1 files changed, 92 insertions, 0 deletions
diff --git a/actioncable/test/connection/cross_site_forgery_test.rb b/actioncable/test/connection/cross_site_forgery_test.rb
new file mode 100644
index 0000000000..3e21138ffc
--- /dev/null
+++ b/actioncable/test/connection/cross_site_forgery_test.rb
@@ -0,0 +1,92 @@
+# frozen_string_literal: true
+
+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)
+      send method, *args
+    end
+  end
+
+  setup do
+    @server = TestServer.new
+    @server.config.allowed_request_origins = %w( http://rubyonrails.com )
+    @server.config.allow_same_origin_as_host = false
+  end
+
+  teardown do
+    @server.config.disable_request_forgery_protection = false
+    @server.config.allowed_request_origins = []
+    @server.config.allow_same_origin_as_host = true
+  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
+
+  test "allow same origin as host" do
+    @server.config.allow_same_origin_as_host = true
+    assert_origin_allowed "http://#{HOST}"
+    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_HOST" => HOST, "HTTP_ORIGIN" => origin
+    end
+end