Added basic functionality to query package information.

SecPkgInfo.cs

@@ -0,0 +1,75 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NSspi
+{
+    [StructLayout( LayoutKind.Sequential )]
+    public class SecPkgInfo
+    {
+        public SecPkgCapability Capabilities;
+
+        public short Version;
+
+        public short RpcId;
+
+        public int MaxTokenLength;
+
+        [MarshalAs( UnmanagedType.LPWStr )]
+        public string Name;
+
+        [MarshalAs( UnmanagedType.LPWStr )]
+        public string Comment;
+    }
+
+    [Flags]
+    public enum SecPkgCapability : uint 
+    {
+        Integrity       = 0x1,
+
+        Privacy         = 0x2,
+
+        TokenOnly       = 0x4,
+
+        Datagram        = 0x8,
+
+        Connection      = 0x10,
+
+        MultiLeg        = 0x20,
+
+        ClientOnly      = 0x40,
+
+        ExtendedError   = 0x80,
+
+        Impersonation   = 0x100,
+
+        AcceptWin32Name = 0x200,
+
+        Stream          = 0x400,
+
+        Negotiable      = 0x800,
+
+        GssCompatible   = 0x1000,
+
+        Logon           = 0x2000,
+
+        AsciiBuffers    = 0x4000,
+
+        Fragment        = 0x8000,
+
+        MutualAuth      = 0x10000,
+
+        Delegation      = 0x20000,
+
+        ReadOnlyChecksum = 0x40000,
+
+        RestrictedTokens = 0x80000,
+
+        ExtendsNego     = 0x00100000,
+
+        Negotiable2     = 0x00200000,
+    }
+}