/**
* check if app is shipped
*
* @param string $appId the id of the app to check
* @return bool
*
* Check if an app that is installed is a shipped app or installed from the appstore.
*/
public static function isShipped($appId)
{
if (is_null(self::$shippedApps)) {
$shippedJson = \OC::$SERVERROOT . '/core/shipped.json';
if (file_exists($shippedJson)) {
self::$shippedApps = json_decode(file_get_contents($shippedJson), true);
self::$shippedApps = self::$shippedApps['shippedApps'];
} else {
self::$shippedApps = ['files', 'encryption', 'files_external', 'files_sharing', 'files_trashbin', 'files_versions', 'provisioning_api', 'user_ldap', 'user_webdavauth'];
}
}
return in_array($appId, self::$shippedApps);
}
