recca0120 / laravel-elfinder

lib/elFinderVolumeDropbox2.class.php

<?php

For compatibility and reusability of your code, PSR1 recommends that a file should introduce either new symbols (like classes, functions, etc.) or have side-effects (like outputting something, or including other files), but not both at the same time. The first symbol is defined on line 18 and the first side effect is on line 10.

use Kunnu\Dropbox\Dropbox;
use Kunnu\Dropbox\DropboxApp;
use Kunnu\Dropbox\DropboxFile;
use Kunnu\Dropbox\Models\FileMetadata;
use Kunnu\Dropbox\Models\FolderMetadata;
use Kunnu\Dropbox\Exceptions\DropboxClientException;

elFinder::$netDrivers['dropbox2'] = 'Dropbox2';

/**
 * Simple elFinder driver for Dropbox
 * kunalvarma05/dropbox-php-sdk:0.1.5 or above.
 *
 * @author Naoki Sawada
 **/
class elFinderVolumeDropbox2 extends elFinderVolumeDriver

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

{
    /**
     * Net mount key.
     *
     * @var string
     **/
    public $netMountKey = '';
    /**
     * Driver id
     * Must be started from letter and contains [a-z0-9]
     * Used as part of volume id.
     *
     * @var string
     **/
    protected $driverId = 'db';

    /**
     * Dropbox service object.
     *
     * @var object
     **/
    protected $service = null;

    /**
     * Directory for tmp files
     * If not set driver will try to use tmbDir as tmpDir.
     *
     * @var string
     **/
    protected $tmp = '';

    /**
     * Fetch options.
     *
     * @var string
     */
    private $FETCH_OPTIONS = [];

    /**
     * Constructor
     * Extend options with required fields.
     *
     * @author Naoki Sawada
     **/
    public function __construct()

This method seems to be duplicated in your project.

    {
        $opts = [
            'app_key' => '',
            'app_secret' => '',
            'access_token' => '',
            'aliasFormat' => '%s@Dropbox',
            'path' => '/',
            'separator' => '/',
            'acceptedName' => '#^[^/\\?*:|"<>]*[^./\\?*:|"<>]$#',
            'rootCssClass' => 'elfinder-navbar-root-dropbox',
            'publishPermission' => [
                'requested_visibility' => 'public',
                //'link_password' => '',

67% of this comment could be valid code. Did you maybe forget this after debugging?

                //'expires' => '',

67% of this comment could be valid code. Did you maybe forget this after debugging?

            ],
            'getThumbSize' => 'medium', // Available sizes: 'thumb', 'small', 'medium', 'large', 'huge'

50% of this comment could be valid code. Did you maybe forget this after debugging?

        ];
        $this->options = array_merge($this->options, $opts);
        $this->options['mimeDetect'] = 'internal';
    }

    /**
     * Get OAuth2 access token form OAuth1 tokens.
     *
     * @param string $app_key
     * @param string $app_secret
     * @param string $oauth1_token
     * @param string $oauth1_secret
     *
     * @return string|false
     */
    public static function getTokenFromOauth1($app_key, $app_secret, $oauth1_token, $oauth1_secret)
    {
        $data = [
                'oauth1_token' => $oauth1_token,
                'oauth1_token_secret' => $oauth1_secret,
        ];
        $auth = base64_encode($app_key.':'.$app_secret);

        $ch = curl_init('https://api.dropboxapi.com/2/auth/token/from_oauth1');
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_HTTPHEADER, [
            'Content-Type: application/json',
            'Authorization: Basic '.$auth,
        ]);
        curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
        $result = curl_exec($ch);
        curl_close($ch);

        $res = $result ? json_decode($result, true) : [];

        return isset($res['oauth2_token']) ? $res['oauth2_token'] : false;
    }

    /*********************************************************************/
    /*                        EXTENDED FUNCTIONS                         */
    /*********************************************************************/

    /**
     * Prepare
     * Call from elFinder::netmout() before volume->mount().
     *
     * @return array
     *
     * @author Naoki Sawada
     **/
    public function netmountPrepare($options)

netmountPrepare uses the super-global variable $_GET which is generally not recommended.

    {
        if (empty($options['app_key']) && defined('ELFINDER_DROPBOX_APPKEY')) {
            $options['app_key'] = ELFINDER_DROPBOX_APPKEY;
        }
        if (empty($options['app_secret']) && defined('ELFINDER_DROPBOX_APPSECRET')) {
            $options['app_secret'] = ELFINDER_DROPBOX_APPSECRET;
        }

        if (! isset($options['pass'])) {
            $options['pass'] = '';
        }

        try {
            $this->session->start();
            $app = new DropboxApp($options['app_key'], $options['app_secret']);
            $dropbox = new Dropbox($app);
            $authHelper = $dropbox->getAuthHelper();

            if ($options['pass'] === 'reauth') {
                $options['pass'] = '';
                $this->session->set('Dropbox2AuthParams', [])->set('Dropbox2Tokens', []);
            } elseif ($options['pass'] === 'dropbox2') {
                $options['pass'] = '';
            }

            $options = array_merge($this->session->get('Dropbox2AuthParams', []), $options);

            if (! isset($options['tokens'])) {
                $options['tokens'] = $this->session->get('Dropbox2Tokens', []);
                $this->session->remove('Dropbox2Tokens');
            }
            $aToken = $options['tokens'];
            if (! is_array($aToken) || ! isset($aToken['access_token'])) {
                $aToken = [];
            }

            $rootObj = $service = null;

$service is not used, you could remove the assignment.

