cross_site_forgery_test.rb

require 'test_helper'
require 'stubs/test_server'

class ActionCable::Connection::CrossSiteForgeryTest < ActionCable::TestCase
  HOST = 'rubyonrails.com'

  class Connection < ActionCable::Connection::Base
    def send_async(method, *args)
      # Bypass Celluloid
      send method, *args
    end
  end

  setup do
    @server = TestServer.new
    @server.config.allowed_request_origins = %w( http://rubyonrails.com )
  end

  teardown do
    @server.config.disable_request_forgery_protection = false
    @server.config.allowed_request_origins = []
  end

  test "disable forgery protection" do
    @server.config.disable_request_forgery_protection = true
    assert_origin_allowed 'http://rubyonrails.com'
    assert_origin_allowed 'http://hax.com'
  end

  test "explicitly specified a single allowed origin" do
    @server.config.allowed_request_origins = 'http://hax.com'
    assert_origin_not_allowed 'http://rubyonrails.com'
    assert_origin_allowed 'http://hax.com'
  end

  test "explicitly specified multiple allowed origins" do
    @server.config.allowed_request_origins = %w( http://rubyonrails.com http://www.rubyonrails.com )
    assert_origin_allowed 'http://rubyonrails.com'
    assert_origin_allowed 'http://www.rubyonrails.com'
    assert_origin_not_allowed 'http://hax.com'
  end

  test "explicitly specified a single regexp allowed origin" do
    @server.config.allowed_request_origins = /.*ha.*/
    assert_origin_not_allowed 'http://rubyonrails.com'
    assert_origin_allowed 'http://hax.com'
  end

  test "explicitly specified multiple regexp allowed origins" do
    @server.config.allowed_request_origins = [/http:\/\/ruby.*/, /.*rai.s.*com/, 'string' ]
    assert_origin_allowed 'http://rubyonrails.com'
    assert_origin_allowed 'http://www.rubyonrails.com'
    assert_origin_not_allowed 'http://hax.com'
    assert_origin_not_allowed 'http://rails.co.uk'
  end

  private
    def assert_origin_allowed(origin)
      response = connect_with_origin origin
      assert_equal(-1, response[0])
    end

    def assert_origin_not_allowed(origin)
      response = connect_with_origin origin
      assert_equal 404, response[0]
    end

    def connect_with_origin(origin)
      response = nil

      run_in_eventmachine do
        response = Connection.new(@server, env_for_origin(origin)).process
      end

      response
    end

    def env_for_origin(origin)
      Rack::MockRequest.env_for "/test", 'HTTP_CONNECTION' => 'upgrade', 'HTTP_UPGRADE' => 'websocket', 'SERVER_NAME' => HOST,
        'HTTP_ORIGIN' => origin
    end
end