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✏️ Editing: elFinderFlysystemGoogleDriveNetmount.php

<?php

use League\Flysystem\Filesystem;
use League\Flysystem\Adapter\Local;
use League\Flysystem\Cached\CachedAdapter;
use League\Flysystem\Cached\Storage\Adapter as ACache;
use Hypweb\Flysystem\GoogleDrive\GoogleDriveAdapter;
use Hypweb\Flysystem\Cached\Extra\Hasdir;
use Hypweb\Flysystem\Cached\Extra\DisableEnsureParentDirectories;
use Hypweb\elFinderFlysystemDriverExt\Driver as ExtDriver;

elFinder::$netDrivers['googledrive'] = 'FlysystemGoogleDriveNetmount';

if (!class_exists('elFinderVolumeFlysystemGoogleDriveCache', false)) {
    class elFinderVolumeFlysystemGoogleDriveCache extends ACache
    {
        use Hasdir;
        use DisableEnsureParentDirectories;
    }
}

class elFinderVolumeFlysystemGoogleDriveNetmount extends ExtDriver
{

public function __construct()
    {
        parent::__construct();

$opts = array(
            'acceptedName' => '#^[^/\\?*:|"<>]*[^./\\?*:|"<>]$#',
            'rootCssClass' => 'elfinder-navbar-root-googledrive',
            'gdAlias' => '%s@GDrive',
            'gdCacheDir' => __DIR__ . '/.tmp',
            'gdCachePrefix' => 'gd-',
            'gdCacheExpire' => 600
        );

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

/**
     * Prepare driver before mount volume.
     * Return true if volume is ready.
     *
     * @return bool
     **/
    protected function init()
    {
        if (empty($this->options['icon'])) {
            $this->options['icon'] = true;
        }
        if ($res = parent::init()) {
            if ($this->options['icon'] === true) {
                unset($this->options['icon']);
            }
            // enable command archive
            $this->options['useRemoteArchive'] = true;
        }
        return $res;
    }

/**
     * Prepare
     * Call from elFinder::netmout() before volume->mount()
     *
     * @param $options
     *
     * @return Array
     * @author Naoki Sawada
     */
    public function netmountPrepare($options)
    {
        if (empty($options['client_id']) && defined('ELFINDER_GOOGLEDRIVE_CLIENTID')) {
            $options['client_id'] = ELFINDER_GOOGLEDRIVE_CLIENTID;
        }
        if (empty($options['client_secret']) && defined('ELFINDER_GOOGLEDRIVE_CLIENTSECRET')) {
            $options['client_secret'] = ELFINDER_GOOGLEDRIVE_CLIENTSECRET;
        }

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

try {
            $client = new \Google_Client();
            $client->setClientId($options['client_id']);
            $client->setClientSecret($options['client_secret']);

if ($options['pass'] === 'reauth') {
                $options['pass'] = '';
                $this->session->set('GoogleDriveAuthParams', [])->set('GoogleDriveTokens', []);
            } else if ($options['pass'] === 'googledrive') {
                $options['pass'] = '';
            }

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

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

$rootObj = $service = null;
            if ($aToken) {
                try {
                    $client->setAccessToken($aToken);
                    if ($client->isAccessTokenExpired()) {
                        $aToken = array_merge($aToken, $client->fetchAccessTokenWithRefreshToken());
                        $client->setAccessToken($aToken);
                    }
                    $service = new \Google_Service_Drive($client);
                    $rootObj = $service->files->get('root');

$options['access_token'] = $aToken;
                    $this->session->set('GoogleDriveAuthParams', $options);

} catch (Exception $e) {
                    $aToken = [];
                    $options['access_token'] = [];
                    if ($options['user'] !== 'init') {
                        $this->session->set('GoogleDriveAuthParams', $options);
                        return array('exit' => true, 'error' => elFinder::ERROR_REAUTH_REQUIRE);
                    }
                }