$rootObj is not used, you could remove the assignment.

            if ($aToken) {

The expression $aToken of type array is implicitly converted to a boolean; are you sure this is intended? If so, consider using ! empty($expr) instead to make it clear that you intend to check for an array without elements.

                try {
                    $dropbox->setAccessToken($aToken['access_token']);
                    $this->session->set('Dropbox2AuthParams', $options);
                } catch (DropboxClientException $e) {

The class Kunnu\Dropbox\Exceptions\DropboxClientException does not exist. Did you forget a USE statement, or did you not list all dependencies?

                    $aToken = [];
                    $options['tokens'] = [];
                    if ($options['user'] !== 'init') {
                        $this->session->set('Dropbox2AuthParams', $options);

                        return ['exit' => true, 'error' => elFinder::ERROR_REAUTH_REQUIRE];
                    }
                }
            }

            if ($options['user'] === 'init') {
                if (empty($options['url'])) {
                    $options['url'] = elFinder::getConnectorUrl();
                }

                $callback = $options['url']
                           .'?cmd=netmount&protocol=dropbox2&host=1';

                if (! $aToken && empty($_GET['code'])) {

The expression $aToken of type array is implicitly converted to a boolean; are you sure this is intended? If so, consider using empty($expr) instead to make it clear that you intend to check for an array without elements.

                    $url = $authHelper->getAuthUrl($callback);

                    $html = '<input id="elf-volumedriver-dropbox2-host-btn" class="ui-button ui-widget ui-state-default ui-corner-all ui-button-text-only" value="{msg:btnApprove}" type="button" onclick="window.open(\''.$url.'\')">';
                    $html .= '<script>
                        $("#'.$options['id'].'").elfinder("instance").trigger("netmount", {protocol: "dropbox2", mode: "makebtn"});
                    </script>';
                    if (empty($options['pass']) && $options['host'] !== '1') {

This code seems to be duplicated across your project.

                        $options['pass'] = 'return';
                        $this->session->set('Dropbox2AuthParams', $options);

                        return ['exit' => true, 'body' => $html];
                    } else {
                        $out = [
                            'node' => $options['id'],
                            'json' => '{"protocol": "dropbox2", "mode": "makebtn", "body" : "'.str_replace($html, '"', '\\"').'", "error" : "'.elFinder::ERROR_ACCESS_DENIED.'"}',
                            'bind' => 'netmount',
                        ];

                        return ['exit' => 'callback', 'out' => $out];
                    }
                } else {
                    if (! empty($_GET['code']) && isset($_GET['state'])) {
                        $tokenObj = $authHelper->getAccessToken($_GET['code'], $_GET['state'], $callback);
                        $options['tokens'] = [
                            'access_token' => $tokenObj->getToken(),
                            'uid' => $tokenObj->getUid(),
                        ];
                        $this->session->set('Dropbox2Tokens', $options['tokens'])->set('Dropbox2AuthParams', $options);
                        $out = [
                            'node' => $options['id'],
                            'json' => '{"protocol": "dropbox2", "mode": "done", "reset": 1}',
                            'bind' => 'netmount',
                        ];

                        return ['exit' => 'callback', 'out' => $out];
                    }
                    $path = $options['path'];
                    $folders = [];
                    $listFolderContents = $dropbox->listFolder($path);
                    $items = $listFolderContents->getItems();
                    foreach ($items as $item) {
                        $data = $item->getData();
                        if ($data['.tag'] === 'folder') {
                            $folders[$data['path_lower']] = $data['name'];
                        }
                    }
                    natcasesort($folders);

                    if ($options['pass'] === 'folders') {
                        return ['exit' => true, 'folders' => $folders];
                    }

                    $folders = ['/' => '/'] + $folders;
                    $folders = json_encode($folders);
                    $json = '{"protocol": "dropbox2", "mode": "done", "folders": '.$folders.'}';
                    $options['pass'] = 'return';
                    $html = 'Dropbox.com';
                    $html .= '<script>
                        $("#'.$options['id'].'").elfinder("instance").trigger("netmount", '.$json.');
                    </script>';
                    $this->session->set('Dropbox2AuthParams', $options);

                    return ['exit' => true, 'body' => $html];
                }
            }
        } catch (DropboxClientException $e) {

The class Kunnu\Dropbox\Exceptions\DropboxClientException does not exist. Did you forget a USE statement, or did you not list all dependencies?

