<form method="POST">
    <h3>Editing: elFinderVolumeDropbox.class.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php

elFinder::$netDrivers['dropbox'] = 'Dropbox';

/**
 * Simple elFinder driver for FTP
 *
 * @author Dmitry (dio) Levashov
 * @author Cem (discofever)
 **/
class elFinderVolumeDropbox extends elFinderVolumeDriver {

	/**
	 * Driver id
	 * Must be started from letter and contains [a-z0-9]
	 * Used as part of volume id
	 *
	 * @var string
	 **/
	protected $driverId = 'd';

	/**
	 * OAuth object
	 *
	 * @var oauth
	 **/
	protected $oauth = null;

	/**
	 * Dropbox object
	 *
	 * @var dropbox
	 **/
	protected $dropbox = null;

	/**
	 * Directory for meta data caches
	 * If not set driver not cache meta data
	 *
	 * @var string
	 **/
	protected $metaCache = '';

	/**
	 * Last API error message
	 *
	 * @var string
	 **/
	protected $apiError = '';

	/**
	 * Directory for tmp files
	 * If not set driver will try to use tmbDir as tmpDir
	 *
	 * @var string
	 **/
	protected $tmp = '';
	
	/**
	 * Dropbox.com uid
	 *
	 * @var string
	 **/
	protected $dropboxUid = '';
	
	/**
	 * Dropbox download host, replaces 'www.dropbox.com' of shares URL
	 * 
	 * @var string
	 */
	private $dropbox_dlhost = 'dl.dropboxusercontent.com';
	
	private $dropbox_phpFound = false;
	
	private $DB_TableName = '';
	
	private $tmbPrefix = '';

	/**
	 * Constructor
	 * Extend options with required fields
	 *
	 * @author Dmitry (dio) Levashov
	 * @author Cem (DiscoFever)
	 */
	public function __construct() {

		// check with composer
		$this-&gt;dropbox_phpFound = class_exists('Dropbox_API');
		
		if (! $this-&gt;dropbox_phpFound) {
			// check with pear
			if (include_once 'Dropbox/autoload.php') {
				$this-&gt;dropbox_phpFound = in_array('Dropbox_autoload', spl_autoload_functions());
			}
		}
		
		$opts = array(
			'consumerKey'       =&gt; '',
			'consumerSecret'    =&gt; '',
			'accessToken'       =&gt; '',
			'accessTokenSecret' =&gt; '',
			'dropboxUid'        =&gt; '',
			'root'              =&gt; 'dropbox',
			'path'              =&gt; '/',
			'separator'         =&gt; '/',
			'PDO_DSN'           =&gt; '', // if empty use 'sqlite:(metaCachePath|tmbPath)/elFinder_dropbox_db_(hash:dropboxUid+consumerSecret)'
			'PDO_User'          =&gt; '',
			'PDO_Pass'          =&gt; '',
			'PDO_Options'       =&gt; array(),
			'PDO_DBName'        =&gt; 'dropbox',
			'treeDeep'          =&gt; 0,
			'tmbPath'           =&gt; '',
			'tmbURL'            =&gt; '',
			'tmpPath'           =&gt; '',
			'getTmbSize'        =&gt; 'large', // small: 32x32, medium or s: 64x64, large or m: 128x128, l: 640x480, xl: 1024x768
			'metaCachePath'     =&gt; '',
			'metaCacheTime'     =&gt; '600', // 10m
			'acceptedName'      =&gt; '#^[^/\\?*:|&quot;&lt;&gt;]*[^./\\?*:|&quot;&lt;&gt;]$#',
			'rootCssClass'      =&gt; 'elfinder-navbar-root-dropbox'
		);
		$this-&gt;options = array_merge($this-&gt;options, $opts);
		$this-&gt;options['mimeDetect'] = 'internal';
	}

	/**
	 * Prepare
	 * Call from elFinder::netmout() before volume-&gt;mount()
	 *
	 * @param $options
	 * @return Array
	 * @author Naoki Sawada
	 */
	public function netmountPrepare($options) {
		if (empty($options['consumerKey']) &amp;&amp; defined('ELFINDER_DROPBOX_CONSUMERKEY')) $options['consumerKey'] = ELFINDER_DROPBOX_CONSUMERKEY;
		if (empty($options['consumerSecret']) &amp;&amp; defined('ELFINDER_DROPBOX_CONSUMERSECRET')) $options['consumerSecret'] = ELFINDER_DROPBOX_CONSUMERSECRET;
		
		if ($options['user'] === 'init') {

			if (! $this-&gt;dropbox_phpFound || empty($options['consumerKey']) || empty($options['consumerSecret']) || !class_exists('PDO', false)) {
				return array('exit' =&gt; true, 'body' =&gt; '{msg:errNetMountNoDriver}');
			}
			
			if (defined('ELFINDER_DROPBOX_USE_CURL_PUT')) {
				$this-&gt;oauth = new Dropbox_OAuth_Curl($options['consumerKey'], $options['consumerSecret']);
			} else {
				if (class_exists('OAuth', false)) {
					$this-&gt;oauth = new Dropbox_OAuth_PHP($options['consumerKey'], $options['consumerSecret']);
				} else {
					if (! class_exists('HTTP_OAuth_Consumer')) {
						// We're going to try to load in manually
						include 'HTTP/OAuth/Consumer.php';
					}
					if (class_exists('HTTP_OAuth_Consumer', false)) {
						$this-&gt;oauth = new Dropbox_OAuth_PEAR($options['consumerKey'], $options['consumerSecret']);
					}
				}
			}
			
			if (! $this-&gt;oauth) {
				return array('exit' =&gt; true, 'body' =&gt; '{msg:errNetMountNoDriver}');
			}

			if ($options['pass'] === 'init') {
				$html = '';
				if ($sessionToken = $this-&gt;session-&gt;get('DropboxTokens')) {
					// token check
					try {
						list(, $accessToken, $accessTokenSecret) = $sessionToken;
						$this-&gt;oauth-&gt;setToken($accessToken, $accessTokenSecret);
						$this-&gt;dropbox = new Dropbox_API($this-&gt;oauth, $this-&gt;options['root']);
						$this-&gt;dropbox-&gt;getAccountInfo();
						$script = '&lt;script&gt;
							jQuery(&quot;#'.$options['id'].'&quot;).elfinder(&quot;instance&quot;).trigger(&quot;netmount&quot;, {protocol: &quot;dropbox&quot;, mode: &quot;done&quot;});
						&lt;/script&gt;';
						$html = $script;
					} catch (Dropbox_Exception $e) {
						$this-&gt;session-&gt;remove('DropboxTokens');
					}
				}
				if (! $html) {
					// get customdata
					$cdata = '';
					$innerKeys = array('cmd', 'host', 'options', 'pass', 'protocol', 'user');
					$this-&gt;ARGS = $_SERVER['REQUEST_METHOD'] === 'POST'? $_POST : $_GET;
					foreach($this-&gt;ARGS as $k =&gt; $v) {
						if (! in_array($k, $innerKeys)) {
							$cdata .= '&amp;' . $k . '=' . rawurlencode($v);
						}
					}
					if (strpos($options['url'], 'http') !== 0 ) {
						$options['url'] = elFinder::getConnectorUrl();
					}
					$callback  = $options['url']
					           . '?cmd=netmount&amp;protocol=dropbox&amp;host=dropbox.com&amp;user=init&amp;pass=return&amp;node='.$options['id'].$cdata;
					
