Move Antiforgery implementation details to `.Internal`

- leave `IAntiforgery`, `IAntiforgeryAdditionalDataProvider` and related bits behind

src/Microsoft.AspNetCore.Antiforgery/Internal/AntiforgeryContext.cs

@@ -1,7 +1,7 @@
 // Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     /// <summary>
     /// Used as a per request state.

src/Microsoft.AspNetCore.Antiforgery/Internal/AntiforgeryOptionsSetup.cs

@@ -8,7 +8,7 @@ using Microsoft.AspNetCore.DataProtection;
 using Microsoft.AspNetCore.WebUtilities;
 using Microsoft.Extensions.Options;
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     public class AntiforgeryOptionsSetup : ConfigureOptions<AntiforgeryOptions>
     {

src/Microsoft.AspNetCore.Antiforgery/Internal/AntiforgerySerializationContext.cs

@@ -5,7 +5,7 @@ using System.IO;
 using System.Security.Cryptography;
 using System.Text;
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     public class AntiforgerySerializationContext
     {

src/Microsoft.AspNetCore.Antiforgery/Internal/AntiforgeryToken.cs

@@ -1,7 +1,7 @@
 // Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     public sealed class AntiforgeryToken
     {

src/Microsoft.AspNetCore.Antiforgery/Internal/BinaryBlob.cs

@@ -8,7 +8,7 @@ using System.Runtime.CompilerServices;
 using System.Security.Cryptography;
 using System.Text;
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     // Represents a binary blob (token) that contains random data.
     // Useful for binary data inside a serialized stream.

src/Microsoft.AspNetCore.Antiforgery/Internal/DefaultAntiforgery.cs

@@ -10,7 +10,7 @@ using Microsoft.AspNetCore.Html;
 using Microsoft.AspNetCore.Http;
 using Microsoft.Extensions.Options;
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     /// <summary>
     /// Provides access to the antiforgery system, which provides protection against

src/Microsoft.AspNetCore.Antiforgery/Internal/DefaultAntiforgeryAdditionalDataProvider.cs

@@ -3,7 +3,7 @@
 
 using Microsoft.AspNetCore.Http;
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     /// <summary>
     /// A default <see cref="IAntiforgeryAdditionalDataProvider"/> implementation.

src/Microsoft.AspNetCore.Antiforgery/Internal/DefaultAntiforgeryContextAccessor.cs

@@ -1,7 +1,7 @@
 // Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     public class DefaultAntiforgeryContextAccessor : IAntiforgeryContextAccessor
     {

src/Microsoft.AspNetCore.Antiforgery/Internal/DefaultAntiforgeryTokenGenerator.cs

@@ -6,7 +6,7 @@ using System.Security.Claims;
 using System.Security.Principal;
 using Microsoft.AspNetCore.Http;
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     public class DefaultAntiforgeryTokenGenerator : IAntiforgeryTokenGenerator
     {

src/Microsoft.AspNetCore.Antiforgery/Internal/DefaultAntiforgeryTokenSerializer.cs

@@ -7,7 +7,7 @@ using Microsoft.AspNetCore.DataProtection;
 using Microsoft.AspNetCore.WebUtilities;
 using Microsoft.Extensions.ObjectPool;
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     public class DefaultAntiforgeryTokenSerializer : IAntiforgeryTokenSerializer
     {

src/Microsoft.AspNetCore.Antiforgery/Internal/DefaultAntiforgeryTokenStore.cs

@@ -9,7 +9,7 @@ using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Options;
 using Microsoft.Extensions.Primitives;
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     public class DefaultAntiforgeryTokenStore : IAntiforgeryTokenStore
     {

src/Microsoft.AspNetCore.Antiforgery/Internal/DefaultClaimUidExtractor.cs

@@ -7,7 +7,7 @@ using System.Linq;
 using System.Security.Claims;
 using Microsoft.Extensions.ObjectPool;
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     /// <summary>
     /// Default implementation of <see cref="IClaimUidExtractor"/>.

src/Microsoft.AspNetCore.Antiforgery/Internal/IAntiforgeryContextAccessor.cs

@@ -1,7 +1,7 @@
 // Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     public interface IAntiforgeryContextAccessor
     {

src/Microsoft.AspNetCore.Antiforgery/Internal/IAntiforgeryTokenGenerator.cs

@@ -3,7 +3,7 @@
 
 using Microsoft.AspNetCore.Http;
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     /// <summary>
     /// Generates and validates antiforgery tokens.