            $this->session->remove('Dropbox2AuthParams')->remove('Dropbox2Tokens');
            if (empty($options['pass'])) {

This code seems to be duplicated across your project.

                return ['exit' => true, 'body' => '{msg:'.elFinder::ERROR_ACCESS_DENIED.'}'.' '.$e->getMessage()];
            } else {
                return ['exit' => true, 'error' => [elFinder::ERROR_ACCESS_DENIED, $e->getMessage()]];
            }
        }

        if (! $aToken) {

The expression $aToken of type array is implicitly converted to a boolean; are you sure this is intended? If so, consider using empty($expr) instead to make it clear that you intend to check for an array without elements.

            return ['exit' => true, 'error' => elFinder::ERROR_REAUTH_REQUIRE];
        }

        if ($options['path'] === 'root') {
            $options['path'] = '/';
        }

        try {
            if ($options['path'] !== '/') {
                $file = $dropbox->getMetadata($options['path']);
                $name = $file->getName();
            } else {
                $name = 'root';
            }
            $options['alias'] = sprintf($this->options['aliasFormat'], $name);
        } catch (DropboxClientException $e) {

The class Kunnu\Dropbox\Exceptions\DropboxClientException does not exist. Did you forget a USE statement, or did you not list all dependencies?

            return ['exit' => true, 'error' => $e->getMessage()];
        }

        foreach (['host', 'user', 'pass', 'id', 'offline'] as $key) {

This code seems to be duplicated across your project.

            unset($options[$key]);
        }

        return $options;
    }

    /**
     * process of on netunmount
     * Drop `Dropbox` & rm thumbs.
     *
     * @param array $options

There is no parameter named $options. Was it maybe removed?

     *
     * @return bool
     */
    public function netunmount($netVolumes, $key)

The parameter $netVolumes is not used and could be removed.

The parameter $key is not used and could be removed.

    {
        if ($tmbs = glob(rtrim($this->options['tmbPath'], '\\/').DIRECTORY_SEPARATOR.$this->driverId.'_'.$this->options['tokens']['uid'].'*.png')) {
            foreach ($tmbs as $file) {
                unlink($file);
            }
        }

        return true;
    }

    /*********************************************************************/
    /*                               FS API                              */
    /*********************************************************************/

    /**
     * Close opened connection.
     **/
    public function umount()
    {
    }

    /**
     * Return content URL (for netmout volume driver)
     * If file.url == 1 requests from JavaScript client with XHR.
     *
     * @param string $hash    file hash
     * @param array  $options options array
     *
     * @return bool|string
     *
     * @author Naoki Sawada
     */
    public function getContentUrl($hash, $options = [])
    {
        if (! empty($options['temporary'])) {

This code seems to be duplicated across your project.

            // try make temporary file
            $url = parent::getContentUrl($hash, $options);
            if ($url) {
                return $url;
            }
        }
        $file = $this->file($hash);
        if (($file = $this->file($hash)) !== false && (! $file['url'] || $file['url'] == 1)) {
            $path = $this->decode($hash);
            $url = '';
            try {
                $res = $this->service->postToAPI('/sharing/list_shared_links', ['path' => $path, 'direct_only' => true])->getDecodedBody();
                if ($res && ! empty($res['links'])) {
                    foreach ($res['links'] as $link) {
                        if (isset($link['link_permissions'])
                                && isset($link['link_permissions']['requested_visibility'])
                                && $link['link_permissions']['requested_visibility']['.tag'] === $this->options['publishPermission']['requested_visibility']) {
                            $url = $link['url'];
                            break;
                        }
                    }
                }
                if (! $url) {
                    $res = $this->service->postToAPI('/sharing/create_shared_link_with_settings', ['path' => $path, 'settings' => $this->options['publishPermission']])->getDecodedBody();
                    if (isset($res['url'])) {
                        $url = $res['url'];
                    }
                }
                if ($url) {
                    $url = str_replace('www.dropbox.com', 'dl.dropboxusercontent.com', $url);
                    $url = str_replace('?dl=0', '', $url);

                    return $url;
                }
            } catch (DropboxClientException $e) {

The class Kunnu\Dropbox\Exceptions\DropboxClientException does not exist. Did you forget a USE statement, or did you not list all dependencies?

                return $this->$this->setError('Dropbox error: '.$e->getMessage());
            }
        }

        return false;
    }

    /**
     * Return debug info for client.
     *
     * @return array
     **/
    public function debug()
    {
        $res = parent::debug();
        if (isset($this->options['tokens']) && ! empty($this->options['tokens']['uid'])) {
            $res['Dropbox uid'] = $this->options['tokens']['uid'];
            $res['access_token'] = $this->options['tokens']['access_token'];
        }

        return $res;
    }

    /*********************************************************************/
    /*                        ORIGINAL FUNCTIONS                         */
    /*********************************************************************/

    /**
     * Get Parent ID, Item ID, Parent Path as an array from path.
     *
     * @param string $path
     *
     * @return array
     */
    protected function _db_splitPath($path)
    {
        $path = trim($path, '/');
        if ($path === '') {
            $dirname = '/';
            $basename = '';
        } else {
            $pos = strrpos($path, '/');
            if ($pos === false) {
                $dirname = '/';
                $basename = $path;
            } else {
                $dirname = '/'.substr($path, 0, $pos);
                $basename = substr($path, $pos + 1);
            }
        }

        return [$dirname, $basename];
    }

    /**
     * Parse line from Dropbox metadata output and return file stat (array).
     *
     * @param string $raw line from ftp_rawlist() output
     *
     * @return array
     *
     * @author Naoki Sawada
     **/
    protected function _db_parseRaw($raw)
    {
        $stat = [];
        $isFolder = false;
        if ($raw === true) {
            // root folder
            $isFolder = true;
            $stat['name'] = '';
            $stat['iid'] = '0';
        }

        $data = [];
        if (is_object($raw)) {
            $isFolder = $raw instanceof FolderMetadata;

The class Kunnu\Dropbox\Models\FolderMetadata does not exist. Did you forget a USE statement, or did you not list all dependencies?