					try {
						$tokens = $this-&gt;oauth-&gt;getRequestToken();
						$url= $this-&gt;oauth-&gt;getAuthorizeUrl(rawurlencode($callback));
					} catch (Dropbox_Exception $e) {
						return array('exit' =&gt; true, 'body' =&gt; '{msg:errAccess}');
					}
					
					$this-&gt;session-&gt;set('DropboxAuthTokens', $tokens);
					$html = '&lt;input id=&quot;elf-volumedriver-dropbox-host-btn&quot; class=&quot;ui-button ui-widget ui-state-default ui-corner-all ui-button-text-only&quot; value=&quot;{msg:btnApprove}&quot; type=&quot;button&quot; onclick=&quot;window.open(\''.$url.'\')&quot;&gt;';
					$html .= '&lt;script&gt;
						jQuery(&quot;#'.$options['id'].'&quot;).elfinder(&quot;instance&quot;).trigger(&quot;netmount&quot;, {protocol: &quot;dropbox&quot;, mode: &quot;makebtn&quot;});
					&lt;/script&gt;';
				}
				return array('exit' =&gt; true, 'body' =&gt; $html);
			} else {
				$this-&gt;oauth-&gt;setToken($this-&gt;session-&gt;get('DropboxAuthTokens'));
				$this-&gt;session-&gt;remove('DropboxAuthTokens');
				$tokens = $this-&gt;oauth-&gt;getAccessToken();
				$this-&gt;session-&gt;set('DropboxTokens', array($_GET['uid'], $tokens['token'], $tokens['token_secret']));
				
				$out = array(
					'node' =&gt; $_GET['node'],
					'json' =&gt; '{&quot;protocol&quot;: &quot;dropbox&quot;, &quot;mode&quot;: &quot;done&quot;}',
					'bind' =&gt; 'netmount'
				);
				
				return array('exit' =&gt; 'callback', 'out' =&gt; $out);
			}
		}
		if ($sessionToken = $this-&gt;session-&gt;get('DropboxTokens')) {
			list($options['dropboxUid'], $options['accessToken'], $options['accessTokenSecret']) = $sessionToken;
		}
		unset($options['user'], $options['pass']);
		return $options;
	}

	/**
	 * process of on netunmount
	 * Drop table `dropbox` &amp; rm thumbs
	 *
	 * @param $netVolumes
	 * @param $key
	 * @return bool
	 * @internal param array $options
	 */
	public function netunmount($netVolumes, $key) {
		$count = 0;
		$dropboxUid = '';
		if (isset($netVolumes[$key])) {
			$dropboxUid = $netVolumes[$key]['dropboxUid'];
		}
		foreach($netVolumes as $volume) {
			if ($volume['host'] === 'dropbox' &amp;&amp; $volume['dropboxUid'] === $dropboxUid) {
				$count++;
			}
		}
		if ($count === 1) {
			$this-&gt;DB-&gt;exec('drop table '.$this-&gt;DB_TableName);
			foreach(glob(rtrim($this-&gt;options['tmbPath'], '\\/').DIRECTORY_SEPARATOR.$this-&gt;tmbPrefix.'*.png') as $tmb) {
				unlink($tmb);
			}
		}
		return true;
	}
	
	/*********************************************************************/
	/*                        INIT AND CONFIGURE                         */
	/*********************************************************************/

	/**
	 * Prepare FTP connection
	 * Connect to remote server and check if credentials are correct, if so, store the connection id in $ftp_conn
	 *
	 * @return bool
	 * @author Dmitry (dio) Levashov
	 * @author Cem (DiscoFever)
	 **/
	protected function init() {
		if (!class_exists('PDO', false)) {
			return $this-&gt;setError('PHP PDO class is require.');
		}
		
		if (!$this-&gt;options['consumerKey']
		||  !$this-&gt;options['consumerSecret']
		||  !$this-&gt;options['accessToken']
		||  !$this-&gt;options['accessTokenSecret']) {
			return $this-&gt;setError('Required options undefined.');
		}
		
		if (empty($this-&gt;options['metaCachePath']) &amp;&amp; defined('ELFINDER_DROPBOX_META_CACHE_PATH')) {
			$this-&gt;options['metaCachePath'] = ELFINDER_DROPBOX_META_CACHE_PATH;
		}
		
		// make net mount key
		$this-&gt;netMountKey = md5(join('-', array('dropbox', $this-&gt;options['path'])));

		if (! $this-&gt;oauth) {
			if (defined('ELFINDER_DROPBOX_USE_CURL_PUT')) {
				$this-&gt;oauth = new Dropbox_OAuth_Curl($this-&gt;options['consumerKey'], $this-&gt;options['consumerSecret']);
			} else {
				if (class_exists('OAuth', false)) {
					$this-&gt;oauth = new Dropbox_OAuth_PHP($this-&gt;options['consumerKey'], $this-&gt;options['consumerSecret']);
				} else {
					if (! class_exists('HTTP_OAuth_Consumer')) {
						// We're going to try to load in manually
						include 'HTTP/OAuth/Consumer.php';
					}
					if (class_exists('HTTP_OAuth_Consumer', false)) {
						$this-&gt;oauth = new Dropbox_OAuth_PEAR($this-&gt;options['consumerKey'], $this-&gt;options['consumerSecret']);
					}
				}
			}
		}
		
		if (! $this-&gt;oauth) {
			return $this-&gt;setError('OAuth extension not loaded.');
		}

		// normalize root path
		$this-&gt;root = $this-&gt;options['path'] = $this-&gt;_normpath($this-&gt;options['path']);

		if (empty($this-&gt;options['alias'])) {
			$this-&gt;options['alias'] = ($this-&gt;options['path'] === '/')? 'Dropbox.com'  : 'Dropbox'.$this-&gt;options['path'];
		}

		$this-&gt;rootName = $this-&gt;options['alias'];

		try {
			$this-&gt;oauth-&gt;setToken($this-&gt;options['accessToken'], $this-&gt;options['accessTokenSecret']);
			$this-&gt;dropbox = new Dropbox_API($this-&gt;oauth, $this-&gt;options['root']);
		} catch (Dropbox_Exception $e) {
			$this-&gt;session-&gt;remove('DropboxTokens');
			return $this-&gt;setError('Dropbox error: '.$e-&gt;getMessage());
		}
		
