QfeChecker.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WCF / Tools / WSATConfig / Configuration / QfeChecker.cs / 1305376 / QfeChecker.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------

namespace Microsoft.Tools.ServiceModel.WsatConfig 
{
    using System; 
    using System.Collections; 
    using System.Collections.Generic;
    using System.Management; 
    using System.Threading;
    using System.IO;
    using System.Runtime.InteropServices;
 
    static class QfeChecker
    { 
        const string CLSID_CGatewayProtocol = "{37de7045-5056-456f-8409-c871e0f8b0e0}"; 
        const string IID_IClassFactory = "{00000001-0000-0000-C000-000000000046}";
        const string RegKeyClassIdRoot = @"SOFTWARE\Classes\CLSID\"; 

        //
        //The hotfix that is checked here depends on the system. WinXP:912817,  Win2k3:912818
        // 
        public static void CheckQfe()
        { 
            bool qfeInstalled = false; 
            int hr = SafeNativeMethods.CoInitializeEx(IntPtr.Zero, SafeNativeMethods.COINIT_APARTMENTTHREADED);
            if (hr >= 0) 
            {
                try
                {
                    SafeIUnknown pClassFactory = null; 

                    hr = SafeNativeMethods.CoGetClassObject(new Guid(CLSID_CGatewayProtocol), 
                        SafeNativeMethods.CLSCTX.CLSCTX_INPROC_SERVER, 
                        IntPtr.Zero,
                        new Guid(IID_IClassFactory), 
                        out pClassFactory);

                    if (hr >= 0 && pClassFactory != null)
                    { 
                        qfeInstalled = true;
                    } 
                    else 
                    {
                        qfeInstalled = RegistryEntryExists(); 
                    }
                }
                finally
                { 
                    SafeNativeMethods.CoUninitialize();
                } 
            } 

            if (!qfeInstalled) 
            {
                throw new WsatAdminException(WsatAdminErrorCode.CANNOT_ENABLE_NETWORK_SUPPORT_WHEN_QFE_IS_NOT_INSTALLED, SR.GetString(SR.ErrorNoQFE));
            }
        } 

        static bool RegistryEntryExists() 
        { 
            bool regKeyExists = false;
            using (SafeRegistryKey hive = new SafeRegistryKey(new IntPtr((int)Microsoft.Win32.RegistryHive.LocalMachine), false)) 
            {
                SafeRegistryKey regKey = null;
                int ret = SafeNativeMethods.RegOpenKeyEx(
                            hive, 
                            RegKeyClassIdRoot + CLSID_CGatewayProtocol,
                            0, 
                            SafeNativeMethods.KEY_WOW64_64KEY | SafeNativeMethods.KEY_QUERY_VALUE, 
                            out regKey);
 
                if (ret == 0 && regKey != null && !regKey.IsInvalid)
                {
                    regKeyExists = true;
                    regKey.Close(); 
                }
            } 
            return regKeyExists; 
        }
    } 

    static partial class SafeNativeMethods
    {
        internal const uint COINIT_APARTMENTTHREADED = 0x2; 

        internal const string Ole32 = "ole32.dll"; 
 
        [DllImport(Ole32)]
        internal static extern int CoInitializeEx( 
            [In] IntPtr pvReserved,
            [In] uint dwCoInit);

        [DllImport(Ole32, CharSet = CharSet.Unicode)] 
        internal static extern int CoGetClassObject(
            [In, MarshalAs(UnmanagedType.LPStruct)] Guid rclsid, 
            [In] CLSCTX dwClsContext, 
            [In ] IntPtr pServerInfo,
            [In, MarshalAs(UnmanagedType.LPStruct)] Guid riid, 
            [Out] out SafeIUnknown ppv);

        [DllImport(Ole32)]
        internal static extern void CoUninitialize(); 

        [Flags] 
        internal enum CLSCTX : uint 
        {
            CLSCTX_INPROC_SERVER = 0x1, 
            CLSCTX_INPROC_HANDLER = 0x2,
            CLSCTX_LOCAL_SERVER = 0x4,
            CLSCTX_INPROC_SERVER16 = 0x8,
            CLSCTX_REMOTE_SERVER = 0x10, 
            CLSCTX_INPROC_HANDLER16 = 0x20,
            CLSCTX_RESERVED1 = 0x40, 
            CLSCTX_RESERVED2 = 0x80, 
            CLSCTX_RESERVED3 = 0x100,
            CLSCTX_RESERVED4 = 0x200, 
            CLSCTX_NO_CODE_DOWNLOAD = 0x400,
            CLSCTX_RESERVED5 = 0x800,
            CLSCTX_NO_CUSTOM_MARSHAL = 0x1000,
            CLSCTX_ENABLE_CODE_DOWNLOAD = 0x2000, 
            CLSCTX_NO_FAILURE_LOG = 0x4000,
            CLSCTX_DISABLE_AAA = 0x8000, 
            CLSCTX_ENABLE_AAA = 0x10000, 
            CLSCTX_FROM_DEFAULT_CONTEXT = 0x20000,
            CLSCTX_INPROC = CLSCTX_INPROC_SERVER | CLSCTX_INPROC_HANDLER, 
            CLSCTX_SERVER = CLSCTX_INPROC_SERVER | CLSCTX_LOCAL_SERVER | CLSCTX_REMOTE_SERVER,
            CLSCTX_ALL = CLSCTX_SERVER | CLSCTX_INPROC_HANDLER
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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