            $data = $raw->getData();
        } elseif (is_array($raw)) {
            $isFolder = $raw['.tag'] === 'folder';
            $data = $raw;
        }

        if (isset($data['path_lower'])) {
            $stat['path'] = $data['path_lower'];
        }

        if (isset($data['name'])) {
            $stat['name'] = $data['name'];
        }

        if (isset($data['id'])) {
            $stat['iid'] = substr($data['id'], 3);
        }

        if ($isFolder) {
            $stat['mime'] = 'directory';
            $stat['size'] = 0;
            $stat['ts'] = 0;
            $stat['dirs'] = -1;
        } else {
            $stat['size'] = isset($data['size']) ? (int) $data['size'] : 0;
            if (isset($data['server_modified'])) {
                $stat['ts'] = strtotime($data['server_modified']);
            } elseif (isset($data['client_modified'])) {
                $stat['ts'] = strtotime($data['client_modified']);
            } else {
                $stat['ts'] = 0;
            }
            $stat['url'] = '1';
        }

        return $stat;
    }

    /**
     * Get thumbnail from Dropbox.
     *
     * @param string $path
     * @param string $size

There is no parameter named $size. Was it maybe removed?

     *
     * @return string | boolean
     */
    protected function _db_getThumbnail($path)
    {
        try {
            return $this->service->getThumbnail($path, $this->options['getThumbSize'])->getContents();
        } catch (DropboxClientException $e) {

The class Kunnu\Dropbox\Exceptions\DropboxClientException does not exist. Did you forget a USE statement, or did you not list all dependencies?

            return false;
        }
    }

    /**
     * Join dir name and file name(display name) and retur full path.
     *
     * @param unknown $dir
     * @param unknown $displayName
     *
     * @return string
     */
    protected function _db_joinName($dir, $displayName)
    {
        return rtrim($dir, '/').'/'.$displayName;
    }

    /*********************************************************************/
    /*                        INIT AND CONFIGURE                         */
    /*********************************************************************/

    /**
     * Prepare FTP connection
     * Connect to remote server and check if credentials are correct, if so, store the connection id in $ftp_conn.
     *
     * @return bool
     *
     * @author Naoki Sawada
     **/
    protected function init()
    {
        if (empty($options['app_key'])) {

The variable $options seems to never exist, and therefore empty should always return true. Did you maybe rename this variable?

            if (defined('ELFINDER_DROPBOX_APPKEY') && ELFINDER_DROPBOX_APPKEY) {
                $this->options['app_key'] = ELFINDER_DROPBOX_APPKEY;
            } else {
                return $this->setError('Required option "app_key" is undefined.');
            }
        }
        if (empty($options['app_secret'])) {
            if (defined('ELFINDER_DROPBOX_APPSECRET') && ELFINDER_DROPBOX_APPSECRET) {
                $this->options['app_secret'] = ELFINDER_DROPBOX_APPSECRET;
            } else {
                return $this->setError('Required option "app_secret" is undefined.');
            }
        }
        if (isset($this->options['tokens']) && is_array($this->options['tokens']) && ! empty($this->options['tokens']['access_token'])) {

This code seems to be duplicated across your project.

            $this->options['access_token'] = $this->options['tokens']['access_token'];
        }
        if (! $this->options['access_token']) {
            return $this->setError('Required option "access_token" or "refresh_token" is undefined.');
        }

        try {
            // make net mount key for network mount
            $aToken = $this->options['access_token'];
            $this->netMountKey = md5($aToken.'-'.$this->options['path']);

            $errors = [];
            if (! $this->service) {
                $app = new DropboxApp($this->options['app_key'], $this->options['app_secret'], $aToken);
                $this->service = new Dropbox($app);
            }
        } catch (DropboxClientException $e) {

The class Kunnu\Dropbox\Exceptions\DropboxClientException does not exist. Did you forget a USE statement, or did you not list all dependencies?

            $errors[] = 'Dropbox error: '.$e->getMessage();

The variable $errors does not seem to be defined for all execution paths leading up to this point.

        } catch (Exception $e) {
            $errors[] = $e->getMessage();
        }

        if (! $this->service) {
            $errors[] = 'Dropbox Service could not be loaded.';

            return $this->setError($errors);
        }

        // normalize root path
        $this->options['path'] = strtolower($this->options['path']);
        if ($this->options['path'] == 'root') {
            $this->options['path'] = '/';
        }
        $this->root = $this->options['path'] = $this->_normpath($this->options['path']);

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

This code seems to be duplicated across your project.

            $this->options['alias'] = sprintf($this->options['aliasFormat'], ($this->options['path'] === '/') ? 'root' : $this->_basename($this->options['path']));
        }

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

        if (! empty($this->options['tmpPath'])) {
            if ((is_dir($this->options['tmpPath']) || mkdir($this->options['tmpPath'])) && is_writable($this->options['tmpPath'])) {
                $this->tmp = $this->options['tmpPath'];
            }
        }

        if (! $this->tmp && ($tmp = elFinder::getStaticVar('commonTempPath'))) {
            $this->tmp = $tmp;
        }

        // This driver dose not support `syncChkAsTs`
        $this->options['syncChkAsTs'] = false;

        // 'lsPlSleep' minmum 10 sec
        $this->options['lsPlSleep'] = max(10, $this->options['lsPlSleep']);

        return true;
    }

    /**
     * Configure after successfull mount.
     *
     * @author Naoki Sawada
     **/
    protected function configure()

This method seems to be duplicated in your project.