		// user
		if (empty($this-&gt;options['dropboxUid'])) {
			try {
				$res = $this-&gt;dropbox-&gt;getAccountInfo();
				$this-&gt;options['dropboxUid'] = $res['uid'];
			} catch (Dropbox_Exception $e) {
				$this-&gt;session-&gt;remove('DropboxTokens');
				return $this-&gt;setError('Dropbox error: '.$e-&gt;getMessage());
			}
		}
		
		$this-&gt;dropboxUid = $this-&gt;options['dropboxUid'];
		$this-&gt;tmbPrefix = 'dropbox'.base_convert($this-&gt;dropboxUid, 10, 32);

		if (!empty($this-&gt;options['tmpPath'])) {
			if ((is_dir($this-&gt;options['tmpPath']) || mkdir($this-&gt;options['tmpPath'])) &amp;&amp; is_writable($this-&gt;options['tmpPath'])) {
				$this-&gt;tmp = $this-&gt;options['tmpPath'];
			}
		}
		if (!$this-&gt;tmp &amp;&amp; is_writable($this-&gt;options['tmbPath'])) {
			$this-&gt;tmp = $this-&gt;options['tmbPath'];
		}
		if (!$this-&gt;tmp &amp;&amp; ($tmp = elFinder::getStaticVar('commonTempPath'))) {
			$this-&gt;tmp = $tmp;
		}
		
		if (!empty($this-&gt;options['metaCachePath'])) {
			if ((is_dir($this-&gt;options['metaCachePath']) || mkdir($this-&gt;options['metaCachePath'])) &amp;&amp; is_writable($this-&gt;options['metaCachePath'])) {
				$this-&gt;metaCache = $this-&gt;options['metaCachePath'];
			}
		}
		if (!$this-&gt;metaCache &amp;&amp; $this-&gt;tmp) {
			$this-&gt;metaCache = $this-&gt;tmp;
		}
		
		if (!$this-&gt;metaCache) {
			return $this-&gt;setError('Cache dirctory (metaCachePath or tmp) is require.');
		}
		
		// setup PDO
		if (! $this-&gt;options['PDO_DSN']) {
			$this-&gt;options['PDO_DSN'] = 'sqlite:'.$this-&gt;metaCache.DIRECTORY_SEPARATOR.'.elFinder_dropbox_db_'.md5($this-&gt;dropboxUid.$this-&gt;options['consumerSecret']);
		}
		// DataBase table name
		$this-&gt;DB_TableName = $this-&gt;options['PDO_DBName'];
		// DataBase check or make table
		try {
			$this-&gt;DB = new PDO($this-&gt;options['PDO_DSN'], $this-&gt;options['PDO_User'], $this-&gt;options['PDO_Pass'], $this-&gt;options['PDO_Options']);
			if (! $this-&gt;checkDB()) {
				return $this-&gt;setError('Can not make DB table');
			}
		} catch (PDOException $e) {
			return $this-&gt;setError('PDO connection failed: '.$e-&gt;getMessage());
		}
		
		$res = $this-&gt;deltaCheck($this-&gt;isMyReload());
		if ($res !== true) {
			if (is_string($res)) {
				return $this-&gt;setError($res);
			} else {
				return $this-&gt;setError('Could not check API &quot;delta&quot;');
			}
		}
		
		if (is_null($this-&gt;options['syncChkAsTs'])) {
			$this-&gt;options['syncChkAsTs'] = true;
		}
		if ($this-&gt;options['syncChkAsTs']) {
			// 'tsPlSleep' minmum 5 sec
			$this-&gt;options['tsPlSleep'] = max(5, $this-&gt;options['tsPlSleep']);
		} else {
			// 'lsPlSleep' minmum 10 sec
			$this-&gt;options['lsPlSleep'] = max(10, $this-&gt;options['lsPlSleep']);
		}
		
		return true;
	}


	/**
	 * Configure after successful mount.
	 *
	 * @return string
	 * @author Dmitry (dio) Levashov
	 **/
	protected function configure() {
		parent::configure();
		
		$this-&gt;disabled[] = 'archive';
		$this-&gt;disabled[] = 'extract';
	}
	
	/**
	 * Check DB for delta cache
	 * 
	 * @return bool
	 */
	private function checkDB() {
		$res = $this-&gt;query('SELECT * FROM sqlite_master WHERE type=\'table\' AND name=\''.$this-&gt;DB_TableName.'\'');
		if ($res &amp;&amp; isset($_REQUEST['init'])) {
			// check is index(nameidx) UNIQUE?
			$chk = $this-&gt;query('SELECT sql FROM sqlite_master WHERE type=\'index\' and name=\'nameidx\'');
			if (!$chk || strpos(strtoupper($chk[0]), 'UNIQUE') === false) {
				// remake
				$this-&gt;DB-&gt;exec('DROP TABLE '.$this-&gt;DB_TableName);
				$res = false;
			}
		}
		if (! $res) {
			try {
				$this-&gt;DB-&gt;exec('CREATE TABLE '.$this-&gt;DB_TableName.'(path text, fname text, dat blob, isdir integer);');
				$this-&gt;DB-&gt;exec('CREATE UNIQUE INDEX nameidx ON '.$this-&gt;DB_TableName.'(path, fname)');
				$this-&gt;DB-&gt;exec('CREATE INDEX isdiridx ON '.$this-&gt;DB_TableName.'(isdir)');
			} catch (PDOException $e) {
				return $this-&gt;setError($e-&gt;getMessage());
			}
		}
		return true;
	}
	
	/**
	 * DB query and fetchAll
	 * 
	 * @param string $sql
	 * @return boolean|array
	 */
	private function query($sql) {
		if ($sth = $this-&gt;DB-&gt;query($sql)) {
			$res = $sth-&gt;fetchAll(PDO::FETCH_COLUMN);
		} else {
			$res = false;
		}
		return $res;
	}
	
	/**
	 * Get dat(dropbox metadata) from DB
	 * 
	 * @param string $path
	 * @return array dropbox metadata
	 */
	private function getDBdat($path) {
		if ($res = $this-&gt;query('select dat from '.$this-&gt;DB_TableName.' where path='.$this-&gt;DB-&gt;quote(strtolower($this-&gt;_dirname($path))).' and fname='.$this-&gt;DB-&gt;quote(strtolower($this-&gt;_basename($path))).' limit 1')) {
			return unserialize($res[0]);
		} else {
			return array();
		}
	}
	
