 11 => 'jpx', 12 => 'jb2', 13 => 'swc', 14 => 'iff', 15 => 'wbmp', 16 => 'xbm' );

	/**
	* Constructor
	*
	* @param   string  $uploadDir
	* @param   array   $allowedMimeTypes
	* @param   int$maxFileSize
	* @param   int$maxWidth
	* @param   int$maxHeight
	* @param   int$cmodvalue
	**/
	function XoopsMediaUploader($uploadDir, $allowedMimeTypes, $maxFileSize=0, $maxWidth=null, $maxHeight=null) {
/*
		@$this->extensionToMime = include( XOOPS_ROOT_PATH . '/class/mimetypes.inc.php' );
		if ( !is_array( $this->extensionToMime ) ) {
			$this->extensionToMime = array();
			return false;
		}
		if (is_array($allowedMimeTypes)) {
			$this->allowedMimeTypes =& $allowedMimeTypes;
		}
		$this->uploadDir = $uploadDir;
		$this->maxFileSize = intval($maxFileSize);
		if(isset($maxWidth)) {
			$this->maxWidth = intval($maxWidth);
		}
		if(isset($maxHeight)) {
			$this->maxHeight = intval($maxHeight);
		}
*/
		if (is_array($allowedMimeTypes)) {
			$this->allowedMimeTypes =& $allowedMimeTypes;
		}

		$this->uploadDir = $uploadDir;
		$this->maxFileSize = intval($maxFileSize);
		$this->maxWidth = intval($maxWidth);
		$this->maxHeight = intval($maxHeight);
		$this->GetextensionToMime();
	}

	/**
	* Fetch the uploaded file
	*
	* @param   string  $media_name Name of the file field
	* @param   int$index Index of the file (if more than one uploaded under that name)
	* @return  bool
	**/
	function fetchMedia($media_name, $index = null) {
/*
		if ( empty( $this->extensionToMime ) ) {
*/
		if ( count( $this->extensionToMime ) == 0 ) {
			$this->setErrors( _ER_UP_MIMETYPELOAD );
		return false;
	}

	if (!isset($_FILES[$media_name])) {
		$this->setErrors( _ER_UP_FILENOTFOUND );
		return false;
	} elseif (is_array($_FILES[$media_name]['name']) && isset($index)) {
		$index = intval($index);
		$this->mediaName = (get_magic_quotes_gpc()) ? stripslashes($_FILES[$media_name]['name'][$index]) : $_FILES[$media_name]['name'][$index];
		$this->mediaType = $_FILES[$media_name]['type'][$index];
		$this->mediaSize = $_FILES[$media_name]['size'][$index];
		$this->mediaTmpName = $_FILES[$media_name]['tmp_name'][$index];
		$this->mediaError = !empty($_FILES[$media_name]['error'][$index]) ? $_FILES[$media_name]['error'][$index] : 0;
	} else {
		$media_name =& $_FILES[$media_name];
		$this->mediaName = (get_magic_quotes_gpc()) ? stripslashes($media_name['name']) : $media_name['name'];
		$this->mediaName = $media_name['name'];
		$this->mediaType = $media_name['type'];
		$this->mediaSize = $media_name['size'];
		$this->mediaTmpName = $media_name['tmp_name'];
		$this->mediaError = !empty($media_name['error']) ? $media_name['error'] : 0;
	}
/*
	if ( ($ext = strrpos( $this->mediaName, '.' )) !== false ) {
		$ext = strtolower(substr( $this->mediaName, $ext + 1 ));
		if ( isset( $this->extensionToMime[$ext] ) ) {
			$this->mediaRealType = $this->extensionToMime[$ext];
			//trigger_error( "XoopsMediaUploader: Set mediaRealType to {$this->mediaRealType} (file extension is $ext)", E_USER_NOTICE );
		}
	}
*/

	$this->mediaExt = strtolower(substr( $this->mediaName, strrpos( $this->mediaName, '.' ) + 1 ));
	if ( array_key_exists($this->mediaExt, $this->extensionToMime) ) {
		$this->maxFileSize = $this->extensionToMime[$this->mediaExt]['maxSize'];
		$this->maxWidth = $this->extensionToMime[$this->mediaExt]['maxWidth'];
		$this->maxHeight = $this->extensionToMime[$this->mediaExt]['maxHeight'];
	}

	$this->errors = array();
	if (intval($this->mediaSize) < 0) {
		$this->setErrors(  _ER_UP_INVALIDFILESIZE );
		return false;
	}

	if ($this->mediaName == '') {
		$this->setErrors( _ER_UP_FILENAMEEMPTY );
		return false;
	}

	if ($this->mediaTmpName == 'none' || !is_uploaded_file($this->mediaTmpName)) {
		$this->setErrors( _ER_UP_NOFILEUPLOADED );
		return false;
	}

	if ($this->mediaError > 0) {
		$this->setErrors( sprintf(_ER_UP_ERROROCCURRED, $this->mediaError) );
		return false;
	}

	return true;
}

	/**
	* Set the target filename
	*
	* @param   string  $value
	**/
	function setTargetFileName($value) {
		$this->targetFileName = strval(trim($value));
	}

