<?php

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/**

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* Simple elFinder driver for SFTP using phpseclib 1

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*

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* @author Dmitry (dio) Levashov

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* @author Cem (discofever), sitecode

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* @reference http://phpseclib.sourceforge.net/sftp/2.0/examples.html

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**/

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class elFinderVolumeSFTPphpseclib extends elFinderVolumeFTP {

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/**

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* Constructor

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* Extend options with required fields

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*

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* @author Dmitry (dio) Levashov

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* @author Cem (DiscoFever)

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*/

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public function __construct()

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{

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$opts = array(

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'host' => 'localhost',

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'user' => '',

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'pass' => '',

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'port' => 22,

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'path' => '/',

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'timeout' => 20,

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'owner' => true,

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'tmbPath' => '',

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'tmpPath' => '',

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'separator' => '/',

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'phpseclibDir' => '../phpseclib/',

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'connectCallback' => null, //provide your own already instantiated phpseclib $Sftp object returned by this callback

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//'connectCallback'=> function($options) {

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// //load and instantiate phpseclib $sftp

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// return $sftp;

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// },

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'checkSubfolders' => -1,

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'dirMode' => 0755,

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'fileMode' => 0644,

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'rootCssClass' => 'elfinder-navbar-root-ftp',

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);

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$this->options = array_merge($this->options, $opts);

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$this->options['mimeDetect'] = 'internal';

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}

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/**

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* Prepare

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* Call from elFinder::netmout() before volume->mount()

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*

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* @param $options

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*

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* @return array volume root options

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* @author Naoki Sawada

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*/

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public function netmountPrepare($options)

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{

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$options['statOwner'] = true;

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$options['allowChmodReadOnly'] = true;

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$options['acceptedName'] = '#^[^/\\?*:|"<>]*[^./\\?*:|"<>]$#';

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return $options;

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}

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/*********************************************************************/

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/* INIT AND CONFIGURE */

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/*********************************************************************/

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/**

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* Prepare SFTP connection

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* Connect to remote server and check if credentials are correct, if so, store the connection

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*

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* @return bool

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* @author Dmitry (dio) Levashov

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* @author Cem (DiscoFever)

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**/

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protected function init()

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{

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if (!$this->options['connectCallback']) {

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if (!$this->options['host']

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|| !$this->options['port']) {

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return $this->setError('Required options undefined.');

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}

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if (!$this->options['path']) {

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$this->options['path'] = '/';

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}

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// make net mount key

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$this->netMountKey = md5(join('-', array('sftpphpseclib', $this->options['host'], $this->options['port'], $this->options['path'], $this->options['user'])));

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set_include_path(get_include_path() . PATH_SEPARATOR . getcwd().'/'.$this->options['phpseclibDir']);

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include_once('Net/SFTP.php');

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if (!class_exists('Net_SFTP')) {

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return $this->setError('SFTP extension not loaded. Install phpseclib version 1: http://phpseclib.sourceforge.net/ Set option "phpseclibDir" accordingly.');

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}

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// remove protocol from host

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$scheme = parse_url($this->options['host'], PHP_URL_SCHEME);

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if ($scheme) {

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$this->options['host'] = substr($this->options['host'], strlen($scheme) + 3);

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}

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} else {

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// make net mount key

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$this->netMountKey = md5(join('-', array('sftpphpseclib', $this->options['path'])));

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}

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// normalize root path

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$this->root = $this->options['path'] = $this->_normpath($this->options['path']);

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if (empty($this->options['alias'])) {

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$this->options['alias'] = $this->options['user'] . '@' . $this->options['host'];

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if (!empty($this->options['netkey'])) {

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elFinder::$instance->updateNetVolumeOption($this->options['netkey'], 'alias', $this->options['alias']);

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}

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}

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$this->rootName = $this->options['alias'];

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$this->options['separator'] = '/';

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if (is_null($this->options['syncChkAsTs'])) {

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$this->options['syncChkAsTs'] = true;

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}

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return $this->needOnline? $this->connect() : true;

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}

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/**

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* Configure after successfull mount.

