Update custom marshallers for source-generated interop to the V2 shapes. (#42619)

* Update custom marshallers for source-generated interop to the V2 shapes.

Update shape to match the final shapes

Fix enum name to match approved name

* Update src/Servers/IIS/IIS/src/Core/IISConfigurationData.cs

Co-authored-by: Aaron Robinson <[email protected]>

* Fix build

Co-authored-by: Aaron Robinson <[email protected]>

Author: jkoritzinsky

src/Servers/IIS/IIS/src/Core/IISConfigurationData.cs

@@ -19,8 +19,8 @@ internal struct IISConfigurationData
     public string pwzBindings;
     public uint maxRequestBodySize;
 
-    [CustomTypeMarshaller(typeof(IISConfigurationData), CustomTypeMarshallerKind.Value, Features = CustomTypeMarshallerFeatures.UnmanagedResources | CustomTypeMarshallerFeatures.TwoStageMarshalling)]
-    public unsafe ref struct Marshaller
+    [CustomMarshaller(typeof(IISConfigurationData), MarshalMode.Default, typeof(Marshaller))]
+    public static class Marshaller
     {
         public struct Native
         {
@@ -34,53 +34,49 @@ public struct Native
             public uint maxRequestBodySize;
         }
 
-        private Native _native;
-
-        public Marshaller(IISConfigurationData managed)
+        public static Native ConvertToUnmanaged(IISConfigurationData managed)
         {
-            _native.pNativeApplication = managed.pNativeApplication;
-            _native.pwzFullApplicationPath = managed.pwzFullApplicationPath is null ? IntPtr.Zero : Marshal.StringToBSTR(managed.pwzFullApplicationPath);
-            _native.pwzVirtualApplicationPath = managed.pwzVirtualApplicationPath is null ? IntPtr.Zero : Marshal.StringToBSTR(managed.pwzVirtualApplicationPath);
-            _native.fWindowsAuthEnabled = managed.fWindowsAuthEnabled ? 1 : 0;
-            _native.fBasicAuthEnabled = managed.fBasicAuthEnabled ? 1 : 0;
-            _native.fAnonymousAuthEnable = managed.fAnonymousAuthEnable ? 1 : 0;
-            _native.pwzBindings = managed.pwzBindings is null ? IntPtr.Zero : Marshal.StringToBSTR(managed.pwzBindings);
-            _native.maxRequestBodySize = managed.maxRequestBodySize;
+            Native native;
+            native.pNativeApplication = managed.pNativeApplication;
+            native.pwzFullApplicationPath = managed.pwzFullApplicationPath is null ? IntPtr.Zero : Marshal.StringToBSTR(managed.pwzFullApplicationPath);
+            native.pwzVirtualApplicationPath = managed.pwzVirtualApplicationPath is null ? IntPtr.Zero : Marshal.StringToBSTR(managed.pwzVirtualApplicationPath);
+            native.fWindowsAuthEnabled = managed.fWindowsAuthEnabled ? 1 : 0;
+            native.fBasicAuthEnabled = managed.fBasicAuthEnabled ? 1 : 0;
+            native.fAnonymousAuthEnable = managed.fAnonymousAuthEnable ? 1 : 0;
+            native.pwzBindings = managed.pwzBindings is null ? IntPtr.Zero : Marshal.StringToBSTR(managed.pwzBindings);
+            native.maxRequestBodySize = managed.maxRequestBodySize;
+            return native;
         }
 