src/Microsoft.AspNetCore.Antiforgery/Internal/IAntiforgeryTokenSerializer.cs

@@ -1,7 +1,7 @@
 // Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     // Abstracts out the serialization process for an antiforgery token
     public interface IAntiforgeryTokenSerializer

src/Microsoft.AspNetCore.Antiforgery/Internal/IAntiforgeryTokenStore.cs

@@ -4,7 +4,7 @@
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Http;
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     // Provides an abstraction around how tokens are persisted and retrieved for a request
     public interface IAntiforgeryTokenStore

src/Microsoft.AspNetCore.Antiforgery/Internal/IClaimUidExtractor.cs

@@ -3,7 +3,7 @@
 
 using System.Security.Claims;
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     /// <summary>
     /// This interface can extract unique identifers for a claims-based identity.

test/Microsoft.AspNetCore.Antiforgery.Test/Internal/AntiforgeryOptionsSetupTest.cs

@@ -5,7 +5,7 @@ using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Options;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     public class AntiforgeryOptionsSetupTest
     {

test/Microsoft.AspNetCore.Antiforgery.Test/Internal/AntiforgeryTokenTest.cs

@@ -3,7 +3,7 @@
 
 using Xunit;
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     public class AntiforgeryTokenTest
     {

test/Microsoft.AspNetCore.Antiforgery.Test/Internal/BinaryBlobTest.cs

@@ -4,7 +4,7 @@
 using System;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     public class BinaryBlobTest
     {

test/Microsoft.AspNetCore.Antiforgery.Test/Internal/DefaultAntiforgeryTest.cs

@@ -13,7 +13,7 @@ using Microsoft.Extensions.WebEncoders.Testing;
 using Moq;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     public class DefaultAntiforgeryTest
     {
@@ -186,7 +186,7 @@ namespace Microsoft.AspNetCore.Antiforgery
             var antiforgery = GetAntiforgery(context);
             var encoder = new HtmlTestEncoder();
 
-            // Setup so that the null cookie token returned is treated as invalid.		
+            // Setup so that the null cookie token returned is treated as invalid.
             context.TokenGenerator
                 .Setup(o => o.IsCookieTokenValid(null))
                 .Returns(false);
@@ -226,7 +226,7 @@ namespace Microsoft.AspNetCore.Antiforgery
                 .Setup(o => o.GetCookieToken(context.HttpContext))
                 .Throws(new Exception("should be swallowed"));
 
-            // Setup so that the null cookie token returned is treated as invalid.		
+            // Setup so that the null cookie token returned is treated as invalid.
             context.TokenGenerator
                 .Setup(o => o.IsCookieTokenValid(null))
                 .Returns(false);

test/Microsoft.AspNetCore.Antiforgery.Test/Internal/DefaultAntiforgeryTokenGeneratorTest.cs

@@ -9,7 +9,7 @@ using Microsoft.AspNetCore.Testing;
 using Moq;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     public class DefaultAntiforgeryTokenGeneratorProviderTest
     {
@@ -190,7 +190,7 @@ namespace Microsoft.AspNetCore.Antiforgery
                         .Returns("my-username");
 
             httpContext.User = new ClaimsPrincipal(mockIdentity.Object);
-            
+
             var claimUidExtractor = new Mock<IClaimUidExtractor>().Object;
 
             var tokenProvider = new DefaultAntiforgeryTokenGenerator(
@@ -325,7 +325,7 @@ namespace Microsoft.AspNetCore.Antiforgery
                 claimUidExtractor: null,
                 additionalDataProvider: null);
 
-            string expectedMessage = 
+            string expectedMessage =
                 "Validation of the provided antiforgery token failed. " +
                 "The cookie token and the request token were swapped.";
 

test/Microsoft.AspNetCore.Antiforgery.Test/Internal/DefaultAntiforgeryTokenSerializerTest.cs

@@ -4,13 +4,12 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using Microsoft.AspNetCore.Antiforgery.Internal;
 using Microsoft.AspNetCore.DataProtection;
 using Microsoft.Extensions.ObjectPool;
 using Moq;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     public class DefaultAntiforgeryTokenSerializerTest
     {

test/Microsoft.AspNetCore.Antiforgery.Test/Internal/DefaultAntiforgeryTokenStoreTest.cs

@@ -4,7 +4,6 @@
 using System;
 using System.Collections.Generic;
 using System.Threading.Tasks;
-using Microsoft.AspNetCore.Antiforgery.Internal;
 using Microsoft.AspNetCore.DataProtection;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Http.Internal;
@@ -14,7 +13,7 @@ using Microsoft.Extensions.Primitives;
 using Moq;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     public class DefaultAntiforgeryTokenStoreTest
     {

test/Microsoft.AspNetCore.Antiforgery.Test/Internal/DefaultClaimUidExtractorTest.cs

@@ -4,12 +4,11 @@
 using System;
 using System.Linq;
 using System.Security.Claims;
-using Microsoft.AspNetCore.Antiforgery.Internal;
 using Microsoft.Extensions.ObjectPool;
 using Moq;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Antiforgery
+namespace Microsoft.AspNetCore.Antiforgery.Internal
 {
     public class DefaultClaimUidExtractorTest
     {