}

$itpCare = isset($options['code']);
            $code = $itpCare? $options['code'] : (isset($_GET['code'])? $_GET['code'] : '');
            if ($code || $options['user'] === 'init') {
                if (empty($options['url'])) {
                    $options['url'] = elFinder::getConnectorUrl();
                }

if (isset($options['id'])) {
                    $callback = $options['url'] . (strpos($options['url'], '?') !== false? '&' : '?') . 'cmd=netmount&protocol=googledrive&host=' . ($options['id'] === 'elfinder'? '1' : $options['id']);
                    $client->setRedirectUri($callback);
                }

if (!$aToken && empty($code)) {
                    $client->setScopes([Google_Service_Drive::DRIVE]);
                    if (!empty($options['offline'])) {
                        $client->setApprovalPrompt('force');
                        $client->setAccessType('offline');
                    }
                    $url = $client->createAuthUrl();

$html = '<input id="elf-volumedriver-googledrive-host-btn" class="ui-button ui-widget ui-state-default ui-corner-all ui-button-text-only" value="{msg:btnApprove}" type="button">';
                    $html .= '<script>
                        jQuery("#' . $options['id'] . '").elfinder("instance").trigger("netmount", {protocol: "googledrive", mode: "makebtn", url: "' . $url . '"});
                    </script>';
                    if (empty($options['pass']) && $options['host'] !== '1') {
                        $options['pass'] = 'return';
                        $this->session->set('GoogleDriveAuthParams', $options);
                        return array('exit' => true, 'body' => $html);
                    } else {
                        $out = array(
                            'node' => $options['id'],
                            'json' => '{"protocol": "googledrive", "mode": "makebtn", "body" : "' . str_replace($html, '"', '\\"') . '", "error" : "' . elFinder::ERROR_ACCESS_DENIED . '"}',
                            'bind' => 'netmount'
                        );
                        return array('exit' => 'callback', 'out' => $out);
                    }
                } else {
                    if ($code) {
                        if (!empty($options['id'])) {
                            $aToken = $client->fetchAccessTokenWithAuthCode($code);
                            $options['access_token'] = $aToken;
                            unset($options['code']);
                            $this->session->set('GoogleDriveTokens', $aToken)->set('GoogleDriveAuthParams', $options);
                            $out = array(
                                'node' => $options['id'],
                                'json' => '{"protocol": "googledrive", "mode": "done", "reset": 1}',
                                'bind' => 'netmount'
                            );
                        } else {
                            $nodeid = ($_GET['host'] === '1')? 'elfinder' : $_GET['host'];
                            $out = array(
                                'node' => $nodeid,
                                'json' => json_encode(array(
                                    'protocol' => 'googledrive',
                                    'host' => $nodeid,
                                    'mode' => 'redirect',
                                    'options' => array(
                                        'id' => $nodeid,
                                        'code'=> $code
                                    )
                                )),
                                'bind' => 'netmount'
                            );
                        }
                        if (!$itpCare) {
                            return array('exit' => 'callback', 'out' => $out);
                        } else {
                            return array('exit' => true, 'body' => $out['json']);
                        }
                    }
                    $folders = [];
                    foreach ($service->files->listFiles([
                        'pageSize' => 1000,
                        'q' => 'trashed = false and mimeType = "application/vnd.google-apps.folder"'
                    ]) as $f) {
                        $folders[$f->getId()] = $f->getName();
                    }
                    natcasesort($folders);
                    $folders = ['root' => $rootObj->getName()] + $folders;
                    $folders = json_encode($folders);
                    $json = '{"protocol": "googledrive", "mode": "done", "folders": ' . $folders . '}';
                    $options['pass'] = 'return';
                    $html = 'Google.com';
                    $html .= '<script>
                        jQuery("#' . $options['id'] . '").elfinder("instance").trigger("netmount", ' . $json . ');
                    </script>';
                    $this->session->set('GoogleDriveAuthParams', $options);
                    return array('exit' => true, 'body' => $html);
                }
            }
        } catch (Exception $e) {
            $this->session->remove('GoogleDriveAuthParams')->remove('GoogleDriveTokens');
            if (empty($options['pass'])) {
                return array('exit' => true, 'body' => '{msg:' . elFinder::ERROR_ACCESS_DENIED . '}' . ' ' . $e->getMessage());
            } else {
                return array('exit' => true, 'error' => [elFinder::ERROR_ACCESS_DENIED, $e->getMessage()]);
            }
        }

if (!$aToken) {
            return array('exit' => true, 'error' => elFinder::ERROR_REAUTH_REQUIRE);
        }

