source: extensions/FCKEditor/editor/filemanager/connectors/php/io.php @ 3295

<?php
/*
 * FCKeditor - The text editor for Internet - http://www.fckeditor.net
 * Copyright (C) 2003-2009 Frederico Caldeira Knabben
 *
 * == BEGIN LICENSE ==
 *
 * Licensed under the terms of any of the following licenses at your
 * choice:
 *
 *  - GNU General Public License Version 2 or later (the "GPL")
 *    http://www.gnu.org/licenses/gpl.html
 *
 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
 *    http://www.gnu.org/licenses/lgpl.html
 *
 *  - Mozilla Public License Version 1.1 or later (the "MPL")
 *    http://www.mozilla.org/MPL/MPL-1.1.html
 *
 * == END LICENSE ==
 *
 * This is the File Manager Connector for PHP.
 */
function CombinePaths( $sBasePath, $sFolder )
{
        return RemoveFromEnd( $sBasePath, '/' ) . '/' . RemoveFromStart( $sFolder, '/' ) ;
}
function GetResourceTypePath( $resourceType, $sCommand )
{
        global $Config ;

        if ( $sCommand == "QuickUpload")
                return $Config['QuickUploadPath'][$resourceType] ;
        else
                return $Config['FileTypesPath'][$resourceType] ;
}

function GetResourceTypeDirectory( $resourceType, $sCommand )
{
        global $Config ;
        if ( $sCommand == "QuickUpload")
        {
                if ( strlen( $Config['QuickUploadAbsolutePath'][$resourceType] ) > 0 )
                        return $Config['QuickUploadAbsolutePath'][$resourceType] ;

                // Map the "UserFiles" path to a local directory.
                return Server_MapPath( $Config['QuickUploadPath'][$resourceType] ) ;
        }
        else
        {
                if ( strlen( $Config['FileTypesAbsolutePath'][$resourceType] ) > 0 )
                        return $Config['FileTypesAbsolutePath'][$resourceType] ;

                // Map the "UserFiles" path to a local directory.
                return Server_MapPath( $Config['FileTypesPath'][$resourceType] ) ;
        }
}

function GetUrlFromPath( $resourceType, $folderPath, $sCommand )
{
        return CombinePaths( GetResourceTypePath( $resourceType, $sCommand ), $folderPath ) ;
}

function RemoveExtension( $fileName )
{
        return substr( $fileName, 0, strrpos( $fileName, '.' ) ) ;
}

function ServerMapFolder( $resourceType, $folderPath, $sCommand )
{
        // Get the resource type directory.
        $sResourceTypePath = GetResourceTypeDirectory( $resourceType, $sCommand ) ;

        // Ensure that the directory exists.
        $sErrorMsg = CreateServerFolder( $sResourceTypePath ) ;
        if ( $sErrorMsg != '' )
                SendError( 1, "Error creating folder \"{$sResourceTypePath}\" ({$sErrorMsg})" ) ;

        // Return the resource type directory combined with the required path.
        return CombinePaths( $sResourceTypePath , $folderPath ) ;
}

function GetParentFolder( $folderPath )
{
        $sPattern = "-[/\\\\][^/\\\\]+[/\\\\]?$-" ;
        return preg_replace( $sPattern, '', $folderPath ) ;
}

function CreateServerFolder( $folderPath, $lastFolder = null )
{
        global $Config ;
        $sParent = GetParentFolder( $folderPath ) ;

        // Ensure the folder path has no double-slashes, or mkdir may fail on certain platforms
        while ( strpos($folderPath, '//') !== false )
        {
                $folderPath = str_replace( '//', '/', $folderPath ) ;
        }

        // Check if the parent exists, or create it.
        if ( !file_exists( $sParent ) )
        {
                //prevents agains infinite loop when we can't create root folder
                if ( !is_null( $lastFolder ) && $lastFolder === $sParent) {
                        return "Can't create $folderPath directory" ;
                }

                $sErrorMsg = CreateServerFolder( $sParent, $folderPath ) ;
                if ( $sErrorMsg != '' )
                        return $sErrorMsg ;
        }

        if ( !file_exists( $folderPath ) )
        {
                // Turn off all error reporting.
                error_reporting( 0 ) ;

                $php_errormsg = '' ;
                // Enable error tracking to catch the error.
                ini_set( 'track_errors', '1' ) ;

                if ( isset( $Config['ChmodOnFolderCreate'] ) && !$Config['ChmodOnFolderCreate'] )
                {
                        mkdir( $folderPath ) ;
                }
                else
                {
                        $permissions = 0777 ;
                        if ( isset( $Config['ChmodOnFolderCreate'] ) )
                        {
                                $permissions = $Config['ChmodOnFolderCreate'] ;
                        }
                        // To create the folder with 0777 permissions, we need to set umask to zero.
                        $oldumask = umask(0) ;
                        mkdir( $folderPath, $permissions ) ;
                        umask( $oldumask ) ;
                }

                $sErrorMsg = $php_errormsg ;

                // Restore the configurations.
                ini_restore( 'track_errors' ) ;
                ini_restore( 'error_reporting' ) ;

                return $sErrorMsg ;
        }
        else
                return '' ;
}

function GetRootPath()
{
        if (!isset($_SERVER)) {
                global $_SERVER;
        }
        $sRealPath = realpath( './' ) ;
        // #2124 ensure that no slash is at the end
        $sRealPath = rtrim($sRealPath,"\\/");

