<?php

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/**

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* Simple elFinder driver for GoogleDrive

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* google-api-php-client-2.x or above.

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*

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* @author Dmitry (dio) Levashov

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* @author Cem (discofever)

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**/

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class elFinderVolumeGoogleDrive extends elFinderVolumeDriver

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{

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/**

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* Driver id

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* Must be started from letter and contains [a-z0-9]

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* Used as part of volume id.

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*

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* @var string

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**/

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protected $driverId = 'gd';

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/**

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* Google API client object.

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*

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* @var object

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**/

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protected $client = null;

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/**

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* GoogleDrive service object.

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*

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* @var object

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**/

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protected $service = null;

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/**

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* Cache of parents of each directories.

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*

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* @var array

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*/

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protected $parents = [];

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/**

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* Cache of chiled directories of each directories.

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*

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* @var array

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*/

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protected $directories = null;

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/**

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* Cache of itemID => name of each items.

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*

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* @var array

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*/

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protected $names = [];

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/**

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* MIME tyoe of directory.

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*

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* @var string

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*/

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const DIRMIME = 'application/vnd.google-apps.folder';

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/**

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* Fetch fields for list.

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*

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* @var string

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*/

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const FETCHFIELDS_LIST = 'files(id,name,mimeType,modifiedTime,parents,permissions,size,imageMediaMetadata(height,width),thumbnailLink,webContentLink,webViewLink),nextPageToken';

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/**

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* Fetch fields for get.

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*

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* @var string

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*/

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const FETCHFIELDS_GET = 'id,name,mimeType,modifiedTime,parents,permissions,size,imageMediaMetadata(height,width),thumbnailLink,webContentLink,webViewLink';

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/**

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* Directory for tmp files

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* If not set driver will try to use tmbDir as tmpDir.

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*

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* @var string

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**/

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protected $tmp = '';

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/**

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* Net mount key.

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*

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* @var string

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**/

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public $netMountKey = '';

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/**

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* Current token expires

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*

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* @var integer

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**/

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private $expires;

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/**

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* Constructor

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* Extend options with required fields.

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*

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* @author Dmitry (dio) Levashov

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* @author Cem (DiscoFever)

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**/

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public function __construct()

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{

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$opts = [

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'client_id' => '',

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'client_secret' => '',

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'access_token' => [],

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'refresh_token' => '',

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'serviceAccountConfigFile' => '',

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'root' => 'My Drive',

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'gdAlias' => '%s@GDrive',

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'googleApiClient' => '',

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'path' => '/',

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'tmbPath' => '',

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'separator' => '/',

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'useGoogleTmb' => true,

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'acceptedName' => '#.#',

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

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'publishPermission' => [

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'type' => 'anyone',

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'role' => 'reader',

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'withLink' => true,

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],

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'appsExportMap' => [

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'application/vnd.google-apps.document' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',

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'application/vnd.google-apps.spreadsheet' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',

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'application/vnd.google-apps.drawing' => 'application/pdf',

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'application/vnd.google-apps.presentation' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',

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'application/vnd.google-apps.script' => 'application/vnd.google-apps.script+json',

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'default' => 'application/pdf',

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],

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];

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

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

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}

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

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/* ORIGINAL FUNCTIONS */

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

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/**

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* Get Parent ID, Item ID, Parent Path as an array from path.

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*

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* @param string $path

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*

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* @return array

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*/

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protected function _gd_splitPath($path)

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{

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$path = trim($path, '/');

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$pid = '';

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if ($path === '') {

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$id = 'root';

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$parent = '';

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} else {

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$path = str_replace('\\/', chr(0), $path);

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$paths = explode('/', $path);

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$id = array_pop($paths);

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$id = str_replace(chr(0), '/', $id);

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if ($paths) {

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$parent = '/' . implode('/', $paths);

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$pid = array_pop($paths);

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} else {

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$rootid = ($this->root === '/') ? 'root' : trim($this->root, '/');

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if ($id === $rootid) {

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$parent = '';

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} else {

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$parent = $this->root;

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$pid = $rootid;

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}

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}

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}

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return array($pid, $id, $parent);

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}

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/**

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* Drive query and fetchAll.

