<?php

/*

 * CKFinder

 * ========

 * http://cksource.com/ckfinder

 * Copyright (C) 2007-2014, CKSource - Frederico Knabben. All rights reserved.

 *

 * The software, this file and its contents are subject to the CKFinder

 * License. Please read the license.txt file before using, installing, copying,

 * modifying or distribute this file or part of its contents. The contents of

 * this file is part of the Source Code of CKFinder.

 */

if (!defined('IN_CKFINDER')) exit;



/**

 * @package CKFinder

 * @subpackage Config

 * @copyright CKSource - Frederico Knabben

 */



/**

 * This class keeps resource types configuration

 *

 * @package CKFinder

 * @subpackage Config

 * @copyright CKSource - Frederico Knabben

 */

class CKFinder_Connector_Core_ResourceTypeConfig

{

    /**

     * Resource name

     *

     * @var string

     * @access private

     */

    private $_name = "";

    /**

     * Resource url

     *

     * @var string

     * @access private

     */

    private $_url = "";

    /**

     * Directory path on a server

     *

     * @var string

     * @access private

     */

    private $_directory = "";

    /**

     * Max size

     *

     * @var unknown_type

     * @access private

     */

    private $_maxSize = 0;

    /**

     * Array with allowed extensions

     *

     * @var array[]string

     * @access private

     */

    private $_allowedExtensions = array();

    /**

     * Array with denied extensions

     *

     * @var array[]string

     * @access private

     */

    private $_deniedExtensions = array();

    /**

     * used for CKFinder_Connector_Core_Config object caching

     *

     * @var CKFinder_Connector_Core_Config

     * @access private

     */

    private $_config;



    /**

     * Get ResourceType configuration

     *

     * @param string $resourceTypeNode

     * @return array

     *

     */

    function __construct($resourceTypeNode)

    {

        if (isset($resourceTypeNode["name"])) {

            $this->_name = $resourceTypeNode["name"];

        }



        if (isset($resourceTypeNode["url"])) {

            $this->_url = $resourceTypeNode["url"];

        }



        if (!strlen($this->_url)) {

            $this->_url = "/";

        }

        else if(substr($this->_url,-1,1) != "/") {

            $this->_url .= "/";

        }



        if (isset($resourceTypeNode["maxSize"])) {

            $this->_maxSize = CKFinder_Connector_Utils_Misc::returnBytes((string)$resourceTypeNode["maxSize"]);

        }



        if (isset($resourceTypeNode["directory"])) {

            $this->_directory = $resourceTypeNode["directory"];

        }



        if (!strlen($this->_directory)) {

            $this->_directory = resolveUrl($this->_url);

        }



        if (isset($resourceTypeNode["allowedExtensions"])) {

            if (is_array($resourceTypeNode["allowedExtensions"])) {

                foreach ($resourceTypeNode["allowedExtensions"] as $e) {

                    $this->_allowedExtensions[] = strtolower(trim((string)$e));

                }

            }

            else {

                $resourceTypeNode["allowedExtensions"] = trim((string)$resourceTypeNode["allowedExtensions"]);

                if (strlen($resourceTypeNode["allowedExtensions"])) {

                    $extensions = explode(",", $resourceTypeNode["allowedExtensions"]);

                    foreach ($extensions as $e) {

                        $this->_allowedExtensions[] = strtolower(trim($e));

                    }

                }

            }

        }



        if (isset($resourceTypeNode["deniedExtensions"])) {

            if (is_array($resourceTypeNode["deniedExtensions"])) {



                foreach ($resourceTypeNode["deniedExtensions"] as $extension) {

                    $this->_deniedExtensions[] = strtolower(trim((string)$e));

                }

            }

            else {

                $resourceTypeNode["deniedExtensions"] = trim((string)$resourceTypeNode["deniedExtensions"]);

                if (strlen($resourceTypeNode["deniedExtensions"])) {

                    $extensions = explode(",", $resourceTypeNode["deniedExtensions"]);

                    foreach ($extensions as $e) {

                        $this->_deniedExtensions[] = strtolower(trim($e));

                    }

                }

            }

        }

    }



    /**

     * Get name

     *

     * @access public

     * @return string

     */

    public function getName()

    {

        return $this->_name;

    }



    /**

     * Get url

     *

     * @access public

     * @return string

     */

    public function getUrl()

    {

        return $this->_url;

    }



    /**

     * Get directory

     *

     * @access public

     * @return string

     */

    public function getDirectory()

    {

        return $this->_directory;

    }



    /**

     * Get max size

     *

     * @access public

     * @return int

     */

    public function getMaxSize()

    {

        return $this->_maxSize;

    }



    /**

     * Get allowed extensions

     *

     * @access public

     * @return array[]string

     */

    public function getAllowedExtensions()

    {

        return $this->_allowedExtensions;

    }



    /**

     * Get denied extensions

     *

     * @access public

     * @return array[]string

     */

    public function getDeniedExtensions()

    {

        return $this->_deniedExtensions;

    }



    /**

     * Check extension, return true if file name is valid.