    {
        parent::configure();

        // fallback of $this->tmp
        if (! $this->tmp && $this->tmbPathWritable) {
            $this->tmp = $this->tmbPath;
        }

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

        if ($this->isMyReload()) {

This if statement is empty and can be removed.

            //$this->_db_getDirectoryData(false);

86% of this comment could be valid code. Did you maybe forget this after debugging?

        }
    }

    /**
     * Cache dir contents.
     *
     * @param string $path dir path
     *
     * @author Naoki Sawada
     **/
    protected function cacheDir($path)
    {
        $this->dirsCache[$path] = [];
        $hasDir = false;

        $res = $this->service->listFolder($path, $this->FETCH_OPTIONS);

        if ($res) {
            $items = $res->getItems()->all();
            foreach ($items as $raw) {
                if ($stat = $this->_db_parseRaw($raw)) {
                    $mountPath = $this->_joinPath($path, $stat['name']);
                    $stat = $this->updateCache($mountPath, $stat);
                    if (empty($stat['hidden']) && $path !== $mountPath) {
                        if (! $hasDir && $stat['mime'] === 'directory') {
                            $hasDir = true;
                        }
                        $this->dirsCache[$path][] = $mountPath;
                    }
                }
            }
        }

        if (isset($this->sessionCache['subdirs'])) {
            $this->sessionCache['subdirs'][$path] = $hasDir;
        }

        return $this->dirsCache[$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, $mimes)
    {
        if ($mimes) {

The expression $mimes of type array is implicitly converted to a boolean; are you sure this is intended? If so, consider using ! empty($expr) instead to make it clear that you intend to check for an array without elements.

            return parent::doSearch($path, $q, $mimes);
        }

        $timeout = $this->options['searchTimeout'] ? $this->searchStart + $this->options['searchTimeout'] : 0;

        $searchRes = $this->service->search($path, $q, ['start' => 0, 'max_results' => 1000]);
        $items = $searchRes->getItems();
        $more = $searchRes->hasMoreItems();
        while ($more) {
            if ($timeout && $timeout < time()) {
                $this->setError(elFinder::ERROR_SEARCH_TIMEOUT, $this->_path($path));
                break;
            }
            $searchRes = $this->service->search($path, $q, ['start' => $searchRes->getCursor(), 'max_results' => 1000]);
            $more = $searchRes->hasMoreItems();
            $items = $items->merge($searchRes->getItems());
        }

        $result = [];
        foreach ($items as $raw) {
            if ($stat = $this->_db_parseRaw($raw->getMetadata())) {
                $stat = $this->updateCache($stat['path'], $stat);
                if (empty($stat['hidden'])) {
                    $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 $name new file name (optionaly)
     *
     * @return string|false
     *
     * @author Naoki Sawada
     **/
    protected function copy($src, $dst, $name)
    {
        $srcStat = $this->stat($src);
        $target = $this->_joinPath($dst, $name);
        $tgtStat = $this->stat($target);
        if ($tgtStat) {

The expression $tgtStat of type array is implicitly converted to a boolean; are you sure this is intended? If so, consider using ! empty($expr) instead to make it clear that you intend to check for an array without elements.

            if ($srcStat['mime'] === 'directory') {
                return parent::copy($src, $dst, $name);
            } else {
                $this->_unlink($target);
            }
        }
        $this->clearcache();
        if ($res = $this->_copy($src, $dst, $name)) {
            $this->added[] = $this->stat($target);
            $res = $target;
        }

        return $res;
    }

    /**
     * Remove file/ recursive remove dir.
     *
     * @param string $path  file path
     * @param bool   $force try to remove even if file locked
     *
     * @return bool
     *
     * @author Naoki Sawada
     **/
    protected function remove($path, $force = false, $recursive = false)

This method seems to be duplicated in your project.

    {
        $stat = $this->stat($path);
        $stat['realpath'] = $path;
        $this->rmTmb($stat);

$stat is of type array<string,string,{"realpath":"string"}>, but the function expects a string.

        $this->clearcache();

        if (empty($stat)) {
            return $this->setError(elFinder::ERROR_RM, $this->_path($path), elFinder::ERROR_FILE_NOT_FOUND);
        }

        if (! $force && ! empty($stat['locked'])) {
            return $this->setError(elFinder::ERROR_LOCKED, $this->_path($path));
        }

        if ($stat['mime'] == 'directory') {
            if (! $recursive && ! $this->_rmdir($path)) {
                return $this->setError(elFinder::ERROR_RM, $this->_path($path));
            }
        } else {
            if (! $recursive && ! $this->_unlink($path)) {
                return $this->setError(elFinder::ERROR_RM, $this->_path($path));
            }
        }

        $this->removed[] = $stat;

        return true;
    }

    /**
     * Create thumnbnail and return it's URL on success.
     *
     * @param string $path file path
     * @param string $mime file mime type

There is no parameter named $mime. Was it maybe removed?

     *
     * @return string|false
     *
     * @author Naoki Sawada
     **/
    protected function createTmb($path, $stat)

This method seems to be duplicated in your project.