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*

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* @return void

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* @throws elFinderAbortException

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* @author Dmitry (dio) Levashov

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*/

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protected function configure()

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{

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parent::configure();

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if (!$this->tmp) {

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$this->disabled[] = 'mkfile';

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$this->disabled[] = 'paste';

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$this->disabled[] = 'upload';

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$this->disabled[] = 'edit';

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//$this->disabled[] = 'archive';

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//$this->disabled[] = 'extract';

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}

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$this->disabled[] = 'archive';

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$this->disabled[] = 'extract';

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}

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/**

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* Connect to sftp server

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*

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* @return bool

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* @author sitecode

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**/

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protected function connect()

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{

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//use ca

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if ($this->options['connectCallback']) {

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$this->connect = $this->options['connectCallback']($this->options);

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if (!$this->connect || !$this->connect->isConnected()) {

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return $this->setError('Unable to connect successfully');

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}

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return true;

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}

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try{

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$host = $this->options['host'] . ($this->options['port'] != 22 ? ':' . $this->options['port'] : '');

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$this->connect = new Net_SFTP($host);

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//TODO check fingerprint before login, fail if no match to last time

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if (!$this->connect->login($this->options['user'], $this->options['pass'])) {

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return $this->setError('Unable to connect to SFTP server ' . $host);

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}

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} catch (Exception $e) {

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return $this->setError('Error while connecting to SFTP server ' . $host . ': ' . $e->getMessage());

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}

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if (!$this->connect->chdir($this->root)

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/*|| $this->root != $this->connect->pwd()*/) {

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//$this->umount();

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return $this->setError('Unable to open root folder.');

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}

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return true;

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}

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/**

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* Call rawlist

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*

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* @param string $path

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*

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* @return array

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*/

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protected function ftpRawList($path)

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{

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return $this->connect->rawlist($path ?: '.') ?: [];

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}

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/*********************************************************************/

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/* FS API */

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/*********************************************************************/

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/**

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* Close opened connection

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*

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* @return void

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* @author Dmitry (dio) Levashov

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**/

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public function umount()

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{

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$this->connect && $this->connect->disconnect();

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}

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/**

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* Parse line from rawlist() output and return file stat (array)

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*

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* @param array $info from rawlist() output

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* @param $base

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* @param bool $nameOnly

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*

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* @return array

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* @author Dmitry Levashov

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*/

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protected function parseRaw($info, $base, $nameOnly = false)

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{

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$stat = array();

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if ($info['filename'] == '.' || $info['filename'] == '..') {

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return false;

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}

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$name = $info['filename'];

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if ($info['type'] === 3) {

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// check recursive processing

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if ($this->cacheDirTarget && $this->_joinPath($base, $name) !== $this->cacheDirTarget) {

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return array();

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}

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if (!$nameOnly) {

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$target = $this->connect->readlink($name);

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if (substr($target, 0, 1) !== $this->separator) {

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$target = $this->getFullPath($target, $base);

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}

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$target = $this->_normpath($target);

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$stat['name'] = $name;

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$stat['target'] = $target;

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return $stat;

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}

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}

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if ($nameOnly) {

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return array('name' => $name);

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}

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$stat['ts'] = $info['mtime'];

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if ($this->options['statOwner']) {

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$stat['owner'] = $info['uid'];

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$stat['group'] = $info['gid'];

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$stat['perm'] = $info['permissions'];

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$stat['isowner'] = isset($stat['owner']) ? ($this->options['owner'] ? true : ($stat['owner'] == $this->options['user'])) : true;

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}

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$owner_computed = isset($stat['isowner']) ? $stat['isowner'] : $this->options['owner'];

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$perm = $this->parsePermissions($info['permissions'], $owner_computed);

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$stat['name'] = $name;

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if ($info['type'] === NET_SFTP_TYPE_DIRECTORY) {

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$stat['mime'] = 'directory';

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$stat['size'] = 0;

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} elseif ($info['type'] === NET_SFTP_TYPE_SYMLINK) {

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$stat['mime'] = 'symlink';

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$stat['size'] = 0;

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} else {

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$stat['mime'] = $this->mimetype($stat['name'], true);

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$stat['size'] = $info['size'];

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}

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$stat['read'] = $perm['read'];

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$stat['write'] = $perm['write'];

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return $stat;

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}

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/**

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* Parse permissions string. Return array(read => true/false, write => true/false)

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*

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* @param int $perm

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* The isowner parameter is computed by the caller.

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* If the owner parameter in the options is true, the user is the actual owner of all objects even if the user used in the ftp Login

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* is different from the file owner id.

