Moved 'params[request_forgery_protection_token]' into its own method …

…and improved tests.

actionpack/CHANGELOG.md

@@ -1,3 +1,10 @@
+*   Moved `params[request_forgery_protection_token]` into its own method
+    and improved tests.
+
+    Fixes #11316.
+
+    *Tom Kadwill*
+
 *   Added verification of route constraints given as a Proc or an object responding
     to `:matches?`. Previously, when given an non-complying object, it would just
     silently fail to enforce the constraint. It will now raise an `ArgumentError`

actionpack/lib/action_controller/metal/request_forgery_protection.rb

@@ -247,7 +247,7 @@ def non_xhr_javascript_response?
       # * Does the X-CSRF-Token header match the form_authenticity_token
       def verified_request?
         !protect_against_forgery? || request.get? || request.head? ||
-          form_authenticity_token == params[request_forgery_protection_token] ||
+          form_authenticity_token == form_authenticity_param ||
           form_authenticity_token == request.headers['X-CSRF-Token']
       end
 

actionpack/test/controller/request_forgery_protection_test.rb

@@ -462,16 +462,37 @@ def test_should_allow_all_methods_without_token
 class CustomAuthenticityParamControllerTest < ActionController::TestCase
   def setup
     super
-    ActionController::Base.request_forgery_protection_token = :custom_token_name
+    @old_logger = ActionController::Base.logger
+    @logger = ActiveSupport::LogSubscriber::TestHelper::MockLogger.new
+    @token = "foobar"
+    ActionController::Base.request_forgery_protection_token = @token
   end
 
   def teardown
-    ActionController::Base.request_forgery_protection_token = :authenticity_token
+    ActionController::Base.request_forgery_protection_token = nil
     super
   end
 
-  def test_should_allow_custom_token
-    post :index, :custom_token_name => 'foobar'
-    assert_response :ok
+  def test_should_not_warn_if_form_authenticity_param_matches_form_authenticity_token
+    ActionController::Base.logger = @logger
+    SecureRandom.stubs(:base64).returns(@token)
+
+    begin
+      post :index, :custom_token_name => 'foobar'
+      assert_equal 0, @logger.logged(:warn).size
+    ensure
+      ActionController::Base.logger = @old_logger
+    end
+  end
+
+  def test_should_warn_if_form_authenticity_param_does_not_match_form_authenticity_token
+    ActionController::Base.logger = @logger
+
+    begin
+      post :index, :custom_token_name => 'bazqux'
+      assert_equal 1, @logger.logged(:warn).size
+    ensure
+      ActionController::Base.logger = @old_logger
+    end
   end
 end