code: public function auth($file = ''): bool
      {
          if (php_sapi_name() == 'cli') {
              throw new GenericsException("CLI does not support basic auth!");
          }
          
          if ($file && in_array($file, $this->whitelist)) {
              return true;
          }
          
          $user = null;
          $password = null;
          
          if (isset($_SERVER['PHP_AUTH_USER'])) {
              $user = $_SERVER['PHP_AUTH_USER'];
          }
          if (isset($_SERVER['PHP_AUTH_PW'])) {
              $password = $_SERVER['PHP_AUTH_PW'];
          }
          
          if ($user && $password && $user == $this->user && $password == $this->password) {
              return true;
          }
          
          $httpStatus = new HttpStatus(401, '1.0');
          header('WWW-Authenticate: Basic realm=' . $this->realm);
          header(sprintf('HTTP/%s', $httpStatus));
          echo "Forbidden!";
          return false;
      }
docs: Perform authentication
  
  @param string $file
  @throws GenericsException
  @return bool