        $sSelfPath = $_SERVER['PHP_SELF'] ;
        $sSelfPath = substr( $sSelfPath, 0, strrpos( $sSelfPath, '/' ) ) ;

        $sSelfPath = str_replace( '/', DIRECTORY_SEPARATOR, $sSelfPath ) ;

        $position = strpos( $sRealPath, $sSelfPath ) ;

        // This can check only that this script isn't run from a virtual dir
        // But it avoids the problems that arise if it isn't checked
        if ( $position === false || $position <> strlen( $sRealPath ) - strlen( $sSelfPath ) )
                SendError( 1, 'Sorry, can\'t map "UserFilesPath" to a physical path. You must set the "UserFilesAbsolutePath" value in "editor/filemanager/connectors/php/config.php".' ) ;

        return substr( $sRealPath, 0, $position ) ;
}

// Emulate the asp Server.mapPath function.
// given an url path return the physical directory that it corresponds to
function Server_MapPath( $path )
{
        // This function is available only for Apache
        if ( function_exists( 'apache_lookup_uri' ) )
        {
                $info = apache_lookup_uri( $path ) ;
                return $info->filename . $info->path_info ;
        }

        // This isn't correct but for the moment there's no other solution
        // If this script is under a virtual directory or symlink it will detect the problem and stop
        return GetRootPath() . $path ;
}

function IsAllowedExt( $sExtension, $resourceType )
{
        global $Config ;
        // Get the allowed and denied extensions arrays.
        $arAllowed      = $Config['AllowedExtensions'][$resourceType] ;
        $arDenied       = $Config['DeniedExtensions'][$resourceType] ;

        if ( count($arAllowed) > 0 && !in_array( $sExtension, $arAllowed ) )
                return false ;

        if ( count($arDenied) > 0 && in_array( $sExtension, $arDenied ) )
                return false ;

        return true ;
}

function IsAllowedType( $resourceType )
{
        global $Config ;
        if ( !in_array( $resourceType, $Config['ConfigAllowedTypes'] ) )
                return false ;

        return true ;
}

function IsAllowedCommand( $sCommand )
{
        global $Config ;

        if ( !in_array( $sCommand, $Config['ConfigAllowedCommands'] ) )
                return false ;

        return true ;
}

function GetCurrentFolder()
{
        if (!isset($_GET)) {
                global $_GET;
        }
        $sCurrentFolder = isset( $_GET['CurrentFolder'] ) ? $_GET['CurrentFolder'] : '/' ;

        // Check the current folder syntax (must begin and start with a slash).
        if ( !preg_match( '|/$|', $sCurrentFolder ) )
                $sCurrentFolder .= '/' ;
        if ( strpos( $sCurrentFolder, '/' ) !== 0 )
                $sCurrentFolder = '/' . $sCurrentFolder ;

        // Ensure the folder path has no double-slashes
        while ( strpos ($sCurrentFolder, '//') !== false ) {
                $sCurrentFolder = str_replace ('//', '/', $sCurrentFolder) ;
        }

        // Check for invalid folder paths (..)
        if ( strpos( $sCurrentFolder, '..' ) || strpos( $sCurrentFolder, "\\" ))
                SendError( 102, '' ) ;

        return $sCurrentFolder ;
}

// Do a cleanup of the folder name to avoid possible problems
function SanitizeFolderName( $sNewFolderName )
{
        $sNewFolderName = stripslashes( $sNewFolderName ) ;

        // Remove . \ / | : ? * " < >
        $sNewFolderName = preg_replace( '/\\.|\\\\|\\/|\\||\\:|\\?|\\*|"|<|>|[[:cntrl:]]/', '_', $sNewFolderName ) ;

        return $sNewFolderName ;
}

// Do a cleanup of the file name to avoid possible problems
function SanitizeFileName( $sNewFileName )
{
        global $Config ;

        $sNewFileName = stripslashes( $sNewFileName ) ;

        // Replace dots in the name with underscores (only one dot can be there... security issue).
        if ( $Config['ForceSingleExtension'] )
                $sNewFileName = preg_replace( '/\\.(?![^.]*$)/', '_', $sNewFileName ) ;

        // Remove \ / | : ? * " < >
        $sNewFileName = preg_replace( '/\\\\|\\/|\\||\\:|\\?|\\*|"|<|>|[[:cntrl:]]/', '_', $sNewFileName ) ;

        return $sNewFileName ;
}

// This is the function that sends the results of the uploading process.
function SendUploadResults( $errorNumber, $fileUrl = '', $fileName = '', $customMsg = '' )
{
        // Minified version of the document.domain automatic fix script (#1919).
        // The original script can be found at _dev/domain_fix_template.js
        echo <<<EOF
<script type="text/javascript">
(function(){var d=document.domain;while (true){try{var A=window.parent.document.domain;break;}catch(e) {};d=d.replace(/.*?(?:\.|$)/,'');if (d.length==0) break;try{document.domain=d;}catch (e){break;}}})();
EOF;

        $rpl = array( '\\' => '\\\\', '"' => '\\"' ) ;
        echo 'window.parent.OnUploadCompleted(' . $errorNumber . ',"' . strtr( $fileUrl, $rpl ) . '","' . strtr( $fileName, $rpl ) . '", "' . strtr( $customMsg, $rpl ) . '") ;' ;
        echo '</script>' ;
        exit ;
}

?>