Class: Rack::CAS

Inherits:
Object
  • Object
show all
Defined in:
lib/rack/cas.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(app, config = {}) ⇒ CAS

Returns a new instance of CAS.



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# File 'lib/rack/cas.rb', line 9

def initialize(app, config={})
  @app = app

  RackCAS.config.update config
end

Instance Attribute Details

#server_url ⇒ Object

Returns the value of attribute server_url.



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# File 'lib/rack/cas.rb', line 7

def server_url
  @server_url
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/rack/cas.rb', line 15

def call(env)
  request = Rack::Request.new(env)
  cas_request = CASRequest.new(request)

  return @app.call(env) if exclude_request?(cas_request)

  if cas_request.ticket_validation?
    log env, 'rack-cas: Intercepting ticket validation request.'

    service_url = RackCAS.config.service? ? RackCAS.config.service : cas_request.service_url

    begin
      user, extra_attrs = get_user(request.url, cas_request.ticket)
    rescue RackCAS::ServiceValidationResponse::TicketInvalidError, RackCAS::SAMLValidationResponse::TicketInvalidError
      log env, 'rack-cas: Invalid ticket. Redirecting to CAS login.'

      return redirect_to server.(service_url).to_s
    end

    store_session request, user, cas_request.ticket, extra_attrs
    return redirect_to service_url
  end

  if cas_request.logout?
    log env, 'rack-cas: Intercepting logout request.'

    request.session.send (request.session.respond_to?(:destroy) ? :destroy : :clear)
    return redirect_to server.logout_url(request.params).to_s
  end

  if cas_request.single_sign_out? && RackCAS.config.session_store?
    log env, 'rack-cas: Intercepting single-sign-out request.'

    RackCAS.config.session_store.destroy_session_by_cas_ticket(cas_request.ticket)
    return [200, {'Content-Type' => 'text/plain'}, ['CAS Single-Sign-Out request intercepted.']]
  end

  response = @app.call(env)

  if response[0] == 401 && !ignore_intercept?(request) # access denied
    log env, 'rack-cas: Intercepting 401 access denied response. Redirecting to CAS login.'

    url = if RackCAS.config.service?
            configured_service_url = RackCAS::URL.parse(RackCAS.config.service)
            request_url            = RackCAS::URL.parse(request.url)
            request_url.host       = configured_service_url.host
            request_url.scheme     = configured_service_url.scheme
            request_url.to_s
          else
            cas_request.service_url
          end

    redirect_to server.(url).to_s
  else
    response
  end
end