First attempt at a move to a ActionFilter based policy

src/FubuMVC.AntiForgery.Testing/Default_policy_applies_anti_forgery_to_post_routes.cs

@@ -1,6 +1,7 @@
 using System.Linq;
 using FubuMVC.Core;
 using FubuMVC.Core.Registration;
+using FubuMVC.Core.Registration.Nodes;
 using FubuMVC.StructureMap;
 using FubuTestingSupport;
 using HtmlTags;
@@ -21,9 +22,9 @@ public void the_order_of_the_configuration_action_was_wrong()
             {
                 var graph = runtime.Factory.Get<BehaviorGraph>();
 
-                graph.BehaviorFor<TestEndpoint>(x => x.post_csrf(null))
-                    .OfType<AntiForgeryNode>().Any()
-                    .ShouldBeTrue();
+	            graph.BehaviorFor<TestEndpoint>(x => x.post_csrf(null))
+		            .OfType<ActionFilter>().Any()
+		            .ShouldBeTrue();
             }
 
 

src/FubuMVC.AntiForgery/AntiForgeryFilter.cs

@@ -0,0 +1,30 @@
+using System.Net;
+using FubuMVC.Core.Continuations;
+
+namespace FubuMVC.AntiForgery
+{
+	public interface IAntiForgeryFilter
+	{
+		FubuContinuation Filter(string salt);
+	}
+
+	public class AntiForgeryFilter : IAntiForgeryFilter
+	{
+		private readonly IAntiForgeryValidator _validator;
+
+		public AntiForgeryFilter(IAntiForgeryValidator validator)
+		{
+			_validator = validator;
+		}
+
+		public FubuContinuation Filter(string salt)
+		{
+			if (_validator.Validate(salt))
+			{
+				return FubuContinuation.NextBehavior();
+			}
+
+			return FubuContinuation.EndWithStatusCode(HttpStatusCode.InternalServerError);
+		}
+	}
+}

src/FubuMVC.AntiForgery/AntiForgeryPolicy.cs

@@ -1,18 +1,19 @@
 using System.Collections.Generic;
 using System.Linq;
 using FubuMVC.Core;
-using FubuMVC.Core.Registration;
-
+using FubuMVC.Core.Registration;
+using FubuMVC.Core.Registration.Nodes;
+
 namespace FubuMVC.AntiForgery
 {
-    [ConfigurationType(ConfigurationType.InjectNodes)]
-    public class AntiForgeryPolicy : IConfigurationAction
-    {
-        public void Configure(BehaviorGraph graph)
-        {
-            var antiForgerySettings = graph.Settings.Get<AntiForgerySettings>();
-            graph.Behaviors.Where(antiForgerySettings.AppliesTo)
-                .Each(x => x.Prepend(new AntiForgeryNode(x.InputType().FullName)));
-        }
-    }
+	[ConfigurationType(ConfigurationType.InjectNodes)]
+	public class AntiForgeryPolicy : IConfigurationAction
+	{
+		public void Configure(BehaviorGraph graph)
+		{
+			var antiForgerySettings = graph.Settings.Get<AntiForgerySettings>();
+			graph.Behaviors.Where(antiForgerySettings.AppliesTo)
+				.Each(x => x.Prepend(ActionFilter.For<IAntiForgeryFilter>(f => f.Filter(x.InputType().FullName))));
+		}
+	}
 }

src/FubuMVC.AntiForgery/FubuMVC.AntiForgery.csproj

@@ -69,6 +69,7 @@
     <Compile Include="AntiForgeryData.cs" />
     <Compile Include="AntiForgeryExtensions.cs" />
     <Compile Include="AntiForgeryNode.cs" />
+    <Compile Include="AntiForgeryFilter.cs" />
     <Compile Include="AntiForgeryPolicy.cs" />
     <Compile Include="AntiForgeryService.cs" />
     <Compile Include="AntiForgeryServiceRegistry.cs" />