	/**
	 * Update DB dat(dropbox metadata)
	 * 
	 * @param string $path
	 * @param array $dat
	 * @return bool|array
	 */
	private function updateDBdat($path, $dat) {
		return $this-&gt;query('update '.$this-&gt;DB_TableName.' set dat='.$this-&gt;DB-&gt;quote(serialize($dat))
				. ', isdir=' . ($dat['is_dir']? 1 : 0)
				. ' where path='.$this-&gt;DB-&gt;quote(strtolower($this-&gt;_dirname($path))).' and fname='.$this-&gt;DB-&gt;quote(strtolower($this-&gt;_basename($path))));
	}
	/*********************************************************************/
	/*                               FS API                              */
	/*********************************************************************/

	/**
	 * Close opened connection
	 *
	 * @return void
	 * @author Dmitry (dio) Levashov
	 **/
	public function umount() {

	}
	
	/**
	 * Get delta data and DB update
	 * 
	 * @param boolean $refresh force refresh
	 * @return true|string error message
	 */
	protected function deltaCheck($refresh = true) {
		$chk = false;
		if (! $refresh &amp;&amp; $chk = $this-&gt;query('select dat from '.$this-&gt;DB_TableName.' where path=\'\' and fname=\'\' limit 1')) {
			$chk = unserialize($chk[0]);
		}
		if ($chk &amp;&amp; ($chk['mtime'] + $this-&gt;options['metaCacheTime']) &gt; $_SERVER['REQUEST_TIME']) {
			return true;
		}
		
		try {
			$more = true;
			$this-&gt;DB-&gt;beginTransaction();
			
			if ($res = $this-&gt;query('select dat from '.$this-&gt;DB_TableName.' where path=\'\' and fname=\'\' limit 1')) {
				$res = unserialize($res[0]);
				$cursor = $res['cursor'];
			} else {
				$cursor = '';
			}
			$delete = false;
			$reset = false;
			$ptimes = array();
			$now = time();
			do {
				 ini_set('max_execution_time', 120);
				$_info = $this-&gt;dropbox-&gt;delta($cursor);
				if (! empty($_info['reset'])) {
					$this-&gt;DB-&gt;exec('TRUNCATE table '.$this-&gt;DB_TableName);
					$this-&gt;DB-&gt;exec('insert into '.$this-&gt;DB_TableName.' values(\'\', \'\', \''.serialize(array('cursor' =&gt; '', 'mtime' =&gt; 0)).'\', 0);');
					$this-&gt;DB-&gt;exec('insert into '.$this-&gt;DB_TableName.' values(\'/\', \'\', \''.serialize(array(
						'path'      =&gt; '/',
						'is_dir'    =&gt; 1,
						'mime_type' =&gt; '',
						'bytes'     =&gt; 0
					)).'\', 0);');
					$reset = true;
				}
				$cursor = $_info['cursor'];
				
				foreach($_info['entries'] as $entry) {
					$key = strtolower($entry[0]);
					$pkey = strtolower($this-&gt;_dirname($key));
					
					$path = $this-&gt;DB-&gt;quote($pkey);
					$fname = $this-&gt;DB-&gt;quote(strtolower($this-&gt;_basename($key)));
					$where = 'where path='.$path.' and fname='.$fname;
					
					if (empty($entry[1])) {
						$ptimes[$pkey] = isset($ptimes[$pkey])? max(array($now, $ptimes[$pkey])) : $now;
						$this-&gt;DB-&gt;exec('delete from '.$this-&gt;DB_TableName.' '.$where);
						! $delete &amp;&amp; $delete = true;
						continue;
					}

					$_itemTime = strtotime(isset($entry[1]['client_mtime'])? $entry[1]['client_mtime'] : $entry[1]['modified']);
					$ptimes[$pkey] = isset($ptimes[$pkey])? max(array($_itemTime, $ptimes[$pkey])) : $_itemTime;
					$sql = 'select path from '.$this-&gt;DB_TableName.' '.$where.' limit 1';
					if (! $reset &amp;&amp; $this-&gt;query($sql)) {
						$this-&gt;DB-&gt;exec('update '.$this-&gt;DB_TableName.' set dat='.$this-&gt;DB-&gt;quote(serialize($entry[1])).', isdir='.($entry[1]['is_dir']? 1 : 0).' ' .$where);
					} else {
						$this-&gt;DB-&gt;exec('insert into '.$this-&gt;DB_TableName.' values ('.$path.', '.$fname.', '.$this-&gt;DB-&gt;quote(serialize($entry[1])).', '.(int)$entry[1]['is_dir'].')');
					}
				}
			} while (! empty($_info['has_more']));
			
			// update time stamp of parent holder
			foreach ($ptimes as $_p =&gt; $_t) {
				if ($praw = $this-&gt;getDBdat($_p)) {
					$_update = false;
					if (isset($praw['client_mtime']) &amp;&amp; $_t &gt; strtotime($praw['client_mtime'])) {
						$praw['client_mtime'] = date('r', $_t);
						$_update = true;
					}
					if (isset($praw['modified']) &amp;&amp; $_t &gt; strtotime($praw['modified'])) {
						$praw['modified'] = date('r', $_t);
						$_update = true;
					}
					if ($_update) {
						$pwhere = 'where path='.$this-&gt;DB-&gt;quote(strtolower($this-&gt;_dirname($_p))).' and fname='.$this-&gt;DB-&gt;quote(strtolower($this-&gt;_basename($_p)));
						$this-&gt;DB-&gt;exec('update '.$this-&gt;DB_TableName.' set dat='.$this-&gt;DB-&gt;quote(serialize($praw)).' '.$pwhere);
					}
				}
			}
			
			$this-&gt;DB-&gt;exec('update '.$this-&gt;DB_TableName.' set dat='.$this-&gt;DB-&gt;quote(serialize(array('cursor'=&gt;$cursor, 'mtime'=&gt;$_SERVER['REQUEST_TIME']))).' where path=\'\' and fname=\'\'');
			if (! $this-&gt;DB-&gt;commit()) {
				$e = $this-&gt;DB-&gt;errorInfo();
				return $e[2];
			}
			if ($delete) {
				$this-&gt;DB-&gt;exec('vacuum');
			}
		} catch(Dropbox_Exception $e) {
			return $e-&gt;getMessage();
		}
		return true;
	}
	
	/**
	 * Parse line from dropbox metadata output and return file stat (array)
	 *
	 * @param  string  $raw  line from ftp_rawlist() output
	 * @return array
	 * @author Dmitry Levashov
	 **/
	protected function parseRaw($raw) {
		$stat = array();