	/**
	* Set the prefix
	*
	* @param   string  $value
	**/
	function setPrefix($value){
		$this->prefix = strval(trim($value));
	}

	/**
	* Get the uploaded filename
	*
	* @return  string
	**/
	function getMediaName() {
		return $this->mediaName;
	}

	/**
	* Get the type of the uploaded file
	*
	* @return  string
	**/
	function getMediaType() {
		return $this->mediaType;
	}

	/**
	* Get the size of the uploaded file
	*
	* @return  int
	**/
	function getMediaSize() {
		return $this->mediaSize;
	}

	/**
	* Get the temporary name that the uploaded file was stored under
	*
	* @return  string
	**/
	function getMediaTmpName() {
		return $this->mediaTmpName;
	}

	/**
	* Get the saved filename
	*
	* @return  string
	**/
	function getSavedFileName(){
		return $this->savedFileName;
	}

	/**
	* Get the destination the file is saved to
	*
	* @return  string
	**/
	function getSavedDestination(){
		return $this->savedDestination;
	}

	/**
	* Check the file and copy it to the destination
	*
	* @return  bool
	**/
	function upload($chmod = 0644) {
		if ($this->uploadDir == '') {
			$this->setErrors( _ER_UP_UPLOADDIRNOTSET );
			return false;
		}

		if (!$this->checkMimeType()) {
			$this->setErrors( sprintf(_ER_UP_MIMETYPENOTALLOWED, $this->mediaType) );
			return false;
		}

		if (!is_dir($this->uploadDir)) {
			$this->setErrors( sprintf(_ER_UP_FAILEDOPENDIR, $this->uploadDir) );
		}
		if (!is_writeable($this->uploadDir)) {
			$this->setErrors( sprintf(_ER_UP_FAILEDOPENDIRWRITE, $this->uploadDir) );
		}

		$this->sanitizeMultipleExtensions();

		if (!$this->checkMaxFileSize()) {
			$this->setErrors( sprintf(_ER_UP_FILESIZETOOLARGE, $this->mediaSize) );
		}
		if (!$this->checkMaxWidth()) {
			$this->setErrors( sprintf(_ER_UP_FILEWIDTHTOOLARGE, $this->maxWidth) );
		}
		if (!$this->checkMaxHeight()) {
			$this->setErrors( sprintf(_ER_UP_FILEHEIGHTTOOLARGE, $this->maxHeight) );
		}
/*
		if (!$this->checkMimeType()) {
			$this->setErrors('MIME type not allowed: '.$this->mediaType);
		}
*/

		if (!$this->checkImageType()) {
			$this->setErrors( _ER_UP_INVALIDIMAGEFILE );
		}
		if (count($this->errors) > 0) {
			return false;
		}
		if (!$this->_copyFile($chmod)) {
			$this->setErrors( sprintf(_ER_UP_FAILEDUPLOADFILE, $this->mediaName) );
			return false;
		}
		return true;
	}

	/**
	* Copy the file to its destination
	*
	* @return  bool
	**/
	function _copyFile($chmod) {
		$matched = array();
		if (!preg_match("/\.([a-zA-Z0-9]+)$/", $this->mediaName, $matched)) {
			return false;
		}
		if (isset($this->targetFileName)) {
			$this->savedFileName = $this->targetFileName;
		} elseif (isset($this->prefix)) {
			$this->savedFileName = uniqid($this->prefix).'.'.strtolower($matched[1]);
		} else {
			$this->savedFileName = strtolower($this->mediaName);
		}
		$this->savedDestination = $this->uploadDir.'/'.$this->savedFileName;
		if (!move_uploaded_file($this->mediaTmpName, $this->savedDestination)) {
			return false;
		}

		// Check IE XSS before returning success
		$ext = strtolower( substr( strrchr( $this->savedDestination , '.' ) , 1 ) ) ;
		if( in_array( $ext , $this->imageExtensions ) ) {
			$info = @getimagesize( $this->savedDestination ) ;
			if( $info === false || $this->imageExtensions[ (int)$info[2] ] != $ext ) {
				$this->setErrors( _ER_UP_SUSPICIOUSIMAGE );
				@unlink( $this->savedDestination );
				return false;
			}
		}

		@chmod($this->savedDestination, $chmod);
		return true;
	}

	/**
	* Is the file the right size?
	*
	* @return  bool
	**/
	function checkMaxFileSize() {
		if ($this->mediaSize > $this->maxFileSize) {
			return false;
		}
		return true;
	}