    {
        if (! $stat || ! $this->canCreateTmb($path, $stat)) {
            return false;
        }

        $name = $this->tmbname($stat);
        $tmb = $this->tmbPath.DIRECTORY_SEPARATOR.$name;

        // copy image into tmbPath so some drivers does not store files on local fs
        if (! $data = $this->_db_getThumbnail($path)) {
            return false;
        }
        if (! file_put_contents($tmb, $data)) {
            return false;
        }

        $result = false;

$result is not used, you could remove the assignment.

        $tmbSize = $this->tmbSize;

        if (($s = getimagesize($tmb)) == false) {
            return false;
        }

        /* If image smaller or equal thumbnail size - just fitting to thumbnail square */
        if ($s[0] <= $tmbSize && $s[1] <= $tmbSize) {
            $result = $this->imgSquareFit($tmb, $tmbSize, $tmbSize, 'center', 'middle', $this->options['tmbBgColor'], 'png');
        } else {
            if ($this->options['tmbCrop']) {

                /* Resize and crop if image bigger than thumbnail */
                if (! (($s[0] > $tmbSize && $s[1] <= $tmbSize) || ($s[0] <= $tmbSize && $s[1] > $tmbSize)) || ($s[0] > $tmbSize && $s[1] > $tmbSize)) {
                    $result = $this->imgResize($tmb, $tmbSize, $tmbSize, true, false, 'png');

$result is not used, you could remove the assignment.

                }

                if (($s = getimagesize($tmb)) != false) {
                    $x = $s[0] > $tmbSize ? intval(($s[0] - $tmbSize) / 2) : 0;
                    $y = $s[1] > $tmbSize ? intval(($s[1] - $tmbSize) / 2) : 0;
                    $result = $this->imgCrop($tmb, $tmbSize, $tmbSize, $x, $y, 'png');

$x is of type integer, but the function expects a boolean.

$y is of type integer, but the function expects a boolean.

$result is not used, you could remove the assignment.

                }
            } else {
                $result = $this->imgResize($tmb, $tmbSize, $tmbSize, true, true, 'png');

$result is not used, you could remove the assignment.

            }

            $result = $this->imgSquareFit($tmb, $tmbSize, $tmbSize, 'center', 'middle', $this->options['tmbBgColor'], 'png');
        }

        if (! $result) {

The expression $result of type false|string is loosely compared to false; this is ambiguous if the string can be empty. You might want to explicitly use === false instead.

            unlink($tmb);

            return false;
        }

        return $name;
    }

    /**
     * Return thumbnail file name for required file.
     *
     * @param array $stat file stat
     *
     * @return string
     *
     * @author Naoki Sawada
     **/
    protected function tmbname($stat)
    {
        $name = $this->driverId.'_';
        if (isset($this->options['tokens']) && is_array($this->options['tokens'])) {
            $name .= $this->options['tokens']['uid'];
        }

        return $name.md5($stat['iid']).$stat['ts'].'.png';
    }

    /*********************** paths/urls *************************/

    /**
     * Return parent directory path.
     *
     * @param string $path file path
     *
     * @return string
     *
     * @author Naoki Sawada
     **/
    protected function _dirname($path)
    {
        list($dirname) = $this->_db_splitPath($path);

        return $dirname;
    }

    /**
     * Return file name.
     *
     * @param string $path file path
     *
     * @return string
     *
     * @author Naoki Sawada
     **/
    protected function _basename($path)
    {
        list(, $basename) = $this->_db_splitPath($path);

        return $basename;
    }

    /**
     * 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, $name)
    {
        return rtrim($dir, '/').'/'.strtolower($name);
    }

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

    /**
     * Return file path related to root dir.
     *
     * @param string $path file path
     *
     * @return string
     *
     * @author Dmitry (dio) Levashov
     **/
    protected function _relpath($path)
    {
        if ($path === $this->root) {
            return '';
        } else {
            return ltrim(substr($path, strlen($this->root)), '/');
        }
    }

    /**
     * Convert path related to root dir into real path.
     *
     * @param string $path file path
     *
     * @return string
     *
     * @author Naoki Sawada
     **/
    protected function _abspath($path)
    {
        if ($path === '/') {
            return $this->root;
        } else {
            return $this->_joinPath($this->root, $path);
        }
    }

    /**
     * Return fake path started from root dir.
     *
     * @param string $path file path
     *
     * @return string
     *
     * @author Naoki Sawada
     **/
    protected function _path($path)
    {
        $path = $this->_normpath(substr($path, strlen($this->root)));

        return $path;
    }

    /**
     * Return true if $path is children of $parent.
     *
     * @param string $path   path to check
     * @param string $parent parent path
     *
     * @return bool
     *
     * @author Naoki Sawada
     **/
    protected function _inpath($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 ($raw = $this->_db_getFile($path)) {
            return $this->_db_parseRaw($raw);

It seems like $raw defined by $this->_db_getFile($path) on line 1025 can also be of type boolean; however, elFinderVolumeDropbox2::_db_parseRaw() does only seem to accept string, maybe add an additional type check?