		$stat['rev']   = isset($raw['rev'])? $raw['rev'] : 'root';
		$stat['name']  = $this-&gt;_basename($raw['path']);
		$stat['mime']  = $raw['is_dir']? 'directory' : $raw['mime_type'];
		$stat['size']  = $stat['mime'] == 'directory' ? 0 : $raw['bytes'];
		$stat['ts']    = isset($raw['client_mtime'])? strtotime($raw['client_mtime']) :
		                (isset($raw['modified'])? strtotime($raw['modified']) : $_SERVER['REQUEST_TIME']);
		$stat['dirs'] = 0;
		if ($raw['is_dir']) {
			$stat['dirs'] = (int)(bool)$this-&gt;query('select path from '.$this-&gt;DB_TableName.' where isdir=1 and path='.$this-&gt;DB-&gt;quote(strtolower($raw['path'])));
		}
		
		if (!empty($raw['url'])) {
			$stat['url'] = $raw['url'];
		} else if (! $this-&gt;disabledGetUrl) {
			$stat['url'] = '1';
		}
		if (isset($raw['width'])) $stat['width'] = $raw['width'];
		if (isset($raw['height'])) $stat['height'] = $raw['height'];
		
		return $stat;
	}

	/**
	 * Cache dir contents
	 *
	 * @param  string  $path  dir path
	 * @return string
	 * @author Dmitry Levashov
	 **/
	protected function cacheDir($path) {
		$this-&gt;dirsCache[$path] = array();
		$hasDir = false;
		
		$res = $this-&gt;query('select dat from '.$this-&gt;DB_TableName.' where path='.$this-&gt;DB-&gt;quote(strtolower($path)));
		
		if ($res) {
			foreach($res as $raw) {
				$raw = unserialize($raw);
				if ($stat = $this-&gt;parseRaw($raw)) {
					$stat = $this-&gt;updateCache($raw['path'], $stat);
					if (empty($stat['hidden']) &amp;&amp; $path !== $raw['path']) {
						if (! $hasDir &amp;&amp; $stat['mime'] === 'directory') {
							$hasDir = true;
						}
						$this-&gt;dirsCache[$path][] = $raw['path'];
					}
				}
			}
		}
		
		if (isset($this-&gt;sessionCache['subdirs'])) {
			$this-&gt;sessionCache['subdirs'][$path] = $hasDir;
		}
		
		return $this-&gt;dirsCache[$path];
	}

	/**
	* Recursive files search
	*
	* @param  string  $path   dir path
	* @param  string  $q      search string
	* @param  array   $mimes
	* @return array
	* @author Naoki Sawada
	**/
	protected function doSearch($path, $q, $mimes) {
		$result = array();
		$sth = $this-&gt;DB-&gt;prepare('select dat from '.$this-&gt;DB_TableName.' WHERE path LIKE ? AND fname LIKE ?');
		$sth-&gt;execute(array((($path === '/')? '' : strtolower($path)).'%', '%'.strtolower($q).'%'));
		$res = $sth-&gt;fetchAll(PDO::FETCH_COLUMN);
		$timeout = $this-&gt;options['searchTimeout']? $this-&gt;searchStart + $this-&gt;options['searchTimeout'] : 0;
		
		if ($res) {
			foreach($res as $raw) {
				if ($timeout &amp;&amp; $timeout &lt; time()) {
					$this-&gt;setError(elFinder::ERROR_SEARCH_TIMEOUT, $this-&gt;path($this-&gt;encode($path)));
					break;
				}
				
				$raw = unserialize($raw);
				if ($stat = $this-&gt;parseRaw($raw)) {
					if (!isset($this-&gt;cache[$raw['path']])) {
						$stat = $this-&gt;updateCache($raw['path'], $stat);
					}
					if (!empty($stat['hidden']) || ($mimes &amp;&amp; $stat['mime'] === 'directory') || !$this-&gt;mimeAccepted($stat['mime'], $mimes)) {
						continue;
					}
					$stat = $this-&gt;stat($raw['path']);
					$stat['path'] = $this-&gt;path($stat['hash']);
					$result[] = $stat;
				}
			}
		}
		return $result;
	}
	
	/**
	* Copy file/recursive copy dir only in current volume.
	* Return new file path or false.
	*
	* @param  string  $src   source path
	* @param  string  $dst   destination dir path
	* @param  string  $name  new file name (optionaly)
	* @return string|false
	* @author Dmitry (dio) Levashov
	* @author Naoki Sawada
	**/
	protected function copy($src, $dst, $name) {

		$this-&gt;clearcache();

		return $this-&gt;_copy($src, $dst, $name)
		? $this-&gt;_joinPath($dst, $name)
		: $this-&gt;setError(elFinder::ERROR_COPY, $this-&gt;_path($src));
	}

	/**
	 * Remove file/ recursive remove dir
	 *
	 * @param  string $path file path
	 * @param  bool $force try to remove even if file locked
	 * @param bool $recursive
	 * @return bool
	 * @author Dmitry (dio) Levashov
	 * @author Naoki Sawada
	 */
	protected function remove($path, $force = false, $recursive = false) {
		$stat = $this-&gt;stat($path);
		$stat['realpath'] = $path;
		$this-&gt;rmTmb($stat);
		$this-&gt;clearcache();
	
		if (empty($stat)) {
			return $this-&gt;setError(elFinder::ERROR_RM, $this-&gt;_path($path), elFinder::ERROR_FILE_NOT_FOUND);
		}
	
		if (!$force &amp;&amp; !empty($stat['locked'])) {
			return $this-&gt;setError(elFinder::ERROR_LOCKED, $this-&gt;_path($path));
		}
	
		if ($stat['mime'] == 'directory') {
			if (!$recursive &amp;&amp; !$this-&gt;_rmdir($path)) {
				return $this-&gt;setError(elFinder::ERROR_RM, $this-&gt;_path($path));
			}
		} else {
			if (!$recursive &amp;&amp; !$this-&gt;_unlink($path)) {
				return $this-&gt;setError(elFinder::ERROR_RM, $this-&gt;_path($path));
			}
		}
	
		$this-&gt;removed[] = $stat;
		return true;
	}

	/**
	 * Create thumnbnail and return it's URL on success
	 *
	 * @param  string $path file path
	 * @param $stat
	 * @return false|string
	 * @internal param string $mime file mime type
	 * @author Dmitry (dio) Levashov
	 * @author Naoki Sawada
	 */
	protected function createTmb($path, $stat) {
		if (!$stat || !$this-&gt;canCreateTmb($path, $stat)) {
			return false;
		}
	
		$name = $this-&gt;tmbname($stat);
		$tmb  = $this-&gt;tmbPath.DIRECTORY_SEPARATOR.$name;
	
		// copy image into tmbPath so some drivers does not store files on local fs
		if (! $data = $this-&gt;getThumbnail($path, $this-&gt;options['getTmbSize'])) {
			return false;
		}
		if (! file_put_contents($tmb, $data)) {
			return false;
		}
	
		$result = false;
	