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* If the owner parameter is false to understand if the user is the file owner we compare the ftp user with the file owner id.

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* @param Boolean $isowner . Tell if the current user is the owner of the object.

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*

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* @return array

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* @author Dmitry (dio) Levashov

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* @author sitecode

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*/

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protected function parsePermissions($permissions, $isowner = true)

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{

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$permissions = decoct($permissions);

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$perm = $isowner ? decbin($permissions[-3]) : decbin($permissions[-1]);

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return array(

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'read' => $perm[-3],

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'write' => $perm[-2]

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);

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}

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[316] Fix | Delete

/**

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* Cache dir contents

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*

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* @param string $path dir path

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*

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* @return void

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* @author Dmitry Levashov, sitecode

[323] Fix | Delete

**/

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protected function cacheDir($path)

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{

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$this->dirsCache[$path] = array();

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$hasDir = false;

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$list = array();

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$encPath = $this->convEncIn($path);

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foreach ($this->ftpRawList($encPath) as $info) {

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if (($stat = $this->parseRaw($info, $encPath))) {

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$list[] = $stat;

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}

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}

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$list = $this->convEncOut($list);

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$prefix = ($path === $this->separator) ? $this->separator : $path . $this->separator;

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$targets = array();

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foreach ($list as $stat) {

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$p = $prefix . $stat['name'];

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if (isset($stat['target'])) {

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// stat later

[343] Fix | Delete

$targets[$stat['name']] = $stat['target'];

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} else {

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$stat = $this->updateCache($p, $stat);

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if (empty($stat['hidden'])) {

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if (!$hasDir && $stat['mime'] === 'directory') {

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$hasDir = true;

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} elseif (!$hasDir && $stat['mime'] === 'symlink') {

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$hasDir = true;

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}

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$this->dirsCache[$path][] = $p;

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}

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}

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}

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// stat link targets

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foreach ($targets as $name => $target) {

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$stat = array();

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$stat['name'] = $name;

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$p = $prefix . $name;

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$cacheDirTarget = $this->cacheDirTarget;

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$this->cacheDirTarget = $this->convEncIn($target, true);

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if ($tstat = $this->stat($target)) {

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$stat['size'] = $tstat['size'];

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$stat['alias'] = $target;

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$stat['thash'] = $tstat['hash'];

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$stat['mime'] = $tstat['mime'];

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$stat['read'] = $tstat['read'];

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$stat['write'] = $tstat['write'];

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[371] Fix | Delete

if (isset($tstat['ts'])) {

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$stat['ts'] = $tstat['ts'];

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}

[374] Fix | Delete

if (isset($tstat['owner'])) {

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$stat['owner'] = $tstat['owner'];

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}

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if (isset($tstat['group'])) {

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$stat['group'] = $tstat['group'];

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}

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if (isset($tstat['perm'])) {

[381] Fix | Delete

$stat['perm'] = $tstat['perm'];

[382] Fix | Delete

}

[383] Fix | Delete

if (isset($tstat['isowner'])) {

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$stat['isowner'] = $tstat['isowner'];

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}

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} else {

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$stat['mime'] = 'symlink-broken';

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$stat['read'] = false;

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$stat['write'] = false;

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$stat['size'] = 0;

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[393] Fix | Delete

}

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$this->cacheDirTarget = $cacheDirTarget;

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$stat = $this->updateCache($p, $stat);

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if (empty($stat['hidden'])) {

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if (!$hasDir && $stat['mime'] === 'directory') {

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$hasDir = true;

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}

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$this->dirsCache[$path][] = $p;

[401] Fix | Delete

}

[402] Fix | Delete

}

[403] Fix | Delete

[404] Fix | Delete

if (isset($this->sessionCache['subdirs'])) {

[405] Fix | Delete

$this->sessionCache['subdirs'][$path] = $hasDir;

[406] Fix | Delete

}

[407] Fix | Delete

}

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[410] Fix | Delete

/***************** file stat ********************/

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/**

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* Return stat for given path.

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* Stat contains following fields:

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* - (int) size file size in b. required

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* - (int) ts file modification time in unix time. required

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* - (string) mime mimetype. required for folders, others - optionally

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* - (bool) read read permissions. required

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* - (bool) write write permissions. required

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* - (bool) locked is object locked. optionally

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* - (bool) hidden is object hidden. optionally

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* - (string) alias for symlinks - link target path relative to root path. optionally

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* - (string) target for symlinks - link target path. optionally

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* If file does not exists - returns empty array or false.