        }

        return false;
    }

    /**
     * Return true if path is dir and has at least one childs directory.
     *
     * @param string $path dir path
     *
     * @return bool
     *
     * @author Naoki Sawada
     **/
    protected function _subdirs($path)
    {
        $hasdir = false;

        try {
            $res = $this->service->listFolder($path);
            if ($res) {
                $items = $res->getItems();
                foreach ($items as $raw) {
                    if ($raw instanceof FolderMetadata) {

The class Kunnu\Dropbox\Models\FolderMetadata does not exist. Did you forget a USE statement, or did you not list all dependencies?

                        $hasdir = true;
                        break;
                    }
                }
            }
        } catch (DropboxClientException $e) {

The class Kunnu\Dropbox\Exceptions\DropboxClientException does not exist. Did you forget a USE statement, or did you not list all dependencies?

            $this->setError('Dropbox error: '.$e->getMessage());
        }

        return $hasdir;
    }

    /**
     * Return object width and height
     * Ususaly used for images, but can be realize for video etc...
     *
     * @param string $path file path
     * @param string $mime file mime type
     *
     * @return string
     *
     * @author Naoki Sawada
     **/
    protected function _dimensions($path, $mime)
    {
        if (strpos($mime, 'image') !== 0) {
            return '';
        }
        $ret = '';

        if ($data = $this->_getContents($path)) {
            $tmp = $this->getTempFile();
            file_put_contents($tmp, $data);
            $size = getimagesize($tmp);
            if ($size) {

The expression $size of type array is implicitly converted to a boolean; are you sure this is intended? If so, consider using ! empty($expr) instead to make it clear that you intend to check for an array without elements.

                return $size[0].'x'.$size[1];
            }
        }

        return $ret;
    }

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

    /**
     * Return files list in directory.
     *
     * @param string $path dir path
     *
     * @return array
     *
     * @author Naoki Sawada
     **/
    protected function _scandir($path)
    {
        return isset($this->dirsCache[$path])
            ? $this->dirsCache[$path]
            : $this->cacheDir($path);
    }

    /**
     * Open file and return file pointer.
     *
     * @param string $path  file path
     * @param bool   $write open file for writing

There is no parameter named $write. Was it maybe removed?

     *
     * @return resource|false
     *
     * @author Naoki Sawada
     **/
    protected function _fopen($path, $mode = 'rb')
    {
        if ($mode === 'rb' || $mode === 'r') {
            if ($link = $this->service->getTemporaryLink($path)) {
                $access_token = $this->service->getAccessToken();
                if ($access_token) {
                    $data = [
                                'target' => $link->getLink(),
                                'headers' => ['Authorization: Bearer '.$access_token],
                        ];

                    return elFinder::getStreamByUrl($data);
                }
            }
        }

        return false;
    }

    /**
     * Close opened file.
     *
     * @param resource $fp file pointer
     *
     * @return bool
     *
     * @author Naoki Sawada
     **/
    protected function _fclose($fp, $path = '')
    {
        fclose($fp);
    }

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

    /**
     * Create dir and return created dir path or false on failed.
     *
     * @param string $path parent dir path
     * @param string $name new directory name
     *
     * @return string|bool
     *
     * @author Naoki Sawada
     **/
    protected function _mkdir($path, $name)

This method seems to be duplicated in your project.

    {
        try {
            return $this->service->createFolder($this->_db_joinName($path, $name))->getPathLower();

$path is of type string, but the function expects a object<unknown>.

$name is of type string, but the function expects a object<unknown>.

        } catch (DropboxClientException $e) {

The class Kunnu\Dropbox\Exceptions\DropboxClientException does not exist. Did you forget a USE statement, or did you not list all dependencies?

            return $this->setError('Dropbox error: '.$e->getMessage());
        }
    }

    /**
     * Create file and return it's path or false on failed.
     *
     * @param string $path parent dir path
     * @param string $name new file name
     *
     * @return string|bool
     *
     * @author Naoki Sawada
     **/
    protected function _mkfile($path, $name)
    {
        return $this->_save(tmpfile(), $path, $name, []);
    }

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

    /**
     * Copy file into another file.
     *
     * @param string $source    source file path
     * @param string $targetDir target directory path
     * @param string $name      new file name
     *
     * @return bool
     *
     * @author Naoki Sawada
     **/
    protected function _copy($source, $targetDir, $name)

This method seems to be duplicated in your project.

    {
        try {
            $this->service->copy($source, $this->_db_joinName($targetDir, $name))->getPathLower();

$targetDir is of type string, but the function expects a object<unknown>.

$name is of type string, but the function expects a object<unknown>.

        } catch (DropboxClientException $e) {

The class Kunnu\Dropbox\Exceptions\DropboxClientException does not exist. Did you forget a USE statement, or did you not list all dependencies?

            return $this->setError('Dropbox error: '.$e->getMessage());
        }

        return true;
    }

    /**
     * Move file into another parent dir.
     * Return new file path or false.
     *
     * @param string $source source file path
     * @param string $target target dir path

There is no parameter named $target. Did you maybe mean $targetDir?

     * @param string $name   file name
     *
     * @return string|bool
     *
     * @author Naoki Sawada
     **/
    protected function _move($source, $targetDir, $name)

This method seems to be duplicated in your project.

    {
        try {
            return $this->service->move($source, $this->_db_joinName($targetDir, $name))->getPathLower();

$name is of type string, but the function expects a object<unknown>.

