Esempio n. 1
0
 /**
  * restore encryption keys from trash bin
  *
  * @param \OC\Files\View $view
  * @param string $file complete path to file
  * @param string $filename name of file
  * @param string $uniqueFilename new file name to restore the file without overwriting existing files
  * @param string $location location of file
  * @param int $timestamp deleteion time
  *
  */
 private static function restoreEncryptionKeys($view, $file, $filename, $uniqueFilename, $location, $timestamp)
 {
     // Take care of encryption keys TODO! Get '.key' in file between file name and delete date (also for permanent delete!)
     if (\OCP\App::isEnabled('files_encryption')) {
         $user = \OCP\User::getUser();
         $rootView = new \OC\Files\View('/');
         $target = \OC\Files\Filesystem::normalizePath('/' . $location . '/' . $uniqueFilename);
         list($owner, $ownerPath) = self::getUidAndFilename($target);
         $util = new \OCA\Encryption\Util(new \OC\Files\View('/'), $user);
         if ($util->isSystemWideMountPoint($ownerPath)) {
             $baseDir = '/files_encryption/';
         } else {
             $baseDir = $owner . '/files_encryption/';
         }
         $path_parts = pathinfo($file);
         $source_location = $path_parts['dirname'];
         if ($view->is_dir('/files_trashbin/keyfiles/' . $file)) {
             if ($source_location != '.') {
                 $keyfile = \OC\Files\Filesystem::normalizePath($user . '/files_trashbin/keyfiles/' . $source_location . '/' . $filename);
                 $sharekey = \OC\Files\Filesystem::normalizePath($user . '/files_trashbin/share-keys/' . $source_location . '/' . $filename);
             } else {
                 $keyfile = \OC\Files\Filesystem::normalizePath($user . '/files_trashbin/keyfiles/' . $filename);
                 $sharekey = \OC\Files\Filesystem::normalizePath($user . '/files_trashbin/share-keys/' . $filename);
             }
         } else {
             $keyfile = \OC\Files\Filesystem::normalizePath($user . '/files_trashbin/keyfiles/' . $source_location . '/' . $filename . '.key');
         }
         if ($timestamp) {
             $keyfile .= '.d' . $timestamp;
         }
         // disable proxy to prevent recursive calls
         $proxyStatus = \OC_FileProxy::$enabled;
         \OC_FileProxy::$enabled = false;
         if ($rootView->file_exists($keyfile)) {
             // handle directory
             if ($rootView->is_dir($keyfile)) {
                 // handle keyfiles
                 $rootView->rename($keyfile, $baseDir . '/keyfiles/' . $ownerPath);
                 // handle share-keys
                 if ($timestamp) {
                     $sharekey .= '.d' . $timestamp;
                 }
                 $rootView->rename($sharekey, $baseDir . '/share-keys/' . $ownerPath);
             } else {
                 // handle keyfiles
                 $rootView->rename($keyfile, $baseDir . '/keyfiles/' . $ownerPath . '.key');
                 // handle share-keys
                 $ownerShareKey = \OC\Files\Filesystem::normalizePath($user . '/files_trashbin/share-keys/' . $source_location . '/' . $filename . '.' . $user . '.shareKey');
                 if ($timestamp) {
                     $ownerShareKey .= '.d' . $timestamp;
                 }
                 // move only owners key
                 $rootView->rename($ownerShareKey, $baseDir . '/share-keys/' . $ownerPath . '.' . $user . '.shareKey');
                 // try to re-share if file is shared
                 $filesystemView = new \OC\Files\View('/');
                 $session = new \OCA\Encryption\Session($filesystemView);
                 $util = new \OCA\Encryption\Util($filesystemView, $user);
                 // fix the file size
                 $absolutePath = \OC\Files\Filesystem::normalizePath('/' . $owner . '/files/' . $ownerPath);
                 $util->fixFileSize($absolutePath);
                 // get current sharing state
                 $sharingEnabled = \OCP\Share::isEnabled();
                 // get users sharing this file
                 $usersSharing = $util->getSharingUsersArray($sharingEnabled, $target);
                 // Attempt to set shareKey
                 $util->setSharedFileKeyfiles($session, $usersSharing, $target);
             }
         }
         // enable proxy
         \OC_FileProxy::$enabled = $proxyStatus;
     }
 }