-        public Native ToNativeValue() => _native;
-
-        public void FromNativeValue(Native value) => _native = value;
-
-        public IISConfigurationData ToManaged()
+        public static void Free(Native native)
         {
-            return new()
+            if (native.pwzFullApplicationPath != IntPtr.Zero)
             {
-                pNativeApplication = _native.pNativeApplication,
-                pwzFullApplicationPath = _native.pwzFullApplicationPath == IntPtr.Zero ? string.Empty : Marshal.PtrToStringBSTR(_native.pwzFullApplicationPath),
-                pwzVirtualApplicationPath = _native.pwzVirtualApplicationPath == IntPtr.Zero ? string.Empty : Marshal.PtrToStringBSTR(_native.pwzVirtualApplicationPath),
-                fWindowsAuthEnabled = _native.fWindowsAuthEnabled != 0,
-                fBasicAuthEnabled = _native.fBasicAuthEnabled != 0,
-                fAnonymousAuthEnable = _native.fAnonymousAuthEnable != 0,
-                pwzBindings = _native.pwzBindings == IntPtr.Zero ? string.Empty : Marshal.PtrToStringBSTR(_native.pwzBindings),
-                maxRequestBodySize = _native.maxRequestBodySize
-            };
-        }
-
-        public void FreeNative()
-        {
-            if (_native.pwzFullApplicationPath != IntPtr.Zero)
-            {
-                Marshal.FreeBSTR(_native.pwzFullApplicationPath);
+                Marshal.FreeBSTR(native.pwzFullApplicationPath);
             }
-            if (_native.pwzVirtualApplicationPath != IntPtr.Zero)
+            if (native.pwzVirtualApplicationPath != IntPtr.Zero)
             {
-                Marshal.FreeBSTR(_native.pwzVirtualApplicationPath);
+                Marshal.FreeBSTR(native.pwzVirtualApplicationPath);
             }
-            if (_native.pwzBindings != IntPtr.Zero)
+            if (native.pwzBindings != IntPtr.Zero)
             {
-                Marshal.FreeBSTR(_native.pwzBindings);
+                Marshal.FreeBSTR(native.pwzBindings);
             }
         }
+
+        public static IISConfigurationData ConvertToManaged(Native native)
+        {
+            return new()
+            {
+                pNativeApplication = native.pNativeApplication,
+                pwzFullApplicationPath = native.pwzFullApplicationPath == IntPtr.Zero ? string.Empty : Marshal.PtrToStringBSTR(native.pwzFullApplicationPath),
+                pwzVirtualApplicationPath = native.pwzVirtualApplicationPath == IntPtr.Zero ? string.Empty : Marshal.PtrToStringBSTR(native.pwzVirtualApplicationPath),
+                fWindowsAuthEnabled = native.fWindowsAuthEnabled != 0,
+                fBasicAuthEnabled = native.fBasicAuthEnabled != 0,
+                fAnonymousAuthEnable = native.fAnonymousAuthEnable != 0,
+                pwzBindings = native.pwzBindings == IntPtr.Zero ? string.Empty : Marshal.PtrToStringBSTR(native.pwzBindings),
+                maxRequestBodySize = native.maxRequestBodySize
+            };
+        }
     }
 }

src/Servers/IIS/IntegrationTesting.IIS/src/IISExpressDeployer.cs

@@ -2,6 +2,7 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 
 using System.Diagnostics;
+using System.Diagnostics.CodeAnalysis;
 using System.Globalization;
 using System.Runtime.InteropServices;
 using System.Runtime.InteropServices.Marshalling;
@@ -455,19 +456,25 @@ private sealed partial class WindowsNativeMethods
         [LibraryImport("user32.dll", EntryPoint = "GetClassNameW", SetLastError = true)]
         internal static partial int GetClassName(IntPtr hWnd, [Out, MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.U2)] char[] lpClassName, int nMaxCount);
 
-        [CustomTypeMarshaller(typeof(HandleRef), Direction = CustomTypeMarshallerDirection.In, Features = CustomTypeMarshallerFeatures.UnmanagedResources | CustomTypeMarshallerFeatures.TwoStageMarshalling)]
-        internal struct HandleRefMarshaller
+        [CustomMarshaller(typeof(HandleRef), MarshalMode.ManagedToUnmanagedIn, typeof(ManagedToUnmanagedIn))]
+        internal static class HandleRefMarshaller
         {
-            private readonly HandleRef _handle;
-
-            public HandleRefMarshaller(HandleRef handle)
+            internal struct ManagedToUnmanagedIn
             {
-                _handle = handle;
-            }
+                private HandleRef _handle;
 
-            public IntPtr ToNativeValue() => _handle.Handle;
+                public void FromManaged(HandleRef handle)
+                {
+                    _handle = handle;
+                }
 
-            public void FreeNative() => GC.KeepAlive(_handle.Wrapper);
+                public IntPtr ToUnmanaged() => _handle.Handle;
+
+                public void OnInvoked() => GC.KeepAlive(_handle.Wrapper);
+
+                [SuppressMessage("Performance", "CA1822:Mark members as static", Justification = "This method is part of the marshaller shape and is required to be an instance method.")]
+                public void Free() {}
+            }
         }
     }