Initial commit

src/Lithnet.CredentialProvider/Interop/LsaHandle.cs

@@ -0,0 +1,40 @@
+using System;
+using System.ComponentModel;
+
+namespace Lithnet.CredentialProvider.Interop
+{
+    internal struct LsaHandle : IDisposable
+    {
+        public IntPtr Handle;
+
+        public LsaHandle(IntPtr handle)
+        {
+            this.Handle = handle;
+        }
+
+        public static implicit operator LsaHandle(IntPtr handle) => new LsaHandle(handle);
+        public static implicit operator IntPtr(LsaHandle handle) => handle.Handle;
+
+        public static LsaHandle ConnectUntrusted()
+        {
+            var result = PInvoke.LsaConnectUntrusted(out var handle);
+
+            if (result != 0)
+            {
+                throw new Win32Exception((int)result);
+            }
+
+            return handle;
+        }
+
+        public bool IsValid()
+        {
+            return this.Handle != IntPtr.Zero;
+        }
+
+        public void Dispose()
+        {
+            PInvoke.LsaDeregisterLogonProcess(this.Handle);
+        }
+    }
+}