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*

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* @param string $path file path

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*

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* @return array|false

[429] Fix | Delete

* @author Dmitry (dio) Levashov

[430] Fix | Delete

**/

[431] Fix | Delete

protected function _stat($path)

[432] Fix | Delete

{

[433] Fix | Delete

$outPath = $this->convEncOut($path);

[434] Fix | Delete

if (isset($this->cache[$outPath])) {

[435] Fix | Delete

return $this->convEncIn($this->cache[$outPath]);

[436] Fix | Delete

} else {

[437] Fix | Delete

$this->convEncIn();

[438] Fix | Delete

}

[439] Fix | Delete

if ($path === $this->root) {

[440] Fix | Delete

$res = array(

[441] Fix | Delete

'name' => $this->root,

[442] Fix | Delete

'mime' => 'directory',

[443] Fix | Delete

'dirs' => -1

[444] Fix | Delete

);

[445] Fix | Delete

if ($this->needOnline && (($this->ARGS['cmd'] === 'open' && $this->ARGS['target'] === $this->encode($this->root)) || $this->isMyReload())) {

[446] Fix | Delete

$check = array(

[447] Fix | Delete

'ts' => true,

[448] Fix | Delete

'dirs' => true,

[449] Fix | Delete

);

[450] Fix | Delete

$ts = 0;

[451] Fix | Delete

foreach ($this->ftpRawList($path) as $info) {

[452] Fix | Delete

if ($info['filename'] === '.') {

[453] Fix | Delete

$info['filename'] = 'root';

[454] Fix | Delete

if ($stat = $this->parseRaw($info, $path)) {

[455] Fix | Delete

unset($stat['name']);

[456] Fix | Delete

$res = array_merge($res, $stat);

[457] Fix | Delete

if ($res['ts']) {

[458] Fix | Delete

$ts = 0;

[459] Fix | Delete

unset($check['ts']);

[460] Fix | Delete

}

[461] Fix | Delete

}

[462] Fix | Delete

}

[463] Fix | Delete

if ($check && ($stat = $this->parseRaw($info, $path))) {

[464] Fix | Delete

if (isset($stat['ts']) && !empty($stat['ts'])) {

[465] Fix | Delete

$ts = max($ts, $stat['ts']);

[466] Fix | Delete

}

[467] Fix | Delete

if (isset($stat['dirs']) && $stat['mime'] === 'directory') {

[468] Fix | Delete

$res['dirs'] = 1;

[469] Fix | Delete

unset($stat['dirs']);

[470] Fix | Delete

}

[471] Fix | Delete

if (!$check) {

[472] Fix | Delete

break;

[473] Fix | Delete

}

[474] Fix | Delete

}

[475] Fix | Delete

}

[476] Fix | Delete

if ($ts) {

[477] Fix | Delete

$res['ts'] = $ts;

[478] Fix | Delete

}

[479] Fix | Delete

$this->cache[$outPath] = $res;

[480] Fix | Delete

}

[481] Fix | Delete

return $res;

[482] Fix | Delete

}

[483] Fix | Delete

[484] Fix | Delete

$pPath = $this->_dirname($path);

[485] Fix | Delete

if ($this->_inPath($pPath, $this->root)) {

[486] Fix | Delete

$outPPpath = $this->convEncOut($pPath);

[487] Fix | Delete

if (!isset($this->dirsCache[$outPPpath])) {

[488] Fix | Delete

$parentSubdirs = null;

[489] Fix | Delete

if (isset($this->sessionCache['subdirs']) && isset($this->sessionCache['subdirs'][$outPPpath])) {

[490] Fix | Delete

$parentSubdirs = $this->sessionCache['subdirs'][$outPPpath];

[491] Fix | Delete

}

[492] Fix | Delete

$this->cacheDir($outPPpath);

[493] Fix | Delete

if ($parentSubdirs) {

[494] Fix | Delete

$this->sessionCache['subdirs'][$outPPpath] = $parentSubdirs;

[495] Fix | Delete

}

[496] Fix | Delete

}

[497] Fix | Delete

}

[498] Fix | Delete

[499] Fix | Delete