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*

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* @param string $sql

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*

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* @return bool|array

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*/

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private function _gd_query($opts)

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{

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$result = [];

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$pageToken = null;

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$parameters = [

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'fields' => self::FETCHFIELDS_LIST,

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'pageSize' => 1000,

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'spaces' => 'drive',

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];

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if (is_array($opts)) {

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$parameters = array_merge($parameters, $opts);

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}

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do {

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try {

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if ($pageToken) {

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$parameters['pageToken'] = $pageToken;

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}

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$files = $this->service->files->listFiles($parameters);

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$result = array_merge($result, $files->getFiles());

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$pageToken = $files->getNextPageToken();

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} catch (Exception $e) {

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$pageToken = null;

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}

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} while ($pageToken);

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return $result;

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}

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/**

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* Get dat(googledrive metadata) from GoogleDrive.

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*

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* @param string $path

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*

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* @return array googledrive metadata

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*/

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private function _gd_getFile($path, $fields = '')

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{

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list(, $itemId) = $this->_gd_splitPath($path);

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if (!$fields) {

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$fields = self::FETCHFIELDS_GET;

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}

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try {

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$file = $this->service->files->get($itemId, ['fields' => $fields]);

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if ($file instanceof Google_Service_Drive_DriveFile) {

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return $file;

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} else {

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return [];

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}

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} catch (Exception $e) {

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return [];

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}

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}

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/**

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* Parse line from googledrive metadata output and return file stat (array).

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*

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* @param array $raw line from ftp_rawlist() output

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*

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* @return array

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* @author Dmitry Levashov

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**/

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protected function _gd_parseRaw($raw)

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{

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$stat = [];

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$stat['iid'] = isset($raw['id']) ? $raw['id'] : 'root';

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$stat['name'] = isset($raw['name']) ? $raw['name'] : '';

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if (isset($raw['modifiedTime'])) {

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$stat['ts'] = strtotime($raw['modifiedTime']);

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}

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if ($raw['mimeType'] === self::DIRMIME) {

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

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$stat['size'] = 0;

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} else {

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$stat['mime'] = $raw['mimeType'] == 'image/bmp' ? 'image/x-ms-bmp' : $raw['mimeType'];

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$stat['size'] = (int)$raw['size'];

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if ($size = $raw->getImageMediaMetadata()) {

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

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

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}

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$published = $this->_gd_isPublished($raw);

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

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if (isset($raw['thumbnailLink'])) {

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if ($published) {

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$stat['tmb'] = 'drive.google.com/thumbnail?authuser=0&sz=s' . $this->options['tmbSize'] . '&id=' . $raw['id'];

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} else {

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$stat['tmb'] = substr($raw['thumbnailLink'], 8); // remove "https://"

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}

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} else {

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$stat['tmb'] = '';

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}

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}

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if ($published) {

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$stat['url'] = $this->_gd_getLink($raw);

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} elseif (!$this->disabledGetUrl) {

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$stat['url'] = '1';

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}

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}

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return $stat;

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}

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/**

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* Get dat(googledrive metadata) from GoogleDrive.

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*

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* @param string $path

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*

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* @return array googledrive metadata

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*/

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private function _gd_getNameByPath($path)

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{

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list(, $itemId) = $this->_gd_splitPath($path);

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if (!$this->names) {

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$this->_gd_getDirectoryData();

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}

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return isset($this->names[$itemId]) ? $this->names[$itemId] : '';

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}

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/**

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* Make cache of $parents, $names and $directories.

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*

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* @param bool $usecache

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*/

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protected function _gd_getDirectoryData($usecache = true)

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{

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if ($usecache) {

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$cache = $this->session->get($this->id . $this->netMountKey, []);

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if ($cache) {

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$this->parents = $cache['parents'];

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$this->names = $cache['names'];

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$this->directories = $cache['directories'];

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[325] Fix | Delete

return;

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}

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}

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$root = '';

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if ($this->root === '/') {

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// get root id

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if ($res = $this->_gd_getFile('/', 'id')) {

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$root = $res->getId();

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}

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}

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$data = [];

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$opts = [

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'fields' => 'files(id, name, parents)',

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'q' => sprintf('trashed=false and mimeType="%s"', self::DIRMIME),

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];

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$res = $this->_gd_query($opts);

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foreach ($res as $raw) {

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if ($parents = $raw->getParents()) {

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$id = $raw->getId();

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$this->parents[$id] = $parents;

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$this->names[$id] = $raw->getName();

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foreach ($parents as $p) {

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if (isset($data[$p])) {

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$data[$p][] = $id;

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} else {

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$data[$p] = [$id];

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}

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}

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}

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}

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if ($root && isset($data[$root])) {

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$data['root'] = $data[$root];

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}

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$this->directories = $data;

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$this->session->set($this->id . $this->netMountKey, [

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'parents' => $this->parents,

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'names' => $this->names,

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'directories' => $this->directories,

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]);

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}

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[368] Fix | Delete

/**

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* Get descendants directories.

