module Rack::Protection

def self.new(app, options = {})
  # does not include: RemoteReferrer, AuthenticityToken and FormToken
  except = Array options[:except]
  use_these = Array options[:use]
  if options.fetch(:without_session, false)
    except += %i[session_hijacking remote_token]
  end
  Rack::Builder.new do
    # Off by default, unless added
    use ::Rack::Protection::AuthenticityToken,     options if use_these.include? :authenticity_token
    use ::Rack::Protection::ContentSecurityPolicy, options if use_these.include? :content_security_policy
    use ::Rack::Protection::CookieTossing,         options if use_these.include? :cookie_tossing
    use ::Rack::Protection::EscapedParams,         options if use_these.include? :escaped_params
    use ::Rack::Protection::FormToken,             options if use_these.include? :form_token
    use ::Rack::Protection::ReferrerPolicy,        options if use_these.include? :referrer_policy
    use ::Rack::Protection::RemoteReferrer,        options if use_these.include? :remote_referrer
    use ::Rack::Protection::StrictTransport,       options if use_these.include? :strict_transport
    # On by default, unless skipped
    use ::Rack::Protection::FrameOptions,          options unless except.include? :frame_options
    use ::Rack::Protection::HttpOrigin,            options unless except.include? :http_origin
    use ::Rack::Protection::IPSpoofing,            options unless except.include? :ip_spoofing
    use ::Rack::Protection::JsonCsrf,              options unless except.include? :json_csrf
    use ::Rack::Protection::PathTraversal,         options unless except.include? :path_traversal
    use ::Rack::Protection::RemoteToken,           options unless except.include? :remote_token
    use ::Rack::Protection::SessionHijacking,      options unless except.include? :session_hijacking
    use ::Rack::Protection::XSSHeader,             options unless except.include? :xss_header
    run app
  end.to_app
end