		$tmbSize = $this-&gt;tmbSize;
	
		if (($s = getimagesize($tmb)) == false) {
			return false;
		}
	
		/* If image smaller or equal thumbnail size - just fitting to thumbnail square */
		if ($s[0] &lt;= $tmbSize &amp;&amp; $s[1]  &lt;= $tmbSize) {
			$result = $this-&gt;imgSquareFit($tmb, $tmbSize, $tmbSize, 'center', 'middle', $this-&gt;options['tmbBgColor'], 'png' );
	
		} else {
	
			if ($this-&gt;options['tmbCrop']) {
	
				/* Resize and crop if image bigger than thumbnail */
				if (!(($s[0] &gt; $tmbSize &amp;&amp; $s[1] &lt;= $tmbSize) || ($s[0] &lt;= $tmbSize &amp;&amp; $s[1] &gt; $tmbSize) ) || ($s[0] &gt; $tmbSize &amp;&amp; $s[1] &gt; $tmbSize)) {
					$result = $this-&gt;imgResize($tmb, $tmbSize, $tmbSize, true, false, 'png');
				}
	
				if (($s = getimagesize($tmb)) != false) {
					$x = $s[0] &gt; $tmbSize ? intval(($s[0] - $tmbSize)/2) : 0;
					$y = $s[1] &gt; $tmbSize ? intval(($s[1] - $tmbSize)/2) : 0;
					$result = $this-&gt;imgCrop($tmb, $tmbSize, $tmbSize, $x, $y, 'png');
				}
	
			} else {
				$result = $this-&gt;imgResize($tmb, $tmbSize, $tmbSize, true, true, 'png');
			}
		
			$result = $this-&gt;imgSquareFit($tmb, $tmbSize, $tmbSize, 'center', 'middle', $this-&gt;options['tmbBgColor'], 'png' );
		}
		
		if (!$result) {
			unlink($tmb);
			return false;
		}
	
		return $name;
	}
	
	/**
	 * Return thumbnail file name for required file
	 *
	 * @param  array  $stat  file stat
	 * @return string
	 * @author Dmitry (dio) Levashov
	 **/
	protected function tmbname($stat) {
		return $this-&gt;tmbPrefix.$stat['rev'].'.png';
	}
	
	/**
	 * Get thumbnail from dropbox.com
	 * @param string $path
	 * @param string $size
	 * @return string | boolean
	 */
	protected function getThumbnail($path, $size = 'small') {
		try {
			return $this-&gt;dropbox-&gt;getThumbnail($path, $size);
		} catch (Dropbox_Exception $e) {
			return false;
		}
	}
	
	/**
	* Return content URL
	*
	* @param string  $hash  file hash
	* @param array $options options
	* @return array
	* @author Naoki Sawada
	**/
	public function getContentUrl($hash, $options = array()) {
		if (($file = $this-&gt;file($hash)) == false || !$file['url'] || $file['url'] == 1) {
			$path = $this-&gt;decode($hash);
			$cache = $this-&gt;getDBdat($path);
			$url = '';
			if (isset($cache['share']) &amp;&amp; strpos($cache['share'], $this-&gt;dropbox_dlhost) !== false) {
				$res = $this-&gt;getHttpResponseHeader($cache['share']);
				if (preg_match(&quot;/^HTTP\/[01\.]+ ([0-9]{3})/&quot;, $res, $match)) {
					if ($match[1] &lt; 400) {
						$url = $cache['share'];
					}
				}
			}
			if (! $url) {
				try {
					$res = $this-&gt;dropbox-&gt;share($path, null, false);
					$url = $res['url'];
					if (strpos($url, 'www.dropbox.com') === false) {
						$res = $this-&gt;getHttpResponseHeader($url);
						if (preg_match('/^location:\s*(http[^\s]+)/im', $res, $match)) {
							$url = $match[1];
						}
					}
					list($url) = explode('?', $url);
					$url = str_replace('www.dropbox.com', $this-&gt;dropbox_dlhost, $url);
					if (! isset($cache['share']) || $cache['share'] !== $url) {
						$cache['share'] = $url;
						$this-&gt;updateDBdat($path, $cache);
					}
				} catch (Dropbox_Exception $e) {
					return false;
				}
			}
			return $url;
		}
		return $file['url'];
	}
	
	/**
	 * Get HTTP request response header string
	 * 
	 * @param string $url target URL
	 * @return string
	 * @author Naoki Sawada
	 */
	private function getHttpResponseHeader($url) {
		if (function_exists('curl_exec')) {

			$c = curl_init();
			curl_setopt( $c, CURLOPT_RETURNTRANSFER, true );
			curl_setopt( $c, CURLOPT_CUSTOMREQUEST, 'HEAD' );
			curl_setopt( $c, CURLOPT_HEADER, 1 );
			curl_setopt( $c, CURLOPT_NOBODY, true );
			curl_setopt( $c, CURLOPT_URL, $url );
			$res = curl_exec( $c );
			
		} else {
			
			require_once 'HTTP/Request2.php';
			try {
				$request2 = new HTTP_Request2();
				$request2-&gt;setConfig(array(
	                'ssl_verify_peer' =&gt; false,
	                'ssl_verify_host' =&gt; false
	            ));
				$request2-&gt;setUrl($url);
				$request2-&gt;setMethod(HTTP_Request2::METHOD_HEAD);
				$result = $request2-&gt;send();
				$res = array();
				$res[] = 'HTTP/'.$result-&gt;getVersion().' '.$result-&gt;getStatus().' '.$result-&gt;getReasonPhrase();
				foreach($result-&gt;getHeader() as $key =&gt; $val) {
					$res[] = $key . ': ' . $val;
				}
				$res = join(&quot;\r\n&quot;, $res);
			} catch( HTTP_Request2_Exception $e ){
				$res = '';
			} catch (Exception $e){
				$res = '';
			}
		
		}
		return $res;
	}
	
	/*********************** paths/urls *************************/

	/**
	 * Return parent directory path
	 *
	 * @param  string  $path  file path
	 * @return string
	 * @author Dmitry (dio) Levashov
	 **/
	protected function _dirname($path) {
		return $this-&gt;_normpath(substr($path, 0, strrpos($path, '/')));
	}

	/**
	 * Return file name
	 *
	 * @param  string  $path  file path
	 * @return string
	 * @author Dmitry (dio) Levashov
	 **/
	protected function _basename($path) {
		return substr($path, strrpos($path, '/') + 1);
	}

	/**
	 * Join dir name and file name and retur full path
	 *
	 * @param  string  $dir
	 * @param  string  $name
	 * @return string
	 * @author Dmitry (dio) Levashov
	 **/
	protected function _joinPath($dir, $name) {
		return $this-&gt;_normpath($dir.'/'.$name);
	}