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*

[371] Fix | Delete

* @param string $itemId

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*

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* @return array

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*/

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protected function _gd_getDirectories($itemId)

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{

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$ret = [];

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if ($this->directories === null) {

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$this->_gd_getDirectoryData();

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}

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$data = $this->directories;

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if (isset($data[$itemId])) {

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$ret = $data[$itemId];

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foreach ($data[$itemId] as $cid) {

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$ret = array_merge($ret, $this->_gd_getDirectories($cid));

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}

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}

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return $ret;

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}

[391] Fix | Delete

[392] Fix | Delete

/**

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* Get ID based path from item ID.

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*

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* @param string $id

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*

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* @return array

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*/

[399] Fix | Delete

protected function _gd_getMountPaths($id)

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{

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$root = false;

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if ($this->directories === null) {

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$this->_gd_getDirectoryData();

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}

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list($pid) = explode('/', $id, 2);

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$path = $id;

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if ('/' . $pid === $this->root) {

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$root = true;

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} elseif (!isset($this->parents[$pid])) {

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$root = true;

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$path = ltrim(substr($path, strlen($pid)), '/');

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}

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$res = [];

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if ($root) {

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if ($this->root === '/' || strpos('/' . $path, $this->root) === 0) {

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$res = [(strpos($path, '/') === false) ? '/' : ('/' . $path)];

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}

[418] Fix | Delete

} else {

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foreach ($this->parents[$pid] as $p) {

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$_p = $p . '/' . $path;

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$res = array_merge($res, $this->_gd_getMountPaths($_p));

[422] Fix | Delete

}

[423] Fix | Delete

}

[424] Fix | Delete

[425] Fix | Delete

return $res;

[426] Fix | Delete

}

[427] Fix | Delete

[428] Fix | Delete

/**

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* Return is published.

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*

[431] Fix | Delete

* @param object $file

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*

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* @return bool

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*/

[435] Fix | Delete

protected function _gd_isPublished($file)

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{

[437] Fix | Delete

$res = false;

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$pType = $this->options['publishPermission']['type'];

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$pRole = $this->options['publishPermission']['role'];

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if ($permissions = $file->getPermissions()) {

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foreach ($permissions as $permission) {

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if ($permission->type === $pType && $permission->role === $pRole) {

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$res = true;

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break;

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}

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}

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}

[448] Fix | Delete

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return $res;

[450] Fix | Delete

}

[451] Fix | Delete

[452] Fix | Delete

/**

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* return item URL link.

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*

[455] Fix | Delete

* @param object $file

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*

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* @return string

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*/

[459] Fix | Delete

protected function _gd_getLink($file)

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{

[461] Fix | Delete

if (strpos($file->mimeType, 'application/vnd.google-apps.') !== 0) {

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if ($url = $file->getWebContentLink()) {

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return str_replace('export=download', 'export=media', $url);

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}

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}

[466] Fix | Delete

if ($url = $file->getWebViewLink()) {

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return $url;

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}

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return '';

[471] Fix | Delete

}

[472] Fix | Delete

[473] Fix | Delete

/**

[474] Fix | Delete

* Get download url.

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*

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* @param Google_Service_Drive_DriveFile $file

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*

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* @return string|false

[479] Fix | Delete

*/

[480] Fix | Delete

protected function _gd_getDownloadUrl($file)

[481] Fix | Delete

{

[482] Fix | Delete

if (strpos($file->mimeType, 'application/vnd.google-apps.') !== 0) {

[483] Fix | Delete

return 'https://www.googleapis.com/drive/v3/files/' . $file->getId() . '?alt=media';

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} else {

[485] Fix | Delete

$mimeMap = $this->options['appsExportMap'];

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if (isset($mimeMap[$file->getMimeType()])) {

[487] Fix | Delete

$mime = $mimeMap[$file->getMimeType()];

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} else {

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$mime = $mimeMap['default'];

[490] Fix | Delete

}

[491] Fix | Delete

$mime = rawurlencode($mime);

[492] Fix | Delete

[493] Fix | Delete

return 'https://www.googleapis.com/drive/v3/files/' . $file->getId() . '/export?mimeType=' . $mime;

[494] Fix | Delete

}

[495] Fix | Delete

[496] Fix | Delete

return false;

[497] Fix | Delete

}

[498] Fix | Delete

[499] Fix | Delete