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

try {
            $file = $service->files->get($options['path']);
            $options['alias'] = sprintf($this->options['gdAlias'], $file->getName());
            if (!empty($this->options['netkey'])) {
                elFinder::$instance->updateNetVolumeOption($this->options['netkey'], 'alias', $this->options['alias']);
            }
        } catch (Google_Service_Exception $e) {
            $err = json_decode($e->getMessage(), true);
            if (isset($err['error']) && $err['error']['code'] == 404) {
                return array('exit' => true, 'error' => [elFinder::ERROR_TRGDIR_NOT_FOUND, $options['path']]);
            } else {
                return array('exit' => true, 'error' => $e->getMessage());
            }
        } catch (Exception $e) {
            return array('exit' => true, 'error' => $e->getMessage());
        }

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

return $options;
    }

/**
     * process of on netunmount
     * Drop table `dropbox` & rm thumbs
     *
     * @param $netVolumes
     * @param $key
     *
     * @return bool
     * @internal param array $options
     */
    public function netunmount($netVolumes, $key)
    {
        $cache = $this->options['gdCacheDir'] . DIRECTORY_SEPARATOR . $this->options['gdCachePrefix'] . $this->netMountKey;
        if (file_exists($cache) && is_writeable($cache)) {
            unlink($cache);
        }
        if ($tmbs = glob($this->tmbPath . DIRECTORY_SEPARATOR . $this->netMountKey . '*')) {
            foreach ($tmbs as $file) {
                unlink($file);
            }
        }
        return true;
    }

/**
     * "Mount" volume.
     * Return true if volume available for read or write,
     * false - otherwise
     *
     * @param array $opts
     *
     * @return bool
     * @author Naoki Sawada
     */
    public function mount(array $opts)
    {
        $creds = null;
        if (isset($opts['access_token'])) {
            $this->netMountKey = md5(join('-', array('googledrive', $opts['path'], (isset($opts['access_token']['refresh_token']) ? $opts['access_token']['refresh_token'] : $opts['access_token']['access_token']))));
        }

$client = new \Google_Client();
        $client->setClientId($opts['client_id']);
        $client->setClientSecret($opts['client_secret']);

if (!empty($opts['access_token'])) {
            $client->setAccessToken($opts['access_token']);
        }
        if ($this->needOnline && $client->isAccessTokenExpired()) {
            try {
                $creds = $client->fetchAccessTokenWithRefreshToken();
            } catch (LogicException $e) {
                $this->session->remove('GoogleDriveAuthParams');
                throw $e;
            }
        }

$service = new \Google_Service_Drive($client);

// If path is not set, use the root
        if (!isset($opts['path']) || $opts['path'] === '') {
            $opts['path'] = 'root';
        }

$googleDrive = new GoogleDriveAdapter($service, $opts['path'], ['useHasDir' => true]);

$opts['fscache'] = null;
        if ($this->options['gdCacheDir'] && is_writeable($this->options['gdCacheDir'])) {
            if ($this->options['gdCacheExpire']) {
                $opts['fscache'] = new elFinderVolumeFlysystemGoogleDriveCache(new Local($this->options['gdCacheDir']), $this->options['gdCachePrefix'] . $this->netMountKey, $this->options['gdCacheExpire']);
            }
        }
        if ($opts['fscache']) {
            $filesystem = new Filesystem(new CachedAdapter($googleDrive, $opts['fscache']));
        } else {
            $filesystem = new Filesystem($googleDrive);
        }

$opts['driver'] = 'FlysystemExt';
        $opts['filesystem'] = $filesystem;
        $opts['separator'] = '/';
        $opts['checkSubfolders'] = true;
        if (!isset($opts['alias'])) {
            $opts['alias'] = 'GoogleDrive';
        }

if ($res = parent::mount($opts)) {
            // update access_token of session data
            if ($creds) {
                $netVolumes = $this->session->get('netvolume');
                $netVolumes[$this->netMountKey]['access_token'] = array_merge($netVolumes[$this->netMountKey]['access_token'], $creds);
                $this->session->set('netvolume', $netVolumes);
            }
        }

return $res;
    }

/**
     * @inheritdoc
     */
    protected function tmbname($stat)
    {
        return $this->netMountKey . substr(substr($stat['hash'], strlen($this->id)), -38) . $stat['ts'] . '.png';
    }

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

return $res;
    }
}

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