	/**
	* Is the picture the right width?
	*
	* @return  bool
	**/
	function checkMaxWidth() {
		if (!isset($this->maxWidth)) {
			return true;
		}
		if (false !== $dimension = getimagesize($this->mediaTmpName)) {
			if ($dimension[0] > $this->maxWidth) {
				return false;
			}
		} else {
			trigger_error(sprintf('Failed fetching image size of %s, skipping max width check..', $this->mediaTmpName), E_USER_WARNING);
		}
		return true;
	}

	/**
	* Is the picture the right height?
	*
	* @return  bool
	**/
	function checkMaxHeight() {
		if (!isset($this->maxHeight)) {
			return true;
		}
		if (false !== $dimension = getimagesize($this->mediaTmpName)) {
			if ($dimension[1] > $this->maxHeight) {
				return false;
			}
 			trigger_error(sprintf('Failed fetching image size of %s, skipping max height check..', $this->mediaTmpName), E_USER_WARNING);
		}
		return true;
	}

	/**
	* Check whether or not the uploaded file type is allowed
	*
	* @return  bool
	**/
	function checkMimeType() {
/*
		if ( empty( $this->mediaRealType ) && !$this->allowUnknownTypes ) {
			$this->setErrors( 'Unknown filetype rejected' );
			return false;
		}

		return ( empty($this->allowedMimeTypes) || in_array($this->mediaRealType, $this->allowedMimeTypes) );
*/

		if ( count( $this->extensionToMime ) == 0 ) {
			$this->setErrors( _ER_UP_UNKNOWNFILETYPEREJECTED );
			return false;
		}
		return ( empty($this->extensionToMime) || array_key_exists($this->mediaExt, $this->extensionToMime) );
	}

	/**
	* Check whether or not the uploaded image type is valid
	*
	* @return  bool
	**/
	function checkImageType() {
		if(empty($this->checkImageType)) return true;

		if( ("image" == substr($this->mediaType, 0, strpos($this->mediaType, "/"))) ||
			(!empty($this->mediaRealType) && "image" == substr($this->mediaRealType, 0, strpos($this->mediaRealType, "/"))) ){

			if ( ! ( $info = @getimagesize( $this->mediaTmpName ) ) ) {
				return false;
			}
		}
		return true;
	}

	/**
	* Sanitize executable filename with multiple extensions
	*
	**/
	function sanitizeMultipleExtensions() {
		if(empty($this->extensionsToBeSanitized)) return;
			$patterns = array();
			$replaces = array();
			foreach($this->extensionsToBeSanitized as $ext){
			$patterns[] = "/\.".preg_quote($ext)."\./i";
			$replaces[] = "_".$ext.".";
		}
		$this->mediaName = preg_replace($patterns, $replaces, $this->mediaName);
	}

	function GetextensionToMime() {
		global $xoopsModule, $xoopsUser, $xoopsDB;

Use of global functionality is not recommended; it makes your code harder to test, and less reusable.

		if (!is_object ( $xoopsModule ) ) {
			$hModule = &xoops_gethandler('module');
			$xoopsModule = $hModule->getByDirname('system');
		}

		$groups = is_object( $xoopsUser ) ? $xoopsUser -> getGroups() : array(XOOPS_GROUP_ANONYMOUS) ;
		$sql = 'SELECT t.mime_types, t.mime_ext, p.mperm_maxwidth, p.mperm_maxheight, p.mperm_maxsize FROM ' .
		$xoopsDB->prefix('mimetypes_perms') . ' p LEFT JOIN ' .
		$xoopsDB->prefix("mimetypes") . ' t on p.mperm_mime = t.mime_id' . ' WHERE p.mperm_module=' . $xoopsModule->mid() . ' AND p.mperm_groups IN (' . implode(',' , $groups) . ')' . ' GROUP BY t.mime_ext' ;

		$result = $xoopsDB->query($sql);
		while ( $myrow = $xoopsDB->fetchArray($result) ) {
			$mime_types = explode('|',$myrow['mime_types']);
			$intersect = array_intersect($this->allowedMimeTypes,$mime_types);
			if (count($intersect) > 0) {
				$mimeExt = $myrow['mime_ext'];
				$this->extensionToMime[$mimeExt] = array( 'maxWidth' => $myrow['mperm_maxwidth'], 'maxHeight' => $myrow['mperm_maxwidth'], 'maxSize' => $myrow['mperm_maxsize'] );
			}
		}
	}

	/**
	* Add an error
	*
	* @param   string  $error
	**/
	function setErrors($error) {
		$this->errors[] = trim($error);
	}

	/**
	* Get generated errors
	*
	* @param    bool    $ashtml Format using HTML?
	*
	* @return    array|string    Array of array messages OR HTML string
	*/
	function &getErrors($ashtml = true) {
		if (!$ashtml) {
			return $this->errors;
		} else {
			$ret = '';
			if (count($this->errors) > 0) {
				$ret = '<h4>Errors Returned While Uploading</h4>';
				foreach ($this->errors as $error) {
					$ret .= $error.'<br />';
				}
			}
			return $ret;
		}
	}
}
?>