        } catch (DropboxClientException $e) {

The class Kunnu\Dropbox\Exceptions\DropboxClientException does not exist. Did you forget a USE statement, or did you not list all dependencies?

            return $this->setError('Dropbox error: '.$e->getMessage());
        }
    }

    /**
     * Remove file.
     *
     * @param string $path file path
     *
     * @return bool
     *
     * @author Naoki Sawada
     **/
    protected function _unlink($path)
    {
        try {
            $this->service->delete($path);

            return true;
        } catch (DropboxClientException $e) {

The class Kunnu\Dropbox\Exceptions\DropboxClientException does not exist. Did you forget a USE statement, or did you not list all dependencies?

            return $this->setError('Dropbox error: '.$e->getMessage());
        }

        return true;

return true; does not seem to be reachable.

    }

    /**
     * Remove dir.
     *
     * @param string $path dir path
     *
     * @return bool
     *
     * @author Naoki Sawada
     **/
    protected function _rmdir($path)
    {
        return $this->_unlink($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   $dir  target dir path

There is no parameter named $dir. Was it maybe removed?

     * @param string   $name file name
     * @param array    $stat file stat (required by some virtual fs)
     *
     * @return bool|string
     *
     * @author Naoki Sawada
     **/
    protected function _save($fp, $path, $name, $stat)
    {
        try {
            $info = stream_get_meta_data($fp);
            if (empty($info['uri']) || preg_match('#^[a-z0-9.-]+://#', $info['uri'])) {
                if ($filepath = $this->getTempFile()) {

This code seems to be duplicated across your project.

                    $_fp = fopen($filepath, 'wb');
                    stream_copy_to_stream($fp, $_fp);
                    fclose($_fp);
                }
            } else {
                $filepath = $info['uri'];
            }
            $dropboxFile = new DropboxFile($filepath);
            if ($name === '') {
                $dir = $this->_dirname($path);

$dir is not used, you could remove the assignment.

                $name = $this->_basename($path);

$name is not used, you could remove the assignment.

                $fullpath = $path;
            } else {
                $dir = $path;

$dir is not used, you could remove the assignment.

                $fullpath = $this->_db_joinName($path, $name);

$path is of type string, but the function expects a object<unknown>.

$name is of type string, but the function expects a object<unknown>.

            }

            return $this->service->upload($dropboxFile, $fullpath, ['mode' => 'overwrite'])->getPathLower();
        } catch (DropboxClientException $e) {

The class Kunnu\Dropbox\Exceptions\DropboxClientException does not exist. Did you forget a USE statement, or did you not list all dependencies?

            return $this->setError('Dropbox error: '.$e->getMessage());
        }
    }

    /**
     * Get file contents.
     *
     * @param string $path file path
     *
     * @return string|false
     *
     * @author Naoki Sawada
     **/
    protected function _getContents($path)
    {
        $contents = '';

        try {
            $file = $this->service->download($path);
            $contents = $file->getContents();
        } catch (Exception $e) {
            return $this->setError('Dropbox error: '.$e->getMessage());
        }

        return $contents;
    }

    /**
     * Write a string to a file.
     *
     * @param string $path    file path
     * @param string $content new file content
     *
     * @return bool
     *
     * @author Naoki Sawada
     **/
    protected function _filePutContents($path, $content)

This method seems to be duplicated in your project.

    {
        $res = false;

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

        return $res;
    }

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

84% of this comment could be valid code. Did you maybe forget this after debugging?

        return [];
    }

    /**
     * chmod implementation.
     *
     * @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 $this->archivers)
     *
     * @return true
     *
     * @author Dmitry (dio) Levashov
     * @author Alexey Sukhotin
     **/
    protected function _unpack($path, $arc)

The parameter $path is not used and could be removed.

The parameter $arc is not used and could be removed.

    {
        die('Not yet implemented. (_unpack)');

The method _unpack() contains an exit expression.

        //return false;
    }

    /**
     * Recursive symlinks search.
     *
     * @param string $path file/dir path
     *
     * @return bool
     *
     * @author Dmitry (dio) Levashov
     **/
    protected function _findSymlinks($path)

The parameter $path is not used and could be removed.

    {
        die('Not yet implemented. (_findSymlinks)');

The method _findSymlinks() contains an exit expression.

    }

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

The method _extract() contains an exit expression.

    }

    /**
     * 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)');

The method _archive() contains an exit expression.

    }

    /**
     * Get dat(Dropbox metadata) from Dropbox.
     *
     * @param string $path
     *
     * @return object Dropbox metadata
     */
    private function _db_getFile($path, $fields = '')

The parameter $fields is not used and could be removed.

    {
        if ($path === '/') {
            return true;
        }

        $res = false;
        try {
            $file = $this->service->getMetadata($path, $this->FETCH_OPTIONS);
            if ($file instanceof FolderMetadata || $file instanceof FileMetadata) {

The class Kunnu\Dropbox\Models\FolderMetadata does not exist. Did you forget a USE statement, or did you not list all dependencies?

The class Kunnu\Dropbox\Models\FileMetadata does not exist. Did you forget a USE statement, or did you not list all dependencies?

                $res = $file;
            }

            return $res;
        } catch (DropboxClientException $e) {

The class Kunnu\Dropbox\Exceptions\DropboxClientException does not exist. Did you forget a USE statement, or did you not list all dependencies?

            return false;
        }
    }
} // END class