     * Return false if extension is on denied list.

     * If allowed extensions are defined, return false if extension isn't on allowed list.

     *

     * @access public

     * @param string $extension extension

     * @param boolean $renameIfRequired whether try to rename file or not

     * @return boolean

     */

    public function checkExtension(&$fileName, $renameIfRequired = true)

    {

        if (strpos($fileName, '.') === false) {

            return true;

        }



        if (is_null($this->_config)) {

            $this->_config =& CKFinder_Connector_Core_Factory::getInstance("Core_Config");

        }



        if ($this->_config->getCheckDoubleExtension()) {

            $pieces = explode('.', $fileName);



            // First, check the last extension (ex. in file.php.jpg, the "jpg").

            if ( !$this->checkSingleExtension( $pieces[sizeof($pieces)-1] ) ) {

                return false;

            }



            if ($renameIfRequired) {

                // Check the other extensions, rebuilding the file name. If an extension is

                // not allowed, replace the dot with an underscore.

                $fileName = $pieces[0] ;

                for ($i=1; $i<sizeof($pieces)-1; $i++) {

                    $fileName .= $this->checkSingleExtension( $pieces[$i] ) ? '.' : '_' ;

                    $fileName .= $pieces[$i];

                }



                // Add the last extension to the final name.

                $fileName .= '.' . $pieces[sizeof($pieces)-1] ;

            }

        }

        else {

            // Check only the last extension (ex. in file.php.jpg, only "jpg").

            return $this->checkSingleExtension( substr($fileName, strrpos($fileName,'.')+1) );

        }



        return true;

    }



    /**

     * Check given folder name

     * Return true if folder name matches hidden folder names list

     *

     * @param string $folderName

     * @access public

     * @return boolean

     */

    public function checkIsHiddenFolder($folderName)

    {

        if (is_null($this->_config)) {

            $this->_config =& CKFinder_Connector_Core_Factory::getInstance("Core_Config");

        }



        $regex = $this->_config->getHideFoldersRegex();

        if ($regex) {

            return preg_match($regex, $folderName);

        }



        return false;

    }



    /**

     * Check given file name

     * Return true if file name matches hidden file names list

     *

     * @param string $fileName

     * @access public

     * @return boolean

     */

    public function checkIsHiddenFile($fileName)

    {

        if (is_null($this->_config)) {

            $this->_config =& CKFinder_Connector_Core_Factory::getInstance("Core_Config");

        }



        $regex = $this->_config->getHideFilesRegex();

        if ($regex) {

            return preg_match($regex, $fileName);

        }



        return false;

    }



    /**

     * Check given path

     * Return true if path contains folder name that matches hidden folder names list

     *

     * @param string $folderName

     * @access public

     * @return boolean

     */

    public function checkIsHiddenPath($path)

    {

        $_clientPathParts = explode("/", trim($path, "/"));

        if ($_clientPathParts) {

            foreach ($_clientPathParts as $_part) {

                if ($this->checkIsHiddenFolder($_part)) {

                    return true;

                }

            }

        }



        return false;

    }



    /**

     * Check if extension is allowed

     * Return true if the extension is allowed.

     *

     * @param string $extension

     * @access public

     * @return boolean

     */

    public function checkSingleExtension($extension)

    {

        $extension = strtolower(ltrim($extension,'.'));



        if (sizeof($this->_deniedExtensions)) {

            if (in_array($extension, $this->_deniedExtensions)) {

                return false;

            }

        }



        if (sizeof($this->_allowedExtensions)) {

            return in_array($extension, $this->_allowedExtensions);

        }



        return true;

    }



    /**

     * Generate hash for current resource type

     *

     * @access public

     * @return string 16 digit hash

     */

    public function getHash(){

      return substr(md5($this->getDirectory()), 0, 16);

    }

}