Reworked RPC client builder to also build a COM proxy.

Author: tyranid

NtApiDotNet/NtApiDotNet.csproj

@@ -544,6 +544,8 @@
     <Compile Include="Win32\Rpc\EndpointMapper\RpcEndpointMapperManaged.cs" />
     <Compile Include="Win32\Rpc\EndpointMapper\RpcEndpointMapperNative.cs" />
     <Compile Include="Win32\Rpc\EndpointMapper\RpcEndPointVersionOption.cs" />
+    <Compile Include="Win32\Rpc\IRpcBuildableClient.cs" />
+    <Compile Include="Win32\Rpc\RpcComProxy.cs" />
     <Compile Include="Win32\Rpc\RpcInterfaceId.cs" />
     <Compile Include="Win32\Rpc\EndpointMapper\RpcProtocolIdentifier.cs" />
     <Compile Include="Win32\Rpc\EndpointMapper\RpcProtocolTower.cs" />

NtApiDotNet/Win32/Rpc/IRpcBuildableClient.cs

@@ -0,0 +1,47 @@
+//  Copyright 2019 Google Inc. All Rights Reserved.
+//
+//  Licensed under the Apache License, Version 2.0 (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//  http://www.apache.org/licenses/LICENSE-2.0
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+
+using NtApiDotNet.Ndr;
+using System;
+using System.Collections.Generic;
+
+namespace NtApiDotNet.Win32.Rpc
+{
+    /// <summary>
+    /// Interface to represent a "buildable" RPC client.
+    /// </summary>
+    public interface IRpcBuildableClient
+    {
+        /// <summary>
+        /// The RPC server interface UUID.
+        /// </summary>
+        Guid InterfaceId { get; }
+        /// <summary>
+        /// The RPC server interface version.
+        /// </summary>
+        Version InterfaceVersion { get; }
+        /// <summary>
+        /// The list of RPC procedures.
+        /// </summary>
+        IEnumerable<NdrProcedureDefinition> Procedures { get; }
+        /// <summary>
+        /// List of parsed complext types.
+        /// </summary>
+        IEnumerable<NdrComplexTypeReference> ComplexTypes { get; }
+        /// <summary>
+        /// Path to the PE file this server came from (if known)
+        /// </summary>
+        string FilePath { get; }
+    }
+}