	/**
	 * Return normalized path, this works the same as os.path.normpath() in Python
	 *
	 * @param  string  $path  path
	 * @return string
	 * @author Troex Nevelin
	 **/
	protected function _normpath($path) {
		$path = '/' . ltrim($path, '/');
		return $path;
	}

	/**
	 * Return file path related to root dir
	 *
	 * @param  string  $path  file path
	 * @return string
	 * @author Dmitry (dio) Levashov
	 **/
	protected function _relpath($path) {
		return $path;
	}

	/**
	 * Convert path related to root dir into real path
	 *
	 * @param  string  $path  file path
	 * @return string
	 * @author Dmitry (dio) Levashov
	 **/
	protected function _abspath($path) {
		return $path;
	}

	/**
	 * Return fake path started from root dir
	 *
	 * @param  string  $path  file path
	 * @return string
	 * @author Dmitry (dio) Levashov
	 **/
	protected function _path($path) {
		return $this-&gt;rootName . $this-&gt;_normpath(substr($path, strlen($this-&gt;root)));
	}

	/**
	 * Return true if $path is children of $parent
	 *
	 * @param  string  $path    path to check
	 * @param  string  $parent  parent path
	 * @return bool
	 * @author Dmitry (dio) Levashov
	 **/
	protected function _inpath($path, $parent) {
		return $path == $parent || strpos($path, $parent.'/') === 0;
	}

	/***************** file stat ********************/
	/**
	 * Return stat for given path.
	 * Stat contains following fields:
	 * - (int)    size    file size in b. required
	 * - (int)    ts      file modification time in unix time. required
	 * - (string) mime    mimetype. required for folders, others - optionally
	 * - (bool)   read    read permissions. required
	 * - (bool)   write   write permissions. required
	 * - (bool)   locked  is object locked. optionally
	 * - (bool)   hidden  is object hidden. optionally
	 * - (string) alias   for symlinks - link target path relative to root path. optionally
	 * - (string) target  for symlinks - link target path. optionally
	 *
	 * If file does not exists - returns empty array or false.
	 *
	 * @param  string  $path    file path
	 * @return array|false
	 * @author Dmitry (dio) Levashov
	 **/
	protected function _stat($path) {
		//if (!empty($this-&gt;ARGS['reload']) &amp;&amp; isset($this-&gt;ARGS['target']) &amp;&amp; strpos($this-&gt;ARGS['target'], $this-&gt;id) === 0) {
		if ($this-&gt;isMyReload()) {
			$this-&gt;deltaCheck();
		}
		if ($raw = $this-&gt;getDBdat($path)) {
			return $this-&gt;parseRaw($raw);
		}
		return false;
	}

	/**
	 * Return true if path is dir and has at least one childs directory
	 *
	 * @param  string  $path  dir path
	 * @return bool
	 * @author Dmitry (dio) Levashov
	 **/
	protected function _subdirs($path) {
		return ($stat = $this-&gt;stat($path)) &amp;&amp; isset($stat['dirs']) ? $stat['dirs'] : false;
	}

	/**
	 * Return object width and height
	 * Ususaly used for images, but can be realize for video etc...
	 *
	 * @param  string  $path  file path
	 * @param  string  $mime  file mime type
	 * @return string
	 * @author Dmitry (dio) Levashov
	 **/
	protected function _dimensions($path, $mime) {
		if (strpos($mime, 'image') !== 0) return '';
		$cache = $this-&gt;getDBdat($path);
		if (isset($cache['width']) &amp;&amp; isset($cache['height'])) {
			return $cache['width'].'x'.$cache['height'];
		}
		$ret = '';
		if ($work = $this-&gt;getWorkFile($path)) {
			if ($size = getimagesize($work)) {
				$cache['width'] = $size[0];
				$cache['height'] = $size[1];
				$this-&gt;updateDBdat($path, $cache);
				$ret = $size[0].'x'.$size[1];
			}
		}
		is_file($work) &amp;&amp; unlink($work);
		return $ret;
	}

	/******************** file/dir content *********************/

	/**
	 * Return files list in directory.
	 *
	 * @param  string  $path  dir path
	 * @return array
	 * @author Dmitry (dio) Levashov
	 * @author Cem (DiscoFever)
	 **/
	protected function _scandir($path) {
		return isset($this-&gt;dirsCache[$path])
			? $this-&gt;dirsCache[$path]
			: $this-&gt;cacheDir($path);
	}

	/**
	 * Open file and return file pointer
	 *
	 * @param  string $path file path
	 * @param string $mode
	 * @return false|resource
	 * @internal param bool $write open file for writing
	 * @author Dmitry (dio) Levashov
	 */
	protected function _fopen($path, $mode='rb') {

		if (($mode == 'rb' || $mode == 'r')) {
			try {
				$res = $this-&gt;dropbox-&gt;media($path);
				$url = parse_url($res['url']);
 				$fp = stream_socket_client('ssl://'.$url['host'].':443');
 				fputs($fp, &quot;GET {$url['path']} HTTP/1.0\r\n&quot;);
 				fputs($fp, &quot;Host: {$url['host']}\r\n&quot;);
 				fputs($fp, &quot;\r\n&quot;);
 				while(trim(fgets($fp)) !== ''){};
 				return $fp;
			} catch (Dropbox_Exception $e) {
				return false;
			}
		}
		
		if ($this-&gt;tmp) {
			$contents = $this-&gt;_getContents($path);
			
			if ($contents === false) {
				return false;
			}
			
			if ($local = $this-&gt;getTempFile($path)) {
				if (file_put_contents($local, $contents, LOCK_EX) !== false) {
					return fopen($local, $mode);
				}
			}
		}

		return false;
	}

	/**
	 * Close opened file
	 *
	 * @param  resource $fp file pointer
	 * @param string $path
	 * @return bool
	 * @author Dmitry (dio) Levashov
	 */
	protected function _fclose($fp, $path='') {
		fclose($fp);
		if ($path) {
			unlink($this-&gt;getTempFile($path));
		}
	}

	/********************  file/dir manipulations *************************/

	/**
	 * Create dir and return created dir path or false on failed
	 *
	 * @param  string  $path  parent dir path
	 * @param string  $name  new directory name
	 * @return string|bool
	 * @author Dmitry (dio) Levashov
	 **/
	protected function _mkdir($path, $name) {
		$path = $this-&gt;_normpath($path.'/'.$name);
		try {
			$this-&gt;dropbox-&gt;createFolder($path);
		} catch (Dropbox_Exception $e) {
			$this-&gt;deltaCheck();
			if ($this-&gt;dir($this-&gt;encode($path))) {
				return $path;
			}
			return $this-&gt;setError('Dropbox error: '.$e-&gt;getMessage());
		}
		$this-&gt;deltaCheck();
		return $path;
	}

