/**
* 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;
}
}
