/** * When this method is called, the backend must check if authentication was * successful. * * The returned value must be one of the following * * [true, "principals/username"] * [false, "reason for failure"] * * If authentication was successful, it's expected that the authentication * backend returns a so-called principal url. * * Examples of a principal url: * * principals/admin * principals/user1 * principals/users/joe * principals/uid/123457 * * If you don't use WebDAV ACL (RFC3744) we recommend that you simply * return a string such as: * * principals/users/[username] * * @param RequestInterface $request * @param ResponseInterface $response * @return array */ function check(RequestInterface $request, ResponseInterface $response) { $remoteUser = $request->getRawServerValue('REMOTE_USER'); if (is_null($remoteUser)) { $remoteUser = $request->getRawServerValue('REDIRECT_REMOTE_USER'); } if (is_null($remoteUser)) { return [false, 'No REMOTE_USER property was found in the PHP $_SERVER super-global. This likely means your server is not configured correctly']; } return [true, $this->principalPrefix . $remoteUser]; }