	/**
	 * Create file and return it's path or false on failed
	 *
	 * @param  string  $path  parent dir path
	 * @param string  $name  new file name
	 * @return string|bool
	 * @author Dmitry (dio) Levashov
	 **/
	protected function _mkfile($path, $name) {
		return $this-&gt;_filePutContents($path.'/'.$name, '');
	}

	/**
	 * Create symlink. FTP driver does not support symlinks.
	 *
	 * @param  string $target link target
	 * @param  string $path symlink path
	 * @param string $name
	 * @return bool
	 * @author Dmitry (dio) Levashov
	 */
	protected function _symlink($target, $path, $name) {
		return false;
	}

	/**
	 * Copy file into another file
	 *
	 * @param  string  $source     source file path
	 * @param  string  $targetDir  target directory path
	 * @param  string  $name       new file name
	 * @return bool
	 * @author Dmitry (dio) Levashov
	 **/
	protected function _copy($source, $targetDir, $name) {
		$path = $this-&gt;_normpath($targetDir.'/'.$name);
		try {
			$this-&gt;dropbox-&gt;copy($source, $path);
		} catch (Dropbox_Exception $e) {
			return $this-&gt;setError('Dropbox error: '.$e-&gt;getMessage());
		}
		$this-&gt;deltaCheck();
		return true;
	}

	/**
	 * Move file into another parent dir.
	 * Return new file path or false.
	 *
	 * @param  string $source source file path
	 * @param $targetDir
	 * @param  string $name file name
	 * @return bool|string
	 * @internal param string $target target dir path
	 * @author Dmitry (dio) Levashov
	 */
	protected function _move($source, $targetDir, $name) {
		$target = $this-&gt;_normpath($targetDir.'/'.$name);
		try {
			$this-&gt;dropbox-&gt;move($source, $target);
		} catch (Dropbox_Exception $e) {
			return $this-&gt;setError('Dropbox error: '.$e-&gt;getMessage());
		}
		$this-&gt;deltaCheck();
		return $target;
	}

	/**
	 * Remove file
	 *
	 * @param  string  $path  file path
	 * @return bool
	 * @author Dmitry (dio) Levashov
	 **/
	protected function _unlink($path) {
		try {
			$this-&gt;dropbox-&gt;delete($path);
		} catch (Dropbox_Exception $e) {
			return $this-&gt;setError('Dropbox error: '.$e-&gt;getMessage());
		}
		$this-&gt;deltaCheck();
		return true;
	}

	/**
	 * Remove dir
	 *
	 * @param  string  $path  dir path
	 * @return bool
	 * @author Dmitry (dio) Levashov
	 **/
	protected function _rmdir($path) {
		return $this-&gt;_unlink($path);
	}

	/**
	 * Create new file and write into it from file pointer.
	 * Return new file path or false on error.
	 *
	 * @param  resource $fp file pointer
	 * @param string $path
	 * @param  string $name file name
	 * @param  array $stat file stat (required by some virtual fs)
	 * @return bool|string
	 * @internal param string $dir target dir path
	 * @author Dmitry (dio) Levashov
	 */
	protected function _save($fp, $path, $name, $stat) {
		if ($name) $path .= '/'.$name;
		$path = $this-&gt;_normpath($path);
		try {
			$this-&gt;dropbox-&gt;putFile($path, $fp);
		} catch (Dropbox_Exception $e) {
			return $this-&gt;setError('Dropbox error: '.$e-&gt;getMessage());
		}
		$this-&gt;deltaCheck();
		if (is_array($stat)) {
			$raw = $this-&gt;getDBdat($path);
			if (isset($stat['width'])) $raw['width'] = $stat['width'];
			if (isset($stat['height'])) $raw['height'] = $stat['height'];
			$this-&gt;updateDBdat($path, $raw);
		}
		return $path;
	}

	/**
	 * Get file contents
	 *
	 * @param  string  $path  file path
	 * @return string|false
	 * @author Dmitry (dio) Levashov
	 **/
	protected function _getContents($path) {
		$contents = '';
		try {
			$contents = $this-&gt;dropbox-&gt;getFile($path);
		} catch (Dropbox_Exception $e) {
			return $this-&gt;setError('Dropbox error: '.$e-&gt;getMessage());
		}
		return $contents;
	}

	/**
	 * Write a string to a file
	 *
	 * @param  string  $path     file path
	 * @param  string  $content  new file content
	 * @return bool
	 * @author Dmitry (dio) Levashov
	 **/
	protected function _filePutContents($path, $content) {
		$res = false;

		if ($local = $this-&gt;getTempFile($path)) {
			if (file_put_contents($local, $content, LOCK_EX) !== false
			&amp;&amp; ($fp = fopen($local, 'rb'))) {
				clearstatcache();
				$res = $this-&gt;_save($fp, $path, '', array());
				fclose($fp);
			}
			file_exists($local) &amp;&amp; unlink($local);
		}

		return $res;
	}

	/**
	 * Detect available archivers
	 *
	 * @return array
	 **/
	protected function _checkArchivers() {
		// die('Not yet implemented. (_checkArchivers)');
		return array();
	}

	/**
	 * chmod implementation
	 *
	 * @param string $path
	 * @param string $mode
	 * @return bool
	 */
	protected function _chmod($path, $mode) {
		return false;
	}

	/**
	 * Unpack archive
	 *
	 * @param  string  $path  archive path
	 * @param  array   $arc   archiver command and arguments (same as in $this-&gt;archivers)
	 * @return true
	 * @return void
	 * @author Dmitry (dio) Levashov
	 * @author Alexey Sukhotin
	 **/
	protected function _unpack($path, $arc) {
		die('Not yet implemented. (_unpack)');
	}

	/**
	 * Recursive symlinks search
	 *
	 * @param  string  $path  file/dir path
	 * @return bool
	 * @author Dmitry (dio) Levashov
	 **/
	protected function _findSymlinks($path) {
		die('Not yet implemented. (_findSymlinks)');
	}

	/**
	 * Extract files from archive
	 *
	 * @param  string  $path  archive path
	 * @param  array   $arc   archiver command and arguments (same as in $this-&gt;archivers)
	 * @return true
	 * @author Dmitry (dio) Levashov,
	 * @author Alexey Sukhotin
	 **/
	protected function _extract($path, $arc) {
		die('Not yet implemented. (_extract)');

	}

	/**
	 * Create archive and return its path
	 *
	 * @param  string  $dir    target dir
	 * @param  array   $files  files names list
	 * @param  string  $name   archive name
	 * @param  array   $arc    archiver options
	 * @return string|bool
	 * @author Dmitry (dio) Levashov,
	 * @author Alexey Sukhotin
	 **/
	protected function _archive($dir, $files, $name, $arc) {
		die('Not yet implemented. (_archive)');
	}

} // END class
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